diff --git a/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.i18n.yaml
new file mode 100644
index 0000000000..c7861321a0
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.md
+2026-07-29-request-level-llm-config-credentials.md: f12a2496a767decc3ce2b065f6be03009aec8992
+2026-07-29-request-level-llm-config-credentials.zh.md: 99fd90013a24746962ca02a5f4f18cdccd53f71a
diff --git a/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.md b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.md
new file mode 100644
index 0000000000..f12a2496a7
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.md
@@ -0,0 +1,29 @@
+# Agent Note: request-level LLM configuration and the credential seam
+
+Status: implemented
+
+English | [中文](2026-07-29-request-level-llm-config-credentials.zh.md)
+
+> Scope: the first production consumers of `ctx.settings` (the two LLM adapter plugins), the new `packages/credentials/` capability family, and the `packages/util/atomic-write` extraction. The follow-up wire surface (`settings.*`/`credentials.*` RPC, secret-role masking, the web settings form) is a separate PR and not part of this note's shipped scope.
+
+## Problem
+
+The [settings seam](2026-07-28-user-settings-seam.md) shipped without a production consumer, and the LLM adapters were the motivating one: both froze `apiKey`/`baseURL`/catalog into adapter instances at plugin load, so a changed key or endpoint needed a process restart, and a missing key failed plugin load — the worst possible first-run posture for a personal config page ("store a key, then restart"). Secrets were also headed the wrong way: the natural move (put `apiKey` in the settings document) would have forced masking, server-side backfill on `replace`, and dotfiles-sync warnings, a mitigation stack for a problem peer products simply do not have — Codex (`env_key` + auth.json), Reasonix (`api_key_env` + home `.env`), OpenCode/Pi (`auth.json`), Claude Code (`apiKeyHelper`) all keep secrets out of configuration files.
+
+## Decision
+
+**Per-request resolution, not fiber rebuilds.** The adapters take an options thunk (and a per-stream credential resolver) instead of frozen construction facts, resolving once per operation — the Pi pattern, with its tested semantics: two requests straddling a change see two configurations, one request resolves exactly once, and an in-flight stream keeps the facts it started with. This deletes the entire swap machinery a rebuild design needs (`DUPLICATE_ADAPTER` ordering, `NO_ADAPTER` windows, a deferred-activation state machine) and makes a missing key a *request-time* actionable failure (`MISSING_CREDENTIAL` naming every entry point) while the route stays registered and the catalog stays browsable. The one registration-captured fact — the retry policy the `ctx.llm` registry snapshots at `registerAdapter` (plus pi-ai's route *set*) — re-registers the same adapter instance in one synchronous section when it changes.
+
+**Secrets are references, values live behind `ctx.credentials`.** Configuration (both planes) carries `apiKeyEnv: DEEPSEEK_API_KEY`; the three-package credential seam resolves it per operation. `credentials-local` layers the live process environment (read-only, wins — a launch-time override is operator intent and must be *visibly* read-only, so shadowed writes reject instead of appearing to succeed) over `$DSH_HOME/.env` (writable, byte-preserving line edits, a quoting ladder dotenv reads back verbatim, wholesale snapshot replacement on reload so a deleted entry never lingers — the Claude Code additive-reapply lesson). Resolution order in the adapters is literal `apiKey` first (preserving the historical `config.apiKey ?? env` observable semantics), then the seam, then — only without a mounted seam — the raw environment variable.
+
+**Per-plugin namespaces, schema ≡ `Config`.** Each adapter registers its own namespace (`llm-deepseek`, `llm-pi-ai`) with its plugin `Config` schema and its `cordis.yml` entry as the composition `base` — a settings section is the same YAML shape as the entry config, and `resolveAdapterOptions`/`resolveProfiles` stay the one explicit resolve step for both. A live snapshot failing a beyond-schema bound keeps the last good facts (the seam's last-good philosophy extended one level up); the entry config itself still fails load. pi-ai's `providers` became a dict keyed by route so base and user layers merge per provider and the route set is structural; the array shape fails loud with migration directions, and an empty dict is the valid dormant posture — a composition ships the adapter bare and every route stays a user-plane decision.
+
+## Alternatives considered
+
+- **A bridge plugin (`dsh-llm-models`) owning one unified `models` dict** — with per-plugin namespaces there is nothing left to bridge, and the adapter-mapping rules it needed were pure invented indirection.
+- **Secrets in settings.yaml under `role('secret')` masking** — deleting the problem (references) beats mitigating it (mask + backfill + sync warnings); the coding-agent cohort is unanimous.
+- **Registry-level live retry policy** — making `providerRetryPolicy` re-read per call would silently change the `ctx.llm` capture contract every registration relies on; re-registering the route in place keeps that contract and stays observable.
+
+## Consequences
+
+Onboarding is restart-free end to end (pinned by the `missing-credential` headless snapshot and the credentials-rotation composition tests): boot keyless, browse the catalog, store the key, prompt again. The demos mount `settings-local` + `credentials-local` by default and inline no `!!js` key plumbing. `runLoaderSmoke` gained `expectedExitCode` so a designed failure surface can be pinned rather than masked. Deferred: the wire/UI surface must redact `role('secret')` fields before any RPC exposes `describe()`, settings-layer arrays still replace wholesale (the deepseek `models` list), and a settings section cannot remove a composition-provided pi-ai route (only override or extend). Review of this seam later reworked where the store lives and who may read it, made one request resolve one configuration generation, and made route replacement atomic ([credential boundaries note](2026-07-30-credential-boundaries-and-atomic-registration.md)).
diff --git a/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.zh.md b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.zh.md
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+++ b/.agents/notes/implemented/architecture/2026-07-29-request-level-llm-config-credentials.zh.md
@@ -0,0 +1,29 @@
+# Agent Note：请求级 LLM 配置与凭据 seam
+
+Status: implemented
+
+[English](2026-07-29-request-level-llm-config-credentials.md) | 中文
+
+> 范围：`ctx.settings` 的第一批生产消费方（两个 LLM 适配器插件）、新增的 `packages/credentials/` 能力族，以及 `packages/util/atomic-write` 的抽取。后续的 wire 面（`settings.*`/`credentials.*` RPC、secret 角色脱敏、web 设置表单）是单独的 PR，不在本 note 已交付范围内。
+
+## 问题
+
+[settings seam](2026-07-28-user-settings-seam.md) 落地时没有生产消费方，而 LLM 适配器正是当初驱动该 seam 的那个消费方：两个适配器都在插件加载时把 `apiKey`/`baseURL`/catalog 冻结进适配器实例，改密钥或端点就要重启进程，密钥缺失则直接使插件加载失败——对个人配置页而言，这是最糟糕的首次运行姿态（「先存密钥，再重启」）。机密的走向也不对：顺理成章的做法（把 `apiKey` 放进设置文档）会被迫引入脱敏、`replace` 时的服务端回填与 dotfiles 同步告警，为一个同类产品根本没有的问题堆起一整摞缓解措施——Codex（`env_key` + auth.json）、Reasonix（`api_key_env` + 家目录 `.env`）、OpenCode/Pi（`auth.json`）、Claude Code（`apiKeyHelper`）全都把机密挡在配置文件之外。
+
+## 决策
+
+**按请求解析，而非重建 fiber。**适配器改为接收一个 options thunk（外加按流调用的凭据解析器），不再持有冻结的构造期事实，每个操作解析一次——即 Pi 的模式，连同其经测试固定的语义：跨越一次变更的两个请求看到两份配置，一个请求恰好解析一次，进行中的流保持其起始事实。这删掉了重建式设计所需的整套切换机制（`DUPLICATE_ADAPTER` 顺序问题、`NO_ADAPTER` 窗口、延迟激活状态机），并把密钥缺失变成*请求时*可行动的失败（`MISSING_CREDENTIAL` 点名每个配置入口），同时路由保持注册、catalog 保持可浏览。唯一在注册期捕获的事实——`ctx.llm` 注册表在 `registerAdapter` 时快照的重试策略（外加 pi-ai 的路由*集合*）——在其变化时于一个同步区段内原地重新注册同一适配器实例。
+
+**机密是引用，值藏在 `ctx.credentials` 背后。**配置（两个面）携带 `apiKeyEnv: DEEPSEEK_API_KEY`；三包凭据 seam 按操作解析它。`credentials-local` 把活跃进程环境（只读、优先——启动时覆盖是操作者意图，必须*可见地*只读，因此被遮蔽的写入直接拒绝而不是表面成功）叠加在 `$DSH_HOME/.env` 之上（可写、保字节行级编辑、dotenv 能逐字读回的引号阶梯、重载时整体替换快照使删除的条目绝不滞留——来自 Claude Code 增量重放（additive reapply）的教训）。适配器内的解析顺序为：字面 `apiKey` 优先（保留历史 `config.apiKey ?? env` 的可观察语义），然后是 seam，最后——仅在未挂载 seam 时——原始环境变量。
+
+**按插件划分 namespace，schema ≡ `Config`。**每个适配器注册自己的 namespace（`llm-deepseek`、`llm-pi-ai`），schema 用其插件 `Config` schema，组合 `base` 用其 `cordis.yml` 条目——settings 分节与 entry 配置是同一种 YAML 形状，`resolveAdapterOptions`/`resolveProfiles` 对两者仍是唯一的显式 resolve 步骤。存活快照若违反 schema 之外的约束，则保留最后可用事实（seam 的最后可用值哲学向上延伸一层）；entry 配置本身仍会加载失败。pi-ai 的 `providers` 改为以路由为键的字典，base 层与用户层因此按提供方合并，路由集合也由结构直接表达；数组形状响亮失败并给出迁移指引，而空字典是合法的休眠姿态——组合可以裸挂该适配器，把每一条路由都留给用户面决定。
+
+## 曾考虑的替代方案
+
+- **由桥接插件（`dsh-llm-models`）持有统一的 `models` 字典**——有了按插件划分的 namespace，就没有什么可桥接的了；它所需的适配器映射规则纯属凭空发明的间接层。
+- **把机密放进 settings.yaml 并靠 `role('secret')` 脱敏**——删除问题本身（引用）胜过缓解问题（脱敏 + 回填 + 同步告警）；编码 agent 同类产品在这一点上口径一致。
+- **注册表级的实时重试策略**——让 `providerRetryPolicy` 每次调用都重读，会静默改变所有注册都依赖的 `ctx.llm` 捕获契约；原地重新注册路由既保住该契约，又保持可观察。
+
+## 后果
+
+上手流程端到端免重启（由 `missing-credential` headless 快照与凭据轮换组合测试固定）：无密钥启动、浏览 catalog、存入密钥、再次发起提示。demo 默认挂载 `settings-local` + `credentials-local`，不再内联任何 `!!js` 密钥接线。`runLoaderSmoke` 新增 `expectedExitCode`，使按设计出现的失败面可以被固定而非被掩盖。延后事项：wire/UI 面在任何 RPC 暴露 `describe()` 之前必须对 `role('secret')` 字段脱敏；settings 层的数组仍整体替换（deepseek 的 `models` 列表）；settings 分节无法移除组合提供的 pi-ai 路由（只能覆盖或扩展）。对该 seam 的评审随后改造了存储的所在位置与谁可以读取它，让一个请求解析出一个配置世代，并使路由替换成为原子操作（[credential boundaries note](2026-07-30-credential-boundaries-and-atomic-registration.md)）。
diff --git a/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.i18n.yaml
new file mode 100644
index 0000000000..752dc0f1aa
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.md
+2026-07-30-adapter-owned-max-token-defaults.md: a522848fd4482f84859e587505b6a5e6f5c72d60
+2026-07-30-adapter-owned-max-token-defaults.zh.md: 8db6a06199fc1c4e73c86492d12dc86edafe8c7e
diff --git a/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.md b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.md
new file mode 100644
index 0000000000..a522848fd4
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.md
@@ -0,0 +1,33 @@
+# Agent Note: Adapter-owned max-token defaults
+
+Status: implemented
+
+English | [中文](2026-07-30-adapter-owned-max-token-defaults.zh.md)
+
+## Problem
+
+An LLM adapter could serialize an explicit `GenerateOptions.maxTokens`, but its Cordis configuration could not establish a reconstructable conversation default. Applying a fallback only inside provider serialization would make the wire request differ from the durable `request/header`; putting every provider's default in Agent Loop would instead transfer deployment and model policy into the provider-neutral driver.
+
+## Decision
+
+`LlmResolvedModelInfo.defaultMaxTokens` carries an optional adapter-configured per-request output cap for one exact provider/model route. `LlmService` validates it as a positive safe integer and materializes it into `LlmCallConfig.maxTokens` only when the caller omitted a value. A prepared call identifies materialized `maxTokens` and `reasoningEffort` fields as adapter defaults; explicit request or Agent options remain unmarked and therefore win without clamping.
+
+The agent loop continues to prepare calls before logging `request/header`, so the effective config and its adapter-default provenance become durable request facts before dispatch. Before the next `agent/request` waterfall, the loop removes marked fields from the proposal; exact-model resolution then materializes the current route's defaults again. A provider/model switch therefore cannot mistake a previous adapter's default for an explicit override, while explicit conversation values persist. Direct `LlmService.stream()` calls resolve the same default at the final adapter boundary. The field is a request default rather than a hard model output limit; adapters that preserve provider-owned defaults omit it.
+
+The native DeepSeek adapter exposes `maxTokens` in Cordis config with a 256,000-token default and maps the effective value to `max_tokens`. Its default context capacity is 1,000,000 tokens: both built-in V4 entries publish that exact capacity, while configured entries without capacity and unlisted pass-through ids inherit the same adapter-wide fallback.
+
+## Alternatives considered
+
+**Apply the default only in DeepSeek serialization.** Rejected because the provider wire would contain a model-visible value absent from the durable request header.
+
+**Set `AgentOptions.maxTokens` in every shipped application.** Rejected because applications would duplicate adapter deployment policy, direct LLM calls would behave differently, and selecting another provider would retain a DeepSeek-specific cap.
+
+**Represent 256,000 as a hard per-model maximum.** Rejected because the configured value is the desired request budget, not evidence that every configured endpoint rejects larger outputs. Explicit callers remain authoritative.
+
+**Leave the provider default in control.** Rejected for the native DeepSeek deployment because the product requires a stable 256,000-token conversation budget across compatible endpoints.
+
+## Consequences
+
+DeepSeek conversations send `max_tokens: 256000` by default, and the same value plus its adapter provenance appear in the session request header. Deployments can change the adapter default through `llm-deepseek.config.maxTokens`; per-agent and per-request values override it. Changing the route rematerializes the new exact adapter's default instead of carrying DeepSeek's derived value forward. Other adapters retain their existing behavior until they intentionally publish `defaultMaxTokens`.
+
+The 256,000-token output budget reserves a large part of the one-million-token context on endpoints that pre-allocate requested output. Deployments whose gateway or model supports a smaller budget must lower `maxTokens`; the explicit configuration is preferable to an undocumented provider fallback.
diff --git a/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.zh.md b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.zh.md
new file mode 100644
index 0000000000..8db6a06199
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-adapter-owned-max-token-defaults.zh.md
@@ -0,0 +1,33 @@
+# Agent Note: 适配器持有的最大 token 默认值
+
+Status: implemented
+
+[English](2026-07-30-adapter-owned-max-token-defaults.md) | 中文
+
+## Problem
+
+LLM（大语言模型）适配器可以序列化显式的 `GenerateOptions.maxTokens`，但无法通过 Cordis 配置建立可重建的对话默认值。仅在提供方序列化中应用回退，会导致协议请求与持久 `request/header` 不一致；若将各提供方默认值都放进 agent loop（智能体循环），则会把部署与模型策略转移到提供方无关的驱动器中。
+
+## Decision
+
+`LlmResolvedModelInfo.defaultMaxTokens` 携带一条确切提供方／模型路由的可选单次请求输出上限，该值由适配器配置。`LlmService` 将其校验为正安全整数，并且仅在调用方省略值时才填入 `LlmCallConfig.maxTokens`。准备后的调用会将已填入的 `maxTokens` 和 `reasoningEffort` 字段标记为适配器默认值；显式请求值或 Agent 选项不带该标记，因此优先且不会被自动调整。
+
+agent loop 仍在记录 `request/header` 前准备调用，因此生效配置及其适配器默认值来源会在分派前成为持久请求事实。下一次 `agent/request` waterfall（瀑布式事件）前，agent loop 会从提议中移除带标记字段，随后精确模型解析会再次填入当前路由的默认值。因此，切换提供方／模型不会把前一个适配器的默认值误当成显式覆盖，而显式对话值则会保留。直接调用 `LlmService.stream()` 时，也会在最终适配器边界解析同一默认值。该字段是请求默认值，而非模型输出硬上限；保留提供方持有默认值的适配器会省略它。
+
+原生 DeepSeek 适配器在 Cordis 配置中公开 `maxTokens`，默认值为 256,000 token，并将生效值映射为 `max_tokens`。其默认上下文容量为 1,000,000 token：两个内置 V4 配置项均公布这一精确容量；不含容量的已配置项和未列出的原样传递 id 则继承同一个适配器级回退值。
+
+## Alternatives considered
+
+**仅在 DeepSeek 序列化中应用默认值。** 不予采纳，因为提供方协议会包含持久请求 header 中缺失的模型可见值。
+
+**在每个已发布应用中设置 `AgentOptions.maxTokens`。** 不予采纳，因为应用会重复适配器部署策略，直接 LLM 调用的行为将不同，而且选择另一个提供方后仍会保留 DeepSeek 专用上限。
+
+**将 256,000 表示为每模型硬上限。** 不予采纳，因为配置值是所需请求预算，无法证明每个已配置端点都会拒绝更大的输出。显式调用方仍具有最终决定权。
+
+**由提供方默认值控制。** 对原生 DeepSeek 部署不予采纳，因为产品要求各兼容端点都采用稳定的 256,000 token 对话预算。
+
+## Consequences
+
+DeepSeek 对话默认发送 `max_tokens: 256000`，会话请求 header 中也会出现相同的值及其适配器来源。部署可以通过 `llm-deepseek.config.maxTokens` 更改适配器默认值；每个 agent 和每次请求的值都会覆盖它。更改路由会重新填入新的精确适配器默认值，而不是继续沿用 DeepSeek 派生出的值。其他适配器会保留现有行为，直至主动公布 `defaultMaxTokens`。
+
+对于预分配请求输出的端点，256,000 token 的输出预算会占用 1,000,000 token 上下文中的很大部分。如果部署使用的 gateway 或模型仅支持较小预算，则必须调低 `maxTokens`；显式配置优于未记录的提供方回退值。
diff --git a/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.i18n.yaml
new file mode 100644
index 0000000000..330a279b35
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.md
+2026-07-30-command-row-copy-contract.md: f6d5199389b3907780c501894e2861e6add85e77
+2026-07-30-command-row-copy-contract.zh.md: 4afaf31640c07e88765060681739f262f322769e
diff --git a/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.md b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.md
new file mode 100644
index 0000000000..f6d5199389
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.md
@@ -0,0 +1,35 @@
+# Agent Note: Command row copy is split between the row and the handler
+
+Status: implemented
+
+English | [中文](2026-07-30-command-row-copy-contract.zh.md)
+
+## Problem
+
+The web command row renders `title · summary` from one logged [command lifecycle pair](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md): the title was the dispatched line rebuilt from `command/run` (`/permission workspace-write`) and the summary was `command/done`'s verbatim `text` (`Permission preset: workspace-write.`). Both halves were written without knowing about the other, so the row said the command name twice and its argument twice — the single worst case being the row a user gets for every Access-chip pick.
+
+## Decision
+
+The row's two halves have disjoint jobs, and each side is written to its own half alone.
+
+The row title is the bare command name — no `/`, no arguments. The `/` belongs to the composer's input grammar, not to a settled record, and the argument is not the row's to report: the summary already says what the command did. `GenericCommandCard` keeps the `命令` fallback for a cross-window node whose `command/run` page fell out of the client's window.
+
+A command handler's settlement `text` therefore never labels its value with the command's own name, because the surface that renders it has already said it. `/permission` returns `preset workspace-write`, bare `current preset workspace-write (available: …)`, and for a bad argument `unknown preset "bogus" (available: …)`. Read as a row this is `permission · preset workspace-write`; read as a standalone line — the TUI appends the same text as a notice — it still states which preset now applies.
+
+The rule bans the *label*, not the vocabulary. `Permission preset: workspace-write.` lost because `Permission preset:` is a caption for a value whose caption is already the title. A domain noun that happens to contain the command's name is not a caption and stays: `/plan` keeps `Plan mode off.` and `Plan mode on. Use /plan off to leave.` (`plan · Plan mode off.` names the mode, and the tail is an instruction, not an echo), and `/goal` keeps `Goal cleared.`. A handler that finds itself writing `<Command> <noun>:` in front of its own value is the case this rule catches.
+
+The log is unchanged: `command/run` keeps the structured `name`/`args` split, so a richer registered command row can still render arguments from the same node without a second data channel.
+
+## Alternatives considered
+
+**Keep the dispatched line as the title and only shorten the settlement text.** The argument would still appear on both sides of the separator (`permission workspace-write · preset workspace-write`), which is the repetition complained about.
+
+**Drop the settlement text from the collapsed row instead of the arguments.** It inverts the row's value: the outcome is what a durable record is for, and an error text would then have nowhere to land.
+
+**Have the row strip a leading command name from the settlement text.** Presentation would silently rewrite handler-authored text, and every handler that phrased its outcome differently would defeat the heuristic.
+
+**Ban the command's name from its settlement text outright, rewriting `/plan` and `/goal` to match.** The broader ban costs more than it buys: `Plan mode off.` and `Goal cleared.` are the clearest sentences those outcomes have, in the row and as standalone TUI notices both, and the shortenings that satisfy a name ban (`off.`, `cleared.`) read as fragments. Captions are the redundancy worth removing.
+
+## Consequences
+
+Every command row gets shorter, and the rule scales: a new command's author writes its outcome without knowing which surface renders it, and no surface has to de-duplicate. The cost is that the dispatched arguments leave the collapsed row — while a command is still executing the row shows only its name and `执行中…` — and that the no-caption rule is a convention the reviewer enforces, not a gate. The `/permission` texts are pinned by the permission package's command tests, and the assembled row copy by the [seeded-history](../../../../apps/web/tests/snapshots/seeded-history/command-row.expected.md) web golden, which reaches a real settled command row keylessly because `/permission` runs entirely on the host.
diff --git a/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.zh.md b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.zh.md
new file mode 100644
index 0000000000..4afaf31640
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-command-row-copy-contract.zh.md
@@ -0,0 +1,35 @@
+# Agent Note: Command row copy is split between the row and the handler
+
+Status: implemented
+
+[English](2026-07-30-command-row-copy-contract.md) | 中文
+
+## Problem
+
+Web 命令行由一对落库的[命令生命周期事件](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md)渲染出 `标题 · 摘要`：标题是由 `command/run` 重建的分派命令行（`/permission workspace-write`），摘要是 `command/done` 的原样 `text`（`Permission preset: workspace-write.`）。两半各自成文、互不知情，于是一行里命令名出现两次、参数也出现两次——最糟的一例正是用户每次用 Access chip 切换权限时得到的那一行。
+
+## Decision
+
+命令行两半的职责互不重叠，各自只按自己那一半来写。
+
+行标题就是裸命令名——没有 `/`，也没有参数。`/` 属于编辑器的输入语法，不属于一条已落定的记录；参数也不该由这一行来报告：摘要已经说清了这条命令做了什么。对于 `command/run` 那一页已滑出客户端窗口的跨窗口节点，`GenericCommandCard` 仍保留 `命令` 兜底标题。
+
+因此，命令 handler 的落定 `text` 绝不用命令自身的名字给自己的值加标签——渲染它的界面已经说过一次了。`/permission` 返回 `preset workspace-write`，裸调用时返回 `current preset workspace-write (available: …)`，参数非法时返回 `unknown preset "bogus" (available: …)`。作为一行读是 `permission · preset workspace-write`；作为独立一句读——TUI 把同一段 text 作为通知追加——它依然说明了当下生效的是哪个预设。
+
+这条规则禁的是*标签*，不是用词。`Permission preset: workspace-write.` 之所以出局，是因为 `Permission preset:` 是给一个值加的题头，而这个题头正是标题本身。恰好含有命令名的领域名词不是题头，因此保留：`/plan` 仍返回 `Plan mode off.` 与 `Plan mode on. Use /plan off to leave.`（`plan · Plan mode off.` 说的是那个模式，句尾是一条指引，不是回声），`/goal` 仍返回 `Goal cleared.`。真正被这条规则拦下的，是 handler 在自己的值前面写出 `<命令名> <名词>：` 的那一类。
+
+日志本身未变：`command/run` 保留结构化的 `name`／`args` 拆分，因此更丰富的已注册命令行仍可从同一个节点渲染参数，无需第二条数据通道。
+
+## Alternatives considered
+
+**保留分派命令行作标题，只缩短落定文案。** 参数仍会出现在分隔点两侧（`permission workspace-write · preset workspace-write`），而这正是被指出的重复。
+
+**从折叠行中去掉落定文案，而不是去掉参数。** 这颠倒了这一行的价值：持久记录存在的意义就是结果，而错误文案将无处落脚。
+
+**由这一行从落定文案里剥掉开头的命令名。** 呈现层会悄悄改写 handler 写就的文案，而任何换一种措辞表达结果的 handler 都会让这套启发式失效。
+
+**彻底禁止命令名出现在自己的落定文案里，并把 `/plan`、`/goal` 一并改写。** 这种更宽的禁令代价大于收益：无论在行上还是作为独立的 TUI 通知，`Plan mode off.` 与 `Goal cleared.` 都是这些结果最清楚的句子，而满足"禁名字"所需的缩写（`off.`、`cleared.`）读起来只是残句。值得去掉的冗余是题头。
+
+## Consequences
+
+每一条命令行都变短了，而且这条规则可扩展：新命令的作者写结果时无需知道由哪个界面渲染，任何界面也都不必再去重。代价是分派参数离开了折叠行——命令仍在执行时，行上只有名字和 `执行中…`——以及"不加题头"这条规则是靠评审执行的约定，而非门禁。`/permission` 的文案由 permission 包的命令测试钉住，装配后的行文案由 [seeded-history](../../../../apps/web/tests/snapshots/seeded-history/command-row.expected.md) web 预期输出钉住：因为 `/permission` 完全在 host 上执行，它能无密钥地抵达一条真实的落定命令行。
diff --git a/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.i18n.yaml
new file mode 100644
index 0000000000..b5eb723680
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.md
+2026-07-30-config-plane-boundaries.md: 8a29dcc934126d6e3dfa9c0a6a308ef006017a5a
+2026-07-30-config-plane-boundaries.zh.md: c858b7dd5b6fcd61936c33f1f09d7d2e89a3cfc7
diff --git a/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.md b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.md
new file mode 100644
index 0000000000..8a29dcc934
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.md
@@ -0,0 +1,41 @@
+# Agent Note: what the configuration plane exposes, and who may overwrite what
+
+Status: implemented
+
+English | [中文](2026-07-30-config-plane-boundaries.zh.md)
+
+> Scope: the review round over the [web configuration plane](2026-07-30-web-config-plane.md) — which namespaces reach the wire, which callers reach them, and how an editor holding a partial, possibly stale view writes without destroying what it cannot see.
+
+## Problem
+
+The plane worked and was reachable by more callers, and with more authority, than its design claimed.
+
+`trustedHosts` gated only writes, so a declared LAN client could call `settings.describe` — every exposed namespace's configuration — and `credentials.describe`, which reports whether an arbitrary environment-variable name is configured and where it resolves from. That fence is a DNS-rebinding defense and says so; treating it as an authorization boundary for reads was a category error. Separately, the proxy served every registered namespace: the settings seam is deliberately general, so the first plugin to call `settings.register()` for its own configuration would silently become remotely readable and writable, without passing anywhere near a review of the web surface.
+
+The editor was worse than reachable — it was destructive. It reads the redacted descriptor, which by construction omits `role('secret')` fields. Clearing one field rebuilt the whole user section from that redacted copy and sent `settings.replace`, so a stored literal `apiKey` the wire had never returned was deleted as a side effect. Reproduced directly: `{baseURL, reasoning}` in, `apiKey` gone. Row removal took the same path. And nothing carried a version, so two tabs editing one namespace silently overwrote each other; the seam's per-namespace write queue orders writes but cannot tell a fresh writer from one replaying a stale snapshot.
+
+Three smaller defects sat beside them. `llm/adapters-updated` documented contained observer failures but only caught synchronous ones, so an async listener's rejection escaped as an unhandled rejection. llm-deepseek's retry-policy swap disposed its registration before re-registering, publishing an empty route set between the two — an observer saw the provider disappear and come back, despite a comment claiming no such window. And a transport rejection during the page's credential enrichment escaped `load()`, stranding the page in `loading` with no error shown.
+
+## Decision
+
+**Reading configuration is as privileged as writing it.** `settings.describe` and `credentials.describe` join the loopback-only set, so the whole configuration plane stays same-origin until real authentication exists. The model catalog (`llm.providers`, `llm.models`) deliberately does not: it carries provider ids, display names, and model lists — no endpoints, no key state — and a LAN client's model picker needs it. The boundary is asserted over a real HTTP server rather than a hand-assembled request, because the `Host` header a browser actually sends is what decides it.
+
+**The plane serves exactly the namespaces a registered model provider addresses.** `ctx.llm.listConfigurableProviders()` is the allow-list, so the product boundary is enforced rather than inferred from today's plugin set, and a future namespace becomes web-configurable only by joining that directory. An unregistered namespace and an unexposed one answer identically (`settings-not-exposed`), so probing cannot enumerate the registry.
+
+**A caller with a partial view names the field it means.** `Settings.mutate(ns, ops)` applies `set`/`unset` path ops to the section as it stands at the front of the write queue. The client builds ops by diffing its opening snapshot against its draft, so it mentions only fields it can see: a secret absent from both sides produces no op and survives by construction, not by care. `replace` remains the deliberate wholesale reset.
+
+**Staleness is detected, not ordered away.** Each namespace carries a monotonic `revision` over its RAW section; writes may carry `expectedRevision`, and a mismatch rejects with `SettingsConflictError` → `settings-conflict` on the wire, both revisions attached. The editor captures the revision it opened at and, on conflict, tells the user to reopen rather than replaying its snapshot.
+
+**The raw layer gets its own event.** `settings/updated` stays gated on the resolved value — that is what a consumer means by change. `settings/document-updated (ns, revision)` fires on any raw-section change, because a configuration surface must learn that a field went from inherited to overridden (same resolved value, different meaning) and that its held revision is stale. The host frame `host/settings-changed` now rides this event, and a change to an exposed provider namespace also emits `host/models-changed`: that namespace holds the provider's catalog, which no route change announces.
+
+## Alternatives considered
+
+- **A deployment-declared namespace allowlist on the proxy config** — more general, but it moves the product boundary to whoever writes cordis.yml, and an empty default would break the shipped page until every deployment opted in. The provider directory already states exactly which namespaces are model configuration.
+- **Opt-in metadata at `settings.register()`** — the most honest semantics (the namespace's owner declares its own exposure), and the largest change: the seam's public interface, both LLM plugins, and their docs. Recorded as the shape to adopt if a non-LLM namespace ever needs the plane.
+- **Distinguishing "unregistered" from "registered but unexposed"** — better diagnostics, and a namespace-enumeration oracle. The uniform answer is deliberate.
+- **Detecting conflicts by diffing instead of a revision** — comparing the submitted base against storage would work for whole-section writes, but the editor holds a REDACTED section: it cannot produce a comparable base, which is the same reason it cannot safely `replace`. A counter needs neither.
+- **Fixing the redaction gaps in this round** — `redactSecrets` walks only `object`/`dict`/`array`, so a secret behind a union, intersection, or transform is returned verbatim with an empty `secrets` list; `schema.toJSON()` carries a secret field's `.default(...)`; write-rejection messages return schema text that may quote the input; the client rehydrates the envelope through schemastery's `new Function`; and pi-ai's plain-string `headers` dict can legitimately hold `Authorization`. All confirmed, all deliberately left for a fail-closed `describeForWire()` that refuses a schema it cannot prove safe. They are recorded as `TODO(settings-wire-redaction)` and in the owning READMEs' Known Limitations rather than half-fixed here.
+
+## Consequences
+
+A LAN client on a `trustedHosts` deployment can no longer render the settings page at all; loopback is the configuration surface. A plugin that registers a settings namespace is not web-configurable until it also registers a configurable provider — deliberate, and the reason `settings-not-exposed` names the boundary in its message. `SettingsDescriptor` gained a required `revision`, so any programmatic constructor of a descriptor-shaped value must supply it, and `settings/document-updated` is a new event any provider-side listener may now observe. Clients that ignore `expectedRevision` keep last-write-wins semantics unchanged. Deferred: the fail-closed wire describe (with the `headers` and envelope-sanitization work it carries), and a non-executable browser schema protocol.
diff --git a/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.zh.md b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.zh.md
new file mode 100644
index 0000000000..c858b7dd5b
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-config-plane-boundaries.zh.md
@@ -0,0 +1,41 @@
+# Agent Note：配置面暴露什么，以及谁有权覆盖什么
+
+Status: implemented
+
+[English](2026-07-30-config-plane-boundaries.md) | 中文
+
+> 范围：针对 [Web 配置面](2026-07-30-web-config-plane.md)的评审轮——哪些 namespace 能抵达协议、哪些调用方能抵达它们，以及一个只持有局部、且可能过期视图的编辑器该如何写入，才不会毁掉它看不见的东西。
+
+## 问题
+
+这个面能用，但能触达它的调用方、以及它们所拥有的权限，都比设计声称的更多。
+
+`trustedHosts` 只拦住了写入，因此一个已声明的 LAN 客户端可以调用 `settings.describe`——拿到每个已暴露 namespace 的配置——以及 `credentials.describe`，后者会报告任意一个环境变量名是否已配置、又从何处解析。那道 fence 是 DNS 重绑定防御，它自己也是这么写的；把它当作读取的授权边界，是一次范畴错误。另一件事是：代理服务于每一个已注册的 namespace。settings seam 是刻意做成通用的，因此第一个为自身配置调用 `settings.register()` 的插件，就会悄无声息地变成可远程读写，而完全不必经过任何针对 Web 表层的评审。
+
+编辑器比"可触达"更糟——它是破坏性的。它读到的是脱敏后的 descriptor，后者按构造省略了 `role('secret')` 字段。清空其中一个字段，会用这份脱敏副本重建整个用户分节并发出 `settings.replace`，于是一个协议从未回传过的已存字面 `apiKey` 被顺带删除。这一点被直接复现：输入 `{baseURL, reasoning}`，输出时 `apiKey` 消失。删除整行走的是同一条路径。而且没有任何东西携带版本，因此两个标签页编辑同一个 namespace 会静默互相覆盖；seam 的逐 namespace 写队列只排定写入次序，分辨不出一个新写方与一个重放过期快照的写方。
+
+另有三个较小的缺陷与之并列。`llm/adapters-updated` 的文档写着观察者失败会被收容，却只捕获同步失败，于是异步 listener 的 rejection 作为 unhandled rejection 逃逸。llm-deepseek 的重试策略换路由先释放注册、再重新注册，在两者之间发布了一个空路由集——观察者会看到该提供方消失又回来，尽管注释宣称不存在这样的空窗。还有，页面做凭据增强时的传输层 rejection 会逃出 `load()`，把页面卡在 `loading` 且不显示任何错误。
+
+## 决策
+
+**读配置与写配置同样特权。**`settings.describe` 与 `credentials.describe` 加入仅限回环的集合，因此在真正的认证层出现之前，整个配置面都保持同源。模型目录（`llm.providers`、`llm.models`）刻意不在其中：它携带的是提供方 id、显示名与模型列表——没有端点、没有密钥状态——而 LAN 客户端的模型选择器正需要它。这条边界由一台真实 HTTP 服务器来断言，而不是手工拼装的请求，因为真正决定它的，是浏览器实际发出的那个 `Host` 头。
+
+**这个面恰好服务于已注册模型提供方所指向的那些 namespace。**`ctx.llm.listConfigurableProviders()` 就是允许列表，于是产品边界是被执行的，而不是从今天的插件集合里推断出来的；将来的 namespace 只有加入该目录才会变得可在 Web 上配置。未注册的 namespace 与未暴露的 namespace 得到完全相同的答复（`settings-not-exposed`），因此探测无法枚举注册表。
+
+**持有局部视图的调用方，点名它真正要改的字段。**`Settings.mutate(ns, ops)` 会把 `set`/`unset` 路径 op 施加在写入排到队首那一刻的分节上。客户端通过对比自己打开时的快照与草稿来构造 op，因此它只提及自己看得见的字段：两侧都没有的机密不会产生任何 op，它的留存是构造使然，而非小心使然。`replace` 仍是那个刻意的整体重置。
+
+**过期是被检测出来的，而不是靠排序绕过去的。**每个 namespace 都带有一个针对其**原始**分节的单调 `revision`；写入可携带 `expectedRevision`，不匹配即以 `SettingsConflictError` 拒绝——在协议上是 `settings-conflict`，并附上两个 revision。编辑器记住自己打开时的 revision，冲突时请用户重新打开，而不是把自己的快照重放上去。
+
+**原始层拥有自己的事件。**`settings/updated` 仍以解析值为门槛——那才是消费方所说的"变化"。`settings/document-updated (ns, revision)` 则在任何原始分节变化时触发，因为配置界面必须知道某个字段从继承变成了覆盖（解析值相同，含义不同），也必须知道自己持有的 revision 已经过期。host 帧 `host/settings-changed` 现在搭乘这个事件；而已暴露提供方 namespace 的变更还会额外发出 `host/models-changed`：该 namespace 正持有这个提供方的目录，而没有任何路由变更会宣告它。
+
+## 曾考虑的替代方案
+
+- **在代理配置上做部署声明式的 namespace 白名单**——更通用，但它把产品边界交给了写 cordis.yml 的人，而空的默认值会让已交付的页面在每个部署显式开启之前直接失效。提供方目录本就精确地说明了哪些 namespace 属于模型配置。
+- **在 `settings.register()` 处 opt-in metadata**——语义最正（由 namespace 的属主自行声明其暴露与否），改动也最大：seam 的公共接口、两个 LLM 插件，以及它们的文档。记录为：一旦某个非 LLM 的 namespace 确实需要这个面，就采用这个形状。
+- **区分"未注册"与"已注册但未暴露"**——诊断更好，同时也是一台 namespace 枚举预言机。统一答复是刻意为之。
+- **用 diff 而非 revision 来检测冲突**——对整分节写入而言，拿提交时的基线与存储比对是可行的，但编辑器持有的是**脱敏后**的分节：它给不出可比对的基线，这与它不能安全地 `replace` 是同一个原因。计数器两者都不需要。
+- **本轮就修掉脱敏的缺口**——`redactSecrets` 只遍历 `object`/`dict`/`array`，因此藏在 union、intersection 或 transform 之后的机密会被原样返回，且 `secrets` 列表为空；`schema.toJSON()` 会带上 secret 字段的 `.default(...)`；写入拒绝的消息返回的是可能引用了输入的 schema 文本；客户端通过 schemastery 的 `new Function` 重建信封；而 pi-ai 那个纯字符串的 `headers` 字典完全可以合法地放下 `Authorization`。全部经确认属实，也全部刻意留给一个 fail-closed 的 `describeForWire()`——它会拒绝自己无法证明安全的 schema。它们被记录为 `TODO(settings-wire-redaction)` 以及各属主 README 的 Known Limitations，而不是在这里做一半。
+
+## 影响
+
+`trustedHosts` 部署下的 LAN 客户端已经完全无法渲染设置页；配置表层就是回环。注册了 settings namespace 的插件，在它同时注册可配置提供方之前不会变得可在 Web 上配置——这是刻意的，也正是 `settings-not-exposed` 要在消息里点明这条边界的原因。`SettingsDescriptor` 新增了必填的 `revision`，因此以编程方式构造 descriptor 形状值的地方都必须提供它；`settings/document-updated` 是一个新事件，provider 侧的任何 listener 现在都可以观察它。忽略 `expectedRevision` 的客户端，其后写胜出的语义完全不变。延后事项：fail-closed 的协议 describe（连同它所承载的 `headers` 与信封净化工作），以及一套客户端无法执行的浏览器 schema 协议。
diff --git a/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.i18n.yaml
new file mode 100644
index 0000000000..98f2b0cb0d
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.md
+2026-07-30-credential-boundaries-and-atomic-registration.md: 6fe5f554acbfd804db9625fcaa794d513c8799c4
+2026-07-30-credential-boundaries-and-atomic-registration.zh.md: 3eb3b022064124aad2a389abba3063af4e2110fa
diff --git a/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.md b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.md
new file mode 100644
index 0000000000..6fe5f554ac
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.md
@@ -0,0 +1,36 @@
+# Agent Note: credential boundaries, whole-snapshot requests, and atomic route registration
+
+Status: implemented
+
+English | [中文](2026-07-30-credential-boundaries-and-atomic-registration.zh.md)
+
+> Scope: the third review round over the [request-level LLM configuration seam](2026-07-29-request-level-llm-config-credentials.md) — where a stored credential lives and who can read it, how one request's facts stay one generation, and how a route set changes without a window. Companion to the [settings write-path note](2026-07-30-settings-write-path-integrity.md), whose provider fixes this round applies to `credentials-local` and whose writer lock it promotes into `dsh-atomic-write`.
+
+## Problem
+
+Review found the credential path leaking across boundaries it had drawn. The shipped surfaces hoisted `$DSH_HOME/.env` into `process.env` before cordis booted, so on the next run `credentials-local` classified every key it had stored itself as a read-only ambient launch override: `describe()` reported `source: 'env'` with `writable: false`, `set`/`unset` rejected as shadowed, and a key stored from the web page or TUI became unrotatable and undeletable while the adapter kept using the value captured at launch. The store's own write path repeated the settings-local defects that same review round fixed (two independent chains, whole-file render from a stale cache), plus editor bugs of its own: a physical line inside another key's quoted multi-line value read as an assignment, CRLF endings degraded to LF, a multi-line entry reported `writable: true` while `set` always threw, and `credentials/updated` was emitted bare after the commit, so one broken observer made a durable write look failed. On the read side, the file's `0600` mode stops other OS users but not the model, whose bash and filesystem tools run as the same user.
+
+Two request-path defects sat beside them. DeepSeek's per-request resolution kept connection facts in a last-good snapshot but re-read the literal `apiKey` from the raw configuration, so a settings generation the resolver rejected could still put its key on the previous generation's endpoint. pi-ai handed the SDK `undefined` when a configured `apiKeyEnv` resolved to nothing, letting pi-ai's own environment discovery authenticate with an unrelated provider key — another tenant, silently billed. And its route swap disposed the old registration before creating the new one: a route another adapter owned dropped every existing route, after which the facts cache could equal the registry's, so restoring the working configuration never re-applied.
+
+## Decision
+
+**`$DSH_HOME/.env` belongs to the credential provider alone.** No surface loads it into `process.env`. The genuine launch environment and the invoking directory's `.env` (loaded by the bin) stay the read-only ambient layer, so a composition without the provider resolves keys exactly as before, while a stored key stays file-sourced and writable across restarts — proven by a real restart in the loader composition rather than by a unit assertion about `describe()`.
+
+**The stored credential has no boundary against the model, and the READMEs say so.** `0600` under a `0700` directory stops other OS users; the model's bash and filesystem tools run as that same user, and the shipped default confines nothing. What the harness does hold to is narrower and stated as exactly that: no surface hoists the document into `process.env`, and the model is never handed a resolved path to it, so reaching the value takes a deliberate read of a path it was not given. An OS-keychain provider — a store the model's processes cannot read at all — is recorded as the real answer rather than implied by a partial one.
+
+**One request, one generation.** DeepSeek's resolved snapshot carries the credential facts (literal key and reference) beside the endpoint, and `resolveApiKey` receives that snapshot instead of re-reading configuration. A rejected generation now contributes nothing at all. pi-ai defers to provider-native discovery only for a profile naming no credential; a configured reference that misses fails with `MISSING_CREDENTIAL` naming the route and the reference. The boot-time credential probe is deleted: it could run before the credentials service mounted and reported every failure as a missing key, while the first request already gives the accurate error.
+
+**Route replacement is a registry operation, not a caller sequence.** `registerAdapter` returns a handle carrying `replace(providers)`: the candidate set is validated in full first (conflicts, names, provider metadata), then swapped in one synchronous section. A refused replacement leaves the previous routes registered and serving, and the caller's facts cache only advances after the registry actually holds the new set, so reverting to a working configuration re-applies. pi-ai's registration facts are sorted by provider, so a settings document that merely reorders its keys is no longer a route change.
+
+**Contained publication for committed credential writes.** `Credentials.notifyUpdated` fans `credentials/updated` out one listener at a time; sync throws and async rejections are logged without changing the committed operation's outcome, and `INVARIANT`-coded failures rethrow after every listener ran — the same shape the settings seam uses for `settings/updated`. `installSettingsSection`'s cleanup now distinguishes its two triggers: a provider detaching still falls back to the composition entry and re-derives, while the consumer's own unload returns immediately instead of re-registering routes during teardown.
+
+## Alternatives considered
+
+- **A sandbox read-denial naming `$DSH_HOME/.env`** — implemented as a `readDenyPaths` policy field (a trailing SBPL `deny file-read* file-write*`, a `/dev/null` bwrap bind) and withdrawn on its own evidence. bwrap must create that bind's mount point inside a tree its profile has already made read-only, so it refuses the entire confinement whenever the parent directory is absent — every host that has not stored a credential yet, including a fresh install; Landlock cannot subtract from its own `/` read grant, so every confined call would report `partial` for a file it never hid. A protection that breaks confinement where it works and misreports it where it does not is worse than a documented absence. Denying the whole harness home was rejected earlier for a separate reason: it also covers `sessions/`, and `DSH_SESSION_JSONL` is a documented model-visible capability.
+- **Removing `DSH_HOME` from the model's bash environment** — considered as defense in depth and rejected as theater with a real cost: the default home is a documented convention the agent can reconstruct, while the variable is how legitimate tooling finds harness state. There is no boundary here for it to complement; hiding the pointer would only make the absence harder to see.
+- **Shipping the OS-keychain provider in this round** — it is the only design where the model's processes genuinely cannot read the secret, and it is a sibling package with three platform backends. Sizing it against the rest of this review round would have delayed every other fix; it is recorded as the deferred answer, not as a maybe.
+- **A `replaceRegistration(previous, next)` service method** — the review's shape, but it makes the caller carry the previous handle and lets it pass a mismatched one. Hanging `replace` on the registration handle makes ownership structural: only the registration that holds routes can replace them.
+
+## Consequences
+
+`update()`-adjacent behavior gained documented failure modes: a credential write can now fail on the lock deadline or on an unparsable on-disk document, and `describe()` reports `writable: false` for multi-line entries it will not rewrite. `LlmAdapter` registrants keep working unchanged (the handle is still callable as the disposer), and `DeepSeekConnectionOptions` gained credential fields, so a programmatic constructor of the adapter must supply `apiKeyEnv`. Deferred: the OS-keychain credential provider, and per-value revision checks for two writers editing one reference (last-write-wins remains the documented resolution).
diff --git a/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.zh.md b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.zh.md
new file mode 100644
index 0000000000..3eb3b02206
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-credential-boundaries-and-atomic-registration.zh.md
@@ -0,0 +1,40 @@
+# Agent Note: 凭据边界、按整份快照发起的请求与原子路由注册
+
+Status: implemented
+
+[English](2026-07-30-credential-boundaries-and-atomic-registration.md) | 中文
+
+> 范围：对[请求级 LLM（大语言模型）配置 seam](2026-07-29-request-level-llm-config-credentials.md)的第三轮评审——存下来的凭据落在哪里、谁能读到它，一次请求的事实如何保持为同一代，以及一组路由如何在不留空窗的前提下更换。本 note 与 [settings 写路径 note](2026-07-30-settings-write-path-integrity.md) 配套：本轮把那篇 note 的提供方修复套用到 `credentials-local`，并把其中的写锁提升进 `dsh-atomic-write`。
+
+## 问题
+
+评审发现，凭据路径正在越过它自己划下的边界泄漏。已交付的各个面在 Cordis 启动之前就把 `$DSH_HOME/.env` 提升进了 `process.env`，于是下一次运行时，`credentials-local` 会把它自己存下的每个键都判成来自环境的只读启动覆盖：`describe()` 报告 `source: 'env'` 且 `writable: false`，`set`/`unset` 以被遮蔽为由拒绝，从 web 页面或 TUI 存入的密钥既无法轮换也无法删除，而适配器还在继续使用启动时捕获的那个值。
+
+存储自身的写路径重演了同一轮评审在 settings-local 修掉的那些缺陷（两条相互独立的链、从陈旧缓存渲染整份文件），还叠加了编辑器自己的缺陷：另一个键的带引号多行值内部的一条物理行会被读成赋值，CRLF 行尾会退化成 LF，多行条目报告 `writable: true` 而 `set` 总是抛错，`credentials/updated` 又在提交之后裸发，于是一个出错的观察者就能让一次已经落盘的写入看起来失败。
+
+在读取一侧，文件的 `0600` 权限挡得住其他 OS 用户，却挡不住模型：它的 bash 与文件系统工具就以同一个用户身份运行。
+
+与之并排的还有两个请求路径缺陷。DeepSeek 的按请求解析把连接事实保存在最后可用快照里，却仍从原始配置重新读取字面 `apiKey`，于是被 resolver 拒绝的那一代设置，照样能把自己的密钥送到上一代的端点上。配置了 `apiKeyEnv` 却解析不到值时，pi-ai 会把 `undefined` 交给 SDK，让 pi-ai 自己的环境发现拿一个毫不相干的提供方密钥完成鉴权——那是另一个租户，账单还悄悄记在它头上。而且它的路由替换是先释放旧注册、再创建新注册：只要有一条路由已被别的适配器占有，现有路由就会被全部丢掉，此后事实缓存可能与注册表中的事实相等，于是把配置改回可用状态也不会重新生效。
+
+## 决策
+
+**`$DSH_HOME/.env` 只归凭据提供方所有。**没有任何一个面会把它加载进 `process.env`。真正的启动环境，以及调用目录中由 bin 加载的 `.env`，仍然是那一层只读的环境来源，因此不挂载该提供方的组合，解析密钥的方式与从前完全一致，而存下的密钥跨重启仍然来源于文件、仍然可写——这一点由 Loader 组合中的一次真实重启来证明，而不是靠对 `describe()` 的单元断言。
+
+**存下的凭据对模型没有边界，而 README 就是这么写的。**`0700` 目录下的 `0600` 挡得住其他 OS 用户；模型的 bash 与文件系统工具正是以同一用户身份运行，而已交付的默认值不约束任何东西。harness 真正守住的更窄，也就照这个宽度写下来：没有任何一个面会把该文档提升进 `process.env`，模型也从不会拿到它的解析后路径，因此要拿到这个值，需要刻意去读一条并未交给它的路径。OS 钥匙串（keychain）提供方——一个模型的进程根本读不到的存储——被记录为真正的答案，而不是靠一个残缺的方案去暗示它。
+
+**一次请求，一代设置。**DeepSeek 解析出的快照在端点旁一并携带凭据事实（字面密钥与引用），`resolveApiKey` 接收这份快照，而不再重新读取配置。被拒绝的那一代如今完全不再贡献任何东西。只有当一个 profile 完全没有点名凭据时，pi-ai 才交给提供方原生的发现流程；配置了引用却解析不到，就以 `MISSING_CREDENTIAL` 失败，并点名该路由与该引用。启动时的凭据探测被删除：它可能在凭据服务挂载之前就运行，并把每一种失败都报成密钥缺失，而第一次请求本就会给出准确的错误。
+
+**路由替换是注册表的操作，不是调用方的一串步骤。**`registerAdapter` 返回一个携带 `replace(providers)` 的句柄：候选集合先被完整校验（冲突、名称、提供方元数据），再在一个同步区段内完成替换。被拒绝的替换会让先前的路由保持注册并继续服务，而调用方的事实缓存只有在注册表确实持有新集合之后才会推进，因此改回可用配置时会重新生效。pi-ai 的注册事实按提供方排序，因此仅仅调换键顺序的设置文档不再算作路由变更。
+
+**已提交的凭据写入采用收容式发布。**`Credentials.notifyUpdated` 逐个监听器扇出 `credentials/updated`；同步抛错与异步 rejection 都只记日志，不改变已提交操作的结果，而带 `INVARIANT` 代码的失败会在每个监听器都运行完之后重抛——与 settings seam 处理 `settings/updated` 的形状相同。`installSettingsSection` 的清理现在会区分它的两个触发来源：提供方脱离时仍回退到组合的 entry 配置并重新推导，而消费方自身卸载时立即返回，不再在拆卸过程中重新注册路由。
+
+## 曾考虑的替代方案
+
+- **用沙箱点名拒读 `$DSH_HOME/.env`**——已按 `readDenyPaths` 策略字段实现过（末尾一条 SBPL `deny file-read* file-write*`、一条 `/dev/null` 的 bwrap bind），又被它自己的证据推翻。bwrap 必须在自己 profile 已经置为只读的目录树内部创建该 bind 的挂载点，因此只要父目录不存在，它就会拒绝整次约束——那是每一台还没有存过凭据的主机，包括全新安装；Landlock 无法从它自己对 `/` 的读取授权中减去任何东西，于是每一次受限调用都会为一个它其实从未藏起的文件报 `partial`。一项在生效之处破坏约束、在不生效之处误报的保护，比一条写明的「没有保护」更糟。至于拒掉整个 harness home，早先另有理由被否：它同时覆盖 `sessions/`，而 `DSH_SESSION_JSONL` 是一项成文的、模型可见的能力。
+- **把 `DSH_HOME` 从模型的 bash 环境中移除**——作为纵深防御考虑过，最终按「有真实代价的表演」不予采纳：默认 home 是 agent（智能体）能自行重建的成文约定，而这个变量正是正当工具链定位 harness 状态的途径。这里并不存在一条需要它来补强的边界，藏起指针只会让这份缺席更难被看见。
+- **本轮就交付 OS 钥匙串提供方**——只有这个设计能让模型的进程真正读不到机密，而它是一个带三种平台后端的兄弟包（package）。把它与本轮评审的其余工作放在一起评估体量，会拖慢其他每一项修复；它被记录为那个延后的答案，而不是一个「也许」。
+- **做成 `replaceRegistration(previous, next)` 服务方法**——这是评审给出的形状，但它要求调用方自行携带上一个句柄，也允许它传入一个不匹配的句柄。把 `replace` 挂在注册句柄上，让归属关系变成结构性的：只有持有路由的那一项注册才能替换它们。
+
+## 后果
+
+`update()` 邻近的行为多了成文的失败模式：凭据写入现在可能因锁截止时间到期、或磁盘文档无法解析而失败，`describe()` 对它不会改写的多行条目报告 `writable: false`。`LlmAdapter` 的注册方无需改动即可继续工作（句柄本身仍可当作释放器调用），`DeepSeekConnectionOptions` 则新增了凭据字段，因此以编程方式构造该适配器必须提供 `apiKeyEnv`。延后事项：OS 钥匙串凭据提供方，以及针对两个写方编辑同一引用的逐值修订号检查（后写胜出仍是成文的解决方式）。
diff --git a/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.i18n.yaml
new file mode 100644
index 0000000000..ac37214ebf
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-web-config-plane.md
+2026-07-30-web-config-plane.md: 95ede6264026f7b32e95749d00fe841f57dbf867
+2026-07-30-web-config-plane.zh.md: 6e06b69218a405055621cbd40781f9fbda9f9e6b
diff --git a/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md
new file mode 100644
index 0000000000..95ede62640
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md
@@ -0,0 +1,36 @@
+# Agent Note: the web configuration plane
+
+Status: implemented
+
+English | [中文](2026-07-30-web-config-plane.zh.md)
+
+> Scope: the wire face and web UI deferred from the [request-level LLM configuration note](2026-07-29-request-level-llm-config-credentials.md) — the `settings.*`/`credentials.*`/`llm.*` RPC domains with pushed invalidations, layered+redacted `describe()`, the llm configurable-provider directory and topology event, the standalone `dsh-client-schema-form` model layer, and the Models settings page with its hand-written provider editor. The `deepseek` → `deepseek-official` provider-route rename rides along as the enabling breaking change.
+
+## Problem
+
+PR1 made LLM adapter configuration restart-free at the seam, but the only writer was a text editor on `settings.yaml`: the web client had no wire access to settings, credentials, or provider topology, so "store a key, prompt again" still meant leaving the product. Three gaps blocked a config page rather than one: `describe()` returned only the merged effective value (a form cannot tell a user override from a composition default, and serializing it would have shipped `role('secret')` values to every browser), nothing enumerated the providers an adapter *could* run (a bare-mounted `llm-pi-ai` was invisible until configured), and the two adapters both wanted a `deepseek` route key, so the directory could not attribute routes to owning namespaces unambiguously. Hand-maintaining a form per provider was rejected outright — the schemas already exist as schemastery `Config` values, and a second source of field truth drifts.
+
+## Decision
+
+**Wire domains on the compiled RPC map, rejections as codes, invalidations as frames.** `settings.describe/update/replace`, `credentials.describe/set/unset`, `llm.providers`, and `llm.models` (claiming the reserved `host.listModels` surface) join `RpcMethodMap`, so the seven compiler-locked wiring sites keep contract, schema, handler, and client in lockstep. Seam rejections fold into `settings-rejected {ns}` / `credential-rejected {ref}` business errors (HTTP stays a carrier), and three `HostFrame`s — `host/settings-changed {ns}`, `host/credentials-changed {ref}`, `host/models-changed` — follow the `host/commands-changed` shape so every client converges without polling. Writes join `pickDirectory`/`openPath` in the connection guard's privileged set: loopback + same-origin or 403, because a LAN-exposed dsh web must not accept config mutation from another origin.
+
+**`describe()` grows layers and structural secret redaction.** `SettingsDescriptor` carries `base`/`user` beside the effective value, so the form marks "overridden" by presence in the user layer, not value inequality (an override *equal* to the base is still an override). `describe({ redactSecrets: true })` — mandatory at every wire face — strips `role('secret')` subtrees from all three layers via a pure structural walk of the schema (object/dict/array containers; a secret-role subtree is one opaque leaf) and enumerates the stripped slots as `{path, set}`, so a page can render write-only inputs without ever receiving a value.
+
+**The llm seam declares configurability and announces topology.** `registerConfigurableProviders()` is an all-or-nothing, fiber-scoped directory of `{provider, displayName, settingsNs, settingsPath}` — the addressing a config page needs to open the right settings subtree for a route that may not exist yet; `listConfigurableProviders()` merges with live routes in the wire handler so undeclared live routes still report active. The zero-payload `'llm/adapters-updated'` event fires from all four registration/unregistration commit points with contained listener dispatch (INVARIANT rethrow), following the settings/commands precedent. `llm-deepseek`'s route renamed to `deepseek-official` because the pi-ai catalog legitimately owns `deepseek` as an aggregator entry; pre-release stance, no alias.
+
+**A hand-written editor over a schema model layer.** `dsh-client-schema-form` rehydrates the wire's `toJSON()` envelope into live schemastery nodes for validation, path resolution, and immutable draft editing — but no generic rendering: the first cut shipped a full schema-driven form renderer, and the resulting page was an unstyled schema dump (every advanced field flattened onto the card, raw field names as labels, the `retryPolicy` unsupported-fallback in the main flow). The user chose the hand-written direction over adding a hint/grouping system, and a second round removed the reference input entirely: the card's primary field is one **API key** input, a whole-section provider without a configured key opens as its setup card, and the collapsed 自定义设置 fold carries the curated per-family extras (`baseURL` for both families, plus `reasoningEffort` for deepseek / `reasoning` for pi-ai), with every other field owned by `settings.yaml`. Validation still runs the rehydrated schema before writing, so a hand-coded field that drifts from its schema fails loud on save rather than silently.
+
+**The Models page is a three-domain join with seam-shaped apply semantics.** Rows are configured providers; the add card's select is the dormant directory remainder; badges come from route liveness. The key path stays reference-shaped without ever showing a reference: a typed key stores **write-only** through `credentials.set` under the profile's `apiKeyEnv`, deriving `<ROUTE>_API_KEY` when none exists (the pi-ai profile records the derivation), so `settings.yaml` never carries a key value and the wholesale `settings.replace` a removal needs can never drop a sibling's secret. An edit without removals lands as a minimal `settings.update` merge patch; clearing a fold field back to inherited or deleting a row replaces the whole user section, because merge semantics cannot express removal.
+
+## Alternatives considered
+
+- **Serving JSON Schema over the wire** — schemastery's `toJSON()` envelope round-trips `role()`/meta and rehydrates into the validator the client already ships for drafts; converting to JSON Schema loses exactly the role annotations the credential control and secret redaction key on.
+- **A generic schema-driven form renderer** — implemented first, then replaced: field truth without visual hierarchy produced an ugly, unusable card, and making it good meant building a hint vocabulary (primary/advanced grouping, per-field descriptions, array item cards) rivaling the hand-written editor in cost while still fitting no mockup exactly. Two schemas exist today (the deepseek `Config` and the shared pi-ai profile), so hand-writing is two thin namespace-keyed layouts; the drift risk is bounded by save-time schema validation and by unknown fields staying untouched in the document.
+- **Masking secrets per-field with sentinel backfill on `replace`** — the PR1 decision (secrets are references) already deleted the stored-literal case for the product default; structural redaction plus a write-only credential path handles the residue without teaching every writer a sentinel protocol.
+- **Storing the typed key as a literal `apiKey` setting** — the v1 "one API key input" requirement could have written the literal into the profile, but every UI removal path rebuilds the user section from the *redacted* layers, so any reset or row deletion would silently drop stored sibling keys; deriving a reference keeps the input single-field while keeping `settings.yaml` secret-free and every replace safe.
+- **A `models` bridge plugin owning provider configuration** — same rejection as PR1: per-plugin namespaces plus a four-field directory declaration give the UI everything it needs; the bridge's unified dict re-imports the adapter-mapping indirection.
+- **Page-side polling instead of pushed frames** — the mux already carries `host/commands-changed`; three more frames cost one shape each and make a second tab, an external `settings.yaml` edit, and a settings-born route converge at event speed.
+
+## Consequences
+
+The whole loop is pinned keyless in the browser lane (`apps/web/tests/models-settings.e2e.ts`): the add card offers the dormant pi-ai catalog, adding `minimax-cn` with a typed key writes the reference-only profile into `settings.yaml`, stores the value into the harness home's `.env` under the derived `MINIMAX_CN_API_KEY`, registers the route live on the topology frame, and the customized fold merges `reasoning` beside the reference — zero model calls, ARIA goldens for the add-card and configured states, plus a scaffold `harnessHome` so tests never touch a real `~/.dsh` (the provider under test is one whose derived reference cannot collide with a developer's exported keys). The rename touched 239 files (fixtures, goldens, docs, python) in one commit with no compatibility alias. The renderer replacement cost one commit and no wire change: apply semantics, redaction, and the directory join were renderer-agnostic all along. Deferred: a per-row models preview (the picker already lists models), a page address for live routes that never declared configurability, and the documented reset edge — a `settings.replace` cannot re-supply a stored *literal* secret in the replaced subtree, which the reference-based default makes unreachable.
diff --git a/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.zh.md b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.zh.md
new file mode 100644
index 0000000000..6e06b69218
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-07-30-web-config-plane.zh.md
@@ -0,0 +1,36 @@
+# Agent Note：web 配置平面
+
+Status: implemented
+
+[English](2026-07-30-web-config-plane.md) | 中文
+
+> 范围：[请求级 LLM 配置 note](2026-07-29-request-level-llm-config-credentials.md) 中延后的 wire 面与 web UI——带推送式失效的 `settings.*`/`credentials.*`/`llm.*` RPC 领域、分层且脱敏的 `describe()`、llm 可配置提供方目录与拓扑事件、独立的 `dsh-client-schema-form` 模型层，以及带手写提供方编辑器的 Models 设置页。`deepseek` → `deepseek-official` 提供方路由重命名作为解锁前提的破坏性变更一并搭车合入。
+
+## 问题
+
+PR1 让 LLM（大语言模型）适配器配置在 seam 层面免重启，但唯一的写入方还是直接编辑 `settings.yaml` 的文本编辑器：web 客户端没有触达设置、凭据或提供方拓扑的任何 wire 通道，「存入密钥、再次发起提示」于是仍意味着离开产品本身。挡住配置页的缺口不是一个，而是三个：`describe()` 只返回合并后的生效值（表单分不清用户覆盖与组合默认值，而且照原样序列化会把 `role('secret')` 的值发到每一个浏览器）；没有任何东西枚举适配器*可以*运行的提供方（裸挂载的 `llm-pi-ai` 在配置之前完全不可见）；两个适配器又都想要 `deepseek` 这个路由键，目录因此无法无歧义地把路由归到拥有它的 namespace 名下。为每个提供方手工维护一份表单被直接否决——schema 已经以 schemastery `Config` 值的形式存在，第二份字段真源注定漂移。
+
+## 决策
+
+**wire 领域挂上编译期 RPC 映射，拒绝落为错误码，失效落为帧。**`settings.describe/update/replace`、`credentials.describe/set/unset`、`llm.providers` 与 `llm.models`（认领预留的 `host.listModels` 面）一同加入 `RpcMethodMap`，七处由编译器锁定的接线位点因此让契约、schema、处理器与客户端保持步调一致。seam 侧的拒绝折叠为 `settings-rejected {ns}`/`credential-rejected {ref}` 业务错误（HTTP 仍只是载体），三个 `HostFrame`——`host/settings-changed {ns}`、`host/credentials-changed {ref}`、`host/models-changed`——沿用 `host/commands-changed` 的形状，因此每个客户端都无需轮询即可收敛。写入与 `pickDirectory`/`openPath` 一起进入连接守卫的特权集合：回环 + 同源，否则 403，因为暴露在局域网上的 dsh web 绝不能接受来自其他源的配置修改。
+
+**`describe()` 增加分层与结构化 secret 脱敏。**`SettingsDescriptor` 在生效值之外携带 `base`/`user`，表单据此按「字段是否出现在用户层」来标记「已覆盖」，而非按值是否不等（与 base *相等*的覆盖仍然是覆盖）。`describe({ redactSecrets: true })`——在每个 wire 面都强制启用——经由对 schema 的纯结构遍历（object/dict/array 容器；secret 角色子树整体是一个不透明叶节点）从全部三层剥除 `role('secret')` 子树，并把剥除的槽位枚举为 `{path, set}`，页面因此不必收到任何值就能渲染只写输入框。
+
+**llm seam 声明可配置性并公布拓扑。**`registerConfigurableProviders()` 是一个全有或全无、以 fiber 为作用域的目录，条目为 `{provider, displayName, settingsNs, settingsPath}`——这正是配置页要为一条可能尚不存在的路由打开正确设置子树时所需要的寻址；`listConfigurableProviders()` 在 wire 处理器里与存活路由合并，未声明的存活路由因此仍报告为激活。零负载的 `'llm/adapters-updated'` 事件从全部四个注册／注销提交点触发，listener 派发带异常隔离（INVARIANT 重抛），沿用 settings/commands 的先例。`llm-deepseek` 的路由重命名为 `deepseek-official`，因为 pi-ai catalog 名正言顺地拥有 `deepseek` 这个聚合器条目；依预发布立场，不设别名。
+
+**架在 schema 模型层之上的手写编辑器。**`dsh-client-schema-form` 把 wire 的 `toJSON()` 信封还原（rehydrate）为活的 schemastery 节点，用于校验、路径解析与不可变草稿编辑——但不做通用渲染：第一版交付了完整的 schema 驱动表单渲染器，得到的却是一个未加样式、把 schema 原样倾倒出来的页面（每个进阶字段都平铺到卡片上、原始字段名直接充当标签、`retryPolicy` 的「不支持」回退落在主流程里）。用户没有再加一套提示／分组系统，而是选择了手写方向，第二轮又把引用输入框整个移除：卡片的主字段是一个 **API 密钥**输入框，未配置密钥的整分节提供方会以其设置卡片的形式打开，收起的「自定义设置」折叠区承载按家族精选的额外字段（两个家族都有 `baseURL`，另加 deepseek 的 `reasoningEffort`／pi-ai 的 `reasoning`），其余每个字段都归 `settings.yaml` 所有。校验仍会在写入前运行还原出的 schema，因此偏离其 schema 的手写字段会在保存时大声失败，而非静默失败。
+
+**Models 页是一次三领域联接，应用语义与 seam 同形。**每一行是一个已配置的提供方；「新增」卡片的选择框是可配置提供方目录中剩余的休眠条目；徽标来自路由存活状态。密钥通道保持引用形态，却从不展示任何引用：键入的密钥经 `credentials.set` **只写**存入 profile 的 `apiKeyEnv` 之下，引用不存在时便派生 `<ROUTE>_API_KEY`（pi-ai profile 会记录该派生），因此 `settings.yaml` 从不携带密钥值，删除所需的整体 `settings.replace` 也绝不可能丢掉兄弟条目的机密。不含删除的编辑以一次最小的 `settings.update` 合并 patch 落地；把折叠区字段清回继承值或删除整行则经 `settings.replace` 替换整个用户分节，因为合并语义表达不了删除。
+
+## 曾考虑的替代方案
+
+- **在 wire 上改发 JSON Schema**——schemastery 的 `toJSON()` 信封能往返保留 `role()`/meta，并还原成客户端为草稿校验本就自带的那个校验器；转换成 JSON Schema 丢掉的恰恰是凭据控件与 secret 脱敏所依赖的角色注解。
+- **通用的 schema 驱动表单渲染器**——先实现、后被替换：如实呈现字段却缺失视觉层级，产出的卡片丑陋且不可用；要把它做好，就意味着构建一套提示词汇（主要／进阶分组、逐字段描述、数组项卡片），成本堪比手写编辑器，却仍无法与任何设计稿完全吻合。今天存在两份 schema（deepseek 的 `Config` 与共享的 pi-ai profile），手写因此就是两套以 namespace 为键的薄布局；漂移风险由保存时的 schema 校验以及未知字段在文档中的原样保留共同约束。
+- **逐字段脱敏机密并在 `replace` 时回填哨兵值**——PR1 的决策（机密是引用）已经为产品默认形态删掉了「存储字面量」这种情况；结构化脱敏加上只写的凭据通道足以处理残余情形，无需让每个写入方都学会一套哨兵协议。
+- **把键入的密钥存成字面 `apiKey` 设置**——v1「单个 API 密钥输入框」的需求本可以把字面量直接写进 profile，但 UI 的每条删除路径都会从*脱敏后的*各层重建用户分节，任何重置或整行删除都会静默丢掉已存储的兄弟密钥；派生引用让输入保持单字段，同时让 `settings.yaml` 不含机密、每一次 replace 都安全。
+- **由 `models` 桥接插件持有提供方配置**——与 PR1 相同的否决理由：按插件划分的 namespace 加上四字段的目录声明已经给了 UI 需要的一切；桥接层的统一字典会把适配器映射那层间接重新引进来。
+- **页面侧轮询而非推送帧**——mux 已经承载 `host/commands-changed`；再加三个帧各自只多一个形状的成本，就让第二个标签页、外部的 `settings.yaml` 编辑和由设置催生的路由都以事件速度收敛。
+
+## 后果
+
+整条闭环以无密钥方式固定在浏览器测试通道（`apps/web/tests/models-settings.e2e.ts`）：「新增」卡片提供休眠的 pi-ai catalog，携键入的密钥添加 `minimax-cn` 会把只含引用的 profile 写入 `settings.yaml`、把密钥值存入 harness 家目录 `.env` 中派生的 `MINIMAX_CN_API_KEY` 之下、路由随拓扑帧注册为存活，「自定义设置」折叠区则把 `reasoning` 合并到引用旁边——全程零模型调用，「新增」卡片态与已配置态各有 ARIA golden，另有脚手架式的 `harnessHome`，测试绝不触碰真实的 `~/.dsh`（受测提供方是派生引用不可能与开发者已导出密钥相撞的那一个）。这次重命名在一次提交中触及 239 个文件（fixture（测试前置数据）、golden、文档、python），未保留兼容别名。替换渲染器只花了一次提交，且没有任何 wire 变更：应用语义、脱敏与目录联接从一开始就与渲染器无关。延后事项：每行的模型预览（选择器已能列出模型）、为从未声明可配置性的存活路由提供页面地址，以及已记录在案的重置边界情形——`settings.replace` 无法在被替换的子树里重新补上已存储的*字面量*机密，而基于引用的默认形态让这种情况根本无从出现。
diff --git a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.i18n.yaml b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.i18n.yaml
index bdec24c41a..887b18118d 100644
--- a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.i18n.yaml
+++ b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.md
-2026-07-28-sdk-max-output-tokens.md: 5db48f21892d56addea7b72f73319f9dbfd1e71f
-2026-07-28-sdk-max-output-tokens.zh.md: 38b172718716d100726188163ff22be9ea0a7325
+2026-07-28-sdk-max-output-tokens.md: 3ba3e226d64b7d3d192d67bd88af463d2b0d9dc5
+2026-07-28-sdk-max-output-tokens.zh.md: aec566011d2d7a311b4de509c47ebba383c3b0d7
diff --git a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.md b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.md
index 5db48f2189..3ba3e226d6 100644
--- a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.md
+++ b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.md
@@ -12,7 +12,7 @@ The Python and TypeScript SDKs could select a provider and model but could not b
 
 The high-level SDKs expose one optional process-wide output cap: Python names it `max_tokens`, TypeScript names it `maxTokens`, and the shared `initialize` wire payload carries `maxTokens`. The JSON-RPC server rejects values that are not positive safe integers and stores the accepted cap with its provider/model route.
 
-Each SDK-created root Agent receives the cap through `AgentOptions.maxTokens`. Agent Loop places that value in the initial `LlmCallConfig`, logs it in the request header, and reconstructs every dispatched conversation request from that durable header. Omitting the option leaves `maxTokens` absent so the selected provider retains its default.
+Each SDK-created root Agent receives the cap through `AgentOptions.maxTokens`. Agent Loop places that value in the initial `LlmCallConfig`; final call preparation preserves the explicit value or materializes an exact-model adapter default, logs the effective cap in the request header, and reconstructs every dispatched conversation request from that durable header. Omitting the SDK option therefore allows the selected adapter or provider route default to apply.
 
 In-process subagents inherit the parent's provider, model, and output cap. An explicit `SubagentStartRequest.agentOptions.maxTokens`, including one configured by `dsh-tool-subagent`, overrides the inherited value for that child and its descendants. Out-of-process providers own the configuration of their separate runtime; `subagent-dsh-sdk` therefore exposes its own optional `maxTokens` and forwards it through that child runtime's SDK handshake.
 
@@ -20,7 +20,7 @@ Compaction, session-title generation, web search, and other auxiliary calls keep
 
 ## Alternatives considered
 
-**Set an adapter environment variable.** This would be DeepSeek-adapter-specific, invisible in the session request header, ineffective for intercepted or alternate adapters, and easy to confuse with a provider default. The cap belongs in provider-neutral request configuration.
+**Set only an adapter environment variable.** A serializer-private fallback would be DeepSeek-adapter-specific, invisible in the session request header, ineffective for intercepted or alternate adapters, and easy to confuse with a provider default. Adapter-owned defaults may instead be exposed as exact-model metadata and materialized into provider-neutral request configuration before logging.
 
 **Add `maxTokens` to every `session/prompt`.** Per-turn mutation would enlarge the wire and introduce request-config transitions that callers do not need for the current evaluation use case. A runtime initialization option gives every session in one SDK process the same reproducible budget.
 
diff --git a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.zh.md b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.zh.md
index 38b1727187..aec566011d 100644
--- a/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.zh.md
+++ b/.agents/notes/implemented/feature/2026-07-28-sdk-max-output-tokens.zh.md
@@ -12,7 +12,7 @@ Python 与 TypeScript SDK 可以选择提供方和模型，却无法限制对话
 
 高层 SDK 公开一个可选的进程级输出上限：Python 命名为 `max_tokens`，TypeScript 命名为 `maxTokens`，共享的 `initialize` 线载荷使用 `maxTokens`。JSON-RPC 服务端拒绝非正安全整数，并将通过校验的上限与提供方／模型路由一同保存。
 
-每个由 SDK 创建的根 Agent 都通过 `AgentOptions.maxTokens` 获得该上限。Agent Loop 将它放入初始 `LlmCallConfig`、记录到请求 header，并从该持久化 header 重建每次分派的对话请求。省略该选项时，`maxTokens` 保持缺失，由所选提供方保留默认值。
+每个由 SDK 创建的根 Agent 都通过 `AgentOptions.maxTokens` 获得该上限。Agent Loop 将它放入初始 `LlmCallConfig`；最终调用准备会保留显式值，或填入确切模型的适配器默认值，再将生效上限记录到请求 header，并从该持久化 header 重建每次分派的对话请求。因此，省略 SDK 选项时会应用所选适配器或提供方路由的默认值。
 
 进程内 subagent 继承父级的提供方、模型和输出上限。显式的 `SubagentStartRequest.agentOptions.maxTokens`（包括通过 `dsh-tool-subagent` 配置的值）会覆盖该子级及其后代的继承值。进程外提供方自行持有其独立运行时的配置；因此 `subagent-dsh-sdk` 公开独立的可选 `maxTokens`，并通过该子运行时自己的 SDK 握手传入。
 
@@ -20,7 +20,7 @@ Python 与 TypeScript SDK 可以选择提供方和模型，却无法限制对话
 
 ## Alternatives considered
 
-**设置适配器环境变量。** 这种方式仅适用于 DeepSeek 适配器，不会出现在会话请求 header 中，对被拦截请求或其他适配器无效，也容易与提供方默认值混淆。该上限属于提供方无关的请求配置。
+**仅设置适配器环境变量。** 序列化器私有回退仅适用于 DeepSeek 适配器，不会出现在会话请求 header 中，对被拦截请求或其他适配器无效，也容易与提供方默认值混淆。适配器持有的默认值可以改为通过确切模型元数据公开，并在记录前填入提供方无关的请求配置。
 
 **在每个 `session/prompt` 上增加 `maxTokens`。** 按轮次修改会扩大线协议，并引入当前评测用例不需要的请求配置转换。运行时初始化选项可让一个 SDK 进程中的每个会话拥有相同、可重现的预算。
 
diff --git a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.i18n.yaml b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.i18n.yaml
index f2e1183fe5..9cb40d0bbc 100644
--- a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.i18n.yaml
+++ b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md
-2026-07-29-web-message-icon-actions-and-clock.md: ccc9b127d2fcf276fa415ec0ede8b062e45f3df5
-2026-07-29-web-message-icon-actions-and-clock.zh.md: fb4b82a22478b2de38755368ec48a5dca420e79d
+2026-07-29-web-message-icon-actions-and-clock.md: f43f7f9c9687e4494993d7e225d11cf6446a9954
+2026-07-29-web-message-icon-actions-and-clock.zh.md: 866fae79f6ad3ea2cb80e5443d2cf5f763562d29
diff --git a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md
index ccc9b127d2..f43f7f9c96 100644
--- a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md
+++ b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md
@@ -10,9 +10,9 @@ The web chat user bubble already had copy / branch / edit IconActions but no clo
 
 ## Decision
 
-**User bubbles prepend a date-aware local clock to the existing IconActions row; finalized assistant *content* nodes (non-empty text blocks) append a copy / branch / clock row with `margin-top: 16px`; both seats stay visible whenever mounted and re-format at the next local midnight.**
+**User bubbles prepend a date-aware local clock to the existing IconActions row; the last content-text assistant of each turn appends a copy / branch / clock row with `margin-top: 16px`; both seats stay visible whenever mounted and re-format at the next local midnight.**
 
-Both seats format `node.time` through `formatMessageClock`: same calendar day → `HH:mm`, earlier this year → `M月D日 HH:mm`, other years → `YYYY年M月D日 HH:mm`. `useCalendarDay` is a component-local day tick (timeout to the next local midnight) so memoized rows re-render when the calendar day changes without a new framework hook. `MessageItem` places the label before copy (figma `388:20051`). `AssistantMarkdown` places it after branch (figma `43:32997`) only when `streaming` is false, the event time is known, and the node has non-empty text content; Think-only nodes and the streaming tail omit the row. Copy writes joined text blocks. Both message rows pass their event's `seq` to the same fork callback; [Web session fork actions](2026-07-27-web-session-fork-actions.md) define the real mutation contract. Clipboard write and the clock helpers live in `message-chrome.ts`. The assembled surface is pinned by `apps/web/tests/message-actions.e2e.ts` (cold-seeded history + aria golden); aria normalization collapses every clock shape to `{{clock}}`.
+Both seats format `node.time` through `formatMessageClock`: same calendar day → `HH:mm`, earlier this year → `M月D日 HH:mm`, other years → `YYYY年M月D日 HH:mm`. `useCalendarDay` is a component-local day tick (timeout to the next local midnight) so memoized rows re-render when the calendar day changes without a new framework hook. `MessageItem` places the label before copy (figma `388:20051`). `ChatView` derives turn-tail seqs via `assistantActionsSeqs` and withholds `time` for mid-turn content; `AssistantMarkdown` places the row after branch (figma `43:32997`) only when `streaming` is false, the event time is known, and the node has non-empty text content. Think-only nodes, mid-turn narration, and the streaming tail omit the row. Copy writes joined text blocks. Both message rows pass their event's `seq` to the same fork callback; [Web session fork actions](2026-07-27-web-session-fork-actions.md) define the real mutation contract. Clipboard write and the clock helpers live in `message-chrome.ts`. The assembled surface is pinned by `apps/web/tests/message-actions.e2e.ts` (cold-seeded history + aria golden); aria normalization collapses every clock shape to `{{clock}}`.
 
 ## Alternatives considered
 
@@ -20,6 +20,8 @@ Both seats format `node.time` through `formatMessageClock`: same calendar day 
 
 **Put IconActions under every finalized assistant node (including Think-only).** Rejected: copy has nothing useful to write without text content, and repeating the chrome under every step/Think row clutters the flow; only content output owns the seat.
 
+**Put IconActions under every content-text assistant in a multi-step turn.** Rejected: mid-turn narration (text before tools) is not the settled answer; repeating copy/branch/clock under each step clutters the flow. Only the last content assistant of the turn owns the seat.
+
 **Hover-reveal the action row on hover-capable pointers.** Rejected: once the row exists it should stay discoverable; opacity hiding made the chrome easy to miss and required parent hover selectors that duplicated the mount gate.
 
 **Let the IconActions decision also define session fork semantics.** Rejected: this note owns only message chrome, clocks, and mount gating; boundary selection, failure behavior, and switching semantics belong to the separate [Web session fork actions](2026-07-27-web-session-fork-actions.md), keeping presentation components from becoming a second home for session mutation.
@@ -28,4 +30,4 @@ Both seats format `node.time` through `formatMessageClock`: same calendar day 
 
 ## Consequences
 
-Settled assistant content answers expose copy, branch, and the event clock as soon as the row mounts; Think-only nodes stay chrome-free. User and assistant clocks share the same day/year widening rules and refresh after midnight without a message mutation. Per-message paging remains a deferred footer seat in the package README. Package tests pin the three clock shapes, the midnight widen, the content-only assistant gate, and the respective event `seq` values passed by the user and assistant branch buttons; the web e2e scenario pins the assembled IconActions chrome.
+Each turn's last settled content answer exposes copy, branch, and the event clock as soon as the row mounts; mid-turn content and Think-only nodes stay chrome-free. User and assistant clocks share the same day/year widening rules and refresh after midnight without a message mutation. Per-message paging remains a deferred footer seat in the package README. Package tests pin the three clock shapes, the midnight widen, the content-only assistant gate, the turn-tail seq gate, and the respective event `seq` values passed by the user and assistant branch buttons; the web e2e scenario pins the assembled IconActions chrome.
diff --git a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.zh.md b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.zh.md
index fb4b82a224..866fae79f6 100644
--- a/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.zh.md
+++ b/.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.zh.md
@@ -10,9 +10,9 @@ Web 聊天的用户气泡已有复制／分支／编辑 IconActions，但没有
 
 ## 决策
 
-**用户气泡在既有 IconActions 行前追加感知日期的本地时钟；已定稿的 assistant *内容*节点（非空 text 块）在正文下追加带 `margin-top: 16px` 的复制／分支／时钟；两边只要挂载就保持可见，并在下一个本地午夜重新格式化。**
+**用户气泡在既有 IconActions 行前追加感知日期的本地时钟；每个轮次中最后一条带 text 内容的 assistant 在正文下追加带 `margin-top: 16px` 的复制／分支／时钟；两边只要挂载就保持可见，并在下一个本地午夜重新格式化。**
 
-两边都通过 `formatMessageClock` 格式化 `node.time`：同一日历日 → `HH:mm`，同年更早 → `M月D日 HH:mm`，跨年 → `YYYY年M月D日 HH:mm`。`useCalendarDay` 是组件本地的日刻度（定时到下一个本地午夜），因此 memo 行在日历日变化时会重渲染，且不新增框架 hook。`MessageItem` 把标签放在复制之前（figma `388:20051`）。`AssistantMarkdown` 把它放在分支之后（figma `43:32997`），且仅在 `streaming` 为 false、已知事件时间、且节点含非空 text 内容时渲染；纯 Think 节点与流式尾部省略该行。复制写入拼接后的 text 块。两种消息行都把自己的事件 `seq` 交给同一个 fork 回调；真实 mutation 契约由 [Web session fork 操作](2026-07-27-web-session-fork-actions.md)定义。剪贴板写入与时钟辅助函数放在 `message-chrome.ts`。组装面由 `apps/web/tests/message-actions.e2e.ts`（冷 seed 历史 + aria golden）钉住；aria 归一化把每种时钟形态折叠为 `{{clock}}`。
+两边都通过 `formatMessageClock` 格式化 `node.time`：同一日历日 → `HH:mm`，同年更早 → `M月D日 HH:mm`，跨年 → `YYYY年M月D日 HH:mm`。`useCalendarDay` 是组件本地的日刻度（定时到下一个本地午夜），因此 memo 行在日历日变化时会重渲染，且不新增框架 hook。`MessageItem` 把标签放在复制之前（figma `388:20051`）。`ChatView` 通过 `assistantActionsSeqs` 推导轮次尾部的 seq，并不为轮次中间的内容传入 `time`；`AssistantMarkdown` 把该行放在分支之后（figma `43:32997`），且仅在 `streaming` 为 false、已知事件时间、且节点含非空 text 内容时渲染。纯 Think 节点、轮次中间的叙述与流式尾部省略该行。复制写入拼接后的 text 块。两种消息行都把自己的事件 `seq` 交给同一个 fork 回调；真实 mutation 契约由 [Web session fork 操作](2026-07-27-web-session-fork-actions.md)定义。剪贴板写入与时钟辅助函数放在 `message-chrome.ts`。组装面由 `apps/web/tests/message-actions.e2e.ts`（冷 seed 历史 + aria golden）钉住；aria 归一化把每种时钟形态折叠为 `{{clock}}`。
 
 ## 曾考虑的方案
 
@@ -20,6 +20,8 @@ Web 聊天的用户气泡已有复制／分支／编辑 IconActions，但没有
 
 **给每个已定稿 assistant 节点（含纯 Think）都挂 IconActions。** 否决：没有 text 内容时复制没有可写内容，且在每一步／Think 下重复 chrome 会打乱流程；只有内容输出拥有该座位。
 
+**给多步骤轮次中的每一条带 text 内容的 assistant 都挂 IconActions。** 否决：轮次中间的叙述（工具调用前的 text）不是已定稿答案；在每一步下重复复制／分支／时钟会打乱流程。只有该轮次中最后一条内容 assistant 拥有该座位。
+
 **在具备 hover 能力的指针上用 hover 才揭示操作行。** 否决：行一旦存在就应保持可发现；用 opacity 隐藏容易漏看，且需要父级 hover 选择器重复挂载门控。
 
 **由 IconActions 决策同时定义 session fork 语义。** 否决：本笔记只拥有消息 chrome、时钟与挂载门控；边界选择、失败行为和切换语义属于独立的 [Web session fork 操作](2026-07-27-web-session-fork-actions.md)，避免展示组件成为 session mutation 的第二正家。
@@ -28,4 +30,4 @@ Web 聊天的用户气泡已有复制／分支／编辑 IconActions，但没有
 
 ## 后果
 
-已定稿的 assistant 内容回答在行挂载后立刻暴露复制、分支与事件时钟；纯 Think 节点不带 chrome。用户与 assistant 时钟共用同一套跨天／跨年加宽规则，并在午夜后无需消息变更即可刷新。逐消息分页仍是包 README 中的暂缓 footer 座位。包级测试钉住三种时钟形态、午夜加宽、assistant 仅内容门控，以及 user/assistant 分支按钮各自传递的事件 `seq`；Web e2e 场景钉住组装后的 IconActions chrome。
+每个轮次中最后一条已定稿的内容回答在行挂载后立刻暴露复制、分支与事件时钟；轮次中间的内容与纯 Think 节点不带 chrome。用户与 assistant 时钟共用同一套跨天／跨年加宽规则，并在午夜后无需消息变更即可刷新。逐消息分页仍是包 README 中的暂缓 footer 座位。包级测试钉住三种时钟形态、午夜加宽、assistant 仅内容门控、轮次尾部 seq 门控，以及 user/assistant 分支按钮各自传递的事件 `seq`；Web e2e 场景钉住组装后的 IconActions chrome。
diff --git a/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.i18n.yaml
new file mode 100644
index 0000000000..dde9f82a6d
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md
+2026-07-30-deepseek-onboarding-credential-setup.md: 571b81a1a2e6f392f2553070048964d49941aae9
+2026-07-30-deepseek-onboarding-credential-setup.zh.md: 744c30814f84d063f196ce20ba48fb993d0b7713
diff --git a/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md
new file mode 100644
index 0000000000..571b81a1a2
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md
@@ -0,0 +1,33 @@
+# Agent Note: official DeepSeek first-run credential setup
+
+Status: implemented
+
+English | [中文](2026-07-30-deepseek-onboarding-credential-setup.zh.md)
+
+## Problem
+
+The [web configuration plane](../architecture/2026-07-30-web-config-plane.md) makes provider settings and credentials live-editable, but a first-time user still lands on the empty conversation Hero without an actionable explanation when the shipped `deepseek-official` route has no credential. The Models page can repair that state, yet requiring the user to discover it weakens onboarding. A prompt must not confuse a missing credential with a missing adapter: the browser can store a value for an existing credential reference, but it cannot dynamically mount the `llm-deepseek` Cordis plugin.
+
+## Decision
+
+**One readiness projection owns both Models and onboarding facts.** `ui-models` keeps a single store that joins `llm.providers({})`, redacted `settings.describe({})`, and batched `credentials.describe({refs})`. The onboarding projection selects the `deepseek-official` configurable-provider entry owned by the `llm-deepseek` namespace and empty settings path, reads the effective `apiKeyEnv`, and evaluates the matching credential descriptor. A live route with the same provider id but no matching configurable-provider declaration is adapter-absent for onboarding. A configured literal `apiKey` secret sidecar is also ready, so compatibility configuration does not trigger a false prompt; a configured process-environment credential is ready and remains read-only.
+
+**The settings shell contributes navigation state, not provider policy.** `ui-settings` declares a root-scoped `settings.onboarding` list slot and tells registrants whether the current surface is the empty Hero. Its private `openSection(id)` callback opens the settings panel on one registered section. `ui-models` registers the DeepSeek overlay through the same declaration-aware deferred-registration path as its Models section, so plugin load order does not become a contract.
+
+**The prompt routes to the one credential editor.** A mounted, active adapter with a resolved, writable, unconfigured reference presents one action that opens Settings on Models. The existing DeepSeek setup card there exclusively owns the password input, `credentials.set({ref, value})`, write failures, and post-write refresh; the onboarding overlay never holds or submits a secret.
+
+**Unavailable states do not capture the product.** An absent configurable-provider entry, inactive route, failed initial join, read-only deployment, or unresolved settings or credential capability suppresses the modal because the onboarding action cannot repair that state. The Models page remains the deployment diagnostic and retry surface. Configure later dismisses a missing-credential overlay for the current mounted surface and writes no completion fact. Settings, credential, provider-topology, and connection invalidations all refresh the shared join, so an external credential update closes an open prompt without a reload.
+
+## Alternatives considered
+
+**A separate onboarding store and readiness RPC sequence** — rejected because it would create a second client-side interpretation of provider identity, settings paths, secret sidecars, credential references, and invalidation ordering beside the Models page.
+
+**A second API-key editor inside onboarding** — rejected because the Models page already renders its DeepSeek setup card for exactly this state. Duplicating its secret draft, write errors, and configured-state convergence would add a second security-sensitive UI without another user capability.
+
+**Writing the API key into provider settings** — rejected because a literal secret would enter the settings mutation path and whole-section replacement cannot safely reconstruct redacted values. Credential storage is already the product seam and supplies immediate invalidation.
+
+**Showing the prompt when `llm-deepseek` is absent** — rejected because browser navigation has no supported operation that mounts the missing Cordis plugin.
+
+## Consequences
+
+The first-run flow leads to the shipped adapter's existing editor without restarting: a keyless browser test boots the real Web composition under an isolated harness home, follows the prompt to Models, stores a generated key through that page into the home's `.env`, verifies no key reaches DOM, ARIA, or browser console output, and confirms the running page reports configured. The full keyless Web replay lane also pins that a non-configurable replay route with the same provider id does not block unrelated journeys. Pure readiness and React tests pin literal, file, process-environment, missing-provider, missing-capability, navigation, cancellation, and external-invalidation behavior. The flow deliberately inherits the configuration plane's documented base limitations rather than adding local secret storage, redaction, or settings replacement workarounds.
diff --git a/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.zh.md b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.zh.md
new file mode 100644
index 0000000000..744c30814f
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.zh.md
@@ -0,0 +1,33 @@
+# Agent Note: DeepSeek 官方首次使用凭据配置
+
+Status: implemented
+
+[English](2026-07-30-deepseek-onboarding-credential-setup.md) | 中文
+
+## 问题
+
+[web 配置平面](../architecture/2026-07-30-web-config-plane.md)让提供方设置与凭据可以实时编辑，但首次使用的用户仍会进入空白对话 Hero；当随产品提供的 `deepseek-official` 路由缺少凭据时，界面没有给出可采取操作的说明。Models 页能修复该状态，但要求用户自行发现这个入口会削弱首次使用引导。界面不得混淆凭据缺失与适配器缺失：浏览器可以为现有凭据引用存入值，但无法动态挂载 `llm-deepseek` Cordis 插件。
+
+## 决策
+
+**Models 与首次使用引导共享同一个就绪状态投影。**`ui-models` 维护一个 store，把 `llm.providers({})`、脱敏后的 `settings.describe({})` 和批量调用的 `credentials.describe({refs})` 联接为同一份状态。首次使用投影选取由 `llm-deepseek` namespace 所有、设置路径为空的 `deepseek-official` 可配置提供方条目，读取生效的 `apiKeyEnv`，并检查对应的凭据描述符。同一提供方 ID 下的存活路由若没有匹配的可配置提供方声明，首次使用引导会将其视为适配器缺失。若 `apiKey` 字面量对应的 secret 槽位标记为已设置，也会判定为就绪，兼容配置因此不会误触发浮层；通过进程环境提供的凭据若已配置，同样判定为就绪并保持只读。
+
+**设置外壳只贡献导航状态，不持有提供方策略。**`ui-settings` 声明一个根作用域的 `settings.onboarding` list slot，并告知注册方当前界面是否为空白 Hero。其私有 `openSection(id)` 回调会打开设置面板并切换到一个已注册分区。`ui-models` 沿用 Models 分区所使用、感知 slot 声明的延迟注册路径来注册 DeepSeek 浮层，因此插件加载顺序不会成为契约。
+
+**浮层只负责跳转到唯一的凭据编辑器。**适配器已挂载且处于活跃状态，其引用可解析、可写但尚未配置时，界面会显示一个操作按钮，用于打开「设置」的 Models 分区。该分区已有的 DeepSeek 设置卡片全权负责密码输入框、`credentials.set({ref, value})`、写入失败处理和写入后刷新；首次使用浮层绝不持有或提交 secret。
+
+**不可用状态不会拦截产品交互。**可配置提供方条目缺失、路由未激活、初始联接失败、部署只读、设置能力无法解析或凭据能力无法解析时均不显示模态框，因为首次使用引导的操作无法修复这些状态。Models 页仍是部署诊断与重试界面。「稍后配置」只会在当前已挂载界面中关闭凭据缺失浮层，不写入任何完成状态。设置、凭据、提供方拓扑和连接失效事件都会刷新共享联接，因此外部凭据更新无需重新加载页面即可关闭已打开的浮层。
+
+## 曾考虑的替代方案
+
+**为首次使用引导单设 store 与就绪状态 RPC 调用序列**：不予采用，因为这会在 Models 页之外，再建立一套客户端解释，用于判定提供方身份、设置路径、secret 槽位的伴随信息、凭据引用及失效事件顺序。
+
+**在首次使用引导中增设第二个 API key 编辑器**：不予采用，因为 Models 页已为这一状态渲染 DeepSeek 设置卡片。复制其中的 secret 草稿、写入错误处理和已配置状态收敛会增加第二个安全敏感的 UI，却不会带来新的用户能力。
+
+**把 API key 写入提供方设置**：不予采用，因为字面量 secret 会进入设置变更路径，而整个分节替换无法安全重建脱敏值。凭据存储已经是产品 seam，并能立即发出失效事件。
+
+**`llm-deepseek` 缺失时仍显示浮层**：不予采用，因为浏览器导航没有任何受支持的操作可以挂载缺失的 Cordis 插件。
+
+## 后果
+
+首次使用流程无需重启即可引导用户前往随产品提供的适配器已有的编辑器：无密钥浏览器测试在隔离的 harness 家目录下启动真实 Web 组合，依照浮层操作前往 Models，通过该页面把生成的密钥存入该目录的 `.env`，验证密钥未进入 DOM、ARIA 或浏览器控制台输出，并确认运行中的页面报告已配置。完整的无密钥 Web 回放链路还固化了同一提供方 ID 下的不可配置回放路由不会阻塞无关流程。纯就绪状态测试与 React 测试固化了字面量凭据、文件凭据、进程环境凭据、提供方缺失、能力缺失、导航、取消和外部失效行为。该流程直接继承配置平面已记录的基础限制，不会另加局部的机密存储、脱敏或设置替换变通方案。
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-result-card.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-web-result-card.i18n.yaml
new file mode 100644
index 0000000000..3b30da4b96
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-result-card.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-web-result-card.md
+2026-07-30-web-result-card.md: deec27832aba2d5d868889f7306cbaef4f0b90b4
+2026-07-30-web-result-card.zh.md: 037e029332fbb665d90860d7e11c2fd117e6eb45
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-result-card.md b/.agents/notes/implemented/feature/2026-07-30-web-result-card.md
new file mode 100644
index 0000000000..deec27832a
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-result-card.md
@@ -0,0 +1,44 @@
+# Agent Note: Web result card — a structured render intent for web_search and web_fetch
+
+Status: implemented
+
+English | [中文](2026-07-30-web-result-card.zh.md)
+
+## Problem
+
+The `web_search` and `web_fetch` tools each declared a generic pending card (`presentCall`, `kind: 'search'`/`'fetch'`) but no `presentResult`, so a completed web call reached a UI only as the model-facing render text. For a web frontend that wants to render a citation list or a fetch summary, that text is lossy: `web_search`'s render collapses each source's `title`, `snippet`, and `publishedAt` into one free-text markdown line labelled by title OR hostname (`formatSearchOutput` in `packages/web/tool-web/src/search.ts`), so reparsing the render cannot recover the per-source fields; and `web_fetch`'s render carries `url` and `statusCode` only in a header line. The render-intent contract ([tagged union](../architecture/2026-07-02-tool-render-intent-union.md)) had no arm a web tool could declare to carry a structured result.
+
+## Decision
+
+Add one `card: 'web'` result arm to `ToolResultView` (`packages/core/tools/src/presentation.ts`), a union `WebResultView = WebSearchResultView | WebFetchResultView` discriminated by a `kind: 'search' | 'fetch'` field, plus a `WebSource` shape for one citeable source. Both tools now declare `presentResult`.
+
+One tag with a `kind` discriminant, not two tags. Both calls are web retrieval and a web frontend renders them with one component family (a retrieval card whose body differs by kind), so a shared `card` keeps every card consumer's switch to one added arm and lets the frontend branch on `kind` inside it. Two tags would force every present and future consumer to add two arms for what is one visual family. The `kind` values match the two tools' existing generic call-view `kind`s, so a call and its result read as the same category.
+
+`presentationMeta` carries what render text cannot. The structured result object a tool returns from `execute` does NOT reach a client over the wire — only the model-facing `render` text and, when declared, the `output.presentationMeta` JSON projected onto the `tool/result` event's `meta` do. For `web_search` the meta is the ONLY faithful route to `{url, title?, snippet?, publishedAt?}`: the render collapses those fields into one lossy free-text line, so a consumer cannot reparse them. For `web_fetch` the meta is a smaller but real gain: `url`/`statusCode` are recoverable from the deterministic `Fetched <url> (HTTP <n>)` header line, but `truncated` is the effective truncation — provider cap, pre-conversion source cut, or the deployment's `fetchMaxOutputChars` output cap — which a client cannot recompute because it does not know that cap. The fetch card and the model-facing text derive `truncated` from one shared `renderFetchOutput(result, maxOutputChars)` helper, so the card never disagrees with the footer the model saw. This mirrors the write/edit diff template (`packages/fs/tool-fs/src/diff.ts`): a `*MetaFromValue` projector feeds `output.presentationMeta`, and a `*MetaFromResult` narrower reads `result.meta` back with a defensive fallback to the generic card. `web_fetch`'s body is already markdown in the result content, so it is not duplicated into meta.
+
+Neither result view carries a `content` copy. A UI that does not render the structured `web` card falls back to the raw `tool/result` content. The TUI does exactly this: it renders no structured web body, and its transcript renderer routes a `web` view's fallback content through the same dim Markdown path as a generic card's content (`packages/ui/tui/src/components/transcript.ts`, where both `render` and `renderBody` narrow the `generic` arm to `view.content` and give a `web` view the same `this.result?.content` fallback). Copying the result content into the view would duplicate up to `fetchMaxOutputChars` characters on the same delivered frame for no gain (the same rejection the meta section applies to the fetch body), so the views omit it and the fallback path renders the identical text. Each view sets its result-state `title` from the call args (`args.query` / `args.url`) so a window-truncated replay that dropped the call head still has a title, the way write/edit reset title at result time.
+
+`presentResult` returns `undefined` (the generic card) on an error result and on absent or malformed `meta`, because presentation runs on replay of arbitrary logged results (possibly from an older schema) and must never throw. The narrowers validate every field defensively; an empty source list is valid meta, not malformed.
+
+## Consequences
+
+The web frontend consumer is a separate later PR: this PR adds the contract arm and makes the two tools emit it, with no client-side rendering. The one observable change is that the `web_search`/`web_fetch` `tool/result` events now persist a `data.meta` payload (the `web-fetch` keyless snapshot is refreshed accordingly); the model-facing render text and the TUI presentation are unchanged (the TUI falls back to the same result content). The assembled-application transcript snapshot that exercises a `web` card belongs to the consumer PR that renders it, delivered there. Any existing `ToolResultView` consumer that switches exhaustively must add a `web` arm; the TUI does not switch exhaustively and needs none. `apiproxy`'s session schema already accepts any `card` string (`packages/host/apiproxy/src/api/sessions.schema.ts`), so the new view crosses the wire without a schema change.
+
+A future web tool that wants this card declares `presentResult` returning a `card: 'web'` view with its own `kind`; adding a third `kind` is a union edit plus the frontend's branch, not a new card tag.
+
+## Alternatives considered
+
+**Two card tags (`web-search`, `web-fetch`).** Rejected: it doubles the arm count at every card consumer for one visual family, and the two shapes already share enough (a titled retrieval card with fallback content) that a `kind` discriminant expresses the difference without a second tag.
+
+**Reparse the render text in `presentResult` instead of projecting meta.** Rejected for `web_search`: the render's source list is lossy (title-or-hostname label, snippet and date concatenated into free text), so reparsing cannot faithfully recover the structured fields. `presentationMeta` is the only route that preserves them.
+
+**Carry the fetch body in meta, or copy the result content into either view.** Rejected: the body is already the model-facing markdown in the result content, and duplicating it into meta or into a view `content` field would double the persisted or delivered payload for no gain; a UI without the `web` capability falls back to the existing result content, which is the same text.
+
+## Testing
+
+`packages/web/tool-web/tests/tool-web.spec.ts` covers, per-file to the 100% gate: `searchMetaFromValue`/`fetchMetaFromValue` projection including omission of absent optional fields, and the fetch `truncated` projection agreeing with the render footer both when only the output cap cut the body and when nothing did; `searchMetaFromResult`/`fetchMetaFromResult` narrowing with a round-trip and every malformed-shape rejection (non-object, wrong field types, a malformed source entry) plus the empty-source-list accept; `presentSearchResult`/`presentFetchResult` typed views including the args-derived title, the absence of a `content` copy, the truncated signal, the error-result fallback, and the malformed-meta fallback; and two real-registry executions asserting the tool projects the meta onto `result.meta` and its registered `presentResult` derives the `card: 'web'` view.
+
+## Related
+
+- [Tagged render-intent union for tool-call presentation](../architecture/2026-07-02-tool-render-intent-union.md) — the `card`-tagged vocabulary this extends with the `web` arm.
+- [Web terminal card](2026-07-28-web-terminal-card.md) — the precedent that carried the bash `terminal` render intent to the browser; the web frontend consumer of this arm is its analogue, deferred to a later PR.
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-result-card.zh.md b/.agents/notes/implemented/feature/2026-07-30-web-result-card.zh.md
new file mode 100644
index 0000000000..037e029332
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-result-card.zh.md
@@ -0,0 +1,44 @@
+# Agent Note: Web result card — a structured render intent for web_search and web_fetch
+
+Status: implemented
+
+[English](2026-07-30-web-result-card.md) | 中文
+
+## Problem
+
+`web_search` 与 `web_fetch` 工具各自声明了一个 generic 待定卡片（`presentCall`，`kind: 'search'`/`'fetch'`），但没有 `presentResult`，因此一个已完成的 web 调用抵达 UI 时只剩下面向模型的 render 文本。对于想渲染引用列表或抓取摘要的 web 前端而言，该文本是有损的：`web_search` 的 render 把每个来源的 `title`、`snippet`、`publishedAt` 压进一行以 title 或 hostname 标注的自由文本 markdown（`packages/web/tool-web/src/search.ts` 中的 `formatSearchOutput`），因此重新解析 render 无法恢复各来源字段；`web_fetch` 的 render 也仅在一行 header 里携带 `url` 与 `statusCode`。渲染意图契约（[标签联合类型](../architecture/2026-07-02-tool-render-intent-union.md)）此前没有一个可供 web 工具声明、用以携带结构化结果的分支。
+
+## Decision
+
+向 `ToolResultView`（`packages/core/tools/src/presentation.ts`）新增一个 `card: 'web'` 结果分支，它是以 `kind: 'search' | 'fetch'` 字段作判别的联合 `WebResultView = WebSearchResultView | WebFetchResultView`，并附一个表示单个可引用来源的 `WebSource` 形状。两个工具现在都声明 `presentResult`。
+
+采用一个标签加 `kind` 判别，而非两个标签。两个调用都是 web 检索，web 前端会用同一族组件渲染它们（一个检索卡片，正文按 kind 不同），因此共用一个 `card` 让每个 card 消费者的 switch 只需新增一个分支，并让前端在其内部按 `kind` 分岔。两个标签会迫使当前及未来每个消费者为本属同一视觉族的东西添加两个分支。这两个 `kind` 取值与两个工具既有的 generic 调用视图 `kind` 一致，因此一个调用与它的结果读起来是同一类别。
+
+`presentationMeta` 携带 render 文本无法携带的东西。工具从 `execute` 返回的结构化结果对象**不会**经由 wire 抵达客户端——只有面向模型的 `render` 文本，以及（声明时）投影到 `tool/result` 事件 `meta` 上的 `output.presentationMeta` JSON 会。对 `web_search`，meta 是得到 `{url, title?, snippet?, publishedAt?}` 的**唯一**忠实途径：render 把这些字段压进一行有损的自由文本，消费者无法重新解析。对 `web_fetch`，meta 是更小但真实的收益：`url`/`statusCode` 可从确定格式的 `Fetched <url> (HTTP <n>)` header 行还原，但 `truncated` 是有效截断——provider cap、转换前源截断，或部署的 `fetchMaxOutputChars` 输出上限——客户端无法重算，因为它不知道那个上限。抓取卡片与面向模型的文本都从同一个 `renderFetchOutput(result, maxOutputChars)` helper 派生 `truncated`，因此卡片绝不会与模型看到的脚注分叉。这照搬 write/edit 的 diff 模板（`packages/fs/tool-fs/src/diff.ts`）：一个 `*MetaFromValue` 投影器喂给 `output.presentationMeta`，一个 `*MetaFromResult` 收窄器读回 `result.meta`，并在失败时防御性回退到 generic 卡片。`web_fetch` 的正文已是结果内容中的 markdown，因此不重复写入 meta。
+
+两个结果视图都不携带 `content` 副本。不渲染结构化 `web` 卡片的 UI 回退到原始 `tool/result` 内容。TUI 正是如此：它不渲染结构化的 web 正文，其 transcript 渲染器把 `web` 视图的回退内容与 generic 卡片的内容路由进同一条 dim Markdown 路径（`packages/ui/tui/src/components/transcript.ts` 中 `render` 与 `renderBody` 都把 `generic` 分支收窄为 `view.content`，并给 `web` 视图相同的 `this.result?.content` 回退）。把结果内容复制进视图会在同一投递帧上重复最多 `fetchMaxOutputChars` 个字符却毫无收益（与 meta 一节对抓取正文的否决同理），因此视图省略它，回退路径渲染完全相同的文本。每个视图从调用参数设置其结果期 `title`（`args.query`／`args.url`），因此丢掉了调用头的窗口截断重放仍有标题，与 write/edit 在结果期重设 title 的做法一致。
+
+`presentResult` 在错误结果、以及 `meta` 缺失或畸形时返回 `undefined`（即 generic 卡片），因为 presentation 会在对任意已记录结果（可能来自旧 schema）的重放中运行，绝不能抛错。收窄器防御性地校验每个字段；空来源列表是有效 meta，而非畸形。
+
+## Consequences
+
+web 前端消费者是一个独立的后续 PR：本 PR 新增契约分支并让两个工具发出它，不含客户端渲染。唯一可观察的变化是 `web_search`/`web_fetch` 的 `tool/result` 事件现在持久化一个 `data.meta` 载荷（`web-fetch` keyless 快照随之刷新）；面向模型的 render 文本与 TUI 呈现不变（TUI 回退到相同的结果内容）。渲染 `web` 卡片的组装应用 transcript 快照属于渲染它的消费者 PR，在那里交付。任何做穷尽 switch 的现有 `ToolResultView` 消费者都必须新增一个 `web` 分支；TUI 并不穷尽 switch，无需新增。`apiproxy` 的会话 schema 已接受任意 `card` 字符串（`packages/host/apiproxy/src/api/sessions.schema.ts`），因此新视图无需 schema 变更即可跨 wire。
+
+未来想用此卡片的 web 工具，声明一个返回带自有 `kind` 的 `card: 'web'` 视图的 `presentResult`；新增第三个 `kind` 是一次联合类型编辑加前端的分岔，而非一个新的 card 标签。
+
+## Alternatives considered
+
+**两个 card 标签（`web-search`、`web-fetch`）。** 否决：它在每个 card 消费者处为一个视觉族翻倍分支数，而两个形状已共享得够多（一个带回退内容的带标题检索卡片），`kind` 判别无需第二个标签即可表达差异。
+
+**在 `presentResult` 里重新解析 render 文本，而非投影 meta。** 对 `web_search` 否决：render 的来源列表是有损的（title 或 hostname 标签，snippet 与日期拼进自由文本），因此重新解析无法忠实恢复结构化字段。`presentationMeta` 是唯一保留它们的途径。
+
+**把抓取正文放进 meta，或把结果内容复制进任一视图。** 否决：正文已是结果内容中面向模型的 markdown，把它复制进 meta 或视图的 `content` 字段会为无收益的目的翻倍持久化或投递载荷；不具备 `web` 能力的 UI 回退到既有的结果内容，那是相同的文本。
+
+## Testing
+
+`packages/web/tool-web/tests/tool-web.spec.ts` 覆盖以下内容，满足按文件 100% 的门禁：`searchMetaFromValue`/`fetchMetaFromValue` 投影，含对缺席可选字段的省略，以及抓取 `truncated` 投影在仅输出上限截断正文时、以及在毫无截断时都与 render 脚注一致；`searchMetaFromResult`/`fetchMetaFromResult` 收窄，含一次往返与每种畸形形状的拒绝（非对象、字段类型错误、畸形来源条目）以及空来源列表的接受；`presentSearchResult`/`presentFetchResult` 类型化视图，含从参数派生的 title、无 `content` 副本、truncated 信号、错误结果回退与畸形 meta 回退；以及两次真实注册表执行，断言工具把 meta 投影到 `result.meta` 上，其注册的 `presentResult` 推导出 `card: 'web'` 视图。
+
+## Related
+
+- [标签化的工具调用渲染意图联合类型](../architecture/2026-07-02-tool-render-intent-union.md) —— 本卡片以 `web` 分支扩展的 `card` 标签词汇表。
+- [Web terminal card](2026-07-28-web-terminal-card.md) —— 把 bash `terminal` 渲染意图带到浏览器的先例；本分支的 web 前端消费者是它的对应物，推迟到后续 PR。
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.i18n.yaml b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.i18n.yaml
new file mode 100644
index 0000000000..97793a906a
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md
+2026-07-31-web-telemetry-default-mount.md: 6c1fdaa8719ee01726b51db9a469ff659cbac476
+2026-07-31-web-telemetry-default-mount.zh.md: b447832527ba9731097cd0776060db11ee4dfc30
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md
new file mode 100644
index 0000000000..6c1fdaa871
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md
@@ -0,0 +1,39 @@
+# Agent Note: Default session-telemetry mount (OTel reporting) in the dsh web composition
+
+Status: implemented
+
+English | [中文](2026-07-31-web-telemetry-default-mount.zh.md)
+
+## Problem
+
+The telemetry seam and OTel backend ([revival Note](2026-07-23-session-telemetry-otel-revival.md)) had never been wired into any deployment composition since completion: no roster row, no switch, no cadence ruling, and zero observability over user sessions for the internal deployment. A deployment decision was needed: which surfaces report, to where, on what cadence, how to opt out, and how CI stays isolated.
+
+## Decision
+
+The shared `dsh` core (`apps/cli/config/base.cordis.yml`) mounts the `telemetry-otel` row by default with a baked-in production endpoint, so every surface — TUI, web, and headless — reports; this is the **internal-testing deployment stance** — reporting is on when an endpoint exists, and users opt out through the environment. Each surface's exit path drains the queue: web/headless dispose on SIGINT/SIGTERM (headless gained those handlers in this change), and the TUI's normal exit runs `disposeRootAndExit` (root dispose, 5s bounded — above the ~1s drain ceiling configured here) while its `/resume` handoff disposes the root before `execve`.
+
+| Ruling | Value | Rationale |
+|---|---|---|
+| Mount surface | base.cordis.yml (TUI + web + headless) | One deployment stance for every surface; per-surface divergence would need a reason, and none exists |
+| Endpoint | `DSH_TELEMETRY_OTLP_URL`, default `https://harness-telemetry.deepseeksvc.com/v1/logs` | Internal collector; the env override serves local/dev runs |
+| Opt-out switch | any non-empty `DSH_TELEMETRY_DISABLED` (including `0`/`false`) disables | A privacy switch prefers off-by-mistake over on-by-mistake; a row can only be disabled at AppCLIEntry's patch layer (config has no disable semantic, and the switch must precede the load-time `exporter.url` validation) |
+| Cadence | `processor.scheduledDelayMillis: 10000` (10s/batch) | Streaming while the session runs, never exit-time-only; a crash loses at most the last unexported interval |
+| Exit-drain bound | `exporter.timeoutMillis: 1000` + `maxExportBatchSize: 2048` (== maxQueueSize) + `exportTimeoutMillis: 1500` | Dispose must release within ~1s against an unreachable collector: timeoutMillis doubles as the per-attempt socket timeout and the retry deadline (1s effectively disables the SDK's 5-try backoff), and aligning batch size with the queue cap makes the drain a single batch; SDK defaults can stall 40s+ |
+| Compression | `compression: gzip` | Event bodies carry full content; cross-datacenter bandwidth |
+| CI isolation | top-level `env: DSH_TELEMETRY_DISABLED: '1'` in all 8 GitHub workflows | Every CI channel that boots the web composition (e2e/snapshot/built smokes) must not stream test sessions to the production endpoint |
+
+The keyless integration test `apps/cli/tests/telemetry-web.e2e.ts` pins the deployment-level behavior: an in-test OTLP collector plus a mock LLM server, a real `dsh web` boot, asserting ledger coverage, seq monotonicity, the first-of-step chunk projection, and the ops `shutdown` marker arriving through the SIGINT drain.
+
+## Alternatives considered
+
+**No default mount; deployments add the row themselves (continuing the SDK stance).** Rejected for this stage: this repo's web/headless composition IS the internal deployment, and default-on reporting is that deployment's product requirement; the SDK stance survives in the seam packages (unmounted = nothing leaves).
+
+**A config field instead of an env patch for the switch.** Infeasible: cordis rows have no config-level disable semantic, and `exporter.url` validation fails loud at plugin construction, so the switch must take effect before the Loader — AppCLIEntry's patch layer is the only seat.
+
+**A `Promise.race` timeout backstop around exit.** Deferred: the parameter set already bounds the worst-case drain to ~1.5-3s (typically <100ms), measured SIGINT-to-exit 110ms-1.1s; the unbounded drip-feed-response risk stays under observation, and on real evidence the race lands inside the backend's `shutdown()` (never the coordinator — that would decide loss semantics for every backend).
+
+## Consequences
+
+- A developer running `dsh web` without a local collector POSTs to the production endpoint every 10s (silent failure when unreachable; no OTel diag logger is registered); local development sets `DSH_TELEMETRY_DISABLED=1` or points `DSH_TELEMETRY_OTLP_URL` locally.
+- **No redaction rule is mounted yet**: exports are the raw captured copy (full user/assistant message text, tool arguments and results, the system prompt, the local `session.cwd` path). Crossing a trust boundary requires `telemetry/record` rules first — the redaction rule, identity Resource attributes (hostname / anonymous user id / surface), and the usage-metrics track are the explicit follow-ups of this decision.
+- Test rigs reusing this tree (e.g. `apps/web/tests/scaffold.ts`) must explicitly disable the row, or fixture sessions stream to whatever collector the environment happens to name.
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.zh.md b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.zh.md
new file mode 100644
index 0000000000..b447832527
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.zh.md
@@ -0,0 +1,39 @@
+# Agent Note: dsh web 组合默认挂载会话遥测（OTel 上报）
+
+Status: implemented
+
+[English](2026-07-31-web-telemetry-default-mount.md) | 中文
+
+## Problem
+
+遥测 seam 与 OTel backend（[revival Note](2026-07-23-session-telemetry-otel-revival.md)）自完成以来从未接入任何部署组合：没有 roster 行、没有开关、没有节奏口径，内部部署对用户会话零可观测。需要一个部署决策：哪些 surface 上报、报到哪、什么节奏、怎么关、CI 怎么隔离。
+
+## Decision
+
+`dsh` 共享核心（`apps/cli/config/base.cordis.yml`）默认挂载 `telemetry-otel` 行，内置生产 endpoint，因此所有 surface——TUI、web、headless——都上报；这是**内部测试期的部署立场**——有 endpoint 就报，用户可经环境变量退出。各 surface 的退出路径都会排空队列：web/headless 在 SIGINT/SIGTERM 上 dispose（headless 的信号处理是本次补上的），TUI 的正常退出走 `disposeRootAndExit`（根 dispose，5s 兜底——高于此处配置的 ~1s drain 上界），其 `/resume` 移交也在 `execve` 前 dispose 根。
+
+| 决策项 | 取值 | 理由 |
+|---|---|---|
+| 挂载面 | base.cordis.yml（TUI + web + headless） | 所有 surface 一个部署立场；按 surface 分化需要理由，而当前没有 |
+| endpoint | `DSH_TELEMETRY_OTLP_URL`，缺省 `https://harness-telemetry.deepseeksvc.com/v1/logs` | 内部 collector；env 覆盖供本地/联调 |
+| 退出开关 | `DSH_TELEMETRY_DISABLED` 非空（含 `0`/`false`）即关 | 隐私向开关取「宁关勿误开」；行级 disable 只能在 AppCLIEntry 的 patch 层做（config 无 disable 语义，且必须先于 `exporter.url` 的加载期校验生效） |
+| 上报节奏 | `processor.scheduledDelayMillis: 10000`（10s/批） | 流式回流，非退出才报；崩溃至多丢最后一个未导出间隔 |
+| 退出 drain 上界 | `exporter.timeoutMillis: 1000` + `maxExportBatchSize: 2048（== maxQueueSize）` + `exportTimeoutMillis: 1500` | collector 不可达时 dispose 必须 ~1s 内放行：timeoutMillis 同时是单次 socket 超时与重试 deadline（1s 等效关掉 SDK 5 次 backoff），批大小对齐队列上限使 drain 恒为单批；默认参数下最坏可卡 40s+ |
+| 压缩 | `compression: gzip` | 事件 body 含全文，跨机房带宽 |
+| CI 隔离 | 全部 8 个 GitHub workflow 顶层 `env: DSH_TELEMETRY_DISABLED: '1'` | CI 启动 web 组合的所有通道（e2e/snapshot/built smoke）不得向生产 endpoint 泄测试会话 |
+
+集成测试 `apps/cli/tests/telemetry-web.e2e.ts`（keyless）钉住部署级行为：测试内 OTLP collector + mock LLM，真启动 `dsh web`，断言 ledger 覆盖、seq 单调、chunk 首条投影、以及 SIGINT drain 后 ops `shutdown` 标记到达。
+
+## Alternatives considered
+
+**默认不挂载，部署方自行加行（SDK 立场的延续）。** 否决于当前阶段：本仓的 web/headless 组合就是内部部署本身，「上报默认开」是这个部署的产品要求；SDK 立场仍由 seam 包保持（不挂 = 零外发）。
+
+**开关做成 config 字段而非 env patch。** 不可行：cordis 行没有 config 层的 disable 语义，且 `exporter.url` 校验在插件构造期 fail-loud，开关必须在 Loader 之前生效——AppCLIEntry patch 层是唯一落点。
+
+**退出时 `Promise.race` 兜底超时。** 暂缓：参数组合已把最坏 drain 压到 ~1.5-3s（典型 <100ms），实测 SIGINT→退出 110ms-1.1s；drip-feed 慢滴响应的无界等待风险留观，出现实证再在 backend `shutdown()` 内加 race（不放 coordinator——那会替所有 backend 决定丢失语义）。
+
+## Consequences
+
+- 无本地 collector 的开发者跑 `dsh web` 会对生产 endpoint 每 10s 发一次 POST（联不通则静默失败，OTel diag logger 未注册）；本地开发设 `DSH_TELEMETRY_DISABLED=1` 或 `DSH_TELEMETRY_OTLP_URL` 指本地。
+- **当前零脱敏规则挂载**：导出即原始捕获副本（用户/助手消息全文、工具参数与结果、system prompt、`session.cwd` 本地路径）。跨信任边界前必须挂 `telemetry/record` 规则——脱敏规则、身份 Resource 维度（hostname/匿名 user id/surface）、使用数据 metrics 轨三件是本决策明确的后续工作。
+- 复用这棵树的测试载具（如 `apps/web/tests/scaffold.ts`）须显式关停该行，否则 fixture 会话会流向 env 里碰巧存在的 collector。
diff --git a/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.i18n.yaml b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.i18n.yaml
new file mode 100644
index 0000000000..76604171be
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.md
+2026-07-30-sidebar-resize-without-visible-pill.md: cc41898990fa23ff2937140186a8324217911d2e
+2026-07-30-sidebar-resize-without-visible-pill.zh.md: 9f1f521df2848b15f5015719bfa6f0e0e9b7be0c
diff --git a/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.md b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.md
new file mode 100644
index 0000000000..cc41898990
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.md
@@ -0,0 +1,25 @@
+# Agent Note: Sidebar resize without a visible pill
+
+Status: implemented
+
+English | [中文](2026-07-30-sidebar-resize-without-visible-pill.zh.md)
+
+## Problem
+
+The AppFrame exposed identical floating pills on both column borders. The left pill added unnecessary visual weight beside primary navigation, but the sidebar's resize interaction remains useful.
+
+## Decision
+
+AppFrame keeps the sidebar's 8px resize hit strip, `col-resize` cursor, pointer capture, animation-frame throttling, and width updates, but does not generate the sidebar handle's pill pseudo-element. The details boundary retains both its hit strip and floating pill.
+
+The layout component test continues to pin sidebar dragging and both handles' collapse lifecycle. A keyless browser scenario reads the generated pseudo-elements from the shipped composition and drags the invisible sidebar boundary to prove the interaction remains live.
+
+## Alternatives considered
+
+**Remove the sidebar drag interaction with the pill.** Rejected because the requested change is visual; removing a working geometry control would unnecessarily narrow the interaction.
+
+**Keep the pill but reduce its emphasis.** A smaller or lower-contrast pill still leaves an unwanted object on the sidebar boundary.
+
+## Consequences
+
+The sidebar boundary is visually quiet while pointer resizing remains available from the boundary and retains the resize cursor. Unlike the details control, that interaction has no visible pill.
diff --git a/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.zh.md b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.zh.md
new file mode 100644
index 0000000000..9f1f521df2
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-30-sidebar-resize-without-visible-pill.zh.md
@@ -0,0 +1,25 @@
+# Agent Note: 侧边栏缩放不显示胶囊
+
+Status: implemented
+
+[English](2026-07-30-sidebar-resize-without-visible-pill.md) | 中文
+
+## 问题
+
+AppFrame 在两个栏位边界都显示相同的浮动胶囊。左侧胶囊在主导航旁增加了不必要的视觉负担，但侧边栏的缩放交互仍有用。
+
+## 决策
+
+AppFrame 保留侧边栏宽 8px 的缩放命中条带、`col-resize` 光标、指针捕获、动画帧节流和宽度更新，但不再生成侧边栏手柄的胶囊形伪元素。详情栏边界同时保留命中条带和浮动胶囊。
+
+布局组件测试继续固定侧边栏拖动行为，以及两个手柄随面板折叠时的生命周期。一个无密钥浏览器场景读取实际交付组合所生成的伪元素，并拖动不可见的侧边栏边界，证明该交互仍然有效。
+
+## 曾考虑的替代方案
+
+**随胶囊一并移除侧边栏拖动交互。** 不予采纳，因为本次要求只改视觉表现；移除正常工作的几何控制会不必要地缩减交互方式。
+
+**保留胶囊，但降低其视觉强调。** 更小或对比度更低的胶囊仍会在侧边栏边界留下一个不需要的物体。
+
+## 后果
+
+侧边栏边界在视觉上保持简洁，同时仍可在边界处通过指针调整宽度，并保留缩放光标。与详情栏控件不同，该交互没有可见胶囊。
diff --git a/.github/workflows/build-exe-for-python-sdk.yml b/.github/workflows/build-exe-for-python-sdk.yml
index 5965707630..017b77ee75 100644
--- a/.github/workflows/build-exe-for-python-sdk.yml
+++ b/.github/workflows/build-exe-for-python-sdk.yml
@@ -28,6 +28,11 @@ concurrency:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 jobs:
   # Job-level conditions cannot inspect `matrix`, so validate target names and
   # construct the matrix before the dependent jobs.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f6ec52f0a..6b2a5dd9d5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,6 +24,9 @@ permissions:
 
 env:
   PRIMARY_NODE_VERSION: '24'
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
 
 jobs:
 
diff --git a/.github/workflows/docs-pages.yml b/.github/workflows/docs-pages.yml
index ab56636fed..6336089a41 100644
--- a/.github/workflows/docs-pages.yml
+++ b/.github/workflows/docs-pages.yml
@@ -23,6 +23,9 @@ permissions:
 
 env:
   PRIMARY_NODE_VERSION: '24'
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
 
 jobs:
   build:
diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index c445034a8c..d72e7bfee4 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -46,6 +46,11 @@ concurrency:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 jobs:
   e2e:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/expected-filenames.yml b/.github/workflows/expected-filenames.yml
index 328da95529..59320b9261 100644
--- a/.github/workflows/expected-filenames.yml
+++ b/.github/workflows/expected-filenames.yml
@@ -10,6 +10,11 @@ on:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 jobs:
   expected-filenames:
     name: no golden filenames
diff --git a/.github/workflows/landlock-run.yml b/.github/workflows/landlock-run.yml
index 8916f59a56..dad9638761 100644
--- a/.github/workflows/landlock-run.yml
+++ b/.github/workflows/landlock-run.yml
@@ -19,6 +19,11 @@ concurrency:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 defaults:
   run:
     working-directory: native/landlock-run
diff --git a/.github/workflows/pi-ai-provider-e2e.yml b/.github/workflows/pi-ai-provider-e2e.yml
index 1306754d4c..255c7654e7 100644
--- a/.github/workflows/pi-ai-provider-e2e.yml
+++ b/.github/workflows/pi-ai-provider-e2e.yml
@@ -19,6 +19,11 @@ on:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 jobs:
   e2e:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/sandbox.yml b/.github/workflows/sandbox.yml
index 36f58cc75b..939ca2f6ab 100644
--- a/.github/workflows/sandbox.yml
+++ b/.github/workflows/sandbox.yml
@@ -19,6 +19,11 @@ concurrency:
 permissions:
   contents: read
 
+env:
+  # CI runs must never report to the production telemetry endpoint baked
+  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
+  DSH_TELEMETRY_DISABLED: '1'
+
 jobs:
   # Keyless real-kernel sandbox proofs (sandbox Agent Note § Testing): each ladder
   # rung is only provable on a host where it enforces, so this job fans out
diff --git a/AGENTS.md b/AGENTS.md
index cce8df3137..9667432285 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -32,6 +32,7 @@ packages/    @deepseek-ai/dsh-<pkg> workspaces at packages/<group>/<pkg>/
   hooks/       Claude Code/Codex hook bridges + shared wire-protocol library
   session-persistence/  persistence seam + JSONL/SQLite backends
   settings/    user-settings seam + file-backed provider
+  credentials/ credential-reference seam + env-over-.env provider
   acp/         automation-only Agent Client Protocol server
   ui/          TUI/JSON-RPC bridges; boot, approval, interaction plugins
   examples/    demo bundles (agent-spine + TUI/CLI/ACP/JSON-RPC bins) leaves load
diff --git a/apps/cli/README.i18n.yaml b/apps/cli/README.i18n.yaml
index 7e4aacef29..26395105b7 100644
--- a/apps/cli/README.i18n.yaml
+++ b/apps/cli/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write apps/cli/README.md
-README.md: 2bc36cce6205a4bfc3ba1d7ee15f0e0b2feab215
-README.zh.md: 0e0771658cecb4bee0f3eadd0639ad531e64ea3c
+README.md: e56b726029c5bba9ba769c6dd3493d913f0129d7
+README.zh.md: 24ff9a6e8d48016d213e877e23768332d86cccde
diff --git a/apps/cli/README.md b/apps/cli/README.md
index 2bc36cce62..e56b726029 100644
--- a/apps/cli/README.md
+++ b/apps/cli/README.md
@@ -11,9 +11,9 @@ The TUI surface:
 - resumes a persisted session with `dsh --resume <session-id>` and, when the Node host exposes `process.execve`, supplies the TUI's in-place handoff host: after selector preflight and current-session flush, the host disposes the app and replaces the process with a normalized resume invocation; runtimes without process replacement leave the session running and say so. This CLI owns session identity and the exit line rather than the config: it mints or selects the `main` session id and provides it, plus the exact command that reproduces this invocation, on the boot context ([`MAIN_SESSION_ID_KEY`](../../packages/ui/tui/README.md) and `TUI_GOODBYE_MESSAGE_KEY`). No `cordis.yml` key can drop resume, and a missing or unreadable id fails loud instead of creating a fresh session;
 - treats the **invoking directory** as the workspace — sessions, relative paths, and workspace instructions resolve from the cwd (`dsh meta` is the sole exception, below);
 - tells the agent where its own source lives: after boot it adds a prompt section naming this harness checkout, resolved from the launcher's real path so it holds under a PATH symlink and an arbitrary cwd, so the self-referential `cordis` toolset can read and modify it;
-- applies the personal overlay from `~/.dsh` (see [app-boot's Personal config](../../packages/ui/app-boot/README.md#personal-config)): `.env` fills environment gaps (ambient > project `.env` > personal `.env`), `config.yaml` patches the booted tree.
+- applies the personal overlay from `~/.dsh` (see [app-boot's Personal config](../../packages/ui/app-boot/README.md#personal-config)): `config.yaml` patches the booted tree, while `.env` there is the credential provider's own store (never hoisted into the environment, so keys stay rotatable). Environment precedence is ambient > project `.env`.
 
-`dsh meta` is that same TUI with this harness checkout as the workspace, so working on dsh itself needs no `cd`. It chdirs to the checkout root — resolved from the launcher's real path, the same root the source-path prompt section names — after both `.env` layers are loaded, so environment precedence is unchanged while the session cwd and HMR watch root move together. Meta always starts a fresh session and accepts no default-surface options; use ordinary `dsh --resume <id>` to resume a persisted session.
+`dsh meta` is that same TUI with this harness checkout as the workspace, so working on dsh itself needs no `cd`. It chdirs to the checkout root — resolved from the launcher's real path, the same root the source-path prompt section names — after the environment is settled, so precedence is unchanged while the session cwd and HMR watch root move together. Meta always starts a fresh session and accepts no default-surface options; use ordinary `dsh --resume <id>` to resume a persisted session.
 
 `dsh upgrade` is a guided fresh-session entry over the default TUI surface: it mints a fresh session in the invoking directory and seeds its first turn with the bundled `dsh-upgrade` skill, exactly as if the user typed `/skill:<name>`. The launcher passes the skill name on the boot context ([`INITIAL_SKILL_KEY`](../../packages/ui/tui/README.md)), which the TUI auto-invokes once the chat is live. Both take no options — `--config`, `-p`, and `--resume` fail loud — and seed only on this first launch, so a later `dsh --resume <id>` of the session is an ordinary TUI session with no re-injection.
 
@@ -24,6 +24,8 @@ The shipped TUI and Web compositions register the native DeepSeek adapter plus p
 
 `DSH_TOOLS_MODE` selects the tool presentation mode for the whole Web/headless process: `native` (the schema default when unset), `code` (the `run_code`-only Code Mode wire), or `both`; any other value fails loud at boot through the `dsh-tools` config schema. It is a TEMPORARY seam — process-wide because Loader composition is static — and is removed once the web UI owns per-session tool-mode selection; the TUI surface ignores it (its config tree pins its own mode).
 
+Every `dsh` surface — TUI, Web, and headless — reports session telemetry by default (the row lives in the shared `base.cordis.yml`): every session-log event streams as OTLP/HTTP log records to `https://harness-telemetry.deepseeksvc.com/v1/logs` on a 10-second batch cadence. `DSH_TELEMETRY_OTLP_URL` points the exporter at a different collector; setting `DSH_TELEMETRY_DISABLED` to ANY non-empty value — including `0` or `false` — disables the row before it loads (a privacy switch prefers off-by-mistake over on-by-mistake). No redaction rule is mounted in this composition yet: exported records are the raw captured copy, including message text, tool arguments and results, and the session's working-directory path. The deployment rulings live in the [web-telemetry-default-mount Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md).
+
 ## Install (developer machine)
 
 Symlink the source-running launcher onto your PATH; it resolves the checkout through its own real path, so code changes apply on the next launch with no build step:
diff --git a/apps/cli/README.zh.md b/apps/cli/README.zh.md
index 0e0771658c..24ff9a6e8d 100644
--- a/apps/cli/README.zh.md
+++ b/apps/cli/README.zh.md
@@ -11,9 +11,9 @@ TUI 界面：
 - 使用 `dsh --resume <session-id>` 恢复已持久化会话。当 Node 宿主公开 `process.execve` 时，还会提供 TUI 的原地移交宿主：选择器预检并刷新当前会话后，宿主会释放应用，并以规范化的恢复调用替换进程；不支持进程替换的运行时会让会话继续运行并给出提示。会话身份与退出行由本 CLI 拥有，而非由配置指定：它创建或选定 `main` 会话 id，并把该 id 以及可复现本次调用的确切命令一起提供到启动上下文（[`MAIN_SESSION_ID_KEY`](../../packages/ui/tui/README.md) 与 `TUI_GOODBYE_MESSAGE_KEY`）。任何 `cordis.yml` 键都无法移除恢复能力；缺失或无法读取的 id 会明确报错，而不会创建新会话；
 - 将 **调用目录** 视为 workspace：会话、相对路径和 workspace 指令都从 cwd 解析（`dsh meta` 是唯一例外，见下文）；
 - 告知 agent 自身源码所在位置：启动后添加一个命名此 harness checkout 的提示词段。该路径从启动器的真实路径解析，因此在 PATH 符号链接和任意 cwd 下仍然有效，使自指的 `cordis` 工具集可以读取并修改它；
-- 应用 `~/.dsh` 中的个人覆盖（参见 [app-boot 的个人配置](../../packages/ui/app-boot/README.md#personal-config)）：`.env` 填补环境缺口（环境中已有的值 > 项目 `.env` > 个人 `.env`），`config.yaml` 则修补已启动的树。
+- 应用 `~/.dsh` 中的个人覆盖（参见 [app-boot 的个人配置](../../packages/ui/app-boot/README.md#personal-config)）：`config.yaml` 修补已启动的树，而那里的 `.env` 是凭据 provider 自己的存储（绝不会被提升进环境，因此密钥始终可轮换）。环境优先级为环境中已有的值 > 项目 `.env`。
 
-`dsh meta` 是以本 harness checkout 为 workspace 的同一个 TUI，因此开发 dsh 自身无需 `cd`。它在两层 `.env` 都加载之后才 chdir 到 checkout 根目录（从启动器的真实路径解析，与源码路径提示词段所指的根目录相同），因此环境优先级不变，而会话 cwd 与 HMR 监视根目录会一并移动。Meta 始终创建新会话，不接受默认界面的任何选项；恢复已持久化会话应使用普通的 `dsh --resume <id>`。
+`dsh meta` 是以本 harness checkout 为 workspace 的同一个 TUI，因此开发 dsh 自身无需 `cd`。它在环境确定之后才 chdir 到 checkout 根目录（从启动器的真实路径解析，与源码路径提示词段所指的根目录相同），因此环境优先级不变，而会话 cwd 与 HMR 监视根目录会一并移动。Meta 始终创建新会话，不接受默认界面的任何选项；恢复已持久化会话应使用普通的 `dsh --resume <id>`。
 
 `dsh upgrade` 是默认 TUI 界面之上的引导式全新会话入口：它在调用目录中创建一个全新会话，并以内置 `dsh-upgrade` skill 播种其首轮，效果等同于用户手动键入 `/skill:<name>`。启动器将 skill 名称提供到启动上下文（[`INITIAL_SKILL_KEY`](../../packages/ui/tui/README.md)），TUI 在聊天就绪后自动调用它。两者都不接受任何选项——`--config`、`-p`、`--resume` 都会明确报错——且仅在首次启动时播种，因此之后 `dsh --resume <id>` 恢复该会话时是普通 TUI 会话，不会重复注入。
 
@@ -24,6 +24,8 @@ Web 和无头界面启动 `base.cordis.yml` 与 `web.cordis.yml`，随后应用
 
 `DSH_TOOLS_MODE` 为整个 Web／无头进程选择工具呈现模式：可选值为 `native`（未设置时的 schema 默认值）、`code`（仅含 `run_code` 的 Code Mode 协议接口）或 `both`；任何其他值都会经由 `dsh-tools` 配置 schema 在启动时明确报错。它是一个临时 seam：Loader 组合是静态的，因此该设置作用于整个进程；待 Web UI 负责逐会话工具模式选择后便会移除。TUI 界面会忽略该变量（其配置树固定了自身模式）。
 
+每个 `dsh` 界面——TUI、Web 与无头——都默认上报会话遥测（该行位于共享的 `base.cordis.yml`）：每条会话日志事件以 OTLP/HTTP 日志记录的形式、按 10 秒批处理节奏流向 `https://harness-telemetry.deepseeksvc.com/v1/logs`。`DSH_TELEMETRY_OTLP_URL` 可将 exporter 指向其他 collector；将 `DSH_TELEMETRY_DISABLED` 设为**任意非空值**——包括 `0` 或 `false`——都会在该行加载前将其关停（隐私开关取「宁可误关、不可误开」）。该组合当前未挂载任何脱敏规则：导出记录即原始捕获副本，包含消息正文、工具参数与结果、以及会话工作目录路径。部署口径见 [web-telemetry-default-mount Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md)。
+
 ## 安装（开发机）
 
 将从源码运行的启动器符号链接到 PATH 上；它通过自身真实路径解析 checkout，因此代码更改会在下次启动时生效，无需构建：
diff --git a/apps/cli/composition.md b/apps/cli/composition.md
index 7082329d6d..870b926054 100644
--- a/apps/cli/composition.md
+++ b/apps/cli/composition.md
@@ -28,12 +28,18 @@ flowchart LR
   cfg --> plugin_tui_tasks
   plugin_tui_llm_retry["llm-retry<br/>@deepseek-ai/dsh-llm-retry"]
   cfg --> plugin_tui_llm_retry
+  plugin_tui_settings["settings<br/>@deepseek-ai/dsh-settings-local"]
+  cfg --> plugin_tui_settings
+  plugin_tui_credentials["credentials<br/>@deepseek-ai/dsh-credentials-local"]
+  cfg --> plugin_tui_credentials
   plugin_tui_llm_pi_ai["llm-pi-ai<br/>@deepseek-ai/dsh-llm-pi-ai"]
   cfg --> plugin_tui_llm_pi_ai
   plugin_tui_session_persistence_jsonl["session-persistence-jsonl<br/>@deepseek-ai/dsh-session-persistence-jsonl"]
   cfg --> plugin_tui_session_persistence_jsonl
   plugin_tui_session_query_sqlite["session-query-sqlite<br/>@deepseek-ai/dsh-session-query-sqlite"]
   cfg --> plugin_tui_session_query_sqlite
+  plugin_tui_telemetry_otel["telemetry-otel<br/>@deepseek-ai/dsh-session-telemetry-otel"]
+  cfg --> plugin_tui_telemetry_otel
   plugin_tui_subprocess["subprocess<br/>@deepseek-ai/dsh-subprocess-local"]
   cfg --> plugin_tui_subprocess
   plugin_tui_bash_local["bash-local<br/>@deepseek-ai/dsh-bash-local"]
@@ -114,9 +120,12 @@ flowchart LR
 | `agent` | `@deepseek-ai/dsh-agent` |
 | `tasks` | `@deepseek-ai/dsh-tasks-local` |
 | `llm-retry` | `@deepseek-ai/dsh-llm-retry` |
+| `settings` | `@deepseek-ai/dsh-settings-local` |
+| `credentials` | `@deepseek-ai/dsh-credentials-local` |
 | `llm-pi-ai` | `@deepseek-ai/dsh-llm-pi-ai` |
 | `session-persistence-jsonl` | `@deepseek-ai/dsh-session-persistence-jsonl` |
 | `session-query-sqlite` | `@deepseek-ai/dsh-session-query-sqlite` |
+| `telemetry-otel` | `@deepseek-ai/dsh-session-telemetry-otel` |
 | `subprocess` | `@deepseek-ai/dsh-subprocess-local` |
 | `bash-local` | `@deepseek-ai/dsh-bash-local` |
 | `tool-bash` | `@deepseek-ai/dsh-tool-bash` |
diff --git a/apps/cli/config/base.cordis.yml b/apps/cli/config/base.cordis.yml
index bc8c3434de..20d3255a7c 100644
--- a/apps/cli/config/base.cordis.yml
+++ b/apps/cli/config/base.cordis.yml
@@ -56,16 +56,30 @@
 - id: llm-retry
   name: '@deepseek-ai/dsh-llm-retry'
 
+# User-settings document (`$DSH_HOME/settings.yaml`, hot-reloaded): a
+# `llm-deepseek:` or `llm-pi-ai:` section there overrides the adapter entries
+# below without a restart, and is what the web Models page writes.
+- id: settings
+  name: '@deepseek-ai/dsh-settings-local'
+
+# Credential store: the live process environment over `$DSH_HOME/.env`
+# (owner-only file, hot-reloaded). Adapters resolve their key references
+# through it at each request, so no key is inlined in this file. The web
+# Models page's key inputs write it through `credentials.set`; nothing hoists
+# the document into the process environment, which would make every stored key
+# read as an unrotatable ambient override.
+- id: credentials
+  name: '@deepseek-ai/dsh-credentials-local'
+
+# The pi-ai multi-provider twin, mounted dormant: zero routes (and no extra
+# models in the picker) until a `llm-pi-ai:` settings section supplies provider
+# profiles — then those routes register live, keys resolving per request
+# through their apiKeyEnv references, and drop again when the section empties.
+# Supplying those profiles is exactly what the web Models page does. Which
+# adapters exist is composition; which providers run is the user's settings
+# document.
 - id: llm-pi-ai
   name: '@deepseek-ai/dsh-llm-pi-ai'
-  config:
-    providers:
-      - provider: openai
-        apiKey: !!js process.env.OPENAI_API_KEY
-        baseURL: !!js process.env.OPENAI_BASE_URL
-      - provider: anthropic
-        apiKey: !!js process.env.ANTHROPIC_API_KEY
-        baseURL: !!js process.env.ANTHROPIC_BASE_URL
 
 - id: session-persistence-jsonl
   name: '@deepseek-ai/dsh-session-persistence-jsonl'
@@ -80,6 +94,38 @@
   config:
     path: !!js launcherSessionQueryPath ?? './.sessions/session-query.db'
 
+# Session telemetry, on for every dsh surface: mirrors every session-log
+# event (assistant/chunk projected to first-of-step) plus ops markers onto
+# OTLP/HTTP log records, streaming on the batch processor's cadence
+# (10s/batch here) — not at exit; a crash loses at most the last unexported
+# interval. No telemetry/record redaction rule is mounted yet, so exports
+# are the raw captured copy; the deployment stance, env seams, and
+# follow-ups are pinned in the web-telemetry-default-mount Agent Note.
+# DSH_TELEMETRY_OTLP_URL overrides the production endpoint, and a non-empty
+# DSH_TELEMETRY_DISABLED — any value, including '0'/'false' — opts the
+# process out (the launchers patch the row disabled; config cannot disable
+# a row). The exporter/processor values bound the shutdown drain to ~1s
+# against an unreachable collector: exporter.timeoutMillis is both the
+# per-attempt socket timeout and the retry deadline (1s effectively
+# disables the SDK's 5-try backoff), maxExportBatchSize == maxQueueSize
+# (both explicit) makes the drain a single batch, and exportTimeoutMillis
+# is the processor's own cap on that one export cycle — the second bound
+# when the exporter's clock alone does not fire. Every surface's exit path
+# drains it: web/headless dispose on SIGINT/SIGTERM, and the TUI's normal
+# exit and /resume handoff both dispose the root.
+- id: telemetry-otel
+  name: '@deepseek-ai/dsh-session-telemetry-otel'
+  config:
+    exporter:
+      url: !!js process.env.DSH_TELEMETRY_OTLP_URL ?? 'https://harness-telemetry.deepseeksvc.com/v1/logs'
+      compression: gzip
+      timeoutMillis: 1000
+    processor:
+      scheduledDelayMillis: 10000
+      maxQueueSize: 2048
+      maxExportBatchSize: 2048
+      exportTimeoutMillis: 1500
+
 - id: subprocess
   name: '@deepseek-ai/dsh-subprocess-local'
 
@@ -223,10 +269,9 @@
 - id: fs-local
   name: '@deepseek-ai/dsh-fs-local'
 
-# The native DeepSeek adapter; reads the key/base-url the boot's layered .env
-# loading left in the environment. Thinking defaults are a surface choice.
+# The native DeepSeek adapter. No key or endpoint is inlined: both resolve per
+# request from the `llm-deepseek:` settings section over this entry, with the
+# key coming from the credential store below. Thinking defaults are a surface
+# choice.
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
-  config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY
-    baseURL: !!js process.env.DEEPSEEK_BASE_URL
diff --git a/apps/cli/config/tui.cordis.yml b/apps/cli/config/tui.cordis.yml
index d6099a5736..980f9d80ad 100644
--- a/apps/cli/config/tui.cordis.yml
+++ b/apps/cli/config/tui.cordis.yml
@@ -22,7 +22,7 @@
   config:
     agents:
       - id: main
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-pro
         cwd: !!js process.cwd()
 
@@ -36,8 +36,8 @@
       Verify your work by running the code or tests. Keep answers brief and
       factual.
 
-# Shipped default: full thinking at max effort on every request (wire-only
-# defaults; they never enter the request header).
+# Shipped default: full thinking at max effort on every request. Exact-model
+# resolution materializes request defaults before the request header is logged.
 - id: llm-deepseek
   config:
     apiKey: !!js process.env.DEEPSEEK_API_KEY
diff --git a/apps/cli/config/web.cordis.yml b/apps/cli/config/web.cordis.yml
index 2f79f136b9..a2fc10804d 100644
--- a/apps/cli/config/web.cordis.yml
+++ b/apps/cli/config/web.cordis.yml
@@ -123,7 +123,7 @@
     - id: api-gateway
       name: '@deepseek-ai/dsh-host-apiproxy'
       config:
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-flash
 
     # ── layer 2: transport/service ──────────────────────────────────────────────
diff --git a/apps/cli/package.json b/apps/cli/package.json
index f1db776206..37cb4138a0 100644
--- a/apps/cli/package.json
+++ b/apps/cli/package.json
@@ -51,6 +51,7 @@
     "@deepseek-ai/dsh-commands": "workspace:^",
     "@deepseek-ai/dsh-compact-basic": "workspace:^",
     "@deepseek-ai/dsh-compact-tool-result-prune": "workspace:^",
+    "@deepseek-ai/dsh-credentials-local": "workspace:^",
     "@deepseek-ai/dsh-frontend": "workspace:^",
     "@deepseek-ai/dsh-fs-local": "workspace:^",
     "@deepseek-ai/dsh-fs-policy": "workspace:^",
@@ -73,7 +74,6 @@
     "@deepseek-ai/dsh-sandbox-local": "workspace:^",
     "@deepseek-ai/dsh-sandbox-policy": "workspace:^",
     "@deepseek-ai/dsh-scope": "workspace:^",
-    "@deepseek-ai/dsh-tool-cordis": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-checkpoint-policy": "workspace:^",
     "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
@@ -81,8 +81,10 @@
     "@deepseek-ai/dsh-session-projection-cache": "workspace:^",
     "@deepseek-ai/dsh-session-query-sqlite": "workspace:^",
     "@deepseek-ai/dsh-session-reference": "workspace:^",
+    "@deepseek-ai/dsh-session-telemetry-otel": "workspace:^",
     "@deepseek-ai/dsh-session-title": "workspace:^",
     "@deepseek-ai/dsh-session-title-first-message-llm": "workspace:^",
+    "@deepseek-ai/dsh-settings-local": "workspace:^",
     "@deepseek-ai/dsh-skill": "workspace:^",
     "@deepseek-ai/dsh-skill-local": "workspace:^",
     "@deepseek-ai/dsh-spill-local": "workspace:^",
@@ -100,6 +102,7 @@
     "@deepseek-ai/dsh-token-meter": "workspace:^",
     "@deepseek-ai/dsh-tool-ask-user": "workspace:^",
     "@deepseek-ai/dsh-tool-bash": "workspace:^",
+    "@deepseek-ai/dsh-tool-cordis": "workspace:^",
     "@deepseek-ai/dsh-tool-fs": "workspace:^",
     "@deepseek-ai/dsh-tool-fs-search": "workspace:^",
     "@deepseek-ai/dsh-tool-goal": "workspace:^",
@@ -121,7 +124,9 @@
     "js-yaml": "^4.2.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-llm-mock-server": "workspace:^",
     "@types/js-yaml": "^4.0.9",
+    "execa": "^10.0.0",
     "node-pty": "1.1.0"
   }
 }
diff --git a/apps/cli/src/app-cli-entry.ts b/apps/cli/src/app-cli-entry.ts
index 1ba1c0fc1e..6ac88d23c5 100644
--- a/apps/cli/src/app-cli-entry.ts
+++ b/apps/cli/src/app-cli-entry.ts
@@ -1,10 +1,12 @@
 /**
  * AppCLIEntry — the pre-cordis boot glue the config-tree dsh surfaces share
  * for the Web/headless surface.
- * Everything here is what must exist before the Loader runs: layered env,
- * the patch composition over the shipped base and surface overlay (profile json + CLI
- * flags + the resolved frontend dist), and the fail-loud triple after the
- * tree settles.
+ * Everything here is what must exist before the Loader runs: the patch
+ * composition over the shipped base and surface overlay (profile json + CLI
+ * flags + the resolved frontend dist), and the fail-loud triple after the tree
+ * settles. The environment is what the bin already loaded (ambient plus the
+ * invoking directory's `.env`); `$DSH_HOME/.env` belongs to the credential
+ * provider and is never hoisted here.
  */
 
 import { readFileSync } from 'node:fs'
@@ -14,8 +16,7 @@ import { join, resolve } from 'node:path'
 import { Context } from 'cordis'
 import type { PatchOptions } from '@cordisjs/plugin-include'
 import yaml from 'js-yaml'
-import { boot, installFailLoud, loadEnv, loadOverlayPatches, loadPersonalPatches } from '@deepseek-ai/dsh-app-boot'
-import { resolveDshHome } from '@deepseek-ai/dsh-paths'
+import { boot, installFailLoud, loadOverlayPatches, loadPersonalPatches } from '@deepseek-ai/dsh-app-boot'
 // Empty type import carries the httpServer Context merge for the port read below.
 import type {} from '@deepseek-ai/dsh-host-webserver'
 
@@ -23,6 +24,9 @@ import type {} from '@deepseek-ai/dsh-host-webserver'
 const PROFILE_DIR = '.dsh-tmp-profile'
 const PROFILE_FILE = 'config.json'
 
+/** The session-telemetry row id the DSH_TELEMETRY_DISABLED switch targets (mounted in web.cordis.yml). */
+const TELEMETRY_ROW_ID = 'telemetry-otel'
+
 /** The webserver schema's all-interfaces bind literal: gates LAN-authority derivation here and the printed LAN URL in web.ts. */
 const ALL_INTERFACES_HOST = '0.0.0.0'
 
@@ -58,6 +62,38 @@ export function resolveLanTrust(
   return { lanAddresses, trustedHosts: [...lanAddresses, ...extra] }
 }
 
+/**
+ * Resolve the telemetry opt-out switch into its boot patch. ANY non-empty
+ * value (including `'0'`/`'false'`) disables: a privacy switch prefers
+ * off-by-mistake over on-by-mistake. Throws when the switch is set but the
+ * row is absent — a silently no-op "disabled" privacy switch would keep
+ * exporting while the user believes it is off.
+ * @param disabledEnv - the raw `DSH_TELEMETRY_DISABLED` value (`undefined` when unset).
+ * @param hasRow - whether the composition carries the {@link TELEMETRY_ROW_ID} row.
+ * @returns the disable patch, or `undefined` when telemetry stays enabled.
+ */
+export function resolveTelemetryPatch(disabledEnv: string | undefined, hasRow: boolean): PatchOptions | undefined {
+  if ((disabledEnv ?? '') === '') return undefined
+  if (!hasRow) {
+    throw new Error(`dsh: DSH_TELEMETRY_DISABLED is set but row "${TELEMETRY_ROW_ID}" is not in this composition`)
+  }
+  return { id: TELEMETRY_ROW_ID, disabled: true }
+}
+
+/**
+ * Whether a config file carries the telemetry row, parsed under the same
+ * `!!js`-tolerant dialect the boot uses — the `hasRow` input for launchers
+ * that compose their patch lists outside {@link AppCLIEntry} (the TUI).
+ * @param file - absolute path of the config or overlay file.
+ * @returns true when a top-level (or inserted) row has the telemetry id.
+ */
+export function configHasTelemetryRow(file: string): boolean {
+  const doc = yaml.load(readFileSync(file, 'utf8'), { schema: includeYamlSchema })
+  if (!Array.isArray(doc)) throw new Error(`dsh: ${file} is not a top-level entry list`)
+  return (doc as { id?: string; insert?: { id?: string }[] }[]).some(row =>
+    row.id === TELEMETRY_ROW_ID || (row.insert ?? []).some(inserted => inserted.id === TELEMETRY_ROW_ID))
+}
+
 /** One profile-json key mapped onto a yml row's config field. */
 interface ProfileMapping {
   jsonPath: string
@@ -144,12 +180,11 @@ export class AppCLIEntry {
   constructor(private readonly options: AppCLIEntryOptions) {}
 
   /**
-   * Run the boot chain: layered env → patch composition → Loader include
-   * boot (dev row before await) → fail-loud triple.
+   * Run the boot chain: patch composition → Loader include boot (dev row
+   * before await) → fail-loud triple.
    * @returns the settled root context and the listening port.
    */
   async run(): Promise<{ ctx: Context; port: number }> {
-    this.loadEnvLayers()
     this.composePatches()
     await this.bootTree()
     this.assertBoot()
@@ -159,11 +194,6 @@ export class AppCLIEntry {
     return { ctx: this.ctx, port }
   }
 
-  /** Layered .env: ambient > cwd (bin already loaded) > $DSH_HOME (loadEnvFile never overrides). */
-  private loadEnvLayers(): void {
-    loadEnv('dsh', resolveDshHome())
-  }
-
   /**
    * Compose the patch set from profile json, CLI flags, and the resolved
    * frontend dist. Patches replace a row's config wholesale, so each patched row's yml
@@ -208,6 +238,12 @@ export class AppCLIEntry {
       if (yml === undefined) throw new Error(`dsh: patch target row "${id}" not found in ${this.options.configPath}`)
       return { id, config: { ...(yml.config ?? {}) as Record<string, unknown>, ...bag } }
     })
+
+    // Telemetry opt-out: a row can only be turned off at the patch layer
+    // (config cannot disable an entry), and the switch must hold BEFORE the
+    // plugin constructs — its exporter.url validation is load-time fail-loud.
+    const telemetryPatch = resolveTelemetryPatch(process.env.DSH_TELEMETRY_DISABLED, rows.has(TELEMETRY_ROW_ID))
+    if (telemetryPatch !== undefined) this.patches.push(telemetryPatch)
   }
 
   /** Shared Loader boot; the dev HMR row mounts before await so the fail-loud sweep covers it. */
diff --git a/apps/cli/src/headless.ts b/apps/cli/src/headless.ts
index 5fef797cc5..3ec2792e8e 100644
--- a/apps/cli/src/headless.ts
+++ b/apps/cli/src/headless.ts
@@ -82,6 +82,17 @@ export async function runHeadless(task: string): Promise<void> {
   })
   const { ctx, port } = await entry.run()
   const dispose = async (): Promise<void> => { await ctx.fiber.dispose() }
+  // Signal exits must still dispose the tree: the composition mounts
+  // exit-drained plugins (telemetry's queued tail and shutdown marker would
+  // otherwise be lost), and Node's default signal exit skips disposal.
+  let signalled = false
+  const disposeAndExit = (code: number): void => {
+    if (signalled) return
+    signalled = true
+    void dispose().finally(() => { process.exit(code) })
+  }
+  process.on('SIGTERM', () => { disposeAndExit(143) })
+  process.on('SIGINT', () => { disposeAndExit(130) })
   // The headless session is web-observable while it runs (same composition).
   process.stderr.write(`dsh: observing at http://127.0.0.1:${String(port)}\n`)
   const api = new InProcessApiClient(toFetchHandler(ctx.apiProxy))
diff --git a/apps/cli/src/tui.ts b/apps/cli/src/tui.ts
index f13451c04e..dee865a0e1 100644
--- a/apps/cli/src/tui.ts
+++ b/apps/cli/src/tui.ts
@@ -26,13 +26,12 @@ import {
   addHarnessSourceSection,
   boot,
   installFailLoud,
-  loadEnv,
   loadOverlayPatches,
   loadPersonalPatches,
   resolveConfigPath,
 } from '@deepseek-ai/dsh-app-boot'
-import { resolveDshHome } from '@deepseek-ai/dsh-paths'
 import { SessionId } from '@deepseek-ai/dsh-session'
+import { configHasTelemetryRow, resolveTelemetryPatch } from './app-cli-entry.ts'
 import { SESSION_QUERY_SQLITE_PATH_KEY } from '@deepseek-ai/dsh-session-query-sqlite'
 import { CONFIGURED_AGENT_IDENTITIES_KEY } from '@deepseek-ai/dsh-agent-loop'
 import type { Context } from 'cordis'
@@ -124,11 +123,12 @@ export async function runTui(
     process.exit(1)
   }
   installFailLoud(NAME)
-  // The bin already loaded the invoking directory's .env; the personal .env
-  // only fills what is still unset (process.loadEnvFile never overrides).
-  loadEnv(NAME, resolveDshHome())
-  // Both .env layers are loaded, so switching the workspace here cannot alter
-  // environment precedence. The cwd IS the workspace seam: the shipped config
+  // The bin already loaded the invoking directory's .env, and that is the
+  // whole environment: $DSH_HOME/.env is credentials-local's writable store,
+  // and hoisting it would make every stored key read as a read-only ambient
+  // override on the next run — unrotatable from the TUI or the web page.
+  // The environment is settled, so switching the workspace here cannot alter
+  // its precedence. The cwd IS the workspace seam: the shipped config
   // resolves the session cwd and the HMR watch root from it, so one chdir moves
   // both together. Sessions themselves live under the Harness home so `/resume`
   // spans every workspace, and are unaffected by this chdir.
@@ -197,16 +197,26 @@ export async function runTui(
   // demo or test config would silently run on the user's provider and model.
   // `--config-replace` additionally discards the base and the surface overlay.
   const replaceTree = configReplace !== undefined
-  const patches = replaceTree ? [] : [
-    ...loadOverlayPatches(NAME, TUI_OVERLAY),
-    ...resolvedConfig === undefined
-      ? loadPersonalPatches(NAME) ?? []
-      : loadOverlayPatches(NAME, resolveConfigPath(resolvedConfig, undefined)),
+  const bootConfig = resolvedConfigReplace === undefined ? BASE_CONFIG : resolveConfigPath(resolvedConfigReplace, undefined)
+  // Same opt-out semantics as the web surface (resolveTelemetryPatch: any
+  // non-empty value disables; setting the switch against a tree without the
+  // row fails loud rather than silently no-opping a privacy switch). The row
+  // presence is checked against the tree actually booting, so a
+  // --config-replace tree is judged on its own rows, not the shipped base's.
+  const telemetryPatch = resolveTelemetryPatch(process.env.DSH_TELEMETRY_DISABLED, configHasTelemetryRow(bootConfig))
+  const patches = [
+    ...replaceTree ? [] : [
+      ...loadOverlayPatches(NAME, TUI_OVERLAY),
+      ...resolvedConfig === undefined
+        ? loadPersonalPatches(NAME) ?? []
+        : loadOverlayPatches(NAME, resolveConfigPath(resolvedConfig, undefined)),
+    ],
+    ...telemetryPatch === undefined ? [] : [telemetryPatch],
   ]
   const queryIndexPath = join(tmpdir(), SESSION_QUERY_DB)
   const ctx = await boot(
     NAME,
-    resolvedConfigReplace === undefined ? BASE_CONFIG : resolveConfigPath(resolvedConfigReplace, undefined),
+    bootConfig,
     patches,
     (hostCtx) => {
       // The launcher owns session identity and the exit line: a config-mounted
diff --git a/apps/cli/tests/snapshots/bash-terminal-card/session.jsonl b/apps/cli/tests/snapshots/bash-terminal-card/session.jsonl
index 4d0354a167..1c8da1c8dd 100644
--- a/apps/cli/tests/snapshots/bash-terminal-card/session.jsonl
+++ b/apps/cli/tests/snapshots/bash-terminal-card/session.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":1783352050753,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783352050753,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo TERMINAL_OK. Then reply with the single word DONE and stop."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783352050755,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783352050756,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783352050756,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":1783352051421,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":5,"time0":1783352051422,"data":{"turn":1,"step":1,"index":0,"dt":[168,28,0,1,0,0,26,30,0,0,1,0,27,1,0,0,0],"texts":["The"," user"," wants"," me"," to"," run"," a"," simple"," bash"," command"," and"," then"," reply"," with"," \"","D","ONE","\"."]}}
 {"type":"assistant/chunk","seq":23,"time":1783352051790,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -11,7 +11,7 @@
 {"type":"assistant/chunk","seq":56,"time":1783352052118,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}}}}
 {"type":"assistant/chunk","seq":57,"time":1783352052118,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2877,"outputTokens":90,"cacheReadTokens":0,"reasoningTokens":18}}}}
 {"type":"assistant/chunk","seq":58,"time":1783352052118,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":59,"time":1783352052121,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":2877,"outputTokens":90,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}
+{"type":"assistant/message","seq":59,"time":1783352052121,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":2877,"outputTokens":90,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}
 {"type":"tool/call","seq":60,"time":1783352052121,"data":{"turn":1,"step":1,"callId":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}}
 {"type":"tool/result","seq":61,"time":1783352052136,"data":{"turn":1,"step":1,"callId":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","content":[{"type":"text","text":"TERMINAL_OK\n"}],"isError":false},"sourceEventSeqs":[60],"surfaceOp":"append"}
 {"type":"step/end","seq":62,"time":1783352052137,"data":{"turn":1,"step":1}}
@@ -25,6 +25,6 @@
 {"type":"assistant/chunk","seq":91,"time":1783352052986,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":92,"time":1783352052986,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":168,"outputTokens":25,"cacheReadTokens":2816,"reasoningTokens":22}}}}
 {"type":"assistant/chunk","seq":93,"time":1783352052986,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":94,"time":1783352052987,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The command ran successfully and output \"TERMINAL_OK\". I should now reply with just \"DONE\"."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":168,"outputTokens":25,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93],"surfaceOp":"append"}
+{"type":"assistant/message","seq":94,"time":1783352052987,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The command ran successfully and output \"TERMINAL_OK\". I should now reply with just \"DONE\"."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":168,"outputTokens":25,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93],"surfaceOp":"append"}
 {"type":"step/end","seq":95,"time":1783352052987,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":96,"time":1783352052987,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/code-mode-dispatch-spill/session.jsonl b/apps/cli/tests/snapshots/code-mode-dispatch-spill/session.jsonl
index 3ae5c51857..a93b2c57d5 100644
--- a/apps/cli/tests/snapshots/code-mode-dispatch-spill/session.jsonl
+++ b/apps/cli/tests/snapshots/code-mode-dispatch-spill/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1785052797818,"data":{"content":[{"type":"text","text":"Using ONE run_code program: call the bash tool exactly once with the command `seq 1 200 | awk '{printf \"line %04d: the quick brown fox jumps over the lazy dog\\n\", $1}'`, then return ONLY the number of lines in its output. Reply with just that number and stop."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785052797825,"data":{"title":"Using ONE run_code program: call","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785052797826,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785052797827,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785052797827,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785052798220,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785052798221,"data":{"turn":1,"step":1,"index":0,"dt":[170,30,0,0,0,30,1,0,0,28,0,0,0,29,30,0,30,0,30,0,0,0,30,0,0,0,0,0,30,30,1],"texts":["The"," user"," wants"," me"," to"," write"," a"," single"," run","_code"," program"," that"," calls"," bash"," exactly"," once"," with"," a"," specific"," command",","," then"," returns"," only"," the"," number"," of"," lines"," in"," its"," output","."]}}
 {"type":"assistant/chunk","seq":38,"time":1785052798781,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":153,"time":1785052799793,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_R6g9Uzx4h0jeUv9g3fno7490","name":"run_code","arguments":"{\"description\": \"Count lines in seq/awk output\", \"code\": \"const result = await tools.bash({\\n  command: \\\"seq 1 200 | awk '{printf \\\\\\\"line %04d: the quick brown fox jumps over the lazy dog\\\\\\\\n\\\\\\\", $1}'\\\",\\n  description: \\\"Generate 200 lines of text\\\"\\n});\\n\\n// Count lines in stdout\\nconst lines = result.kind === \\\"foreground\\\" ? result.stdout.text.trim().split(\\\"\\\\n\\\").length : 0;\\nreturn lines;\"}"}}}}
 {"type":"assistant/chunk","seq":154,"time":1785052799794,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":90,"outputTokens":186,"cacheReadTokens":3968,"reasoningTokens":32}}}}
 {"type":"assistant/chunk","seq":155,"time":1785052799794,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":156,"time":1785052799798,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to write a single run_code program that calls bash exactly once with a specific command, then returns only the number of lines in its output."},{"type":"tool-call","id":"call_00_R6g9Uzx4h0jeUv9g3fno7490","name":"run_code","arguments":"{\"description\": \"Count lines in seq/awk output\", \"code\": \"const result = await tools.bash({\\n  command: \\\"seq 1 200 | awk '{printf \\\\\\\"line %04d: the quick brown fox jumps over the lazy dog\\\\\\\\n\\\\\\\", $1}'\\\",\\n  description: \\\"Generate 200 lines of text\\\"\\n});\\n\\n// Count lines in stdout\\nconst lines = result.kind === \\\"foreground\\\" ? result.stdout.text.trim().split(\\\"\\\\n\\\").length : 0;\\nreturn lines;\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":90,"outputTokens":186,"cacheReadTokens":3968,"reasoningTokens":32}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
+{"type":"assistant/message","seq":156,"time":1785052799798,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to write a single run_code program that calls bash exactly once with a specific command, then returns only the number of lines in its output."},{"type":"tool-call","id":"call_00_R6g9Uzx4h0jeUv9g3fno7490","name":"run_code","arguments":"{\"description\": \"Count lines in seq/awk output\", \"code\": \"const result = await tools.bash({\\n  command: \\\"seq 1 200 | awk '{printf \\\\\\\"line %04d: the quick brown fox jumps over the lazy dog\\\\\\\\n\\\\\\\", $1}'\\\",\\n  description: \\\"Generate 200 lines of text\\\"\\n});\\n\\n// Count lines in stdout\\nconst lines = result.kind === \\\"foreground\\\" ? result.stdout.text.trim().split(\\\"\\\\n\\\").length : 0;\\nreturn lines;\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":90,"outputTokens":186,"cacheReadTokens":3968,"reasoningTokens":32}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
 {"type":"tool/call","seq":157,"time":1785052799799,"data":{"turn":1,"step":1,"callId":"call_00_R6g9Uzx4h0jeUv9g3fno7490","name":"run_code","arguments":"{\"description\": \"Count lines in seq/awk output\", \"code\": \"const result = await tools.bash({\\n  command: \\\"seq 1 200 | awk '{printf \\\\\\\"line %04d: the quick brown fox jumps over the lazy dog\\\\\\\\n\\\\\\\", $1}'\\\",\\n  description: \\\"Generate 200 lines of text\\\"\\n});\\n\\n// Count lines in stdout\\nconst lines = result.kind === \\\"foreground\\\" ? result.stdout.text.trim().split(\\\"\\\\n\\\").length : 0;\\nreturn lines;\"}"}}
 {"type":"tool/code-dispatch-start","seq":158,"time":1785052799893,"data":{"parentCallId":"call_00_R6g9Uzx4h0jeUv9g3fno7490","subCallId":"call_00_R6g9Uzx4h0jeUv9g3fno7490:code:1","name":"bash","arguments":{"command":"seq 1 200 | awk '{printf \"line %04d: the quick brown fox jumps over the lazy dog\\n\", $1}'","description":"Generate 200 lines of text"}}}
 {"type":"tool/code-dispatch","seq":159,"time":1785052799923,"data":{"parentCallId":"call_00_R6g9Uzx4h0jeUv9g3fno7490","subCallId":"call_00_R6g9Uzx4h0jeUv9g3fno7490:code:1","name":"bash","arguments":{"command":"seq 1 200 | awk '{printf \"line %04d: the quick brown fox jumps over the lazy dog\\n\", $1}'","description":"Generate 200 lines of text"},"isError":false,"content":[{"type":"text","text":"line 0001: the quick brown fox jumps over the lazy dog\nline 0002: the quick brown fox jumps over the lazy dog\nline 0003: the quick brown fox jumps over the lazy dog\nline 0004: the quick s over the lazy dog\nline 0198: the quick brown fox jumps over the lazy dog\nline 0199: the quick brown fox jumps over the lazy dog\nline 0200: the quick brown fox jumps over the lazy dog\n\n\n(Omitted 10629 bytes. Full formatted result stored at: {{cwd}}/.spill/session-2d2b9e84a250/825a63550249-bash.txt. Use read with offset/limit, or grep this path to search within it.)"}]}}
@@ -27,6 +27,6 @@
 {"type":"assistant/chunk","seq":187,"time":1785052800731,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"200"}}}}
 {"type":"assistant/chunk","seq":188,"time":1785052800732,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":33,"outputTokens":22,"cacheReadTokens":4224,"reasoningTokens":20}}}}
 {"type":"assistant/chunk","seq":189,"time":1785052800732,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":190,"time":1785052800733,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The result is 200 lines. The user wants me to reply with just that number and stop."},{"type":"text","text":"200"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":33,"outputTokens":22,"cacheReadTokens":4224,"reasoningTokens":20}},"sourceEventSeqs":[163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189],"surfaceOp":"append"}
+{"type":"assistant/message","seq":190,"time":1785052800733,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The result is 200 lines. The user wants me to reply with just that number and stop."},{"type":"text","text":"200"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":33,"outputTokens":22,"cacheReadTokens":4224,"reasoningTokens":20}},"sourceEventSeqs":[163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189],"surfaceOp":"append"}
 {"type":"step/end","seq":191,"time":1785052800733,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":192,"time":1785052800733,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/code-mode/session.jsonl b/apps/cli/tests/snapshots/code-mode/session.jsonl
index 7af580f60a..42c6d902ba 100644
--- a/apps/cli/tests/snapshots/code-mode/session.jsonl
+++ b/apps/cli/tests/snapshots/code-mode/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1785014512140,"data":{"content":[{"type":"text","text":"Using ONE run_code program: call the bash tool twice — exactly `echo CODE_ONE` then exactly `echo CODE_TWO`. Inside that same program, console.log exactly `captured output`, then return the two outputs joined with a plus sign. Reply with that joined string only and stop."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785014512146,"data":{"title":"Using ONE run_code program: call","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785014512147,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785014512148,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785014512148,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785014512526,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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@@ -12,7 +12,7 @@
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-{"type":"assistant/message","seq":343,"time":1785014514837,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to write a single `run_code` program that:\n1. Calls `bash` tool twice - first with `echo CODE_ONE`, then with `echo CODE_TWO`\n2. `console.log` exactly `captured output`\n3. Returns the two outputs joined with a plus sign\n\nLet me think about the structure. The `bash` tool returns an object with stdout/stderr. I need to extract the stdout text from each call.\n\nLooking at the bash output type:\n```\n{\n  kind: \"foreground\";\n  exitCode: number | null;\n  signal: string | null;\n  timedOut: boolean;\n  aborted: boolean;\n  timeoutMs: number;\n  stdout: {\n    text: string;\n    truncated: boolean;\n    spillPath?: string;\n  };\n  stderr: { ... };\n  sandbox?: { ... };\n}\n```\n\nSo I need to access `.stdout.text` from each result.\n\nLet me write the program."},{"type":"tool-call","id":"call_00_D5QaUXWyA2cPRIFIT6o05977","name":"run_code","arguments":"{\"description\": \"Call bash twice, log, join outputs\", \"code\": \"\\nconst r1 = await tools.bash({\\n  command: \\\"echo CODE_ONE\\\",\\n  description: \\\"Echo CODE_ONE\\\"\\n});\\n\\nconst r2 = await tools.bash({\\n  command: \\\"echo CODE_TWO\\\",\\n  description: \\\"Echo CODE_TWO\\\"\\n});\\n\\n// Extract stdout text and trim trailing newlines\\nconst out1 = r1.stdout.text.trim();\\nconst out2 = r2.stdout.text.trim();\\n\\nconsole.log(\\\"captured output\\\");\\n\\nreturn out1 + \\\"+\\\" + out2;\\n\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":85,"outputTokens":373,"cacheReadTokens":3968,"reasoningTokens":202}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342],"surfaceOp":"append"}
+{"type":"assistant/message","seq":343,"time":1785014514837,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to write a single `run_code` program that:\n1. Calls `bash` tool twice - first with `echo CODE_ONE`, then with `echo CODE_TWO`\n2. `console.log` exactly `captured output`\n3. Returns the two outputs joined with a plus sign\n\nLet me think about the structure. The `bash` tool returns an object with stdout/stderr. I need to extract the stdout text from each call.\n\nLooking at the bash output type:\n```\n{\n  kind: \"foreground\";\n  exitCode: number | null;\n  signal: string | null;\n  timedOut: boolean;\n  aborted: boolean;\n  timeoutMs: number;\n  stdout: {\n    text: string;\n    truncated: boolean;\n    spillPath?: string;\n  };\n  stderr: { ... };\n  sandbox?: { ... };\n}\n```\n\nSo I need to access `.stdout.text` from each result.\n\nLet me write the program."},{"type":"tool-call","id":"call_00_D5QaUXWyA2cPRIFIT6o05977","name":"run_code","arguments":"{\"description\": \"Call bash twice, log, join outputs\", \"code\": \"\\nconst r1 = await tools.bash({\\n  command: \\\"echo CODE_ONE\\\",\\n  description: \\\"Echo CODE_ONE\\\"\\n});\\n\\nconst r2 = await tools.bash({\\n  command: \\\"echo CODE_TWO\\\",\\n  description: \\\"Echo CODE_TWO\\\"\\n});\\n\\n// Extract stdout text and trim trailing newlines\\nconst out1 = r1.stdout.text.trim();\\nconst out2 = r2.stdout.text.trim();\\n\\nconsole.log(\\\"captured output\\\");\\n\\nreturn out1 + \\\"+\\\" + out2;\\n\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":85,"outputTokens":373,"cacheReadTokens":3968,"reasoningTokens":202}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342],"surfaceOp":"append"}
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 {"type":"tool/code-dispatch","seq":346,"time":1785014514990,"data":{"parentCallId":"call_00_D5QaUXWyA2cPRIFIT6o05977","subCallId":"call_00_D5QaUXWyA2cPRIFIT6o05977:code:1","name":"bash","arguments":{"command":"echo CODE_ONE","description":"Echo CODE_ONE"},"isError":false,"content":[{"type":"text","text":"CODE_ONE\n"}]}}
@@ -29,6 +29,6 @@
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-{"type":"assistant/message","seq":430,"time":1785014516201,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The program ran successfully. The output shows:\n- `captured output` (from console.log)\n- `CODE_ONE+CODE_TWO` (the returned joined string)\n\nThe user asked me to reply with that joined string only and stop. So I'll reply with just `CODE_ONE+CODE_TWO`."},{"type":"text","text":"CODE_ONE+CODE_TWO"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":97,"outputTokens":73,"cacheReadTokens":4352,"reasoningTokens":65}},"sourceEventSeqs":[352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429],"surfaceOp":"append"}
+{"type":"assistant/message","seq":430,"time":1785014516201,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The program ran successfully. The output shows:\n- `captured output` (from console.log)\n- `CODE_ONE+CODE_TWO` (the returned joined string)\n\nThe user asked me to reply with that joined string only and stop. So I'll reply with just `CODE_ONE+CODE_TWO`."},{"type":"text","text":"CODE_ONE+CODE_TWO"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":97,"outputTokens":73,"cacheReadTokens":4352,"reasoningTokens":65}},"sourceEventSeqs":[352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429],"surfaceOp":"append"}
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diff --git a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.1.jsonl b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.1.jsonl
index 7027bd50f3..300f887178 100644
--- a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.1.jsonl
+++ b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.1.jsonl
@@ -2,12 +2,12 @@
 {"type":"turn/start","seq":0,"time":1783957884563,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783957884564,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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-{"type":"assistant/message","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
+{"type":"assistant/message","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
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diff --git a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.2.jsonl b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.2.jsonl
index 5d383f6421..116ad7d42e 100644
--- a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.2.jsonl
+++ b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.2.jsonl
@@ -2,12 +2,12 @@
 {"type":"turn/start","seq":0,"time":1783957884700,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783957884700,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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-{"type":"assistant/message","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
+{"type":"assistant/message","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
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 {"type":"turn/end","seq":11,"time":1783957884701,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.jsonl b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.jsonl
index 0e9355b4c5..f6b0f49e0a 100644
--- a/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.jsonl
+++ b/apps/cli/tests/snapshots/cordis-dynamic-toolchain/session.jsonl
@@ -2,13 +2,13 @@
 {"type":"turn/start","seq":0,"time":1783957884479,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_ACP_OK."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783957884486,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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 {"type":"assistant/chunk","seq":6,"time":1783950000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
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 {"type":"assistant/chunk","seq":8,"time":1783950000009,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":9,"time":1783957884487,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
+{"type":"assistant/message","seq":9,"time":1783957884487,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
 {"type":"tool/call","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
 {"type":"tool/result","seq":11,"time":1783957884488,"data":{"turn":1,"step":1,"callId":"advanced-mount","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-marker\"; available until unmounted or DSH restarts)."}],"isError":false},"sourceEventSeqs":[10],"surfaceOp":"append"}
 {"type":"step/end","seq":12,"time":1783957884489,"data":{"turn":1,"step":1}}
@@ -18,7 +18,7 @@
 {"type":"assistant/chunk","seq":16,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Verify the temporary marker Plugin\"}"}}}}
 {"type":"assistant/chunk","seq":17,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":18,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":19,"time":1783957884490,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Verify the temporary marker Plugin\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}
+{"type":"assistant/message","seq":19,"time":1783957884490,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Verify the temporary marker Plugin\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}
 {"type":"tool/call","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Verify the temporary marker Plugin\"}"}}
 {"type":"tool/code-dispatch","seq":21,"time":1783957884560,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}
 {"type":"tool/result","seq":22,"time":1783957884561,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[20],"surfaceOp":"append"}
@@ -29,7 +29,7 @@
 {"type":"assistant/chunk","seq":27,"time":1783950000028,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":28,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":29,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":30,"time":1783957884562,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
+{"type":"assistant/message","seq":30,"time":1783957884562,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
 {"type":"tool/call","seq":31,"time":1783957884562,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
 {"type":"tool/result","seq":32,"time":1783957884593,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false},"sourceEventSeqs":[31],"surfaceOp":"append"}
 {"type":"step/end","seq":33,"time":1783957884593,"data":{"turn":1,"step":3}}
@@ -39,7 +39,7 @@
 {"type":"assistant/chunk","seq":37,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}}
 {"type":"assistant/chunk","seq":38,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":39,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}
+{"type":"assistant/message","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}
 {"type":"tool/call","seq":41,"time":1783957884594,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}
 {"type":"tool/result","seq":42,"time":1783957884717,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-acp-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[41],"surfaceOp":"append"}
 {"type":"step/end","seq":43,"time":1783957884718,"data":{"turn":1,"step":4}}
@@ -49,7 +49,7 @@
 {"type":"assistant/chunk","seq":47,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
 {"type":"assistant/chunk","seq":48,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}
+{"type":"assistant/message","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}
 {"type":"tool/call","seq":51,"time":1783957884719,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
 {"type":"tool/result","seq":52,"time":1783957884719,"data":{"turn":1,"step":5,"callId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false},"sourceEventSeqs":[51],"surfaceOp":"append"}
 {"type":"step/end","seq":53,"time":1783957884719,"data":{"turn":1,"step":5}}
@@ -59,6 +59,6 @@
 {"type":"assistant/chunk","seq":57,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_ACP_OK"}}}}
 {"type":"assistant/chunk","seq":58,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}
+{"type":"assistant/message","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}
 {"type":"step/end","seq":61,"time":1783957884721,"data":{"turn":1,"step":6}}
 {"type":"turn/end","seq":62,"time":1783957884721,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/dynamic-workflow/session.1.jsonl b/apps/cli/tests/snapshots/dynamic-workflow/session.1.jsonl
index 42b73e2084..4c0cb5762a 100644
--- a/apps/cli/tests/snapshots/dynamic-workflow/session.1.jsonl
+++ b/apps/cli/tests/snapshots/dynamic-workflow/session.1.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":1783600636316,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783600636316,"data":{"content":[{"type":"text","text":"Reply with exactly the word WF_CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783600636316,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783600636317,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783600636317,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":1783600638073,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":5,"time0":1783600638073,"data":{"turn":1,"step":1,"index":0,"dt":[100,16,0,0,0,0,24,0,0,0,0,29,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," \"","WF","_CH","ILD","_OK","\""," and"," nothing"," else","."]}}
 {"type":"assistant/chunk","seq":23,"time":1783600638276,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -11,6 +11,6 @@
 {"type":"assistant/chunk","seq":29,"time":1783600638280,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"WF_CHILD_OK"}}}}
 {"type":"assistant/chunk","seq":30,"time":1783600638280,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":17,"outputTokens":23,"cacheReadTokens":3072,"reasoningTokens":18}}}}
 {"type":"assistant/chunk","seq":31,"time":1783600638280,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":32,"time":1783600638281,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly \"WF_CHILD_OK\" and nothing else."},{"type":"text","text":"WF_CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":17,"outputTokens":23,"cacheReadTokens":3072,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31],"surfaceOp":"append"}
+{"type":"assistant/message","seq":32,"time":1783600638281,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly \"WF_CHILD_OK\" and nothing else."},{"type":"text","text":"WF_CHILD_OK"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":17,"outputTokens":23,"cacheReadTokens":3072,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31],"surfaceOp":"append"}
 {"type":"step/end","seq":33,"time":1783600638281,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":34,"time":1783600638281,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/dynamic-workflow/session.jsonl b/apps/cli/tests/snapshots/dynamic-workflow/session.jsonl
index 9083060639..d5bb085c45 100644
--- a/apps/cli/tests/snapshots/dynamic-workflow/session.jsonl
+++ b/apps/cli/tests/snapshots/dynamic-workflow/session.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":1783600631838,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783600631838,"data":{"content":[{"type":"text","text":"Use the workflow tool exactly once, with args omitted, meta set to { \"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\" }, and this EXACT script body (copy it verbatim):\nphase('Run')\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\nreturn { reply }\nAfter the workflow returns, reply with the single word WORKFLOW_DONE and stop. Do not use any other tool."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783600631839,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783600631839,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783600631839,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":1783600634643,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":5,"time0":1783600634643,"data":{"turn":1,"step":1,"index":0,"dt":[991,0,0,0,0,0,0,0,0,0,1,0,0,0,108,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,8,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," use"," the"," workflow"," tool"," exactly"," once"," with"," specific"," parameters","."," Let"," me"," carefully"," follow"," the"," instructions",":\n\n","1","."," args"," omitted"," (","so"," I"," don","'t"," include"," it",")\n","2","."," meta"," ="," {"," \"","name","\":"," \"","sn","apshot","-flow","\","," \"","description","\":"," \"","one"," child"," for"," the"," snapshot","\""," }\n","3","."," script"," ="," as"," given"," verb","atim","\n","4","."," After"," it"," returns",","," reply"," with"," \"","WORK","FL","OW","_D","ONE","\"\n\n","Let"," me"," do"," exactly"," that","."]}}
 {"type":"assistant/chunk","seq":93,"time":1783600635756,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -11,7 +11,7 @@
 {"type":"assistant/chunk","seq":156,"time":1783600636246,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}}}}
 {"type":"assistant/chunk","seq":157,"time":1783600636246,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3174,"outputTokens":191,"cacheReadTokens":0,"reasoningTokens":88}}}}
 {"type":"assistant/chunk","seq":158,"time":1783600636246,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":159,"time":1783600636247,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the workflow tool exactly once with specific parameters. Let me carefully follow the instructions:\n\n1. args omitted (so I don't include it)\n2. meta = { \"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\" }\n3. script = as given verbatim\n4. After it returns, reply with \"WORKFLOW_DONE\"\n\nLet me do exactly that."},{"type":"tool-call","id":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3174,"outputTokens":191,"cacheReadTokens":0,"reasoningTokens":88}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158],"surfaceOp":"append"}
+{"type":"assistant/message","seq":159,"time":1783600636247,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the workflow tool exactly once with specific parameters. Let me carefully follow the instructions:\n\n1. args omitted (so I don't include it)\n2. meta = { \"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\" }\n3. script = as given verbatim\n4. After it returns, reply with \"WORKFLOW_DONE\"\n\nLet me do exactly that."},{"type":"tool-call","id":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":3174,"outputTokens":191,"cacheReadTokens":0,"reasoningTokens":88}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158],"surfaceOp":"append"}
 {"type":"tool/call","seq":160,"time":1783600636247,"data":{"turn":1,"step":1,"callId":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}}
 {"type":"tool/result","seq":161,"time":1783600638304,"data":{"turn":1,"step":1,"callId":"call_00_dD2BLuNeJCTh2iiYC1QR3449","content":[{"type":"text","text":"workflow \"snapshot-flow\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WF_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[160],"surfaceOp":"append"}
 {"type":"step/end","seq":162,"time":1783600638304,"data":{"turn":1,"step":1}}
@@ -24,6 +24,6 @@
 {"type":"assistant/chunk","seq":202,"time":1783600640865,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"WORKFLOW_DONE"}}}}
 {"type":"assistant/chunk","seq":203,"time":1783600640865,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":328,"outputTokens":36,"cacheReadTokens":3072,"reasoningTokens":30}}}}
 {"type":"assistant/chunk","seq":204,"time":1783600640865,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":205,"time":1783600640865,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The workflow returned successfully with the reply \"WF_CHILD_OK\". Now I need to reply with exactly \"WORKFLOW_DONE\" and stop."},{"type":"text","text":"WORKFLOW_DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":328,"outputTokens":36,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
+{"type":"assistant/message","seq":205,"time":1783600640865,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The workflow returned successfully with the reply \"WF_CHILD_OK\". Now I need to reply with exactly \"WORKFLOW_DONE\" and stop."},{"type":"text","text":"WORKFLOW_DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":328,"outputTokens":36,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
 {"type":"step/end","seq":206,"time":1783600640865,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":207,"time":1783600640865,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/multi-turn-conversation/session.jsonl b/apps/cli/tests/snapshots/multi-turn-conversation/session.jsonl
index 549dc342a7..5f45d65041 100644
--- a/apps/cli/tests/snapshots/multi-turn-conversation/session.jsonl
+++ b/apps/cli/tests/snapshots/multi-turn-conversation/session.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":1783352113765,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783352113765,"data":{"content":[{"type":"text","text":"Reply with exactly the word: ONE. No tools."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783352113767,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783352113768,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783352113768,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":1783352114428,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":5,"time0":1783352114428,"data":{"turn":1,"step":1,"index":0,"dt":[114,28,1,0,0,1,28,1,1,0,0,1,24,1,29,1,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," the"," word"," \"","ONE","\""," and"," use"," no"," tools","."]}}
 {"type":"assistant/chunk","seq":23,"time":1783352114658,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -11,7 +11,7 @@
 {"type":"assistant/chunk","seq":26,"time":1783352114687,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"ONE"}}}}
 {"type":"assistant/chunk","seq":27,"time":1783352114687,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2864,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":18}}}}
 {"type":"assistant/chunk","seq":28,"time":1783352114687,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":29,"time":1783352114690,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"ONE\" and use no tools."},{"type":"text","text":"ONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":2864,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],"surfaceOp":"append"}
+{"type":"assistant/message","seq":29,"time":1783352114690,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"ONE\" and use no tools."},{"type":"text","text":"ONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":2864,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],"surfaceOp":"append"}
 {"type":"step/end","seq":30,"time":1783352114690,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":31,"time":1783352114690,"data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"turn/start","seq":32,"time":1783352114699,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"user"}}}}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":58,"time":1783352115610,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"TWO"}}}}
 {"type":"assistant/chunk","seq":59,"time":1783352115610,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":64,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}}}}
 {"type":"assistant/chunk","seq":60,"time":1783352115610,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":61,"time":1783352115611,"data":{"turn":2,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"TWO\" and no tools."},{"type":"text","text":"TWO"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":64,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60],"surfaceOp":"append"}
+{"type":"assistant/message","seq":61,"time":1783352115611,"data":{"turn":2,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"TWO\" and no tools."},{"type":"text","text":"TWO"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":64,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60],"surfaceOp":"append"}
 {"type":"step/end","seq":62,"time":1783352115611,"data":{"turn":2,"step":1}}
 {"type":"turn/end","seq":63,"time":1783352115611,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/parallel-file-reads/session.jsonl b/apps/cli/tests/snapshots/parallel-file-reads/session.jsonl
index e83f0cd59c..bfe80d1949 100644
--- a/apps/cli/tests/snapshots/parallel-file-reads/session.jsonl
+++ b/apps/cli/tests/snapshots/parallel-file-reads/session.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the read tool twice in the same assistant message: read a.txt and b.txt. Then reply DONE."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_read_a","name":"read","argumentsDelta":"{\"file_path\":\"a.txt\"}"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_read_a","name":"read","arguments":"{\"file_path\":\"a.txt\"}"}}}}
@@ -11,7 +11,7 @@
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_read_b","name":"read","arguments":"{\"file_path\":\"b.txt\"}"}}}}
 {"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":12,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"call_read_a","name":"read","arguments":"{\"file_path\":\"a.txt\"}"},{"type":"tool-call","id":"call_read_b","name":"read","arguments":"{\"file_path\":\"b.txt\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[4,5,6,7,8,9,10,11],"surfaceOp":"append"}
+{"type":"assistant/message","seq":12,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"call_read_a","name":"read","arguments":"{\"file_path\":\"a.txt\"}"},{"type":"tool-call","id":"call_read_b","name":"read","arguments":"{\"file_path\":\"b.txt\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[4,5,6,7,8,9,10,11],"surfaceOp":"append"}
 {"type":"tool/call","seq":13,"time":0,"data":{"turn":1,"step":1,"callId":"call_read_a","name":"read","arguments":"{\"file_path\":\"a.txt\"}"}}
 {"type":"tool/call","seq":14,"time":0,"data":{"turn":1,"step":1,"callId":"call_read_b","name":"read","arguments":"{\"file_path\":\"b.txt\"}"}}
 {"type":"tool/result","seq":15,"time":0,"data":{"turn":1,"step":1,"callId":"call_read_a","content":[{"type":"text","text":"<path>{{cwd}}/a.txt</path>\n<type>file</type>\n<content>\n1: alpha\n\n(End of file - total 1 lines)\n</content>"}],"isError":false},"sourceEventSeqs":[13],"surfaceOp":"append"}
@@ -23,6 +23,6 @@
 {"type":"assistant/chunk","seq":21,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":1}}}}
 {"type":"assistant/chunk","seq":23,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":24,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":1}},"sourceEventSeqs":[19,20,21,22,23],"surfaceOp":"append"}
+{"type":"assistant/message","seq":24,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":1}},"sourceEventSeqs":[19,20,21,22,23],"surfaceOp":"append"}
 {"type":"step/end","seq":25,"time":0,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":26,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/snapshots/todo-plan/session.jsonl b/apps/cli/tests/snapshots/todo-plan/session.jsonl
index 3591582b9b..da2ac7dc25 100644
--- a/apps/cli/tests/snapshots/todo-plan/session.jsonl
+++ b/apps/cli/tests/snapshots/todo-plan/session.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":1783352057655,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":1783352057655,"data":{"content":[{"type":"text","text":"Use the todo_write tool to record a plan with exactly three todos: \"read the code\" (in_progress), \"write the fix\" (pending), \"run the tests\" (pending). Send all three in one todo_write call. Then reply with the single word DONE and stop."}],"source":{"kind":"user"}},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":1783352057657,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":3,"time":1783352057657,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":3,"time":1783352057657,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":4,"time":1783352058320,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":5,"time0":1783352058320,"data":{"turn":1,"step":1,"index":0,"dt":[106,40,1,0,0,0,17,0,0,0,1,26,1,1,0,0,1,26,0,31,1,25,0,0,0,29,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," use"," the"," todo","_write"," tool"," to"," record"," a"," plan"," with"," exactly"," three"," todos"," in"," the"," specified"," status","es",","," then"," reply"," with"," \"","D","ONE","\"."]}}
 {"type":"assistant/chunk","seq":36,"time":1783352058717,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -11,7 +11,7 @@
 {"type":"assistant/chunk","seq":92,"time":1783352059096,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_fjAnBThbDjxepBtp3hDt3264","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"read the code\", \"status\": \"in_progress\"}, {\"content\": \"write the fix\", \"status\": \"pending\"}, {\"content\": \"run the tests\", \"status\": \"pending\"}]}"}}}}
 {"type":"assistant/chunk","seq":93,"time":1783352059096,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2913,"outputTokens":121,"cacheReadTokens":0,"reasoningTokens":31}}}}
 {"type":"assistant/chunk","seq":94,"time":1783352059096,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":95,"time":1783352059099,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the todo_write tool to record a plan with exactly three todos in the specified statuses, then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fjAnBThbDjxepBtp3hDt3264","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"read the code\", \"status\": \"in_progress\"}, {\"content\": \"write the fix\", \"status\": \"pending\"}, {\"content\": \"run the tests\", \"status\": \"pending\"}]}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":2913,"outputTokens":121,"cacheReadTokens":0,"reasoningTokens":31}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94],"surfaceOp":"append"}
+{"type":"assistant/message","seq":95,"time":1783352059099,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the todo_write tool to record a plan with exactly three todos in the specified statuses, then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fjAnBThbDjxepBtp3hDt3264","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"read the code\", \"status\": \"in_progress\"}, {\"content\": \"write the fix\", \"status\": \"pending\"}, {\"content\": \"run the tests\", \"status\": \"pending\"}]}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":2913,"outputTokens":121,"cacheReadTokens":0,"reasoningTokens":31}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94],"surfaceOp":"append"}
 {"type":"tool/call","seq":96,"time":1783352059099,"data":{"turn":1,"step":1,"callId":"call_00_fjAnBThbDjxepBtp3hDt3264","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"read the code\", \"status\": \"in_progress\"}, {\"content\": \"write the fix\", \"status\": \"pending\"}, {\"content\": \"run the tests\", \"status\": \"pending\"}]}"}}
 {"type":"todo/write","seq":97,"time":1783352059100,"data":{"todos":[{"content":"read the code","status":"in_progress"},{"content":"write the fix","status":"pending"},{"content":"run the tests","status":"pending"}]}}
 {"type":"tool/result","seq":98,"time":1783352059101,"data":{"turn":1,"step":1,"callId":"call_00_fjAnBThbDjxepBtp3hDt3264","content":[{"type":"text","text":"Updated todo list: 2 pending, 1 in progress, 0 completed."}],"isError":false},"sourceEventSeqs":[96],"surfaceOp":"append"}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":127,"time":1783352059980,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":128,"time":1783352059980,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}}}}
 {"type":"assistant/chunk","seq":129,"time":1783352059980,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":130,"time":1783352059981,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The todos have been written successfully. Now I just need to reply with the single word \"DONE\"."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129],"surfaceOp":"append"}
+{"type":"assistant/message","seq":130,"time":1783352059981,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The todos have been written successfully. Now I just need to reply with the single word \"DONE\"."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129],"surfaceOp":"append"}
 {"type":"step/end","seq":131,"time":1783352059981,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":132,"time":1783352059981,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/cli/tests/telemetry-switch.spec.ts b/apps/cli/tests/telemetry-switch.spec.ts
new file mode 100644
index 0000000000..0735aa93c7
--- /dev/null
+++ b/apps/cli/tests/telemetry-switch.spec.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from 'vitest'
+import { resolveTelemetryPatch } from '../src/app-cli-entry.ts'
+
+describe('resolveTelemetryPatch', () => {
+  it('keeps telemetry enabled when the switch is unset or empty', () => {
+    expect(resolveTelemetryPatch(undefined, true)).toBeUndefined()
+    expect(resolveTelemetryPatch('', true)).toBeUndefined()
+  })
+
+  it('disables on ANY non-empty value, including falsy-looking ones', () => {
+    for (const value of ['1', '0', 'false', 'no']) {
+      expect(resolveTelemetryPatch(value, true)).toEqual({ id: 'telemetry-otel', disabled: true })
+    }
+  })
+
+  it('fails loud when the switch is set but the row is absent', () => {
+    expect(() => resolveTelemetryPatch('1', false)).toThrow('DSH_TELEMETRY_DISABLED is set but row "telemetry-otel" is not in this composition')
+  })
+
+  it('ignores a missing row while the switch is unset', () => {
+    expect(resolveTelemetryPatch(undefined, false)).toBeUndefined()
+  })
+})
diff --git a/apps/cli/tests/tui-keyless-smoke.e2e.ts b/apps/cli/tests/tui-keyless-smoke.e2e.ts
index 59042892e1..359fe6338e 100644
--- a/apps/cli/tests/tui-keyless-smoke.e2e.ts
+++ b/apps/cli/tests/tui-keyless-smoke.e2e.ts
@@ -130,7 +130,9 @@ function smoke(overrides: Partial<TuiPtySmokeOptions> & { label: string }): Prom
     tempDirPrefix: 'dsh-tui-smoke-',
     binScript: dshBinScript,
     tsconfigPath,
-    env: { DEEPSEEK_API_KEY: 'keyless-tui-no-call' },
+    // Telemetry now mounts in the shared base: keep fixture sessions from
+    // POSTing to the production endpoint when run outside CI's workflow env.
+    env: { DEEPSEEK_API_KEY: 'keyless-tui-no-call', DSH_TELEMETRY_DISABLED: '1' },
     // Artifact CI builds and smokes concurrently on a contended runner.
     ...(process.env.DSH_EXAMPLE_MODE === 'lib' ? { timeoutMs: 60_000 } : {}),
     ...overrides,
@@ -353,34 +355,40 @@ describe('dsh CLI keyless smoke (apps/cli through the same PTY)', () => {
     expect(output).toContain('\u001B[?2004l')
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 
-  it('applies the personal overlay: config.yaml patches the tree and .env feeds its !!js', async () => {
-    // The whole personal-config chain in one boot: the personal .env supplies
-    // the variable, config.yaml patches the `tui` row — a row the SURFACE
-    // OVERLAY inserted, not one the base declares — with a `!!js` reference to
-    // it, and the banner renders the patched welcome verbatim. That proves a
-    // later patch list reaches a row an earlier one inserted.
+  it('applies the personal overlay: config.yaml patches an overlay-inserted row, the invoking directory\'s .env feeds its !!js, and the home .env stays out of the environment', async () => {
+    // The whole personal-config chain in one boot, plus the environment layer
+    // it deliberately excludes. config.yaml patches the `tui` row — a row the
+    // SURFACE OVERLAY inserted, not one the base declares — proving a later
+    // patch list reaches a row an earlier one inserted. The single `!!js`
+    // expression prefers the PERSONAL variable, so the welcome can only render
+    // the project value while the harness home's .env — the credential store
+    // of `dsh-credentials-local` — is NOT hoisted into `process.env`; hoisting
+    // it would make every stored key read as a read-only launch override on
+    // the next run and hand it to every subprocess the agent starts.
     const output = await smoke({
       label: 'dsh personal overlay',
       tempDirPrefix: 'dsh-personal-overlay-',
       binScript: dshBinScript,
       configArgs: [],
       prepare: seedWorkspace({
+        workspace: { '.env': 'DSH_PROJECT_WELCOME=PROJECT OVERLAY READY.\n' },
         personal: {
-          '.env': 'DSH_PERSONAL_WELCOME=PERSONAL OVERLAY READY.\n',
+          '.env': 'DSH_PERSONAL_WELCOME=HOME ENV LEAKED.\n',
           'config.yaml': [
             '- id: workspace-context',
             '  disabled: true',
             '- id: tui',
             '  config:',
             "    sessionId: !!js configuredAgentIdentities?.main?.id ?? 'main'",
-            '    welcome: !!js process.env.DSH_PERSONAL_WELCOME',
+            '    welcome: !!js process.env.DSH_PERSONAL_WELCOME ?? process.env.DSH_PROJECT_WELCOME',
             '',
           ].join('\n'),
         },
       }),
-      actions: [{ waitFor: 'PERSONAL OVERLAY READY.', send: '/exit\r' }],
+      actions: [{ waitFor: 'PROJECT OVERLAY READY.', send: '/exit\r' }],
     })
-    expect(output).toContain('PERSONAL OVERLAY READY.')
+    expect(output).toContain('PROJECT OVERLAY READY.')
+    expect(output).not.toContain('HOME ENV LEAKED.')
     expect(output).toContain('\u001B[?2004l')
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 
@@ -443,7 +451,7 @@ describe('dsh CLI keyless smoke (apps/cli through the same PTY)', () => {
             '  config:',
             '    agents:',
             '      - id: main',
-            '        provider: deepseek',
+            '        provider: deepseek-official',
             '        model: deepseek-v4-flash',
             '        cwd: !!js process.cwd()',
             '- id: tui',
diff --git a/apps/cli/tests/tui.snapshot.ts b/apps/cli/tests/tui.snapshot.ts
index fdbc7fb27e..078e4c191e 100644
--- a/apps/cli/tests/tui.snapshot.ts
+++ b/apps/cli/tests/tui.snapshot.ts
@@ -36,7 +36,7 @@ import { HeadlessTerminal } from '../../../packages/ui/tui/tests/headless-termin
 const SNAPSHOTS_DIR = join(dirname(fileURLToPath(import.meta.url)), 'snapshots')
 // Keep pre-normalization layout widths identical across macOS and Linux.
 const SNAPSHOT_TMP_ROOT = process.platform === 'win32' ? tmpdir() : '/tmp'
-const PROVIDERS = [{ id: 'deepseek', models: [{ id: 'deepseek-v4-flash', contextWindow: 128_000 }] }]
+const PROVIDERS = [{ id: 'deepseek-official', models: [{ id: 'deepseek-v4-flash', contextWindow: 128_000 }] }]
 const UUID_RE = /[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/gi
 
 type SnapshotMode = 'replay' | 'record' | 'refresh'
@@ -305,7 +305,7 @@ async function runScenario(scenario: Scenario): Promise<ScenarioResult> {
     const handle = await ctx.agents.create({
       sessionId: SessionId('main-session'),
       meta: { cwd },
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     })
     const agent: Agent = handle.agent
     controller = createTuiChat(ctx, {
diff --git a/apps/web/index.html b/apps/web/index.html
index fe5901f353..c9fc7d124c 100644
--- a/apps/web/index.html
+++ b/apps/web/index.html
@@ -3,6 +3,7 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <title>DeepSeek Harness</title>
   </head>
   <body>
diff --git a/apps/web/public/favicon.svg b/apps/web/public/favicon.svg
new file mode 100644
index 0000000000..8a8fc56752
--- /dev/null
+++ b/apps/web/public/favicon.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="50.000000" height="50.000000" viewBox="0 0 50 50" fill="none">
+	<path id="path" d="M48.8354 10.0479C48.3232 9.79199 48.1025 10.2798 47.8032 10.5278C47.7007 10.6079 47.6143 10.7119 47.5273 10.8076C46.7793 11.624 45.9048 12.1597 44.7622 12.0957C43.0923 12 41.666 12.5356 40.4058 13.8398C40.1377 12.2319 39.2476 11.272 37.8926 10.6558C37.1836 10.3359 36.4668 10.0156 35.9702 9.31982C35.6235 8.82373 35.5293 8.27197 35.356 7.72754C35.2456 7.3999 35.1353 7.06396 34.7651 7.00781C34.3633 6.94385 34.2056 7.2876 34.0479 7.57568C33.418 8.75195 33.1733 10.0479 33.1973 11.3599C33.2524 14.312 34.4736 16.6641 36.8999 18.3359C37.1758 18.5278 37.2466 18.7197 37.1597 19C36.9946 19.5757 36.7974 20.1357 36.624 20.7119C36.5137 21.0801 36.3486 21.1597 35.9624 21C34.6309 20.4321 33.481 19.5918 32.4644 18.5757C30.7393 16.8721 29.1792 14.9917 27.2334 13.52C26.7764 13.1758 26.3193 12.856 25.8467 12.5518C23.8618 10.584 26.1069 8.96777 26.627 8.77588C27.1704 8.57568 26.8159 7.8877 25.0591 7.896C23.3022 7.90381 21.6953 8.50391 19.647 9.30371C19.3477 9.42383 19.0322 9.51172 18.7095 9.58398C16.8501 9.22363 14.9199 9.14355 12.9033 9.37598C9.10596 9.80762 6.07275 11.6396 3.84326 14.7681C1.16455 18.5278 0.53418 22.7998 1.30664 27.2559C2.11768 31.9521 4.46582 35.8398 8.07373 38.8799C11.8159 42.0322 16.1255 43.5762 21.041 43.2803C24.0269 43.104 27.3516 42.6963 31.1016 39.4561C32.0469 39.936 33.0396 40.1279 34.686 40.272C35.9546 40.3921 37.1758 40.208 38.1211 40.0078C39.6021 39.688 39.4995 38.2881 38.9639 38.0322C34.623 35.9678 35.5762 36.8081 34.71 36.1279C36.9155 33.4639 40.2402 30.6958 41.54 21.728C41.6426 21.0161 41.5557 20.5679 41.54 19.9917C41.5322 19.6396 41.6108 19.5039 42.0049 19.4639C43.0923 19.3359 44.1479 19.0317 45.1167 18.4878C47.9292 16.9199 49.064 14.3438 49.3315 11.2559C49.3711 10.7837 49.3237 10.2959 48.8354 10.0479ZM24.3262 37.8398C20.1196 34.4639 18.0791 33.3521 17.2358 33.3999C16.4482 33.4482 16.5898 34.3682 16.7632 34.9678C16.9443 35.5601 17.1812 35.9683 17.5117 36.4878C17.7402 36.832 17.8979 37.3442 17.2832 37.728C15.9282 38.584 13.5728 37.4399 13.4624 37.3838C10.7207 35.7358 8.42822 33.5601 6.81348 30.584C5.25342 27.7197 4.34766 24.6479 4.19775 21.3677C4.1582 20.5757 4.38672 20.2959 5.15869 20.1519C6.17529 19.96 7.22314 19.9199 8.23926 20.0718C12.5327 20.7119 16.1885 22.6719 19.2529 25.7759C21.002 27.5439 22.3252 29.6558 23.6885 31.7202C25.1377 33.9121 26.6978 36 28.6831 37.7119C29.3843 38.312 29.9434 38.7681 30.479 39.104C28.8643 39.2881 26.1699 39.3281 24.3262 37.8398ZM26.3433 24.6001C26.3433 24.248 26.6191 23.9678 26.9658 23.9678C27.0444 23.9678 27.1152 23.9839 27.1782 24.0078C27.2651 24.04 27.3438 24.0879 27.4067 24.1602C27.5171 24.272 27.5801 24.4321 27.5801 24.6001C27.5801 24.9521 27.3042 25.2319 26.9575 25.2319C26.6108 25.2319 26.3433 24.9521 26.3433 24.6001ZM32.6064 27.8799C32.2046 28.0479 31.8027 28.1919 31.4165 28.208C30.8179 28.2397 30.1641 27.9922 29.8096 27.688C29.2583 27.2158 28.8643 26.9521 28.6987 26.1279C28.6279 25.7759 28.6675 25.2319 28.7305 24.9199C28.8721 24.248 28.7144 23.8159 28.2495 23.4238C27.8716 23.104 27.3911 23.0161 26.8633 23.0161C26.666 23.0161 26.4849 22.9277 26.3511 22.856C26.1304 22.7441 25.9492 22.4639 26.1226 22.1201C26.1777 22.0078 26.4458 21.7358 26.5088 21.688C27.2256 21.272 28.0527 21.4077 28.8169 21.7197C29.5259 22.0161 30.0615 22.5601 30.834 23.3281C31.6216 24.2559 31.7632 24.5117 32.2124 25.208C32.5669 25.752 32.8901 26.312 33.1104 26.9521C33.2446 27.3521 33.0713 27.6802 32.6064 27.8799Z" fill="#000" fill-opacity="1.000000" fill-rule="nonzero"/>
+</svg>
\ No newline at end of file
diff --git a/apps/web/tests/details-session-lifecycle.e2e.ts b/apps/web/tests/details-session-lifecycle.e2e.ts
index 23a14ef445..8105519338 100644
--- a/apps/web/tests/details-session-lifecycle.e2e.ts
+++ b/apps/web/tests/details-session-lifecycle.e2e.ts
@@ -3,15 +3,19 @@
 // unselected states, and closes it only when a different Session takes ownership.
 import { readFile } from 'node:fs/promises'
 import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
 import type { Browser, Page } from 'playwright'
 import { chromium } from 'playwright'
 import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
 import {
-  acknowledgeReloadConnectionLoss, fixtureUserPrompts, launchWebScaffold, seedSession, watchConsole,
-  webSnapshotMode, type WebScaffold,
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, compareOrRefreshGolden,
+  fixtureUserPrompts, launchWebScaffold, seedSession, watchConsole, webSnapshotMode,
+  type WebScaffold,
 } from './scaffold.ts'
 import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
 
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/details-session-lifecycle', import.meta.url))
+const HANDLES_EXPECTED = join(SNAPSHOT_DIR, 'handles.expected.md')
 const FIXTURE = fileURLToPath(new URL('./snapshots/lifecycle-chrome/session.jsonl', import.meta.url))
 const SEED_FIXTURE = fileURLToPath(new URL('./snapshots/seeded-history/seed.jsonl', import.meta.url))
 const PROMPT = 'Reply with the single word LIGHTHOUSE and stop.'
@@ -25,11 +29,41 @@ async function detailsTrack(page: Page): Promise<number> {
   })
 }
 
+/** First AppFrame grid track in CSS pixels. */
+async function sidebarTrack(page: Page): Promise<number> {
+  return await appFrame(page).evaluate((element) => {
+    const tracks = getComputedStyle(element).gridTemplateColumns.split(' ')
+    return Number.parseFloat(tracks[0] ?? 'NaN')
+  })
+}
+
 /** AppFrame is the only product element with an inline grid track template. */
 function appFrame(page: Page) {
   return page.locator('[style*="grid-template-columns"]').first()
 }
 
+/** Render the two boundary affordances without platform-dependent coordinates. */
+async function handleSnapshot(page: Page): Promise<string> {
+  const handles = await page.locator('[class*="handle"]').evaluateAll(elements =>
+    elements.map(element => ({
+      side: element.getAttribute('data-side'),
+      cursor: getComputedStyle(element).cursor,
+      pillGenerated: getComputedStyle(element, '::after').content !== 'none',
+    })))
+  return [
+    '# AppFrame drag handles',
+    '',
+    ...handles.flatMap(handle => [
+      `## ${handle.side}`,
+      '',
+      '- hit strip present: true',
+      `- cursor: ${handle.cursor}`,
+      `- pill generated: ${String(handle.pillGenerated)}`,
+      '',
+    ]),
+  ].join('\n').trimEnd()
+}
+
 describe.skipIf(MODE === 'record')('web e2e: details panel follows the current Session lifecycle', () => {
   let scaffold: WebScaffold
   let browser: Browser
@@ -65,6 +99,18 @@ describe.skipIf(MODE === 'record')('web e2e: details panel follows the current S
 
     await expect.poll(() => detailsTrack(page), { timeout: 5_000 }).toBe(0)
     expect(await page.getByText('详情', { exact: true }).isVisible()).toBe(false)
+    await compareOrRefreshGolden(HANDLES_EXPECTED, await handleSnapshot(page), MODE)
+
+    const sidebarBefore = await sidebarTrack(page)
+    const sidebarHandle = page.locator('[data-side="sidebar"]')
+    const sidebarBox = await sidebarHandle.boundingBox()
+    expect(sidebarBox).not.toBeNull()
+    const dragStartX = sidebarBox!.x + sidebarBox!.width / 2
+    await page.mouse.move(dragStartX, sidebarBox!.y + 200)
+    await page.mouse.down()
+    await page.mouse.move(dragStartX + 70, sidebarBox!.y + 200, { steps: 6 })
+    await page.mouse.up()
+    await expect.poll(() => sidebarTrack(page), { timeout: 5_000 }).toBe(sidebarBefore + 70)
 
     const warningStart = tripwire.warnings.length
     await page.reload({ waitUntil: 'load' })
@@ -101,5 +147,6 @@ describe.skipIf(MODE === 'record')('web e2e: details panel follows the current S
     await expect.poll(() => detailsTrack(page), { timeout: 5_000 }).toBe(0)
     expect(tripwire.pageErrors).toEqual([])
     expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['handles.expected.md'])
   }, 90_000)
 })
diff --git a/apps/web/tests/message-actions.e2e.ts b/apps/web/tests/message-actions.e2e.ts
index 650c089d32..3af8c14b58 100644
--- a/apps/web/tests/message-actions.e2e.ts
+++ b/apps/web/tests/message-actions.e2e.ts
@@ -64,8 +64,8 @@ describe('web e2e: message IconActions and clocks on settled history', () => {
     await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBe(1)
 
     // Focus-reveal the footers (hover:hover keeps them opacity-hidden until
-    // hover/focus-within). User has three actions; each finalized assistant
-    // text node has copy + branch.
+    // hover/focus-within). User has three actions; each turn's last content
+    // assistant has copy + branch.
     const copyButtons = page.getByRole('button', { name: '复制' })
     await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
     await copyButtons.first().focus()
diff --git a/apps/web/tests/models-settings.e2e.ts b/apps/web/tests/models-settings.e2e.ts
new file mode 100644
index 0000000000..28c423b0a0
--- /dev/null
+++ b/apps/web/tests/models-settings.e2e.ts
@@ -0,0 +1,119 @@
+// Web e2e scenario: the Models settings page end to end through the real
+// wire — the add card offers the dormant pi-ai catalog, typing an API key
+// stores it write-only under the derived reference (`MINIMAX_CN_API_KEY`)
+// while the settings document records only that reference, and the saved
+// route registers live (the row's 已启用 badge is the topology invalidation
+// landing). The customized-settings fold writes the curated reasoning field
+// as a merge patch. Zero model calls: configuration is pure
+// settings/credentials/llm-domain traffic, so there is no fixture and a
+// stray stream would fail loud on the open seam. The provider under test is
+// minimax-cn so a developer's real ANTHROPIC/OPENAI environment keys can
+// never shadow the derived reference.
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/models-settings', import.meta.url))
+const EMPTY_EXPECTED = join(SNAPSHOT_DIR, 'empty.expected.md')
+const CONFIGURED_EXPECTED = join(SNAPSHOT_DIR, 'configured.expected.md')
+const MODE = webSnapshotMode()
+
+describe('web e2e: Models settings page configures a dormant provider', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('opens the add card over the dormant directory vocabulary', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-empty'))
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.waitFor({ timeout: 10_000 })
+    await dialog.getByRole('button', { name: '模型' }).click()
+    await dialog.getByText('填入各提供方的 API 密钥即可使用其模型。').waitFor({ timeout: 10_000 })
+    // The dormant pi-ai adapter contributes its whole installed catalog; no
+    // provider is configured yet, so the page is one add button.
+    const add = dialog.getByRole('button', { name: '+ 添加提供方' })
+    await add.waitFor({ timeout: 10_000 })
+    // The button enables once the dormant catalog lands in the join.
+    await expect.poll(async () => add.isEnabled(), { timeout: 10_000 }).toBe(true)
+    await add.click()
+    const pick = dialog.getByLabel('提供方')
+    await pick.waitFor({ timeout: 10_000 })
+    await expect.poll(async () => pick.locator('option').count(), { timeout: 10_000 }).toBeGreaterThan(30)
+    const options = await pick.locator('option').allTextContents()
+    expect(options).toContain('anthropic')
+    expect(options).toContain('minimax-cn')
+    await pick.selectOption('minimax-cn')
+    await dialog.getByLabel('API 密钥').waitFor({ timeout: 10_000 })
+    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(EMPTY_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
+  it('stores the key under the derived reference and the route registers live', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-add'))
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.getByLabel('API 密钥').fill('sk-e2e-minimax')
+    await dialog.getByRole('button', { name: '保存', exact: true }).click()
+    // The profile lands in settings.yaml with only the derived reference, the
+    // key value lands in the harness home's .env, the dormant route
+    // registers, and the topology frame invalidates the page into the row.
+    const row = dialog.getByText('minimax-cn', { exact: true }).first()
+    await row.waitFor({ timeout: 10_000 })
+    await dialog.getByText('已启用').waitFor({ timeout: 10_000 })
+    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
+    expect(document).toContain('minimax-cn:')
+    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
+    expect(document).not.toContain('sk-e2e-minimax')
+    const stored = await readFile(join(scaffold.harnessHome, '.env'), 'utf8')
+    expect(stored).toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
+    expect(await page.content()).not.toContain('sk-e2e-minimax')
+  }, 60_000)
+
+  it('applies a customized-settings field as a merge patch', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-customized'))
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.getByRole('button', { name: '编辑' }).click()
+    await dialog.getByText('自定义设置').click()
+    const effort = dialog.getByLabel('推理强度')
+    await effort.waitFor({ timeout: 10_000 })
+    await effort.selectOption('high')
+    await dialog.getByRole('button', { name: '保存', exact: true }).click()
+    // The editor closes back to the row; the fold's write merged into the
+    // stored profile beside the reference.
+    await expect.poll(async () => dialog.getByLabel('推理强度').count(), { timeout: 10_000 }).toBe(0)
+    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
+    expect(document).toContain('reasoning: high')
+    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
+    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(CONFIGURED_EXPECTED, snapshot, MODE)
+    await page.keyboard.press('Escape')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['configured.expected.md', 'empty.expected.md'])
+  })
+})
diff --git a/apps/web/tests/onboarding-deepseek-config.e2e.ts b/apps/web/tests/onboarding-deepseek-config.e2e.ts
new file mode 100644
index 0000000000..62dd129982
--- /dev/null
+++ b/apps/web/tests/onboarding-deepseek-config.e2e.ts
@@ -0,0 +1,91 @@
+// Keyless browser e2e: the shipped DeepSeek adapter stays mounted while its
+// credential is absent, onboarding routes to the real Models editor, and its
+// write lands in an isolated harness home without a reload or model call.
+import { randomBytes } from 'node:crypto'
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/onboarding-deepseek-config', import.meta.url))
+const MISSING_EXPECTED = join(SNAPSHOT_DIR, 'missing.expected.md')
+const MODE = webSnapshotMode()
+
+describe.skipIf(MODE === 'record')('web e2e: first-run DeepSeek credential setup', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const browserConsole: string[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({ deepSeekMissingCredential: true })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1440, height: 960 } })
+    tripwire = watchConsole(page)
+    page.on('console', message => browserConsole.push(message.text()))
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('stores a key write-only and observes configured state without restarting', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-onboarding-deepseek-config'))
+    const dialog = page.getByRole('dialog', { name: '添加一个 API Key 开始使用' })
+    await dialog.waitFor({ timeout: 15_000 })
+    expect(await dialog.getByRole('textbox').count()).toBe(0)
+    const initial = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(MISSING_EXPECTED, initial, MODE)
+
+    await dialog.getByRole('button', { name: '前往配置' }).click()
+    await dialog.waitFor({ state: 'detached', timeout: 15_000 })
+    const settings = page.getByRole('dialog', { name: '设置' })
+    await settings.waitFor({ timeout: 10_000 })
+    const keyInput = settings.getByLabel('API 密钥', { exact: true })
+    await keyInput.waitFor({ timeout: 10_000 })
+
+    const secret = `dsh_onboarding_${randomBytes(12).toString('hex')}`
+    await keyInput.fill(secret)
+    await settings.getByRole('button', { name: '保存', exact: true }).click()
+    await keyInput.waitFor({ state: 'detached', timeout: 15_000 })
+
+    const stored = await readFile(join(scaffold.harnessHome, '.env'), 'utf8')
+    expect(stored.includes(`DEEPSEEK_API_KEY=${secret}`)).toBe(true)
+    expect((await page.content()).includes(secret)).toBe(false)
+    expect((await page.locator('body').ariaSnapshot()).includes(secret)).toBe(false)
+    expect(browserConsole.some(line => line.includes(secret))).toBe(false)
+
+    // The same open Models surface reuses the refreshed join and exposes the
+    // configured write-only placeholder without a reload.
+    const deepSeekRow = settings.getByText('DeepSeek', { exact: true }).first()
+    await deepSeekRow.waitFor({ timeout: 10_000 })
+    await deepSeekRow.locator('xpath=ancestor::li').getByRole('button', { name: '编辑' }).click()
+    const configuredInput = settings.getByLabel('API 密钥', { exact: true })
+    await configuredInput.waitFor({ timeout: 10_000 })
+    await expect.poll(
+      () => configuredInput.getAttribute('placeholder'),
+      { timeout: 10_000 },
+    ).toBe('已配置——输入新值可替换')
+
+    expect((await page.content()).includes(secret)).toBe(false)
+    expect((await page.locator('body').ariaSnapshot()).includes(secret)).toBe(false)
+    expect(browserConsole.some(line => line.includes(secret))).toBe(false)
+    expect(tripwire.warnings).toEqual([])
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['missing.expected.md'])
+  })
+})
diff --git a/apps/web/tests/scaffold.ts b/apps/web/tests/scaffold.ts
index fa4e28433b..0d53815e09 100644
--- a/apps/web/tests/scaffold.ts
+++ b/apps/web/tests/scaffold.ts
@@ -4,17 +4,19 @@
 // the vendored Loader (the same include boot AppCLIEntry drives), patched the
 // snapshot way — so a real chromium exercises the real HTTP/SSE wire, the
 // api-gateway, agent loop, tools, and persistence. Modes ride $DSH_SNAPSHOT:
-// replay (default, keyless: llm-deepseek row disabled, dsh-llm-replay row
-// inserted in providers mode), record (real adapter + key, harvests fixtures
-// from live session memory), refresh (keyless replay that rewrites goldens).
+// replay (default, keyless: normally disables the llm-deepseek row and
+// inserts dsh-llm-replay in providers mode), record (real adapter + key,
+// harvests fixtures from live session memory), refresh (keyless replay that
+// rewrites goldens). A first-run option keeps the real adapter mounted while
+// masking its credential, without making a model call.
 //
 // Composition divergences from `dsh web`, all deliberate, all via include
 // patches after the shipped surface overlay: temp persistenceRoot; local skill
 // roots confined to the temp workspace; workspace-context disabled (recorded
 // fixtures must not embed this repo's AGENTS.md); session-title-llm disabled
 // (its fire-and-forget title call would race the loop for the session's replay
-// cursor); webserver pinned to port 0 with the built dist; keyless modes
-// disable llm-deepseek and fill the open llm seam post-boot with
+// cursor); webserver pinned to port 0 with the built dist; ordinary keyless
+// modes disable llm-deepseek and fill the open llm seam post-boot with
 // installLlmReplay on the settled root ctx
 // (the plugin-row path discards the ReplayHandle; the direct install keeps
 // assertConsumed for the teardown fixture-consumption check).
@@ -71,7 +73,7 @@ const WEB_OVERLAY_PATH = join(REPO_ROOT, 'apps/cli/config/web.cordis.yml')
 // post-step pressure check would warn every step). The published
 // contextWindow keeps that pressure path provably inert for small fixtures.
 const REPLAY_PROVIDERS = [{
-  id: 'deepseek',
+  id: 'deepseek-official',
   name: 'DeepSeek',
   models: [{ id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash', contextWindow: 128_000 }],
 }]
@@ -88,6 +90,8 @@ export interface WebScaffold {
   workspaceCwd: string
   /** Temp persistence root (seeded sessions land here through the real API). */
   persistenceRoot: string
+  /** Isolated harness home the settings/credentials rows write ($DSH_HOME double). */
+  harnessHome: string
   /** Await a settled turn end: in-process turn/end, then the agent's idle flip (which follows the persistence flush). */
   whenTurnSettled(timeoutMs?: number): Promise<SessionId>
   /** Tear everything down; asserts the replay fixture was fully consumed first (replay/refresh). */
@@ -125,6 +129,12 @@ export interface LaunchOptions {
    * remain reconstructable without making the tools a product default.
    */
   cordisTools?: boolean
+  /**
+   * Keep the shipped DeepSeek adapter mounted while masking the process
+   * environment's DEEPSEEK_API_KEY for this scaffold lifetime. This is the
+   * keyless first-run configuration lane; the default disables the adapter.
+   */
+  deepSeekMissingCredential?: boolean
 }
 
 /** Dispose the booted tree and remove both owned temp roots, reporting every independent cleanup failure. */
@@ -151,7 +161,26 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
       throw new Error('web e2e record mode needs DEEPSEEK_API_KEY (env or repo-root .env)')
     }
   }
+  if (mode === 'record' && options.deepSeekMissingCredential === true) {
+    throw new Error('deepSeekMissingCredential is a keyless replay/refresh option')
+  }
+  const maskDeepSeekCredential = mode !== 'record' && options.deepSeekMissingCredential === true
+  const originalDeepSeekCredential = process.env.DEEPSEEK_API_KEY
+  let credentialEnvironmentRestored = false
+  const restoreCredentialEnvironment = (): void => {
+    if (credentialEnvironmentRestored || !maskDeepSeekCredential) return
+    credentialEnvironmentRestored = true
+    if (originalDeepSeekCredential === undefined) {
+      Reflect.deleteProperty(process.env, 'DEEPSEEK_API_KEY')
+    } else {
+      process.env.DEEPSEEK_API_KEY = originalDeepSeekCredential
+    }
+  }
   const workspaceCwd = await realpath(await mkdtemp(join(tmpdir(), 'dsh-web-e2e-ws-')))
+  // Isolated harness home: the settings/credentials rows resolve $DSH_HOME
+  // paths at load, and an in-process boot must NEVER touch the developer's
+  // real ~/.dsh document or credential file.
+  const harnessHome = join(workspaceCwd, '.dsh-home')
   let persistenceRoot: string
   try {
     persistenceRoot = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sessions-'))
@@ -161,6 +190,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
     if (failures.length > 1) throw new AggregateError(failures, 'web scaffold temp-root setup failed')
     throw error
   }
+  if (maskDeepSeekCredential) Reflect.deleteProperty(process.env, 'DEEPSEEK_API_KEY')
 
   // The include patch set — the same mechanism AppCLIEntry and the ACP
   // snapshot overlay use, applied over the SAME shipped tree (a patch id that
@@ -191,7 +221,13 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
     // workspace, keeping the composition untouched.
     { id: 'workspace-context', disabled: true },
     { id: 'session-title-llm', disabled: true },
+    // Fixture sessions must never leave the process: the shipped row defaults
+    // to the production OTLP endpoint (or whatever DSH_TELEMETRY_OTLP_URL
+    // names in the ambient environment).
+    { id: 'telemetry-otel', disabled: true },
     { id: 'webserver', config: { host: '127.0.0.1', port: 0, distIndex: DIST_INDEX } },
+    { id: 'settings', config: { dshHome: harnessHome } },
+    { id: 'credentials', config: { dshHome: harnessHome } },
     // The shipped directory-picker row is the -auto chooser, which resolves
     // the interaction from the RUNNING host (display, SSH launch, bind). The
     // lane's goldens are interaction-specific (workspace-management drives
@@ -204,7 +240,9 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
     ...options.cordisTools === true
       ? [{ insert: [{ id: 'tool-cordis', name: 'cordis:tool-cordis' }] }]
       : [],
-    ...mode === 'record' ? [] : [{ id: 'llm-deepseek', disabled: true }],
+    ...mode === 'record' || options.deepSeekMissingCredential === true
+      ? []
+      : [{ id: 'llm-deepseek', disabled: true }],
   ]
 
   // Sessions inherit the gateway's process.cwd() default; run the boot from
@@ -233,10 +271,10 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
     }
     port = boundPort
 
-    // Fill the open llm seam on the settled root ctx (llm-deepseek is disabled
-    // in keyless modes; a scenario with no fixture leaves the seam empty so a
-    // stray stream fails loud with NO_ADAPTER). The direct install, unlike the
-    // plugin row, returns the ReplayHandle for the teardown consumption check.
+    // Fill the open llm seam on the settled root ctx. Ordinary keyless modes
+    // disable llm-deepseek; the first-run lane keeps it mounted but has no
+    // replay fixture and never streams. The direct install, unlike the plugin
+    // row, returns the ReplayHandle for the teardown consumption check.
     if (mode !== 'record' && options.replayFixture !== undefined) {
       replayHandle = installLlmReplay(ctx, {
         file: options.replayFixture,
@@ -248,6 +286,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
   } catch (error) {
     if (process.cwd() !== originalCwd) process.chdir(originalCwd)
     const cleanupFailures = await cleanupScaffoldWorld(ctx, workspaceCwd, persistenceRoot)
+    restoreCredentialEnvironment()
     if (cleanupFailures.length > 0) {
       throw new AggregateError([error, ...cleanupFailures], 'web scaffold setup failed and cleanup was incomplete')
     }
@@ -257,6 +296,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
   }
 
   return {
+    harnessHome,
     mode,
     baseUrl: `http://127.0.0.1:${port}`,
     ctx,
@@ -295,7 +335,11 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
       } catch (error) {
         failures.push(error)
       }
-      failures.push(...await cleanupScaffoldWorld(ctx, workspaceCwd, persistenceRoot))
+      try {
+        failures.push(...await cleanupScaffoldWorld(ctx, workspaceCwd, persistenceRoot))
+      } finally {
+        restoreCredentialEnvironment()
+      }
       if (failures.length > 0) throw new AggregateError(failures, 'web scaffold teardown failed')
     },
   }
diff --git a/apps/web/tests/seeded-history.e2e.ts b/apps/web/tests/seeded-history.e2e.ts
index d6a78c9277..4d7825963a 100644
--- a/apps/web/tests/seeded-history.e2e.ts
+++ b/apps/web/tests/seeded-history.e2e.ts
@@ -3,7 +3,9 @@
 // else covers: sidebar cold listing, the implicit resume/attach inside the
 // history RPC, history-page tool views, and the client fold of historical
 // events — with ZERO model calls in replay (no replay fixture; a stray stream
-// fails loud on the open llm seam). The seed is a recorded fixture under the
+// fails loud on the open llm seam). The cold session also carries the one
+// keyless command-row surface: an Access-chip pick runs `/permission` on the
+// host, so the settled row's copy has a golden here. The seed is a recorded fixture under the
 // same record discipline as every other: DSH_SNAPSHOT=record drives the turn
 // live through the composer (real read tool against seeded workspace files)
 // and harvests seed.jsonl; replay/refresh seed it cold and only render.
@@ -24,6 +26,9 @@ import { newEnglishPage, saveFailureShot } from './support.ts'
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/seeded-history', import.meta.url))
 const SEED = fileURLToPath(new URL('./snapshots/seeded-history/seed.jsonl', import.meta.url))
 const UI_EXPECTED = fileURLToPath(new URL('./snapshots/seeded-history/ui.expected.md', import.meta.url))
+// The command-row golden: the same conversation after one /permission switch,
+// which is the only surface that shows a settled command row's copy.
+const COMMAND_ROW_EXPECTED = fileURLToPath(new URL('./snapshots/seeded-history/command-row.expected.md', import.meta.url))
 const MODE = webSnapshotMode()
 const SEED_ID = 'seeded-history-web-e2e'
 
@@ -225,11 +230,33 @@ describe('web e2e: seeded history renders through cold resume', () => {
     await expect.poll(() => page.getByText('a.txt', { exact: false }).count(), { timeout: 5_000 }).toBeGreaterThan(0)
   })
 
+  it.skipIf(MODE === 'record')('an Access-chip switch lands one command row: bare name, non-repeating settlement text', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-seeded-command-row'))
+    // The Access chip submits `/permission <preset>` — a host command with no
+    // model call, so the settled row renders keylessly over this cold history.
+    // The row copy is the assertion: `permission · preset workspace-write`,
+    // where neither half repeats the other (the dispatched `/` and its
+    // argument stay out of the title, and the settlement text never restates
+    // the command's own name).
+    await page.getByRole('button', { name: 'Access mode, current: Danger Full Access' }).click()
+    await page.getByRole('menuitem', { name: 'Workspace Write' }).click()
+    await page.getByRole('button', { name: 'Access mode, current: Workspace Write' }).waitFor({ timeout: 10_000 })
+    // Scoped to the row itself, so unrelated page text that happens to read
+    // `permission` (a future resident slash menu) cannot satisfy or break it.
+    const row = page.locator('[data-variant="others"]').filter({ hasText: 'preset workspace-write' })
+    await expect.poll(() => row.count(), { timeout: 10_000 }).toBe(1)
+    expect(await row.getByText('permission', { exact: true }).count()).toBe(1)
+    expect(await row.getByText('/permission workspace-write', { exact: true }).count()).toBe(0)
+    const snapshot = (await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(COMMAND_ROW_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
   it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', async () => {
     // No replay fixture was installed and the llm seam is open — any stray
     // stream would have failed the turn loudly. Cleanliness pins the wire.
     expect(tripwire.pageErrors).toEqual([])
     expect(tripwire.warnings).toEqual([])
-    await assertFixtureInventory(SNAPSHOT_DIR, ['seed.jsonl', 'ui.expected.md'])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['command-row.expected.md', 'seed.jsonl', 'ui.expected.md'])
   })
 })
diff --git a/apps/web/tests/settings-chrome.e2e.ts b/apps/web/tests/settings-chrome.e2e.ts
index 90f0b3964b..775f1596df 100644
--- a/apps/web/tests/settings-chrome.e2e.ts
+++ b/apps/web/tests/settings-chrome.e2e.ts
@@ -58,7 +58,7 @@ describe('web e2e: settings modal, appearance gesture, language switch', () => {
     // Golden of the freshly opened dialog (default zh, General active).
     const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
     await compareOrRefreshGolden(DIALOG_EXPECTED, snapshot, MODE)
-    // Section switch: aria-current moves; Models is deliberately empty.
+    // Section switch: aria-current moves (the Models page itself has its own scenario file).
     await dialog.getByRole('button', { name: '模型' }).click()
     await expect.poll(() => dialog.getByRole('button', { name: '模型' }).getAttribute('aria-current'), { timeout: 5_000 }).toBe('true')
     expect(await dialog.getByRole('button', { name: '通用设置' }).getAttribute('aria-current')).toBeNull()
diff --git a/apps/web/tests/snapshots/code-mode-round/session.jsonl b/apps/web/tests/snapshots/code-mode-round/session.jsonl
index b49160e3f9..9ff7af0110 100644
--- a/apps/web/tests/snapshots/code-mode-round/session.jsonl
+++ b/apps/web/tests/snapshots/code-mode-round/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785013630399,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785013630411,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785013630411,"data":{"content":[{"type":"text","text":"Using ONE run_code program: run bash `echo CODE_ROUND_OK`, then read the file missing.txt catching its error in the program. Return an object with both outcomes. Then reply DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"1c4a6a0f-a7bd-4642-919d-6ed7395df98b"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785013630411,"data":{"content":[{"type":"text","text":"Using ONE run_code program: run bash `echo CODE_ROUND_OK`, then read the file missing.txt catching its error in the program. Return an object with both outcomes. Then reply DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785013630418,"data":{"title":"Using ONE run_code program: run","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785013630479,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785013630480,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785013630480,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785013631481,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785013631481,"data":{"turn":1,"step":1,"index":0,"dt":[182,27,0,0,1,39,1,0,11,0,0,1,0,25,0,1,0,0,25,28,0,0,0,26,1,0,0,0,0,25,1,0,0,0,0,28,1,0,0,0,23,1,0,1,0,0,25,1,0,0,0,26,0,0,0,26,0,26,0,0,1,25,1,0,0,0,0,25,1,26,0,1,26,29],"texts":["The"," user"," wants"," me"," to"," write"," a"," single"," `","run","_code","`"," program"," that",":\n","1","."," Runs"," bash"," to"," echo"," \"","CODE","_RO","UND","_OK","\"\n","2","."," T","ries"," to"," read"," a"," file"," \"","missing",".txt","\""," and"," catches"," the"," error","\n","3","."," Returns"," an"," object"," with"," both"," outcomes","\n","4","."," They"," also"," want"," me"," to"," reply"," \"","D","ONE","\""," and"," stop"," after","\n\n","Let"," me"," write"," this"," program","."]}}
 {"type":"assistant/chunk","seq":81,"time":1785013632219,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,13 +12,13 @@
 {"type":"assistant/chunk","seq":202,"time":1785013633103,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_6VNoF1gDSerTBKoCfYSH3765","name":"run_code","arguments":"{\"description\": \"Run bash echo and catch missing file read\", \"code\": \"\\nconst bashResult = await tools.bash({\\n  command: \\\"echo CODE_ROUND_OK\\\",\\n  description: \\\"Echo CODE_ROUND_OK\\\"\\n});\\n\\nlet readError = null;\\ntry {\\n  await tools.read({ file_path: \\\"missing.txt\\\" });\\n} catch (e) {\\n  readError = {\\n    toolName: e.toolName,\\n    message: e.message\\n  };\\n}\\n\\nreturn { bash: bashResult.stdout.text.trim(), readError };\\n\"}"}}}}
 {"type":"assistant/chunk","seq":203,"time":1785013633104,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":8082,"outputTokens":235,"cacheReadTokens":384,"reasoningTokens":75}}}}
 {"type":"assistant/chunk","seq":204,"time":1785013633104,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":205,"time":1785013633108,"data":{"turn":1,"step":1,"usage":{"inputTokens":8082,"outputTokens":235,"cacheReadTokens":384,"reasoningTokens":75},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to write a single `run_code` program that:\n1. Runs bash to echo \"CODE_ROUND_OK\"\n2. Tries to read a file \"missing.txt\" and catches the error\n3. Returns an object with both outcomes\n4. They also want me to reply \"DONE\" and stop after\n\nLet me write this program."},{"type":"tool-call","id":"call_00_6VNoF1gDSerTBKoCfYSH3765","name":"run_code","arguments":"{\"description\": \"Run bash echo and catch missing file read\", \"code\": \"\\nconst bashResult = await tools.bash({\\n  command: \\\"echo CODE_ROUND_OK\\\",\\n  description: \\\"Echo CODE_ROUND_OK\\\"\\n});\\n\\nlet readError = null;\\ntry {\\n  await tools.read({ file_path: \\\"missing.txt\\\" });\\n} catch (e) {\\n  readError = {\\n    toolName: e.toolName,\\n    message: e.message\\n  };\\n}\\n\\nreturn { bash: bashResult.stdout.text.trim(), readError };\\n\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"0d217af9-3bb3-425b-b53e-7ab0366f0c66"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
+{"type":"assistant/message","seq":205,"time":1785013633108,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to write a single `run_code` program that:\n1. Runs bash to echo \"CODE_ROUND_OK\"\n2. Tries to read a file \"missing.txt\" and catches the error\n3. Returns an object with both outcomes\n4. They also want me to reply \"DONE\" and stop after\n\nLet me write this program."},{"type":"tool-call","id":"call_00_6VNoF1gDSerTBKoCfYSH3765","name":"run_code","arguments":"{\"description\": \"Run bash echo and catch missing file read\", \"code\": \"\\nconst bashResult = await tools.bash({\\n  command: \\\"echo CODE_ROUND_OK\\\",\\n  description: \\\"Echo CODE_ROUND_OK\\\"\\n});\\n\\nlet readError = null;\\ntry {\\n  await tools.read({ file_path: \\\"missing.txt\\\" });\\n} catch (e) {\\n  readError = {\\n    toolName: e.toolName,\\n    message: e.message\\n  };\\n}\\n\\nreturn { bash: bashResult.stdout.text.trim(), readError };\\n\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":8082,"outputTokens":235,"cacheReadTokens":384,"reasoningTokens":75}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
 {"type":"tool/call","seq":206,"time":1785013633108,"data":{"turn":1,"step":1,"callId":"call_00_6VNoF1gDSerTBKoCfYSH3765","name":"run_code","arguments":"{\"description\": \"Run bash echo and catch missing file read\", \"code\": \"\\nconst bashResult = await tools.bash({\\n  command: \\\"echo CODE_ROUND_OK\\\",\\n  description: \\\"Echo CODE_ROUND_OK\\\"\\n});\\n\\nlet readError = null;\\ntry {\\n  await tools.read({ file_path: \\\"missing.txt\\\" });\\n} catch (e) {\\n  readError = {\\n    toolName: e.toolName,\\n    message: e.message\\n  };\\n}\\n\\nreturn { bash: bashResult.stdout.text.trim(), readError };\\n\"}"}}
 {"type":"tool/code-dispatch-start","seq":207,"time":1785013633173,"data":{"parentCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765","subCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765:code:1","name":"bash","arguments":{"command":"echo CODE_ROUND_OK","description":"Echo CODE_ROUND_OK"}}}
 {"type":"tool/code-dispatch","seq":208,"time":1785013633196,"data":{"parentCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765","subCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765:code:1","name":"bash","arguments":{"command":"echo CODE_ROUND_OK","description":"Echo CODE_ROUND_OK"},"isError":false,"content":[{"type":"text","text":"CODE_ROUND_OK\n"}]}}
 {"type":"tool/code-dispatch-start","seq":209,"time":1785013633197,"data":{"parentCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765","subCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765:code:2","name":"read","arguments":{"file_path":"missing.txt"}}}
 {"type":"tool/code-dispatch","seq":210,"time":1785013633198,"data":{"parentCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765","subCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765:code:2","name":"read","arguments":{"file_path":"missing.txt"},"isError":true,"content":[{"type":"text","text":"Error: cannot read \"{{cwd}}/workspace/missing.txt\": not found"}]}}
-{"type":"tool/result","seq":211,"time":1785013633201,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_6VNoF1gDSerTBKoCfYSH3765"},"content":[{"type":"tool-result","toolCallId":"call_00_6VNoF1gDSerTBKoCfYSH3765","content":[{"type":"text","text":"{\n  \"bash\": \"CODE_ROUND_OK\",\n  \"readError\": {\n    \"toolName\": \"read\",\n    \"message\": \"cannot read \\\"{{cwd}}/workspace/missing.txt\\\": not found\"\n  }\n}"}],"isError":false}],"role":"user","id":"1580d4a8-5760-415f-984f-f93927271d3f"}},"sourceEventSeqs":[206],"surfaceOp":"append"}
+{"type":"tool/result","seq":211,"time":1785013633201,"data":{"turn":1,"step":1,"callId":"call_00_6VNoF1gDSerTBKoCfYSH3765","content":[{"type":"text","text":"{\n  \"bash\": \"CODE_ROUND_OK\",\n  \"readError\": {\n    \"toolName\": \"read\",\n    \"message\": \"cannot read \\\"{{cwd}}/workspace/missing.txt\\\": not found\"\n  }\n}"}],"isError":false},"sourceEventSeqs":[206],"surfaceOp":"append"}
 {"type":"step/end","seq":212,"time":1785013633204,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":213,"time":1785013633207,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":214,"time":1785013633985,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -30,6 +30,6 @@
 {"type":"assistant/chunk","seq":233,"time":1785013634223,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":234,"time":1785013634223,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":196,"outputTokens":17,"cacheReadTokens":8576,"reasoningTokens":14}}}}
 {"type":"assistant/chunk","seq":235,"time":1785013634223,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":236,"time":1785013634224,"data":{"turn":1,"step":2,"usage":{"inputTokens":196,"outputTokens":17,"cacheReadTokens":8576,"reasoningTokens":14},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The program ran successfully. Let me now reply DONE as instructed."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3037ec34-6c2a-4e01-91eb-a0ef89ce0d15"}},"sourceEventSeqs":[214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235],"surfaceOp":"append"}
+{"type":"assistant/message","seq":236,"time":1785013634224,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The program ran successfully. Let me now reply DONE as instructed."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":196,"outputTokens":17,"cacheReadTokens":8576,"reasoningTokens":14}},"sourceEventSeqs":[214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235],"surfaceOp":"append"}
 {"type":"step/end","seq":237,"time":1785013634225,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":238,"time":1785013634225,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/cordis-tool-round/session.jsonl b/apps/web/tests/snapshots/cordis-tool-round/session.jsonl
index 558f194795..cc00b24ebf 100644
--- a/apps/web/tests/snapshots/cordis-tool-round/session.jsonl
+++ b/apps/web/tests/snapshots/cordis-tool-round/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785157562825,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785157562881,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785157562882,"data":{"content":[{"type":"text","text":"Use only Cordis tools. First call cordis_inspect with what \"temporary\". Then call cordis_mount with this exact code: \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\". Read its returned id and call cordis_unmount with that exact id. After all three calls succeed, reply exactly CORDIS_UI_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"27e1fc72-20d0-4875-bf5b-d34750441f30"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785157562882,"data":{"content":[{"type":"text","text":"Use only Cordis tools. First call cordis_inspect with what \"temporary\". Then call cordis_mount with this exact code: \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\". Read its returned id and call cordis_unmount with that exact id. After all three calls succeed, reply exactly CORDIS_UI_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785157562883,"data":{"title":"Use only Cordis tools. First","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785157562937,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785157562938,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash","reasoningEffort":"high"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785157562938,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","reasoningEffort":"high"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785157564667,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785157564667,"data":{"turn":1,"step":1,"index":0,"dt":[115,31,3,0,1,0,1,21,1,0,0,0,1,23,0,1,0,0,0,24,2,1,0,0,0,28,2,0,0,0,1,23,2,22,2,1,25,2,0,0,25,27,1,1,0,0,28,2,0,0,0,0,32,1,31,1,0,0,0,9,29,3,0,0,0,1,23,1,0,0,0,27,4,0,0,0,23,2,0,0],"texts":["The"," user"," wants"," me"," to",":\n","1","."," Call"," `","cord","is","_in","spect","`"," with"," `","what",":"," \"","t","emporary","\"`\n","2","."," Call"," `","cord","is","_m","ount","`"," with"," the"," exact"," code"," provided","\n","3","."," Read"," the"," returned"," id"," and"," call"," `","cord","is","_un","mount","`"," with"," that"," exact"," id","\n","4","."," Reply"," exactly"," \"","C","ORD","IS","_","UI","_D","ONE","\""," and"," stop","\n\n","Let"," me"," start"," with"," step"," ","1","."]}}
 {"type":"assistant/chunk","seq":87,"time":1785157565360,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,9 +12,9 @@
 {"type":"assistant/chunk","seq":100,"time":1785157565491,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_KZk918WtlKan9pHMULIT8794","name":"cordis_inspect","arguments":"{\"what\": \"temporary\"}"}}}}
 {"type":"assistant/chunk","seq":101,"time":1785157565491,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":15137,"outputTokens":128,"cacheReadTokens":1280,"reasoningTokens":81}}}}
 {"type":"assistant/chunk","seq":102,"time":1785157565491,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":103,"time":1785157565495,"data":{"turn":1,"step":1,"usage":{"inputTokens":15137,"outputTokens":128,"cacheReadTokens":1280,"reasoningTokens":81},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Call `cordis_inspect` with `what: \"temporary\"`\n2. Call `cordis_mount` with the exact code provided\n3. Read the returned id and call `cordis_unmount` with that exact id\n4. Reply exactly \"CORDIS_UI_DONE\" and stop\n\nLet me start with step 1."},{"type":"tool-call","id":"call_00_KZk918WtlKan9pHMULIT8794","name":"cordis_inspect","arguments":"{\"what\": \"temporary\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"a3b56157-c6fd-43f8-bc8a-0e2a0c99a8b5"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102],"surfaceOp":"append"}
+{"type":"assistant/message","seq":103,"time":1785157565495,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to:\n1. Call `cordis_inspect` with `what: \"temporary\"`\n2. Call `cordis_mount` with the exact code provided\n3. Read the returned id and call `cordis_unmount` with that exact id\n4. Reply exactly \"CORDIS_UI_DONE\" and stop\n\nLet me start with step 1."},{"type":"tool-call","id":"call_00_KZk918WtlKan9pHMULIT8794","name":"cordis_inspect","arguments":"{\"what\": \"temporary\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":15137,"outputTokens":128,"cacheReadTokens":1280,"reasoningTokens":81}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102],"surfaceOp":"append"}
 {"type":"tool/call","seq":104,"time":1785157565496,"data":{"turn":1,"step":1,"callId":"call_00_KZk918WtlKan9pHMULIT8794","name":"cordis_inspect","arguments":"{\"what\": \"temporary\"}"}}
-{"type":"tool/result","seq":105,"time":1785157565500,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_KZk918WtlKan9pHMULIT8794"},"content":[{"type":"tool-result","toolCallId":"call_00_KZk918WtlKan9pHMULIT8794","content":[{"type":"text","text":"## Temporary Plugins\nNo temporary Plugins are running. Temporary Plugins created with cordis_mount disappear when DSH restarts."}],"isError":false}],"role":"user","id":"95ae124e-f065-4aab-a9c5-bd33c7eafff1"}},"sourceEventSeqs":[104],"surfaceOp":"append"}
+{"type":"tool/result","seq":105,"time":1785157565500,"data":{"turn":1,"step":1,"callId":"call_00_KZk918WtlKan9pHMULIT8794","content":[{"type":"text","text":"## Temporary Plugins\nNo temporary Plugins are running. Temporary Plugins created with cordis_mount disappear when DSH restarts."}],"isError":false},"sourceEventSeqs":[104],"surfaceOp":"append"}
 {"type":"step/end","seq":106,"time":1785157565503,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":107,"time":1785157565503,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":108,"time":1785157566524,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -25,9 +25,9 @@
 {"type":"assistant/chunk","seq":157,"time":1785157567041,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_OyrlxqqpnvzTe11sN5Oy2361","name":"cordis_mount","arguments":"{\"code\": \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\"}"}}}}
 {"type":"assistant/chunk","seq":158,"time":1785157567042,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":72,"outputTokens":82,"cacheReadTokens":16512,"reasoningTokens":22}}}}
 {"type":"assistant/chunk","seq":159,"time":1785157567042,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":160,"time":1785157567043,"data":{"turn":1,"step":2,"usage":{"inputTokens":72,"outputTokens":82,"cacheReadTokens":16512,"reasoningTokens":22},"message":{"role":"assistant","content":[{"type":"reasoning","text":"Good, no temporary plugins running. Now step 2: call cordis_mount with the exact code."},{"type":"tool-call","id":"call_00_OyrlxqqpnvzTe11sN5Oy2361","name":"cordis_mount","arguments":"{\"code\": \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b90af675-f604-4fb4-9c27-89c91b27f4ce"}},"sourceEventSeqs":[108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159],"surfaceOp":"append"}
+{"type":"assistant/message","seq":160,"time":1785157567043,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"Good, no temporary plugins running. Now step 2: call cordis_mount with the exact code."},{"type":"tool-call","id":"call_00_OyrlxqqpnvzTe11sN5Oy2361","name":"cordis_mount","arguments":"{\"code\": \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":72,"outputTokens":82,"cacheReadTokens":16512,"reasoningTokens":22}},"sourceEventSeqs":[108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159],"surfaceOp":"append"}
 {"type":"tool/call","seq":161,"time":1785157567043,"data":{"turn":1,"step":2,"callId":"call_00_OyrlxqqpnvzTe11sN5Oy2361","name":"cordis_mount","arguments":"{\"code\": \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\"}"}}
-{"type":"tool/result","seq":162,"time":1785157567049,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_00_OyrlxqqpnvzTe11sN5Oy2361"},"content":[{"type":"tool-result","toolCallId":"call_00_OyrlxqqpnvzTe11sN5Oy2361","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-noop\"; available until unmounted or DSH restarts)."}],"isError":false}],"role":"user","id":"3148fc0a-f511-4b72-abd5-d184e974cd49"}},"sourceEventSeqs":[161],"surfaceOp":"append"}
+{"type":"tool/result","seq":162,"time":1785157567049,"data":{"turn":1,"step":2,"callId":"call_00_OyrlxqqpnvzTe11sN5Oy2361","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-noop\"; available until unmounted or DSH restarts)."}],"isError":false},"sourceEventSeqs":[161],"surfaceOp":"append"}
 {"type":"step/end","seq":163,"time":1785157567050,"data":{"turn":1,"step":2}}
 {"type":"step/start","seq":164,"time":1785157567050,"data":{"turn":1,"step":3}}
 {"type":"assistant/chunk","seq":165,"time":1785157567835,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -38,9 +38,9 @@
 {"type":"assistant/chunk","seq":204,"time":1785157568279,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_e38S6zeYdZGvbhecUCil6659","name":"cordis_unmount","arguments":"{\"id\": \"dyn-1\"}"}}}}
 {"type":"assistant/chunk","seq":205,"time":1785157568279,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":63,"outputTokens":72,"cacheReadTokens":16640,"reasoningTokens":23}}}}
 {"type":"assistant/chunk","seq":206,"time":1785157568279,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":207,"time":1785157568280,"data":{"turn":1,"step":3,"usage":{"inputTokens":63,"outputTokens":72,"cacheReadTokens":16640,"reasoningTokens":23},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The id is \"dyn-1\". Now step 3: call cordis_unmount with that id."},{"type":"tool-call","id":"call_00_e38S6zeYdZGvbhecUCil6659","name":"cordis_unmount","arguments":"{\"id\": \"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"cdc5b840-4302-486a-8065-fa59bf13f2d9"}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206],"surfaceOp":"append"}
+{"type":"assistant/message","seq":207,"time":1785157568280,"data":{"turn":1,"step":3,"content":[{"type":"reasoning","text":"The id is \"dyn-1\". Now step 3: call cordis_unmount with that id."},{"type":"tool-call","id":"call_00_e38S6zeYdZGvbhecUCil6659","name":"cordis_unmount","arguments":"{\"id\": \"dyn-1\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":63,"outputTokens":72,"cacheReadTokens":16640,"reasoningTokens":23}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206],"surfaceOp":"append"}
 {"type":"tool/call","seq":208,"time":1785157568280,"data":{"turn":1,"step":3,"callId":"call_00_e38S6zeYdZGvbhecUCil6659","name":"cordis_unmount","arguments":"{\"id\": \"dyn-1\"}"}}
-{"type":"tool/result","seq":209,"time":1785157568281,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_00_e38S6zeYdZGvbhecUCil6659"},"content":[{"type":"tool-result","toolCallId":"call_00_e38S6zeYdZGvbhecUCil6659","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"758a7b27-56e3-4997-8c4d-effc699cc5e6"}},"sourceEventSeqs":[208],"surfaceOp":"append"}
+{"type":"tool/result","seq":209,"time":1785157568281,"data":{"turn":1,"step":3,"callId":"call_00_e38S6zeYdZGvbhecUCil6659","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false},"sourceEventSeqs":[208],"surfaceOp":"append"}
 {"type":"step/end","seq":210,"time":1785157568282,"data":{"turn":1,"step":3}}
 {"type":"step/start","seq":211,"time":1785157568282,"data":{"turn":1,"step":4}}
 {"type":"assistant/chunk","seq":212,"time":1785157569185,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -51,6 +51,6 @@
 {"type":"assistant/chunk","seq":244,"time":1785157569551,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"CORDIS_UI_DONE"}}}}
 {"type":"assistant/chunk","seq":245,"time":1785157569551,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22}}}}
 {"type":"assistant/chunk","seq":246,"time":1785157569551,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":247,"time":1785157569553,"data":{"turn":1,"step":4,"usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22},"message":{"role":"assistant","content":[{"type":"reasoning","text":"All three calls succeeded. I should now reply exactly \"CORDIS_UI_DONE\" and stop."},{"type":"text","text":"CORDIS_UI_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"71540121-7bf6-410e-975c-f5ea99d8175a"}},"sourceEventSeqs":[212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246],"surfaceOp":"append"}
+{"type":"assistant/message","seq":247,"time":1785157569553,"data":{"turn":1,"step":4,"content":[{"type":"reasoning","text":"All three calls succeeded. I should now reply exactly \"CORDIS_UI_DONE\" and stop."},{"type":"text","text":"CORDIS_UI_DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22}},"sourceEventSeqs":[212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246],"surfaceOp":"append"}
 {"type":"step/end","seq":248,"time":1785157569554,"data":{"turn":1,"step":4}}
 {"type":"turn/end","seq":249,"time":1785157569554,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/details-session-lifecycle/handles.expected.md b/apps/web/tests/snapshots/details-session-lifecycle/handles.expected.md
new file mode 100644
index 0000000000..aa865c4ad4
--- /dev/null
+++ b/apps/web/tests/snapshots/details-session-lifecycle/handles.expected.md
@@ -0,0 +1,7 @@
+# AppFrame drag handles
+
+## sidebar
+
+- hit strip present: true
+- cursor: col-resize
+- pill generated: false
diff --git a/apps/web/tests/snapshots/fresh-round-trip/session.jsonl b/apps/web/tests/snapshots/fresh-round-trip/session.jsonl
index 202b73f83a..3aa97623f1 100644
--- a/apps/web/tests/snapshots/fresh-round-trip/session.jsonl
+++ b/apps/web/tests/snapshots/fresh-round-trip/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1784973850091,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1784973850102,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1784973850103,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo WEB_E2E_OK. Then reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"2c594e5a-bbcc-4c64-b5ee-8e84eb5dd949"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1784973850103,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo WEB_E2E_OK. Then reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784973850105,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784973850164,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784973850165,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784973850165,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784973850888,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1784973850889,"data":{"turn":1,"step":1,"index":0,"dt":[199,1,0,0,0,18,1,0,0,0,0,27,0,1,0,0],"texts":["The"," user"," wants"," me"," to"," run"," a"," simple"," bash"," command"," and"," reply"," with"," \"","D","ONE","\"."]}}
 {"type":"assistant/chunk","seq":23,"time":1784973851217,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,9 +12,9 @@
 {"type":"assistant/chunk","seq":52,"time":1784973851493,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_BYXlxjFaalMg95YVqEeF2495","name":"bash","arguments":"{\"command\": \"echo WEB_E2E_OK\", \"description\": \"Echo the test string\"}"}}}}
 {"type":"assistant/chunk","seq":53,"time":1784973851493,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":122,"outputTokens":85,"cacheReadTokens":7680,"reasoningTokens":17}}}}
 {"type":"assistant/chunk","seq":54,"time":1784973851493,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":55,"time":1784973851498,"data":{"turn":1,"step":1,"usage":{"inputTokens":122,"outputTokens":85,"cacheReadTokens":7680,"reasoningTokens":17},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and reply with \"DONE\"."},{"type":"tool-call","id":"call_00_BYXlxjFaalMg95YVqEeF2495","name":"bash","arguments":"{\"command\": \"echo WEB_E2E_OK\", \"description\": \"Echo the test string\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"e5d8d5fb-f555-4fda-948f-9ab178145929"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54],"surfaceOp":"append"}
+{"type":"assistant/message","seq":55,"time":1784973851498,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and reply with \"DONE\"."},{"type":"tool-call","id":"call_00_BYXlxjFaalMg95YVqEeF2495","name":"bash","arguments":"{\"command\": \"echo WEB_E2E_OK\", \"description\": \"Echo the test string\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":122,"outputTokens":85,"cacheReadTokens":7680,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54],"surfaceOp":"append"}
 {"type":"tool/call","seq":56,"time":1784973851499,"data":{"turn":1,"step":1,"callId":"call_00_BYXlxjFaalMg95YVqEeF2495","name":"bash","arguments":"{\"command\": \"echo WEB_E2E_OK\", \"description\": \"Echo the test string\"}"}}
-{"type":"tool/result","seq":57,"time":1784973851515,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_BYXlxjFaalMg95YVqEeF2495"},"content":[{"type":"tool-result","toolCallId":"call_00_BYXlxjFaalMg95YVqEeF2495","content":[{"type":"text","text":"WEB_E2E_OK\n"}],"isError":false}],"role":"user","id":"215febf9-ff3c-42b8-93b7-27ce1505c1c2"}},"sourceEventSeqs":[56],"surfaceOp":"append"}
+{"type":"tool/result","seq":57,"time":1784973851515,"data":{"turn":1,"step":1,"callId":"call_00_BYXlxjFaalMg95YVqEeF2495","content":[{"type":"text","text":"WEB_E2E_OK\n"}],"isError":false},"sourceEventSeqs":[56],"surfaceOp":"append"}
 {"type":"step/end","seq":58,"time":1784973851517,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":59,"time":1784973851518,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":60,"time":1784973852194,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":88,"time":1784973852460,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":89,"time":1784973852460,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":97,"outputTokens":26,"cacheReadTokens":7808,"reasoningTokens":23}}}}
 {"type":"assistant/chunk","seq":90,"time":1784973852460,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":91,"time":1784973852461,"data":{"turn":1,"step":2,"usage":{"inputTokens":97,"outputTokens":26,"cacheReadTokens":7808,"reasoningTokens":23},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command executed successfully and output \"WEB_E2E_OK\". I just need to reply with \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"61e83a98-18a9-4f1f-9151-c8783cc39901"}},"sourceEventSeqs":[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],"surfaceOp":"append"}
+{"type":"assistant/message","seq":91,"time":1784973852461,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The command executed successfully and output \"WEB_E2E_OK\". I just need to reply with \"DONE\"."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":97,"outputTokens":26,"cacheReadTokens":7808,"reasoningTokens":23}},"sourceEventSeqs":[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],"surfaceOp":"append"}
 {"type":"step/end","seq":92,"time":1784973852461,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":93,"time":1784973852462,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/lifecycle-chrome/session.jsonl b/apps/web/tests/snapshots/lifecycle-chrome/session.jsonl
index a168f82d9e..d528f36c0e 100644
--- a/apps/web/tests/snapshots/lifecycle-chrome/session.jsonl
+++ b/apps/web/tests/snapshots/lifecycle-chrome/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785015039278,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785015039291,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785015039292,"data":{"content":[{"type":"text","text":"Reply with the single word LIGHTHOUSE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"ee28d2ee-08b2-4ed7-a1e9-84865f55e2af"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785015039292,"data":{"content":[{"type":"text","text":"Reply with the single word LIGHTHOUSE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785015039294,"data":{"title":"Reply with the single word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785015039362,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785015039363,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785015039363,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785015039930,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785015039930,"data":{"turn":1,"step":1,"index":0,"dt":[162,28,1,0,0,46,1,0,0,0,11,0,0,30],"texts":["The"," user"," wants"," me"," to"," reply"," with"," a"," single"," word","."," Let"," me"," comply","."]}}
 {"type":"assistant/chunk","seq":21,"time":1785015040209,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":28,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"LIGHTHOUSE"}}}}
 {"type":"assistant/chunk","seq":29,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15}}}}
 {"type":"assistant/chunk","seq":30,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":31,"time":1785015040244,"data":{"turn":1,"step":1,"usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."},{"type":"text","text":"LIGHTHOUSE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"2101eadc-3475-4c77-ae0a-0107b12c34bc"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
+{"type":"assistant/message","seq":31,"time":1785015040244,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."},{"type":"text","text":"LIGHTHOUSE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
 {"type":"step/end","seq":32,"time":1785015040246,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":33,"time":1785015040247,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/live-interactions/session.jsonl b/apps/web/tests/snapshots/live-interactions/session.jsonl
index 91b0c730a8..9e1d99adae 100644
--- a/apps/web/tests/snapshots/live-interactions/session.jsonl
+++ b/apps/web/tests/snapshots/live-interactions/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1784998084441,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1784998084454,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1784998084454,"data":{"content":[{"type":"text","text":"Reply with a one-sentence description of event sourcing, then stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"dc9a43b2-63a3-49bc-97e9-9dfb6465f6c1"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1784998084454,"data":{"content":[{"type":"text","text":"Reply with a one-sentence description of event sourcing, then stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784998084457,"data":{"title":"Reply with a one-sentence description","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784998084519,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784998084520,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784998084520,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784998084900,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1784998084900,"data":{"turn":1,"step":1,"index":0,"dt":[153,3,0,29,1,0,0,28,0,1,0,0,0,28,0,0,0,29,1,0,29,0,0,29,0,0,36,0,21,29],"texts":["The"," user"," is"," asking"," for"," a"," one","-s","entence"," description"," of"," event"," sourcing","."," This"," is"," a"," straightforward"," knowledge"," question"," that"," doesn","'t"," require"," any"," skill"," loading"," or"," tool"," calls","."]}}
 {"type":"assistant/chunk","seq":37,"time":1784998085318,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":86,"time":1784998085814,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Event sourcing is a pattern where all changes to an application's state are stored as an immutable, append-only sequence of events, rather than persisting only the current state, enabling full auditability, temporal queries, and event-driven architectures."}}}}
 {"type":"assistant/chunk","seq":87,"time":1784998085814,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":110,"outputTokens":79,"cacheReadTokens":7680,"reasoningTokens":31}}}}
 {"type":"assistant/chunk","seq":88,"time":1784998085814,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":89,"time":1784998085818,"data":{"turn":1,"step":1,"usage":{"inputTokens":110,"outputTokens":79,"cacheReadTokens":7680,"reasoningTokens":31},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls."},{"type":"text","text":"Event sourcing is a pattern where all changes to an application's state are stored as an immutable, append-only sequence of events, rather than persisting only the current state, enabling full auditability, temporal queries, and event-driven architectures."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3396618c-56a2-4f97-a9c7-2a3cbb16a3c8"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88],"surfaceOp":"append"}
+{"type":"assistant/message","seq":89,"time":1784998085818,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls."},{"type":"text","text":"Event sourcing is a pattern where all changes to an application's state are stored as an immutable, append-only sequence of events, rather than persisting only the current state, enabling full auditability, temporal queries, and event-driven architectures."}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":110,"outputTokens":79,"cacheReadTokens":7680,"reasoningTokens":31}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88],"surfaceOp":"append"}
 {"type":"step/end","seq":90,"time":1784998085820,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":91,"time":1784998085821,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/models-settings/configured.expected.md b/apps/web/tests/snapshots/models-settings/configured.expected.md
new file mode 100644
index 0000000000..8b9c4ad6e1
--- /dev/null
+++ b/apps/web/tests/snapshots/models-settings/configured.expected.md
@@ -0,0 +1,20 @@
+- dialog "设置":
+  - navigation:
+    - text: 设置
+    - button "通用设置":
+      - img
+      - text: 通用设置
+    - button "模型":
+      - img
+      - text: 模型
+  - button "关闭":
+    - img
+    - text: 关闭
+  - heading "模型" [level=2]
+  - paragraph: 填入各提供方的 API 密钥即可使用其模型。
+  - list:
+    - listitem:
+      - text: minimax-cn 已启用
+      - button "编辑"
+      - button "删除"
+  - button "+ 添加提供方"
diff --git a/apps/web/tests/snapshots/models-settings/empty.expected.md b/apps/web/tests/snapshots/models-settings/empty.expected.md
new file mode 100644
index 0000000000..ffea707bd0
--- /dev/null
+++ b/apps/web/tests/snapshots/models-settings/empty.expected.md
@@ -0,0 +1,60 @@
+- dialog "设置":
+  - navigation:
+    - text: 设置
+    - button "通用设置":
+      - img
+      - text: 通用设置
+    - button "模型":
+      - img
+      - text: 模型
+  - button "关闭":
+    - img
+    - text: 关闭
+  - heading "模型" [level=2]
+  - paragraph: 填入各提供方的 API 密钥即可使用其模型。
+  - list
+  - text: 提供方
+  - combobox "提供方":
+    - option "amazon-bedrock"
+    - option "ant-ling"
+    - option "anthropic"
+    - option "azure-openai-responses"
+    - option "cerebras"
+    - option "cloudflare-ai-gateway"
+    - option "cloudflare-workers-ai"
+    - option "deepseek"
+    - option "fireworks"
+    - option "github-copilot"
+    - option "google"
+    - option "google-vertex"
+    - option "groq"
+    - option "huggingface"
+    - option "kimi-coding"
+    - option "minimax"
+    - option "minimax-cn" [selected]
+    - option "mistral"
+    - option "moonshotai"
+    - option "moonshotai-cn"
+    - option "nvidia"
+    - option "openai"
+    - option "openai-codex"
+    - option "opencode"
+    - option "opencode-go"
+    - option "openrouter"
+    - option "qwen-token-plan"
+    - option "qwen-token-plan-cn"
+    - option "together"
+    - option "vercel-ai-gateway"
+    - option "xai"
+    - option "xiaomi"
+    - option "xiaomi-token-plan-ams"
+    - option "xiaomi-token-plan-cn"
+    - option "xiaomi-token-plan-sgp"
+    - option "zai"
+    - option "zai-coding-cn"
+  - text: API 密钥
+  - textbox "API 密钥":
+    - /placeholder: 输入 API 密钥
+  - group: 自定义设置
+  - button "取消"
+  - button "保存"
diff --git a/apps/web/tests/snapshots/navigation-panes/seed.jsonl b/apps/web/tests/snapshots/navigation-panes/seed.jsonl
index 3623cd749a..675588a51e 100644
--- a/apps/web/tests/snapshots/navigation-panes/seed.jsonl
+++ b/apps/web/tests/snapshots/navigation-panes/seed.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785011380476,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785011380489,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785011380490,"data":{"content":[{"type":"text","text":"NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"7dcfe547-5555-4e5d-b2a0-3f9d2e0836a9"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785011380490,"data":{"content":[{"type":"text","text":"NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785011380492,"data":{"title":"NavScenario: first run bash to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785011380549,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785011380550,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785011380550,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785011380917,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785011380917,"data":{"turn":1,"step":1,"index":0,"dt":[110,25,1,0,0,25,1,0,26,0,1,0,27,1,0,0,0,26,1,0,0,26,0,0,0,0,1,25,0,0,25,0,1,0,0,0,26,1,0,25,0,0,27,1,0,0,0,0,25,28,0,1,0,0,0,27,0,0,0,25,1,24,1,0,25],"texts":["The"," user"," wants"," me"," to"," follow"," a"," specific"," navigation"," scenario","."," Let"," me",":\n\n","1","."," Run"," bash"," to"," print"," \"","NA","V","IG","ATION","_OK","\"\n","2","."," Read"," nav","-a",".md"," and"," nav","-b",".md"," in"," two"," read"," calls"," in"," ONE"," message","\n","3","."," Reply"," with"," \"","FIR","ST","_D","ONE","\"\n\n","Let"," me"," start"," with"," the"," bash"," command"," and"," the"," reads","."]}}
 {"type":"assistant/chunk","seq":72,"time":1785011381556,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -18,13 +18,13 @@
 {"type":"assistant/chunk","seq":130,"time":1785011382087,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":3,"block":{"type":"tool-call","id":"call_02_k8Z6wGirxfnW96Iv8mkz9224","name":"read","arguments":"{\"file_path\": \"nav-b.md\"}"}}}}
 {"type":"assistant/chunk","seq":131,"time":1785011382087,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":140,"outputTokens":197,"cacheReadTokens":7680,"reasoningTokens":66}}}}
 {"type":"assistant/chunk","seq":132,"time":1785011382087,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":133,"time":1785011382091,"data":{"turn":1,"step":1,"usage":{"inputTokens":140,"outputTokens":197,"cacheReadTokens":7680,"reasoningTokens":66},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to follow a specific navigation scenario. Let me:\n\n1. Run bash to print \"NAVIGATION_OK\"\n2. Read nav-a.md and nav-b.md in two read calls in ONE message\n3. Reply with \"FIRST_DONE\"\n\nLet me start with the bash command and the reads."},{"type":"tool-call","id":"call_00_kFKHaEXcTYEex0iDZw0C2432","name":"bash","arguments":"{\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"}"},{"type":"tool-call","id":"call_01_tK4hIIRVTMgAvdzs7m9j6212","name":"read","arguments":"{\"file_path\": \"nav-a.md\"}"},{"type":"tool-call","id":"call_02_k8Z6wGirxfnW96Iv8mkz9224","name":"read","arguments":"{\"file_path\": \"nav-b.md\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"83b27ad0-4286-478f-92ef-3bc82bf0589b"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132],"surfaceOp":"append"}
+{"type":"assistant/message","seq":133,"time":1785011382091,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to follow a specific navigation scenario. Let me:\n\n1. Run bash to print \"NAVIGATION_OK\"\n2. Read nav-a.md and nav-b.md in two read calls in ONE message\n3. Reply with \"FIRST_DONE\"\n\nLet me start with the bash command and the reads."},{"type":"tool-call","id":"call_00_kFKHaEXcTYEex0iDZw0C2432","name":"bash","arguments":"{\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"}"},{"type":"tool-call","id":"call_01_tK4hIIRVTMgAvdzs7m9j6212","name":"read","arguments":"{\"file_path\": \"nav-a.md\"}"},{"type":"tool-call","id":"call_02_k8Z6wGirxfnW96Iv8mkz9224","name":"read","arguments":"{\"file_path\": \"nav-b.md\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":140,"outputTokens":197,"cacheReadTokens":7680,"reasoningTokens":66}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132],"surfaceOp":"append"}
 {"type":"tool/call","seq":134,"time":1785011382092,"data":{"turn":1,"step":1,"callId":"call_00_kFKHaEXcTYEex0iDZw0C2432","name":"bash","arguments":"{\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"}"}}
-{"type":"tool/result","seq":135,"time":1785011382105,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_kFKHaEXcTYEex0iDZw0C2432"},"content":[{"type":"tool-result","toolCallId":"call_00_kFKHaEXcTYEex0iDZw0C2432","content":[{"type":"text","text":"NAVIGATION_OK\n"}],"isError":false}],"role":"user","id":"d6e29f9e-8177-4f12-b1b6-2eda4c8f5c31"}},"sourceEventSeqs":[134],"surfaceOp":"append"}
+{"type":"tool/result","seq":135,"time":1785011382105,"data":{"turn":1,"step":1,"callId":"call_00_kFKHaEXcTYEex0iDZw0C2432","content":[{"type":"text","text":"NAVIGATION_OK\n"}],"isError":false},"sourceEventSeqs":[134],"surfaceOp":"append"}
 {"type":"tool/call","seq":136,"time":1785011382105,"data":{"turn":1,"step":1,"callId":"call_01_tK4hIIRVTMgAvdzs7m9j6212","name":"read","arguments":"{\"file_path\": \"nav-a.md\"}"}}
 {"type":"tool/call","seq":137,"time":1785011382106,"data":{"turn":1,"step":1,"callId":"call_02_k8Z6wGirxfnW96Iv8mkz9224","name":"read","arguments":"{\"file_path\": \"nav-b.md\"}"}}
-{"type":"tool/result","seq":138,"time":1785011382113,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_01_tK4hIIRVTMgAvdzs7m9j6212"},"content":[{"type":"tool-result","toolCallId":"call_01_tK4hIIRVTMgAvdzs7m9j6212","content":[{"type":"text","text":"<path>{{cwd}}/workspace/nav-a.md</path>\n<type>file</type>\n<content>\n1: # alpha nav\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"efca7baf-cbb8-462f-ad75-580357b58676"}},"sourceEventSeqs":[136],"surfaceOp":"append"}
-{"type":"tool/result","seq":139,"time":1785011382114,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_02_k8Z6wGirxfnW96Iv8mkz9224"},"content":[{"type":"tool-result","toolCallId":"call_02_k8Z6wGirxfnW96Iv8mkz9224","content":[{"type":"text","text":"<path>{{cwd}}/workspace/nav-b.md</path>\n<type>file</type>\n<content>\n1: # beta nav\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"e1c70190-9e68-429d-963d-8a30ab779ddd"}},"sourceEventSeqs":[137],"surfaceOp":"append"}
+{"type":"tool/result","seq":138,"time":1785011382113,"data":{"turn":1,"step":1,"callId":"call_01_tK4hIIRVTMgAvdzs7m9j6212","content":[{"type":"text","text":"<path>{{cwd}}/workspace/nav-a.md</path>\n<type>file</type>\n<content>\n1: # alpha nav\n\n(End of file - total 1 lines)\n</content>"}],"isError":false},"sourceEventSeqs":[136],"surfaceOp":"append"}
+{"type":"tool/result","seq":139,"time":1785011382114,"data":{"turn":1,"step":1,"callId":"call_02_k8Z6wGirxfnW96Iv8mkz9224","content":[{"type":"text","text":"<path>{{cwd}}/workspace/nav-b.md</path>\n<type>file</type>\n<content>\n1: # beta nav\n\n(End of file - total 1 lines)\n</content>"}],"isError":false},"sourceEventSeqs":[137],"surfaceOp":"append"}
 {"type":"step/end","seq":140,"time":1785011382117,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":141,"time":1785011382118,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":142,"time":1785011382673,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -35,11 +35,11 @@
 {"type":"assistant/chunk","seq":200,"time":1785011383090,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"FIRST_DONE"}}}}
 {"type":"assistant/chunk","seq":201,"time":1785011383090,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":349,"outputTokens":56,"cacheReadTokens":7808,"reasoningTokens":51}}}}
 {"type":"assistant/chunk","seq":202,"time":1785011383090,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":203,"time":1785011383091,"data":{"turn":1,"step":2,"usage":{"inputTokens":349,"outputTokens":56,"cacheReadTokens":7808,"reasoningTokens":51},"message":{"role":"assistant","content":[{"type":"reasoning","text":"All three calls succeeded:\n1. bash printed \"NAVIGATION_OK\"\n2. nav-a.md contains \"# alpha nav\"\n3. nav-b.md contains \"# beta nav\"\n\nNow I need to reply with the single word \"FIRST_DONE\"."},{"type":"text","text":"FIRST_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"0115844e-fac0-4985-9ba7-dcf1dde63b83"}},"sourceEventSeqs":[142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202],"surfaceOp":"append"}
+{"type":"assistant/message","seq":203,"time":1785011383091,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"All three calls succeeded:\n1. bash printed \"NAVIGATION_OK\"\n2. nav-a.md contains \"# alpha nav\"\n3. nav-b.md contains \"# beta nav\"\n\nNow I need to reply with the single word \"FIRST_DONE\"."},{"type":"text","text":"FIRST_DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":349,"outputTokens":56,"cacheReadTokens":7808,"reasoningTokens":51}},"sourceEventSeqs":[142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202],"surfaceOp":"append"}
 {"type":"step/end","seq":204,"time":1785011383091,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":205,"time":1785011383092,"data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"turn/start","seq":206,"time":1785011383106,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":207,"time":1785011383107,"data":{"content":[{"type":"text","text":"Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"1d7a8563-4ae6-49f3-9a65-41f3df300a75"},"surfaceOp":"append"}
+{"type":"user/message","seq":207,"time":1785011383107,"data":{"content":[{"type":"text","text":"Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"step/start","seq":208,"time":1785011383107,"data":{"turn":2,"step":1}}
 {"type":"assistant/chunk","seq":209,"time":1785011383497,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":210,"time0":1785011383497,"data":{"turn":2,"step":1,"index":0,"dt":[125,23,1,0,0,88,0,0,5,0,1,0,0,7,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," a"," specific"," format","."," Let"," me"," do"," that","."]}}
@@ -49,6 +49,6 @@
 {"type":"assistant/chunk","seq":247,"time":1785011383903,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"## Navigation Summary\n\n- alpha nav\n- beta nav\n\n```\necho WATERFALL\n```"}}}}
 {"type":"assistant/chunk","seq":248,"time":1785011383903,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":141,"outputTokens":36,"cacheReadTokens":8064,"reasoningTokens":16}}}}
 {"type":"assistant/chunk","seq":249,"time":1785011383903,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":250,"time":1785011383904,"data":{"turn":2,"step":1,"usage":{"inputTokens":141,"outputTokens":36,"cacheReadTokens":8064,"reasoningTokens":16},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with a specific format. Let me do that."},{"type":"text","text":"## Navigation Summary\n\n- alpha nav\n- beta nav\n\n```\necho WATERFALL\n```"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"70b38db9-38a2-4f9f-8094-1bd799f5f270"}},"sourceEventSeqs":[209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249],"surfaceOp":"append"}
+{"type":"assistant/message","seq":250,"time":1785011383904,"data":{"turn":2,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with a specific format. Let me do that."},{"type":"text","text":"## Navigation Summary\n\n- alpha nav\n- beta nav\n\n```\necho WATERFALL\n```"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":141,"outputTokens":36,"cacheReadTokens":8064,"reasoningTokens":16}},"sourceEventSeqs":[209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249],"surfaceOp":"append"}
 {"type":"step/end","seq":251,"time":1785011383904,"data":{"turn":2,"step":1}}
 {"type":"turn/end","seq":252,"time":1785011383904,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md b/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
index 0bdf87d67a..788b8a3233 100644
--- a/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
+++ b/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
@@ -11,7 +11,7 @@
       - cell "SYSTEM"
       - cell "Initial System Prompt"
     - 'row "USER, NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop."':
-      - cell "Turn 1 USER"
+      - cell "Turn 1 USER": USER
       - 'cell "NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop."'
     - 'row "Request 1, ASSISTANT, The user wants me to follow a specific navigation scenario. Let me: Run bash to print \"NAVIGATION_OK\" Read nav-a.md and nav-b.md in two read calls in ONE message Reply with \"FIRST_DONE\" Let me start with the bash command and the reads."':
       - 'cell "Request #1 ASSISTANT"':
@@ -33,7 +33,7 @@
         - text: ASSISTANT
       - cell "FIRST_DONE"
     - 'row "USER, Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop."':
-      - cell "Turn 2 USER"
+      - cell "Turn 2 USER": USER
       - 'cell "Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop."'
     - row "Request 3, ASSISTANT, Navigation Summary alpha nav beta nav echo WATERFALL":
       - 'cell "Request #3 ASSISTANT"':
diff --git a/apps/web/tests/snapshots/onboarding-deepseek-config/missing.expected.md b/apps/web/tests/snapshots/onboarding-deepseek-config/missing.expected.md
new file mode 100644
index 0000000000..102b6a7fab
--- /dev/null
+++ b/apps/web/tests/snapshots/onboarding-deepseek-config/missing.expected.md
@@ -0,0 +1,6 @@
+- dialog "添加一个 API Key 开始使用":
+  - heading "添加一个 API Key 开始使用" [level=2]
+  - button "稍后配置":
+    - img
+  - paragraph: 配置 DeepSeek 官方模型，即可开始使用。
+  - button "前往配置"
diff --git a/apps/web/tests/snapshots/plan-review/approved.expected.md b/apps/web/tests/snapshots/plan-review/approved.expected.md
index 84cadffe2a..ccabe400f8 100644
--- a/apps/web/tests/snapshots/plan-review/approved.expected.md
+++ b/apps/web/tests/snapshots/plan-review/approved.expected.md
@@ -5,7 +5,7 @@
     - tab "Chat" [selected]
     - tab "Trajectory"
 - img
-- text: "/plan Plan a small change: add a --greeting flag to a CLI. Do not read or write any files. Call exit_plan_mode with a short plan of at most five bullet points. Once the plan is approved, reply with the single word DONE and stop. Plan mode on. Use /plan off to leave. Plan a small change: add a --greeting flag to a CLI. Do not read or write any files. Call exit_plan_mode with a short plan of at most five bullet points. Once the plan is approved, reply with the single word DONE and stop. {{clock}}"
+- text: "plan Plan mode on. Use /plan off to leave. Plan a small change: add a --greeting flag to a CLI. Do not read or write any files. Call exit_plan_mode with a short plan of at most five bullet points. Once the plan is approved, reply with the single word DONE and stop. {{clock}}"
 - button "复制":
   - img
 - button "在新对话中分支":
@@ -20,11 +20,6 @@
   - text: Since the user has explicitly asked me not to read or write any files and to go straight to planning, I'll proceed with
   - code: exit_plan_mode
   - text: .
-- button "复制":
-  - img
-- button "在新对话中分支":
-  - img
-- text: {{clock}}
 - 'button "Tool call exit_plan_mode · # Add `--greeting` flag to CLI"':
   - img
   - img
diff --git a/apps/web/tests/snapshots/question-composer/session.jsonl b/apps/web/tests/snapshots/question-composer/session.jsonl
index b13a84e22c..2ac86783c2 100644
--- a/apps/web/tests/snapshots/question-composer/session.jsonl
+++ b/apps/web/tests/snapshots/question-composer/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785150167878,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785150167924,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785150167925,"data":{"content":[{"type":"text","text":"Use the ask_user_question tool to ask me exactly one question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and two options: label \"Blue\" with description \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\", and label \"Green\" with description \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\" After I answer, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"6deba879-8787-4853-a5f2-0d108a08eb2d"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785150167925,"data":{"content":[{"type":"text","text":"Use the ask_user_question tool to ask me exactly one question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and two options: label \"Blue\" with description \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\", and label \"Green\" with description \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\" After I answer, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785150167927,"data":{"title":"Use the ask_user_question tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785150167928,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785150167929,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785150167929,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785150168452,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785150168452,"data":{"turn":1,"step":1,"index":0,"dt":[87,26,1,0,0,0,38,0,0,0,0,1,12,27,0,27,0,0,1,25,0],"texts":["The"," user"," wants"," me"," to"," use"," the"," ask","_user","_","question"," tool"," with"," specific"," parameters","."," Let"," me"," do"," exactly"," that","."]}}
 {"type":"assistant/chunk","seq":28,"time":1785150168775,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,9 +12,9 @@
 {"type":"assistant/chunk","seq":128,"time":1785150169308,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Cijldc88LYmVPCXYUsRq1617","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\", \"description\": \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\"}, {\"label\": \"Green\", \"description\": \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\"}]}]}"}}}}
 {"type":"assistant/chunk","seq":129,"time":1785150169308,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":113,"outputTokens":158,"cacheReadTokens":4096,"reasoningTokens":22}}}}
 {"type":"assistant/chunk","seq":130,"time":1785150169308,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":131,"time":1785150169311,"data":{"turn":1,"step":1,"usage":{"inputTokens":113,"outputTokens":158,"cacheReadTokens":4096,"reasoningTokens":22},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the ask_user_question tool with specific parameters. Let me do exactly that."},{"type":"tool-call","id":"call_00_Cijldc88LYmVPCXYUsRq1617","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\", \"description\": \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\"}, {\"label\": \"Green\", \"description\": \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\"}]}]}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"cdb1676c-e781-41ee-8f28-a3595371d729"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130],"surfaceOp":"append"}
+{"type":"assistant/message","seq":131,"time":1785150169311,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the ask_user_question tool with specific parameters. Let me do exactly that."},{"type":"tool-call","id":"call_00_Cijldc88LYmVPCXYUsRq1617","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\", \"description\": \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\"}, {\"label\": \"Green\", \"description\": \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\"}]}]}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":113,"outputTokens":158,"cacheReadTokens":4096,"reasoningTokens":22}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130],"surfaceOp":"append"}
 {"type":"tool/call","seq":132,"time":1785150169312,"data":{"turn":1,"step":1,"callId":"call_00_Cijldc88LYmVPCXYUsRq1617","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\", \"description\": \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\"}, {\"label\": \"Green\", \"description\": \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\"}]}]}"}}
-{"type":"tool/result","seq":133,"time":1785150169787,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_Cijldc88LYmVPCXYUsRq1617"},"content":[{"type":"tool-result","toolCallId":"call_00_Cijldc88LYmVPCXYUsRq1617","content":[{"type":"text","text":"{\"answers\":[{\"id\":\"color\",\"selected\":[\"Blue\"]}]}"}],"isError":false}],"role":"user","id":"c69ef39f-6f62-439f-b3f8-e8d10fba572f"}},"sourceEventSeqs":[132],"surfaceOp":"append"}
+{"type":"tool/result","seq":133,"time":1785150169787,"data":{"turn":1,"step":1,"callId":"call_00_Cijldc88LYmVPCXYUsRq1617","content":[{"type":"text","text":"{\"answers\":[{\"id\":\"color\",\"selected\":[\"Blue\"]}]}"}],"isError":false},"sourceEventSeqs":[132],"surfaceOp":"append"}
 {"type":"step/end","seq":134,"time":1785150169790,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":135,"time":1785150169790,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":136,"time":1785150170605,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":160,"time":1785150170856,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":161,"time":1785150170856,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":284,"outputTokens":22,"cacheReadTokens":4096,"reasoningTokens":19}}}}
 {"type":"assistant/chunk","seq":162,"time":1785150170856,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":163,"time":1785150170857,"data":{"turn":1,"step":2,"usage":{"inputTokens":284,"outputTokens":22,"cacheReadTokens":4096,"reasoningTokens":19},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user answered \"Blue\". I should now reply with the single word DONE and stop."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b5f572cb-f2a7-4fa0-8097-a5551700a920"}},"sourceEventSeqs":[136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162],"surfaceOp":"append"}
+{"type":"assistant/message","seq":163,"time":1785150170857,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The user answered \"Blue\". I should now reply with the single word DONE and stop."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":284,"outputTokens":22,"cacheReadTokens":4096,"reasoningTokens":19}},"sourceEventSeqs":[136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162],"surfaceOp":"append"}
 {"type":"step/end","seq":164,"time":1785150170858,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":165,"time":1785150170858,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/seeded-history/command-row.expected.md b/apps/web/tests/snapshots/seeded-history/command-row.expected.md
new file mode 100644
index 0000000000..f42b549a57
--- /dev/null
+++ b/apps/web/tests/snapshots/seeded-history/command-row.expected.md
@@ -0,0 +1,53 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the read tool twice" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: "Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop. {{clock}}"
+- button "复制":
+  - img
+- button "在新对话中分支":
+  - img
+- button "编辑":
+  - img
+- button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
+  - img
+  - img
+  - text: Think The user wants me to read a.txt and b.txt, then reply with "DONE". Let me do both reads in parallel.
+- button "Read a.txt":
+  - img
+  - img
+  - text: Read
+  - button "a.txt"
+- button "Read b.txt":
+  - img
+  - img
+  - text: Read
+  - button "b.txt"
+- button "Think Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed.":
+  - img
+  - img
+  - text: Think Both files have been read. a.txt contains "alpha" and b.txt contains "beta". I'll now reply with DONE as instructed.
+- paragraph: DONE
+- button "复制":
+  - img
+- button "在新对话中分支":
+  - img
+- text: {{clock}}
+- button "上下文注入":
+  - img
+  - img
+  - text: 上下文注入
+- img
+- text: permission preset workspace-write
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Plan mode off, press to turn on": Plan off
+- button "Select model, current deepseek-v4-flash":
+  - text: deepseek-v4-flash
+  - img
+- button "Send message" [disabled]
+- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 98% Input 15.8K tok · Output 135 tok
diff --git a/apps/web/tests/snapshots/seeded-history/seed.jsonl b/apps/web/tests/snapshots/seeded-history/seed.jsonl
index bf69bcf152..22c7165069 100644
--- a/apps/web/tests/snapshots/seeded-history/seed.jsonl
+++ b/apps/web/tests/snapshots/seeded-history/seed.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1784974100747,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1784974100758,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1784974100759,"data":{"content":[{"type":"text","text":"Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"38f072be-5254-4cb7-b76e-d612b2ae3b3a"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1784974100759,"data":{"content":[{"type":"text","text":"Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784974100761,"data":{"title":"Use the read tool twice","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784974100827,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784974100828,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784974100828,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784974101296,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1784974101297,"data":{"turn":1,"step":1,"index":0,"dt":[125,30,0,1,0,0,30,1,0,0,0,0,30,1,0,0,30,0,0,0,0,1,30,1,0,0],"texts":["The"," user"," wants"," me"," to"," read"," a",".txt"," and"," b",".txt",","," then"," reply"," with"," \"","D","ONE","\"."," Let"," me"," do"," both"," reads"," in"," parallel","."]}}
 {"type":"assistant/chunk","seq":33,"time":1784974101666,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -15,11 +15,11 @@
 {"type":"assistant/chunk","seq":61,"time":1784974101974,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":2,"block":{"type":"tool-call","id":"call_01_Hw6AQjhf9gjxnOtppcGx0725","name":"read","arguments":"{\"file_path\": \"b.txt\"}"}}}}
 {"type":"assistant/chunk","seq":62,"time":1784974101974,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":124,"outputTokens":103,"cacheReadTokens":7680,"reasoningTokens":27}}}}
 {"type":"assistant/chunk","seq":63,"time":1784974101974,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":64,"time":1784974101978,"data":{"turn":1,"step":1,"usage":{"inputTokens":124,"outputTokens":103,"cacheReadTokens":7680,"reasoningTokens":27},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel."},{"type":"tool-call","id":"call_00_OsndvlcKnCcUmae7QXal8633","name":"read","arguments":"{\"file_path\": \"a.txt\"}"},{"type":"tool-call","id":"call_01_Hw6AQjhf9gjxnOtppcGx0725","name":"read","arguments":"{\"file_path\": \"b.txt\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"ec076738-f75d-4525-ba99-c8fc16acf955"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63],"surfaceOp":"append"}
+{"type":"assistant/message","seq":64,"time":1784974101978,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel."},{"type":"tool-call","id":"call_00_OsndvlcKnCcUmae7QXal8633","name":"read","arguments":"{\"file_path\": \"a.txt\"}"},{"type":"tool-call","id":"call_01_Hw6AQjhf9gjxnOtppcGx0725","name":"read","arguments":"{\"file_path\": \"b.txt\"}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":124,"outputTokens":103,"cacheReadTokens":7680,"reasoningTokens":27}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63],"surfaceOp":"append"}
 {"type":"tool/call","seq":65,"time":1784974101979,"data":{"turn":1,"step":1,"callId":"call_00_OsndvlcKnCcUmae7QXal8633","name":"read","arguments":"{\"file_path\": \"a.txt\"}"}}
 {"type":"tool/call","seq":66,"time":1784974101981,"data":{"turn":1,"step":1,"callId":"call_01_Hw6AQjhf9gjxnOtppcGx0725","name":"read","arguments":"{\"file_path\": \"b.txt\"}"}}
-{"type":"tool/result","seq":67,"time":1784974101985,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_OsndvlcKnCcUmae7QXal8633"},"content":[{"type":"tool-result","toolCallId":"call_00_OsndvlcKnCcUmae7QXal8633","content":[{"type":"text","text":"<path>{{cwd}}/workspace/a.txt</path>\n<type>file</type>\n<content>\n1: alpha\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"ea2294eb-8652-4492-8a08-9c24d3f8a60f"}},"sourceEventSeqs":[65],"surfaceOp":"append"}
-{"type":"tool/result","seq":68,"time":1784974101986,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_01_Hw6AQjhf9gjxnOtppcGx0725"},"content":[{"type":"tool-result","toolCallId":"call_01_Hw6AQjhf9gjxnOtppcGx0725","content":[{"type":"text","text":"<path>{{cwd}}/workspace/b.txt</path>\n<type>file</type>\n<content>\n1: beta\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"f02b3acf-4e03-4b4d-beeb-1a564c9c6d61"}},"sourceEventSeqs":[66],"surfaceOp":"append"}
+{"type":"tool/result","seq":67,"time":1784974101985,"data":{"turn":1,"step":1,"callId":"call_00_OsndvlcKnCcUmae7QXal8633","content":[{"type":"text","text":"<path>{{cwd}}/workspace/a.txt</path>\n<type>file</type>\n<content>\n1: alpha\n\n(End of file - total 1 lines)\n</content>"}],"isError":false},"sourceEventSeqs":[65],"surfaceOp":"append"}
+{"type":"tool/result","seq":68,"time":1784974101986,"data":{"turn":1,"step":1,"callId":"call_01_Hw6AQjhf9gjxnOtppcGx0725","content":[{"type":"text","text":"<path>{{cwd}}/workspace/b.txt</path>\n<type>file</type>\n<content>\n1: beta\n\n(End of file - total 1 lines)\n</content>"}],"isError":false},"sourceEventSeqs":[66],"surfaceOp":"append"}
 {"type":"step/end","seq":69,"time":1784974101988,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":70,"time":1784974101988,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":71,"time":1784974102397,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -31,6 +31,6 @@
 {"type":"assistant/chunk","seq":105,"time":1784974102749,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":106,"time":1784974102750,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":215,"outputTokens":32,"cacheReadTokens":7808,"reasoningTokens":29}}}}
 {"type":"assistant/chunk","seq":107,"time":1784974102750,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":108,"time":1784974102750,"data":{"turn":1,"step":2,"usage":{"inputTokens":215,"outputTokens":32,"cacheReadTokens":7808,"reasoningTokens":29},"message":{"role":"assistant","content":[{"type":"reasoning","text":"Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"07627a5e-4cb2-47ef-9b50-88893aac7406"}},"sourceEventSeqs":[71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107],"surfaceOp":"append"}
+{"type":"assistant/message","seq":108,"time":1784974102750,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed."},{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":215,"outputTokens":32,"cacheReadTokens":7808,"reasoningTokens":29}},"sourceEventSeqs":[71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107],"surfaceOp":"append"}
 {"type":"step/end","seq":109,"time":1784974102751,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":110,"time":1784974102751,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/steering/session.jsonl b/apps/web/tests/snapshots/steering/session.jsonl
index eb21251997..ae41282be0 100644
--- a/apps/web/tests/snapshots/steering/session.jsonl
+++ b/apps/web/tests/snapshots/steering/session.jsonl
@@ -1,9 +1,9 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785004180013,"cwd":"{{cwd}}/workspace"}
 {"type":"turn/start","seq":0,"time":1785004180030,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
-{"type":"user/message","seq":1,"time":1785004180030,"data":{"content":[{"type":"text","text":"Use the ask_user_question tool to ask me exactly one question with id \"checkpoint\", question \"Ready to continue?\", header \"Checkpoint\", and options labeled \"Yes\" and \"No\". After I answer, reply with one short sentence acknowledging my answer and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"eb77fa3d-5d60-4028-a592-e1f07a288f35"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785004180030,"data":{"content":[{"type":"text","text":"Use the ask_user_question tool to ask me exactly one question with id \"checkpoint\", question \"Ready to continue?\", header \"Checkpoint\", and options labeled \"Yes\" and \"No\". After I answer, reply with one short sentence acknowledging my answer and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785004180033,"data":{"title":"Use the ask_user_question tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785004180105,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785004180106,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785004180106,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785004180696,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785004180697,"data":{"turn":1,"step":1,"index":0,"dt":[88,29,1,0,0,0,28,0,0,1,0,0,30,1,27,0,0,0,0,28,1,0,30,0,0,0,28,1],"texts":["The"," user"," wants"," me"," to"," use"," the"," ask","_user","_","question"," tool"," to"," ask"," them"," a"," specific"," question"," with"," the"," given"," parameters","."," Let"," me"," do"," exactly"," that","."]}}
 {"type":"assistant/chunk","seq":35,"time":1785004181077,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,10 +12,10 @@
 {"type":"assistant/chunk","seq":85,"time":1785004181401,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}}}}
 {"type":"assistant/chunk","seq":86,"time":1785004181401,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":151,"outputTokens":115,"cacheReadTokens":7680,"reasoningTokens":29}}}}
 {"type":"assistant/chunk","seq":87,"time":1785004181402,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":88,"time":1785004181406,"data":{"turn":1,"step":1,"usage":{"inputTokens":151,"outputTokens":115,"cacheReadTokens":7680,"reasoningTokens":29},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that."},{"type":"tool-call","id":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"ac0cfafd-795f-4bc3-9dc9-a8df33538a38"}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87],"surfaceOp":"append"}
+{"type":"assistant/message","seq":88,"time":1785004181406,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that."},{"type":"tool-call","id":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":151,"outputTokens":115,"cacheReadTokens":7680,"reasoningTokens":29}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87],"surfaceOp":"append"}
 {"type":"tool/call","seq":89,"time":1785004181407,"data":{"turn":1,"step":1,"callId":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}}
-{"type":"tool/result","seq":90,"time":1785004181867,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_sAvjivLShvnWVk0sPQPV7661"},"content":[{"type":"tool-result","toolCallId":"call_00_sAvjivLShvnWVk0sPQPV7661","content":[{"type":"text","text":"{\"answers\":[{\"id\":\"checkpoint\",\"selected\":[\"Yes\"]}]}"}],"isError":false}],"role":"user","id":"9c2175f8-3cd4-4d6c-9320-498d25f83342"}},"sourceEventSeqs":[89],"surfaceOp":"append"}
-{"type":"steering/message","seq":91,"time":1785004181867,"data":{"turn":1,"message":{"content":[{"type":"text","text":"Interjection: include the word BANANA in your final reply."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"291e02ad-cf8a-459f-a388-f81ed334e629"}},"surfaceOp":"append"}
+{"type":"tool/result","seq":90,"time":1785004181867,"data":{"turn":1,"step":1,"callId":"call_00_sAvjivLShvnWVk0sPQPV7661","content":[{"type":"text","text":"{\"answers\":[{\"id\":\"checkpoint\",\"selected\":[\"Yes\"]}]}"}],"isError":false},"sourceEventSeqs":[89],"surfaceOp":"append"}
+{"type":"steering/message","seq":91,"time":1785004181867,"data":{"turn":1,"content":[{"type":"text","text":"Interjection: include the word BANANA in your final reply."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
 {"type":"step/end","seq":92,"time":1785004181870,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":93,"time":1785004181870,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":94,"time":1785004182322,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":137,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Great, let's move forward. BANANA!"}}}}
 {"type":"assistant/chunk","seq":138,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}}}}
 {"type":"assistant/chunk","seq":139,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":140,"time":1785004182894,"data":{"turn":1,"step":2,"usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29},"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."},{"type":"text","text":"Great, let's move forward. BANANA!"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b49cca3a-fa40-4f45-91c9-e7c3f15fa233"}},"sourceEventSeqs":[94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139],"surfaceOp":"append"}
+{"type":"assistant/message","seq":140,"time":1785004182894,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."},{"type":"text","text":"Great, let's move forward. BANANA!"}],"provenance":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}},"sourceEventSeqs":[94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139],"surfaceOp":"append"}
 {"type":"step/end","seq":141,"time":1785004182895,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":142,"time":1785004182895,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index f6539a37b6..f5774e1545 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -33,6 +33,8 @@
     "tests/lifecycle-chrome.e2e.ts",
     "tests/details-session-lifecycle.e2e.ts",
     "tests/settings-chrome.e2e.ts",
+    "tests/models-settings.e2e.ts",
+    "tests/onboarding-deepseek-config.e2e.ts",
     "tests/workspace-management.e2e.ts",
     "tests/replay-round-trip.e2e.ts",
     "tests/seeded-history.e2e.ts",
diff --git a/docs/architecture.i18n.yaml b/docs/architecture.i18n.yaml
index dfff50708f..470ae7f7cf 100644
--- a/docs/architecture.i18n.yaml
+++ b/docs/architecture.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/architecture.md
-architecture.md: 1fd9bd128d1bcc0dd91d46131981ea4fc331bd74
-architecture.zh.md: 8521f09c6e415f9f8d1c0a44f7534b59c876decc
+architecture.md: c6e14fac6436b2401509aaf8bb20ccaf29aeeafc
+architecture.zh.md: 2e85f25eb3f40f58c8ffbfa7691bb793638c8b37
diff --git a/docs/architecture.md b/docs/architecture.md
index 1fd9bd128d..c6e14fac64 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -46,6 +46,8 @@ Harnesses are [Cordis](cordis-primer.md) contexts; packages contribute services,
 | `ctx.sessionPersistence` | [`session-persistence/`](../packages/session-persistence/README.md) | durable session-log storage |
 | `ctx.sessionQuery` | [`session-query/`](../packages/session-query/README.md) | live-preferred exact/filter/trace queries over SQLite FTS, workspace-authorized model tools |
 | `ctx.sessionTitle` | [`session-title/`](../packages/session-title/README.md) | log-backed fallbacks, one optional asynchronous provider |
+| `ctx.settings` | [`settings/`](../packages/settings/README.md) | per-plugin user-settings namespaces layered over composition entries |
+| `ctx.credentials` | [`credentials/`](../packages/credentials/README.md) | named secret references resolved per operation, never inlined in configuration |
 | `ctx.directoryPicker` | [`host/directory-picker`](../packages/host/directory-picker/README.md) | GUI-host directory picking (`native`/`browse` interactions) |
 | `ctx.typert` | [`typert/registry`](../packages/typert/registry/README.md) | runtime registry for generated package reflection and live Zod schemas |
 | `ctx.invariants` | [`support/invariants`](../packages/support/invariants/README.md) | package-name-selected registry of package-owned runtime checks |
@@ -94,7 +96,7 @@ forever:
       assemble system prompt and tool schemas
       snapshot the derived messages (the reconstruction boundary)
       'step/start'
-      agent/request (config only) -> prepare reasoning/default under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
+      agent/request (config only) -> prepare adapter defaults/provenance under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
       'assistant/chunk'
       'assistant/message'
       schedule tool calls by ctx.tools.executionMode:
@@ -143,7 +145,7 @@ Each agent owns scoped `agent.ctx`; shared storage overlays its tool, prompt, an
 
 The session log is authoritative. `deriveMessages()` projects model history; raw `assistant/chunk` events preserve replay and UI fidelity. Fork, resume, transcript rendering, telemetry, and persistence derive from this stream.
 
-**Model-visible ⟺ logged**: messages at `step/start` plus the folded `request/header` reconstruct every request; package-owned `dsh-agent-loop/invariant` can assert this through `ctx.invariants` ([reconstructability](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)).
+**Model-visible ⟺ logged**: messages at `step/start` plus the folded `request/header` reconstruct every request; the header also marks adapter-materialized defaults so the next proposal can discard them and resolve the selected route without losing explicit conversation settings. Package-owned `dsh-agent-loop/invariant` can assert reconstructability through `ctx.invariants` ([reconstructability](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)).
 
 Durability is a plugin concern. Backends eagerly drain synchronous `session/event` notifications. `session/flush` barriers precede each request and top-level tool dispatch, then follow `turn/end` before another queued turn or idle observation. `SessionPersistence` stores `SessionEvent` directly and metadata in `SessionHeader`; JSONL defaults to checksummed Zstandard, while SQLite shares the contract ([decision](../.agents/notes/implemented/bug-fix/2026-07-21-semantic-session-checkpoints.md)).
 
diff --git a/docs/architecture.zh.md b/docs/architecture.zh.md
index 8521f09c6e..2e85f25eb3 100644
--- a/docs/architecture.zh.md
+++ b/docs/architecture.zh.md
@@ -46,6 +46,8 @@
 | `ctx.sessionPersistence` | [`session-persistence/`](../packages/session-persistence/README.md) | 会话日志的持久化存储 |
 | `ctx.sessionQuery` | [`session-query/`](../packages/session-query/README.md) | 基于 SQLite 全文搜索的实时优先精确检索／过滤／追踪、经工作区授权的模型工具 |
 | `ctx.sessionTitle` | [`session-title/`](../packages/session-title/README.md) | 基于日志的回退标题和单个可选异步提供方 |
+| `ctx.settings` | [`settings/`](../packages/settings/README.md) | 按插件划分的用户设置命名空间，分层叠加在装配条目之上 |
+| `ctx.credentials` | [`credentials/`](../packages/credentials/README.md) | 具名密钥引用，按操作解析，绝不内联进配置 |
 | `ctx.directoryPicker` | [`host/directory-picker`](../packages/host/directory-picker/README.md) | GUI 宿主目录选取（`native`／`browse` 交互） |
 | `ctx.typert` | [`typert/registry`](../packages/typert/registry/README.md) | 生成的包反射和实时 Zod schema 的运行时注册表 |
 | `ctx.invariants` | [`support/invariants`](../packages/support/invariants/README.md) | 按包名筛选包自有运行时检查的注册表 |
@@ -94,7 +96,7 @@ forever:
       assemble system prompt and tool schemas
       snapshot the derived messages (the reconstruction boundary)
       'step/start'
-      agent/request (config only) -> prepare reasoning/default under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
+      agent/request (config only) -> prepare adapter defaults/provenance under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
       'assistant/chunk'
       'assistant/message'
       schedule tool calls by ctx.tools.executionMode:
@@ -143,7 +145,7 @@ idle inject:
 
 会话日志是权威依据。`deriveMessages()` 投影出模型历史；原始 `assistant/chunk` 事件保证回放和 UI 保真。fork、恢复、transcript（文本记录）渲染、遥测和持久化均派生自该事件流。
 
-**模型可见 ⟺ 已记录**：`step/start` 时的消息与折叠后的 `request/header` 可以重建每个请求；该包的 `dsh-agent-loop/invariant` 可通过 `ctx.invariants` 断言这一点（[可重建性](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)）。
+**模型可见 ⟺ 已记录**：`step/start` 时的消息与折叠后的 `request/header` 可以重建每个请求；该 header 还会标记适配器填入的默认值，使下一次提议可以丢弃这些值并解析所选路由，同时不丢失显式对话设置。该包的 `dsh-agent-loop/invariant` 可通过 `ctx.invariants` 断言可重建性（[可重建性](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)）。
 
 持久性由插件负责。后端会尽快排空同步的 `session/event` 通知。`session/flush` 屏障位于每次请求与顶层工具分发之前，并在 `turn/end` 之后、处理另一个已排队轮次或观察到空闲状态之前执行。`SessionPersistence` 直接存储 `SessionEvent`，并将元数据存入 `SessionHeader`；JSONL 默认采用带校验和的 Zstandard，SQLite 遵循同一契约（[决策](../.agents/notes/implemented/bug-fix/2026-07-21-semantic-session-checkpoints.md)）。
 
diff --git a/docs/capability-seams.md b/docs/capability-seams.md
index e53dd67aba..d31ee37d8e 100644
--- a/docs/capability-seams.md
+++ b/docs/capability-seams.md
@@ -41,6 +41,10 @@ flowchart LR
   pkg_settings["settings"]
   svc_settings["ctx.settings<br/>User-settings seam"]
   pkg_settings_local["settings-local"]
+  pkg_apiproxy["apiproxy"]
+  pkg_credentials["credentials"]
+  svc_credentials["ctx.credentials<br/>Credential seam"]
+  pkg_credentials_local["credentials-local"]
   pkg_session_telemetry["session-telemetry"]
   svc_telemetry["ctx.telemetry<br/>Session telemetry seam"]
   pkg_session_telemetry_otel["session-telemetry-otel"]
@@ -52,7 +56,6 @@ flowchart LR
   svc_storageDomain["ctx.storageDomain<br/>Domain data facility"]
   pkg_workspace["workspace"]
   svc_workspace["ctx.workspace<br/>Workspace entity registry"]
-  pkg_apiproxy["apiproxy"]
   svc_sessionQuery["ctx.sessionQuery<br/>Session reads, traces, filters, and search"]
   pkg_session_reference["session-reference"]
   pkg_tool_session_query["tool-session-query"]
@@ -174,6 +177,8 @@ flowchart LR
   pkg_compact --> svc_compact
   pkg_compact_basic --> svc_compact
   pkg_compact_tool_result_prune --> svc_toolResultPrune
+  pkg_credentials --> svc_credentials
+  pkg_credentials_local --> svc_credentials
   pkg_directory_picker --> svc_directoryPicker
   pkg_directory_picker_browse --> svc_directoryPicker
   pkg_directory_picker_native --> svc_directoryPicker
@@ -258,6 +263,9 @@ flowchart LR
   svc_codeRuntime --> pkg_tools
   svc_commands --> pkg_tui
   svc_compact --> pkg_compact_basic
+  svc_credentials --> pkg_apiproxy
+  svc_credentials --> pkg_llm_deepseek
+  svc_credentials --> pkg_llm_pi_ai
   svc_directoryPicker --> pkg_apiproxy
   svc_fs --> pkg_tool_fs
   svc_httpServer --> pkg_connection
@@ -296,6 +304,9 @@ flowchart LR
   svc_sessions --> pkg_session_query
   svc_sessions --> pkg_session_query_sqlite
   svc_sessions --> pkg_subagent_inprocess
+  svc_settings --> pkg_apiproxy
+  svc_settings --> pkg_llm_deepseek
+  svc_settings --> pkg_llm_pi_ai
   svc_skills --> pkg_tool_skill
   svc_spillStore --> pkg_spill_policy
   svc_storage --> pkg_storage_domain
@@ -346,7 +357,8 @@ flowchart LR
 | `ctx.invariants` | `core` | [`invariants`](../packages/support/invariants) | - | [`session`](../packages/core/session), [`agent`](../packages/core/agent), [`scope`](../packages/core/scope), [`agent-loop`](../packages/core/agent-loop) | - | Companion subpaths register owner-local checks; the service owns selection, uniqueness, child fibers, and package-attributed failures. |
 | `ctx.typert` | `core` | [`typert-registry`](../packages/typert/registry) | - | [`typert-loader`](../packages/typert/loader) | - | Plugins register live zod contributions directly or through dsh-typert-loader; runtime consumers query schemas and reflection metadata at their own edges. |
 | `ctx.sessionPersistence` | `seam` | [`session-persistence`](../packages/session-persistence/session-persistence) | [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`session-persistence-sqlite`](../packages/session-persistence/session-persistence-sqlite) | [`agent-loop`](../packages/core/agent-loop), [`tool-bash`](../packages/bash/tool-bash), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`session-query`](../packages/session-query/session-query), [`session-query-sqlite`](../packages/session-query/session-query-sqlite) | - | Backends persist the same SessionEvent vocabulary; apps choose a backend at composition time. |
-| `ctx.settings` | `seam` | [`settings`](../packages/settings/settings) | [`settings-local`](../packages/settings/settings-local) | - | - | Plugins register namespace schemas and resolve layered values; providers store the raw document. No production consumer is migrated yet. |
+| `ctx.settings` | `seam` | [`settings`](../packages/settings/settings) | [`settings-local`](../packages/settings/settings-local) | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-pi-ai`](../packages/llm/llm-pi-ai), `apiproxy` | - | Plugins register namespace schemas and resolve layered values; providers store the raw document. The LLM adapters register their entry config as the composition base under the user section; the web gateway serves redacted layered descriptors and writes the user layer. |
+| `ctx.credentials` | `seam` | [`credentials`](../packages/credentials/credentials) | [`credentials-local`](../packages/credentials/credentials-local) | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-pi-ai`](../packages/llm/llm-pi-ai), `apiproxy` | - | Configuration carries references to secrets; providers own the values. Consumers resolve per operation, so a rotated credential reaches the very next request; the web gateway exposes value-free views and write-only storage. |
 | `ctx.telemetry` | `seam` | [`session-telemetry`](../packages/telemetry/session-telemetry) | [`session-telemetry-otel`](../packages/telemetry/session-telemetry-otel) | - | - | The seam captures, redacts, and hands session records to one backend; nothing else consumes the service — its output leaves the process. |
 | `ctx.storage` | `seam` | [`storage`](../packages/storage/storage) | [`storage-json`](../packages/storage/storage-json), [`storage-sqlite`](../packages/storage/storage-sqlite) | [`storage-domain`](../packages/storage/storage-domain) | - | Backends register side by side under names; data forms (domain first) mount on the hub and translate typed operations into opaque KV-unit primitives. |
 | `ctx.storageDomain` | `core` | [`storage-domain`](../packages/storage/storage-domain) | - | [`workspace`](../packages/workspace/workspace) | - | Waits for every configured backend, then publishes the domain form as one lifecycle-bound service for typed durable state. |
diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index 29b49b7c5d..f1d901d326 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -407,6 +407,24 @@ export interface ToolResultPruneConfig {
 
 Source: [`packages/compact/compact-tool-result-prune/src/types.ts:4`](../packages/compact/compact-tool-result-prune/src/types.ts)
 
+## `@deepseek-ai/dsh-credentials-local`
+
+```ts config-catalog
+/** Plugin config: file location and hot-reload behavior. */
+export interface Config {
+  /** Credentials document path; defaults to `.env` under the harness home. */
+  path?: string
+  /** Harness home used when `path` is omitted; defaults to `$DSH_HOME` or `~/.dsh`. */
+  dshHome?: string
+  /** Watch the document and hot-publish external edits; defaults to true. */
+  watch?: boolean
+  /** Watcher write-settle window in milliseconds; defaults to 100. */
+  debounceMs?: number
+}
+```
+
+Source: [`packages/credentials/credentials-local/src/index.ts:26`](../packages/credentials/credentials-local/src/index.ts)
+
 ## `@deepseek-ai/dsh-fs-local`
 
 ```ts config-catalog
@@ -602,22 +620,27 @@ Requires: `llm`
 
 ```ts config-catalog
 /**
- * Plugin config, validated by the same-named schemastery schema. Every field
- * is optional in yml: credentials/endpoint fall back to the environment (a
- * missing API key fails plugin load, not the first call), omitted thinking
- * mode uses the provider default, and omitted reasoning effort resolves to
- * `high`.
+ * Plugin config, validated by the same-named schemastery schema and doubling
+ * as the `llm-deepseek` settings-section shape. Every field is optional in
+ * yml: a missing API key resolves through {@link Config.apiKeyEnv} at each
+ * request (a request without any key fails with `MISSING_CREDENTIAL`, not at
+ * plugin load), omitted thinking mode uses the provider default, and omitted
+ * reasoning effort resolves to `high`.
  */
 export interface Config {
-  /** API key; falls back to $DEEPSEEK_API_KEY. Required one way or the other. */
+  /** Literal API key; prefer {@link apiKeyEnv} so no secret enters configuration files. */
   apiKey?: string
+  /** Credential reference (environment-variable name) resolved per request; defaults to `DEEPSEEK_API_KEY`. */
+  apiKeyEnv?: string
   /** Endpoint base; falls back to $DEEPSEEK_BASE_URL, then the public API. */
   baseURL?: string
   /** Deployment thinking policy; `disabled` limits every conversation request to `off`. */
   thinking?: 'enabled' | 'disabled'
   /** Default thinking effort (default `high`); `off` disables thinking per request. */
   reasoningEffort?: 'off' | 'high' | 'max'
-  /** Positive context capacity used when the selected model has no exact value. */
+  /** Default per-request output cap (default 256,000); explicit request values win. */
+  maxTokens?: number
+  /** Positive context capacity used when the selected model has no exact value (default 1,000,000). */
   defaultContextWindow?: number
   /** Advisory models shown by discovery consumers; defaults to V4 Flash and V4 Pro. */
   models?: DeepSeekCatalogModel[]
@@ -642,25 +665,29 @@ export interface DeepSeekCatalogModel {
 
 Depends on: [`RetryPolicyConfig`](../packages/llm/llm/src/index.ts)
 
-Source: [`packages/llm/llm-deepseek/src/index.ts:36`](../packages/llm/llm-deepseek/src/index.ts)
+Source: [`packages/llm/llm-deepseek/src/index.ts:60`](../packages/llm/llm-deepseek/src/index.ts)
 
 ## `@deepseek-ai/dsh-llm-pi-ai`
 
 Requires: `llm`
 
 ```ts config-catalog
-/** Plugin configuration: the non-empty provider profiles this instance owns. */
+/** Plugin configuration: the provider routes this instance owns. */
 export interface Config {
-  /** Non-empty set of pi-ai provider routes this adapter instance owns. */
-  providers: PiAiProviderProfile[]
+  /**
+   * pi-ai provider routes, keyed by provider. An empty (or omitted) dict is
+   * the dormant settings-driven posture: the adapter mounts with no routes
+   * and registers them the moment a settings section supplies profiles.
+   */
+  providers?: Record<string, PiAiProviderProfile>
 }
 
-/** Configuration for one pi-ai provider route. */
+/** Configuration for one pi-ai provider route; the `providers` dict key IS the route. */
 export interface PiAiProviderProfile {
-  /** pi-ai provider catalog name and Harness route key. */
-  provider: string
-  /** Provider credential; when absent pi-ai uses its provider-native ambient discovery. */
+  /** Literal provider credential; prefer {@link apiKeyEnv}. With both absent pi-ai uses its provider-native ambient discovery. */
   apiKey?: string
+  /** Credential reference (environment-variable name) resolved per request through `ctx.credentials`. */
+  apiKeyEnv?: string
   /** Override the selected catalog model's endpoint without changing its protocol metadata. */
   baseURL?: string
   /** Provider request headers; Harness attribution wins reserved names. */
@@ -686,7 +713,7 @@ export interface PiAiProviderProfile {
 
 Depends on: `CacheRetention` (`@earendil-works/pi-ai`) · `ModelThinkingLevel` (`@earendil-works/pi-ai`) · [`RetryPolicyConfig`](../packages/llm/llm/src/index.ts) · `ThinkingBudgets` (`@earendil-works/pi-ai`) · `Transport` (`@earendil-works/pi-ai`)
 
-Source: [`packages/llm/llm-pi-ai/src/config.ts:54`](../packages/llm/llm-pi-ai/src/config.ts)
+Source: [`packages/llm/llm-pi-ai/src/config.ts:62`](../packages/llm/llm-pi-ai/src/config.ts)
 
 ## `@deepseek-ai/dsh-llm-replay`
 
@@ -1484,7 +1511,7 @@ export interface Config {
    * fails.
    */
   cwd?: string
-  /** Provider route the child runtime initializes with (default `deepseek`). */
+  /** Provider route the child runtime initializes with (default `deepseek-official`). */
   provider: string
   /** Model the child runtime initializes with (default `deepseek-v4-flash`). */
   model: string
@@ -1909,7 +1936,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/web/tool-web/src/index.ts:35`](../packages/web/tool-web/src/index.ts)
+Source: [`packages/web/tool-web/src/index.ts:37`](../packages/web/tool-web/src/index.ts)
 
 ## `@deepseek-ai/dsh-tool-workflow`
 
@@ -1955,7 +1982,7 @@ export interface Config {
 export type ToolPresentationMode = 'native' | 'code' | 'both'
 ```
 
-Source: [`packages/core/tools/src/index.ts:578`](../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:582`](../packages/core/tools/src/index.ts)
 
 ## `@deepseek-ai/dsh-tui`
 
@@ -2298,6 +2325,7 @@ Abstract service classes — a deployment loads a concrete implementation packag
 - `@deepseek-ai/dsh-bash` — abstract `BashExecutor` ([`packages/bash/bash/src/index.ts`](../packages/bash/bash/src/index.ts))
 - `@deepseek-ai/dsh-code-runtime` — abstract `CodeRuntime` ([`packages/code-runtime/code-runtime/src/index.ts`](../packages/code-runtime/code-runtime/src/index.ts))
 - `@deepseek-ai/dsh-compact` — abstract `CompactService` ([`packages/compact/compact/src/index.ts`](../packages/compact/compact/src/index.ts))
+- `@deepseek-ai/dsh-credentials` — abstract `Credentials` ([`packages/credentials/credentials/src/index.ts`](../packages/credentials/credentials/src/index.ts))
 - `@deepseek-ai/dsh-fs` — abstract `FileSystem` ([`packages/fs/fs/src/index.ts`](../packages/fs/fs/src/index.ts))
 - `@deepseek-ai/dsh-host-directory-picker` — abstract `DirectoryPicker` ([`packages/host/directory-picker/src/index.ts`](../packages/host/directory-picker/src/index.ts))
 - `@deepseek-ai/dsh-sandbox` — abstract `SandboxProvider` ([`packages/sandbox/sandbox/src/index.ts`](../packages/sandbox/sandbox/src/index.ts))
@@ -2317,7 +2345,9 @@ Imported as libraries by other packages; a `cordis.yml` cannot load them.
 - `@deepseek-ai/dsh-acp-snapshot` ([`packages/support/acp-snapshot/src/index.ts`](../packages/support/acp-snapshot/src/index.ts))
 - `@deepseek-ai/dsh-agent-loop-testkit` ([`packages/support/agent-loop-testkit/src/index.ts`](../packages/support/agent-loop-testkit/src/index.ts))
 - `@deepseek-ai/dsh-app-boot` ([`packages/ui/app-boot/src/index.ts`](../packages/ui/app-boot/src/index.ts))
+- `@deepseek-ai/dsh-atomic-write` ([`packages/util/atomic-write/src/index.ts`](../packages/util/atomic-write/src/index.ts))
 - `@deepseek-ai/dsh-brand` ([`packages/util/brand/src/index.ts`](../packages/util/brand/src/index.ts))
+- `@deepseek-ai/dsh-client-schema-form` ([`packages/client/schema-form/src/index.ts`](../packages/client/schema-form/src/index.ts))
 - `@deepseek-ai/dsh-client-test-runtime` ([`packages/client/test-runtime/src/index.ts`](../packages/client/test-runtime/src/index.ts))
 - `@deepseek-ai/dsh-client-ui-primitives` ([`packages/client/ui-primitives/src/index.ts`](../packages/client/ui-primitives/src/index.ts))
 - `@deepseek-ai/dsh-client-ui-slots` ([`packages/client/ui-slots/src/index.ts`](../packages/client/ui-slots/src/index.ts))
diff --git a/docs/cookbook/adding-a-tool.i18n.yaml b/docs/cookbook/adding-a-tool.i18n.yaml
index 423737be39..29ad71c634 100644
--- a/docs/cookbook/adding-a-tool.i18n.yaml
+++ b/docs/cookbook/adding-a-tool.i18n.yaml
@@ -1,6 +1,6 @@
 # Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
-#   pnpm run verify-translation-pairing --write
-adding-a-tool.md: d06e3d8e3c7da1f71a55bf9c4f56cd4b2cc03697
-adding-a-tool.zh.md: 53f608eba3b26b124f873990fa13ce1572c0baf2
+#   pnpm run verify-translation-pairing --write docs/cookbook/adding-a-tool.md
+adding-a-tool.md: a85de0feeeee307ac645f8c2967bb44521d059a8
+adding-a-tool.zh.md: 8e4e6a1128f4f2ad3b4d42c2b88edaf4d8d89af1
diff --git a/docs/cookbook/adding-a-tool.md b/docs/cookbook/adding-a-tool.md
index d06e3d8e3c..a85de0feee 100644
--- a/docs/cookbook/adding-a-tool.md
+++ b/docs/cookbook/adding-a-tool.md
@@ -78,6 +78,7 @@ Both methods return a **`card`-tagged render intent** — pick the card kind tha
   - `generic` supplies an optional title and content.
   - `terminal` supplies raw output and optional exit metadata; each UI renders its capable or fallback view.
   - `diff` supplies applied hunks, often derived by `output.presentationMeta` and carried in persisted `result.meta` so replay reproduces them. Mutation tools keep a diff result because the completed view replaces the pending card.
+  - `web` supplies a completed web retrieval, discriminated by `kind: 'search' | 'fetch'` (the structured search sources or the fetch summary), derived from `result.meta`; it carries no body copy, so a UI without the `web` capability falls back to the raw result content. (tool-web `web_search`/`web_fetch`.)
 
 Hard rules (they bite if broken):
 
diff --git a/docs/cookbook/adding-a-tool.zh.md b/docs/cookbook/adding-a-tool.zh.md
index 53f608eba3..8e4e6a1128 100644
--- a/docs/cookbook/adding-a-tool.zh.md
+++ b/docs/cookbook/adding-a-tool.zh.md
@@ -78,6 +78,7 @@ producer 提供同步的 `cancel`、在资源清理后 settle 且不 reject 的
   - `generic` 提供可选的标题和内容。
   - `terminal` 提供原始输出和可选的退出元数据；各 UI 根据自身能力渲染对应视图或回退视图。
   - `diff` 提供已应用的 hunk，通常由 `output.presentationMeta` 派生并通过持久化的 `result.meta` 携带，使回放能重现它们。变更类工具保留 diff 结果，因为完成后的视图会替换 pending 卡片。
+  - `web` 提供已完成的 web 检索，以 `kind: 'search' | 'fetch'` 区分（结构化的搜索来源或抓取摘要），由 `result.meta` 派生；它不携带正文副本，因此不具备 `web` 能力的 UI 回退到原始结果内容。（tool-web `web_search`／`web_fetch`。）
 
 硬性规则（违反会出问题）：
 
diff --git a/docs/cordis-catalog/events.md b/docs/cordis-catalog/events.md
index 5e4521bd77..8ccc0f3d87 100644
--- a/docs/cordis-catalog/events.md
+++ b/docs/cordis-catalog/events.md
@@ -439,6 +439,32 @@ A command was registered or unregistered. This is an unfiltered registry notific
 
 Source: [`packages/ui/commands/src/index.ts:154`](../../packages/ui/commands/src/index.ts)
 
+## `credentials/*`
+
+### `credentials/updated` — emit
+
+Committed change to a provider-managed credential source: a `set`, an `unset`, or an external edit observed in storage. Ambient process-environment changes are not observable and never emit. Listener failures are contained and logged — a sync throw and an async rejection alike — without changing the committed operation's outcome, except `INVARIANT`-coded failures, which rethrow after every listener ran; that rethrow reaches the emitter only from synchronous listeners, so invariant checks on this event must not be async functions.
+
+```ts cordis-catalog
+/**
+ * Committed change to a provider-managed credential source: a `set`, an
+ * `unset`, or an external edit observed in storage. Ambient
+ * process-environment changes are not observable and never emit. Listener
+ * failures are contained and logged — a sync throw and an async rejection
+ * alike — without changing the committed operation's outcome, except
+ * `INVARIANT`-coded failures, which rethrow after every listener ran;
+ * that rethrow reaches the emitter only from synchronous listeners, so
+ * invariant checks on this event must not be async functions.
+ * @param ref - the reference whose stored value changed.
+ * @mode emit
+ */
+'credentials/updated'(ref: CredentialRef): void
+```
+
+Types: [CredentialRef](../core-data-structures/credentials.md)
+
+Source: [`packages/credentials/credentials/src/index.ts:67`](../../packages/credentials/credentials/src/index.ts)
+
 ## `domain/*`
 
 ### `domain/changed` — emit
@@ -545,6 +571,25 @@ Source: [`packages/goal/goal/src/domain.ts:135`](../../packages/goal/goal/src/do
 
 ## `llm/*`
 
+### `llm/adapters-updated` — emit
+
+The provider topology changed: an adapter registered or unregistered routes, or the configurable-provider directory gained or lost entries. This is a payload-free registry notification fired at each commit point (including registration disposal); consumers re-read `listProviders()`, `listModels()`, or `listConfigurableProviders()` for the new state. Observer failures are contained and cannot veto the registry mutation.
+
+```ts cordis-catalog
+/**
+ * The provider topology changed: an adapter registered or unregistered
+ * routes, or the configurable-provider directory gained or lost entries.
+ * This is a payload-free registry notification fired at each commit point
+ * (including registration disposal); consumers re-read `listProviders()`,
+ * `listModels()`, or `listConfigurableProviders()` for the new state.
+ * Observer failures are contained and cannot veto the registry mutation.
+ * @mode emit
+ */
+'llm/adapters-updated'(): void
+```
+
+Source: [`packages/llm/llm/src/index.ts:70`](../../packages/llm/llm/src/index.ts)
+
 ### `llm/stream` — waterfall
 
 Waterfall around every streaming model call (retry, replay, routing). Bound to the LlmService; call `next()` to reach the resolved adapter's stream, or yield your own chunks to short-circuit.
@@ -567,7 +612,7 @@ Waterfall around every streaming model call (retry, replay, routing). Bound to t
 
 Types: [GenerateOptions](../core-data-structures/core.md) · [LlmService](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
 
-Source: [`packages/llm/llm/src/index.ts:58`](../../packages/llm/llm/src/index.ts)
+Source: [`packages/llm/llm/src/index.ts:59`](../../packages/llm/llm/src/index.ts)
 
 ## `session/*`
 
@@ -661,6 +706,29 @@ Source: [`packages/core/session/src/index.ts:103`](../../packages/core/session/s
 
 ## `settings/*`
 
+### `settings/document-updated` — emit
+
+One registered namespace's RAW user section changed, whether or not the resolved value did. `settings/updated` is the consumer-facing event and stays deep-equal-gated; this one exists for configuration surfaces, which must learn that a field went from inherited to overridden (same resolved value, different meaning) and that their held revision is stale. Listener containment matches `settings/updated`.
+
+```ts cordis-catalog
+/**
+ * One registered namespace's RAW user section changed, whether or not the
+ * resolved value did. `settings/updated` is the consumer-facing event and
+ * stays deep-equal-gated; this one exists for configuration surfaces,
+ * which must learn that a field went from inherited to overridden (same
+ * resolved value, different meaning) and that their held revision is
+ * stale. Listener containment matches `settings/updated`.
+ * @param ns - the namespace whose stored section changed.
+ * @param revision - the namespace's new revision.
+ * @mode emit
+ */
+'settings/document-updated'(ns: SettingsNamespace, revision: number): void
+```
+
+Types: [SettingsNamespace](../core-data-structures/settings.md)
+
+Source: [`packages/settings/settings/src/index.ts:150`](../../packages/settings/settings/src/index.ts)
+
 ### `settings/updated` — emit
 
 Committed change to one registered namespace's resolved value. Emitted after the provider persisted (for `update`) or published (`provider`) the change; never emitted when the resolved value is deep-equal. Listener failures are contained and logged — a sync throw and an async rejection alike — except `INVARIANT`-coded failures, which rethrow after every listener ran; that rethrow reaches the emitter only from synchronous listeners, so invariant checks on this event must not be async functions.
@@ -686,7 +754,7 @@ Committed change to one registered namespace's resolved value. Emitted after the
 
 Types: [SettingsNamespace](../core-data-structures/settings.md) · [SettingsUpdateSource](../core-data-structures/settings.md)
 
-Source: [`packages/settings/settings/src/index.ts:108`](../../packages/settings/settings/src/index.ts)
+Source: [`packages/settings/settings/src/index.ts:137`](../../packages/settings/settings/src/index.ts)
 
 ## `skills/*`
 
@@ -870,7 +938,7 @@ A tool was registered or unregistered, or a scoped restriction changed (the avai
 'tools/change'(): void
 ```
 
-Source: [`packages/core/tools/src/index.ts:156`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:160`](../../packages/core/tools/src/index.ts)
 
 ### `tools/code-dispatch-log` — waterfall
 
@@ -894,7 +962,7 @@ Shape the DURABLE LOG COPY of one `run_code` sub-dispatch outcome before the bri
 
 Types: [CodeDispatchLog](../core-data-structures/tools.md) · [ContentBlock](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md) · [ToolRegistry](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:138`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:142`](../../packages/core/tools/src/index.ts)
 
 ### `tools/execute` — waterfall
 
@@ -916,7 +984,7 @@ Around-dispatch waterfall for timeout, retry, or metrics. `next()` returns a nor
 
 Types: [Scoped](../core-data-structures/scope.md) · [ToolDispatchExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:113`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:117`](../../packages/core/tools/src/index.ts)
 
 ### `tools/post-execute` — waterfall
 
@@ -939,7 +1007,7 @@ Accept, replace, enrich, or block a normalized dispatch result. `next()` accepts
 
 Types: [PostToolDecision](../core-data-structures/tools.md) · [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:125`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:129`](../../packages/core/tools/src/index.ts)
 
 ### `tools/pre-execute` — waterfall
 
@@ -960,7 +1028,7 @@ Allow, deny, or ask before dispatch. `next()` delegates to allow; missing approv
 
 Types: [PreToolDecision](../core-data-structures/tools.md) · [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:102`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:106`](../../packages/core/tools/src/index.ts)
 
 ### `tools/result` — emit
 
@@ -979,7 +1047,7 @@ Observe the frozen, lossless-JSON final outcome. Listener failures are contained
 
 Types: [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:146`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:150`](../../packages/core/tools/src/index.ts)
 
 ## `workflow/*`
 
diff --git a/docs/cordis-catalog/services.md b/docs/cordis-catalog/services.md
index 1f33303269..8044313759 100644
--- a/docs/cordis-catalog/services.md
+++ b/docs/cordis-catalog/services.md
@@ -488,6 +488,52 @@ Types: [CompactionResult](../core-data-structures/compaction.md) · [CompactionT
 
 Source: [`packages/compact/compact/src/index.ts:54`](../../packages/compact/compact/src/index.ts)
 
+## `ctx.credentials` — `Credentials` (abstract seam)
+
+Abstract credential service. Providers implement the four operations over their source layers; one seam-wide rule binds them all: an empty stored value is absent everywhere — `resolve` skips it, `describe` reports it unconfigured — so a blank never masquerades as a configured secret.
+
+```ts cordis-catalog
+/**
+ * Resolve one reference to its current value. Resolution is per call:
+ * consumers re-resolve at each operation and must not cache across
+ * operations — that per-operation read is what makes a changed credential
+ * reach the next operation without a restart.
+ * @param ref - the reference to resolve.
+ * @returns the value and its source, or `undefined` while unconfigured.
+ */
+abstract resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined>
+
+/**
+ * Describe one reference for configuration surfaces without exposing the
+ * value.
+ * @param ref - the reference to describe.
+ * @returns configured state, supplying source, and writability.
+ */
+abstract describe(ref: CredentialRef): Promise<CredentialInfo>
+
+/**
+ * Durably store one value in the provider-managed writable source. Rejects
+ * while a read-only source shadows the reference — the write would appear
+ * to succeed while resolution keeps returning the shadowing value — and
+ * rejects an empty value (use {@link unset}).
+ * @param ref - the reference to store.
+ * @param value - the non-empty secret value.
+ */
+abstract set(ref: CredentialRef, value: string): Promise<void>
+
+/**
+ * Remove one reference from the provider-managed writable source; removing
+ * an absent reference is a no-op. Rejects while a read-only source shadows
+ * the reference, like {@link set}.
+ * @param ref - the reference to remove.
+ */
+abstract unset(ref: CredentialRef): Promise<void>
+```
+
+Types: [CredentialInfo](../core-data-structures/credentials.md) · [CredentialRef](../core-data-structures/credentials.md) · [ResolvedCredential](../core-data-structures/credentials.md)
+
+Source: [`packages/credentials/credentials/src/index.ts:77`](../../packages/credentials/credentials/src/index.ts)
+
 ## `ctx.directoryPicker` — `DirectoryPicker` (abstract seam)
 
 Abstract directory-picking service. Subclass, implement `capability()`, and load the subclass as a plugin — it registers as `ctx.directoryPicker` (one implementation per context; loading a second throws, cordis' standard duplicate-service behavior). The capability object must be stable for the service lifetime: consumers may capture it across calls.
@@ -744,9 +790,9 @@ The abstract `llm` service: an adapter registry plus a streaming model-call surf
  * Disposed with the fiber.
  * @param providers - every provider route this adapter should serve.
  * @param adapter - the adapter that streams calls for those providers.
- * @returns the disposer that unregisters all of them.
+ * @returns the disposer, carrying {@link AdapterRegistrationHandle.replace}.
  */
-registerAdapter(providers: string[], adapter: LlmAdapter): () => void
+registerAdapter(providers: string[], adapter: LlmAdapter): AdapterRegistrationHandle
 
 /**
  * Describe provider routes with a registered adapter.
@@ -754,6 +800,22 @@ registerAdapter(providers: string[], adapter: LlmAdapter): () => void
  */
 listProviders(): LlmProviderInfo[]
 
+/**
+ * Declare provider routes an adapter plugin can activate through
+ * configuration. Registration is all-or-nothing: an empty list, invalid
+ * entry, or a provider already declared by any registration throws
+ * `LlmError` without registering the rest. Disposed with the fiber.
+ * @param entries - every configurable provider this plugin owns.
+ * @returns the disposer that withdraws all of them.
+ */
+registerConfigurableProviders(entries: readonly LlmConfigurableProvider[]): () => void
+
+/**
+ * List every declared configurable provider, registered or dormant.
+ * @returns detached directory entries in declaration order.
+ */
+listConfigurableProviders(): LlmConfigurableProvider[]
+
 /**
  * Resolve the retry policy captured when one provider route was registered.
  * @param provider - registered provider route to inspect.
@@ -782,7 +844,7 @@ async resolveModelInfo( provider: string, model: string, signal?: AbortSignal, )
 
 /**
  * Validate a conversation call config against its exact model capability and
- * materialize an adapter-configured default. Unsupported explicit efforts
+ * materialize adapter-configured defaults. Unsupported explicit efforts
  * reject before provider I/O; no clamping or aliasing is performed. This
  * standalone query does not bind a later dispatch; use {@link prepareCall}
  * when logging and streaming must share one adapter registration.
@@ -818,9 +880,9 @@ async prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise<Prepared
 stream(options: GenerateOptions): AsyncIterable<StreamChunk>
 ```
 
-Types: [GenerateOptions](../core-data-structures/core.md) · [LlmAdapter](../core-data-structures/llm-streaming.md) · [LlmCallConfig](../core-data-structures/core.md) · [LlmModelInfo](../core-data-structures/core.md) · [LlmProviderInfo](../core-data-structures/core.md) · [LlmResolvedModelInfo](../core-data-structures/core.md) · [PreparedLlmCall](../core-data-structures/llm-streaming.md) · [ResolvedRetryPolicy](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
+Types: [AdapterRegistrationHandle](../core-data-structures/core.md) · [GenerateOptions](../core-data-structures/core.md) · [LlmAdapter](../core-data-structures/llm-streaming.md) · [LlmCallConfig](../core-data-structures/core.md) · [LlmConfigurableProvider](../core-data-structures/core.md) · [LlmModelInfo](../core-data-structures/core.md) · [LlmProviderInfo](../core-data-structures/core.md) · [LlmResolvedModelInfo](../core-data-structures/core.md) · [PreparedLlmCall](../core-data-structures/llm-streaming.md) · [ResolvedRetryPolicy](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
 
-Source: [`packages/llm/llm/src/index.ts:191`](../../packages/llm/llm/src/index.ts)
+Source: [`packages/llm/llm/src/index.ts:229`](../../packages/llm/llm/src/index.ts)
 
 ## `ctx.permission` — `PermissionService`
 
@@ -1590,7 +1652,7 @@ fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId):
 
 Types: [CreateSessionOptions](../core-data-structures/persistence.md) · [Session](../core-data-structures/session.md) · [SessionId](../core-data-structures/core.md)
 
-Source: [`packages/core/session/src/index.ts:714`](../../packages/core/session/src/index.ts)
+Source: [`packages/core/session/src/index.ts:739`](../../packages/core/session/src/index.ts)
 
 ## `ctx.sessionTitle` — `SessionTitleService`
 
@@ -1657,10 +1719,13 @@ Abstract settings service. Providers implement raw-document storage (`load`/`per
 register<T>(ns: SettingsNamespace, schema: z<T>, options?: SettingsRegisterOptions<T>): SettingsScope<T>
 
 /**
- * Describe every registered namespace for configuration surfaces.
+ * Describe every registered namespace for configuration surfaces, including
+ * the composition `base` and raw user layers so a form can mark which fields
+ * the user overrode (presence in `user`) and what a reset returns to.
+ * @param options - redaction switch; wire surfaces must redact.
  * @returns one descriptor per registered namespace, in registration order.
  */
-describe(): SettingsDescriptor[]
+describe(options?: SettingsDescribeOptions): SettingsDescriptor[]
 
 /**
  * Read one registered namespace's resolved value.
@@ -1677,8 +1742,10 @@ get(ns: SettingsNamespace): unknown
  * merging over the previous write's committed section.
  * @param ns - the registered namespace to update.
  * @param patch - plain-object patch over the user section.
+ * @param expectedRevision - the descriptor `revision` the caller read; a
+ *   namespace that moved past it rejects with {@link SettingsConflictError}.
  */
-async update(ns: SettingsNamespace, patch: object): Promise<void>
+async update(ns: SettingsNamespace, patch: object, expectedRevision?: number): Promise<void>
 
 /**
  * Replace one registered namespace's user section wholesale, validate,
@@ -1687,13 +1754,29 @@ async update(ns: SettingsNamespace, patch: object): Promise<void>
  * merge-only patch cannot express (`replace({})` re-inherits everything).
  * @param ns - the registered namespace to replace.
  * @param section - the complete next user section.
+ * @param expectedRevision - the descriptor `revision` the caller read; a
+ *   namespace that moved past it rejects with {@link SettingsConflictError}.
  */
-async replace(ns: SettingsNamespace, section: object): Promise<void>
+async replace(ns: SettingsNamespace, section: object, expectedRevision?: number): Promise<void>
+
+/**
+ * Apply path-addressed edits to one registered namespace's user section,
+ * validate, persist, then commit and emit. The ops are applied to the
+ * section as it stands when the write reaches the front of the queue, so a
+ * caller never has to restate fields it did not touch — and, crucially,
+ * cannot delete fields it never saw. This is the write path for any caller
+ * holding a redacted view; `replace` remains the wholesale reset.
+ * @param ns - the registered namespace to edit.
+ * @param ops - ordered path edits; later ops observe earlier ones.
+ * @param expectedRevision - the descriptor `revision` the caller read; a
+ *   namespace that moved past it rejects with {@link SettingsConflictError}.
+ */
+async mutate(ns: SettingsNamespace, ops: readonly SettingsPathOp[], expectedRevision?: number): Promise<void>
 ```
 
-Types: [SettingsDescriptor](../core-data-structures/settings.md) · [SettingsNamespace](../core-data-structures/settings.md) · [SettingsRegisterOptions](../core-data-structures/settings.md) · [SettingsScope](../core-data-structures/settings.md)
+Types: [SettingsDescribeOptions](../core-data-structures/settings.md) · [SettingsDescriptor](../core-data-structures/settings.md) · [SettingsNamespace](../core-data-structures/settings.md) · [SettingsPathOp](../core-data-structures/settings.md) · [SettingsRegisterOptions](../core-data-structures/settings.md) · [SettingsScope](../core-data-structures/settings.md)
 
-Source: [`packages/settings/settings/src/index.ts:250`](../../packages/settings/settings/src/index.ts)
+Source: [`packages/settings/settings/src/index.ts:365`](../../packages/settings/settings/src/index.ts)
 
 ## `ctx.skills` — `SkillService`
 
@@ -2230,7 +2313,7 @@ async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>
 
 Types: [ScopeKey](../core-data-structures/scope.md) · [ToolDefinition](../core-data-structures/tools.md) · [ToolExecutionInput](../core-data-structures/tools.md) · [ToolExecutionMode](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolGuard](../core-data-structures/tools.md) · [ToolRestriction](../core-data-structures/tools.md) · [ToolSchema](../core-data-structures/tools.md)
 
-Source: [`packages/core/tools/src/index.ts:700`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:704`](../../packages/core/tools/src/index.ts)
 
 ## `ctx.tui` — `TuiExtensionService` (abstract seam)
 
diff --git a/docs/core-data-structures/core.i18n.yaml b/docs/core-data-structures/core.i18n.yaml
index 28a148d7ab..82ef063bec 100644
--- a/docs/core-data-structures/core.i18n.yaml
+++ b/docs/core-data-structures/core.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/core.md
-core.md: a12e96b4156b4ccd8f6f0c453224ed57d6040966
-core.zh.md: ac10c801bde8898ebd3393b05a94cc63627e1b89
+core.md: 5ed6a47c5488005d41fdac9349e4c9d1c550d13d
+core.zh.md: 1b16b7ec994c6fccd6fedf1508dec6b1b057edf3
diff --git a/docs/core-data-structures/core.md b/docs/core-data-structures/core.md
index a12e96b415..5ed6a47c54 100644
--- a/docs/core-data-structures/core.md
+++ b/docs/core-data-structures/core.md
@@ -25,6 +25,7 @@ Everything else is documented on a **sub-page**, not here. The rule that draws t
 | [session.md](session.md) | the full `SessionEventMap` variant catalog, `TurnTrigger`/`TurnEndReason`, `deriveMessages()`, execution enclosure, and standalone events |
 | [persistence.md](persistence.md) | the durability seam: `SessionPersistence`, JSONL + SQLite backends, `session/flush`, crash recovery, `SessionHeader` |
 | [settings.md](settings.md) | the user-settings seam: `SettingsNamespace` registration, layered resolution (defaults → composition `base` → user document), owner scopes, hot commits |
+| [credentials.md](credentials.md) | the credential seam: `CredentialRef` references (never values) in configuration, per-operation resolution, UI-safe `CredentialInfo`, provider source layers |
 | [session-query.md](session-query.md) | logical records, bounded exact-event reads, relationship traces, semantic filters/documents, and full-text result pages |
 | [session-title.md](session-title.md) | durable title snapshots, source provenance, and the asynchronous provider contract |
 | [system-prompt.md](system-prompt.md) | per-assembly context, tool-provider results, prompt sections, and cooperative assembly |
@@ -182,6 +183,34 @@ Source: [`packages/llm/llm/src/types.ts`](../../packages/llm/llm/src/types.ts)
 
 Provider and model discovery uses small provider-neutral descriptors. A model catalog is advisory: routing still keys on a registered provider, and an adapter may accept unlisted model ids.
 
+Registering an adapter returns a handle: the disposer, plus the atomic route replacement a plugin whose route set is user-configurable needs.
+
+```ts type-equiv
+/**
+ * What {@link LlmService.registerAdapter} returns: the disposer, plus an
+ * atomic route replacement for the same adapter instance.
+ */
+interface AdapterRegistrationHandle {
+  /** Release every route this registration currently holds. */
+  (): void
+  /**
+   * Replace this registration's routes with `providers`, keeping the same
+   * adapter instance. The candidate set is validated in full first — a
+   * conflict with another adapter, an invalid name, or bad provider metadata
+   * throws and leaves the current routes untouched — and the swap itself is
+   * one synchronous section, so no request can observe a gap. An empty array
+   * is legal here (a settings section that emptied holds zero routes while
+   * staying registered), unlike an empty initial registration.
+   *
+   * Throws `LlmError` with code `REGISTRATION_DISPOSED` once the registration
+   * has been released: its routes are gone and its disposer has already run,
+   * so anything registered afterwards would have no owner left to release it.
+   * @param providers - the complete next route set for this registration.
+   */
+  replace(providers: string[]): void
+}
+```
+
 ```ts type-equiv
 /** Display metadata for one registered provider route. */
 interface LlmProviderInfo {
@@ -192,6 +221,30 @@ interface LlmProviderInfo {
 }
 ```
 
+Adapter plugins additionally declare which routes *could* run through `registerConfigurableProviders()`, addressing each one's user-settings section, so configuration surfaces can offer dormant providers before any route registers.
+
+```ts type-equiv
+/**
+ * One provider route an adapter plugin can activate through configuration,
+ * whether or not the route is currently registered. Configuration surfaces
+ * merge this directory with `listProviders()` to offer every configurable
+ * provider alongside its live/dormant state.
+ */
+interface LlmConfigurableProvider {
+  /** Provider route key this entry activates when configured. */
+  provider: string
+  /** Human-readable provider name for configuration surfaces. */
+  displayName: string
+  /** User-settings namespace whose section configures this provider. */
+  settingsNs: string
+  /**
+   * Path from that namespace's section root to this provider's profile
+   * object; empty when the whole section is the profile.
+   */
+  settingsPath: readonly string[]
+}
+```
+
 ```ts type-equiv
 /** One adapter-discovered model; catalog membership is advisory, not request validation. */
 interface LlmModelInfo {
@@ -206,7 +259,7 @@ interface LlmModelInfo {
 }
 ```
 
-Correctness-sensitive metadata is resolved separately from the advisory catalog and is owned by the adapter serving the exact route. Context capacity and reasoning choices share one exact-model result so consumers do not repeat authoritative model resolution.
+Correctness-sensitive metadata is resolved separately from the advisory catalog and is owned by the adapter serving the exact route. Context capacity, adapter call defaults, and reasoning choices share one exact-model result so consumers do not repeat authoritative model resolution.
 
 ```ts type-equiv
 /** Provider-owned context capacity for one exact provider/model route. */
@@ -253,6 +306,8 @@ interface LlmModelReasoningInfo {
 interface LlmResolvedModelInfo extends LlmModelInfo {
   /** Provider-owned context capacity when known. */
   context?: LlmModelContext
+  /** Adapter-configured per-request output cap materialized when callers omit one. */
+  defaultMaxTokens?: number
   /** Adapter-owned selectable reasoning levels when exposed. */
   reasoning?: LlmModelReasoningInfo
 }
@@ -339,9 +394,9 @@ The model-facing `ToolSchema` is the wire shape; the registered `ToolDefinition`
 
 ### The request envelope: `LlmCallConfig` and the logged header
 
-The loop builds each request from logged state. `EpochHeader` records call config, rendered prompt, and authoritative returned tool order (configured by `toolOrder`, or lexicographic when unset) through full `request/header` snapshots. Together with derived history, this makes the request reconstructable from the session log. See [session.md](session.md#the-request-header-event-requestheader) and the [reconstructability Agent Note](../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md).
+The loop builds each request from logged state. `EpochHeader` records call config, adapter-default provenance, rendered prompt, and authoritative returned tool order (configured by `toolOrder`, or lexicographic when unset) through full `request/header` snapshots. Together with derived history, this makes the request reconstructable from the session log. See [session.md](session.md#the-request-header-event-requestheader) and the [reconstructability Agent Note](../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md).
 
-`agent/request` receives a frozen call-config seed and may return a replacement to switch provider, model, reasoning effort, or sampling. After the waterfall, the loop prepares the exact model capability under the turn signal, rejects unsupported explicit effort ids without clamping, materializes an adapter-configured default, and logs the effective value. The prepared call keeps one adapter registration through dispatch. Requests reaching `llm/stream` are deep-frozen, so mutation throws, and carry a process-local loop identity so observers do not confuse separately logged frozen auxiliary calls with conversation requests.
+`agent/request` receives a frozen call-config seed and may return a replacement to switch provider, model, reasoning effort, or sampling. Before the waterfall, the loop removes values marked as adapter defaults so exact-model preparation materializes the selected route's current values; unmarked explicit settings remain in the proposal. After the waterfall, preparation rejects unsupported explicit effort ids without clamping and logs the effective config plus provenance under the turn signal. The prepared call keeps one adapter registration through dispatch. Requests reaching `llm/stream` are deep-frozen, so mutation throws, and carry a process-local loop identity so observers do not confuse separately logged frozen auxiliary calls with conversation requests.
 
 On the wire, a loop-built request reads the `system` slot (the rendered prompt assembly) followed by the derived history — the boundary snapshot, whose tail is the newest `user/message` on a turn's first step and the previous step's tool results on later steps. The dev invariant recomputes exactly this equation against every loop-built request.
 
@@ -364,6 +419,17 @@ interface LlmCallConfig {
 }
 ```
 
+```ts type-equiv
+/**
+ * Effective config fields supplied by exact-model adapter resolution rather
+ * than by the caller's request proposal.
+ */
+interface LlmCallConfigAdapterDefaults {
+  reasoningEffort?: true
+  maxTokens?: true
+}
+```
+
 ## Sessions
 
 A `Session` is an **append-only log** of typed `SessionEvent`s — the single source of truth. The LLM message history is *derived* from the log (`deriveMessages()`), not stored separately. The event vocabulary derives from `SessionEventMap`:
@@ -605,7 +671,7 @@ interface Agent {
 }
 ```
 
-`AgentStatus` is `'idle' | 'running'`, and `SessionId` is branded. Disposal removes the agent from the registry and emits `agent/disposed`; it is not a terminal status value. `running` describes the driver-wide drain interval and may span consecutive queued turns; it does not prove a turn is still open. `acceptsNextStep` is the narrower routing predicate for callers that must choose between steering the current admission/turn and submitting a fresh admitted prompt. `AgentOptions` is merge-extensible: core declares `provider?`, `model?`, and `maxTokens?` (dispatch requires provider and model after `agent/request`). When present, `maxTokens` must be a positive safe integer and caps every conversation-model request; omission leaves the provider default in control. Persona belongs to `dsh-system-prompt`: an agent-scoped `deployment:persona` may shadow the global default.
+`AgentStatus` is `'idle' | 'running'`, and `SessionId` is branded. Disposal removes the agent from the registry and emits `agent/disposed`; it is not a terminal status value. `running` describes the driver-wide drain interval and may span consecutive queued turns; it does not prove a turn is still open. `acceptsNextStep` is the narrower routing predicate for callers that must choose between steering the current admission/turn and submitting a fresh admitted prompt. `AgentOptions` is merge-extensible: core declares `provider?`, `model?`, and `maxTokens?` (dispatch requires provider and model after `agent/request`). When present, `maxTokens` must be a positive safe integer and caps every conversation-model request; omission allows the exact-model adapter default to materialize before the request header, or otherwise leaves provider behavior unchanged. Persona belongs to `dsh-system-prompt`: an agent-scoped `deployment:persona` may shadow the global default.
 
 The cause is a TypeScript-enforced same-process input. An active `TurnCancellation` holder copies its discriminant into the runtime-only `AbortSignal.reason` and is retired before `turn/end` publication; the frozen `AbortSignal.reason` remains readable after that retirement. Only the loop reads the cause (`user`, `parent`, or lifecycle-only `disposed`) back off its own machine-private signal at settlement — there is no public reader, and a signal grants cooperating listeners no classification authority. Durable `turn/end` retains the coarse `{ kind: 'aborted' }` outcome; request provenance would require a separate durable event rather than overloading the terminal result.
 
diff --git a/docs/core-data-structures/core.zh.md b/docs/core-data-structures/core.zh.md
index ac10c801bd..1b16b7ec99 100644
--- a/docs/core-data-structures/core.zh.md
+++ b/docs/core-data-structures/core.zh.md
@@ -25,6 +25,7 @@ harness 是一个微内核：一个极小的核心加上众多插件。大多数
 | [session.md](session.md) | 完整的 `SessionEventMap` 变体目录、`TurnTrigger`/`TurnEndReason`、`deriveMessages()`、执行封闭与独立事件 |
 | [persistence.md](persistence.md) | 持久性 seam：`SessionPersistence`、JSONL + SQLite 后端、`session/flush`、崩溃恢复、`SessionHeader` |
 | [settings.md](settings.md) | 用户设置 seam：`SettingsNamespace` 注册、分层解析（默认值 → 组合 `base` → 用户文档）、owner scope、热提交 |
+| [credentials.md](credentials.md) | 凭据 seam：配置中的 `CredentialRef` 引用（绝不含值）、按操作解析、对 UI 安全的 `CredentialInfo`、provider 来源层 |
 | [session-query.md](session-query.md) | 逻辑记录、有界精确事件读取、关系追踪、语义筛选器/文档与全文检索结果页 |
 | [session-title.md](session-title.md) | 持久标题快照、来源 provenance 与异步提供方契约 |
 | [system-prompt.md](system-prompt.md) | 逐次组装的上下文、工具提供方结果、提示词段落与协作式组装 |
@@ -188,6 +189,34 @@ interface MessageSourceMap {
 
 提供方与模型发现使用小型、提供方无关的描述符。模型目录仅供参考：路由仍以已注册提供方为键，适配器也可以接受未列出的模型 id。
 
+注册适配器会返回一个句柄：既是释放器，也带有原子的路由替换——路由集合由用户配置决定的插件正需要它。
+
+```ts type-equiv
+/**
+ * What {@link LlmService.registerAdapter} returns: the disposer, plus an
+ * atomic route replacement for the same adapter instance.
+ */
+interface AdapterRegistrationHandle {
+  /** Release every route this registration currently holds. */
+  (): void
+  /**
+   * Replace this registration's routes with `providers`, keeping the same
+   * adapter instance. The candidate set is validated in full first — a
+   * conflict with another adapter, an invalid name, or bad provider metadata
+   * throws and leaves the current routes untouched — and the swap itself is
+   * one synchronous section, so no request can observe a gap. An empty array
+   * is legal here (a settings section that emptied holds zero routes while
+   * staying registered), unlike an empty initial registration.
+   *
+   * Throws `LlmError` with code `REGISTRATION_DISPOSED` once the registration
+   * has been released: its routes are gone and its disposer has already run,
+   * so anything registered afterwards would have no owner left to release it.
+   * @param providers - the complete next route set for this registration.
+   */
+  replace(providers: string[]): void
+}
+```
+
 ```ts type-equiv
 /** Display metadata for one registered provider route. */
 interface LlmProviderInfo {
@@ -198,6 +227,30 @@ interface LlmProviderInfo {
 }
 ```
 
+适配器插件还会通过 `registerConfigurableProviders()` 声明哪些路由*可以*运行，并指明每条路由的用户设置分节，使配置界面能在任何路由注册之前就呈现休眠的提供方。
+
+```ts type-equiv
+/**
+ * One provider route an adapter plugin can activate through configuration,
+ * whether or not the route is currently registered. Configuration surfaces
+ * merge this directory with `listProviders()` to offer every configurable
+ * provider alongside its live/dormant state.
+ */
+interface LlmConfigurableProvider {
+  /** Provider route key this entry activates when configured. */
+  provider: string
+  /** Human-readable provider name for configuration surfaces. */
+  displayName: string
+  /** User-settings namespace whose section configures this provider. */
+  settingsNs: string
+  /**
+   * Path from that namespace's section root to this provider's profile
+   * object; empty when the whole section is the profile.
+   */
+  settingsPath: readonly string[]
+}
+```
+
 ```ts type-equiv
 /** One adapter-discovered model; catalog membership is advisory, not request validation. */
 interface LlmModelInfo {
@@ -212,7 +265,7 @@ interface LlmModelInfo {
 }
 ```
 
-对正确性敏感的元数据与参考目录分开解析，并归服务该确切路由的适配器所有。上下文容量和推理选项共用同一个确切模型结果，消费方因而无需重复执行权威模型解析。
+对正确性敏感的元数据与参考目录分开解析，并归服务该确切路由的适配器所有。上下文容量、适配器调用默认值和推理选项共用同一个确切模型结果，消费方因而无需重复执行权威模型解析。
 
 ```ts type-equiv
 /** Provider-owned context capacity for one exact provider/model route. */
@@ -259,6 +312,8 @@ interface LlmModelReasoningInfo {
 interface LlmResolvedModelInfo extends LlmModelInfo {
   /** Provider-owned context capacity when known. */
   context?: LlmModelContext
+  /** Adapter-configured per-request output cap materialized when callers omit one. */
+  defaultMaxTokens?: number
   /** Adapter-owned selectable reasoning levels when exposed. */
   reasoning?: LlmModelReasoningInfo
 }
@@ -345,9 +400,9 @@ interface ToolSchema {
 
 ### 请求信封：`LlmCallConfig` 与记录的 header
 
-循环从已记录状态构建每个请求。`EpochHeader` 通过完整的 `request/header` 快照记录调用配置、渲染后的提示词以及权威返回工具顺序（由 `toolOrder` 配置；未配置时按字典序）。结合派生历史，请求便可由会话日志重建。见 [session.md](session.md#the-request-header-event-requestheader) 与[可重建性 Agent Note（agent 决策记录）](../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)。
+循环从已记录状态构建每个请求。`EpochHeader` 通过完整的 `request/header` 快照记录调用配置、适配器默认值来源、渲染后的提示词以及权威返回工具顺序（由 `toolOrder` 配置；未配置时按字典序）。结合派生历史，请求便可由会话日志重建。见 [session.md](session.md#the-request-header-event-requestheader) 与[可重建性 Agent Note（agent 决策记录）](../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)。
 
-`agent/request` 接收冻结的调用配置种子，并可返回替代值以切换提供方、模型、推理强度或采样参数。waterfall 结束后，循环会在轮次信号控制下完成确切模型的能力准备，拒绝显式指定但不受支持的推理强度 ID（不自动调整），填入适配器配置的默认值，并记录最终生效值。准备完成的调用直至分派完成始终持有同一项适配器注册。到达 `llm/stream` 的请求会被深度冻结，因此变更会抛异常；请求还携带进程本地循环标识，使观察者不会把单独记录的冻结辅助调用误认成对话请求。
+`agent/request` 接收冻结的调用配置种子，并可返回替代值以切换提供方、模型、推理强度或采样参数。waterfall 开始前，循环会移除标记为适配器默认值的值，使确切模型准备过程填入所选路由的当前值；未带标记的显式设置仍保留在提议中。waterfall 结束后，准备过程会在轮次信号控制下拒绝显式指定但不受支持的推理强度 ID（不自动调整），并记录生效配置及其来源。准备完成的调用直至分派完成始终持有同一项适配器注册。到达 `llm/stream` 的请求会被深度冻结，因此变更会抛异常；请求还携带进程本地循环标识，使观察者不会把单独记录的冻结辅助调用误认成对话请求。
 
 在协议格式上，循环构建的请求先读取 `system` 槽位（渲染后的提示词组装），再读取派生历史——边界快照，其尾部在轮次首步是最新的 `user/message`，在后续步骤是上一步的工具结果。开发不变式针对每个循环构建的请求精确重算此等式。
 
@@ -370,6 +425,17 @@ interface LlmCallConfig {
 }
 ```
 
+```ts type-equiv
+/**
+ * Effective config fields supplied by exact-model adapter resolution rather
+ * than by the caller's request proposal.
+ */
+interface LlmCallConfigAdapterDefaults {
+  reasoningEffort?: true
+  maxTokens?: true
+}
+```
+
 ## 会话
 
 `Session` 是一份类型化 `SessionEvent` 的**仅追加日志**——唯一的真源。LLM（大语言模型）消息历史从日志*派生*（`deriveMessages()`），而非单独存储。事件词汇从 `SessionEventMap` 派生：
@@ -613,7 +679,7 @@ interface Agent {
 }
 ```
 
-`AgentStatus` 为 `'idle' | 'running'`，`SessionId` 是品牌类型。dispose（资源释放）会把 agent 从注册表移除并发出 `agent/disposed`；它不是一个终态 status 值。`running` 描述整个驱动器的排空区间，可能跨越连续的排队轮次；它不能证明某个轮次仍然打开。对于需要在把输入作为 steering 加入当前提示词准入／轮次，还是提交为一个新的待准入提示词之间做选择的调用方，`acceptsNextStep` 才是更窄且准确的路由判断条件。`AgentOptions` 可合并扩展：core 声明 `provider?`、`model?` 与 `maxTokens?`（在 `agent/request` 后，分发要求 provider 与 model 都存在）。提供 `maxTokens` 时，它必须是正安全整数，并限制每次对话模型请求的输出；省略时由提供方默认值控制。Persona 归 `dsh-system-prompt` 所有：agent 作用域的 `deployment:persona` 可以遮蔽全局默认值。
+`AgentStatus` 为 `'idle' | 'running'`，`SessionId` 是品牌类型。dispose（资源释放）会把 agent 从注册表移除并发出 `agent/disposed`；它不是一个终态 status 值。`running` 描述整个驱动器的排空区间，可能跨越连续的排队轮次；它不能证明某个轮次仍然打开。对于需要在把输入作为 steering 加入当前提示词准入／轮次，还是提交为一个新的待准入提示词之间做选择的调用方，`acceptsNextStep` 才是更窄且准确的路由判断条件。`AgentOptions` 可合并扩展：core 声明 `provider?`、`model?` 与 `maxTokens?`（在 `agent/request` 后，分发要求 provider 与 model 都存在）。提供 `maxTokens` 时，它必须是正安全整数，并限制每次对话模型请求的输出；省略时，系统会在写入请求 header 前填入确切模型的适配器默认值，否则提供方行为保持不变。Persona 归 `dsh-system-prompt` 所有：agent 作用域的 `deployment:persona` 可以遮蔽全局默认值。
 
 cause 是由 TypeScript 强制约束的同进程输入。活跃的 `TurnCancellation` 持有者会把其判别字段复制到仅运行时的 `AbortSignal.reason`，并在发布 `turn/end` 前退役；冻结后的 `AbortSignal.reason` 仍可读取。只有 loop 会在结算时从自己机器私有的 signal 上读回 cause（`user`、`parent` 或仅用于生命周期的 `disposed`）——不存在公开的读取器，signal 也不授予协作监听器任何分类权限。持久 `turn/end` 保留粗粒度 `{ kind: 'aborted' }` 结果；若需记录请求 provenance，应使用单独的持久事件，而不是让终态结果承担额外含义。
 
diff --git a/docs/core-data-structures/credentials.i18n.yaml b/docs/core-data-structures/credentials.i18n.yaml
new file mode 100644
index 0000000000..23bb940afe
--- /dev/null
+++ b/docs/core-data-structures/credentials.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/core-data-structures/credentials.md
+credentials.md: 3f6fcd127d01e2c49e17c70c002bebe9f363e951
+credentials.zh.md: b5d2d9e164a85ce090790635c438b768cae4c9ca
diff --git a/docs/core-data-structures/credentials.md b/docs/core-data-structures/credentials.md
new file mode 100644
index 0000000000..3f6fcd127d
--- /dev/null
+++ b/docs/core-data-structures/credentials.md
@@ -0,0 +1,50 @@
+# User Credentials
+
+English | [中文](credentials.zh.md)
+
+The credential seam of [dsh-credentials](../../packages/credentials/credentials) keeps secrets out of configuration: settings sections and `cordis.yml` entries carry *references* (environment-variable names), providers such as [dsh-credentials-local](../../packages/credentials/credentials-local) own the values, and consumers resolve a reference once per operation — the LLM adapters resolve once per model request, so a rotated credential reaches the very next request without any restart. One seam-wide rule binds every provider: an empty stored value is absent everywhere.
+
+Source: [`packages/credentials/credentials/src/index.ts`](../../packages/credentials/credentials/src/index.ts)
+
+## Identity
+
+A reference names one credential as a POSIX-style environment-variable name. The brand keeps references from mixing with other cross-boundary strings; construction validates the shell-identifier shape.
+
+```ts type-equiv
+/** Nominal reference to one credential: a POSIX-style environment-variable name. */
+type CredentialRef = Branded<'CredentialRef'>
+```
+
+## Resolution
+
+`resolve(ref)` returns the value with the provider-defined source layer that supplied it, or `undefined` while unconfigured. Consumers re-resolve at each operation and never cache across operations — that per-operation read is the hot-update mechanism.
+
+```ts type-equiv
+/** One resolved credential value and the source layer that supplied it. */
+interface ResolvedCredential {
+  /** The non-empty secret value. */
+  value: string
+  /** Provider-defined source layer id (the local provider uses `env` and `file`). */
+  source: string
+}
+```
+
+## Description
+
+`describe(ref)` answers configuration surfaces without ever exposing a value: whether the reference resolves, from which layer, and whether `set` would currently succeed. The local provider reports a reference supplied by the live process environment as `writable: false` — a write would appear to succeed while resolution kept returning the shadowing value, so the seam rejects it and the UI can render the reference read-only up front.
+
+```ts type-equiv
+/** Source and writability facts for one reference, safe for configuration UIs — never the value. */
+interface CredentialInfo {
+  /** Whether {@link Credentials.resolve} would currently return a value. */
+  configured: boolean
+  /** Source layer currently supplying the value; absent while unconfigured. */
+  source?: string
+  /** Whether {@link Credentials.set} would currently succeed for this reference. */
+  writable: boolean
+}
+```
+
+## Change commits
+
+`credentials/updated (ref)` fires after a committed change to a provider-managed source — a `set`, an `unset`, or an external edit observed in storage. Ambient process-environment changes are not observable and never emit. Consumers do not need the event (they re-resolve per operation); it exists for configuration surfaces refreshing a "configured" badge.
diff --git a/docs/core-data-structures/credentials.zh.md b/docs/core-data-structures/credentials.zh.md
new file mode 100644
index 0000000000..b5d2d9e164
--- /dev/null
+++ b/docs/core-data-structures/credentials.zh.md
@@ -0,0 +1,50 @@
+# 用户凭据
+
+[English](credentials.md) | 中文
+
+[dsh-credentials](../../packages/credentials/credentials) 的凭据 seam 把机密挡在配置之外：settings 分节与 `cordis.yml` 条目携带的是*引用*（环境变量名），值归 [dsh-credentials-local](../../packages/credentials/credentials-local) 这类 provider 所有，消费方每个操作解析一次引用——LLM 适配器每次模型请求解析一次，因此轮换后的凭据无需任何重启即可作用于紧随其后的下一次请求。一条 seam 级规则约束每个 provider：空的存储值在任何地方都视为不存在。
+
+Source: [`packages/credentials/credentials/src/index.ts`](../../packages/credentials/credentials/src/index.ts)
+
+## 标识
+
+引用以 POSIX 风格环境变量名命名一条凭据。brand 使引用不与其他跨边界字符串混用；构造时校验 shell 标识符形态。
+
+```ts type-equiv
+/** Nominal reference to one credential: a POSIX-style environment-variable name. */
+type CredentialRef = Branded<'CredentialRef'>
+```
+
+## 解析
+
+`resolve(ref)` 返回值，连同供出该值、由 provider 定义的来源层；未配置期间返回 `undefined`。消费方在每个操作中重新解析，绝不跨操作缓存——这次按操作进行的读取正是热更新机制。
+
+```ts type-equiv
+/** One resolved credential value and the source layer that supplied it. */
+interface ResolvedCredential {
+  /** The non-empty secret value. */
+  value: string
+  /** Provider-defined source layer id (the local provider uses `env` and `file`). */
+  source: string
+}
+```
+
+## 描述
+
+`describe(ref)` 在绝不暴露值的前提下回应配置界面：引用当前是否可解析、来自哪一层、`set` 当前能否成功。本地 provider 把由活跃进程环境供值的引用报告为 `writable: false`——那样的写入会表面成功而解析持续返回遮蔽值，因此 seam 直接拒绝，界面也得以提前把该引用渲染为只读。
+
+```ts type-equiv
+/** Source and writability facts for one reference, safe for configuration UIs — never the value. */
+interface CredentialInfo {
+  /** Whether {@link Credentials.resolve} would currently return a value. */
+  configured: boolean
+  /** Source layer currently supplying the value; absent while unconfigured. */
+  source?: string
+  /** Whether {@link Credentials.set} would currently succeed for this reference. */
+  writable: boolean
+}
+```
+
+## 变更提交
+
+`credentials/updated (ref)` 在 provider 管理的来源发生已提交变更后触发——`set`、`unset` 或在存储中观察到的外部编辑。进程环境自身的变化不可观测，永不发出事件。消费方不需要该事件（它们按操作重新解析）；它服务于配置界面刷新「已配置」徽标。
diff --git a/docs/core-data-structures/llm-streaming.i18n.yaml b/docs/core-data-structures/llm-streaming.i18n.yaml
index c3924f184b..7e1ba8b7bb 100644
--- a/docs/core-data-structures/llm-streaming.i18n.yaml
+++ b/docs/core-data-structures/llm-streaming.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/llm-streaming.md
-llm-streaming.md: 6811611768a0ec577360a8ff82792899cf3b8fec
-llm-streaming.zh.md: 35374af6a20086f15384840689dba5aa24351750
+llm-streaming.md: e7500a7985ea1916e206c41e05855701b48fcf00
+llm-streaming.zh.md: 2b61815f2730afdfb93bc06b8ee8925d2f4cac25
diff --git a/docs/core-data-structures/llm-streaming.md b/docs/core-data-structures/llm-streaming.md
index 6811611768..e7500a7985 100644
--- a/docs/core-data-structures/llm-streaming.md
+++ b/docs/core-data-structures/llm-streaming.md
@@ -162,13 +162,15 @@ declare class BlockAssembler {
 
 ## The seam
 
-`LlmAdapter` is the provider seam: subclass, implement `stream()`, and register one adapter instance with `ctx.llm.registerAdapter(providers, adapter)`. `GenerateOptions.provider` selects the registered adapter; `GenerateOptions.model` is passed to that adapter and need not be registered at lifecycle start. Duplicate provider routes fail atomically. Optional `providerRetryPolicy()` is captured per route with normal defaults, while `providerInfo()` and asynchronous `listModels()` feed `LlmService.listProviders()` / `listModels()` with detached selector metadata. That catalog is advisory rather than a request whitelist: the adapter remains authoritative and may accept unlisted model ids. One asynchronous `resolveModel()` query returns exact model identity plus optional correctness-sensitive context capacity and ordered model-owned reasoning ids with an optional deployment default; absent fields mean unavailable metadata or capability, not invalid catalog membership. The resolver receives optional cancellation and must settle promptly after abort. `LlmService.resolveModelInfo()` validates and detaches the aggregate. The service validates and materializes reasoning through `resolveCallConfig()` at the final adapter boundary, so direct calls cannot bypass unsupported-effort rejection; direct dispatch captures one registration before awaiting that resolution. The agent loop instead uses `prepareCall()` to keep the same registration across model resolution, durable header logging, and dispatch. Adapter lookup happens at the terminal continuation of the `llm/stream` waterfall, so a listener may short-circuit the call or route a mutable one-shot request before lookup. The `block-start` / `block-end` `index` correlation and the assembler together mean an adapter only has to emit well-formed chunks — block reassembly is not each adapter's problem. The consumer surface (`ctx.llm.stream()`) and the `llm/stream` waterfall are described in [architecture.md § Content blocks and streaming](../architecture.md#content-blocks-and-streaming-dsh-llm).
+`LlmAdapter` is the provider seam: subclass, implement `stream()`, and register one adapter instance with `ctx.llm.registerAdapter(providers, adapter)`. `GenerateOptions.provider` selects the registered adapter; `GenerateOptions.model` is passed to that adapter and need not be registered at lifecycle start. Duplicate provider routes fail atomically. Optional `providerRetryPolicy()` is captured per route with normal defaults, while `providerInfo()` and asynchronous `listModels()` feed `LlmService.listProviders()` / `listModels()` with detached selector metadata. That catalog is advisory rather than a request whitelist: the adapter remains authoritative and may accept unlisted model ids. One asynchronous `resolveModel()` query returns exact model identity plus optional correctness-sensitive context capacity, an adapter-configured `defaultMaxTokens`, and ordered model-owned reasoning ids with an optional deployment default; absent fields mean unavailable metadata or provider-owned behavior, not invalid catalog membership. The resolver receives optional cancellation and must settle promptly after abort. `LlmService.resolveModelInfo()` validates and detaches the aggregate. At the final adapter boundary, `resolveCallConfig()` materializes the output default only when `maxTokens` is absent and validates and materializes reasoning, so direct calls cannot bypass either configured behavior; direct dispatch captures one registration before awaiting that resolution. The agent loop instead uses `prepareCall()` to keep the same registration across model resolution, durable header logging, and dispatch. Adapter lookup happens at the terminal continuation of the `llm/stream` waterfall, so a listener may short-circuit the call or route a mutable one-shot request before lookup. The `block-start` / `block-end` `index` correlation and the assembler together mean an adapter only has to emit well-formed chunks — block reassembly is not each adapter's problem. The consumer surface (`ctx.llm.stream()`) and the `llm/stream` waterfall are described in [architecture.md § Content blocks and streaming](../architecture.md#content-blocks-and-streaming-dsh-llm).
 
 ```ts type-equiv
 /** One model call whose config and adapter registration were resolved together. */
 interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Config fields materialized by the captured adapter rather than proposed by the caller. */
+  readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
    * Dispatch this call once through the registration captured during
    * preparation. The request's call-config fields must match {@link config};
@@ -215,7 +217,7 @@ declare abstract class LlmAdapter {
    * @param model - exact model id passed to {@link GenerateOptions.model}.
    * @param _signal - cancellation for this exact-model lookup; asynchronous
    *   implementations must settle promptly after it aborts.
-   * @returns provider/model identity plus any context and reasoning metadata.
+   * @returns provider/model identity plus any context, call-default, and reasoning metadata.
    */
   resolveModel(
     provider: string,
diff --git a/docs/core-data-structures/llm-streaming.zh.md b/docs/core-data-structures/llm-streaming.zh.md
index 35374af6a2..2b61815f27 100644
--- a/docs/core-data-structures/llm-streaming.zh.md
+++ b/docs/core-data-structures/llm-streaming.zh.md
@@ -162,13 +162,15 @@ declare class BlockAssembler {
 
 ## seam
 
-`LlmAdapter` 是提供方 seam：创建子类、实现 `stream()`，再用 `ctx.llm.registerAdapter(providers, adapter)` 注册一个适配器实例。`GenerateOptions.provider` 选择已注册适配器；`GenerateOptions.model` 会传给该适配器，无需在生命周期启动时注册。重复提供方路由会原子失败。可选的 `providerRetryPolicy()` 会按路由捕获并填入 normal 默认值，`providerInfo()` 与异步 `listModels()` 方法则为 `LlmService.listProviders()` / `listModels()` 提供分离的 selector 元数据。该目录仅供参考，不是请求白名单：适配器仍是权威，并可接受未列出的模型 id。单次异步 `resolveModel()` 查询返回确切模型身份，以及可选的对正确性敏感的上下文容量、由模型持有的有序推理强度 ID 和部署默认值；字段缺失表示元数据或能力不可用，而不表示目录成员关系无效。解析器会接收可选的取消信号，并且必须在信号中止后迅速完成结算。`LlmService.resolveModelInfo()` 会校验聚合结果并返回分离值。服务通过最终适配器边界的 `resolveCallConfig()` 校验推理强度并填入默认值，因此直接调用也无法绕过对不支持推理强度的拒绝；直接分派会在等待解析前捕获一项适配器注册。agent loop 则使用 `prepareCall()`，使模型解析、请求头持久记录和分派全程使用同一项注册。适配器查找发生在 `llm/stream` waterfall（瀑布式事件）的终端 continuation，因此 listener 可以在查找前短路调用，或路由一个可变的一次性请求。`block-start` / `block-end` 的 `index` 关联与 assembler 共同意味着适配器只需 emit 格式正确的分片——块重组不是每个适配器各自的问题。消费方 surface（`ctx.llm.stream()`）与 `llm/stream` waterfall 见 [architecture.md § 内容块与流式传输](../architecture.md#content-blocks-and-streaming-dsh-llm)。
+`LlmAdapter` 是提供方 seam：创建子类、实现 `stream()`，再用 `ctx.llm.registerAdapter(providers, adapter)` 注册一个适配器实例。`GenerateOptions.provider` 选择已注册适配器；`GenerateOptions.model` 会传给该适配器，无需在生命周期启动时注册。重复提供方路由会原子失败。可选的 `providerRetryPolicy()` 会按路由捕获并填入 normal 默认值，`providerInfo()` 与异步 `listModels()` 方法则为 `LlmService.listProviders()` / `listModels()` 提供分离的 selector 元数据。该目录仅供参考，不是请求白名单：适配器仍是权威，并可接受未列出的模型 id。单次异步 `resolveModel()` 查询返回确切模型身份，以及可选的对正确性敏感的上下文容量、适配器配置的 `defaultMaxTokens`、由模型持有的有序推理强度 ID 和部署默认值；字段缺失表示元数据不可用或保留提供方持有的行为，而不表示目录成员关系无效。解析器会接收可选的取消信号，并且必须在信号中止后迅速完成结算。`LlmService.resolveModelInfo()` 会校验聚合结果并返回分离值。在最终适配器边界，`resolveCallConfig()` 仅在 `maxTokens` 缺失时填入输出默认值，并校验和填入推理强度，因此直接调用也无法绕过任何一项已配置行为；直接分派会在等待解析前捕获一项适配器注册。agent loop 则使用 `prepareCall()`，使模型解析、请求头持久记录和分派全程使用同一项注册。适配器查找发生在 `llm/stream` waterfall（瀑布式事件）的终端 continuation，因此 listener 可以在查找前短路调用，或路由一个可变的一次性请求。`block-start` / `block-end` 的 `index` 关联与 assembler 共同意味着适配器只需 emit 格式正确的分片——块重组不是每个适配器各自的问题。消费方 surface（`ctx.llm.stream()`）与 `llm/stream` waterfall 见 [architecture.md § 内容块与流式传输](../architecture.md#content-blocks-and-streaming-dsh-llm)。
 
 ```ts type-equiv
 /** One model call whose config and adapter registration were resolved together. */
 interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Config fields materialized by the captured adapter rather than proposed by the caller. */
+  readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
    * Dispatch this call once through the registration captured during
    * preparation. The request's call-config fields must match {@link config};
@@ -215,7 +217,7 @@ declare abstract class LlmAdapter {
    * @param model - exact model id passed to {@link GenerateOptions.model}.
    * @param _signal - cancellation for this exact-model lookup; asynchronous
    *   implementations must settle promptly after it aborts.
-   * @returns provider/model identity plus any context and reasoning metadata.
+   * @returns provider/model identity plus any context, call-default, and reasoning metadata.
    */
   resolveModel(
     provider: string,
diff --git a/docs/core-data-structures/session.i18n.yaml b/docs/core-data-structures/session.i18n.yaml
index 17c4ab68ba..04ad28d9b5 100644
--- a/docs/core-data-structures/session.i18n.yaml
+++ b/docs/core-data-structures/session.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/session.md
-session.md: 5389c2e2114094df5afdca25afd904b2cbbf8270
-session.zh.md: 29c4853213dfc886155e3f8d0991fa161e05c71a
+session.md: e70add64198efd57538d1a014f24533d5197e531
+session.zh.md: d83cba6fbcb4ffcf137203d5e3e55045f1444a8b
diff --git a/docs/core-data-structures/session.md b/docs/core-data-structures/session.md
index 5389c2e211..e70add6419 100644
--- a/docs/core-data-structures/session.md
+++ b/docs/core-data-structures/session.md
@@ -144,7 +144,7 @@ interface TodoItem {
 
 ### The request header event: `request/header`
 
-The request envelope — the `EpochHeader` (call config + rendered system prompt + assembled tool schemas) — is logged session state, so every conversation request is a pure function of the log (the reconstructability Agent Note). A full `request/header` snapshot with reason `'initial'` or `'resume'` records each loop-instance boundary; a later changed request records another full snapshot with reason `'change'`. `foldRequestHeader(events)` reconstructs the header by selecting the latest snapshot. The event is not a `SurfaceEventType`: it produces no LLM message.
+The request envelope — the `EpochHeader` (call config + adapter-default provenance + rendered system prompt + assembled tool schemas) — is logged session state, so every conversation request is a pure function of the log (the reconstructability Agent Note). A full `request/header` snapshot with reason `'initial'` or `'resume'` records each loop-instance boundary; a later changed request records another full snapshot with reason `'change'`. `foldRequestHeader(events)` reconstructs the header by selecting the latest snapshot. The event is not a `SurfaceEventType`: it produces no LLM message.
 
 ```ts type-equiv
 /**
@@ -155,6 +155,8 @@ The request envelope — the `EpochHeader` (call config + rendered system prompt
 interface EpochHeader {
   /** The conversation's call configuration (provider, model, reasoning effort, and sampling scalars). */
   config: LlmCallConfig
+  /** Effective config fields materialized from the exact adapter rather than proposed by a caller. */
+  adapterDefaults?: LlmCallConfigAdapterDefaults
   /** Rendered system prompt text; absent for a system-less request. */
   system?: string
   /** Assembled tool schemas; absent for a tool-less request. */
diff --git a/docs/core-data-structures/session.zh.md b/docs/core-data-structures/session.zh.md
index 29c4853213..d83cba6fbc 100644
--- a/docs/core-data-structures/session.zh.md
+++ b/docs/core-data-structures/session.zh.md
@@ -146,7 +146,7 @@ interface TodoItem {
 
 ### 请求头事件：`request/header`
 
-请求信封（即 `EpochHeader`：调用配置 + 渲染后的系统提示词 + 已组装的工具 schema）会作为会话状态写入日志，因此每个对话请求都是日志的纯函数（见可重建性 Agent Note）。带有 reason `'initial'` 或 `'resume'` 的完整 `request/header` 快照记录每个 agent loop 实例的边界；之后请求发生变化时，系统会以 reason `'change'` 记录另一份完整快照。`foldRequestHeader(events)` 通过选择最新快照重建请求头。该事件不是 `SurfaceEventType`，不产生 LLM 消息。
+请求信封（即 `EpochHeader`：调用配置 + 适配器默认值来源 + 渲染后的系统提示词 + 已组装的工具 schema）会作为会话状态写入日志，因此每个对话请求都是日志的纯函数（见可重建性 Agent Note）。带有 reason `'initial'` 或 `'resume'` 的完整 `request/header` 快照记录每个 agent loop 实例的边界；之后请求发生变化时，系统会以 reason `'change'` 记录另一份完整快照。`foldRequestHeader(events)` 通过选择最新快照重建请求头。该事件不是 `SurfaceEventType`，不产生 LLM 消息。
 
 ```ts type-equiv
 /**
@@ -157,6 +157,8 @@ interface TodoItem {
 interface EpochHeader {
   /** The conversation's call configuration (provider, model, reasoning effort, and sampling scalars). */
   config: LlmCallConfig
+  /** Effective config fields materialized from the exact adapter rather than proposed by a caller. */
+  adapterDefaults?: LlmCallConfigAdapterDefaults
   /** Rendered system prompt text; absent for a system-less request. */
   system?: string
   /** Assembled tool schemas; absent for a tool-less request. */
diff --git a/docs/core-data-structures/settings.i18n.yaml b/docs/core-data-structures/settings.i18n.yaml
index 7a971156e7..50c20a0aab 100644
--- a/docs/core-data-structures/settings.i18n.yaml
+++ b/docs/core-data-structures/settings.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/settings.md
-settings.md: 381b36b3ff2f45a2090a2a2eac0f700bd00270c4
-settings.zh.md: bc6547db3b05c5a78f112462ae205d848f93da60
+settings.md: 1cabfae5d8dc72a9cd79341d250ee79820693872
+settings.zh.md: d63a1384646fa38199e7d65e9f0504f0440597be
diff --git a/docs/core-data-structures/settings.md b/docs/core-data-structures/settings.md
index 381b36b3ff..1cabfae5d8 100644
--- a/docs/core-data-structures/settings.md
+++ b/docs/core-data-structures/settings.md
@@ -73,7 +73,7 @@ interface SettingsScope<T> {
 
 ## Descriptors
 
-`describe()` serializes every registered namespace for configuration surfaces: the schemastery `toJSON()` envelope drives schema-rendered forms, and the resolved value fills them.
+`describe()` serializes every registered namespace for configuration surfaces: the schemastery `toJSON()` envelope drives schema-rendered forms, the resolved value fills them, and the detached `base`/`user` layers let a form mark user-overridden fields by presence. `describe({ redactSecrets: true })` — mandatory on every wire surface — strips `role('secret')` fields from all three layers and enumerates their `{path, set}` slots so a page can render write-only inputs without ever receiving a secret.
 
 ```ts type-equiv
 /** One registered namespace as surfaced to configuration UIs. */
@@ -84,8 +84,49 @@ interface SettingsDescriptor {
   schema: unknown
   /** Current resolved value. */
   value: unknown
+  /**
+   * Monotonic revision of the raw user section this descriptor was read at.
+   * Send it back as `expectedRevision` on a write to refuse a stale one.
+   */
+  revision: number
+  /** Registrant's composition `base` layer (detached), when one was declared. */
+  base?: unknown
+  /**
+   * Raw user section from the stored document (detached), when one exists and
+   * is well-formed; a field's presence here is what marks it user-overridden.
+   */
+  user?: unknown
   /** Owner's declared effect timing. */
   applies: SettingsApplies
+  /** Schema-declared secret positions; present only under `redactSecrets`. */
+  secrets?: RedactedSecret[]
+}
+```
+
+A caller that holds only the redacted descriptor cannot safely rebuild a section, so removals travel as path ops instead. Each descriptor also carries a `revision` over the raw section; a write may send it back as `expectedRevision`, and one that no longer matches is refused rather than applied over the writer that landed first.
+```ts type-equiv
+/**
+ * One path-addressed edit to a namespace's user section. Path mutation exists
+ * for a caller holding an INCOMPLETE view of the section — a configuration UI
+ * reads the redacted descriptor, which by construction never received the
+ * `role('secret')` fields. Such a caller can name the field it means without
+ * restating the section: a wholesale `replace` rebuilt from a redacted
+ * document silently deletes every secret the wire never returned.
+ */
+type SettingsPathOp =
+  | { op: 'set'; path: readonly string[]; value: unknown }
+  | { op: 'unset'; path: readonly string[] }
+```
+
+```ts type-equiv
+/** Options for {@link Settings.describe}. */
+interface SettingsDescribeOptions {
+  /**
+   * Strip `role('secret')` fields from `value`/`base`/`user` and enumerate
+   * them in each descriptor's `secrets`. Every wire surface MUST pass this;
+   * the verbatim default exists for same-process configuration UIs only.
+   */
+  redactSecrets?: boolean
 }
 ```
 
diff --git a/docs/core-data-structures/settings.zh.md b/docs/core-data-structures/settings.zh.md
index bc6547db3b..d63a138464 100644
--- a/docs/core-data-structures/settings.zh.md
+++ b/docs/core-data-structures/settings.zh.md
@@ -73,7 +73,7 @@ interface SettingsScope<T> {
 
 ## 描述符
 
-`describe()` 为配置界面序列化每个已注册 namespace：schemastery 的 `toJSON()` 信封驱动 schema 渲染的表单，解析值填充表单。
+`describe()` 为配置界面序列化每个已注册 namespace：schemastery 的 `toJSON()` 信封驱动 schema 渲染的表单，解析值填充表单，分离出的 `base`/`user` 层让表单按字段是否出现在 user 层标注「用户已覆盖」。`describe({ redactSecrets: true })`——每个 wire 面都必须传入——从三层剥离 `role('secret')` 字段并枚举其 `{path, set}` 槽位，页面因此能渲染只写输入框而永远收不到机密值。
 
 ```ts type-equiv
 /** One registered namespace as surfaced to configuration UIs. */
@@ -84,8 +84,49 @@ interface SettingsDescriptor {
   schema: unknown
   /** Current resolved value. */
   value: unknown
+  /**
+   * Monotonic revision of the raw user section this descriptor was read at.
+   * Send it back as `expectedRevision` on a write to refuse a stale one.
+   */
+  revision: number
+  /** Registrant's composition `base` layer (detached), when one was declared. */
+  base?: unknown
+  /**
+   * Raw user section from the stored document (detached), when one exists and
+   * is well-formed; a field's presence here is what marks it user-overridden.
+   */
+  user?: unknown
   /** Owner's declared effect timing. */
   applies: SettingsApplies
+  /** Schema-declared secret positions; present only under `redactSecrets`. */
+  secrets?: RedactedSecret[]
+}
+```
+
+只持有脱敏 descriptor 的调用方无法安全地重建分节，因此删除改以路径 op 传递。每个 descriptor 还携带针对原始分节的 `revision`；写入可以把它作为 `expectedRevision` 送回，不再匹配的写入会被拒绝，而不是覆盖在先落地的那个写方之上。
+```ts type-equiv
+/**
+ * One path-addressed edit to a namespace's user section. Path mutation exists
+ * for a caller holding an INCOMPLETE view of the section — a configuration UI
+ * reads the redacted descriptor, which by construction never received the
+ * `role('secret')` fields. Such a caller can name the field it means without
+ * restating the section: a wholesale `replace` rebuilt from a redacted
+ * document silently deletes every secret the wire never returned.
+ */
+type SettingsPathOp =
+  | { op: 'set'; path: readonly string[]; value: unknown }
+  | { op: 'unset'; path: readonly string[] }
+```
+
+```ts type-equiv
+/** Options for {@link Settings.describe}. */
+interface SettingsDescribeOptions {
+  /**
+   * Strip `role('secret')` fields from `value`/`base`/`user` and enumerate
+   * them in each descriptor's `secrets`. Every wire surface MUST pass this;
+   * the verbatim default exists for same-process configuration UIs only.
+   */
+  redactSecrets?: boolean
 }
 ```
 
diff --git a/docs/core-data-structures/tools.i18n.yaml b/docs/core-data-structures/tools.i18n.yaml
index fa49f46c59..a6cf2bae68 100644
--- a/docs/core-data-structures/tools.i18n.yaml
+++ b/docs/core-data-structures/tools.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/tools.md
-tools.md: dad7f7421caa94940801407fd4ef7fd936eb05c9
-tools.zh.md: 8386e5870e665e90ee0dbada8cb98084281001a7
+tools.md: 3c94f1093001e8c65365cc5baa50c1393d53b3ee
+tools.zh.md: 7a6aad81c4cfe83be8625411e4313d0c36018821
diff --git a/docs/core-data-structures/tools.md b/docs/core-data-structures/tools.md
index dad7f7421c..3c94f10930 100644
--- a/docs/core-data-structures/tools.md
+++ b/docs/core-data-structures/tools.md
@@ -447,7 +447,7 @@ type ObjectJsonSchema = JsonSchemaNode & { type: 'object' }
 How a tool wants its call shown in a UI (an editor tool-call card, a CLI log line), provider-neutral so a tool describes itself without depending on any client protocol. `presentCall`/`presentResult` return a **`card`-tagged render intent** — a discriminated union a UI bridge switches on:
 
 - `ToolCallView` (pending): `{ card: 'generic', title, kind?, rawInput?, content?, locations? }` (the default card; `locations` is `{ path, line? }[]` files the call reads/modifies, for editor follow-along), `{ card: 'terminal', title, description?, cwd? }` (a shell command → a terminal card), or `{ card: 'diff', title, diffs, locations? }` (a file create/modify → an inline diff card; `diffs` is `{ path, oldText, newText }[]`, `oldText: null` for a new file).
-- `ToolResultView` (completed): `{ card: 'generic', title?, content? }`, `{ card: 'terminal', title?, output?, exitCode?, signal? }` (the captured run output + exit; a capable UI shows an exit-status pill, while another may derive a fenced ` ```console ` fallback), or `{ card: 'diff', title?, diffs }` (a completed file mutation → the change to show, typically the applied hunks with context lines computed from the before/after content, or a whole-file diff when there is no before-image). Completed views replace pending views, so mutation tools return a diff result even when it duplicates the call-time snippet.
+- `ToolResultView` (completed): `{ card: 'generic', title?, content? }`, `{ card: 'terminal', title?, output?, exitCode?, signal? }` (the captured run output + exit; a capable UI shows an exit-status pill, while another may derive a fenced ` ```console ` fallback), `{ card: 'diff', title?, diffs }` (a completed file mutation → the change to show, typically the applied hunks with context lines computed from the before/after content, or a whole-file diff when there is no before-image), or `{ card: 'web', kind: 'search' | 'fetch', title?, … }` (a completed web retrieval; `kind: 'search'` carries the structured `sources`/`answer?`/`truncated`, `kind: 'fetch'` carries `url`/`statusCode`/`truncated`, and a UI without the `web` capability falls back to the raw result content — the body is not duplicated into the view). Completed views replace pending views, so mutation tools return a diff result even when it duplicates the call-time snippet.
 
 `ToolCallKind` (`'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other'`) picks an icon on a generic card. `FileLocation` (`{ path, line? }`) and `FileDiff` (`{ path, oldText, newText }`) are the shared file-card vocabulary. The design is pinned in [the render-intent-union Agent Note](../../.agents/notes/implemented/architecture/2026-07-02-tool-render-intent-union.md); the TUI and host/client runtime project this neutral vocabulary into their own views.
 
diff --git a/docs/core-data-structures/tools.zh.md b/docs/core-data-structures/tools.zh.md
index 8386e5870e..7a6aad81c4 100644
--- a/docs/core-data-structures/tools.zh.md
+++ b/docs/core-data-structures/tools.zh.md
@@ -447,7 +447,7 @@ type ObjectJsonSchema = JsonSchemaNode & { type: 'object' }
 工具希望其调用在 UI 中如何呈现（编辑器工具调用卡片、CLI（命令行界面）日志行），提供方无关，使工具在不依赖任何客户端协议的情况下描述自身。`presentCall`/`presentResult` 返回一个 **`card` 标签的渲染意图**——一个可辨识联合类型，UI 桥接层据此分发：
 
 - `ToolCallView`（待执行）：`{ card: 'generic', title, kind?, rawInput?, content?, locations? }`（默认卡片；`locations` 是 `{ path, line? }[]`，表示调用读取/修改的文件，供编辑器跟随）、`{ card: 'terminal', title, description?, cwd? }`（shell 命令→终端卡片）、或 `{ card: 'diff', title, diffs, locations? }`（文件创建/修改→行内 diff 卡片；`diffs` 是 `{ path, oldText, newText }[]`，新文件时 `oldText: null`）。
-- `ToolResultView`（已完成）：`{ card: 'generic', title?, content? }`、`{ card: 'terminal', title?, output?, exitCode?, signal? }`（捕获的运行输出 + 退出状态；有能力的 UI 显示退出状态标签，其他 UI 可以派生围栏 ` ```console ` 回退）、或 `{ card: 'diff', title?, diffs }`（已完成的文件变更→要展示的变更，通常是从变更前后内容计算出带上下文行的已应用 hunk，或在没有前像时的整文件 diff）。已完成视图会替换待执行视图，因此变更工具即使与调用时的片段重复也要返回 diff 结果。
+- `ToolResultView`（已完成）：`{ card: 'generic', title?, content? }`、`{ card: 'terminal', title?, output?, exitCode?, signal? }`（捕获的运行输出 + 退出状态；有能力的 UI 显示退出状态标签，其他 UI 可以派生围栏 ` ```console ` 回退）、`{ card: 'diff', title?, diffs }`（已完成的文件变更→要展示的变更，通常是从变更前后内容计算出带上下文行的已应用 hunk，或在没有前像时的整文件 diff）、或 `{ card: 'web', kind: 'search' | 'fetch', title?, … }`（已完成的 web 检索；`kind: 'search'` 携带结构化的 `sources`/`answer?`/`truncated`，`kind: 'fetch'` 携带 `url`/`statusCode`/`truncated`，不具备 `web` 能力的 UI 回退到原始结果内容——正文不会重复进视图）。已完成视图会替换待执行视图，因此变更工具即使与调用时的片段重复也要返回 diff 结果。
 
 `ToolCallKind`（`'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other'`）用于为通用卡片选择图标。`FileLocation`（`{ path, line? }`）与 `FileDiff`（`{ path, oldText, newText }`）是共享的文件卡片词汇。该设计由[渲染意图联合类型 Agent Note（agent 决策记录）](../../.agents/notes/implemented/architecture/2026-07-02-tool-render-intent-union.md)固定；TUI 和 host/client 运行时将这套中性词汇投影为各自的视图。
 
diff --git a/docs/event-producer-consumer.md b/docs/event-producer-consumer.md
index c82ffb5883..18668b8f2a 100644
--- a/docs/event-producer-consumer.md
+++ b/docs/event-producer-consumer.md
@@ -26,17 +26,20 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | `agent/turn-stopping` | `serial` | [`packages/core/agent/src/types.ts:406`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
 | `approval/request` | `waterfall` | [`packages/ui/user-approval/src/index.ts:30`](../packages/ui/user-approval/src/index.ts) | [`user-approval`](../packages/ui/user-approval) (`waterfall`) | [`acp`](../packages/acp/acp), `apiproxy` |
 | `commands/change` | `emit` | [`packages/ui/commands/src/index.ts:154`](../packages/ui/commands/src/index.ts) | [`commands`](../packages/ui/commands) (`events.dispatch`) | `apiproxy`, [`tui`](../packages/ui/tui) |
+| `credentials/updated` | `emit` | [`packages/credentials/credentials/src/index.ts:67`](../packages/credentials/credentials/src/index.ts) | [`credentials`](../packages/credentials/credentials) (`events.dispatch`) | `apiproxy`, [`credentials`](../packages/credentials/credentials) |
 | `domain/changed` | `emit` | [`packages/storage/storage-domain/src/events.ts:46`](../packages/storage/storage-domain/src/events.ts) | [`storage-domain`](../packages/storage/storage-domain) (`emit`) | `apiproxy`, [`storage-domain`](../packages/storage/storage-domain), [`workspace`](../packages/workspace/workspace) |
 | `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:62`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
 | `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:71`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-policy`](../packages/fs/fs-policy), [`skill-local`](../packages/skill/skill-local) |
 | `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:54`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
 | `goal/changed` | `emit` | [`packages/goal/goal/src/domain.ts:135`](../packages/goal/goal/src/domain.ts) | [`goal`](../packages/goal/goal) (`emit`) | [`goal-session`](../packages/goal/goal-session) |
-| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:58`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`agent-loop`](../packages/core/agent-loop), [`llm`](../packages/llm/llm), [`llm-replay`](../packages/support/llm-replay), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-title`](../packages/session-title/session-title) |
+| `llm/adapters-updated` | `emit` | [`packages/llm/llm/src/index.ts:70`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`events.dispatch`) | `apiproxy`, [`llm`](../packages/llm/llm) |
+| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:59`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`agent-loop`](../packages/core/agent-loop), [`llm`](../packages/llm/llm), [`llm-replay`](../packages/support/llm-replay), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-title`](../packages/session-title/session-title) |
 | `session/created` | `emit` | [`packages/core/session/src/index.ts:71`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | `apiproxy`, [`compact`](../packages/compact/compact), [`goal`](../packages/goal/goal), [`hook-protocol`](../packages/hooks/hook-protocol), [`jsonrpc`](../packages/ui/jsonrpc), [`llm-retry`](../packages/llm/llm-retry), [`plan-mode`](../packages/plan/plan-mode), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-telemetry`](../packages/telemetry/session-telemetry), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval) |
 | `session/disposed` | `emit` | [`packages/core/session/src/index.ts:81`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), `apiproxy`, [`session-persistence`](../packages/session-persistence/session-persistence), [`session-projection-cache`](../packages/session-projection/session-projection-cache), [`session-telemetry`](../packages/telemetry/session-telemetry), [`session-title`](../packages/session-title/session-title) |
 | `session/event` | `emit` | [`packages/core/session/src/index.ts:93`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`acp`](../packages/acp/acp), `apiproxy`, [`cli-demo`](../packages/examples/cli-demo), [`compact`](../packages/compact/compact), [`compact-basic`](../packages/compact/compact-basic), [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`hook-protocol`](../packages/hooks/hook-protocol), [`jsonrpc`](../packages/ui/jsonrpc), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-projection`](../packages/session-projection/session-projection), [`session-projection-cache`](../packages/session-projection/session-projection-cache), [`session-telemetry`](../packages/telemetry/session-telemetry), [`session-title`](../packages/session-title/session-title), [`token-meter`](../packages/llm/token-meter), [`tools`](../packages/core/tools), [`tui`](../packages/ui/tui), [`user-approval`](../packages/ui/user-approval), [`workspace-context`](../packages/context/workspace-context) |
 | `session/flush` | `parallel` | [`packages/core/session/src/index.ts:103`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`session-persistence`](../packages/session-persistence/session-persistence), [`session-telemetry`](../packages/telemetry/session-telemetry) |
-| `settings/updated` | `emit` | [`packages/settings/settings/src/index.ts:108`](../packages/settings/settings/src/index.ts) | [`settings`](../packages/settings/settings) (`events.dispatch`) | [`settings`](../packages/settings/settings) |
+| `settings/document-updated` | `emit` | [`packages/settings/settings/src/index.ts:150`](../packages/settings/settings/src/index.ts) | [`settings`](../packages/settings/settings) (`events.dispatch`) | `apiproxy` |
+| `settings/updated` | `emit` | [`packages/settings/settings/src/index.ts:137`](../packages/settings/settings/src/index.ts) | [`settings`](../packages/settings/settings) (`events.dispatch`) | [`settings`](../packages/settings/settings) |
 | `skills/change` | `emit` | [`packages/skill/skill/src/index.ts:188`](../packages/skill/skill/src/index.ts) | [`skill`](../packages/skill/skill) (`events.dispatch`) | [`tui`](../packages/ui/tui) |
 | `subagent/end` | `emit` | [`packages/subagent/subagent/src/index.ts:140`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`jsonrpc`](../packages/ui/jsonrpc), [`subagent`](../packages/subagent/subagent) |
 | `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:114`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
@@ -45,12 +48,12 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`system-prompt`](../packages/core/system-prompt) |
 | `system-prompt/change` | `emit` | [`packages/core/system-prompt/src/index.ts:35`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`emit`) | - |
 | `telemetry/record` | `waterfall` | [`packages/telemetry/session-telemetry/src/index.ts:41`](../packages/telemetry/session-telemetry/src/index.ts) | [`session-telemetry`](../packages/telemetry/session-telemetry) (`waterfall`) | - |
-| `tools/change` | `emit` | [`packages/core/tools/src/index.ts:156`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
-| `tools/code-dispatch-log` | `waterfall` | [`packages/core/tools/src/index.ts:138`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`spill-policy`](../packages/spill/spill-policy) |
-| `tools/execute` | `waterfall` | [`packages/core/tools/src/index.ts:113`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`timeout-policy`](../packages/timeout/timeout-policy) |
-| `tools/post-execute` | `waterfall` | [`packages/core/tools/src/index.ts:125`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`repeat-tool-guard`](../packages/guard/repeat-tool-guard), [`spill-policy`](../packages/spill/spill-policy), [`tool-fs-search`](../packages/fs/tool-fs-search), [`workspace-context`](../packages/context/workspace-context) |
-| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/index.ts:102`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`tool-tasks`](../packages/tasks/tool-tasks) |
-| `tools/result` | `emit` | [`packages/core/tools/src/index.ts:146`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`workspace-context`](../packages/context/workspace-context) |
+| `tools/change` | `emit` | [`packages/core/tools/src/index.ts:160`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
+| `tools/code-dispatch-log` | `waterfall` | [`packages/core/tools/src/index.ts:142`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`spill-policy`](../packages/spill/spill-policy) |
+| `tools/execute` | `waterfall` | [`packages/core/tools/src/index.ts:117`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`timeout-policy`](../packages/timeout/timeout-policy) |
+| `tools/post-execute` | `waterfall` | [`packages/core/tools/src/index.ts:129`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`repeat-tool-guard`](../packages/guard/repeat-tool-guard), [`spill-policy`](../packages/spill/spill-policy), [`tool-fs-search`](../packages/fs/tool-fs-search), [`workspace-context`](../packages/context/workspace-context) |
+| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/index.ts:106`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`tool-tasks`](../packages/tasks/tool-tasks) |
+| `tools/result` | `emit` | [`packages/core/tools/src/index.ts:150`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`workspace-context`](../packages/context/workspace-context) |
 | `workflow/agent-end` | `emit` | [`packages/workflow/workflow/src/index.ts:81`](../packages/workflow/workflow/src/index.ts) | [`workflow`](../packages/workflow/workflow) (`events.dispatch`) | [`workflow`](../packages/workflow/workflow) |
 | `workflow/agent-start` | `emit` | [`packages/workflow/workflow/src/index.ts:70`](../packages/workflow/workflow/src/index.ts) | [`workflow`](../packages/workflow/workflow) (`events.dispatch`) | [`workflow`](../packages/workflow/workflow) |
 | `workflow/end` | `emit` | [`packages/workflow/workflow/src/index.ts:91`](../packages/workflow/workflow/src/index.ts) | [`workflow`](../packages/workflow/workflow) (`events.dispatch`) | [`workflow`](../packages/workflow/workflow) |
@@ -63,11 +66,14 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | Event string | Dispatchers | Listeners |
 | --- | --- | --- |
 | `commands/changed` | `runtime` (`emit`) | `ui-command` |
-| `connection/reset` | `runtime` (`emit`) | `ui-command` |
+| `connection/reset` | `runtime` (`emit`) | `ui-command`, `ui-models` |
+| `credentials/changed` | `runtime` (`emit`) | `ui-models` |
 | `internal/dispatch` | - | [`commands`](../packages/ui/commands), [`compact`](../packages/compact/compact), [`fs`](../packages/fs/fs), [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`hook-protocol`](../packages/hooks/hook-protocol), [`llm-retry`](../packages/llm/llm-retry), [`permission`](../packages/ui/permission), [`plan-mode`](../packages/plan/plan-mode), [`pty-local`](../packages/pty/pty-local), `runtime`, [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`session-title`](../packages/session-title/session-title), [`subagent`](../packages/subagent/subagent), [`time-context`](../packages/context/time-context), [`tool-todo`](../packages/todo/tool-todo), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval), [`workflow`](../packages/workflow/workflow) |
 | `internal/plugin` | - | `hmr`, `loader`, `modules`, `webserver` |
 | `internal/status` | - | [`agent`](../packages/core/agent) |
 | `locale/change` | `locale` (`emit`) | `locale`, `ui-models`, `ui-settings-general` |
+| `models/changed` | `runtime` (`emit`) | `ui-models` |
+| `settings/changed` | `runtime` (`emit`) | `ui-models` |
 | `slash/input-begin-command` | - | `ui-conversation` |
 | `slash/input-consume-token` | - | `ui-conversation` |
 | `slash/input-insert-reference` | - | `ui-conversation` |
diff --git a/docs/i18n/terminology.md b/docs/i18n/terminology.md
index 5072c2684d..0a048ef71a 100644
--- a/docs/i18n/terminology.md
+++ b/docs/i18n/terminology.md
@@ -96,6 +96,7 @@
 | Cookbook | 实操手册 | | | 文档标题用语 |
 | context | 上下文 | | | |
 | counterpart | 对侧文件 | | 对应物、配对物 | 双语配对语境；泛指"另一侧"时可写「另一侧」 |
+| configurable-provider directory | 可配置提供方目录 | | | llm seam 中 `registerConfigurableProviders()` 维护的目录；沿用 Service Catalog →「服务目录」先例 |
 | context compaction | 上下文压缩 | 上下文压缩（context compaction） | | |
 | contract | 契约 | | | 如：`pairing contract` →`配对契约` |
 | Cordis config entry | Cordis 配置项 | | | 指 `cordis.yml` 插件列表中的一项；插件实现本身写`Cordis 插件` |
@@ -103,6 +104,7 @@
 | coverage | 覆盖率 | | | |
 | crash recovery | 崩溃恢复 | | | |
 | deploy root | 部署根目录 | | | |
+| dormant | 休眠 | | 睡眠、蛰伏 | 指已声明可配置但当前未注册路由的提供方 |
 | durability | 持久性 | | | |
 | feature requirement | 功能依赖 | | | 功能或功能选项通过 `requires` 声明的关系 |
 | ergonomics | 易用性 / 开发体验 | | 人体工学 | API 或面向模型的接口用「易用性」；工具链或开发者工作流用「开发体验」 |
@@ -119,6 +121,7 @@
 | fenced code block | 围栏代码块 | | | 沿用 MDN 中文翻译 |
 | fingerprint | 指纹 | | | 通用内容指纹；双语配对机制使用 sidecar record 记录两侧 blob hash |
 | finish reason | 结束原因 | | | |
+| fold | 折叠区 | | | 配置界面语境：默认收起的字段分区（collapsed →「收起」）|
 | foreground run | 前台运行 | | | |
 | freshness | 新鲜度 | | | 沿用 MDN 中文翻译；在本项目中指译文相对源文的同步状态 |
 | hook | 钩子 | | | |
@@ -166,6 +169,7 @@
 | serving surface | 对外服务接口 | | | |
 | session | 会话 | | | |
 | session event | 会话事件 | | | |
+| setup card | 设置卡片 | | | 首次运行时代替行卡直接展开的配置卡 |
 | sidecar record | 伴随记录 | | 旁挂记录 | 指与文档同目录的伴随记录文件 |
 | smoke test | 冒烟测试 | | | |
 | snapshot | 快照 | | | |
diff --git a/docs/module-graph.md b/docs/module-graph.md
index ea5e1f4334..8e8b3130ab 100644
--- a/docs/module-graph.md
+++ b/docs/module-graph.md
@@ -8,6 +8,7 @@ Inter-package dependencies among the `@deepseek-ai/dsh-*` harness packages, deri
 ```mermaid
 flowchart TD
   subgraph group_util["packages/util"]
+    pkg_atomic_write["atomic-write"]
     pkg_brand["brand"]
     pkg_native_command["native-command"]
     pkg_paths["paths"]
@@ -143,6 +144,7 @@ flowchart TD
     pkg_client_locale["client-locale"]
     pkg_client_modules["client-modules"]
     pkg_client_runtime["client-runtime"]
+    pkg_client_schema_form["client-schema-form"]
     pkg_client_test_runtime["client-test-runtime"]
     pkg_client_ui_command["client-ui-command"]
     pkg_client_ui_conversation["client-ui-conversation"]
@@ -177,6 +179,10 @@ flowchart TD
     pkg_tmux_context["tmux-context"]
     pkg_workspace_context["workspace-context"]
   end
+  subgraph group_credentials["packages/credentials"]
+    pkg_credentials["credentials"]
+    pkg_credentials_local["credentials-local"]
+  end
   subgraph group_examples["packages/examples"]
     pkg_acp_demo["acp-demo"]
     pkg_agent_spine_demo["agent-spine-demo"]
@@ -261,6 +267,7 @@ flowchart TD
   subgraph group_workspace["packages/workspace"]
     pkg_workspace["workspace"]
   end
+  pkg_atomic_write --> pkg_invariants
   pkg_brand --> pkg_invariants
   pkg_native_command --> pkg_invariants
   pkg_paths --> pkg_invariants
@@ -273,6 +280,7 @@ flowchart TD
   pkg_loader_smoke --> pkg_invariants
   pkg_client_modules --> pkg_invariants
   pkg_client_runtime --> pkg_invariants
+  pkg_client_schema_form --> pkg_invariants
   pkg_client_ui_primitives --> pkg_invariants
   pkg_client_ui_slots --> pkg_invariants
   pkg_client_web --> pkg_invariants
@@ -302,9 +310,6 @@ flowchart TD
   pkg_client_test_runtime --> pkg_client_ui_slots
   pkg_client_test_runtime --> pkg_client_web_react
   pkg_client_test_runtime --> pkg_invariants
-  pkg_client_ui_models --> pkg_client_runtime
-  pkg_client_ui_models --> pkg_client_ui_slots
-  pkg_client_ui_models --> pkg_invariants
   pkg_client_ui_settings --> pkg_client_runtime
   pkg_client_ui_settings --> pkg_client_ui_primitives
   pkg_client_ui_settings --> pkg_client_ui_slots
@@ -315,6 +320,8 @@ flowchart TD
   pkg_client_ui_workspace --> pkg_client_ui_primitives
   pkg_client_ui_workspace --> pkg_client_ui_slots
   pkg_client_ui_workspace --> pkg_invariants
+  pkg_credentials --> pkg_brand
+  pkg_credentials --> pkg_invariants
   pkg_helper --> pkg_brand
   pkg_helper --> pkg_invariants
   pkg_helper --> pkg_subprocess
@@ -333,11 +340,15 @@ flowchart TD
   pkg_subprocess_local --> pkg_subprocess
   pkg_typert_loader --> pkg_invariants
   pkg_typert_loader --> pkg_typert_registry
+  pkg_llm_deepseek --> pkg_credentials
   pkg_llm_deepseek --> pkg_invariants
   pkg_llm_deepseek --> pkg_llm
+  pkg_llm_deepseek --> pkg_settings
   pkg_llm_deepseek --> pkg_timeout
+  pkg_llm_pi_ai --> pkg_credentials
   pkg_llm_pi_ai --> pkg_invariants
   pkg_llm_pi_ai --> pkg_llm
+  pkg_llm_pi_ai --> pkg_settings
   pkg_llm_pi_ai --> pkg_timeout
   pkg_session --> pkg_brand
   pkg_session --> pkg_invariants
@@ -348,6 +359,13 @@ flowchart TD
   pkg_system_prompt --> pkg_scope
   pkg_web --> pkg_invariants
   pkg_web --> pkg_llm
+  pkg_client_ui_models --> pkg_client_connection
+  pkg_client_ui_models --> pkg_client_runtime
+  pkg_client_ui_models --> pkg_client_schema_form
+  pkg_client_ui_models --> pkg_client_ui_primitives
+  pkg_client_ui_models --> pkg_client_ui_slots
+  pkg_client_ui_models --> pkg_client_web_react
+  pkg_client_ui_models --> pkg_invariants
   pkg_client_ui_question --> pkg_client_locale
   pkg_client_ui_question --> pkg_invariants
   pkg_client_ui_settings_general --> pkg_client_locale
@@ -371,6 +389,10 @@ flowchart TD
   pkg_client_ui_theme --> pkg_client_ui_primitives
   pkg_client_ui_theme --> pkg_client_ui_slots
   pkg_client_ui_theme --> pkg_invariants
+  pkg_credentials_local --> pkg_atomic_write
+  pkg_credentials_local --> pkg_credentials
+  pkg_credentials_local --> pkg_invariants
+  pkg_credentials_local --> pkg_paths
   pkg_host_directory_picker_browse --> pkg_client_locale
   pkg_host_directory_picker_browse --> pkg_client_runtime
   pkg_host_directory_picker_browse --> pkg_client_ui_primitives
@@ -386,6 +408,7 @@ flowchart TD
   pkg_lsp --> pkg_llm
   pkg_sandbox --> pkg_invariants
   pkg_sandbox --> pkg_llm
+  pkg_settings_local --> pkg_atomic_write
   pkg_settings_local --> pkg_invariants
   pkg_settings_local --> pkg_paths
   pkg_settings_local --> pkg_settings
@@ -999,6 +1022,7 @@ flowchart TD
 | Package | Group | Depends on |
 | --- | --- | --- |
 | [`invariants`](../packages/support/invariants) | `support` | — |
+| [`atomic-write`](../packages/util/atomic-write) | `util` | [`invariants`](../packages/support/invariants) |
 | [`brand`](../packages/util/brand) | `util` | [`invariants`](../packages/support/invariants) |
 | [`native-command`](../packages/util/native-command) | `util` | [`invariants`](../packages/support/invariants) |
 | [`paths`](../packages/util/paths) | `util` | [`invariants`](../packages/support/invariants) |
@@ -1011,6 +1035,7 @@ flowchart TD
 | [`loader-smoke`](../packages/support/loader-smoke) | `support` | [`invariants`](../packages/support/invariants) |
 | [`client-modules`](../packages/client/modules) | `client` | [`invariants`](../packages/support/invariants) |
 | [`client-runtime`](../packages/client/runtime) | `client` | [`invariants`](../packages/support/invariants) |
+| [`client-schema-form`](../packages/client/schema-form) | `client` | [`invariants`](../packages/support/invariants) |
 | [`client-ui-primitives`](../packages/client/ui-primitives) | `client` | [`invariants`](../packages/support/invariants) |
 | [`client-ui-slots`](../packages/client/ui-slots) | `client` | [`invariants`](../packages/support/invariants) |
 | [`client-web`](../packages/client/web) | `client` | [`invariants`](../packages/support/invariants) |
@@ -1029,10 +1054,10 @@ flowchart TD
 | [`client-hmr`](../packages/client/hmr) | `client` | [`client-modules`](../packages/client/modules), [`host-webserver`](../packages/host/webserver), [`invariants`](../packages/support/invariants) |
 | [`client-locale`](../packages/client/locale) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-test-runtime`](../packages/client/test-runtime) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`invariants`](../packages/support/invariants) |
-| [`client-ui-models`](../packages/client/ui-models) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-settings`](../packages/client/ui-settings) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-trajectory`](../packages/client/ui-trajectory) | `client` | [`client-ui-primitives`](../packages/client/ui-primitives), [`invariants`](../packages/support/invariants) |
 | [`client-ui-workspace`](../packages/client/ui-workspace) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
+| [`credentials`](../packages/credentials/credentials) | `credentials` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants) |
 | [`helper`](../packages/sdk/helper) | `sdk` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`subprocess`](../packages/subprocess/subprocess) |
 | [`telemetry`](../packages/sdk/telemetry) | `sdk` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths) |
 | [`settings`](../packages/settings/settings) | `settings` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants) |
@@ -1041,21 +1066,23 @@ flowchart TD
 | [`storage-sqlite`](../packages/storage/storage-sqlite) | `storage` | [`invariants`](../packages/support/invariants), [`storage`](../packages/storage/storage) |
 | [`subprocess-local`](../packages/subprocess/subprocess-local) | `subprocess` | [`invariants`](../packages/support/invariants), [`subprocess`](../packages/subprocess/subprocess) |
 | [`typert-loader`](../packages/typert/loader) | `typert` | [`invariants`](../packages/support/invariants), [`typert-registry`](../packages/typert/registry) |
-| [`llm-deepseek`](../packages/llm/llm-deepseek) | `llm` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`timeout`](../packages/util/timeout) |
-| [`llm-pi-ai`](../packages/llm/llm-pi-ai) | `llm` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`timeout`](../packages/util/timeout) |
+| [`llm-deepseek`](../packages/llm/llm-deepseek) | `llm` | [`credentials`](../packages/credentials/credentials), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`settings`](../packages/settings/settings), [`timeout`](../packages/util/timeout) |
+| [`llm-pi-ai`](../packages/llm/llm-pi-ai) | `llm` | [`credentials`](../packages/credentials/credentials), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`settings`](../packages/settings/settings), [`timeout`](../packages/util/timeout) |
 | [`session`](../packages/core/session) | `core` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope) |
 | [`system-prompt`](../packages/core/system-prompt) | `core` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope) |
 | [`web`](../packages/web/web) | `web` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
+| [`client-ui-models`](../packages/client/ui-models) | `client` | [`client-connection`](../packages/client/connection), [`client-runtime`](../packages/client/runtime), [`client-schema-form`](../packages/client/schema-form), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`invariants`](../packages/support/invariants) |
 | [`client-ui-question`](../packages/client/ui-question) | `client` | [`client-locale`](../packages/client/locale), [`invariants`](../packages/support/invariants) |
 | [`client-ui-settings-general`](../packages/client/ui-settings-general) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-settings`](../packages/client/ui-settings), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-sidebar`](../packages/client/ui-sidebar) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-slash`](../packages/client/ui-slash) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-theme`](../packages/client/ui-theme) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
+| [`credentials-local`](../packages/credentials/credentials-local) | `credentials` | [`atomic-write`](../packages/util/atomic-write), [`credentials`](../packages/credentials/credentials), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths) |
 | [`host-directory-picker-browse`](../packages/host/directory-picker-browse) | `host` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
 | [`host-directory-picker-native`](../packages/host/directory-picker-native) | `host` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
 | [`lsp`](../packages/lsp/lsp) | `lsp` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
-| [`settings-local`](../packages/settings/settings-local) | `settings` | [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`settings`](../packages/settings/settings) |
+| [`settings-local`](../packages/settings/settings-local) | `settings` | [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`settings`](../packages/settings/settings) |
 | [`token-meter`](../packages/llm/token-meter) | `llm` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`agent`](../packages/core/agent) | `core` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`bash`](../packages/bash/bash) | `bash` | [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`subprocess`](../packages/subprocess/subprocess) |
diff --git a/docs/persistence-catalog.md b/docs/persistence-catalog.md
index 524ba6ffd7..4d4faa42e3 100644
--- a/docs/persistence-catalog.md
+++ b/docs/persistence-catalog.md
@@ -78,7 +78,7 @@ export type SessionEvent<T extends SessionEventType = SessionEventType> = {
 }[T]
 ```
 
-Sources: [`packages/core/session/src/types.ts:279`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:286`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:315`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:347`](../packages/core/session/src/types.ts)
+Sources: [`packages/core/session/src/types.ts:282`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:289`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:318`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:350`](../packages/core/session/src/types.ts)
 
 ## Events
 
@@ -154,7 +154,7 @@ Source: [`packages/ui/user-approval/src/index.ts:67`](../packages/ui/user-approv
 
 Types: [StreamChunk](core-data-structures/llm-streaming.md)
 
-Source: [`packages/core/session/src/types.ts:212`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:215`](../packages/core/session/src/types.ts)
 
 #### `assistant/message` — surface
 
@@ -170,7 +170,7 @@ Source: [`packages/core/session/src/types.ts:212`](../packages/core/session/src/
 
 Types: [TokenUsage](core-data-structures/llm-streaming.md)
 
-Source: [`packages/core/session/src/types.ts:219`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:222`](../packages/core/session/src/types.ts)
 
 ### `command/*`
 
@@ -379,7 +379,7 @@ Source: [`packages/plan/plan-mode/src/index.ts:51`](../packages/plan/plan-mode/s
 'request/header': { header: EpochHeader; reason: RequestHeaderReason }
 ```
 
-Source: [`packages/core/session/src/types.ts:252`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:255`](../packages/core/session/src/types.ts)
 
 ### `sandbox/*`
 
@@ -432,7 +432,7 @@ Source: [`packages/sandbox/sandbox-policy/src/session-mode.ts:33`](../packages/s
 'session/end-seed': Record<string, never>
 ```
 
-Source: [`packages/core/session/src/types.ts:275`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:278`](../packages/core/session/src/types.ts)
 
 #### `session/title` — log-only
 
@@ -468,7 +468,7 @@ Source: [`packages/session-title/session-title-llm/src/index.ts:43`](../packages
 'steering/message': { turn: number; message: UserMessage }
 ```
 
-Source: [`packages/core/session/src/types.ts:245`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:248`](../packages/core/session/src/types.ts)
 
 ### `step/*`
 
@@ -479,7 +479,7 @@ Source: [`packages/core/session/src/types.ts:245`](../packages/core/session/src/
 'step/end': { turn: number; step: number }
 ```
 
-Source: [`packages/core/session/src/types.ts:201`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:204`](../packages/core/session/src/types.ts)
 
 #### `step/start` — log-only
 
@@ -488,7 +488,7 @@ Source: [`packages/core/session/src/types.ts:201`](../packages/core/session/src/
 'step/start': { turn: number; step: number }
 ```
 
-Source: [`packages/core/session/src/types.ts:199`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/types.ts)
 
 ### `todo/*`
 
@@ -501,7 +501,7 @@ Source: [`packages/core/session/src/types.ts:199`](../packages/core/session/src/
 
 Types: [TodoItem](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:247`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:250`](../packages/core/session/src/types.ts)
 
 ### `tool/*`
 
@@ -518,7 +518,7 @@ Source: [`packages/core/session/src/types.ts:247`](../packages/core/session/src/
 
 Types: [CallId](core-data-structures/core.md)
 
-Source: [`packages/core/session/src/types.ts:225`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:228`](../packages/core/session/src/types.ts)
 
 #### `tool/code-dispatch` — log-only
 
@@ -591,7 +591,7 @@ Source: [`packages/core/tools/src/code-mode.ts:33`](../packages/core/tools/src/c
 }
 ```
 
-Source: [`packages/core/session/src/types.ts:237`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:240`](../packages/core/session/src/types.ts)
 
 ### `turn/*`
 
@@ -609,7 +609,7 @@ Source: [`packages/core/session/src/types.ts:237`](../packages/core/session/src/
 
 Types: [TurnEndReason](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:197`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:200`](../packages/core/session/src/types.ts)
 
 #### `turn/start` — log-only
 
@@ -622,7 +622,7 @@ Source: [`packages/core/session/src/types.ts:197`](../packages/core/session/src/
 
 Types: [TurnTrigger](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:190`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:193`](../packages/core/session/src/types.ts)
 
 ### `user/*`
 
@@ -640,4 +640,4 @@ Source: [`packages/core/session/src/types.ts:190`](../packages/core/session/src/
 'user/message': UserMessage
 ```
 
-Source: [`packages/core/session/src/types.ts:210`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:213`](../packages/core/session/src/types.ts)
diff --git a/docs/user/guide/config.i18n.yaml b/docs/user/guide/config.i18n.yaml
index 85ccd636e0..4fd91343ac 100644
--- a/docs/user/guide/config.i18n.yaml
+++ b/docs/user/guide/config.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/user/guide/config.md
-config.md: 00d103be990f3e5af315ab7667771b01be96ba5d
-config.zh.md: a296619c3f3d68726efc4fc13703a510719fc008
+config.md: 0e2e0e7e7077adcacfaada1d038a0b1e63fcc0cd
+config.zh.md: 850a841286fe77db9169738b0b155f008205a1a8
diff --git a/docs/user/guide/config.md b/docs/user/guide/config.md
index 00d103be99..0e2e0e7e70 100644
--- a/docs/user/guide/config.md
+++ b/docs/user/guide/config.md
@@ -30,7 +30,7 @@ A minimal configuration is a list of plugin entries:
   config:
     agents:
       - id: main
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-flash
 ```
 
diff --git a/docs/user/guide/config.zh.md b/docs/user/guide/config.zh.md
index a296619c3f..850a841286 100644
--- a/docs/user/guide/config.zh.md
+++ b/docs/user/guide/config.zh.md
@@ -30,7 +30,7 @@ Harness 使用 `cordis.yml` 描述 Agent 加载哪些插件以及每个插件的
   config:
     agents:
       - id: main
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-flash
 ```
 
diff --git a/docs/user/guide/index.i18n.yaml b/docs/user/guide/index.i18n.yaml
index 17056741b7..af6b6012d2 100644
--- a/docs/user/guide/index.i18n.yaml
+++ b/docs/user/guide/index.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/user/guide/index.md
-index.md: 72d822f6377089f56abda4383f393eed30a6709a
-index.zh.md: 442cda48072c3f6bf9579e880c0ab381b799966f
+index.md: cefb978019c21a24e9fb57f96ab8e0fee82dc812
+index.zh.md: 2f1298b5bf5ce44f7d653154b263cb533a3b3ba4
diff --git a/docs/user/guide/index.md b/docs/user/guide/index.md
index 72d822f637..cefb978019 100644
--- a/docs/user/guide/index.md
+++ b/docs/user/guide/index.md
@@ -20,7 +20,7 @@ Harness implements every capability an AI agent needs—including LLM calls, too
   config:
     agents:
       - id: main
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-flash
 
 # Select the interactive front door
diff --git a/docs/user/guide/index.zh.md b/docs/user/guide/index.zh.md
index 442cda4807..2f1298b5bf 100644
--- a/docs/user/guide/index.zh.md
+++ b/docs/user/guide/index.zh.md
@@ -20,7 +20,7 @@ Harness 将一个 AI Agent（智能体） 所需要的所有能力——LLM 调
   config:
     agents:
       - id: main
-        provider: deepseek
+        provider: deepseek-official
         model: deepseek-v4-flash
 
 # Select the interactive front door
diff --git a/examples/acp-agent/advanced.cordis.snapshot.yml b/examples/acp-agent/advanced.cordis.snapshot.yml
index fb1050a259..c89fdaf2a6 100644
--- a/examples/acp-agent/advanced.cordis.snapshot.yml
+++ b/examples/acp-agent/advanced.cordis.snapshot.yml
@@ -10,7 +10,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: 'none'
@@ -31,7 +31,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/advanced.cordis.yml b/examples/acp-agent/advanced.cordis.yml
index 5aeacd3e22..aa20e1558d 100644
--- a/examples/acp-agent/advanced.cordis.yml
+++ b/examples/acp-agent/advanced.cordis.yml
@@ -8,7 +8,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/both-mode.cordis.snapshot.yml b/examples/acp-agent/both-mode.cordis.snapshot.yml
index de424bad0d..84a286649a 100644
--- a/examples/acp-agent/both-mode.cordis.snapshot.yml
+++ b/examples/acp-agent/both-mode.cordis.snapshot.yml
@@ -12,7 +12,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: 'none'
@@ -31,7 +31,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/both-mode.cordis.yml b/examples/acp-agent/both-mode.cordis.yml
index cff9602684..d793e616f9 100644
--- a/examples/acp-agent/both-mode.cordis.yml
+++ b/examples/acp-agent/both-mode.cordis.yml
@@ -10,7 +10,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/code-mode-workspace-context.cordis.snapshot.yml b/examples/acp-agent/code-mode-workspace-context.cordis.snapshot.yml
index 0681881f96..684ac2b27d 100644
--- a/examples/acp-agent/code-mode-workspace-context.cordis.snapshot.yml
+++ b/examples/acp-agent/code-mode-workspace-context.cordis.snapshot.yml
@@ -11,7 +11,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: 'none'
diff --git a/examples/acp-agent/code-mode-workspace-context.cordis.yml b/examples/acp-agent/code-mode-workspace-context.cordis.yml
index b043869a65..a724a86961 100644
--- a/examples/acp-agent/code-mode-workspace-context.cordis.yml
+++ b/examples/acp-agent/code-mode-workspace-context.cordis.yml
@@ -8,7 +8,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/code-mode.cordis.snapshot.yml b/examples/acp-agent/code-mode.cordis.snapshot.yml
index 2730ee8a87..992a442343 100644
--- a/examples/acp-agent/code-mode.cordis.snapshot.yml
+++ b/examples/acp-agent/code-mode.cordis.snapshot.yml
@@ -12,7 +12,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: 'none'
@@ -31,7 +31,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/code-mode.cordis.yml b/examples/acp-agent/code-mode.cordis.yml
index a6070d1262..ec31a1fc87 100644
--- a/examples/acp-agent/code-mode.cordis.yml
+++ b/examples/acp-agent/code-mode.cordis.yml
@@ -11,7 +11,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/cordis.snapshot.yml b/examples/acp-agent/cordis.snapshot.yml
index 2838127d52..0c83d783d0 100644
--- a/examples/acp-agent/cordis.snapshot.yml
+++ b/examples/acp-agent/cordis.snapshot.yml
@@ -22,7 +22,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           # Replay fixtures are raw JSONL; the whole-config patch must restate
@@ -50,7 +50,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/cordis.yml b/examples/acp-agent/cordis.yml
index f784972429..6f9f000182 100644
--- a/examples/acp-agent/cordis.yml
+++ b/examples/acp-agent/cordis.yml
@@ -5,7 +5,7 @@
 # carries ACP JSON-RPC.
 
 # The DeepSeek adapter. Shipped default: full thinking at max effort on every
-# request (wire-only defaults; they never enter the request header).
+# request; exact-model resolution materializes request defaults before logging.
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config:
@@ -13,7 +13,6 @@
     baseURL: !!js process.env.DEEPSEEK_BASE_URL
     thinking: enabled
     reasoningEffort: max
-    defaultContextWindow: 256000
     models:
       - id: deepseek-v4-flash
       - id: deepseek-v4-pro
@@ -54,7 +53,7 @@
 - id: acp-agent
   name: '@deepseek-ai/dsh-acp-demo'
   config:
-    provider: deepseek
+    provider: deepseek-official
     model: deepseek-v4-pro
     persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
     persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/depth-two.cordis.snapshot.yml b/examples/acp-agent/depth-two.cordis.snapshot.yml
index d92a3cd304..4e849d7835 100644
--- a/examples/acp-agent/depth-two.cordis.snapshot.yml
+++ b/examples/acp-agent/depth-two.cordis.snapshot.yml
@@ -30,7 +30,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: none
@@ -45,7 +45,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/fs.cordis.snapshot.yml b/examples/acp-agent/fs.cordis.snapshot.yml
index 0417074edd..0cab77bb36 100644
--- a/examples/acp-agent/fs.cordis.snapshot.yml
+++ b/examples/acp-agent/fs.cordis.snapshot.yml
@@ -15,7 +15,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: none
@@ -38,7 +38,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/pty.cordis.snapshot.yml b/examples/acp-agent/pty.cordis.snapshot.yml
index 07e4605375..c918f74c56 100644
--- a/examples/acp-agent/pty.cordis.snapshot.yml
+++ b/examples/acp-agent/pty.cordis.snapshot.yml
@@ -20,7 +20,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/retry.cordis.snapshot.yml b/examples/acp-agent/retry.cordis.snapshot.yml
index 883858cea1..72370f1a70 100644
--- a/examples/acp-agent/retry.cordis.snapshot.yml
+++ b/examples/acp-agent/retry.cordis.snapshot.yml
@@ -13,7 +13,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: none
@@ -28,7 +28,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   retryPolicy:
                     mode: normal
diff --git a/examples/acp-agent/retry.cordis.yml b/examples/acp-agent/retry.cordis.yml
index 57e364a694..589120c080 100644
--- a/examples/acp-agent/retry.cordis.yml
+++ b/examples/acp-agent/retry.cordis.yml
@@ -17,7 +17,6 @@
           baseURL: !!js process.env.DEEPSEEK_BASE_URL
           thinking: enabled
           reasoningEffort: max
-          defaultContextWindow: 256000
           retryPolicy:
             mode: normal
             maxRetries: 2
@@ -31,7 +30,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml b/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
index f1261dc294..d829673844 100644
--- a/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
+++ b/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
@@ -13,7 +13,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: none
@@ -43,7 +43,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/session-title.cordis.snapshot.yml b/examples/acp-agent/session-title.cordis.snapshot.yml
index 2226fdf8a7..b10e82cfcc 100644
--- a/examples/acp-agent/session-title.cordis.snapshot.yml
+++ b/examples/acp-agent/session-title.cordis.snapshot.yml
@@ -12,7 +12,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: none
@@ -28,7 +28,7 @@
             config:
               overrideFile: ./.missing-main-replay-override.json
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/session-title.cordis.yml b/examples/acp-agent/session-title.cordis.yml
index 09c9e2b919..0819b79d98 100644
--- a/examples/acp-agent/session-title.cordis.yml
+++ b/examples/acp-agent/session-title.cordis.yml
@@ -15,5 +15,5 @@
               maxInputBytes: 4096
               maxOutputTokens: 32
               timeoutMs: 5000
-              provider: deepseek
+              provider: deepseek-official
               model: deepseek-v4-flash
diff --git a/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl b/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
index 26eb4a7229..cf51aed295 100644
--- a/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
+++ b/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Create a durable two-round goal for the ACP snapshot, inspect it, then report readiness."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Create a durable two-round goal","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_create","name":"create_goal","argumentsDelta":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}
 {"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_goal_create"},"content":[{"type":"tool-result","toolCallId":"call_goal_create","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":2},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"user/message","seq":13,"time":0,"data":{"content":[{"type":"text","text":"<goal_state>{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"maxGoalRounds\":2},\"roundsStarted\":0,\"createdAt\":0,\"updatedAt\":0}</goal_state>"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":0,"change":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-{{sessionId}}","revision":1,"objective":"Finish the ACP goal-session snapshot proof","phase":"active","maxGoalRounds":2},"roundsStarted":0,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
@@ -20,7 +20,7 @@
 {"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}}}}
 {"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}
 {"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
+{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
 {"type":"tool/call","seq":22,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_get","name":"get_goal","arguments":"{}"}}
 {"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_goal_get"},"content":[{"type":"tool-result","toolCallId":"call_goal_get","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":2},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[22],"surfaceOp":"append"}
 {"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}
@@ -30,7 +30,7 @@
 {"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}
 {"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}
+{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}
 {"type":"step/end","seq":32,"time":0,"data":{"turn":1,"step":3}}
 {"type":"turn/end","seq":33,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"turn/start","seq":34,"time":0,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":1}}}}
@@ -41,7 +41,7 @@
 {"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL ROUND ONE"}}}}
 {"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":40,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":41,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":42,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL ROUND ONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":40,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
+{"type":"assistant/message","seq":42,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL ROUND ONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":40,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
 {"type":"step/end","seq":43,"time":0,"data":{"turn":2,"step":1}}
 {"type":"turn/end","seq":44,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
 {"type":"turn/start","seq":45,"time":0,"data":{"turn":3,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":2}}}}
diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
index 7ca8f10e3e..7af9e3649a 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
@@ -3,12 +3,12 @@
 {"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"64837546-93f0-46bd-83ec-2649c2497663"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884563,"data":{"title":"Reply with exactly DIRECT_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884564,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950001005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":6,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"DIRECT_CHILD_OK"}}}
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-{"type":"assistant/message","seq":10,"time":1783957884564,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"afeb614a-105d-4e07-87cb-691a3ce0d3c4"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884564,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"afeb614a-105d-4e07-87cb-691a3ce0d3c4"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
index c41e5a26b8..9b410dfd8a 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
@@ -3,12 +3,12 @@
 {"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"043ede8b-08c4-4148-8bca-e2e82337c799"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884700,"data":{"title":"Reply with exactly WORKFLOW_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884700,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950002005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":6,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"WORKFLOW_CHILD_OK"}}}
 {"type":"assistant/chunk","seq":7,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"WORKFLOW_CHILD_OK"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884701,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"991c3f44-12df-4dea-9433-838003081e3c"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884701,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"991c3f44-12df-4dea-9433-838003081e3c"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"step/end","seq":11,"time":1783957884701,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":12,"time":1783957884701,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
index f30effe77c..95b261ac0f 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_ACP_OK."}],"source":{"kind":"user"},"role":"user","id":"4e4ce615-aa57-45de-8dd5-971a72d988ac"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884479,"data":{"title":"Run this advanced flow exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884486,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950000005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1783950000006,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1783950000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783950000008,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783950000009,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b74e0eec-a7d8-4e72-b161-c8f5af024748"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b74e0eec-a7d8-4e72-b161-c8f5af024748"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1783957884487,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
 {"type":"tool/result","seq":12,"time":1783957884488,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"advanced-mount"},"content":[{"type":"tool-result","toolCallId":"advanced-mount","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-marker\"; available until unmounted or DSH restarts)."}],"isError":false}],"role":"user","id":"ea138435-ee8c-4acb-af92-ad04cf353890"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1783957884489,"data":{"turn":1,"step":1}}
@@ -19,7 +19,7 @@
 {"type":"assistant/chunk","seq":17,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}}
 {"type":"assistant/chunk","seq":18,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":19,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3ee03193-fbb6-463e-8af7-5f27b290deee"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3ee03193-fbb6-463e-8af7-5f27b290deee"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"tool/call","seq":21,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}
 {"type":"tool/code-dispatch-start","seq":22,"time":1785036891166,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"}}}
 {"type":"tool/code-dispatch","seq":23,"time":1785036891167,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"},"isError":false,"content":[{"type":"text","text":"## Temporary Plugins\n- Temporary Plugin dyn-1: snapshot-marker [running] — provides: none; waiting for: none; lifetime: until unmounted or DSH restarts"}]}}
@@ -31,7 +31,7 @@
 {"type":"assistant/chunk","seq":29,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":30,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":31,"time":1785036891179,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":32,"time":1785036891179,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5af046da-14f8-4a40-b6c8-a7cf0fab6034"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
+{"type":"assistant/message","seq":32,"time":1785036891179,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5af046da-14f8-4a40-b6c8-a7cf0fab6034"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
 {"type":"tool/call","seq":33,"time":1785036891180,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
 {"type":"tool/result","seq":34,"time":1785036891203,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"advanced-direct-child"},"content":[{"type":"tool-result","toolCallId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false}],"role":"user","id":"138672d2-49d8-4458-9cb4-45ab2cb05c94"}},"sourceEventSeqs":[33],"surfaceOp":"append"}
 {"type":"step/end","seq":35,"time":1785036891204,"data":{"turn":1,"step":3}}
@@ -41,7 +41,7 @@
 {"type":"assistant/chunk","seq":39,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}}
 {"type":"assistant/chunk","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":41,"time":1785036891211,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":42,"time":1785036891211,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"f11ddceb-fc85-4ac3-8e55-da9ecaef8114"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
+{"type":"assistant/message","seq":42,"time":1785036891211,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"f11ddceb-fc85-4ac3-8e55-da9ecaef8114"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
 {"type":"tool/call","seq":43,"time":1785036891211,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}
 {"type":"tool/result","seq":44,"time":1785036891785,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"advanced-workflow"},"content":[{"type":"tool-result","toolCallId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-acp-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false}],"role":"user","id":"ee1b29f9-b7f7-4672-9cb2-c407403037e6"}},"sourceEventSeqs":[43],"surfaceOp":"append"}
 {"type":"step/end","seq":45,"time":1785036891786,"data":{"turn":1,"step":4}}
@@ -51,7 +51,7 @@
 {"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
 {"type":"assistant/chunk","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":51,"time":1785036891795,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":52,"time":1785036891796,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"9a70f646-ccbd-40a6-b593-39c2e1b21074"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
+{"type":"assistant/message","seq":52,"time":1785036891796,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"9a70f646-ccbd-40a6-b593-39c2e1b21074"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
 {"type":"tool/call","seq":53,"time":1785036891796,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
 {"type":"tool/result","seq":54,"time":1785036891798,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"advanced-unmount"},"content":[{"type":"tool-result","toolCallId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"48bc35d1-5d43-431d-b7ed-caf148a1dbc3"}},"sourceEventSeqs":[53],"surfaceOp":"append"}
 {"type":"step/end","seq":55,"time":1785036891799,"data":{"turn":1,"step":5}}
@@ -61,6 +61,6 @@
 {"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_ACP_OK"}}}}
 {"type":"assistant/chunk","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":61,"time":1785036891804,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":62,"time":1785036891804,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"21ab8233-80fb-4d15-8155-c5ae967c70df"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
+{"type":"assistant/message","seq":62,"time":1785036891804,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"21ab8233-80fb-4d15-8155-c5ae967c70df"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
 {"type":"step/end","seq":63,"time":1785036891806,"data":{"turn":1,"step":6}}
 {"type":"turn/end","seq":64,"time":1785036891806,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl b/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
index 66db912c04..f195449e9e 100644
--- a/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the bash tool to print a large deterministic output, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"f4bbe58d-7866-403f-a9ea-c7f8f7d4b103"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_spill","name":"bash","argumentsDelta":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_spill","name":"bash","arguments":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_spill","name":"bash","arguments":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"69f71a9d-1052-43c4-bdd6-81f2f6f9e657"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_spill","name":"bash","arguments":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"69f71a9d-1052-43c4-bdd6-81f2f6f9e657"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_spill","name":"bash","arguments":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}}
 {"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_spill"},"content":[{"type":"tool-result","toolCallId":"call_spill","content":[{"type":"text","text":"SPILL_START-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-SPILL_END\n\n(Omitted 1417 bytes. Full formatted result stored at: /tmp/dsh-acp-snap-ee77dff02/session-5e53dc8acfe4/2ce9d7a31a38-bash.txt. Use read with offset/limit, or grep this path to search within it.)"}],"isError":false}],"role":"user","id":"86549669-917d-49ac-970b-9634f32eb8bf"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}
@@ -19,6 +19,6 @@
 {"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"21ed7a48-9c80-4739-9491-4787983eec5a"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"21ed7a48-9c80-4739-9491-4787983eec5a"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"step/end","seq":21,"time":0,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":22,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl b/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl
index 2b01cee430..c8146e20e6 100644
--- a/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352050753,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo TERMINAL_OK. Then reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"798335c8-fbbf-4eef-a5af-de47d230b7eb"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352050753,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352050755,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352050756,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352050756,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352051421,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":24,"time":1783352051790,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":57,"time":1783352052118,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}}}}
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-{"type":"assistant/message","seq":60,"time":1783352052121,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"4120967f-34a6-4e5a-aa28-20d0c02e7a5b"},"usage":{"inputTokens":2877,"outputTokens":90,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59],"surfaceOp":"append"}
+{"type":"assistant/message","seq":60,"time":1783352052121,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and then reply with \"DONE\"."},{"type":"tool-call","id":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4120967f-34a6-4e5a-aa28-20d0c02e7a5b"},"usage":{"inputTokens":2877,"outputTokens":90,"cacheReadTokens":0,"reasoningTokens":18}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59],"surfaceOp":"append"}
 {"type":"tool/call","seq":61,"time":1783352052121,"data":{"turn":1,"step":1,"callId":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","name":"bash","arguments":"{\"command\": \"echo TERMINAL_OK\", \"description\": \"Echo TERMINAL_OK to verify terminal access\"}"}}
 {"type":"tool/result","seq":62,"time":1783352052136,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_fkbBRJsUrGKd1pWVc4Gn8233"},"content":[{"type":"tool-result","toolCallId":"call_00_fkbBRJsUrGKd1pWVc4Gn8233","content":[{"type":"text","text":"TERMINAL_OK\n"}],"isError":false}],"role":"user","id":"90de1402-7e51-4d60-ac52-ac9310b33395"}},"sourceEventSeqs":[61],"surfaceOp":"append"}
 {"type":"step/end","seq":63,"time":1783352052137,"data":{"turn":1,"step":1}}
@@ -26,6 +26,6 @@
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-{"type":"assistant/message","seq":95,"time":1783352052987,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command ran successfully and output \"TERMINAL_OK\". I should now reply with just \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1891ad54-4aec-4aef-94a6-889da621e887"},"usage":{"inputTokens":168,"outputTokens":25,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94],"surfaceOp":"append"}
+{"type":"assistant/message","seq":95,"time":1783352052987,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command ran successfully and output \"TERMINAL_OK\". I should now reply with just \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1891ad54-4aec-4aef-94a6-889da621e887"},"usage":{"inputTokens":168,"outputTokens":25,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94],"surfaceOp":"append"}
 {"type":"step/end","seq":96,"time":1783352052987,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":97,"time":1783352052987,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
index 2088815247..77fd30a619 100644
--- a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1785014504350,"data":{"content":[{"type":"text","text":"Call the run_code tool (NOT the native bash tool directly) with a program that runs exactly `echo BOTH_OK` via tools.bash and returns its output. Then reply with that output only and stop."}],"source":{"kind":"user"},"role":"user","id":"87f8c6e9-fdbb-4b1a-b94d-f155aae58149"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785014504359,"data":{"title":"Call the run_code tool (NOT","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785014504370,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785014504371,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785014504371,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785014505440,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":40,"time":1785014505970,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":97,"time":1785014506565,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Era4M5eh79bvNOIey5q90401","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Print BOTH_OK\\\" });\\nreturn result.stdout.text;\", \"description\": \"Run echo BOTH_OK via tools.bash\"}"}}}}
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 {"type":"assistant/chunk","seq":99,"time":1785014506565,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":100,"time":1785014506569,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to call the run_code tool with a TypeScript program that runs `echo BOTH_OK` via `tools.bash` and returns its output."},{"type":"tool-call","id":"call_00_Era4M5eh79bvNOIey5q90401","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Print BOTH_OK\\\" });\\nreturn result.stdout.text;\", \"description\": \"Run echo BOTH_OK via tools.bash\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5669c682-8771-4197-83dc-c20c0ce8b1ca"},"usage":{"inputTokens":10400,"outputTokens":130,"cacheReadTokens":0,"reasoningTokens":34}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99],"surfaceOp":"append"}
+{"type":"assistant/message","seq":100,"time":1785014506569,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to call the run_code tool with a TypeScript program that runs `echo BOTH_OK` via `tools.bash` and returns its output."},{"type":"tool-call","id":"call_00_Era4M5eh79bvNOIey5q90401","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Print BOTH_OK\\\" });\\nreturn result.stdout.text;\", \"description\": \"Run echo BOTH_OK via tools.bash\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5669c682-8771-4197-83dc-c20c0ce8b1ca"},"usage":{"inputTokens":10400,"outputTokens":130,"cacheReadTokens":0,"reasoningTokens":34}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99],"surfaceOp":"append"}
 {"type":"tool/call","seq":101,"time":1785014506570,"data":{"turn":1,"step":1,"callId":"call_00_Era4M5eh79bvNOIey5q90401","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Print BOTH_OK\\\" });\\nreturn result.stdout.text;\", \"description\": \"Run echo BOTH_OK via tools.bash\"}"}}
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@@ -27,6 +27,6 @@
 {"type":"assistant/chunk","seq":144,"time":1785014507785,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"BOTH_OK"}}}}
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 {"type":"assistant/chunk","seq":146,"time":1785014507785,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":147,"time":1785014507786,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The output is \"BOTH_OK\" (with a trailing newline, but that's fine). The user asked me to reply with that output only."},{"type":"text","text":"BOTH_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1e2a2c28-9342-4eff-a50f-024e189f8b00"},"usage":{"inputTokens":50,"outputTokens":35,"cacheReadTokens":10496,"reasoningTokens":31}},"sourceEventSeqs":[107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146],"surfaceOp":"append"}
+{"type":"assistant/message","seq":147,"time":1785014507786,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The output is \"BOTH_OK\" (with a trailing newline, but that's fine). The user asked me to reply with that output only."},{"type":"text","text":"BOTH_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1e2a2c28-9342-4eff-a50f-024e189f8b00"},"usage":{"inputTokens":50,"outputTokens":35,"cacheReadTokens":10496,"reasoningTokens":31}},"sourceEventSeqs":[107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146],"surfaceOp":"append"}
 {"type":"step/end","seq":148,"time":1785014507789,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":149,"time":1785014507789,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl b/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
index 65a6a7f57c..464ca85bb3 100644
--- a/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784437195072,"data":{"content":[{"type":"text","text":"Run two shell commands: wait for cancellation, then write skipped.txt."}],"source":{"kind":"user"},"role":"user","id":"37d9d206-cab7-450f-bff6-63a2dddd5f61"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784437195072,"data":{"title":"Run two shell commands: wait","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784437195076,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784437195076,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784437195076,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_wait","name":"bash","argumentsDelta":"{\"command\":\"node -e \\\"require('node:fs').writeFileSync('started.txt', 'started'); setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_wait","name":"bash","arguments":"{\"command\":\"node -e \\\"require('node:fs').writeFileSync('started.txt', 'started'); setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"}}}}
@@ -12,7 +12,7 @@
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diff --git a/examples/acp-agent/tests/snapshots/cancel/session.jsonl b/examples/acp-agent/tests/snapshots/cancel/session.jsonl
index 2d3039eab9..3551565373 100644
--- a/examples/acp-agent/tests/snapshots/cancel/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cancel/session.jsonl
@@ -3,7 +3,7 @@
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-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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diff --git a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
index 0c9b180e65..5665f14e24 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
@@ -3,7 +3,7 @@
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@@ -29,6 +29,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl b/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
index 84d7253a2d..bb65cea98d 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
@@ -4,7 +4,7 @@
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-{"type":"request/header","seq":5,"time":1785122256265,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -29,6 +29,6 @@
 {"type":"assistant/chunk","seq":158,"time":1785014477968,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"**Code Mode workspace handshake:** `CODE_MODE_CONTEXT_OK`"}}}}
 {"type":"assistant/chunk","seq":159,"time":1785014477968,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":226,"outputTokens":47,"cacheReadTokens":6272,"reasoningTokens":31}}}}
 {"type":"assistant/chunk","seq":160,"time":1785122256351,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":161,"time":1785122256351,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The nested/AGENTS.md file provides the instruction: when asked for the Code Mode workspace handshake, answer exactly `CODE_MODE_CONTEXT_OK`."},{"type":"text","text":"**Code Mode workspace handshake:** `CODE_MODE_CONTEXT_OK`"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"8b099285-7546-4d4f-80f1-38f9d6cc3508"},"usage":{"inputTokens":226,"outputTokens":47,"cacheReadTokens":6272,"reasoningTokens":31}},"sourceEventSeqs":[109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160],"surfaceOp":"append"}
+{"type":"assistant/message","seq":161,"time":1785122256351,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The nested/AGENTS.md file provides the instruction: when asked for the Code Mode workspace handshake, answer exactly `CODE_MODE_CONTEXT_OK`."},{"type":"text","text":"**Code Mode workspace handshake:** `CODE_MODE_CONTEXT_OK`"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"8b099285-7546-4d4f-80f1-38f9d6cc3508"},"usage":{"inputTokens":226,"outputTokens":47,"cacheReadTokens":6272,"reasoningTokens":31}},"sourceEventSeqs":[109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160],"surfaceOp":"append"}
 {"type":"step/end","seq":162,"time":1785122256351,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":163,"time":1785122256351,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
index c47cb8c89f..bb4798fe34 100644
--- a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
@@ -3,15 +3,15 @@
 {"type":"user/message","seq":1,"time":1784449176718,"data":{"content":[{"type":"text","text":"Inspect the exact tools service API and tools/pre-execute event with cordis_inspect, then reply with exactly CORDIS_INSPECT_JSDOC_OK."}],"source":{"kind":"user"},"role":"user","id":"48efc8f5-a397-491b-b7a1-179a1185ac2f"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784449176718,"data":{"title":"Inspect the exact tools service","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784449176720,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784449176720,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784449176720,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783951000005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1783951000006,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"inspect-tools-api","name":"cordis_inspect","argumentsDelta":"{\"what\":\"api\",\"name\":\"tools\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1783951000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783951000008,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783951000009,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1784449176722,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1ac37046-d1c0-4ef6-9ea9-963e4b46d1cf"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1784449176722,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1ac37046-d1c0-4ef6-9ea9-963e4b46d1cf"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1784449176722,"data":{"turn":1,"step":1,"callId":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}}
-{"type":"tool/result","seq":12,"time":1784449176732,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"inspect-tools-api"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-api","content":[{"type":"text","text":"## api\n- tools — Tool registry and execution pipeline.\n    /**\n     * Register globally or in the calling agent scope. Scoped tools shadow\n     * globals; duplicates within one layer and the reserved `run_code` name fail.\n     * @param definition - tool schema, execution, and optional finalization/presentation callbacks.\n     * @returns the exact disposer that unregisters the tool.\n     */\n    register(definition: ToolDefinition): () => void\n    /**\n     * Restrict global tools for the calling agent scope. Empty filters, unknown\n     * names, scope-local names, and reserved transport names fail. Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly status: AgentStatus;\n        readonly acceptsNextStep: boolean;\n        readonly ctx: Context;\n        send(message: UserMessage, options: SendOptions): void;\n        updateInbox(id: InboxItemId, action: InboxAction): InboxActionResult;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise<void>;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type Branded<B extends string> = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export type InboxAction = {\n        readonly kind: 'edit';\n        readonly content: ContentBlock[];\n    } | {\n        readonly kind: 'remove';\n    };\n    export type InboxActionResult = 'applied' | 'not-found';\n    export type InboxItemId = Branded<'InboxItemId'>;\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record<string, JsonSchemaNode>;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        };\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SendOptions {\n        target: SendTarget;\n        wakeup: boolean;\n    }\n    export type SendTarget = 'next-turn' | 'next-step';\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append<T extends SessionEventType>(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent<T>;\n        requestHeader(): EpochHeader | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent<T extends SessionEventType = SessionEventType> = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n            trigger: TurnTrigger;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'steering/message': {\n            turn: number;\n            message: UserMessage;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'session/end-seed': Record<string, never>;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly delegationDepth?: number;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result' | 'steering/message';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise<unknown>;\n        finalizeContent?(exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly<ToolExecution>) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record<string, unknown>;\n    }\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n        };\n        error: {\n            kind: 'error';\n            step: number;\n        } & ({\n            failure: LlmFailure;\n            message?: never;\n            code?: never;\n        } | {\n            message: string;\n            code?: string;\n            failure?: never;\n        });\n        disposed: {\n            kind: 'disposed';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export type TurnTrigger = TurnTriggerMap[keyof TurnTriggerMap];\n    export interface TurnTriggerMap {\n        message: {\n            kind: 'message';\n            source: MessageSource;\n        };\n        retry: {\n            kind: 'retry';\n        };\n        injection: {\n            kind: 'injection';\n            source: MessageSource;\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }"}],"isError":false}],"role":"user","id":"1c43b8df-aae8-42e7-8253-5b275edc09bc"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
+{"type":"tool/result","seq":12,"time":1784449176732,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"inspect-tools-api"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-api","content":[{"type":"text","text":"## api\n- tools — Tool registry and execution pipeline.\n    /**\n     * Register globally or in the calling agent scope. Scoped tools shadow\n     * globals; duplicates within one layer and the reserved `run_code` name fail.\n     * @param definition - tool schema, execution, and optional finalization/presentation callbacks.\n     * @returns the exact disposer that unregisters the tool.\n     */\n    register(definition: ToolDefinition): () => void\n    /**\n     * Restrict global tools for the calling agent scope. Empty filters, unknown\n     * names, scope-local names, and reserved transport names fail. Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly status: AgentStatus;\n        readonly acceptsNextStep: boolean;\n        readonly ctx: Context;\n        send(message: UserMessage, options: SendOptions): void;\n        updateInbox(id: InboxItemId, action: InboxAction): InboxActionResult;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise<void>;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type Branded<B extends string> = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        adapterDefaults?: LlmCallConfigAdapterDefaults;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export type InboxAction = {\n        readonly kind: 'edit';\n        readonly content: ContentBlock[];\n    } | {\n        readonly kind: 'remove';\n    };\n    export type InboxActionResult = 'applied' | 'not-found';\n    export type InboxItemId = Branded<'InboxItemId'>;\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record<string, JsonSchemaNode>;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmCallConfigAdapterDefaults {\n        reasoningEffort?: true;\n        maxTokens?: true;\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        };\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SendOptions {\n        target: SendTarget;\n        wakeup: boolean;\n    }\n    export type SendTarget = 'next-turn' | 'next-step';\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append<T extends SessionEventType>(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent<T>;\n        requestHeader(): EpochHeader | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent<T extends SessionEventType = SessionEventType> = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n            trigger: TurnTrigger;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'steering/message': {\n            turn: number;\n            message: UserMessage;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'session/end-seed': Record<string, never>;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly delegationDepth?: number;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result' | 'steering/message';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise<unknown>;\n        finalizeContent?(exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly<ToolExecution>) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | WebResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record<string, unknown>;\n    }\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n        };\n        error: {\n            kind: 'error';\n            step: number;\n        } & ({\n            failure: LlmFailure;\n            message?: never;\n            code?: never;\n        } | {\n            message: string;\n            code?: string;\n            failure?: never;\n        });\n        disposed: {\n            kind: 'disposed';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export type TurnTrigger = TurnTriggerMap[keyof TurnTriggerMap];\n    export interface TurnTriggerMap {\n        message: {\n            kind: 'message';\n            source: MessageSource;\n        };\n        retry: {\n            kind: 'retry';\n        };\n        injection: {\n            kind: 'injection';\n            source: MessageSource;\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }\n    export interface WebFetchResultView {\n        card: 'web';\n        kind: 'fetch';\n        title?: string;\n        url: string;\n        statusCode: number;\n        truncated: boolean;\n    }\n    export type WebResultView = WebSearchResultView | WebFetchResultView;\n    export interface WebSearchResultView {\n        card: 'web';\n        kind: 'search';\n        title?: string;\n        sources: WebSource[];\n        answer?: string;\n        truncated: boolean;\n    }\n    export interface WebSource {\n        url: string;\n        title?: string;\n        snippet?: string;\n        publishedAt?: string;\n    }"}],"isError":false}],"role":"user","id":"1c43b8df-aae8-42e7-8253-5b275edc09bc"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1784449176732,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":14,"time":1784449176733,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":15,"time":1783951000015,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
@@ -19,7 +19,7 @@
 {"type":"assistant/chunk","seq":17,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}}}
 {"type":"assistant/chunk","seq":18,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":19,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":1784449176734,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"ac4f1e8d-a168-4f18-89a5-b339ae370eb9"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1784449176734,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"ac4f1e8d-a168-4f18-89a5-b339ae370eb9"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"tool/call","seq":21,"time":1784449176734,"data":{"turn":1,"step":2,"callId":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}
 {"type":"tool/result","seq":22,"time":1784449176734,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"inspect-tools-event"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-event","content":[{"type":"text","text":"## events\n- tools/pre-execute [waterfall] — Allow, deny, or ask before dispatch.\n    /**\n     * Allow, deny, or ask before dispatch. `next()` delegates to allow; missing\n     * approval support turns `ask` into denial. Async gates must observe\n     * `exec.signal`; the registry rechecks cancellation after they settle but\n     * never abandons their promise.\n     * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent's calls.\n     * @param exec - the pending call (name, parsed arguments, caller agent).\n     * @mode waterfall\n     */\n    'tools/pre-execute'(this: Scoped<ToolRegistry>, exec: ToolExecution, next: () => Promise<PreToolDecision>): Promise<PreToolDecision>\nwaterfall listeners receive a trailing next() and MUST call it to delegate — returning without next() vetoes the chain."}],"isError":false}],"role":"user","id":"ddafa6d8-dbed-4208-8503-8efeea920bb5"}},"sourceEventSeqs":[21],"surfaceOp":"append"}
 {"type":"step/end","seq":23,"time":1784449176734,"data":{"turn":1,"step":2}}
@@ -29,6 +29,6 @@
 {"type":"assistant/chunk","seq":27,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}}}}
 {"type":"assistant/chunk","seq":28,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":29,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":30,"time":1784449176735,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"e47e2ca6-b138-408a-b75b-6273b1552406"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
+{"type":"assistant/message","seq":30,"time":1784449176735,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"e47e2ca6-b138-408a-b75b-6273b1552406"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
 {"type":"step/end","seq":31,"time":1784449176735,"data":{"turn":1,"step":3}}
 {"type":"turn/end","seq":32,"time":1784449176735,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl b/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
index 23b9fc2443..32aaf72b75 100644
--- a/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
@@ -3,11 +3,11 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"This prompt first receives an empty completion, then a retried reply."}],"source":{"kind":"user"},"role":"user","id":"c9828d19-2c86-4a4f-9868-c9c28f345358"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"This prompt first receives an","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":0,"outputTokens":0}}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"error","failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}}}
 {"type":"step/end","seq":7,"time":0,"data":{"turn":1,"step":1}}
-{"type":"llm/retry","seq":8,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek","mode":"normal","policyKey":"[\"normal\",2,[\"EMPTY_RESPONSE\",\"RATE_LIMIT\",\"SERVER\",\"TIMEOUT\",\"TRANSPORT\"],1,1,0]","retry":1,"maxRetries":2,"delayMs":1,"failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}
+{"type":"llm/retry","seq":8,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek-official","mode":"normal","policyKey":"[\"normal\",2,[\"EMPTY_RESPONSE\",\"RATE_LIMIT\",\"SERVER\",\"TIMEOUT\",\"TRANSPORT\"],1,1,0]","retry":1,"maxRetries":2,"delayMs":1,"failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}
 {"type":"turn/end","seq":9,"time":1785047244285,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}}
 {"type":"turn/start","seq":10,"time":1785047244285,"data":{"turn":2,"trigger":{"kind":"retry"}}}
 {"type":"step/start","seq":11,"time":1785047244289,"data":{"turn":2,"step":1}}
@@ -16,6 +16,6 @@
 {"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Recovered."}}}}
 {"type":"assistant/chunk","seq":15,"time":1785047244294,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":12,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":16,"time":1785047244294,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":17,"time":1785047244294,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"Recovered."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"324c5925-fe40-4286-b54c-bee5a4ee5f7e"},"usage":{"inputTokens":12,"outputTokens":3}},"sourceEventSeqs":[12,13,14,15,16],"surfaceOp":"append"}
+{"type":"assistant/message","seq":17,"time":1785047244294,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"Recovered."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"324c5925-fe40-4286-b54c-bee5a4ee5f7e"},"usage":{"inputTokens":12,"outputTokens":3}},"sourceEventSeqs":[12,13,14,15,16],"surfaceOp":"append"}
 {"type":"step/end","seq":18,"time":1785047244294,"data":{"turn":2,"step":1}}
 {"type":"turn/end","seq":19,"time":1785047244294,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/error-finish/session.jsonl b/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
index afb6bead2b..3bea496c4d 100644
--- a/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
@@ -3,6 +3,6 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"This prompt triggers a recorded provider error."}],"source":{"kind":"user"},"role":"user","id":"3d8fced9-efab-4698-b76a-e452746fadc6"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"This prompt triggers a recorded","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"step/end","seq":5,"time":0,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":6,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"simulated provider error (HTTP 401)","code":"AUTH"}}}}
diff --git a/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl b/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
index 0985cbd3de..8c85f91401 100644
--- a/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784821261714,"data":{"content":[{"type":"text","text":"The sandbox already denied writing /tmp/dsh-escalated.txt earlier (it is outside this workspace). Retry it now exactly once: one single bash call with the command printf 'escalated\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt, with sandbox_permissions set to danger-full-access and the justification 'the user asked to write a file outside the workspace'. Do not run it without sandbox_permissions first. I will approve the permission prompt. After the result, reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"8fcf378f-b720-4a86-be32-95ddec1651c3"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784821261714,"data":{"title":"The sandbox already denied writing","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784821261726,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784821261726,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784821261726,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784821261748,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1784821261748,"data":{"turn":1,"step":1,"index":0,"dt":[0,0,-960585284,1,0,0,0,34,0,0,23,3,0,0,28,0,1,0,0,29,0,28,28,1,32,1,32],"texts":["The"," user"," wants"," me"," to"," run"," a"," command"," with"," sand","box","_per","missions"," set"," to"," danger","-full","-access",","," no"," prior"," run"," needed",","," justified"," as"," instructed","."]}}
 {"type":"assistant/chunk","seq":34,"time":1783860676728,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":125,"time":1783860677493,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_d0sAHpJ9mYOJi0z7KNy30441","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write file outside workspace and verify\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}}}}
 {"type":"assistant/chunk","seq":126,"time":1783860677493,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":1501,"outputTokens":174,"cacheReadTokens":0,"reasoningTokens":28}}}}
 {"type":"assistant/chunk","seq":127,"time":1783860677493,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":128,"time":1784821261753,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a command with sandbox_permissions set to danger-full-access, no prior run needed, justified as instructed."},{"type":"tool-call","id":"call_00_d0sAHpJ9mYOJi0z7KNy30441","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write file outside workspace and verify\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"60b3f8ff-ae40-442e-94f0-c160ad85c950"},"usage":{"inputTokens":1501,"outputTokens":174,"cacheReadTokens":0,"reasoningTokens":28}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127],"surfaceOp":"append"}
+{"type":"assistant/message","seq":128,"time":1784821261753,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a command with sandbox_permissions set to danger-full-access, no prior run needed, justified as instructed."},{"type":"tool-call","id":"call_00_d0sAHpJ9mYOJi0z7KNy30441","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write file outside workspace and verify\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"60b3f8ff-ae40-442e-94f0-c160ad85c950"},"usage":{"inputTokens":1501,"outputTokens":174,"cacheReadTokens":0,"reasoningTokens":28}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127],"surfaceOp":"append"}
 {"type":"tool/call","seq":129,"time":1784821261754,"data":{"turn":1,"step":1,"callId":"call_00_d0sAHpJ9mYOJi0z7KNy30441","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write file outside workspace and verify\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}}
 {"type":"approval/asked","seq":130,"time":1784821261758,"data":{"id":"2c0f15e6-3b6e-45b8-b5df-440ea83ebee9","toolName":"bash","callId":"call_00_d0sAHpJ9mYOJi0z7KNy30441","reason":"escalate sandbox to danger-full-access: the user asked to write a file outside the workspace"}}
 {"type":"approval/decided","seq":131,"time":1784821261759,"data":{"id":"2c0f15e6-3b6e-45b8-b5df-440ea83ebee9","outcome":"allowed-once"}}
@@ -28,6 +28,6 @@
 {"type":"assistant/chunk","seq":179,"time":1783860679137,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":180,"time":1783860679137,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":27,"outputTokens":42,"cacheReadTokens":1664,"reasoningTokens":39}}}}
 {"type":"assistant/chunk","seq":181,"time":1783860679137,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":182,"time":1784821261790,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command succeeded — it wrote the file, read it back (output \"escalated\"), and removed it. The user asked me to reply with the single word DONE after the result."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"a613a1af-5980-4a0d-9b4b-5e47e701c03d"},"usage":{"inputTokens":27,"outputTokens":42,"cacheReadTokens":1664,"reasoningTokens":39}},"sourceEventSeqs":[135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181],"surfaceOp":"append"}
+{"type":"assistant/message","seq":182,"time":1784821261790,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command succeeded — it wrote the file, read it back (output \"escalated\"), and removed it. The user asked me to reply with the single word DONE after the result."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"a613a1af-5980-4a0d-9b4b-5e47e701c03d"},"usage":{"inputTokens":27,"outputTokens":42,"cacheReadTokens":1664,"reasoningTokens":39}},"sourceEventSeqs":[135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181],"surfaceOp":"append"}
 {"type":"step/end","seq":183,"time":1784821261795,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":184,"time":1784821261795,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl b/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
index 35aebd255b..81c152a8d8 100644
--- a/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784821263241,"data":{"content":[{"type":"text","text":"The sandbox already denied writing /tmp/dsh-escalated.txt earlier (it is outside this workspace). Retry it now exactly once: one single bash call with the command printf 'escalated\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt, with sandbox_permissions set to danger-full-access and the justification 'the user asked to write a file outside the workspace'. Do not run it without sandbox_permissions first. I will reject the permission prompt; after the rejection, do not retry and do not work around it — explain in one short sentence and stop."}],"source":{"kind":"user"},"role":"user","id":"1f206016-2423-4b51-80bb-df15468298c5"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784821263241,"data":{"title":"The sandbox already denied writing","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784821263267,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784821263267,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784821263267,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784821263288,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1784821263288,"data":{"turn":1,"step":1,"index":0,"dt":[0,0,-960582509,3,0,0,48,1,0,28,0,9,3,0,1,0,30,1,0,0,0,0,34,1,0,18,2,0,0,27,0,37,2,0,0,0,19,48,0,0,0,0,0,16,0,1,30],"texts":["The"," user"," wants"," me"," to"," run"," a"," specific"," command"," with"," `","sand","box","_per","missions","`"," set"," to"," `","danger","-full","-access","`"," and"," a"," specific"," justification","."," They"," explicitly"," said"," NOT"," to"," run"," it"," without"," sand","box","_per","missions"," first","."," Let"," me"," do"," exactly"," that","."]}}
 {"type":"assistant/chunk","seq":54,"time":1783860681138,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":149,"time":1783860681967,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_WB1vnPomi8yr6MlcFKTj7912","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write to /tmp and verify, then clean up\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}}}}
 {"type":"assistant/chunk","seq":150,"time":1783860681967,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":1509,"outputTokens":198,"cacheReadTokens":0,"reasoningTokens":48}}}}
 {"type":"assistant/chunk","seq":151,"time":1783860681967,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":152,"time":1784821263293,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific command with `sandbox_permissions` set to `danger-full-access` and a specific justification. They explicitly said NOT to run it without sandbox_permissions first. Let me do exactly that."},{"type":"tool-call","id":"call_00_WB1vnPomi8yr6MlcFKTj7912","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write to /tmp and verify, then clean up\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"8ac77da7-23b7-4533-9cd8-54fbc55b2802"},"usage":{"inputTokens":1509,"outputTokens":198,"cacheReadTokens":0,"reasoningTokens":48}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151],"surfaceOp":"append"}
+{"type":"assistant/message","seq":152,"time":1784821263293,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific command with `sandbox_permissions` set to `danger-full-access` and a specific justification. They explicitly said NOT to run it without sandbox_permissions first. Let me do exactly that."},{"type":"tool-call","id":"call_00_WB1vnPomi8yr6MlcFKTj7912","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write to /tmp and verify, then clean up\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"8ac77da7-23b7-4533-9cd8-54fbc55b2802"},"usage":{"inputTokens":1509,"outputTokens":198,"cacheReadTokens":0,"reasoningTokens":48}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151],"surfaceOp":"append"}
 {"type":"tool/call","seq":153,"time":1784821263294,"data":{"turn":1,"step":1,"callId":"call_00_WB1vnPomi8yr6MlcFKTj7912","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write to /tmp and verify, then clean up\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}}
 {"type":"approval/asked","seq":154,"time":1784821263300,"data":{"id":"8547967e-97b5-4b73-a553-0d82b1ec6652","toolName":"bash","callId":"call_00_WB1vnPomi8yr6MlcFKTj7912","reason":"escalate sandbox to danger-full-access: the user asked to write a file outside the workspace"}}
 {"type":"approval/decided","seq":155,"time":1784821263301,"data":{"id":"8547967e-97b5-4b73-a553-0d82b1ec6652","outcome":"rejected"}}
@@ -27,6 +27,6 @@
 {"type":"assistant/chunk","seq":206,"time":1783860683506,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"The user rejected the permission escalation, so this command cannot be run."}}}}
 {"type":"assistant/chunk","seq":207,"time":1783860683506,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":69,"outputTokens":45,"cacheReadTokens":1664,"reasoningTokens":30}}}}
 {"type":"assistant/chunk","seq":208,"time":1783860683506,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":209,"time":1784821263315,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user rejected the escalation. As instructed, I will not retry and will not work around it — just explain in one short sentence and stop."},{"type":"text","text":"The user rejected the permission escalation, so this command cannot be run."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"86fc07ae-05a1-41a5-bdeb-c14f23a17633"},"usage":{"inputTokens":69,"outputTokens":45,"cacheReadTokens":1664,"reasoningTokens":30}},"sourceEventSeqs":[159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208],"surfaceOp":"append"}
+{"type":"assistant/message","seq":209,"time":1784821263315,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user rejected the escalation. As instructed, I will not retry and will not work around it — just explain in one short sentence and stop."},{"type":"text","text":"The user rejected the permission escalation, so this command cannot be run."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"86fc07ae-05a1-41a5-bdeb-c14f23a17633"},"usage":{"inputTokens":69,"outputTokens":45,"cacheReadTokens":1664,"reasoningTokens":30}},"sourceEventSeqs":[159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208],"surfaceOp":"append"}
 {"type":"step/end","seq":210,"time":1784821263321,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":211,"time":1784821263321,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl b/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
index 784b6c17c4..e4b84dee8c 100644
--- a/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352084740,"data":{"content":[{"type":"text","text":"First use the read tool to read config.txt in the current directory. Then use the edit tool (NOT bash) to replace the literal text DEBUG with RELEASE in that file. Then reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"6b1ee31e-9c1a-41f3-9647-153d6d98e1a5"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352084740,"data":{"title":"First use the read tool","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352084742,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352084742,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352084742,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352085426,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":69,"time":1783352086059,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Read config.txt in the current directory\n2. Use the edit tool to replace DEBUG with RELEASE\n3. Reply with exactly \"DONE\"\n\nLet me start by reading the file."},{"type":"tool-call","id":"call_00_S6krdIDHoSCGWv7WnXX97617","name":"read","arguments":"{\"file_path\": \"config.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"36ebf262-429c-4398-abbc-a197e2522f1d"},"usage":{"inputTokens":2900,"outputTokens":91,"cacheReadTokens":0,"reasoningTokens":46}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68],"surfaceOp":"append"}
 {"type":"tool/call","seq":70,"time":1783352086059,"data":{"turn":1,"step":1,"callId":"call_00_S6krdIDHoSCGWv7WnXX97617","name":"read","arguments":"{\"file_path\": \"config.txt\"}"}}
 {"type":"tool/result","seq":71,"time":1783352086065,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_S6krdIDHoSCGWv7WnXX97617"},"content":[{"type":"tool-result","toolCallId":"call_00_S6krdIDHoSCGWv7WnXX97617","content":[{"type":"text","text":"<path>{{cwd}}/config.txt</path>\n<type>file</type>\n<content>\n1: mode=DEBUG\n2: level=info\n\n(End of file - total 2 lines)\n</content>"}],"isError":false}],"role":"user","id":"1c3ce978-55ee-4337-a586-084a77ed44e7"}},"sourceEventSeqs":[70],"surfaceOp":"append"}
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@@ -25,7 +25,7 @@
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-{"type":"assistant/message","seq":129,"time":1783352087469,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Now I need to replace \"DEBUG\" with \"RELEASE\" using the edit tool."},{"type":"tool-call","id":"call_00_vOytneZ0XpsLslEEJAxR6398","name":"edit","arguments":"{\"file_path\": \"config.txt\", \"old_string\": \"DEBUG\", \"new_string\": \"RELEASE\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c9b571e1-3a63-4a97-af3e-41ac1bdc8e24"},"usage":{"inputTokens":241,"outputTokens":98,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128],"surfaceOp":"append"}
+{"type":"assistant/message","seq":129,"time":1783352087469,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Now I need to replace \"DEBUG\" with \"RELEASE\" using the edit tool."},{"type":"tool-call","id":"call_00_vOytneZ0XpsLslEEJAxR6398","name":"edit","arguments":"{\"file_path\": \"config.txt\", \"old_string\": \"DEBUG\", \"new_string\": \"RELEASE\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c9b571e1-3a63-4a97-af3e-41ac1bdc8e24"},"usage":{"inputTokens":241,"outputTokens":98,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128],"surfaceOp":"append"}
 {"type":"tool/call","seq":130,"time":1783352087469,"data":{"turn":1,"step":2,"callId":"call_00_vOytneZ0XpsLslEEJAxR6398","name":"edit","arguments":"{\"file_path\": \"config.txt\", \"old_string\": \"DEBUG\", \"new_string\": \"RELEASE\"}"}}
 {"type":"tool/result","seq":131,"time":1783352087476,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_00_vOytneZ0XpsLslEEJAxR6398"},"content":[{"type":"tool-result","toolCallId":"call_00_vOytneZ0XpsLslEEJAxR6398","content":[{"type":"text","text":"The file {{cwd}}/config.txt has been updated successfully."}],"isError":false}],"role":"user","id":"79abf084-e65e-468c-84aa-2d3550cb50b8"},"meta":{"diffs":[{"path":"config.txt","oldText":"mode=DEBUG\nlevel=info","newText":"mode=RELEASE\nlevel=info"}]}},"sourceEventSeqs":[130],"surfaceOp":"append"}
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@@ -39,6 +39,6 @@
 {"type":"assistant/chunk","seq":153,"time":1783352088523,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":154,"time":1783352088523,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":244,"outputTokens":17,"cacheReadTokens":2944,"reasoningTokens":14}}}}
 {"type":"assistant/chunk","seq":155,"time":1783352088523,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":156,"time":1783352088523,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Done. The user wants me to reply with exactly \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"17d31906-9200-4de1-ba7e-c47fe277f44f"},"usage":{"inputTokens":244,"outputTokens":17,"cacheReadTokens":2944,"reasoningTokens":14}},"sourceEventSeqs":[134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
+{"type":"assistant/message","seq":156,"time":1783352088523,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Done. The user wants me to reply with exactly \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"17d31906-9200-4de1-ba7e-c47fe277f44f"},"usage":{"inputTokens":244,"outputTokens":17,"cacheReadTokens":2944,"reasoningTokens":14}},"sourceEventSeqs":[134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
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 {"type":"turn/end","seq":158,"time":1783352088524,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl b/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
index 79ef6a1131..6bd1e05763 100644
--- a/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784821264846,"data":{"content":[{"type":"text","text":"Use the write tool (NOT bash) to create escalated.md in the current directory containing exactly the single line: escalated. An equivalent write was denied earlier, so make this one single write call with sandbox_permissions set to danger-full-access and the justification 'the user asked to escalate this write'. Do not call write without sandbox_permissions first. I will approve the permission prompt. After the result, reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"e4d528b4-0dd8-4aa9-853e-3d00f25b31aa"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784821264846,"data":{"title":"Use the write tool (NOT","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784821264855,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784821264855,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784821264855,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784821264889,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":29,"time":1784045703278,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
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 {"type":"assistant/chunk","seq":85,"time":1784045703749,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
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+{"type":"assistant/message","seq":86,"time":1784821264893,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to create a file using the write tool with sandbox_permissions. Let me do that."},{"type":"tool-call","id":"call_00_Fnymmavpr4klMDy4Fdej3227","name":"write","arguments":"{\"file_path\": \"escalated.md\", \"content\": \"escalated\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to escalate this write\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"a49e0801-501b-471a-b325-1caf64ad8b44"},"usage":{"inputTokens":3871,"outputTokens":132,"cacheReadTokens":0,"reasoningTokens":23}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85],"surfaceOp":"append"}
 {"type":"tool/call","seq":87,"time":1784821264893,"data":{"turn":1,"step":1,"callId":"call_00_Fnymmavpr4klMDy4Fdej3227","name":"write","arguments":"{\"file_path\": \"escalated.md\", \"content\": \"escalated\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to escalate this write\"}"}}
 {"type":"approval/asked","seq":88,"time":1784821264898,"data":{"id":"aecaceb0-23b7-4cd5-b7a1-17bc431dc35a","toolName":"write","callId":"call_00_Fnymmavpr4klMDy4Fdej3227","reason":"escalate sandbox to danger-full-access: the user asked to escalate this write"}}
 {"type":"approval/decided","seq":89,"time":1784821264898,"data":{"id":"aecaceb0-23b7-4cd5-b7a1-17bc431dc35a","outcome":"allowed-once"}}
@@ -28,6 +28,6 @@
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 {"type":"assistant/chunk","seq":119,"time":1784045704754,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":107,"outputTokens":23,"cacheReadTokens":3968,"reasoningTokens":20}}}}
 {"type":"assistant/chunk","seq":120,"time":1784045704754,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":121,"time":1784821264917,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file was created successfully. The user asked me to reply with exactly the single word DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"67651fed-b0e9-4f68-a8c3-83c348aaf24f"},"usage":{"inputTokens":107,"outputTokens":23,"cacheReadTokens":3968,"reasoningTokens":20}},"sourceEventSeqs":[93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120],"surfaceOp":"append"}
+{"type":"assistant/message","seq":121,"time":1784821264917,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file was created successfully. The user asked me to reply with exactly the single word DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"67651fed-b0e9-4f68-a8c3-83c348aaf24f"},"usage":{"inputTokens":107,"outputTokens":23,"cacheReadTokens":3968,"reasoningTokens":20}},"sourceEventSeqs":[93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120],"surfaceOp":"append"}
 {"type":"step/end","seq":122,"time":1784821264922,"data":{"turn":1,"step":2}}
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diff --git a/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl b/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
index d934a2d7be..7ff933ab4b 100644
--- a/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783611702550,"data":{"content":[{"type":"text","text":"Do NOT use the read tool and do NOT use bash or shell commands. Immediately use the edit tool to replace the literal text blue with green in settings.txt in the current directory. Do not read the file first. After the tool result, reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"c367f2cd-f9b5-44a4-a363-fdb97d469ad2"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783611702550,"data":{"title":"Do NOT use the read","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783611702550,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783611702551,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783611702551,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":77,"time":1783611703972,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the edit tool to replace \"blue\" with \"green\" in settings.txt without reading the file first, and then reply with just \"DONE\"."},{"type":"tool-call","id":"call_00_x0zlnXl5JOxLrAYL9y7P0119","name":"edit","arguments":"{\"file_path\": \"settings.txt\", \"old_string\": \"blue\", \"new_string\": \"green\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"db6924d3-7ca0-4a50-9bec-9f976b1f493d"},"usage":{"inputTokens":3132,"outputTokens":115,"cacheReadTokens":0,"reasoningTokens":36}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76],"surfaceOp":"append"}
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 {"type":"tool/result","seq":79,"time":1783611703978,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_x0zlnXl5JOxLrAYL9y7P0119"},"content":[{"type":"tool-result","toolCallId":"call_00_x0zlnXl5JOxLrAYL9y7P0119","content":[{"type":"text","text":"Error: edit requires reading \"{{cwd}}/settings.txt\" first"}],"isError":true}],"role":"user","id":"787330b6-f223-41d6-831e-ce2b14d0e820"},"error":{"name":"FsError","code":"FS_NOT_OBSERVED"}},"sourceEventSeqs":[78],"surfaceOp":"append"}
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@@ -25,7 +25,7 @@
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+{"type":"assistant/message","seq":144,"time":1783611705573,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The edit tool requires reading the file first. The user said \"Do not read the file first\" but the tool's own constraints require reading. I need to follow the tool requirements. Let me read the file first."},{"type":"tool-call","id":"call_00_tfr0gdIclW92oIEgi7NF0891","name":"read","arguments":"{\"file_path\": \"settings.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"de588e3c-b10c-4eee-93a5-26e9a665dcbc"},"usage":{"inputTokens":235,"outputTokens":89,"cacheReadTokens":3072,"reasoningTokens":44}},"sourceEventSeqs":[82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143],"surfaceOp":"append"}
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 {"type":"tool/result","seq":146,"time":1783611705579,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_00_tfr0gdIclW92oIEgi7NF0891"},"content":[{"type":"tool-result","toolCallId":"call_00_tfr0gdIclW92oIEgi7NF0891","content":[{"type":"text","text":"<path>{{cwd}}/settings.txt</path>\n<type>file</type>\n<content>\n1: color: blue\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"fade9382-14c7-47e3-8da4-286008d7e9b8"}},"sourceEventSeqs":[145],"surfaceOp":"append"}
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@@ -38,7 +38,7 @@
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+{"type":"assistant/message","seq":225,"time":1783611707097,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file contains \"color: blue\". I need to replace \"blue\" with \"green\". The edit tool said it requires reading first — now I've read it, so the edit should work."},{"type":"tool-call","id":"call_00_GVknJu2tksKkP4lALCwh0926","name":"edit","arguments":"{\"file_path\": \"settings.txt\", \"old_string\": \"blue\", \"new_string\": \"green\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"0e331a4c-4e8d-4daf-a909-80d78a03bdf7"},"usage":{"inputTokens":281,"outputTokens":119,"cacheReadTokens":3200,"reasoningTokens":40}},"sourceEventSeqs":[149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224],"surfaceOp":"append"}
 {"type":"tool/call","seq":226,"time":1783611707097,"data":{"turn":1,"step":3,"callId":"call_00_GVknJu2tksKkP4lALCwh0926","name":"edit","arguments":"{\"file_path\": \"settings.txt\", \"old_string\": \"blue\", \"new_string\": \"green\"}"}}
 {"type":"tool/result","seq":227,"time":1783611707114,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_00_GVknJu2tksKkP4lALCwh0926"},"content":[{"type":"tool-result","toolCallId":"call_00_GVknJu2tksKkP4lALCwh0926","content":[{"type":"text","text":"The file {{cwd}}/settings.txt has been updated successfully."}],"isError":false}],"role":"user","id":"e431a509-587b-49fa-8c84-7a6c92e2a014"},"meta":{"diffs":[{"path":"settings.txt","oldText":"color: blue","newText":"color: green"}]}},"sourceEventSeqs":[226],"surfaceOp":"append"}
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@@ -52,6 +52,6 @@
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-{"type":"assistant/message","seq":255,"time":1783611707953,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The replacement was successful. I'll reply with just \"DONE\" as instructed."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"00d3a148-8261-4513-b509-10337133545d"},"usage":{"inputTokens":202,"outputTokens":20,"cacheReadTokens":3456,"reasoningTokens":17}},"sourceEventSeqs":[230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254],"surfaceOp":"append"}
+{"type":"assistant/message","seq":255,"time":1783611707953,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The replacement was successful. I'll reply with just \"DONE\" as instructed."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"00d3a148-8261-4513-b509-10337133545d"},"usage":{"inputTokens":202,"outputTokens":20,"cacheReadTokens":3456,"reasoningTokens":17}},"sourceEventSeqs":[230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl b/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl
index 72cb3a5200..58cb8c5f34 100644
--- a/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352099839,"data":{"content":[{"type":"text","text":"Use the read tool (NOT bash) with offset 5 and limit 4 to read lines 5 through 8 of big.txt in the current directory. Then reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"80cf70ac-0b37-401a-96d2-c54056300cd4"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352099839,"data":{"title":"Use the read tool (NOT","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":1783352099841,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352099841,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":91,"time":1783352101348,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the read tool with offset 5 and limit 4 to read lines 5 through 8 of big.txt in the current directory. Then reply with exactly the single word DONE.\n\nLet me first check the current directory, then read the file."},{"type":"tool-call","id":"call_00_GIZwZS9a7vhWTFCIc7Z35497","name":"read","arguments":"{\"file_path\": \"big.txt\", \"offset\": 5, \"limit\": 4}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5620412c-8fae-4d17-aac4-0801f3b02461"},"usage":{"inputTokens":2894,"outputTokens":133,"cacheReadTokens":0,"reasoningTokens":56}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],"surfaceOp":"append"}
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@@ -26,6 +26,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/fs-read/session.jsonl b/examples/acp-agent/tests/snapshots/fs-read/session.jsonl
index 82adec999d..70c0f679bd 100644
--- a/examples/acp-agent/tests/snapshots/fs-read/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-read/session.jsonl
@@ -3,7 +3,7 @@
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-{"type":"request/header","seq":4,"time":1783352072471,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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diff --git a/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl b/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl
index e46bcfa17c..e836616e19 100644
--- a/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl
@@ -3,7 +3,7 @@
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diff --git a/examples/acp-agent/tests/snapshots/fs-write/session.jsonl b/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
index 8d58e22ecc..f90f803470 100644
--- a/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
@@ -3,7 +3,7 @@
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@@ -26,6 +26,6 @@
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-{"type":"assistant/message","seq":92,"time":1783352081057,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file has been created. Now I just need to reply with \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1ac9cade-f783-4a8c-957a-1e4575fe6a34"},"usage":{"inputTokens":214,"outputTokens":20,"cacheReadTokens":2816,"reasoningTokens":17}},"sourceEventSeqs":[67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91],"surfaceOp":"append"}
+{"type":"assistant/message","seq":92,"time":1783352081057,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file has been created. Now I just need to reply with \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1ac9cade-f783-4a8c-957a-1e4575fe6a34"},"usage":{"inputTokens":214,"outputTokens":20,"cacheReadTokens":2816,"reasoningTokens":17}},"sourceEventSeqs":[67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl
index 32b1461b7c..7e6cc1b618 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783600629541,"data":{"content":[{"type":"text","text":"Reply with exactly the word: PONG. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"5a36df87-da8e-480d-8e0f-61cd2b93bbb8"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -13,6 +13,6 @@
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-{"type":"assistant/message","seq":33,"time":1783600631011,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"PONG\" and not use any tools."},{"type":"text","text":"PONG"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"7452a358-8038-4583-9ceb-66564f665bfb"},"usage":{"inputTokens":3091,"outputTokens":23,"cacheReadTokens":0,"reasoningTokens":20}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
+{"type":"assistant/message","seq":33,"time":1783600631011,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"PONG\" and not use any tools."},{"type":"text","text":"PONG"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"7452a358-8038-4583-9ceb-66564f665bfb"},"usage":{"inputTokens":3091,"outputTokens":23,"cacheReadTokens":0,"reasoningTokens":20}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
index a43c898146..8c64ec0d09 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
@@ -3,7 +3,7 @@
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-{"type":"request/header","seq":4,"time":1783962504152,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783962504152,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -27,7 +27,7 @@
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@@ -42,6 +42,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
index 8bcd0df48f..e94f687ecc 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
@@ -3,7 +3,7 @@
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-{"type":"request/header","seq":4,"time":1783352196664,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352196664,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -28,6 +28,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
index 5e3bdb0217..acd88bdec1 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352171520,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo HELLO. Report the tool result you got back verbatim, then stop."}],"source":{"kind":"user"},"role":"user","id":"40085b3d-6b87-4b86-859e-b34786c9a12f"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352171520,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352171527,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352171528,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352171528,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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-{"type":"assistant/message","seq":53,"time":1783352172557,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and report the result verbatim."},{"type":"tool-call","id":"call_00_6k0oGSliVHxGSgqBmMEO4311","name":"bash","arguments":"{\"command\": \"echo HELLO\", \"description\": \"Echo HELLO\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"abc2e6c1-7e03-4ed6-ab85-220ab541ba23"},"usage":{"inputTokens":2878,"outputTokens":83,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52],"surfaceOp":"append"}
+{"type":"assistant/message","seq":53,"time":1783352172557,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and report the result verbatim."},{"type":"tool-call","id":"call_00_6k0oGSliVHxGSgqBmMEO4311","name":"bash","arguments":"{\"command\": \"echo HELLO\", \"description\": \"Echo HELLO\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"abc2e6c1-7e03-4ed6-ab85-220ab541ba23"},"usage":{"inputTokens":2878,"outputTokens":83,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52],"surfaceOp":"append"}
 {"type":"tool/call","seq":54,"time":1783352172557,"data":{"turn":1,"step":1,"callId":"call_00_6k0oGSliVHxGSgqBmMEO4311","name":"bash","arguments":"{\"command\": \"echo HELLO\", \"description\": \"Echo HELLO\"}"}}
 {"type":"hook/invoked","seq":55,"time":1783352172558,"data":{"turn":1,"point":"PreToolUse","dialect":"claude","handlerId":"claude:PreToolUse:1","matcher":"bash"}}
 {"type":"hook/result","seq":56,"time":1783352172573,"data":{"turn":1,"point":"PreToolUse","handlerId":"claude:PreToolUse:1","decision":"ask","exitCode":0,"durationMs":14.113374999999905}}
@@ -29,6 +29,6 @@
 {"type":"assistant/chunk","seq":109,"time":1783352173964,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"The tool result I got back verbatim is:\n\n```\nError: bash requires manual approval in this session\n```"}}}}
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-{"type":"assistant/message","seq":112,"time":1783962235816,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The bash tool returned an error saying it requires manual approval in this session. I'll report this verbatim."},{"type":"text","text":"The tool result I got back verbatim is:\n\n```\nError: bash requires manual approval in this session\n```"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"14b10835-90b8-4087-b47f-8c2ac7d185fb"},"usage":{"inputTokens":166,"outputTokens":45,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111],"surfaceOp":"append"}
+{"type":"assistant/message","seq":112,"time":1783962235816,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The bash tool returned an error saying it requires manual approval in this session. I'll report this verbatim."},{"type":"text","text":"The tool result I got back verbatim is:\n\n```\nError: bash requires manual approval in this session\n```"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"14b10835-90b8-4087-b47f-8c2ac7d185fb"},"usage":{"inputTokens":166,"outputTokens":45,"cacheReadTokens":2816,"reasoningTokens":22}},"sourceEventSeqs":[62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
index b956a3f054..524da9bdaa 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352165196,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo HELLO. Report the tool result you got back verbatim, then stop."}],"source":{"kind":"user"},"role":"user","id":"57df50c1-78e1-4b8a-857a-c2ae2192dadd"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1783352165199,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352165199,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":53,"time":1783352166514,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and report the result verbatim."},{"type":"tool-call","id":"call_00_JliP571Bh0QQ8QExbSPk0080","name":"bash","arguments":"{\"command\": \"echo HELLO\", \"description\": \"Run echo HELLO\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1f20246c-1d36-429b-af1d-7c2de41100aa"},"usage":{"inputTokens":2878,"outputTokens":83,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52],"surfaceOp":"append"}
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 {"type":"hook/result","seq":56,"time":1783352166528,"data":{"turn":1,"point":"PreToolUse","handlerId":"claude:PreToolUse:1","decision":"block","exitCode":2,"stderrSummary":"bash is disabled by policy in this session","durationMs":12.367074000000684}}
@@ -27,6 +27,6 @@
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-{"type":"assistant/message","seq":117,"time":1783352167934,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The bash tool is disabled by policy. I need to report this error verbatim back to the user."},{"type":"text","text":"The tool returned:\n\n> Error: bash is disabled by policy in this session\n\nI cannot run the command because the bash tool is disabled by policy."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"87f1da3e-3399-497a-bc2f-90951aed293b"},"usage":{"inputTokens":167,"outputTokens":52,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116],"surfaceOp":"append"}
+{"type":"assistant/message","seq":117,"time":1783352167934,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The bash tool is disabled by policy. I need to report this error verbatim back to the user."},{"type":"text","text":"The tool returned:\n\n> Error: bash is disabled by policy in this session\n\nI cannot run the command because the bash tool is disabled by policy."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"87f1da3e-3399-497a-bc2f-90951aed293b"},"usage":{"inputTokens":167,"outputTokens":52,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/session.jsonl
index 0aeb20331c..9248936147 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/session.jsonl
@@ -4,7 +4,7 @@
 {"type":"user/message","seq":2,"time":1785122243327,"data":{"content":[{"type":"text","text":"The user has previously stated their favorite color is teal."}],"source":{"kind":"plugin","plugin":"hooks-claude"},"role":"user","id":"7b887c49-97bd-46f9-aea4-c462d385a8ee"},"surfaceOp":"append"}
 {"type":"session/title","seq":3,"time":1785122243327,"data":{"title":"What is my favorite color?","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":5,"time":1785122243354,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":5,"time":1785122243354,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":6,"time":1785122243359,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":26,"time":1783352161477,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -14,6 +14,6 @@
 {"type":"assistant/chunk","seq":30,"time":1783352161478,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"teal"}}}}
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-{"type":"assistant/message","seq":33,"time":1785122243360,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user's favorite color is teal, as stated in the context provided by the plugin."},{"type":"text","text":"teal"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5164797b-7d33-434c-8ab0-61fe7e76e9ab"},"usage":{"inputTokens":2892,"outputTokens":22,"cacheReadTokens":0,"reasoningTokens":19}},"sourceEventSeqs":[6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
+{"type":"assistant/message","seq":33,"time":1785122243360,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user's favorite color is teal, as stated in the context provided by the plugin."},{"type":"text","text":"teal"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5164797b-7d33-434c-8ab0-61fe7e76e9ab"},"usage":{"inputTokens":2892,"outputTokens":22,"cacheReadTokens":0,"reasoningTokens":19}},"sourceEventSeqs":[6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-stop-continue/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-stop-continue/session.jsonl
index 51068cd22e..a208441738 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-stop-continue/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-stop-continue/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784522140647,"data":{"content":[{"type":"text","text":"Reply with the single word FIRST and stop."}],"source":{"kind":"user"},"role":"user","id":"c63da2f2-916d-42cc-8e6f-c9520e1641cd"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784522140647,"data":{"title":"Reply with the single word","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":1784522140648,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -13,7 +13,7 @@
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+{"type":"assistant/message","seq":30,"time":1784522142947,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with just the word \"FIRST\" and stop."},{"type":"text","text":"FIRST"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"7995eaff-e076-4686-bc21-a97e9921baa4"},"usage":{"inputTokens":3545,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29],"surfaceOp":"append"}
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@@ -28,7 +28,7 @@
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 {"type":"step/end","seq":63,"time":1784522144142,"data":{"turn":1,"step":2}}
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-invalid-matcher/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-invalid-matcher/session.jsonl
index f4374b94a3..b10a9fa072 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-invalid-matcher/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-invalid-matcher/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783600629541,"data":{"content":[{"type":"text","text":"Reply with exactly the word: PONG. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"56715824-b0da-4a73-8d6c-0caa590995e6"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -13,6 +13,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl
index 67f277d2cd..312879b530 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783986962235,"data":{"content":[{"type":"text","text":"Call the bash tool exactly once to run: echo HELLO. Whatever tool result comes back, quote it verbatim and stop without calling another tool."}],"source":{"kind":"user"},"role":"user","id":"5a3821d5-de5b-4b9c-85b7-d53dca51af5c"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1783986962240,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783986962240,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -27,6 +27,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
index b1d297049d..2fc630b5c0 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
@@ -3,7 +3,7 @@
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-{"type":"request/header","seq":4,"time":1783352228443,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -28,6 +28,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
index 97e59bbe8f..bf6972025c 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352214605,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo HELLO. Report the tool result you got back verbatim, then stop."}],"source":{"kind":"user"},"role":"user","id":"8aab0b74-e7e0-4c3c-90a3-19a81f2b9c6a"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352214605,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352214607,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352214608,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352214608,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":53,"time":1783352215804,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a simple bash command and report the result verbatim."},{"type":"tool-call","id":"call_00_tv0SMeLXaTuyuVrOxnV97085","name":"bash","arguments":"{\"command\": \"echo HELLO\", \"description\": \"Run echo HELLO\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"0a44f659-68b9-402b-aecf-a7dd85a80550"},"usage":{"inputTokens":2880,"outputTokens":83,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52],"surfaceOp":"append"}
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@@ -27,6 +27,6 @@
 {"type":"assistant/chunk","seq":111,"time":1783352217214,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"The tool result I got back verbatim is:\n\n```\nError: bash is disabled by codex policy in this session\n```"}}}}
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+{"type":"assistant/message","seq":114,"time":1783352217214,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The bash tool is disabled by policy in this session. I need to report this result verbatim to the user."},{"type":"text","text":"The tool result I got back verbatim is:\n\n```\nError: bash is disabled by codex policy in this session\n```"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"35ae08e3-e3e1-42a4-9239-0e84e025ab52"},"usage":{"inputTokens":171,"outputTokens":49,"cacheReadTokens":2816,"reasoningTokens":23}},"sourceEventSeqs":[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
index 5ffc12a991..20c12e2b0f 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
@@ -4,7 +4,7 @@
 {"type":"user/message","seq":2,"time":1785122250006,"data":{"content":[{"type":"text","text":"The user has previously stated their favorite color is teal."}],"source":{"kind":"plugin","plugin":"hooks-codex"},"role":"user","id":"174d8732-a32f-4eb0-8471-d8b3291a34f2"},"surfaceOp":"append"}
 {"type":"session/title","seq":3,"time":1785122250006,"data":{"title":"What is my favorite color?","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":5,"time":1785122250036,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":5,"time":1785122250036,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -14,6 +14,6 @@
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-{"type":"assistant/message","seq":52,"time":1785122250042,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked about their favorite color, and the context tells me they previously stated it's teal. They asked me to reply with just the color and stop, without using any tools."},{"type":"text","text":"teal"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"6999bef9-cec4-4d20-9dbe-6cedfdeba5ae"},"usage":{"inputTokens":2891,"outputTokens":41,"cacheReadTokens":0,"reasoningTokens":38}},"sourceEventSeqs":[6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51],"surfaceOp":"append"}
+{"type":"assistant/message","seq":52,"time":1785122250042,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked about their favorite color, and the context tells me they previously stated it's teal. They asked me to reply with just the color and stop, without using any tools."},{"type":"text","text":"teal"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"6999bef9-cec4-4d20-9dbe-6cedfdeba5ae"},"usage":{"inputTokens":2891,"outputTokens":41,"cacheReadTokens":0,"reasoningTokens":38}},"sourceEventSeqs":[6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl
index 18d6740b2b..e164e5a984 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1784522152397,"data":{"content":[{"type":"text","text":"Reply with the single word FIRST and stop."}],"source":{"kind":"user"},"role":"user","id":"c76f1de4-cf89-4f0f-a861-bc699f579f78"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784522152397,"data":{"title":"Reply with the single word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784522152399,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784522152399,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784522152399,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -13,7 +13,7 @@
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-{"type":"assistant/message","seq":30,"time":1784522153790,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with the single word \"FIRST\" and stop."},{"type":"text","text":"FIRST"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"68f086af-23d4-4e26-a64b-18650a13db75"},"usage":{"inputTokens":3545,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29],"surfaceOp":"append"}
+{"type":"assistant/message","seq":30,"time":1784522153790,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with the single word \"FIRST\" and stop."},{"type":"text","text":"FIRST"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"68f086af-23d4-4e26-a64b-18650a13db75"},"usage":{"inputTokens":3545,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29],"surfaceOp":"append"}
 {"type":"step/end","seq":31,"time":1784522153790,"data":{"turn":1,"step":1}}
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 {"type":"hook/result","seq":33,"time":1784522153806,"data":{"turn":1,"point":"Stop","handlerId":"codex:Stop:1","decision":"block","exitCode":2,"stderrSummary":"Also reply with the single word SECOND, then stop.","durationMs":14.605791999999838}}
@@ -28,7 +28,7 @@
 {"type":"assistant/chunk","seq":59,"time":1784522154980,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"SECOND"}}}}
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-{"type":"assistant/message","seq":62,"time":1784522154981,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with the single word \"SECOND\" and then stop."},{"type":"text","text":"SECOND"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1db0be0d-d2ea-477f-bf3a-c2a757675795"},"usage":{"inputTokens":106,"outputTokens":21,"cacheReadTokens":3456,"reasoningTokens":18}},"sourceEventSeqs":[36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61],"surfaceOp":"append"}
+{"type":"assistant/message","seq":62,"time":1784522154981,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with the single word \"SECOND\" and then stop."},{"type":"text","text":"SECOND"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1db0be0d-d2ea-477f-bf3a-c2a757675795"},"usage":{"inputTokens":106,"outputTokens":21,"cacheReadTokens":3456,"reasoningTokens":18}},"sourceEventSeqs":[36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61],"surfaceOp":"append"}
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 {"type":"hook/invoked","seq":64,"time":1784522154982,"data":{"turn":1,"point":"Stop","dialect":"codex","handlerId":"codex:Stop:2"}}
 {"type":"hook/result","seq":65,"time":1784522154990,"data":{"turn":1,"point":"Stop","handlerId":"codex:Stop:2","decision":"pass","exitCode":0,"durationMs":7.6766670000001795}}
diff --git a/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl b/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
index 24c678f292..d33ff70a75 100644
--- a/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the lsp tool exactly once to find the definition at subject.ts line 1 character 7, then reply with exactly DONE."}],"source":{"kind":"user"},"role":"user","id":"4133e3ae-3f16-4e96-b6dc-5b194fcd9a50"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Use the lsp tool exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-pro"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-pro"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -19,6 +19,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl b/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
index 2cc17bdcb1..d46a07010a 100644
--- a/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
@@ -3,7 +3,7 @@
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@@ -12,7 +12,7 @@
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@@ -27,6 +27,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/packed-chunks/session.jsonl b/examples/acp-agent/tests/snapshots/packed-chunks/session.jsonl
index 76f43e17c4..c979cf5f5f 100644
--- a/examples/acp-agent/tests/snapshots/packed-chunks/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/packed-chunks/session.jsonl
@@ -3,7 +3,7 @@
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@@ -12,7 +12,7 @@
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@@ -27,6 +27,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/parallel-tool-calls/session.jsonl b/examples/acp-agent/tests/snapshots/parallel-tool-calls/session.jsonl
index 9df7e1485d..d4cca7a82c 100644
--- a/examples/acp-agent/tests/snapshots/parallel-tool-calls/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/parallel-tool-calls/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the read tool twice in the same assistant message: read a.txt and b.txt. Then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"b4f8388c-8494-409b-8230-c98e14e0899b"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -24,6 +24,6 @@
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diff --git a/examples/acp-agent/tests/snapshots/pty-tools/session.jsonl b/examples/acp-agent/tests/snapshots/pty-tools/session.jsonl
index a0ebe7a13d..eca9659b8a 100644
--- a/examples/acp-agent/tests/snapshots/pty-tools/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/pty-tools/session.jsonl
@@ -3,13 +3,13 @@
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@@ -19,7 +19,7 @@
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@@ -29,7 +29,7 @@
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@@ -39,7 +39,7 @@
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@@ -49,7 +49,7 @@
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@@ -59,7 +59,7 @@
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diff --git a/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl b/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
index 8c3644959c..b763c20125 100644
--- a/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
@@ -3,13 +3,13 @@
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@@ -43,7 +43,7 @@
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+{"type":"assistant/message","seq":44,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_4","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4dd60e54-97a4-4c1e-8393-22df12c25aeb"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[39,40,41,42,43],"surfaceOp":"append"}
 {"type":"tool/call","seq":45,"time":0,"data":{"turn":1,"step":4,"callId":"call_4","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}}
 {"type":"todo/write","seq":46,"time":0,"data":{"todos":[{"content":"watch the kettle boil","status":"in_progress"}]}}
 {"type":"tool/result","seq":47,"time":0,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"call_4"},"content":[{"type":"tool-result","toolCallId":"call_4","content":[{"type":"text","text":"Updated todo list: 0 pending, 1 in progress, 0 completed."}],"isError":false}],"role":"user","id":"dd10ec82-7e9b-449a-a9ef-ca74370e916a"}},"sourceEventSeqs":[45],"surfaceOp":"append"}
@@ -54,7 +54,7 @@
 {"type":"assistant/chunk","seq":52,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_5","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}}}}
 {"type":"assistant/chunk","seq":53,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
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-{"type":"assistant/message","seq":55,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_5","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"75b290cb-6f59-44da-9fe5-89500aabaf2d"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[50,51,52,53,54],"surfaceOp":"append"}
+{"type":"assistant/message","seq":55,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_5","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"75b290cb-6f59-44da-9fe5-89500aabaf2d"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[50,51,52,53,54],"surfaceOp":"append"}
 {"type":"tool/call","seq":56,"time":0,"data":{"turn":1,"step":5,"callId":"call_5","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"watch the kettle boil\", \"status\": \"in_progress\"}]}"}}
 {"type":"todo/write","seq":57,"time":0,"data":{"todos":[{"content":"watch the kettle boil","status":"in_progress"}]}}
 {"type":"tool/result","seq":58,"time":0,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"call_5"},"content":[{"type":"tool-result","toolCallId":"call_5","content":[{"type":"text","text":"Updated todo list: 0 pending, 1 in progress, 0 completed."}],"isError":false}],"role":"user","id":"b6e81ed4-dc8a-4765-8472-736f11d1a348"}},"sourceEventSeqs":[56],"surfaceOp":"append"}
@@ -66,6 +66,6 @@
 {"type":"assistant/chunk","seq":64,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE."}}}}
 {"type":"assistant/chunk","seq":65,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":66,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":67,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"DONE."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"6227a472-42a4-40b8-b6dc-703e7c03dbaf"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[62,63,64,65,66],"surfaceOp":"append"}
+{"type":"assistant/message","seq":67,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"DONE."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"6227a472-42a4-40b8-b6dc-703e7c03dbaf"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[62,63,64,65,66],"surfaceOp":"append"}
 {"type":"step/end","seq":68,"time":0,"data":{"turn":1,"step":6}}
 {"type":"turn/end","seq":69,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl b/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
index c4dea917f0..653fa9416f 100644
--- a/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
@@ -3,15 +3,15 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Read request event 4 with session_event_read, verify the complete spill was retained, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"4cca69f9-35bf-4a89-ad5e-c36296496f75"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Read request event 4 with","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_query_spill","name":"session_event_read","argumentsDelta":"{\"seq\":4}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3b3615ef-d5fc-483e-b8fb-9724da1c90a1"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3b3615ef-d5fc-483e-b8fb-9724da1c90a1"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}}
-{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_session_query_spill","content":[{"type":"text","text":"Session {{sessionId}} — Read request event 4 with\nTarget event seq 4:\n```json\n{\n  \"type\": \"request/header\",\n  \"seq\": 4,\n  \"time\": 1785210459868,\n  \"data\": {\n    \"header\": {\n      \"config\": {\n        \"provider\": \"deepseek\",\n        \"model\": \"deepseek-v4-flash\"\n      },\n rmissions: one sentence for the user explaining why this exact file operation needs the wider access.\"\n              }\n            },\n            \"required\": [\n              \"file_path\",\n              \"content\"\n            ]\n          }\n        }\n      ]\n    },\n    \"reason\": \"initial\"\n  }\n}\n```\n\n(Omitted 36007 bytes. Full formatted result stored at: /tmp/dsh-acp-snap-035d1d054/session-0a508d3a5c8b/adedf3ca051a-session_event_read.txt. Use read with offset/limit, or grep this path to search within it.)"}],"isError":false}],"role":"user","id":"2e691143-73e8-47fd-b9bd-d5296317af66"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
+{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_session_query_spill","content":[{"type":"text","text":"Session {{sessionId}} — Read request event 4 with\nTarget event seq 4:\n```json\n{\n  \"type\": \"request/header\",\n  \"seq\": 4,\n  \"time\": 1785313195724,\n  \"data\": {\n    \"header\": {\n      \"config\": {\n        \"provider\": \"deepseek-official\",\n        \"model\": \"deepseek-v4-flash\"\n rmissions: one sentence for the user explaining why this exact file operation needs the wider access.\"\n              }\n            },\n            \"required\": [\n              \"file_path\",\n              \"content\"\n            ]\n          }\n        }\n      ]\n    },\n    \"reason\": \"initial\"\n  }\n}\n```\n\n(Omitted 36016 bytes. Full formatted result stored at: /tmp/dsh-acp-snap-035d1d054/session-0a508d3a5c8b/adedf3ca051a-session_event_read.txt. Use read with offset/limit, or grep this path to search within it.)"}],"isError":false}],"role":"user","id":"2e691143-73e8-47fd-b9bd-d5296317af66"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
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 {"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
@@ -19,7 +19,7 @@
 {"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}}}
 {"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"87fe621f-c41d-483c-86b5-7c7615d801b4"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"87fe621f-c41d-483c-86b5-7c7615d801b4"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}
 {"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_verify_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_verify_session_query_spill","content":[{"type":"text","text":"SPILL_CANONICAL_OK\n"}],"isError":false}],"role":"user","id":"7f062b79-f9fc-415c-b84d-79a7af155391"}},"sourceEventSeqs":[21],"surfaceOp":"append"}
 {"type":"step/end","seq":23,"time":0,"data":{"turn":1,"step":2}}
@@ -29,6 +29,6 @@
 {"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c9c59547-8b07-44c5-ba75-54d7b03b13fb"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
+{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c9c59547-8b07-44c5-ba75-54d7b03b13fb"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
 {"type":"step/end","seq":31,"time":0,"data":{"turn":1,"step":3}}
 {"type":"turn/end","seq":32,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl b/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
index 9dd6516b91..9da57be604 100644
--- a/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1784821266392,"data":{"content":[{"type":"text","text":"Use the write tool (NOT bash) to create session-root.txt in the current directory containing exactly: session root. Then reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"b53fe9ec-e73f-4ee8-8774-94aaf9de5c6e"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784821266392,"data":{"title":"Use the write tool (NOT","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784821266397,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784821266398,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784821266398,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_root","name":"write","argumentsDelta":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":1784567324143,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1784821266419,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"4b578002-af83-438b-be8c-8bac282a44e9"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1784821266419,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4b578002-af83-438b-be8c-8bac282a44e9"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1784821266419,"data":{"turn":1,"step":1,"callId":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}
 {"type":"tool/result","seq":12,"time":1784821266431,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_root"},"content":[{"type":"tool-result","toolCallId":"call_session_root","content":[{"type":"text","text":"<path>/Users/cty/acp-snap-cwd-MABAjO/session-root.txt</path>\n<type>file</type>\n<content>\nCreated file\n</content>"}],"isError":false}],"role":"user","id":"016d137a-90f2-4168-9d07-429814d0bac4"},"meta":{"diffs":[]}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1784821266436,"data":{"turn":1,"step":1}}
@@ -19,6 +19,6 @@
 {"type":"assistant/chunk","seq":17,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":18,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":19,"time":1784567324157,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":1784821266442,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"fffac6af-a016-4db6-b11e-9d8a41034262"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1784821266442,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fffac6af-a016-4db6-b11e-9d8a41034262"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"step/end","seq":21,"time":1784821266446,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":22,"time":1784821266446,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl b/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
index 4c2edbcf5d..ca0491650f 100644
--- a/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
@@ -3,14 +3,14 @@
 {"type":"user/message","seq":1,"time":1785222848166,"data":{"content":[{"type":"text","text":"Reply with exactly TITLE_DONE. Do not use tools."}],"source":{"kind":"user"},"role":"user","id":"00000000-0000-4000-8000-000000000001"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785222848166,"data":{"title":"Reply with exactly TITLE_DONE. Do","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785222848199,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785222848199,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785222848199,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"session/title-llm-request","seq":5,"time":1785222848201,"data":{"titleProvider":"session-title-first-message-llm","messageSeqs":[1],"route":{"provider":"title-replay","model":"title-model"},"system":"Create a concise title for an AI coding-assistant session from the supplied human messages.\nReturn only the title on one line, **in plain text of natural language**, with no quotes, prefix, explanation, Markdown, XML, or terminal control codes. No code is allowed.\nUse the language of the messages.\nAim for about 5 words in non-CJK languages or 10 CJK characters.","messages":[{"content":[{"type":"text","text":"Generate the session title from this JSON array of human messages:\n[{\"seq\":1,\"text\":\"Reply with exactly TITLE_DONE. Do not use tools.\"}]"}],"source":{"kind":"plugin","plugin":"dsh-session-title-llm"},"role":"user","id":"00000000-0000-4000-8000-000000000002"}],"maxTokens":32}}
 {"type":"assistant/chunk","seq":6,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":7,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"TITLE_DONE"}}}
 {"type":"assistant/chunk","seq":8,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"TITLE_DONE"}}}}
 {"type":"assistant/chunk","seq":9,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":10,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":11,"time":1785222848208,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"TITLE_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"00000000-0000-4000-8000-000000000003"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
+{"type":"assistant/message","seq":11,"time":1785222848208,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"TITLE_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"00000000-0000-4000-8000-000000000003"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
 {"type":"step/end","seq":12,"time":1785222848209,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":13,"time":1785222848209,"data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"session/title","seq":14,"time":1785222848209,"data":{"title":"Late durable session title","messageSeqs":[1],"source":{"kind":"provider","provider":"session-title-first-message-llm","model":{"provider":"title-replay","model":"title-model"}}}}
diff --git a/examples/acp-agent/tests/snapshots/skill-load/session.jsonl b/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
index 6fc71b0dd0..216b9c2f65 100644
--- a/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
@@ -4,7 +4,7 @@
 {"type":"session/title","seq":2,"time":1783654655603,"data":{"title":"Load the snapshot-skill skill with","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"user/message","seq":3,"time":1784903324926,"data":{"content":[{"type":"text","text":"<system-reminder>\nA skill is a reusable set of task-specific instructions. The following skills are available in this session:\n\n<available_skills>\n- `model-only-skill`: Prove user-disabled skills remain available to the model.\n- `snapshot-skill`: Exercise project skill discovery and loading in snapshot tests.\n</available_skills>\n\nIf the user names a skill, or the task clearly matches a skill's description, call the `skill` tool with the exact skill name before taking task actions. Load all applicable skills, then follow their full instructions. This catalog contains summaries only; do not infer or follow a skill's instructions until it has been loaded.\n</system-reminder>"}],"source":{"kind":"plugin","plugin":"dsh-tool-skill"},"role":"user","id":"4f537803-7424-41eb-887f-f39676b89187"},"surfaceOp":"append"}
 {"type":"step/start","seq":4,"time":1784903324927,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":5,"time":1784903324928,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":5,"time":1784903324928,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":6,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"assistant/chunk","seq":7,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"Load the requested skill."}}}
 {"type":"assistant/chunk","seq":8,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -13,7 +13,7 @@
 {"type":"assistant/chunk","seq":11,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_skill_load","name":"skill","arguments":"{\"name\":\"snapshot-skill\"}"}}}}
 {"type":"assistant/chunk","seq":12,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":100,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":5}}}}
 {"type":"assistant/chunk","seq":13,"time":1784903324935,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":14,"time":1784903324935,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Load the requested skill."},{"type":"tool-call","id":"call_skill_load","name":"skill","arguments":"{\"name\":\"snapshot-skill\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"cc7d430d-d011-4428-8572-0274c6082277"},"usage":{"inputTokens":100,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":5}},"sourceEventSeqs":[6,7,8,9,10,11,12,13],"surfaceOp":"append"}
+{"type":"assistant/message","seq":14,"time":1784903324935,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Load the requested skill."},{"type":"tool-call","id":"call_skill_load","name":"skill","arguments":"{\"name\":\"snapshot-skill\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"cc7d430d-d011-4428-8572-0274c6082277"},"usage":{"inputTokens":100,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":5}},"sourceEventSeqs":[6,7,8,9,10,11,12,13],"surfaceOp":"append"}
 {"type":"tool/call","seq":15,"time":1784903324936,"data":{"turn":1,"step":1,"callId":"call_skill_load","name":"skill","arguments":"{\"name\":\"snapshot-skill\"}"}}
 {"type":"tool/result","seq":16,"time":1784903324944,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_skill_load"},"content":[{"type":"tool-result","toolCallId":"call_skill_load","content":[{"type":"text","text":"<skill_content name=\"snapshot-skill\">\n<skill_resources>\nBase directory for this skill: {{cwd}}/.dsh/skills/snapshot-skill\nResolve relative paths mentioned by this skill against the base directory before using them. Load referenced resources only as needed.\n</skill_resources>\n\n<skill_instructions>\nFollow these snapshot-only instructions.\nResolve referenced resources relative to this skill directory.\n</skill_instructions>\n</skill_content>"}],"isError":false}],"role":"user","id":"57ec1e09-b3ba-44df-8da0-bb16e7a33bd8"}},"sourceEventSeqs":[15],"surfaceOp":"append"}
 {"type":"step/end","seq":17,"time":1784903324944,"data":{"turn":1,"step":1}}
@@ -26,6 +26,6 @@
 {"type":"assistant/chunk","seq":24,"time":1783654655611,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":25,"time":1783654655611,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":180,"outputTokens":10,"cacheReadTokens":0,"reasoningTokens":4}}}}
 {"type":"assistant/chunk","seq":26,"time":1784903324956,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":27,"time":1784903324956,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The skill is loaded."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"0ef2474c-30a1-47de-896b-c108ef93357b"},"usage":{"inputTokens":180,"outputTokens":10,"cacheReadTokens":0,"reasoningTokens":4}},"sourceEventSeqs":[19,20,21,22,23,24,25,26],"surfaceOp":"append"}
+{"type":"assistant/message","seq":27,"time":1784903324956,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The skill is loaded."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"0ef2474c-30a1-47de-896b-c108ef93357b"},"usage":{"inputTokens":180,"outputTokens":10,"cacheReadTokens":0,"reasoningTokens":4}},"sourceEventSeqs":[19,20,21,22,23,24,25,26],"surfaceOp":"append"}
 {"type":"step/end","seq":28,"time":1784903324956,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":29,"time":1784903324956,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
index 9559b5b378..7de9d377db 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1784540790312,"data":{"content":[{"type":"text","text":"Call subagent once. Ask that child to attempt one further subagent call, then report the result."}],"source":{"kind":"user"},"role":"user","id":"e1664eb5-480b-4987-a0a3-4fcd85ccb04d"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784540790312,"data":{"title":"Call subagent once. Ask that","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784540790318,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784540790318,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784540790318,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_depth_one_child","name":"subagent","argumentsDelta":"{\"description\":\"Start depth two\",\"prompt\":\"Attempt one subagent call beyond the configured cap, then report the rejection.\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_depth_one_child","name":"subagent","arguments":"{\"description\":\"Start depth two\",\"prompt\":\"Attempt one subagent call beyond the configured cap, then report the rejection.\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1784540790318,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_depth_one_child","name":"subagent","arguments":"{\"description\":\"Start depth two\",\"prompt\":\"Attempt one subagent call beyond the configured cap, then report the rejection.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b1146c91-6b1d-4140-879b-4bbba9667374"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1784540790318,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_depth_one_child","name":"subagent","arguments":"{\"description\":\"Start depth two\",\"prompt\":\"Attempt one subagent call beyond the configured cap, then report the rejection.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b1146c91-6b1d-4140-879b-4bbba9667374"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1784540790319,"data":{"turn":1,"step":1,"callId":"call_depth_one_child","name":"subagent","arguments":"{\"description\":\"Start depth two\",\"prompt\":\"Attempt one subagent call beyond the configured cap, then report the rejection.\"}"}}
 {"type":"tool/result","seq":12,"time":1784540790362,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_depth_one_child"},"content":[{"type":"tool-result","toolCallId":"call_depth_one_child","content":[{"type":"text","text":"DEPTH_REJECTED"}],"isError":false}],"role":"user","id":"959a92a8-fe66-4d9b-9549-7a49676f5022"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1784540790363,"data":{"turn":1,"step":1}}
@@ -19,6 +19,6 @@
 {"type":"assistant/chunk","seq":17,"time":1784540790365,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DEPTH_ONE_DONE"}}}}
 {"type":"assistant/chunk","seq":18,"time":1784540790365,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":19,"time":1784540790365,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":1784540790365,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DEPTH_ONE_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"099e7868-3f47-4bdf-b793-c0c1d288e999"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1784540790365,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DEPTH_ONE_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"099e7868-3f47-4bdf-b793-c0c1d288e999"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"step/end","seq":21,"time":1784540790365,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":22,"time":1784540790365,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
index a9493cbac8..f5d0727edf 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1784540790319,"data":{"content":[{"type":"text","text":"Attempt one subagent call beyond the configured cap, then report the rejection."}],"source":{"kind":"user"},"role":"user","id":"9299d7d1-85e0-4e05-93e4-34d2cf6bafc8"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784540790319,"data":{"title":"Attempt one subagent call beyond","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784540790334,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784540790334,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784540790334,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_depth_three_rejected","name":"subagent","argumentsDelta":"{\"description\":\"Exceed depth cap\",\"prompt\":\"This child must never start.\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_depth_three_rejected","name":"subagent","arguments":"{\"description\":\"Exceed depth cap\",\"prompt\":\"This child must never start.\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1784540790335,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_depth_three_rejected","name":"subagent","arguments":"{\"description\":\"Exceed depth cap\",\"prompt\":\"This child must never start.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"02a9d8cf-fa71-4685-8724-0999d09a7a57"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1784540790335,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_depth_three_rejected","name":"subagent","arguments":"{\"description\":\"Exceed depth cap\",\"prompt\":\"This child must never start.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"02a9d8cf-fa71-4685-8724-0999d09a7a57"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1784540790335,"data":{"turn":1,"step":1,"callId":"call_depth_three_rejected","name":"subagent","arguments":"{\"description\":\"Exceed depth cap\",\"prompt\":\"This child must never start.\"}"}}
 {"type":"tool/result","seq":12,"time":1784540790337,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_depth_three_rejected"},"content":[{"type":"tool-result","toolCallId":"call_depth_three_rejected","content":[{"type":"text","text":"Error: subagent depth 3 exceeds maxDepth 2"}],"isError":true}],"role":"user","id":"35046088-9363-44c7-8bcb-4411ae02a2cd"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1784540790338,"data":{"turn":1,"step":1}}
@@ -19,6 +19,6 @@
 {"type":"assistant/chunk","seq":17,"time":1784540790339,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DEPTH_REJECTED"}}}}
 {"type":"assistant/chunk","seq":18,"time":1784540790339,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
 {"type":"assistant/chunk","seq":19,"time":1784540790339,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":1784540790339,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DEPTH_REJECTED"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"37e1adbe-a91e-4633-8f43-0678204a02c9"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1784540790339,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DEPTH_REJECTED"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"37e1adbe-a91e-4633-8f43-0678204a02c9"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"step/end","seq":21,"time":1784540790339,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":22,"time":1784540790339,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
index ab2d26180c..f303c3a74c 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1784540790291,"data":{"content":[{"type":"text","text":"Delegate through two child generations. The depth-two child must attempt one more subagent call and report the rejection."}],"source":{"kind":"user"},"role":"user","id":"f74eb6a3-3869-4b1c-ba3c-5b6db530ac67"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784540790291,"data":{"title":"Delegate through two child generations.","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1784540790308,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784540790308,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1784540790308,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1784540790309,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
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@@ -19,6 +19,6 @@
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 {"type":"assistant/chunk","seq":19,"time":1784540790383,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":1784540790383,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"ROOT_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"27d3e32e-ca51-443c-87ae-9c3b0dc9d5d6"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
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 {"type":"step/end","seq":21,"time":1784540790383,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":22,"time":1784540790383,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
index 9ce1073349..a5002ad8a4 100644
--- a/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352134838,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is MARMALADE. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"ecede90b-f918-4b3c-81cc-aefcc375d269"},"surfaceOp":"append"}
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 {"type":"step/start","seq":3,"time":1783352134840,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352134840,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352134840,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352135465,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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@@ -12,14 +12,14 @@
 {"type":"assistant/chunk","seq":32,"time":1783352135771,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"OK"}}}}
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 {"type":"assistant/chunk","seq":34,"time":1783352135771,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
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@@ -28,6 +28,6 @@
 {"type":"assistant/chunk","seq":84,"time":1783352138307,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"MARMALADE"}}}}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
index a0b09e9478..992d86bc57 100644
--- a/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352134838,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is MARMALADE. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"917c2f1a-be80-4f54-86e8-c94fe6859bdd"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352134838,"data":{"title":"Remember this fact for later:","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352134840,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352134840,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352134840,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352135465,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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@@ -12,7 +12,7 @@
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@@ -26,7 +26,7 @@
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 {"type":"tool/result","seq":153,"time":1783352138315,"data":{"turn":2,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_sAtKUseRzHRBvL4CF7XF1334"},"content":[{"type":"tool-result","toolCallId":"call_00_sAtKUseRzHRBvL4CF7XF1334","content":[{"type":"text","text":"MARMALADE"}],"isError":false}],"role":"user","id":"9700d34f-6f2e-4487-944b-c19f463b18d2"}},"sourceEventSeqs":[152],"surfaceOp":"append"}
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@@ -39,6 +39,6 @@
 {"type":"assistant/chunk","seq":188,"time":1783352139274,"data":{"turn":2,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"PARENT_DONE"}}}}
 {"type":"assistant/chunk","seq":189,"time":1783352139274,"data":{"turn":2,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":65,"outputTokens":30,"cacheReadTokens":3072,"reasoningTokens":25}}}}
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-{"type":"assistant/message","seq":191,"time":1783352139274,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The forked child agent correctly returned \"MARMALADE\". Now I need to reply with \"PARENT_DONE\"."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"66564990-97de-4351-9b5a-f915045d7b90"},"usage":{"inputTokens":65,"outputTokens":30,"cacheReadTokens":3072,"reasoningTokens":25}},"sourceEventSeqs":[156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190],"surfaceOp":"append"}
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 {"type":"step/end","seq":192,"time":1783352139274,"data":{"turn":2,"step":2}}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
index fe94af0f52..131dc97b0c 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352145224,"data":{"content":[{"type":"text","text":"Reply with exactly the word ALPHA and nothing else."}],"source":{"kind":"user"},"role":"user","id":"214ad816-8421-48ff-b501-ca51716d761f"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352145224,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352145224,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352145224,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352145224,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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 {"type":"assistant/chunk","seq":25,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":30,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"ALPHA"}}}}
 {"type":"assistant/chunk","seq":31,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":48,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}}}}
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-{"type":"assistant/message","seq":33,"time":1783352146130,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked me to reply with exactly the word \"ALPHA\" and nothing else."},{"type":"text","text":"ALPHA"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b5de9346-e543-41fc-bb34-7fcb9c54c249"},"usage":{"inputTokens":48,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
+{"type":"assistant/message","seq":33,"time":1783352146130,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked me to reply with exactly the word \"ALPHA\" and nothing else."},{"type":"text","text":"ALPHA"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b5de9346-e543-41fc-bb34-7fcb9c54c249"},"usage":{"inputTokens":48,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
index b7af05fb61..9ba1d0a51b 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352142834,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is SAFFRON. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"9f3b1367-3a0e-4793-9ecf-ae67a79f24d2"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352142834,"data":{"title":"Remember this fact for later:","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352142835,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352142836,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352142836,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352143493,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":23,"time":1783352143766,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,14 +12,14 @@
 {"type":"assistant/chunk","seq":26,"time":1783352143768,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"OK"}}}}
 {"type":"assistant/chunk","seq":27,"time":1783352143768,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2883,"outputTokens":19,"cacheReadTokens":0,"reasoningTokens":17}}}}
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 {"type":"user/message","seq":34,"time":1785381573526,"data":{"content":[{"type":"text","text":"What is the project codeword mentioned earlier in this conversation? Reply with exactly that one word and nothing else."}],"source":{"kind":"user"},"role":"user","id":"9f252dc0-3b24-4607-b761-30711b726edb"},"surfaceOp":"append"}
 {"type":"step/start","seq":35,"time":1785381573543,"data":{"turn":2,"step":1}}
-{"type":"request/header","seq":36,"time":1785381573543,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"resume"}}
+{"type":"request/header","seq":36,"time":1785381573543,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"resume"}}
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 {"type":"assistant/chunk","seq":69,"time":1783352148313,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -28,6 +28,6 @@
 {"type":"assistant/chunk","seq":74,"time":1783352148345,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"SAFFRON"}}}}
 {"type":"assistant/chunk","seq":75,"time":1785142306309,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":95,"outputTokens":35,"cacheReadTokens":2816,"reasoningTokens":31}}}}
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+{"type":"assistant/message","seq":77,"time":1785381573552,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking me to recall the project codeword that was mentioned earlier in the conversation. I was told to remember it: SAFFRON."},{"type":"text","text":"SAFFRON"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"a39affbc-097b-4106-912a-99538d18eff8"},"usage":{"inputTokens":95,"outputTokens":35,"cacheReadTokens":2816,"reasoningTokens":31}},"sourceEventSeqs":[37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl
index 0ee3d0a595..c5a9d0f822 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352142834,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is SAFFRON. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"867b46b8-e2fa-4257-a2b1-a8fa12abe782"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352142834,"data":{"title":"Remember this fact for later:","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":1783352142836,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352142836,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":26,"time":1783352143768,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"OK"}}}}
 {"type":"assistant/chunk","seq":27,"time":1783352143768,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2883,"outputTokens":19,"cacheReadTokens":0,"reasoningTokens":17}}}}
 {"type":"assistant/chunk","seq":28,"time":1783352143768,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":29,"time":1783352143771,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to remember a codeword and just reply with \"OK\"."},{"type":"text","text":"OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5dc3014f-f57f-4686-bbe9-8b89079c0b18"},"usage":{"inputTokens":2883,"outputTokens":19,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],"surfaceOp":"append"}
+{"type":"assistant/message","seq":29,"time":1783352143771,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to remember a codeword and just reply with \"OK\"."},{"type":"text","text":"OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5dc3014f-f57f-4686-bbe9-8b89079c0b18"},"usage":{"inputTokens":2883,"outputTokens":19,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],"surfaceOp":"append"}
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@@ -26,7 +26,7 @@
 {"type":"assistant/chunk","seq":107,"time":1783352145221,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_YvHr2bGomk5HhpgDTvE81896","name":"subagent","arguments":"{\"description\": \"Reply ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}}}}
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+{"type":"assistant/message","seq":110,"time":1783352145221,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Let me do these two delegations one at a time as requested.\n\nFirst, I'll use the subagent tool (fresh child) to reply with \"ALPHA\"."},{"type":"tool-call","id":"call_00_YvHr2bGomk5HhpgDTvE81896","name":"subagent","arguments":"{\"description\": \"Reply ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"f09b04f9-fb2b-48b7-a5a7-7634d07c7d0e"},"usage":{"inputTokens":185,"outputTokens":110,"cacheReadTokens":2816,"reasoningTokens":35}},"sourceEventSeqs":[35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109],"surfaceOp":"append"}
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@@ -39,7 +39,7 @@
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-{"type":"assistant/message","seq":206,"time":1783352147503,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The first subagent returned \"ALPHA\". Now I need to use the subagent_fork tool (forked child that inherits this conversation) to ask about the project codeword."},{"type":"tool-call","id":"call_00_JSr5rhREq23wSmwSkCP77184","name":"subagent_fork","arguments":"{\"description\": \"Recall project codeword\", \"prompt\": \"What is the project codeword mentioned earlier in this conversation? Reply with exactly that one word and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b83aa4dd-54b1-4be0-945d-ae15c87cdaef"},"usage":{"inputTokens":54,"outputTokens":128,"cacheReadTokens":3072,"reasoningTokens":40}},"sourceEventSeqs":[115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205],"surfaceOp":"append"}
+{"type":"assistant/message","seq":206,"time":1783352147503,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The first subagent returned \"ALPHA\". Now I need to use the subagent_fork tool (forked child that inherits this conversation) to ask about the project codeword."},{"type":"tool-call","id":"call_00_JSr5rhREq23wSmwSkCP77184","name":"subagent_fork","arguments":"{\"description\": \"Recall project codeword\", \"prompt\": \"What is the project codeword mentioned earlier in this conversation? Reply with exactly that one word and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b83aa4dd-54b1-4be0-945d-ae15c87cdaef"},"usage":{"inputTokens":54,"outputTokens":128,"cacheReadTokens":3072,"reasoningTokens":40}},"sourceEventSeqs":[115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205],"surfaceOp":"append"}
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 {"type":"step/end","seq":209,"time":1783352148348,"data":{"turn":2,"step":2}}
@@ -52,6 +52,6 @@
 {"type":"assistant/chunk","seq":282,"time":1783352149821,"data":{"turn":2,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"PARENT_DONE"}}}}
 {"type":"assistant/chunk","seq":283,"time":1783352149821,"data":{"turn":2,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":69,"outputTokens":69,"cacheReadTokens":3200,"reasoningTokens":64}}}}
 {"type":"assistant/chunk","seq":284,"time":1783352149821,"data":{"turn":2,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":285,"time":1783352149822,"data":{"turn":2,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Both subagents returned:\n1. First (fresh child): \"ALPHA\"\n2. Second (forked child): \"SAFFRON\" - correctly inherited the conversation context where I was asked to remember the codeword \"SAFFRON\".\n\nNow I reply with \"PARENT_DONE\" as instructed."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b882222d-7d27-4547-a603-9cca28b41cec"},"usage":{"inputTokens":69,"outputTokens":69,"cacheReadTokens":3200,"reasoningTokens":64}},"sourceEventSeqs":[211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284],"surfaceOp":"append"}
+{"type":"assistant/message","seq":285,"time":1783352149822,"data":{"turn":2,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Both subagents returned:\n1. First (fresh child): \"ALPHA\"\n2. Second (forked child): \"SAFFRON\" - correctly inherited the conversation context where I was asked to remember the codeword \"SAFFRON\".\n\nNow I reply with \"PARENT_DONE\" as instructed."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b882222d-7d27-4547-a603-9cca28b41cec"},"usage":{"inputTokens":69,"outputTokens":69,"cacheReadTokens":3200,"reasoningTokens":64}},"sourceEventSeqs":[211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284],"surfaceOp":"append"}
 {"type":"step/end","seq":286,"time":1783352149822,"data":{"turn":2,"step":3}}
 {"type":"turn/end","seq":287,"time":1783352149822,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
index ae13a1f327..b4fc996ffa 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352127670,"data":{"content":[{"type":"text","text":"Reply with exactly the word ALPHA and nothing else."}],"source":{"kind":"user"},"role":"user","id":"4088c6ea-4806-4d0a-a5a7-b430ba9fcb7e"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352127670,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352127671,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352127671,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352127671,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352128125,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1783352128125,"data":{"turn":1,"step":1,"index":0,"dt":[115,40,0,0,0,0,1,19,0,0,0,0,1,31,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," the"," word"," \"","AL","P","HA","\""," and"," nothing"," else","."]}}
 {"type":"assistant/chunk","seq":25,"time":1783352128364,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":30,"time":1783352128365,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"ALPHA"}}}}
 {"type":"assistant/chunk","seq":31,"time":1783352128365,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":49,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}}}}
 {"type":"assistant/chunk","seq":32,"time":1783352128365,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":33,"time":1783352128365,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"ALPHA\" and nothing else."},{"type":"text","text":"ALPHA"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"bb0e1208-f1eb-4e92-8ab5-b8f93e2f14a6"},"usage":{"inputTokens":49,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
+{"type":"assistant/message","seq":33,"time":1783352128365,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"ALPHA\" and nothing else."},{"type":"text","text":"ALPHA"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"bb0e1208-f1eb-4e92-8ab5-b8f93e2f14a6"},"usage":{"inputTokens":49,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
 {"type":"step/end","seq":34,"time":1783352128365,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":35,"time":1783352128366,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
index 6939aef6c0..149d8c6df0 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352129662,"data":{"content":[{"type":"text","text":"Reply with exactly the word BETA and nothing else."}],"source":{"kind":"user"},"role":"user","id":"804b9ed3-e2ed-495e-9840-8e0f657661fe"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352129662,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352129663,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352129663,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352129663,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352130236,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1783352130236,"data":{"turn":1,"step":1,"index":0,"dt":[139,38,0,0,0,0,0,35,0,0,0,0,0,36,0,0,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," the"," word"," \"","B","ETA","\""," and"," nothing"," else","."]}}
 {"type":"assistant/chunk","seq":24,"time":1783352130484,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -13,6 +13,6 @@
 {"type":"assistant/chunk","seq":28,"time":1783352130527,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"BETA"}}}}
 {"type":"assistant/chunk","seq":29,"time":1783352130527,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":48,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}}}}
 {"type":"assistant/chunk","seq":30,"time":1783352130527,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":31,"time":1783352130528,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"BETA\" and nothing else."},{"type":"text","text":"BETA"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"f17a3ee5-b022-4527-873e-a709c4c41c70"},"usage":{"inputTokens":48,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
+{"type":"assistant/message","seq":31,"time":1783352130528,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"BETA\" and nothing else."},{"type":"text","text":"BETA"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"f17a3ee5-b022-4527-873e-a709c4c41c70"},"usage":{"inputTokens":48,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":18}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
 {"type":"step/end","seq":32,"time":1783352130528,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":33,"time":1783352130528,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
index 303ceb6e6b..3eced8fa8e 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352126251,"data":{"content":[{"type":"text","text":"Use the subagent tool TWICE, once at a time, to delegate two subtasks to child agents. First subtask: 'Reply with exactly the word ALPHA and nothing else.' Second subtask (after the first returns): 'Reply with exactly the word BETA and nothing else.' After both subagents return, reply with the single word PARENT_DONE and stop. Do not use the bash tool."}],"source":{"kind":"user"},"role":"user","id":"26ff1621-20b5-4c1e-b546-ed4c6f6ec99e"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352126251,"data":{"title":"Use the subagent tool TWICE,","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352126252,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352126253,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352126253,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352126729,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1783352126729,"data":{"turn":1,"step":1,"index":0,"dt":[119,29,1,0,0,0,29,0,1,0,0,1,24,30,29,0,0,1,0,30,0,0,29,1,27,0,0,1,0,0,29,29,0,0,0,33,25,1,0,29,0,1,29,0,0,0,0,1],"texts":["The"," user"," wants"," me"," to"," use"," the"," sub","agent"," tool"," twice",","," sequentially"," (","one"," at"," a"," time",")."," First"," sub","agent"," should"," reply"," with"," \"","AL","P","HA","\","," second"," with"," \"","B","ETA","\"."," After"," both"," return",","," I"," reply"," with"," \"","PAR","ENT","_D","ONE","\"."]}}
 {"type":"assistant/chunk","seq":55,"time":1783352127343,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":91,"time":1783352127665,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_7zDCCjdsQgrk5LR2bAEQ1010","name":"subagent","arguments":"{\"description\": \"Return ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":92,"time":1783352127665,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2938,"outputTokens":124,"cacheReadTokens":0,"reasoningTokens":49}}}}
 {"type":"assistant/chunk","seq":93,"time":1783352127665,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":94,"time":1783352127668,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the subagent tool twice, sequentially (one at a time). First subagent should reply with \"ALPHA\", second with \"BETA\". After both return, I reply with \"PARENT_DONE\"."},{"type":"tool-call","id":"call_00_7zDCCjdsQgrk5LR2bAEQ1010","name":"subagent","arguments":"{\"description\": \"Return ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"e7b074cc-90a3-4492-b7d3-b0b991d74157"},"usage":{"inputTokens":2938,"outputTokens":124,"cacheReadTokens":0,"reasoningTokens":49}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93],"surfaceOp":"append"}
+{"type":"assistant/message","seq":94,"time":1783352127668,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the subagent tool twice, sequentially (one at a time). First subagent should reply with \"ALPHA\", second with \"BETA\". After both return, I reply with \"PARENT_DONE\"."},{"type":"tool-call","id":"call_00_7zDCCjdsQgrk5LR2bAEQ1010","name":"subagent","arguments":"{\"description\": \"Return ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"e7b074cc-90a3-4492-b7d3-b0b991d74157"},"usage":{"inputTokens":2938,"outputTokens":124,"cacheReadTokens":0,"reasoningTokens":49}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93],"surfaceOp":"append"}
 {"type":"tool/call","seq":95,"time":1783352127668,"data":{"turn":1,"step":1,"callId":"call_00_7zDCCjdsQgrk5LR2bAEQ1010","name":"subagent","arguments":"{\"description\": \"Return ALPHA only\", \"prompt\": \"Reply with exactly the word ALPHA and nothing else.\"}"}}
 {"type":"tool/result","seq":96,"time":1783352128371,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_7zDCCjdsQgrk5LR2bAEQ1010"},"content":[{"type":"tool-result","toolCallId":"call_00_7zDCCjdsQgrk5LR2bAEQ1010","content":[{"type":"text","text":"ALPHA"}],"isError":false}],"role":"user","id":"bb7e00aa-75f1-4ab0-9dae-a1018dec23a1"}},"sourceEventSeqs":[95],"surfaceOp":"append"}
 {"type":"step/end","seq":97,"time":1783352128371,"data":{"turn":1,"step":1}}
@@ -25,7 +25,7 @@
 {"type":"assistant/chunk","seq":157,"time":1783352129661,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_FudNKuJ0fchSptGy3Scw1411","name":"subagent","arguments":"{\"description\": \"Return BETA only\", \"prompt\": \"Reply with exactly the word BETA and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":158,"time":1783352129661,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":133,"outputTokens":96,"cacheReadTokens":2944,"reasoningTokens":23}}}}
 {"type":"assistant/chunk","seq":159,"time":1783352129661,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":160,"time":1783352129661,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"First subagent returned \"ALPHA\". Now I'll call the second subagent to return \"BETA\"."},{"type":"tool-call","id":"call_00_FudNKuJ0fchSptGy3Scw1411","name":"subagent","arguments":"{\"description\": \"Return BETA only\", \"prompt\": \"Reply with exactly the word BETA and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"35db1903-56e8-4311-8f48-2d5a351782a0"},"usage":{"inputTokens":133,"outputTokens":96,"cacheReadTokens":2944,"reasoningTokens":23}},"sourceEventSeqs":[99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159],"surfaceOp":"append"}
+{"type":"assistant/message","seq":160,"time":1783352129661,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"First subagent returned \"ALPHA\". Now I'll call the second subagent to return \"BETA\"."},{"type":"tool-call","id":"call_00_FudNKuJ0fchSptGy3Scw1411","name":"subagent","arguments":"{\"description\": \"Return BETA only\", \"prompt\": \"Reply with exactly the word BETA and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"35db1903-56e8-4311-8f48-2d5a351782a0"},"usage":{"inputTokens":133,"outputTokens":96,"cacheReadTokens":2944,"reasoningTokens":23}},"sourceEventSeqs":[99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159],"surfaceOp":"append"}
 {"type":"tool/call","seq":161,"time":1783352129661,"data":{"turn":1,"step":2,"callId":"call_00_FudNKuJ0fchSptGy3Scw1411","name":"subagent","arguments":"{\"description\": \"Return BETA only\", \"prompt\": \"Reply with exactly the word BETA and nothing else.\"}"}}
 {"type":"tool/result","seq":162,"time":1783352130531,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_00_FudNKuJ0fchSptGy3Scw1411"},"content":[{"type":"tool-result","toolCallId":"call_00_FudNKuJ0fchSptGy3Scw1411","content":[{"type":"text","text":"BETA"}],"isError":false}],"role":"user","id":"a06af73a-85f6-48ac-9aaa-3821d278c5ad"}},"sourceEventSeqs":[161],"surfaceOp":"append"}
 {"type":"step/end","seq":163,"time":1783352130531,"data":{"turn":1,"step":2}}
@@ -38,6 +38,6 @@
 {"type":"assistant/chunk","seq":202,"time":1783352131242,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"PARENT_DONE"}}}}
 {"type":"assistant/chunk","seq":203,"time":1783352131242,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":115,"outputTokens":35,"cacheReadTokens":3072,"reasoningTokens":30}}}}
 {"type":"assistant/chunk","seq":204,"time":1783352131242,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":205,"time":1783352131243,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Both subagents have returned: first with \"ALPHA\", second with \"BETA\". Now I should reply with \"PARENT_DONE\"."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"d9413f46-b75b-426c-b3f6-b040bbdf7b65"},"usage":{"inputTokens":115,"outputTokens":35,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
+{"type":"assistant/message","seq":205,"time":1783352131243,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Both subagents have returned: first with \"ALPHA\", second with \"BETA\". Now I should reply with \"PARENT_DONE\"."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"d9413f46-b75b-426c-b3f6-b040bbdf7b65"},"usage":{"inputTokens":115,"outputTokens":35,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
 {"type":"step/end","seq":206,"time":1783352131243,"data":{"turn":1,"step":3}}
 {"type":"turn/end","seq":207,"time":1783352131243,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
index 38534a09cf..170f871f48 100644
--- a/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352120856,"data":{"content":[{"type":"text","text":"Reply with exactly the word CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"f3a2e52a-cfc3-4f9a-b25a-cb48f61e598e"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1783352120856,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352120856,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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 {"type":"assistant/chunk","seq":23,"time":1783352121747,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":28,"time":1783352121777,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"CHILD_OK"}}}}
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 {"type":"assistant/chunk","seq":30,"time":1783352121777,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":31,"time":1783352121777,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word CHILD_OK and nothing else."},{"type":"text","text":"CHILD_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"473c2431-f846-4cac-aa6e-eb757275bfad"},"usage":{"inputTokens":48,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
+{"type":"assistant/message","seq":31,"time":1783352121777,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word CHILD_OK and nothing else."},{"type":"text","text":"CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"473c2431-f846-4cac-aa6e-eb757275bfad"},"usage":{"inputTokens":48,"outputTokens":21,"cacheReadTokens":2816,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl
index f35595a402..8e2569df7c 100644
--- a/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352119274,"data":{"content":[{"type":"text","text":"Use the subagent tool exactly once to delegate this subtask to a child agent: 'Reply with exactly the word CHILD_OK and nothing else.' After the subagent returns, reply with the single word PARENT_DONE and stop. Do not use the bash tool."}],"source":{"kind":"user"},"role":"user","id":"36c0b82b-ab96-4985-9b44-8895eeedd725"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352119274,"data":{"title":"Use the subagent tool exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352119275,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352119281,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352119281,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352119925,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":109,"time":1783352120851,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_gVbLWC12Qu8JheZpVRRz8749","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":110,"time":1783352120852,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2907,"outputTokens":142,"cacheReadTokens":0,"reasoningTokens":67}}}}
 {"type":"assistant/chunk","seq":111,"time":1783352120852,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":112,"time":1783352120854,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Use the subagent tool exactly once to delegate the task: \"Reply with exactly the word CHILD_OK and nothing else.\"\n2. After the subagent returns, reply with the single word PARENT_DONE and stop.\n3. Do not use the bash tool.\n\nLet me do this."},{"type":"tool-call","id":"call_00_gVbLWC12Qu8JheZpVRRz8749","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"9b0aea89-dd8c-46ff-84ca-616b5c6f883b"},"usage":{"inputTokens":2907,"outputTokens":142,"cacheReadTokens":0,"reasoningTokens":67}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111],"surfaceOp":"append"}
+{"type":"assistant/message","seq":112,"time":1783352120854,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Use the subagent tool exactly once to delegate the task: \"Reply with exactly the word CHILD_OK and nothing else.\"\n2. After the subagent returns, reply with the single word PARENT_DONE and stop.\n3. Do not use the bash tool.\n\nLet me do this."},{"type":"tool-call","id":"call_00_gVbLWC12Qu8JheZpVRRz8749","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"9b0aea89-dd8c-46ff-84ca-616b5c6f883b"},"usage":{"inputTokens":2907,"outputTokens":142,"cacheReadTokens":0,"reasoningTokens":67}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111],"surfaceOp":"append"}
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@@ -25,6 +25,6 @@
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+{"type":"assistant/message","seq":157,"time":1783352122732,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The subagent returned \"CHILD_OK\" as expected. Now I need to reply with the single word \"PARENT_DONE\" and stop."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"32ef455a-f8a0-41c4-893e-ddf03970302d"},"usage":{"inputTokens":120,"outputTokens":35,"cacheReadTokens":2944,"reasoningTokens":30}},"sourceEventSeqs":[117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/text-turn/session.jsonl b/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
index 348c891312..9fe9ade111 100644
--- a/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783600629541,"data":{"content":[{"type":"text","text":"Reply with exactly the word: PONG. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"2da6fcd7-2410-460a-bb8f-bc6491f7b0b0"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783600629541,"data":{"title":"Reply with exactly the word:","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783600629542,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783600629542,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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 {"type":"assistant/chunk","seq":26,"time":1783600630980,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -13,6 +13,6 @@
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-{"type":"assistant/message","seq":33,"time":1783600631011,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"PONG\" and not use any tools."},{"type":"text","text":"PONG"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"f068f187-1ec4-4bc7-8e25-75eff64ba148"},"usage":{"inputTokens":3091,"outputTokens":23,"cacheReadTokens":0,"reasoningTokens":20}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
+{"type":"assistant/message","seq":33,"time":1783600631011,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly the word \"PONG\" and not use any tools."},{"type":"text","text":"PONG"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"f068f187-1ec4-4bc7-8e25-75eff64ba148"},"usage":{"inputTokens":3091,"outputTokens":23,"cacheReadTokens":0,"reasoningTokens":20}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/todo-write/session.jsonl b/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
index 429c76226e..c6b27e9c6d 100644
--- a/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352057655,"data":{"content":[{"type":"text","text":"Use the todo_write tool to record a plan with exactly three todos: \"read the code\" (in_progress), \"write the fix\" (pending), \"run the tests\" (pending). Send all three in one todo_write call. Then reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"18c389cb-ab26-4a60-96aa-a1314eab3759"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352057655,"data":{"title":"Use the todo_write tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":1783352057657,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352057657,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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@@ -27,6 +27,6 @@
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-{"type":"assistant/message","seq":131,"time":1783352059981,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The todos have been written successfully. Now I just need to reply with the single word \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"a1cc5e0d-1e4e-43ab-89ab-f7d070a4aeea"},"usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130],"surfaceOp":"append"}
+{"type":"assistant/message","seq":131,"time":1783352059981,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The todos have been written successfully. Now I just need to reply with the single word \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"a1cc5e0d-1e4e-43ab-89ab-f7d070a4aeea"},"usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/tool-call-turn/session.jsonl b/examples/acp-agent/tests/snapshots/tool-call-turn/session.jsonl
index 24ea03494f..9f6ceb5930 100644
--- a/examples/acp-agent/tests/snapshots/tool-call-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/tool-call-turn/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352044771,"data":{"content":[{"type":"text","text":"Use the bash tool to run exactly: echo SNAPSHOT_OK. Then reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"033e6f20-6021-4ecc-a80f-de758a3dc877"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352044771,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352044773,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352044773,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352044773,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":59,"time":1783352045867,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific bash command and then reply with DONE."},{"type":"tool-call","id":"call_00_Rn2Mz1y8uZN62ukEXiNO2077","name":"bash","arguments":"{\"command\": \"echo SNAPSHOT_OK\", \"description\": \"Run echo SNAPSHOT_OK\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"f6e8acda-8401-4f4a-82e2-e88c4c2c2152"},"usage":{"inputTokens":2879,"outputTokens":89,"cacheReadTokens":0,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}
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@@ -26,6 +26,6 @@
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 {"type":"assistant/chunk","seq":95,"time":1783352047156,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":170,"outputTokens":28,"cacheReadTokens":2816,"reasoningTokens":25}}}}
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-{"type":"assistant/message","seq":97,"time":1783352047158,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command executed successfully and printed SNAPSHOT_OK. Now I need to reply with the single word DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"ea5b52d3-d8b6-4d00-b2c7-13c0ec6dc062"},"usage":{"inputTokens":170,"outputTokens":28,"cacheReadTokens":2816,"reasoningTokens":25}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96],"surfaceOp":"append"}
+{"type":"assistant/message","seq":97,"time":1783352047158,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command executed successfully and printed SNAPSHOT_OK. Now I need to reply with the single word DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"ea5b52d3-d8b6-4d00-b2c7-13c0ec6dc062"},"usage":{"inputTokens":170,"outputTokens":28,"cacheReadTokens":2816,"reasoningTokens":25}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl b/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl
index 396860773e..af78dc43cf 100644
--- a/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1785078727719,"data":{"content":[{"type":"text","text":"Use the web_fetch tool exactly once to fetch http://127.0.0.1:43117/menu.html, then reply with exactly DONE. Do not describe the content."}],"source":{"kind":"user"},"role":"user","id":"6c8e9279-bb26-4369-b425-951cd33d6b15"},"surfaceOp":"append"}
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-{"type":"request/header","seq":4,"time":1785078727731,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-pro"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785078727731,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-pro"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,9 +12,9 @@
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-{"type":"assistant/message","seq":79,"time":1785078729807,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the web_fetch tool exactly once to fetch http://127.0.0.1:43117/menu.html, then reply with exactly \"DONE\". Let me do that."},{"type":"tool-call","id":"call_00_sxjOyfDYN07koiE7jiIa5326","name":"web_fetch","arguments":"{\"url\": \"http://127.0.0.1:43117/menu.html\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-pro"},"id":"58db7df1-5331-49ca-b34f-09c59d8d8c85"},"usage":{"inputTokens":5405,"outputTokens":103,"cacheReadTokens":0,"reasoningTokens":44}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78],"surfaceOp":"append"}
+{"type":"assistant/message","seq":79,"time":1785078729807,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the web_fetch tool exactly once to fetch http://127.0.0.1:43117/menu.html, then reply with exactly \"DONE\". Let me do that."},{"type":"tool-call","id":"call_00_sxjOyfDYN07koiE7jiIa5326","name":"web_fetch","arguments":"{\"url\": \"http://127.0.0.1:43117/menu.html\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-pro"},"id":"58db7df1-5331-49ca-b34f-09c59d8d8c85"},"usage":{"inputTokens":5405,"outputTokens":103,"cacheReadTokens":0,"reasoningTokens":44}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78],"surfaceOp":"append"}
 {"type":"tool/call","seq":80,"time":1785078729809,"data":{"turn":1,"step":1,"callId":"call_00_sxjOyfDYN07koiE7jiIa5326","name":"web_fetch","arguments":"{\"url\": \"http://127.0.0.1:43117/menu.html\"}"}}
-{"type":"tool/result","seq":81,"time":1785078729843,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_sxjOyfDYN07koiE7jiIa5326"},"content":[{"type":"tool-result","toolCallId":"call_00_sxjOyfDYN07koiE7jiIa5326","content":[{"type":"text","text":"Fetched http://127.0.0.1:43117/menu.html (HTTP 200)\n\nMenu\n\n# Café menu\n\nPrices include **service & _tax_** — updated daily.\n\n-   Espresso\n-   Flat white\n\n| Drink | Price |\n| --- | --- |\n| Espresso | €2  |\n| Flat white | €3  |\n\nSee [today’s specials](https://fixture.invalid/specials)."}],"isError":false}],"role":"user","id":"fca910ec-ed8f-45a9-8dda-1e88cfd41126"}},"sourceEventSeqs":[80],"surfaceOp":"append"}
+{"type":"tool/result","seq":81,"time":1785078729843,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_sxjOyfDYN07koiE7jiIa5326"},"content":[{"type":"tool-result","toolCallId":"call_00_sxjOyfDYN07koiE7jiIa5326","content":[{"type":"text","text":"Fetched http://127.0.0.1:43117/menu.html (HTTP 200)\n\nMenu\n\n# Café menu\n\nPrices include **service & _tax_** — updated daily.\n\n-   Espresso\n-   Flat white\n\n| Drink | Price |\n| --- | --- |\n| Espresso | €2  |\n| Flat white | €3  |\n\nSee [today’s specials](https://fixture.invalid/specials)."}],"isError":false}],"role":"user","id":"fca910ec-ed8f-45a9-8dda-1e88cfd41126"},"meta":{"url":"http://127.0.0.1:43117/menu.html","statusCode":200,"truncated":false}},"sourceEventSeqs":[80],"surfaceOp":"append"}
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@@ -26,6 +26,6 @@
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 {"type":"assistant/chunk","seq":122,"time":1785078731282,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":123,"time":1785078731283,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked me to fetch the URL, then reply with exactly \"DONE\". I've fetched it. Now I just reply with \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-pro"},"id":"6d76dbbd-50da-4fe1-aa5f-2f7f02605974"},"usage":{"inputTokens":239,"outputTokens":34,"cacheReadTokens":5376,"reasoningTokens":31}},"sourceEventSeqs":[84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122],"surfaceOp":"append"}
+{"type":"assistant/message","seq":123,"time":1785078731283,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked me to fetch the URL, then reply with exactly \"DONE\". I've fetched it. Now I just reply with \"DONE\"."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-pro"},"id":"6d76dbbd-50da-4fe1-aa5f-2f7f02605974"},"usage":{"inputTokens":239,"outputTokens":34,"cacheReadTokens":5376,"reasoningTokens":31}},"sourceEventSeqs":[84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl b/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
index 268c7db0f6..c7a957525e 100644
--- a/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783600636316,"data":{"content":[{"type":"text","text":"Reply with exactly the word WF_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"660a2954-67fc-4406-8703-189f3c0ee81e"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783600636316,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783600636316,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783600636317,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783600636317,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783600638073,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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 {"type":"assistant/chunk","seq":24,"time":1783600638276,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
@@ -12,6 +12,6 @@
 {"type":"assistant/chunk","seq":30,"time":1783600638280,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"WF_CHILD_OK"}}}}
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diff --git a/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl b/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
index aa29969cf5..5c4b1086ee 100644
--- a/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783600631838,"data":{"content":[{"type":"text","text":"Use the workflow tool exactly once, with args omitted, meta set to { \"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\" }, and this EXACT script body (copy it verbatim):\nphase('Run')\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\nreturn { reply }\nAfter the workflow returns, reply with the single word WORKFLOW_DONE and stop. Do not use any other tool."}],"source":{"kind":"user"},"role":"user","id":"7752d242-0fc3-421c-ad28-60333479140c"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783600631838,"data":{"title":"Use the workflow tool exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
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-{"type":"request/header","seq":4,"time":1783600631839,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783600631839,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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@@ -12,7 +12,7 @@
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+{"type":"assistant/message","seq":160,"time":1783600636247,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use the workflow tool exactly once with specific parameters. Let me carefully follow the instructions:\n\n1. args omitted (so I don't include it)\n2. meta = { \"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\" }\n3. script = as given verbatim\n4. After it returns, reply with \"WORKFLOW_DONE\"\n\nLet me do exactly that."},{"type":"tool-call","id":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4fb85f37-8283-441a-8f6a-9a1ac9613d89"},"usage":{"inputTokens":3174,"outputTokens":191,"cacheReadTokens":0,"reasoningTokens":88}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159],"surfaceOp":"append"}
 {"type":"tool/call","seq":161,"time":1783600636247,"data":{"turn":1,"step":1,"callId":"call_00_dD2BLuNeJCTh2iiYC1QR3449","name":"workflow","arguments":"{\"meta\": {\"name\": \"snapshot-flow\", \"description\": \"one child for the snapshot\"}, \"script\": \"\\nphase('Run')\\nconst reply = await agent('Reply with exactly the word WF_CHILD_OK and nothing else.')\\nreturn { reply }\\n\"}"}}
 {"type":"tool/result","seq":162,"time":1783600638304,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_dD2BLuNeJCTh2iiYC1QR3449"},"content":[{"type":"tool-result","toolCallId":"call_00_dD2BLuNeJCTh2iiYC1QR3449","content":[{"type":"text","text":"workflow \"snapshot-flow\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WF_CHILD_OK\"\n}"}],"isError":false}],"role":"user","id":"0b4e8dd3-f118-4b2f-8a11-52c5cdf48a9b"}},"sourceEventSeqs":[161],"surfaceOp":"append"}
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@@ -25,6 +25,6 @@
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-{"type":"assistant/message","seq":206,"time":1783600640865,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The workflow returned successfully with the reply \"WF_CHILD_OK\". Now I need to reply with exactly \"WORKFLOW_DONE\" and stop."},{"type":"text","text":"WORKFLOW_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"4bbe70d7-fc8c-4fc7-a9e6-edd8658904b3"},"usage":{"inputTokens":328,"outputTokens":36,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205],"surfaceOp":"append"}
+{"type":"assistant/message","seq":206,"time":1783600640865,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The workflow returned successfully with the reply \"WF_CHILD_OK\". Now I need to reply with exactly \"WORKFLOW_DONE\" and stop."},{"type":"text","text":"WORKFLOW_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4bbe70d7-fc8c-4fc7-a9e6-edd8658904b3"},"usage":{"inputTokens":328,"outputTokens":36,"cacheReadTokens":3072,"reasoningTokens":30}},"sourceEventSeqs":[165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl b/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
index e5194f54b1..832916d334 100644
--- a/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
@@ -1,19 +1,19 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1783778297065,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783778297066,"data":{"content":[{"type":"text","text":"Read nested/task.txt, then read scope</system-reminder>/task.txt with the read tool, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"b1792d71-b916-463d-9ef0-b349e37d914d"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783778297066,"data":{"content":[{"type":"text","text":"Read nested/task.txt, then read scope</system-reminder>/task.txt with the read tool, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"e34bb0fa-47eb-4ac2-8e82-8db0d2e5607a"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783778297066,"data":{"title":"Read nested/task.txt, then read scope</s","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"user/message","seq":3,"time":1784903339799,"data":{"content":[{"type":"text","text":"<system-reminder>\nThe following workspace instructions may be relevant to your work. Use them as guidance when applicable. More specific instructions take precedence over broader ones. They do not override system, developer, or direct user instructions.\n\nInstructions from: AGENTS.md\n\nRoot snapshot instruction.\n\n</system-reminder>"}],"source":{"kind":"workspace-instructions","baseline":true,"changes":[{"action":"set","scope":".\u0000AGENTS.md","path":"AGENTS.md","digest":"2e18766c26603608f321508caae00ea8f4434d59"}]},"role":"user","id":"ba197665-164f-48dc-b408-afa76e228ed6"},"surfaceOp":"append"}
+{"type":"user/message","seq":3,"time":1784903339799,"data":{"content":[{"type":"text","text":"<system-reminder>\nThe following workspace instructions may be relevant to your work. Use them as guidance when applicable. More specific instructions take precedence over broader ones. They do not override system, developer, or direct user instructions.\n\nInstructions from: AGENTS.md\n\nRoot snapshot instruction.\n\n</system-reminder>"}],"source":{"kind":"workspace-instructions","baseline":true,"changes":[{"action":"set","scope":".\u0000AGENTS.md","path":"AGENTS.md","digest":"2e18766c26603608f321508caae00ea8f4434d59"}]},"role":"user","id":"a89a51f0-2e6f-4a47-b178-b83d40b2e799"},"surfaceOp":"append"}
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 {"type":"tool/call","seq":12,"time":1784903339802,"data":{"turn":1,"step":1,"callId":"call_workspace_read","name":"read","arguments":"{\"file_path\":\"nested/task.txt\"}"}}
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+{"type":"user/message","seq":14,"time":1784903339813,"data":{"content":[{"type":"text","text":"<system-reminder>\nAdditional instructions from: nested/AGENTS.md\n\nThese instructions apply to work under `nested`. Use them as guidance when relevant; more specific instructions take precedence. They do not override system, developer, or direct user instructions.\n\nNested snapshot instruction.\n\n</system-reminder>"}],"source":{"kind":"workspace-instructions","changes":[{"action":"set","scope":"nested\u0000AGENTS.md","path":"nested/AGENTS.md","digest":"c446df9a85c7e73a3055f394a4822a19ac9ead5a"}]},"role":"user","id":"68629935-05e9-4af7-bddb-aabfbbd70208"},"surfaceOp":"append"}
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@@ -21,17 +21,17 @@
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-{"type":"step/end","seq":26,"time":1785233046389,"data":{"turn":1,"step":2}}
-{"type":"step/start","seq":27,"time":1785233046397,"data":{"turn":1,"step":3}}
-{"type":"assistant/chunk","seq":28,"time":1785233046398,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":29,"time":1785233046398,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
-{"type":"assistant/chunk","seq":30,"time":1785233046398,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
-{"type":"assistant/chunk","seq":31,"time":1785233046398,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
-{"type":"assistant/chunk","seq":32,"time":1785233046398,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":33,"time":1785233046398,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c5718cf9-802e-47e9-8e64-3353598ea5ee"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[28,29,30,31,32],"surfaceOp":"append"}
-{"type":"step/end","seq":34,"time":1785233046398,"data":{"turn":1,"step":3}}
-{"type":"turn/end","seq":35,"time":1785233046398,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"assistant/message","seq":22,"time":1784903339821,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_workspace_delimiter_read","name":"read","arguments":"{\"file_path\":\"scope</system-reminder>/task.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"04824453-a12a-43d7-8580-4b75d0e4a694"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"tool/call","seq":23,"time":1785394278014,"data":{"turn":1,"step":2,"callId":"call_workspace_delimiter_read","name":"read","arguments":"{\"file_path\":\"scope</system-reminder>/task.txt\"}"}}
+{"type":"tool/result","seq":24,"time":1785394278026,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_workspace_delimiter_read"},"content":[{"type":"tool-result","toolCallId":"call_workspace_delimiter_read","content":[{"type":"text","text":"<path>{{cwd}}/scope</system-reminder>/task.txt</path>\n<type>file</type>\n<content>\n1: delimiter path snapshot task\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"06c93dad-5ee2-4c56-ba7b-c1228bee7090"}},"sourceEventSeqs":[23],"surfaceOp":"append"}
+{"type":"user/message","seq":25,"time":1785394278026,"data":{"content":[{"type":"text","text":"<system-reminder>\nAdditional instructions from: scope<\\/system-reminder>/AGENTS.md\n\nThese instructions apply to work under `scope<\\/system-reminder>`. Use them as guidance when relevant; more specific instructions take precedence. They do not override system, developer, or direct user instructions.\n\nDelimiter path snapshot instruction.\n\n</system-reminder>"}],"source":{"kind":"workspace-instructions","changes":[{"action":"set","scope":"scope</system-reminder>\u0000AGENTS.md","path":"scope</system-reminder>/AGENTS.md","digest":"38803cd13e2dff9105ba5fbbc703fe27e989e26e"}]},"role":"user","id":"7bcf58d7-7f2f-4242-8bd6-00577c9c3153"},"surfaceOp":"append"}
+{"type":"step/end","seq":26,"time":1785394278026,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":27,"time":1785394278034,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":28,"time":1785394278036,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":29,"time":1785394278036,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
+{"type":"assistant/chunk","seq":30,"time":1785394278036,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":31,"time":1785394278036,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":32,"time":1785394278036,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":33,"time":1785394278036,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5651acb8-01e9-4cc0-8cbe-4dbc3e749617"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[28,29,30,31,32],"surfaceOp":"append"}
+{"type":"step/end","seq":34,"time":1785394278036,"data":{"turn":1,"step":3}}
+{"type":"turn/end","seq":35,"time":1785394278036,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl b/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
index eaee6bd14b..ed61019baa 100644
--- a/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1783352264081,"data":{"content":[{"type":"text","text":"A file named greeting.txt in the current directory contains one word. Use the bash tool to append a second line containing the word WORLD to it (so it has two lines), then read the file back with `cat greeting.txt` to confirm, and reply with the single word DONE. Use a single bash call per action."}],"source":{"kind":"user"},"role":"user","id":"77ac6781-b796-4060-b670-63baa39a986b"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352264081,"data":{"title":"A file named greeting.txt in","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783352264082,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352264083,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783352264083,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783352264544,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1783352264544,"data":{"turn":1,"step":1,"index":0,"dt":[98,32,1,0,32,1,1,0,31,0,32,33,0,0,1,29,0,87,1,11,33,1,0,0,0,0,33,1,32,0,1,0,35,1,35,0,0,0,1,0,30,0,0,0,0,1,31,1,0,0,32,1,0,28],"texts":["The"," user"," wants"," me"," to",":\n","1","."," Read"," the"," file"," greeting",".txt","\n","2","."," Append"," the"," word"," WORLD"," as"," a"," second"," line","\n","3","."," Read"," the"," file"," back"," with"," cat"," to"," confirm","\n","4","."," Reply"," with"," D","ONE","\n\n","Let"," me"," start"," by"," reading"," the"," file"," to"," see"," its"," contents","."]}}
 {"type":"assistant/chunk","seq":61,"time":1783352265297,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":76,"time":1783352265489,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_OjRFB4zvxu6UALDjytZD0978","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}}}}
 {"type":"assistant/chunk","seq":77,"time":1783352265489,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":2918,"outputTokens":101,"cacheReadTokens":0,"reasoningTokens":55}}}}
 {"type":"assistant/chunk","seq":78,"time":1783352265489,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":79,"time":1783352265491,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Read the file greeting.txt\n2. Append the word WORLD as a second line\n3. Read the file back with cat to confirm\n4. Reply with DONE\n\nLet me start by reading the file to see its contents."},{"type":"tool-call","id":"call_00_OjRFB4zvxu6UALDjytZD0978","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3f154ea9-6cf0-4d0a-a478-503962bfe8e1"},"usage":{"inputTokens":2918,"outputTokens":101,"cacheReadTokens":0,"reasoningTokens":55}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78],"surfaceOp":"append"}
+{"type":"assistant/message","seq":79,"time":1783352265491,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to:\n1. Read the file greeting.txt\n2. Append the word WORLD as a second line\n3. Read the file back with cat to confirm\n4. Reply with DONE\n\nLet me start by reading the file to see its contents."},{"type":"tool-call","id":"call_00_OjRFB4zvxu6UALDjytZD0978","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3f154ea9-6cf0-4d0a-a478-503962bfe8e1"},"usage":{"inputTokens":2918,"outputTokens":101,"cacheReadTokens":0,"reasoningTokens":55}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78],"surfaceOp":"append"}
 {"type":"tool/call","seq":80,"time":1783352265491,"data":{"turn":1,"step":1,"callId":"call_00_OjRFB4zvxu6UALDjytZD0978","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}}
 {"type":"tool/result","seq":81,"time":1783352265504,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_OjRFB4zvxu6UALDjytZD0978"},"content":[{"type":"tool-result","toolCallId":"call_00_OjRFB4zvxu6UALDjytZD0978","content":[{"type":"text","text":"<path>{{cwd}}/greeting.txt</path>\n<type>file</type>\n<content>\n1: hello\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"59ffbde4-d450-4564-a907-beeec29af0d0"}},"sourceEventSeqs":[80],"surfaceOp":"append"}
 {"type":"step/end","seq":82,"time":1783352265504,"data":{"turn":1,"step":1}}
@@ -25,7 +25,7 @@
 {"type":"assistant/chunk","seq":153,"time":1783352267302,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_IUUvbNiPcnwhVL8ErEFS4806","name":"bash","arguments":"{\"command\": \"printf '\\\\nWORLD' >> greeting.txt\", \"description\": \"Append newline and WORLD to greeting.txt\"}"}}}}
 {"type":"assistant/chunk","seq":154,"time":1783352267302,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":261,"outputTokens":107,"cacheReadTokens":2816,"reasoningTokens":32}}}}
 {"type":"assistant/chunk","seq":155,"time":1783352267302,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":156,"time":1783352267302,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file contains \"hello\" on one line. Now I need to append a second line with \"WORLD\" to it. Then cat it to confirm."},{"type":"tool-call","id":"call_00_IUUvbNiPcnwhVL8ErEFS4806","name":"bash","arguments":"{\"command\": \"printf '\\\\nWORLD' >> greeting.txt\", \"description\": \"Append newline and WORLD to greeting.txt\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b05626ab-99a8-4411-a6ce-dd3bf513c5ef"},"usage":{"inputTokens":261,"outputTokens":107,"cacheReadTokens":2816,"reasoningTokens":32}},"sourceEventSeqs":[84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
+{"type":"assistant/message","seq":156,"time":1783352267302,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file contains \"hello\" on one line. Now I need to append a second line with \"WORLD\" to it. Then cat it to confirm."},{"type":"tool-call","id":"call_00_IUUvbNiPcnwhVL8ErEFS4806","name":"bash","arguments":"{\"command\": \"printf '\\\\nWORLD' >> greeting.txt\", \"description\": \"Append newline and WORLD to greeting.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b05626ab-99a8-4411-a6ce-dd3bf513c5ef"},"usage":{"inputTokens":261,"outputTokens":107,"cacheReadTokens":2816,"reasoningTokens":32}},"sourceEventSeqs":[84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],"surfaceOp":"append"}
 {"type":"tool/call","seq":157,"time":1783352267302,"data":{"turn":1,"step":2,"callId":"call_00_IUUvbNiPcnwhVL8ErEFS4806","name":"bash","arguments":"{\"command\": \"printf '\\\\nWORLD' >> greeting.txt\", \"description\": \"Append newline and WORLD to greeting.txt\"}"}}
 {"type":"tool/result","seq":158,"time":1783352267330,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_00_IUUvbNiPcnwhVL8ErEFS4806"},"content":[{"type":"tool-result","toolCallId":"call_00_IUUvbNiPcnwhVL8ErEFS4806","content":[{"type":"text","text":"(no output)"}],"isError":false}],"role":"user","id":"8b56dd36-047b-42a1-9859-913b3c78abfa"}},"sourceEventSeqs":[157],"surfaceOp":"append"}
 {"type":"step/end","seq":159,"time":1783352267330,"data":{"turn":1,"step":2}}
@@ -38,7 +38,7 @@
 {"type":"assistant/chunk","seq":200,"time":1783352268414,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}}}}
 {"type":"assistant/chunk","seq":201,"time":1783352268414,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":126,"outputTokens":77,"cacheReadTokens":3072,"reasoningTokens":12}}}}
 {"type":"assistant/chunk","seq":202,"time":1783352268414,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":203,"time":1783352268415,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Good, now let me read the file back with cat."},{"type":"tool-call","id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5ba8f87c-8901-4aaa-a069-259fa4d7bb54"},"usage":{"inputTokens":126,"outputTokens":77,"cacheReadTokens":3072,"reasoningTokens":12}},"sourceEventSeqs":[161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202],"surfaceOp":"append"}
+{"type":"assistant/message","seq":203,"time":1783352268415,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Good, now let me read the file back with cat."},{"type":"tool-call","id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5ba8f87c-8901-4aaa-a069-259fa4d7bb54"},"usage":{"inputTokens":126,"outputTokens":77,"cacheReadTokens":3072,"reasoningTokens":12}},"sourceEventSeqs":[161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202],"surfaceOp":"append"}
 {"type":"tool/call","seq":204,"time":1783352268415,"data":{"turn":1,"step":3,"callId":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}}
 {"type":"tool/result","seq":205,"time":1783352268429,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_00_Wo4H7tFNheZJWKVDrAHK5851"},"content":[{"type":"tool-result","toolCallId":"call_00_Wo4H7tFNheZJWKVDrAHK5851","content":[{"type":"text","text":"hello\n\nWORLD"}],"isError":false}],"role":"user","id":"da6aec98-d315-4a27-8bf2-5b4ce98a1e9a"}},"sourceEventSeqs":[204],"surfaceOp":"append"}
 {"type":"step/end","seq":206,"time":1783352268429,"data":{"turn":1,"step":3}}
@@ -52,6 +52,6 @@
 {"type":"assistant/chunk","seq":235,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
 {"type":"assistant/chunk","seq":236,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":219,"outputTokens":25,"cacheReadTokens":3072,"reasoningTokens":22}}}}
 {"type":"assistant/chunk","seq":237,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":238,"time":1783352269538,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file now has two lines:\n1. hello\n2. WORLD\n\nI can reply with DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"3ef63088-c1f2-486b-86de-3cf1543ba683"},"usage":{"inputTokens":219,"outputTokens":25,"cacheReadTokens":3072,"reasoningTokens":22}},"sourceEventSeqs":[208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237],"surfaceOp":"append"}
+{"type":"assistant/message","seq":238,"time":1783352269538,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file now has two lines:\n1. hello\n2. WORLD\n\nI can reply with DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3ef63088-c1f2-486b-86de-3cf1543ba683"},"usage":{"inputTokens":219,"outputTokens":25,"cacheReadTokens":3072,"reasoningTokens":22}},"sourceEventSeqs":[208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237],"surfaceOp":"append"}
 {"type":"step/end","seq":239,"time":1783352269538,"data":{"turn":1,"step":4}}
 {"type":"turn/end","seq":240,"time":1783352269539,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/web.cordis.snapshot.yml b/examples/acp-agent/web.cordis.snapshot.yml
index 015e67e221..f0da7617b0 100644
--- a/examples/acp-agent/web.cordis.snapshot.yml
+++ b/examples/acp-agent/web.cordis.snapshot.yml
@@ -24,7 +24,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/acp-agent/workspace-context.cordis.snapshot.yml b/examples/acp-agent/workspace-context.cordis.snapshot.yml
index fc47c24ae1..70d726c838 100644
--- a/examples/acp-agent/workspace-context.cordis.snapshot.yml
+++ b/examples/acp-agent/workspace-context.cordis.snapshot.yml
@@ -12,7 +12,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: 'none'
diff --git a/examples/acp-agent/workspace-context.cordis.yml b/examples/acp-agent/workspace-context.cordis.yml
index 5e3d4bc63e..34562e7324 100644
--- a/examples/acp-agent/workspace-context.cordis.yml
+++ b/examples/acp-agent/workspace-context.cordis.yml
@@ -9,7 +9,7 @@
       - id: acp-agent
         name: '@deepseek-ai/dsh-acp-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/headless-agent/advanced.cordis.snapshot.yml b/examples/headless-agent/advanced.cordis.snapshot.yml
index 1327e5a808..2cbdeb3698 100644
--- a/examples/headless-agent/advanced.cordis.snapshot.yml
+++ b/examples/headless-agent/advanced.cordis.snapshot.yml
@@ -18,7 +18,7 @@
       - id: cli-agent
         name: '@deepseek-ai/dsh-cli-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-flash
           persistenceRoot: './.sessions'
           # Replay fixtures are raw JSONL; the whole-config patch must restate
diff --git a/examples/headless-agent/advanced.cordis.yml b/examples/headless-agent/advanced.cordis.yml
index 84ee94b04e..a344e5e66a 100644
--- a/examples/headless-agent/advanced.cordis.yml
+++ b/examples/headless-agent/advanced.cordis.yml
@@ -7,7 +7,7 @@
       - id: cli-agent
         name: '@deepseek-ai/dsh-cli-demo'
         config:
-          provider: deepseek
+          provider: deepseek-official
           model: deepseek-v4-pro
           persistenceRoot: './.sessions'
           persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
diff --git a/examples/headless-agent/composition.md b/examples/headless-agent/composition.md
index 53a01260e1..38774195e1 100644
--- a/examples/headless-agent/composition.md
+++ b/examples/headless-agent/composition.md
@@ -8,6 +8,10 @@ The headless demo combines the real DeepSeek adapter and coding capabilities wit
 ```mermaid
 flowchart LR
   cfg["examples/headless-agent<br/>cordis.yml"]
+  plugin_headless_settings["settings<br/>@deepseek-ai/dsh-settings-local"]
+  cfg --> plugin_headless_settings
+  plugin_headless_credentials["credentials<br/>@deepseek-ai/dsh-credentials-local"]
+  cfg --> plugin_headless_credentials
   plugin_headless_llm_deepseek["llm-deepseek<br/>@deepseek-ai/dsh-llm-deepseek"]
   cfg --> plugin_headless_llm_deepseek
   plugin_headless_subprocess["subprocess<br/>@deepseek-ai/dsh-subprocess-local"]
@@ -55,6 +59,8 @@ flowchart LR
 
 | Plugin id | Package / module |
 | --- | --- |
+| `settings` | `@deepseek-ai/dsh-settings-local` |
+| `credentials` | `@deepseek-ai/dsh-credentials-local` |
 | `llm-deepseek` | `@deepseek-ai/dsh-llm-deepseek` |
 | `subprocess` | `@deepseek-ai/dsh-subprocess-local` |
 | `bash` | `@deepseek-ai/dsh-bash-local` |
diff --git a/examples/headless-agent/cordis.yml b/examples/headless-agent/cordis.yml
index 896c73469b..3a74bd4976 100644
--- a/examples/headless-agent/cordis.yml
+++ b/examples/headless-agent/cordis.yml
@@ -1,16 +1,28 @@
 # One-shot coding agent with format-pure stdout. The app bin loads the
-# gitignored root `.env`; this file reads `DEEPSEEK_API_KEY` and optional
-# `DEEPSEEK_BASE_URL` through `!!js`.
+# gitignored root `.env` into the process environment; entry configs here are
+# the composition base, while user-plane values resolve per request through
+# the two providers below.
+
+# User-settings document (`$DSH_HOME/settings.yaml`, hot-reloaded): a
+# `llm-deepseek:` section there overrides the adapter entry below without a
+# restart.
+- id: settings
+  name: '@deepseek-ai/dsh-settings-local'
+
+# Credential store: the live process environment over `$DSH_HOME/.env`
+# (owner-only file, hot-reloaded). The adapter resolves `DEEPSEEK_API_KEY`
+# through it at each request, so no key is inlined in this file.
+- id: credentials
+  name: '@deepseek-ai/dsh-credentials-local'
 
 # The DeepSeek adapter. Swap to '@deepseek-ai/dsh-llm-pi-ai' for the pi-ai-backed
-# twin (same config shape; `reasoning: high` replaces thinking/reasoningEffort).
-# Shipped default: full thinking at max effort on every request (wire-only
-# defaults; they never enter the request header).
+# twin (a `providers` dict keyed by route; `reasoning: high` replaces
+# thinking/reasoningEffort). Shipped default: full thinking at max effort on
+# every request. Exact-model resolution materializes request defaults before
+# the request header is logged.
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY
-    baseURL: !!js process.env.DEEPSEEK_BASE_URL
     thinking: enabled
     reasoningEffort: max
     models:
@@ -32,7 +44,7 @@
 - id: cli-agent
   name: '@deepseek-ai/dsh-cli-demo'
   config:
-    provider: deepseek
+    provider: deepseek-official
     # Stays on flash: the goal/ralph replay corpora were recorded on it, and
     # their nested-include overlays cannot re-pin the app config (a config
     # patch cannot target an entry behind a nested include).
diff --git a/examples/headless-agent/credentials.cordis.snapshot.yml b/examples/headless-agent/credentials.cordis.snapshot.yml
new file mode 100644
index 0000000000..3a8638089a
--- /dev/null
+++ b/examples/headless-agent/credentials.cordis.snapshot.yml
@@ -0,0 +1,18 @@
+# Keyless dynamic-configuration composition: the base settings and credentials
+# providers see only the isolated run home, no API key exists anywhere, and
+# the deepseek-official route still registers — so the prompt fails with the actionable
+# MISSING_CREDENTIAL guidance this snapshot pins as first-run UX.
+- id: base
+  name: '@cordisjs/plugin-include'
+  config:
+    path: ./cordis.yml
+    patches:
+      - id: llm-deepseek
+        name: '@deepseek-ai/dsh-llm-deepseek'
+        disabled: true
+      - insert:
+          # The endpoint is never dialed: credential resolution fails first.
+          - id: llm-deepseek-keyless
+            name: '@deepseek-ai/dsh-llm-deepseek'
+            config:
+              baseURL: 'http://127.0.0.1:9'
diff --git a/examples/headless-agent/tests/code-mode.e2e.ts b/examples/headless-agent/tests/code-mode.e2e.ts
index 092060ebe3..1f708ab601 100644
--- a/examples/headless-agent/tests/code-mode.e2e.ts
+++ b/examples/headless-agent/tests/code-mode.e2e.ts
@@ -312,7 +312,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('Code Mode: real model writes a p
   it('collapses the wire tool list to [run_code], bridges sub-calls, and returns curated output', async () => {
     workdir = await mkdtemp(join(tmpdir(), 'dsh-code-mode-e2e-'))
     ctx = await codeModeHarness(workdir)
-    const agent = ctx.agentLoop.create(SessionId('e2e-code-mode'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('e2e-code-mode'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({
       content: [{
@@ -364,7 +364,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('Code Mode: real model writes a p
     const handle = await ctx.agents.create({
       sessionId: SessionId('e2e-code-mode-workspace-session'),
       meta: { cwd: workdir },
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     })
 
     handle.agent.followup(createUserMessage({
diff --git a/examples/headless-agent/tests/coding-task.e2e.ts b/examples/headless-agent/tests/coding-task.e2e.ts
index e4a087a572..75b10ee2bc 100644
--- a/examples/headless-agent/tests/coding-task.e2e.ts
+++ b/examples/headless-agent/tests/coding-task.e2e.ts
@@ -55,7 +55,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('coding task: fix a failing test
     expect(before.status).not.toBe(0)
 
     ctx = await codingHarness(workdir, { persona: SYSTEM_PROMPT })
-    const agent = ctx.agentLoop.create(SessionId('e2e-task'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('e2e-task'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({
       content: [{
diff --git a/examples/headless-agent/tests/compaction.e2e.ts b/examples/headless-agent/tests/compaction.e2e.ts
index f0bb100a66..07f239a73e 100644
--- a/examples/headless-agent/tests/compaction.e2e.ts
+++ b/examples/headless-agent/tests/compaction.e2e.ts
@@ -45,7 +45,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('compaction: a long session compa
       },
       persistenceRoot: join(workdir, '.sessions'),
     })
-    const agent = ctx.agentLoop.create(SessionId('e2e-compaction'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('e2e-compaction'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({
       content: [{
diff --git a/examples/headless-agent/tests/fixtures/deepseek-defaults.cordis.yml b/examples/headless-agent/tests/fixtures/deepseek-defaults.cordis.yml
new file mode 100644
index 0000000000..cd472f737d
--- /dev/null
+++ b/examples/headless-agent/tests/fixtures/deepseek-defaults.cordis.yml
@@ -0,0 +1,17 @@
+- id: base
+  name: '@cordisjs/plugin-include'
+  config:
+    path: ../../cordis.yml
+    patches:
+      - id: llm-deepseek
+        config:
+          apiKey: snapshot-key
+          baseURL: !!js process.env.DSH_SNAPSHOT_BASE_URL
+          thinking: disabled
+      - id: cli-agent
+        config:
+          provider: deepseek-official
+          model: deepseek-v4-flash
+          persistenceRoot: './.sessions'
+          workspaceContext: false
+          persona: 'Keyless DeepSeek adapter defaults snapshot.'
diff --git a/examples/headless-agent/tests/fixtures/retry-snapshot-backend.mjs b/examples/headless-agent/tests/fixtures/retry-snapshot-backend.mjs
index 28dc4f5742..5a2fc5d128 100644
--- a/examples/headless-agent/tests/fixtures/retry-snapshot-backend.mjs
+++ b/examples/headless-agent/tests/fixtures/retry-snapshot-backend.mjs
@@ -49,5 +49,5 @@ export const inject = ['llm']
  * @param {import('cordis').Context} ctx - plugin context carrying the LLM service.
  */
 export function apply(ctx) {
-  ctx.llm.registerAdapter(['deepseek'], new RetrySnapshotAdapter())
+  ctx.llm.registerAdapter(['deepseek-official'], new RetrySnapshotAdapter())
 }
diff --git a/examples/headless-agent/tests/fixtures/semantic-checkpoint-agent.ts b/examples/headless-agent/tests/fixtures/semantic-checkpoint-agent.ts
index 58a1bedee9..ef7cf4bafe 100644
--- a/examples/headless-agent/tests/fixtures/semantic-checkpoint-agent.ts
+++ b/examples/headless-agent/tests/fixtures/semantic-checkpoint-agent.ts
@@ -19,7 +19,7 @@ export const inject = ['agents', 'agentLoop', 'sessionPersistence']
 export async function apply(ctx: Context): Promise<void> {
   const handle = await ctx.agents.resume({
     resumeSessionId: 'semantic-checkpoint-unknown-outcome' as SessionId,
-    agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
   })
   ctx.effect(() => () => handle.dispose(), 'semantic-checkpoint-agent.handle')
 }
diff --git a/examples/headless-agent/tests/fixtures/subagent-inheritance-agent.ts b/examples/headless-agent/tests/fixtures/subagent-inheritance-agent.ts
index bd8a7aa2f7..9cd3e6235f 100644
--- a/examples/headless-agent/tests/fixtures/subagent-inheritance-agent.ts
+++ b/examples/headless-agent/tests/fixtures/subagent-inheritance-agent.ts
@@ -19,7 +19,7 @@ export const inject = ['agents', 'agentLoop', 'sessionPersistence']
 export async function apply(ctx: Context): Promise<void> {
   const handle = await ctx.agents.resume({
     resumeSessionId: 'subagent-inheritance-parent' as SessionId,
-    agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
   })
   ctx.effect(() => () => handle.dispose(), 'subagent-inheritance-agent.handle')
 }
diff --git a/examples/headless-agent/tests/full-loop.e2e.ts b/examples/headless-agent/tests/full-loop.e2e.ts
index 9c5fce693b..f4bb8695c9 100644
--- a/examples/headless-agent/tests/full-loop.e2e.ts
+++ b/examples/headless-agent/tests/full-loop.e2e.ts
@@ -29,7 +29,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('full loop: real model + real bas
   it('runs a bash command on request and reports its output', async () => {
     workdir = await mkdtemp(join(tmpdir(), 'dsh-full-loop-e2e-'))
     ctx = await codingHarness(workdir, { persona: SYSTEM_PROMPT })
-    const agent = ctx.agentLoop.create(SessionId('e2e-loop'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('e2e-loop'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({ content: [{ type: 'text', text: 'Run `echo e2e-ok` with the bash tool and tell me its exact output.' }], source: { kind: 'user' } }))
     await waitForIdle(ctx, agent)
diff --git a/examples/headless-agent/tests/headless.snapshot.ts b/examples/headless-agent/tests/headless.snapshot.ts
index 2581d8a042..4217f24228 100644
--- a/examples/headless-agent/tests/headless.snapshot.ts
+++ b/examples/headless-agent/tests/headless.snapshot.ts
@@ -1,4 +1,6 @@
 import { readFile, readdir, writeFile } from 'node:fs/promises'
+import { createServer } from 'node:http'
+import type { IncomingMessage, ServerResponse } from 'node:http'
 import { delimiter, dirname, join } from 'node:path'
 import { fileURLToPath } from 'node:url'
 import {
@@ -27,11 +29,14 @@ const goalScenarioDir = join(snapshotsDir, 'goal-tools')
 const goalConfigPath = fileURLToPath(new URL('../goal.cordis.snapshot.yml', import.meta.url))
 const retryScenarioDir = join(snapshotsDir, 'provider-retry')
 const retryConfigPath = fileURLToPath(new URL('../retry.cordis.snapshot.yml', import.meta.url))
+const credentialsScenarioDir = join(snapshotsDir, 'missing-credential')
+const credentialsConfigPath = fileURLToPath(new URL('../credentials.cordis.snapshot.yml', import.meta.url))
 const ralphScenarioDir = join(snapshotsDir, 'ralph-loop')
 const ralphConfigPath = fileURLToPath(new URL('../ralph.cordis.snapshot.yml', import.meta.url))
 const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
 const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
 const reasoningConfigPath = fileURLToPath(new URL('./fixtures/cli.cordis.yml', import.meta.url))
+const deepseekDefaultsConfigPath = fileURLToPath(new URL('./fixtures/deepseek-defaults.cordis.yml', import.meta.url))
 const refreshing = process.env.DSH_SNAPSHOT === 'refresh'
 
 interface JsonObject {
@@ -43,6 +48,40 @@ interface PersistedLog {
   readonly header: JsonObject
 }
 
+interface DeepSeekDefaultsServer {
+  readonly url: string
+  readonly requests: JsonObject[]
+  close(): Promise<void>
+}
+
+/** Serve one deterministic DeepSeek-compatible response while retaining its request body. */
+async function deepseekDefaultsServer(): Promise<DeepSeekDefaultsServer> {
+  const requests: JsonObject[] = []
+  const server = createServer((request: IncomingMessage, response: ServerResponse) => {
+    let body = ''
+    request.setEncoding('utf8')
+    request.on('data', (chunk: string) => { body += chunk })
+    request.on('end', () => {
+      requests.push(JSON.parse(body) as JsonObject)
+      response.writeHead(200, { 'content-type': 'text/event-stream' })
+      response.end([
+        'data: {"choices":[{"delta":{"content":"DEFAULTS_OK"}}]}',
+        'data: {"choices":[{"delta":{},"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
+        'data: [DONE]',
+        '',
+      ].join('\n\n'))
+    })
+  })
+  await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('DeepSeek defaults snapshot server has no port')
+  return {
+    url: `http://127.0.0.1:${address.port}`,
+    requests,
+    close: () => new Promise(resolve => server.close(() => { resolve() })),
+  }
+}
+
 function parseJsonl(content: string): JsonObject[] {
   return content.split('\n')
     .filter(line => line.trim().length > 0)
@@ -151,7 +190,7 @@ describe('headless stream-json snapshots', () => {
         const retries = records.filter(record => record.type === 'llm/retry')
         expect(retries).toHaveLength(1)
         expect(retries[0]?.data).toMatchObject({
-          provider: 'deepseek',
+          provider: 'deepseek-official',
           mode: 'normal',
           policyKey: '["normal",1,["RATE_LIMIT"],1,1,0]',
           retry: 1,
@@ -168,6 +207,40 @@ describe('headless stream-json snapshots', () => {
     expect(normalized).toBe(await readFile(streamExpected, 'utf8'))
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 
+  it('surfaces actionable missing-credential guidance through the one-shot app', async () => {
+    const streamExpected = join(credentialsScenarioDir, 'stream-json.expected.jsonl')
+    let runCwd = ''
+    const result = await runLoaderSmoke({
+      label: 'missing-credential headless stream-json snapshot',
+      tempDirPrefix: 'headless-snapshot-missing-credential-',
+      binScript,
+      configPath: credentialsConfigPath,
+      binArgs: ['--config', credentialsConfigPath, '--output-format', 'stream-json', 'say pong'],
+      tsconfigPath,
+      env: {
+        // First-run posture: no key in the environment, none under ./.dsh.
+        DEEPSEEK_API_KEY: '',
+        DEEPSEEK_BASE_URL: '',
+        NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
+      },
+      // The designed failure surface: the one-shot app reports the failed turn.
+      expectedExitCode: 1,
+      prepare: (cwd) => { runCwd = cwd },
+    })
+
+    // The guidance leads with the credential store — the path that keeps the
+    // secret out of configuration files — and offers a literal key last.
+    expect(result.stderr).toBe(
+      'dsh-cli-demo: turn 1 failed at step 1: llm-deepseek: no API key for provider route "deepseek-official";'
+      + ' store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it),'
+      + ' export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal'
+      + ' "apiKey" in the llm-deepseek settings section\n',
+    )
+    const normalized = normalizeHeadlessStream(result.stdout, runCwd)
+    if (refreshing) await writeFile(streamExpected, normalized)
+    expect(normalized).toBe(await readFile(streamExpected, 'utf8'))
+  }, LOADER_SMOKE_TEST_TIMEOUT_MS)
+
   it('logs the model default and a dynamic next-step reasoning effort', async () => {
     const result = await runLoaderSmoke({
       label: 'reasoning effort headless stream-json snapshot',
@@ -208,6 +281,57 @@ describe('headless stream-json snapshots', () => {
     `)
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 
+  it('logs and sends the DeepSeek adapter maxTokens default through the one-shot app', async () => {
+    const server = await deepseekDefaultsServer()
+    try {
+      const result = await runLoaderSmoke({
+        label: 'DeepSeek adapter defaults headless stream-json snapshot',
+        tempDirPrefix: 'headless-snapshot-deepseek-defaults-',
+        binScript,
+        configPath: deepseekDefaultsConfigPath,
+        binArgs: [
+          '--config',
+          deepseekDefaultsConfigPath,
+          '--output-format',
+          'stream-json',
+          'return the deterministic response',
+        ],
+        tsconfigPath,
+        env: {
+          DSH_SNAPSHOT_BASE_URL: server.url,
+          NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
+        },
+      })
+
+      expect(result.stderr).toBe('')
+      expect(server.requests).toHaveLength(1)
+      expect(server.requests[0]?.max_tokens).toBe(256_000)
+      const header = (parseJsonl(result.stdout)
+        .map(record => record.event)
+        .find((event): event is JsonObject => (
+          event !== null
+          && typeof event === 'object'
+          && !Array.isArray(event)
+          && 'type' in event
+          && event.type === 'request/header'
+        ))?.data as JsonObject | undefined)?.header as JsonObject | undefined
+      expect(header?.config).toMatchInlineSnapshot(`
+        {
+          "maxTokens": 256000,
+          "model": "deepseek-v4-flash",
+          "provider": "deepseek-official",
+          "reasoningEffort": "off",
+        }
+      `)
+      expect(header?.adapterDefaults).toEqual({
+        maxTokens: true,
+        reasoningEffort: true,
+      })
+    } finally {
+      await server.close()
+    }
+  }, LOADER_SMOKE_TEST_TIMEOUT_MS)
+
   it('replays the advanced toolchain through the one-shot app', async () => {
     const prompt = await scenarioPrompt(advancedScenarioDir, 'advanced-toolchain')
     const fixtureFiles = [
diff --git a/examples/headless-agent/tests/resume.e2e.ts b/examples/headless-agent/tests/resume.e2e.ts
index f38ebabae3..3875a157d8 100644
--- a/examples/headless-agent/tests/resume.e2e.ts
+++ b/examples/headless-agent/tests/resume.e2e.ts
@@ -40,7 +40,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('resume: continue a persisted ses
     ctx = await codingHarness(process.cwd(), { persona: SYSTEM_PROMPT, persistenceRoot: root })
     const first = (await ctx.agents.create({
       sessionId: SESSION_ID,
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     })).agent
     first.followup(createUserMessage({ content: [{ type: 'text', text: `Remember this code for later: ${SECRET}. Just acknowledge it.` }], source: { kind: 'user' } }))
     await waitForIdle(ctx, first)
@@ -53,7 +53,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('resume: continue a persisted ses
     ctx = await codingHarness(process.cwd(), { persona: SYSTEM_PROMPT, persistenceRoot: root })
     const resumed = (await ctx.agents.resume({
       resumeSessionId: SESSION_ID,
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     })).agent
     expect(resumed.session.id).toBe(SESSION_ID)
     // The prior user turn is in the rehydrated log before the model is asked.
diff --git a/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl b/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
index 85e60621e0..e3d3d0d3f8 100644
--- a/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
+++ b/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
@@ -2,7 +2,7 @@
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Perform one side-effecting remote mutation."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"step/start","seq":2,"time":0,"data":{"turn":1,"step":1}}
-{"type":"assistant/message","seq":3,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"unknown-outcome-call","name":"write_remote","arguments":"{\"value\":1}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"surfaceOp":"append"}
+{"type":"assistant/message","seq":3,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"unknown-outcome-call","name":"write_remote","arguments":"{\"value\":1}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"surfaceOp":"append"}
 {"type":"tool/call","seq":4,"time":0,"data":{"turn":1,"step":1,"callId":"unknown-outcome-call","name":"write_remote","arguments":"{\"value\":1}"}}
 {"type":"tool/result","seq":5,"time":0,"data":{"turn":1,"step":1,"message":{"id":"interrupted-tool-result-unknown-outcome-call-5","role":"user","source":{"kind":"tool","callId":"unknown-outcome-call"},"content":[{"type":"tool-result","toolCallId":"unknown-outcome-call","isError":true,"content":[{"type":"text","text":"The tool call was interrupted after it was recorded, but no result was durably recorded. Its outcome is unknown. Decide whether to retry from the tool semantics: retry only if the operation is read-only or idempotent; if it may have side effects, first verify external state or ask the user. Do not retry blindly."}]}]},"error":{"name":"ToolOutcomeUnknownError","code":"TOOL_OUTCOME_UNKNOWN"}},"surfaceOp":"append","sourceEventSeqs":[4]}
 {"type":"step/end","seq":6,"time":0,"data":{"turn":1,"step":1}}
@@ -12,11 +12,11 @@
 {"type":"user/message","seq":10,"time":0,"data":{"content":[{"type":"text","text":"Continue safely from the interrupted operation."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":11,"time":0,"data":{"title":"Perform one side-effecting remote mutati","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":12,"time":0,"data":{"turn":2,"step":1}}
-{"type":"request/header","seq":13,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":13,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}
 {"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}}
 {"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":18,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"sourceEventSeqs":[14,15,16,17],"surfaceOp":"append"}
+{"type":"assistant/message","seq":18,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"sourceEventSeqs":[14,15,16,17],"surfaceOp":"append"}
 {"type":"step/end","seq":19,"time":0,"data":{"turn":2,"step":1}}
 {"type":"turn/end","seq":20,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/semantic-checkpoint.snapshot.ts b/examples/headless-agent/tests/semantic-checkpoint.snapshot.ts
index 6c5c7a5404..92ce72f4e7 100644
--- a/examples/headless-agent/tests/semantic-checkpoint.snapshot.ts
+++ b/examples/headless-agent/tests/semantic-checkpoint.snapshot.ts
@@ -49,7 +49,7 @@ async function seedInterruptedSession(root: string, cwd: string): Promise<string
           content: [{ type: 'tool-call', id: CallId('unknown-outcome-call'), name: 'write_remote', arguments: '{"value":1}' }],
           source: {
             kind: 'model',
-            ...{ provider: 'deepseek', model: 'deepseek-v4-flash' },
+            ...{ provider: 'deepseek-official', model: 'deepseek-v4-flash' },
           },
         }),
       },
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
index f412b843ee..d19a962e48 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
@@ -3,12 +3,12 @@
 {"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"b07a1eeb-2060-44e5-87d3-05d315a4a74b"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884563,"data":{"title":"Reply with exactly DIRECT_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884564,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950001005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":6,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"DIRECT_CHILD_OK"}}}
 {"type":"assistant/chunk","seq":7,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DIRECT_CHILD_OK"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884564,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c7bcc77c-c6e5-425f-ac11-76ece69d31d5"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884564,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c7bcc77c-c6e5-425f-ac11-76ece69d31d5"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"step/end","seq":11,"time":1783957884564,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":12,"time":1783957884564,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
index 370ee495cb..7bf0f35750 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
@@ -3,12 +3,12 @@
 {"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"1d565b63-5689-4c09-9686-abd3ee379e28"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884700,"data":{"title":"Reply with exactly WORKFLOW_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884700,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950002005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
 {"type":"assistant/chunk","seq":6,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"WORKFLOW_CHILD_OK"}}}
 {"type":"assistant/chunk","seq":7,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"WORKFLOW_CHILD_OK"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884701,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"df4055a4-c1cc-4248-940d-f7fa937e2d39"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884701,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"df4055a4-c1cc-4248-940d-f7fa937e2d39"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"step/end","seq":11,"time":1783957884701,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":12,"time":1783957884701,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
index c0d6ce1b4b..3f991a88a4 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"},"role":"user","id":"0dda35fe-e148-4400-b837-2f6e6fe40ae6"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884479,"data":{"title":"Run this advanced flow exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884486,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record<string, JsonValue>;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record<string, JsonValue>;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record<string, JsonValue>;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record<string, JsonValue>;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record<string, JsonValue>;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record<string, JsonValue>;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record<string, JsonValue>;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record<string, JsonValue>;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record<string, JsonValue>;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record<string, JsonValue>;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record<string, JsonValue>;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record<string, JsonValue>;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record<string, JsonValue>)[];\n    } & Record<string, JsonValue>;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record<string, JsonValue>;\n  } & Record<string, JsonValue>;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record<string, JsonValue>;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1783950000005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1783950000006,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1783950000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":1783950000008,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1783950000009,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"8154d000-72ae-43cd-8233-525499a74fa2"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"8154d000-72ae-43cd-8233-525499a74fa2"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1783957884487,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
 {"type":"tool/result","seq":12,"time":1783957884488,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"advanced-mount"},"content":[{"type":"tool-result","toolCallId":"advanced-mount","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-marker\"; available until unmounted or DSH restarts)."}],"isError":false}],"role":"user","id":"5c8a1996-3b9e-4713-9fa5-7537e04be25d"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":1783957884489,"data":{"turn":1,"step":1}}
@@ -19,7 +19,7 @@
 {"type":"assistant/chunk","seq":17,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}}
 {"type":"assistant/chunk","seq":18,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":19,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"dce3f78e-82ce-4be9-a929-d4dfc2afdca9"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
+{"type":"assistant/message","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"dce3f78e-82ce-4be9-a929-d4dfc2afdca9"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"tool/call","seq":21,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}
 {"type":"tool/code-dispatch-start","seq":22,"time":1785037378911,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"}}}
 {"type":"tool/code-dispatch","seq":23,"time":1785037378912,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"},"isError":false,"content":[{"type":"text","text":"## Temporary Plugins\n- Temporary Plugin dyn-1: snapshot-marker [running] — provides: none; waiting for: none; lifetime: until unmounted or DSH restarts"}]}}
@@ -31,7 +31,7 @@
 {"type":"assistant/chunk","seq":29,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
 {"type":"assistant/chunk","seq":30,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":31,"time":1785037378923,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":32,"time":1785037378923,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"2bc5d384-b16a-4e15-ac9a-0134ebd0b4f5"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
+{"type":"assistant/message","seq":32,"time":1785037378923,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"2bc5d384-b16a-4e15-ac9a-0134ebd0b4f5"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
 {"type":"tool/call","seq":33,"time":1785037378923,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
 {"type":"tool/result","seq":34,"time":1785037378941,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"advanced-direct-child"},"content":[{"type":"tool-result","toolCallId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false}],"role":"user","id":"f7ad67fc-3ccd-4ead-8d1d-60dbe062cc4f"}},"sourceEventSeqs":[33],"surfaceOp":"append"}
 {"type":"step/end","seq":35,"time":1785037378941,"data":{"turn":1,"step":3}}
@@ -41,7 +41,7 @@
 {"type":"assistant/chunk","seq":39,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}
 {"type":"assistant/chunk","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":41,"time":1785037378946,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":42,"time":1785037378946,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"70e1b4ca-8066-4207-afb0-3e4c1094d5c0"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
+{"type":"assistant/message","seq":42,"time":1785037378946,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"70e1b4ca-8066-4207-afb0-3e4c1094d5c0"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
 {"type":"tool/call","seq":43,"time":1785037378946,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}
 {"type":"tool/result","seq":44,"time":1785037379528,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"advanced-workflow"},"content":[{"type":"tool-result","toolCallId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false}],"role":"user","id":"16cd6399-e459-4640-b404-5c1ae11b0e96"}},"sourceEventSeqs":[43],"surfaceOp":"append"}
 {"type":"step/end","seq":45,"time":1785037379529,"data":{"turn":1,"step":4}}
@@ -51,7 +51,7 @@
 {"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
 {"type":"assistant/chunk","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":51,"time":1785037379534,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":52,"time":1785037379534,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"1054b764-bda9-4cfd-a596-4c2fe696aca0"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
+{"type":"assistant/message","seq":52,"time":1785037379534,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1054b764-bda9-4cfd-a596-4c2fe696aca0"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
 {"type":"tool/call","seq":53,"time":1785037379534,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
 {"type":"tool/result","seq":54,"time":1785037379535,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"advanced-unmount"},"content":[{"type":"tool-result","toolCallId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"89c34a0b-cfc8-4652-a4ad-4fdb3d18f323"}},"sourceEventSeqs":[53],"surfaceOp":"append"}
 {"type":"step/end","seq":55,"time":1785037379536,"data":{"turn":1,"step":5}}
@@ -61,6 +61,6 @@
 {"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_HEADLESS_OK"}}}}
 {"type":"assistant/chunk","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":61,"time":1785037379541,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":62,"time":1785037379541,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c2f3fc41-dc37-4f2d-9c27-348f8cac3eac"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
+{"type":"assistant/message","seq":62,"time":1785037379541,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c2f3fc41-dc37-4f2d-9c27-348f8cac3eac"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
 {"type":"step/end","seq":63,"time":1785037379542,"data":{"turn":1,"step":6}}
 {"type":"turn/end","seq":64,"time":1785037379542,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
index 1305c96ed3..5a1e8b00ea 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
@@ -2,13 +2,13 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Run this advanced flow exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"advanced-mount"},"content":[{"type":"tool-result","toolCallId":"advanced-mount","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-marker\"; available until unmounted or DSH restarts)."}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[11],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
@@ -18,7 +18,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/code-dispatch-start","seq":22,"time":0,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/code-dispatch","seq":23,"time":0,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"},"isError":false,"content":[{"type":"text","text":"## Temporary Plugins\n- Temporary Plugin dyn-1: snapshot-marker [running] — provides: none; waiting for: none; lifetime: until unmounted or DSH restarts"}]}}}
@@ -30,7 +30,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":31,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":32,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":32,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":33,"time":0,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":34,"time":0,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"advanced-direct-child"},"content":[{"type":"tool-result","toolCallId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[33],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":35,"time":0,"data":{"turn":1,"step":3}}}
@@ -40,7 +40,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":41,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":42,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":42,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":43,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":44,"time":0,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"advanced-workflow"},"content":[{"type":"tool-result","toolCallId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[43],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":45,"time":0,"data":{"turn":1,"step":4}}}
@@ -50,7 +50,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":50,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":51,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":52,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":52,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":53,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":54,"time":0,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"advanced-unmount"},"content":[{"type":"tool-result","toolCallId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[53],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":55,"time":0,"data":{"turn":1,"step":5}}}
@@ -60,7 +60,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_HEADLESS_OK"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":60,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":61,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":62,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":62,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":63,"time":0,"data":{"turn":1,"step":6}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":64,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"ADVANCED_HEADLESS_OK","reason":{"kind":"completed"},"usage":{"inputTokens":18,"outputTokens":18}}
diff --git a/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl
index c6ab99a85e..8efcfc3bae 100644
--- a/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl
@@ -2,13 +2,13 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Probe strict-schema fillers against missing-goal revision 1, then create a durable goal to finish the snapshot proof and inspect it."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Probe strict-schema fillers against miss","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_probe","name":"update_goal","argumentsDelta":"{\"goal_id\":\"missing-goal\",\"revision\":1,\"action\":\"pause\",\"objective\":\"\",\"max_goal_rounds\":0,\"blocked_reason\":\"\"}"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_probe","name":"update_goal","arguments":"{\"goal_id\":\"missing-goal\",\"revision\":1,\"action\":\"pause\",\"objective\":\"\",\"max_goal_rounds\":0,\"blocked_reason\":\"\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":15,"outputTokens":6}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_probe","name":"update_goal","arguments":"{\"goal_id\":\"missing-goal\",\"revision\":1,\"action\":\"pause\",\"objective\":\"\",\"max_goal_rounds\":0,\"blocked_reason\":\"\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":15,"outputTokens":6}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_probe","name":"update_goal","arguments":"{\"goal_id\":\"missing-goal\",\"revision\":1,\"action\":\"pause\",\"objective\":\"\",\"max_goal_rounds\":0,\"blocked_reason\":\"\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":15,"outputTokens":6}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_probe","name":"update_goal","arguments":"{\"goal_id\":\"missing-goal\",\"revision\":1,\"action\":\"pause\",\"objective\":\"\",\"max_goal_rounds\":0,\"blocked_reason\":\"\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_goal_probe"},"content":[{"type":"tool-result","toolCallId":"call_goal_probe","content":[{"type":"text","text":"Error: no current goal"}],"isError":true}],"role":"user","id":"{{sessionId}}"},"error":{"name":"GoalError","code":"GOAL_NOT_FOUND"}},"sourceEventSeqs":[11],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
@@ -18,7 +18,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_goal_create"},"content":[{"type":"tool-result","toolCallId":"call_goal_create","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":7},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[21],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":23,"time":0,"data":{"content":[{"type":"text","text":"<goal_state>{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"maxGoalRounds\":7},\"roundsStarted\":0,\"createdAt\":0,\"updatedAt\":0}</goal_state>"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":0,"change":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-{{sessionId}}","revision":1,"objective":"Finish the headless goal-tool snapshot proof","phase":"active","maxGoalRounds":7},"roundsStarted":0,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
@@ -29,7 +29,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":32,"time":0,"data":{"turn":1,"step":3,"callId":"call_goal_get","name":"get_goal","arguments":"{}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":33,"time":0,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_goal_get"},"content":[{"type":"tool-result","toolCallId":"call_goal_get","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":7},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[32],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":34,"time":0,"data":{"turn":1,"step":3}}}
@@ -39,7 +39,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":41,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[36,37,38,39,40],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":41,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[36,37,38,39,40],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":42,"time":0,"data":{"turn":1,"step":4}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":43,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"GOAL READY","reason":{"kind":"completed"},"usage":{"inputTokens":100,"outputTokens":20}}
diff --git a/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl
new file mode 100644
index 0000000000..4098de697b
--- /dev/null
+++ b/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl
@@ -0,0 +1,8 @@
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"say pong"}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"say pong","messageSeqs":[1],"source":{"kind":"fallback"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","maxTokens":256000,"reasoningEffort":"high"},"adapterDefaults":{"reasoningEffort":true,"maxTokens":true},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":5,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":6,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"llm-deepseek: no API key for provider route \"deepseek-official\"; store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it), export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal \"apiKey\" in the llm-deepseek settings section","code":"MISSING_CREDENTIAL"}}}}}
+{"type":"result","success":false,"sessionId":"{{sessionId}}","turn":1,"result":"","reason":{"kind":"error","step":1,"failure":{"message":"llm-deepseek: no API key for provider route \"deepseek-official\"; store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it), export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal \"apiKey\" in the llm-deepseek settings section","code":"MISSING_CREDENTIAL"}}}
diff --git a/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
index f44636323b..08c751e319 100644
--- a/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
@@ -2,9 +2,9 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"retry the transient provider failure"}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"retry the transient provider failure","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":5,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"llm/retry","seq":6,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek","mode":"normal","policyKey":"[\"normal\",1,[\"RATE_LIMIT\"],1,1,0]","retry":1,"maxRetries":1,"delayMs":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"llm/retry","seq":6,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek-official","mode":"normal","policyKey":"[\"normal\",1,[\"RATE_LIMIT\"],1,1,0]","retry":1,"maxRetries":1,"delayMs":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":7,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":8,"time":0,"data":{"turn":2,"trigger":{"kind":"retry"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":9,"time":0,"data":{"turn":2,"step":1}}}
@@ -13,7 +13,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"RETRY_OK"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":4,"outputTokens":2}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"RETRY_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":4,"outputTokens":2}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"RETRY_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":4,"outputTokens":2}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":16,"time":0,"data":{"turn":2,"step":1}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":17,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":2,"result":"RETRY_OK","reason":{"kind":"completed"},"usage":{"inputTokens":4,"outputTokens":2}}
diff --git a/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl b/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
index cda0e3e2f6..efcf733281 100644
--- a/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
+++ b/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Exercise the six PTY tools in order, including one missing-session signal error, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"8cc78530-3ead-4c68-a38f-dcc14d6a2a82"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Exercise the six PTY tools","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model.\n\nVerify your work by running the code or tests. Keep answers brief and\nfactual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nUse a terminal session only when work needs persistent terminal state or interactive stdin; prefer bash/read/write/edit for bounded one-shot operations. Track every terminal session id and close sessions that no longer matter. An inferred_idle or timeout result does not prove the foreground command exited.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"terminal_close","description":"Close one persistent terminal and wait until its captured owned process tree is gone.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."}},"required":["sessionId"]}},{"name":"terminal_list","description":"List persistent terminal sessions owned by the current agent.","parameters":{"type":"object","properties":{}}},{"name":"terminal_open","description":"Create a persistent, owner-isolated terminal session from a registered backend type. Use this for shell or REPL state that must survive across tool calls.","parameters":{"type":"object","properties":{"type":{"type":"string","description":"Registered terminal backend type, usually \"shell\"."},"name":{"type":"string","description":"Optional owner-local display name such as \"main\" or \"gdb\"."},"cwd":{"type":"string","description":"Initial working directory. Defaults to the deployment workspace root."}},"required":["type"]}},{"name":"terminal_read","description":"Read a bounded page of retained output from a persistent terminal without sending input.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"offset":{"type":"number","description":"Newest-relative line offset (default 0)."},"count":{"type":"number","description":"Requested line count (default 500; backend caps apply)."}},"required":["sessionId"]}},{"name":"terminal_send","description":"Send text to a persistent terminal. By default Enter is submitted and the call waits for a prompt, stdin wait, output silence, timeout, or session exit. Background mode returns a task id for task_output/task_kill.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id returned by terminal_open or terminal_list."},"text":{"type":"string","description":"UTF-8 text to write to the terminal."},"submit":{"type":"boolean","description":"Submit Enter after text (default true). Set false for control characters or incomplete REPL input."},"run_in_background":{"type":"boolean","description":"Return a task id immediately; collect with task_output or stop with task_kill."}},"required":["sessionId","text"]}},{"name":"terminal_signal","description":"Send an allowed signal to the current foreground process group of a persistent terminal.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"signal":{"type":"string","description":"Signal to deliver. Shell-targeted SIGKILL is rejected; use terminal_close.","enum":["SIGINT","SIGTERM","SIGKILL","SIGTSTP","SIGHUP"]}},"required":["sessionId","signal"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model.\n\nVerify your work by running the code or tests. Keep answers brief and\nfactual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nUse a terminal session only when work needs persistent terminal state or interactive stdin; prefer bash/read/write/edit for bounded one-shot operations. Track every terminal session id and close sessions that no longer matter. An inferred_idle or timeout result does not prove the foreground command exited.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"terminal_close","description":"Close one persistent terminal and wait until its captured owned process tree is gone.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."}},"required":["sessionId"]}},{"name":"terminal_list","description":"List persistent terminal sessions owned by the current agent.","parameters":{"type":"object","properties":{}}},{"name":"terminal_open","description":"Create a persistent, owner-isolated terminal session from a registered backend type. Use this for shell or REPL state that must survive across tool calls.","parameters":{"type":"object","properties":{"type":{"type":"string","description":"Registered terminal backend type, usually \"shell\"."},"name":{"type":"string","description":"Optional owner-local display name such as \"main\" or \"gdb\"."},"cwd":{"type":"string","description":"Initial working directory. Defaults to the deployment workspace root."}},"required":["type"]}},{"name":"terminal_read","description":"Read a bounded page of retained output from a persistent terminal without sending input.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"offset":{"type":"number","description":"Newest-relative line offset (default 0)."},"count":{"type":"number","description":"Requested line count (default 500; backend caps apply)."}},"required":["sessionId"]}},{"name":"terminal_send","description":"Send text to a persistent terminal. By default Enter is submitted and the call waits for a prompt, stdin wait, output silence, timeout, or session exit. Background mode returns a task id for task_output/task_kill.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id returned by terminal_open or terminal_list."},"text":{"type":"string","description":"UTF-8 text to write to the terminal."},"submit":{"type":"boolean","description":"Submit Enter after text (default true). Set false for control characters or incomplete REPL input."},"run_in_background":{"type":"boolean","description":"Return a task id immediately; collect with task_output or stop with task_kill."}},"required":["sessionId","text"]}},{"name":"terminal_signal","description":"Send an allowed signal to the current foreground process group of a persistent terminal.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"signal":{"type":"string","description":"Signal to deliver. Shell-targeted SIGKILL is rejected; use terminal_close.","enum":["SIGINT","SIGTERM","SIGKILL","SIGTSTP","SIGHUP"]}},"required":["sessionId","signal"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return <value>` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return <json-value>`)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-spawn","name":"terminal_open","argumentsDelta":"{\"type\":\"shell\",\"name\":\"main\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"76b65028-59da-48b0-8204-147858343eae"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"76b65028-59da-48b0-8204-147858343eae"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}
 {"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"pty-spawn"},"content":[{"type":"tool-result","toolCallId":"pty-spawn","content":[{"type":"text","text":"started terminal session pty-1 (main) [type: shell]\ndsh> "}],"isError":false}],"role":"user","id":"5c37c00f-e768-41a6-8f5e-9366ddc4d458"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
 {"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}
@@ -19,7 +19,7 @@
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@@ -29,7 +29,7 @@
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+{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"d0f78fba-456b-4823-83e8-dedbc203b650"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
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@@ -39,7 +39,7 @@
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@@ -49,7 +49,7 @@
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@@ -59,7 +59,7 @@
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@@ -69,6 +69,6 @@
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diff --git a/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
index f99356c9d1..3e8dd6da97 100644
--- a/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
@@ -2,13 +2,13 @@
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@@ -18,7 +18,7 @@
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@@ -28,7 +28,7 @@
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@@ -38,7 +38,7 @@
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+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":40,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":41,"time":0,"data":{"turn":1,"step":4,"callId":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":42,"time":0,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"pty-signal"},"content":[{"type":"tool-result","toolCallId":"pty-signal","content":[{"type":"text","text":"Error: unknown PTY session pty-missing"}],"isError":true}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[41],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":43,"time":0,"data":{"turn":1,"step":4}}}
@@ -48,7 +48,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":51,"time":0,"data":{"turn":1,"step":5,"callId":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":52,"time":0,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"pty-kill"},"content":[{"type":"tool-result","toolCallId":"pty-kill","content":[{"type":"text","text":"closed terminal session pty-1"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[51],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":53,"time":0,"data":{"turn":1,"step":5}}}
@@ -58,7 +58,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":61,"time":0,"data":{"turn":1,"step":6,"callId":"pty-list","name":"terminal_list","arguments":"{}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":62,"time":0,"data":{"turn":1,"step":6,"message":{"source":{"kind":"tool","callId":"pty-list"},"content":[{"type":"tool-result","toolCallId":"pty-list","content":[{"type":"text","text":"(no terminal sessions)"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[61],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":63,"time":0,"data":{"turn":1,"step":6}}}
@@ -68,7 +68,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":67,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":68,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":69,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":71,"time":0,"data":{"turn":1,"step":7}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":72,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"DONE","reason":{"kind":"completed"},"usage":{"inputTokens":70,"outputTokens":33}}
diff --git a/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
index 1e4a370a79..2a03b1f30c 100644
--- a/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
@@ -2,13 +2,13 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run a two-round fresh-agent Ralph loop to prove the shipped headless integration."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Run a two-round fresh-agent Ralph","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_ralph","name":"ralph","argumentsDelta":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_ralph"},"content":[{"type":"tool-result","toolCallId":"call_ralph","content":[{"type":"text","text":"Ralph worker reported completion after 2 rounds.\nFinal report:\n{\n  \"status\": \"complete\",\n  \"summary\": \"The Ralph snapshot objective is complete.\",\n  \"evidence\": [\n    \"Two fresh rounds completed through the shipped app.\"\n  ],\n  \"nextSteps\": [],\n  \"blocker\": \"\"\n}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[11],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
@@ -18,7 +18,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"RALPH SNAPSHOT COMPLETE"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"RALPH SNAPSHOT COMPLETE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"RALPH SNAPSHOT COMPLETE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":21,"time":0,"data":{"turn":1,"step":2}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":22,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"RALPH SNAPSHOT COMPLETE","reason":{"kind":"completed"},"usage":{"inputTokens":50,"outputTokens":12}}
diff --git a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
index 59a93af0f6..131428ab32 100644
--- a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
+++ b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
@@ -4,13 +4,13 @@
 {"type":"user/message","seq":2,"time":0,"data":{"content":[{"type":"text","text":"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":3,"time":0,"data":{"title":"Use the write tool exactly","messageSeqs":[2],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":4,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":5,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":5,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"child-write","name":"write","argumentsDelta":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}
 {"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}}
 {"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":11,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
+{"type":"assistant/message","seq":11,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
 {"type":"tool/call","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}
 {"type":"tool/result","seq":13,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"child-write"},"content":[{"type":"tool-result","toolCallId":"child-write","content":[{"type":"text","text":"Error: [sandbox: file access denied under read-only mode]\n[sandbox: escalation available — retry this exact operation once with sandbox_permissions (the narrowest wider mode that suffices) + justification; the approval prompt asks the user]"}],"isError":true}],"role":"user","id":"{{sessionId}}"},"error":{"name":"FsError","code":"FS_SANDBOX_DENIED"}},"sourceEventSeqs":[12],"surfaceOp":"append"}
 {"type":"step/end","seq":14,"time":0,"data":{"turn":1,"step":1}}
@@ -20,6 +20,6 @@
 {"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}}}}
 {"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
+{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
 {"type":"step/end","seq":22,"time":0,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":23,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
index 796f41aee8..72dc3056c3 100644
--- a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
+++ b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
@@ -8,13 +8,13 @@
 {"type":"user/message","seq":6,"time":0,"data":{"content":[{"type":"text","text":"Delegate the write probe to a subagent."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":7,"time":0,"data":{"title":"Tighten this session to read-only.","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":8,"time":0,"data":{"turn":2,"step":1}}
-{"type":"request/header","seq":9,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":9,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"delegate-write","name":"subagent","argumentsDelta":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}
 {"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}}
 {"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}
+{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}
 {"type":"tool/call","seq":16,"time":0,"data":{"turn":2,"step":1,"callId":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}
 {"type":"tool/result","seq":17,"time":0,"data":{"turn":2,"step":1,"message":{"source":{"kind":"tool","callId":"delegate-write"},"content":[{"type":"tool-result","toolCallId":"delegate-write","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[16],"surfaceOp":"append"}
 {"type":"step/end","seq":18,"time":0,"data":{"turn":2,"step":1}}
@@ -24,6 +24,6 @@
 {"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}}}}
 {"type":"assistant/chunk","seq":23,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
 {"type":"assistant/chunk","seq":24,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":25,"time":0,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[20,21,22,23,24],"surfaceOp":"append"}
+{"type":"assistant/message","seq":25,"time":0,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[20,21,22,23,24],"surfaceOp":"append"}
 {"type":"step/end","seq":26,"time":0,"data":{"turn":2,"step":2}}
 {"type":"turn/end","seq":27,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/todo-write.e2e.ts b/examples/headless-agent/tests/todo-write.e2e.ts
index b1fbba7c7d..246857ec47 100644
--- a/examples/headless-agent/tests/todo-write.e2e.ts
+++ b/examples/headless-agent/tests/todo-write.e2e.ts
@@ -27,7 +27,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('todo_write: real model records a
   it('appends a todo/write event with the model-produced task list', async () => {
     workdir = await mkdtemp(join(tmpdir(), 'dsh-todo-write-e2e-'))
     ctx = await codingHarness(workdir, { persona: TODO_SYSTEM_PROMPT })
-    const agent = ctx.agentLoop.create(SessionId('e2e-todo'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('e2e-todo'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({
       content: [{ type: 'text', text:
diff --git a/examples/jsonrpc-agent/cordis.snapshot.yml b/examples/jsonrpc-agent/cordis.snapshot.yml
index 28d17c9b3d..6c3a6f99e7 100644
--- a/examples/jsonrpc-agent/cordis.snapshot.yml
+++ b/examples/jsonrpc-agent/cordis.snapshot.yml
@@ -1,7 +1,7 @@
 # Keyless replay includes the live `cordis.yml`, disables the key-requiring
 # DeepSeek adapter, and inserts `llm-replay` to serve recorded JSONL without a
 # key or network; every other entry remains shared. The replay provider
-# catalog claims the `deepseek` provider so the SDK server's `initialize`
+# catalog claims the `deepseek-official` provider so the SDK server's `initialize`
 # finds it owned and never mounts the real-adapter fallback. The SDK snapshot
 # suite passes this path explicitly through `DSH_CORDIS_CONFIG` (the
 # jsonrpc-demo bin performs no DSH_SNAPSHOT config swap of its own), and
@@ -22,7 +22,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/jsonrpc-agent/cordis.yml b/examples/jsonrpc-agent/cordis.yml
index b23dd30b4a..9806413725 100644
--- a/examples/jsonrpc-agent/cordis.yml
+++ b/examples/jsonrpc-agent/cordis.yml
@@ -7,8 +7,8 @@
     maxTokensAsSuccess: !!js "process.env.DSH_MAX_TOKENS_AS_SUCCESS === undefined ? true : JSON.parse(process.env.DSH_MAX_TOKENS_AS_SUCCESS)"
 
 # The DeepSeek adapter. Shipped default: full thinking at max effort on every
-# request (wire-only defaults; they never enter the request header). The model
-# arrives per session over JSON-RPC, so it is not pinned here.
+# request; exact-model resolution materializes request defaults before logging.
+# The model arrives per session over JSON-RPC, so it is not pinned here.
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config:
diff --git a/examples/jsonrpc-agent/persistent-tools.snapshot.cordis.yml b/examples/jsonrpc-agent/persistent-tools.snapshot.cordis.yml
index 5bda5ac6a5..498d5467f2 100644
--- a/examples/jsonrpc-agent/persistent-tools.snapshot.cordis.yml
+++ b/examples/jsonrpc-agent/persistent-tools.snapshot.cordis.yml
@@ -1,5 +1,8 @@
 # Keyless replay keeps the persistent-tool composition intact and replaces
-# only its live DeepSeek adapter with the fixture-backed provider.
+# only its live DeepSeek adapter with the fixture-backed provider. The catalog
+# below claims the same `deepseek-official` route the agent asks for: an
+# unowned route makes the SDK server mount the real adapter, which then demands
+# a key this keyless lane has no way to supply.
 - id: base
   name: '@cordisjs/plugin-include'
   config:
@@ -13,7 +16,7 @@
             name: '@deepseek-ai/dsh-llm-replay'
             config:
               providers:
-                - id: deepseek
+                - id: deepseek-official
                   name: DeepSeek
                   models:
                     - id: deepseek-v4-flash
diff --git a/examples/jsonrpc-agent/tests/keyless-smoke.e2e.ts b/examples/jsonrpc-agent/tests/keyless-smoke.e2e.ts
index f649bce215..cee30b4328 100644
--- a/examples/jsonrpc-agent/tests/keyless-smoke.e2e.ts
+++ b/examples/jsonrpc-agent/tests/keyless-smoke.e2e.ts
@@ -105,7 +105,7 @@ describe('jsonrpc-agent keyless smoke', () => {
         jsonrpc: '2.0',
         id: 1,
         method: 'initialize',
-        params: { cwd: root, provider: 'deepseek', model: 'deepseek-v4-pro', maxTokens: 1234 },
+        params: { cwd: root, provider: 'deepseek-official', model: 'deepseek-v4-pro', maxTokens: 1234 },
       })}\n`)
       const initialized = await waitForLine(lines, value => value.id === 1, () => stderr)
       expect(initialized).toMatchObject({
diff --git a/examples/jsonrpc-agent/tests/sdk.snapshot.ts b/examples/jsonrpc-agent/tests/sdk.snapshot.ts
index 11c7615c48..f749dffeb4 100644
--- a/examples/jsonrpc-agent/tests/sdk.snapshot.ts
+++ b/examples/jsonrpc-agent/tests/sdk.snapshot.ts
@@ -238,7 +238,7 @@ async function runScenario(scenario: SdkScenario): Promise<{
       requestTimeoutMs: 110_000,
     },
     cwd,
-    provider: 'deepseek',
+    provider: 'deepseek-official',
     model: 'deepseek-v4-flash',
   })
   try {
diff --git a/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
index 8a2c432068..94af2458c1 100644
--- a/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
@@ -2,7 +2,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run this exact command with your bash tool, then reply with its stdout only: echo dsh-sdk-proof-7391"}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Run this exact command with","messageSeqs":[1],"source":{"kind":"fallback"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"The"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" user"}}}}}
@@ -57,7 +57,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":56,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":59,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific bash command and reply with its stdout only."},{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":59,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific bash command and reply with its stdout only."},{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":60,"time":0,"data":{"turn":1,"step":1,"callId":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":61,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_Ry17evSfTr0uJnHhg3X93070"},"content":[{"type":"tool-result","toolCallId":"call_00_Ry17evSfTr0uJnHhg3X93070","content":[{"type":"text","text":"dsh-sdk-proof-7391\n"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[60],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":62,"time":0,"data":{"turn":1,"step":1}}}}
@@ -91,7 +91,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":90,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"dsh-sdk-proof-7391"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":91,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":92,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":93,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command produced the expected output. I'll reply with just that stdout."},{"type":"text","text":"dsh-sdk-proof-7391"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":93,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command produced the expected output. I'll reply with just that stdout."},{"type":"text","text":"dsh-sdk-proof-7391"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":94,"time":0,"data":{"turn":1,"step":2}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":95,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}}
 {"method":"session.finished","params":{"sessionId":"{{sessionId}}","status":"ok","reason":{"kind":"completed"}}}
diff --git a/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl
index a1e3925531..c509bd6a70 100644
--- a/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl
@@ -3,7 +3,7 @@
 {"type":"user/message","seq":1,"time":1785097395905,"data":{"content":[{"type":"text","text":"Run this exact command with your bash tool, then reply with its stdout only: echo dsh-sdk-proof-7391"}],"source":{"kind":"user"},"role":"user","id":"295507c3-4ba7-4695-a535-73e75046abb3"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785097395907,"data":{"title":"Run this exact command with","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785097395908,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785097395909,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785097395909,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785097396437,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
 {"type":"reasoning-chunks","seq0":6,"time0":1785097396438,"data":{"turn":1,"step":1,"index":0,"dt":[219,22,1,0,0,0,1,24,25,0,0,25,1,24,1,0],"texts":["The"," user"," wants"," me"," to"," run"," a"," specific"," bash"," command"," and"," reply"," with"," its"," stdout"," only","."]}}
 {"type":"assistant/chunk","seq":23,"time":1785097396856,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
@@ -12,7 +12,7 @@
 {"type":"assistant/chunk","seq":56,"time":1785097397114,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}}}}
 {"type":"assistant/chunk","seq":57,"time":1785097397114,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}}}}
 {"type":"assistant/chunk","seq":58,"time":1785097397114,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":59,"time":1785097397118,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific bash command and reply with its stdout only."},{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"b557e463-5268-4534-8312-5c678b0fe976"},"usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}
+{"type":"assistant/message","seq":59,"time":1785097397118,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to run a specific bash command and reply with its stdout only."},{"type":"tool-call","id":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b557e463-5268-4534-8312-5c678b0fe976"},"usage":{"inputTokens":123,"outputTokens":89,"cacheReadTokens":1664,"reasoningTokens":17}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58],"surfaceOp":"append"}
 {"type":"tool/call","seq":60,"time":1785097397119,"data":{"turn":1,"step":1,"callId":"call_00_Ry17evSfTr0uJnHhg3X93070","name":"bash","arguments":"{\"command\": \"echo dsh-sdk-proof-7391\", \"description\": \"Run the echo command as requested\"}"}}
 {"type":"tool/result","seq":61,"time":1785097397142,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_Ry17evSfTr0uJnHhg3X93070"},"content":[{"type":"tool-result","toolCallId":"call_00_Ry17evSfTr0uJnHhg3X93070","content":[{"type":"text","text":"dsh-sdk-proof-7391\n"}],"isError":false}],"role":"user","id":"5182c6ea-9006-4cb8-b6ce-f5147848e7d9"}},"sourceEventSeqs":[60],"surfaceOp":"append"}
 {"type":"step/end","seq":62,"time":1785097397145,"data":{"turn":1,"step":1}}
@@ -25,6 +25,6 @@
 {"type":"assistant/chunk","seq":90,"time":1785097398408,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"dsh-sdk-proof-7391"}}}}
 {"type":"assistant/chunk","seq":91,"time":1785097398409,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}}}}
 {"type":"assistant/chunk","seq":92,"time":1785097398409,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":93,"time":1785097398409,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command produced the expected output. I'll reply with just that stdout."},{"type":"text","text":"dsh-sdk-proof-7391"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"807f55f2-4da7-4fda-9789-75f3be040428"},"usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92],"surfaceOp":"append"}
+{"type":"assistant/message","seq":93,"time":1785097398409,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The command produced the expected output. I'll reply with just that stdout."},{"type":"text","text":"dsh-sdk-proof-7391"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"807f55f2-4da7-4fda-9789-75f3be040428"},"usage":{"inputTokens":233,"outputTokens":24,"cacheReadTokens":1664,"reasoningTokens":15}},"sourceEventSeqs":[64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92],"surfaceOp":"append"}
 {"type":"step/end","seq":94,"time":1785097398411,"data":{"turn":1,"step":2}}
 {"type":"turn/end","seq":95,"time":1785097398412,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl
index e69b5d95ee..074d563844 100644
--- a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl
@@ -2,13 +2,13 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Prove that bash state persists. Then create {{cwd}}/note.txt with a tab-indented line, view it, replace that literal tab-indented line, and make the persistent shell exit with code 9."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Prove that bash state persists.","messageSeqs":[1],"source":{"kind":"fallback"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"bash-1","name":"bash","argumentsDelta":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"bash-1"},"content":[{"type":"tool-result","toolCallId":"bash-1","content":[{"type":"text","text":"COUNT=1 CWD=/tmp"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[11],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}}
@@ -18,7 +18,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-2","name":"bash","arguments":"{\"command\":\"DSH_EXAMPLE_COUNT=$((DSH_EXAMPLE_COUNT + 1)); printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-2","name":"bash","arguments":"{\"command\":\"DSH_EXAMPLE_COUNT=$((DSH_EXAMPLE_COUNT + 1)); printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-2","name":"bash","arguments":"{\"command\":\"DSH_EXAMPLE_COUNT=$((DSH_EXAMPLE_COUNT + 1)); printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"bash-2","name":"bash","arguments":"{\"command\":\"DSH_EXAMPLE_COUNT=$((DSH_EXAMPLE_COUNT + 1)); printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"bash-2"},"content":[{"type":"tool-result","toolCallId":"bash-2","content":[{"type":"text","text":"COUNT=2 CWD=/tmp"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[21],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":23,"time":0,"data":{"turn":1,"step":2}}}}
@@ -28,7 +28,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"editor-create","name":"str_replace_editor","arguments":"{\"command\":\"create\",\"path\":\"{{cwd}}/note.txt\",\"file_text\":\"target:\\n\\told\\n\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-create","name":"str_replace_editor","arguments":"{\"command\":\"create\",\"path\":\"{{cwd}}/note.txt\",\"file_text\":\"target:\\n\\told\\n\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-create","name":"str_replace_editor","arguments":"{\"command\":\"create\",\"path\":\"{{cwd}}/note.txt\",\"file_text\":\"target:\\n\\told\\n\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":31,"time":0,"data":{"turn":1,"step":3,"callId":"editor-create","name":"str_replace_editor","arguments":"{\"command\":\"create\",\"path\":\"{{cwd}}/note.txt\",\"file_text\":\"target:\\n\\told\\n\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":32,"time":0,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"editor-create"},"content":[{"type":"tool-result","toolCallId":"editor-create","content":[{"type":"text","text":"New file created successfully at: {{cwd}}/note.txt"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[31],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":33,"time":0,"data":{"turn":1,"step":3}}}}
@@ -38,7 +38,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"editor-view","name":"str_replace_editor","arguments":"{\"command\":\"view\",\"path\":\"{{cwd}}/note.txt\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":40,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-view","name":"str_replace_editor","arguments":"{\"command\":\"view\",\"path\":\"{{cwd}}/note.txt\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":40,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-view","name":"str_replace_editor","arguments":"{\"command\":\"view\",\"path\":\"{{cwd}}/note.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":41,"time":0,"data":{"turn":1,"step":4,"callId":"editor-view","name":"str_replace_editor","arguments":"{\"command\":\"view\",\"path\":\"{{cwd}}/note.txt\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":42,"time":0,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"editor-view"},"content":[{"type":"tool-result","toolCallId":"editor-view","content":[{"type":"text","text":"Here's the content of {{cwd}}/note.txt with line numbers (which has a total of 3 lines):\n     1  target:\n     2  \told\n     3  \n"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[41],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":43,"time":0,"data":{"turn":1,"step":4}}}}
@@ -48,7 +48,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"editor-replace","name":"str_replace_editor","arguments":"{\"command\":\"str_replace\",\"path\":\"{{cwd}}/note.txt\",\"old_str\":\"\\told\",\"new_str\":\"\\tnew\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-replace","name":"str_replace_editor","arguments":"{\"command\":\"str_replace\",\"path\":\"{{cwd}}/note.txt\",\"old_str\":\"\\told\",\"new_str\":\"\\tnew\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"editor-replace","name":"str_replace_editor","arguments":"{\"command\":\"str_replace\",\"path\":\"{{cwd}}/note.txt\",\"old_str\":\"\\told\",\"new_str\":\"\\tnew\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":51,"time":0,"data":{"turn":1,"step":5,"callId":"editor-replace","name":"str_replace_editor","arguments":"{\"command\":\"str_replace\",\"path\":\"{{cwd}}/note.txt\",\"old_str\":\"\\told\",\"new_str\":\"\\tnew\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":52,"time":0,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"editor-replace"},"content":[{"type":"tool-result","toolCallId":"editor-replace","content":[{"type":"text","text":"The file {{cwd}}/note.txt has been edited successfully."}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[51],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":53,"time":0,"data":{"turn":1,"step":5}}}}
@@ -58,7 +58,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-exit","name":"bash","arguments":"{\"command\":\"exit 9\"}"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-exit","name":"bash","arguments":"{\"command\":\"exit 9\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-exit","name":"bash","arguments":"{\"command\":\"exit 9\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":61,"time":0,"data":{"turn":1,"step":6,"callId":"bash-exit","name":"bash","arguments":"{\"command\":\"exit 9\"}"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":62,"time":0,"data":{"turn":1,"step":6,"message":{"source":{"kind":"tool","callId":"bash-exit"},"content":[{"type":"tool-result","toolCallId":"bash-exit","content":[{"type":"text","text":"exit\n[shell exited: code 9]\nThe persistent bash shell was reset; the next bash call starts from the workspace with a fresh current directory and environment."}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[61],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":63,"time":0,"data":{"turn":1,"step":6}}}}
@@ -68,7 +68,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":67,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"PERSISTENT_TOOLS_OK"}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":68,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":69,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"PERSISTENT_TOOLS_OK"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"PERSISTENT_TOOLS_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/end","seq":71,"time":0,"data":{"turn":1,"step":7}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":72,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}}
 {"method":"session.finished","params":{"sessionId":"{{sessionId}}","status":"ok","reason":{"kind":"completed"}}}
diff --git a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
index 8a288888d5..96abcbdfa8 100644
--- a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
@@ -3,13 +3,13 @@
 {"type":"user/message","seq":1,"time":1785331618311,"data":{"content":[{"type":"text","text":"Prove that bash state persists. Then create {{cwd}}/note.txt with a tab-indented line, view it, replace that literal tab-indented line, and make the persistent shell exit with code 9."}],"source":{"kind":"user"},"role":"user","id":"d0534fe8-a74b-4fcf-913f-d78e36f486bb"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785331618312,"data":{"title":"Prove that bash state persists.","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785331618312,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785331618313,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/header","seq":4,"time":1785331618313,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
 {"type":"assistant/chunk","seq":5,"time":1785331618325,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":6,"time":1785331618325,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"bash-1","name":"bash","argumentsDelta":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}
 {"type":"assistant/chunk","seq":7,"time":1785331618326,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}}}
 {"type":"assistant/chunk","seq":8,"time":1785331618326,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":9,"time":1785331618326,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1785331618327,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"68f0912b-5e3a-417e-a324-00871206cdf7"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
+{"type":"assistant/message","seq":10,"time":1785331618327,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"68f0912b-5e3a-417e-a324-00871206cdf7"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
 {"type":"tool/call","seq":11,"time":1785331618327,"data":{"turn":1,"step":1,"callId":"bash-1","name":"bash","arguments":"{\"command\":\"cd /tmp && export DSH_EXAMPLE_COUNT=1 && printf \\\"COUNT=%s CWD=%s\\\\n\\\" \\\"$DSH_EXAMPLE_COUNT\\\" \\\"$PWD\\\"\"}"}}
 {"type":"tool/result","seq":12,"time":1785331618649,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"bash-1"},"content":[{"type":"tool-result","toolCallId":"bash-1","content":[{"type":"text","text":"COUNT=1 CWD=/tmp"}],"isError":false}],"role":"user","id":"a83a469c-0321-4f8b-a40e-913c1b433b9d"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
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@@ -19,7 +19,7 @@
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@@ -29,7 +29,7 @@
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@@ -39,7 +39,7 @@
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@@ -49,7 +49,7 @@
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@@ -59,7 +59,7 @@
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@@ -69,6 +69,6 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl
index b3c0031fe1..548c7f7178 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl
@@ -2,7 +2,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the subagent tool exactly once with description 'echo probe' and prompt: Reply with exactly: child answer 42. Then reply with the subagent's final answer verbatim."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}
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@@ -92,14 +92,14 @@
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@@ -125,7 +125,7 @@
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@@ -169,7 +169,7 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
index 7b0db305f6..8a18c27e16 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
@@ -3,7 +3,7 @@
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@@ -12,6 +12,6 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
index f43a78f588..71462cd4fd 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
@@ -3,7 +3,7 @@
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@@ -12,7 +12,7 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
index 4fb1d5492f..bdec61152e 100644
--- a/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
@@ -2,7 +2,7 @@
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Reply with exactly: SDK snapshot OK"}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}
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@@ -32,7 +32,7 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
index d7192b0a12..c4d7ae2c57 100644
--- a/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
@@ -3,7 +3,7 @@
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@@ -12,6 +12,6 @@
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+{"type":"assistant/message","seq":34,"time":1785097382283,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly \"SDK snapshot OK\". Let me do that."},{"type":"text","text":"SDK snapshot OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"11a5f0b8-dd63-4fe6-9dc9-c2fb50600b3f"},"usage":{"inputTokens":1769,"outputTokens":24,"cacheReadTokens":0,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33],"surfaceOp":"append"}
 {"type":"step/end","seq":35,"time":1785097382288,"data":{"turn":1,"step":1}}
 {"type":"turn/end","seq":36,"time":1785097382288,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/package.json b/examples/package.json
index d0f7d4143c..b7e7b5d736 100644
--- a/examples/package.json
+++ b/examples/package.json
@@ -22,6 +22,7 @@
     "@deepseek-ai/dsh-commands": "workspace:*",
     "@deepseek-ai/dsh-compact-basic": "workspace:*",
     "@deepseek-ai/dsh-compact-tool-result-prune": "workspace:*",
+    "@deepseek-ai/dsh-credentials-local": "workspace:*",
     "@deepseek-ai/dsh-fs-local": "workspace:*",
     "@deepseek-ai/dsh-fs-policy": "workspace:*",
     "@deepseek-ai/dsh-fs-sandbox": "workspace:^",
@@ -54,6 +55,7 @@
     "@deepseek-ai/dsh-session-telemetry-otel": "workspace:*",
     "@deepseek-ai/dsh-session-title": "workspace:*",
     "@deepseek-ai/dsh-session-title-first-message-llm": "workspace:*",
+    "@deepseek-ai/dsh-settings-local": "workspace:*",
     "@deepseek-ai/dsh-skill": "workspace:*",
     "@deepseek-ai/dsh-skill-local": "workspace:*",
     "@deepseek-ai/dsh-spill-local": "workspace:*",
diff --git a/packages/README.i18n.yaml b/packages/README.i18n.yaml
index fb1b330d86..369277ba3f 100644
--- a/packages/README.i18n.yaml
+++ b/packages/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/README.md
-README.md: 11179cf6676d1b4382816e34285529b51152fe8d
-README.zh.md: 100d918287613973604b2f85060572b8ee41d132
+README.md: 0c729f781151fcc0bda81899e51227e71c7b8d2b
+README.zh.md: 660a24eeea5f1a36841654626d94412371a2f462
diff --git a/packages/README.md b/packages/README.md
index 11179cf667..0c729f7811 100644
--- a/packages/README.md
+++ b/packages/README.md
@@ -40,6 +40,7 @@ Packages live at `packages/<group>/<pkg>/`; groups are containers, while names r
 | [`session-query/`](session-query/README.md) | Session retrieval family: logical corpus, bounded reads, lineage, event relationships, semantic filtering, and SQLite full-text search | Product — stable surface |
 | [`session-title/`](session-title/README.md) | Log-backed session titles: fallback service and opt-in LLM providers | Product — stable surface |
 | [`settings/`](settings/README.md) | User-settings seam + file-backed provider | Product — stable surface |
+| [`credentials/`](credentials/README.md) | Credential-reference seam + env-over-`.env` provider | Product — stable surface |
 | [`telemetry/`](telemetry/README.md) | Session reporting: capture/redact seam, OTel backend | Product — stable surface |
 | [`storage/`](storage/README.md) | Non-session storage hub + backends + domain form | Product — stable surface |
 | [`workspace/`](workspace/README.md) | Workspace entity | Product — stable surface |
diff --git a/packages/README.zh.md b/packages/README.zh.md
index 100d918287..660a24eeea 100644
--- a/packages/README.zh.md
+++ b/packages/README.zh.md
@@ -40,6 +40,7 @@
 | [`session-query/`](session-query/README.md) | 会话检索系列：逻辑语料库、有界读取、血缘、事件关系、语义过滤和 SQLite 全文搜索 | 产品：稳定表面 |
 | [`session-title/`](session-title/README.md) | 日志支撑的会话标题：回退服务与选用 LLM 提供方 | 产品：稳定表面 |
 | [`settings/`](settings/README.md) | 用户设置 seam + 文件 provider | 产品：稳定表面 |
+| [`credentials/`](credentials/README.md) | 凭据引用 seam + 环境叠加 `.env` provider | 产品：稳定表面 |
 | [`telemetry/`](telemetry/README.md) | 会话上报：捕获／脱敏 seam、OTel 后端 | 产品：稳定表面 |
 | [`storage/`](storage/README.md) | 非会话存储中枢 + 后端 + 领域形式 | 产品：稳定表面 |
 | [`workspace/`](workspace/README.md) | Workspace 实体 | 产品：稳定表面 |
diff --git a/packages/client/connection/README.i18n.yaml b/packages/client/connection/README.i18n.yaml
index 6b8558f9be..70657d55d7 100644
--- a/packages/client/connection/README.i18n.yaml
+++ b/packages/client/connection/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/connection/README.md
-README.md: 173a9b9998e17d201b2d31d73ea74a94b319dae6
-README.zh.md: ca5da643db443956c25399f07c8b460900942ad4
+README.md: d2fda9f15125915594259e01e5b153609ceb21bb
+README.zh.md: 669ae760693b4d98ee873ee5fe323554f58e7ca5
diff --git a/packages/client/connection/README.md b/packages/client/connection/README.md
index 173a9b9998..d2fda9f151 100644
--- a/packages/client/connection/README.md
+++ b/packages/client/connection/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Wire consumer layer: the client plugin's apply mounts `ctx.connection` (shared api client + single-consumer stream-loop starter); the export face carries the wire contract types, the `AbstractApiClient` seam, and the loop's sink/config types. The platform subclasses (WebApiClient/FixtureApiClient), the ConnectionController loop, and the fixture data source are package-internal — apply selects and drives them; tests reach them via src. Contract: api-contracts v3 §3.
+Wire consumer layer: the client plugin's apply mounts `ctx.connection` (shared api client + single-consumer stream-loop starter); the export face carries the wire contract types, the `AbstractApiClient` seam, and the loop's sink/config types. The node half's `/api` route pins the privileged method set (`host.pickDirectory`, `host.openPath`, and the whole configuration plane — `settings.describe`/`update`/`replace`/`mutate` and `credentials.describe`/`set`/`unset`, reads included, since describing returns the exposed configuration and probing an arbitrary reference reports where a credential comes from) to loopback by passing the trust fence with an empty trust list — a declared `trustedHosts` authority reaches every other method, while these stay loopback-local until a real authentication layer exists. The platform subclasses (WebApiClient/FixtureApiClient), the ConnectionController loop, and the fixture data source are package-internal — apply selects and drives them; tests reach them via src. Contract: api-contracts v3 §3.
 
 ## /api browser-trust fence
 
diff --git a/packages/client/connection/README.zh.md b/packages/client/connection/README.zh.md
index ca5da643db..669ae76069 100644
--- a/packages/client/connection/README.zh.md
+++ b/packages/client/connection/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-协议消费层：客户端插件的 apply 会挂载 `ctx.connection`（共享 API 客户端 + 单消费方流循环启动器）；导出表层携带协议契约类型、`AbstractApiClient` seam，以及循环的 sink／配置类型。平台子类（WebApiClient/FixtureApiClient）、ConnectionController 循环和 fixture 数据源都属于包内部：apply 负责选择并驱动它们，测试则通过 src 访问。契约：api-contracts v3 §3。
+协议消费层：客户端插件的 apply 会挂载 `ctx.connection`（共享 API 客户端 + 单消费方流循环启动器）；导出表层携带协议契约类型、`AbstractApiClient` seam，以及循环的 sink／配置类型。node 半侧的 `/api` 路由让特权方法集（`host.pickDirectory`、`host.openPath`，以及整个配置面——`settings.describe`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`，读取也在内，因为 describe 会返回已暴露的配置，而探测任意引用会报出某条凭据来自何处）以空信任表过信任 fence，从而钉在回环——已声明的 `trustedHosts` 授权可达其余全部方法，而这些方法在真正的认证层出现之前仍只限回环本机。平台子类（WebApiClient/FixtureApiClient）、ConnectionController 循环和 fixture 数据源都属于包内部：apply 负责选择并驱动它们，测试则通过 src 访问。契约：api-contracts v3 §3。
 
 ## /api 浏览器信任栅栏
 
diff --git a/packages/client/connection/src/client/api.ts b/packages/client/connection/src/client/api.ts
index b58718134d..cc9d2a1eb9 100644
--- a/packages/client/connection/src/client/api.ts
+++ b/packages/client/connection/src/client/api.ts
@@ -14,6 +14,8 @@ export type {
   ModelCatalogFailure, ModelCatalogModel, ModelProviderGroup, ModelReasoning,
   InboxItemId, ModelReasoningEffort, ModelTarget, QueueAction, QueuedInboxItem, SessionModels,
   GoalsApi, GoalRef,
+  SettingsApi, SettingsNamespaceView, SettingsPathOpView, SettingsSecretView,
+  CredentialsApi, CredentialView, ConfigurableProviderView, LlmApi,
 } from '@deepseek-ai/dsh-host-apiproxy/api'
 export type { ToolCallView, ToolResultView } from '@deepseek-ai/dsh-tools/presentation'
 export type {
diff --git a/packages/client/connection/src/client/fixture.ts b/packages/client/connection/src/client/fixture.ts
index 916125ff6f..068fdc8307 100644
--- a/packages/client/connection/src/client/fixture.ts
+++ b/packages/client/connection/src/client/fixture.ts
@@ -28,7 +28,7 @@ import type {
 import type { CommandId } from '@deepseek-ai/dsh-commands/brand'
 import type {
   ApiProxy, ClientRequest, ClientResponse, HistoryEntry, HostFrame, MuxFrame, RpcReceipt,
-  ModelTarget, RpcRequest, RpcResponse, RpcResult, ServerRequest, ServerResponse, SessionSummary,
+  ModelProviderGroup, ModelTarget, RpcRequest, RpcResponse, RpcResult, ServerRequest, ServerResponse, SessionSummary,
   ToolCallView, ToolEventView, ToolResultView, WorkspaceId, WorkspaceView,
 } from './api.ts'
 import type { RequestPayload, ResponseValue, RpcMethodMap } from '@deepseek-ai/dsh-host-apiproxy/api'
@@ -155,6 +155,35 @@ const OPENAI_REASONING = {
   defaultEffort: 'medium',
 }
 
+/** Catalog served by `session.models` and `llm.models` alike (fresh copies per call). */
+function fixtureModelGroups(): ModelProviderGroup[] {
+  return [
+    {
+      id: 'deepseek-official',
+      name: 'DeepSeek',
+      models: [
+        {
+          id: 'deepseek-v4-flash',
+          name: 'DeepSeek-V4-Flash',
+          description: '快速响应',
+          reasoning: DEEPSEEK_REASONING,
+        },
+        {
+          id: 'deepseek-v4-pro',
+          name: 'DeepSeek-V4-Pro',
+          description: '复杂任务',
+          reasoning: DEEPSEEK_REASONING,
+        },
+      ],
+    },
+    {
+      id: 'openai',
+      name: 'OpenAI',
+      models: [{ id: 'gpt-5', name: 'GPT-5', reasoning: OPENAI_REASONING }],
+    },
+  ]
+}
+
 function sid(id: string): SessionId {
   return id as SessionId
 }
@@ -684,8 +713,14 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
   const logs = new Map<SessionId, SessionEvent[]>([[sid('fx-alpha'), buildAlphaLog()]])
   const modelTargets = new Map<SessionId, ModelTarget>(sessions.map(session => [
     session.sessionId,
-    { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
   ]))
+  /** Credential store double: set/unset flip the describe badge, values never read back. */
+  const fixtureCredentials = new Map<string, true>([
+    // The assembled fixture represents an already-configured shipped
+    // DeepSeek route so unrelated GUI journeys do not enter first-run setup.
+    ['DEEPSEEK_API_KEY', true],
+  ])
   const nextTurn = new Map<SessionId, number>([[sid('fx-alpha'), 60]])
   let nextSession = 1
   let nextRpc = 1
@@ -1001,7 +1036,7 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
           sessionId: requestedId ?? sid(`fx-${nextSession++}`), updatedAt: Date.now(), running: false, blank: true, cwd,
         }
         sessions.push(created)
-        modelTargets.set(created.sessionId, { provider: 'deepseek', model: 'deepseek-v4-flash' })
+        modelTargets.set(created.sessionId, { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
         attachedSessions += 1
         const emitSession = (): void => {
           // Mirrors the host: the frame fires at creation, so blank is constantly true.
@@ -1111,32 +1146,8 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       },
       models: request => ok(request, {
         current: modelTargets.get(request.payload.sessionId)
-          ?? { provider: 'deepseek', model: 'deepseek-v4-flash' },
-        groups: [
-          {
-            id: 'deepseek',
-            name: 'DeepSeek',
-            models: [
-              {
-                id: 'deepseek-v4-flash',
-                name: 'DeepSeek-V4-Flash',
-                description: '快速响应',
-                reasoning: DEEPSEEK_REASONING,
-              },
-              {
-                id: 'deepseek-v4-pro',
-                name: 'DeepSeek-V4-Pro',
-                description: '复杂任务',
-                reasoning: DEEPSEEK_REASONING,
-              },
-            ],
-          },
-          {
-            id: 'openai',
-            name: 'OpenAI',
-            models: [{ id: 'gpt-5', name: 'GPT-5', reasoning: OPENAI_REASONING }],
-          },
-        ],
+          ?? { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+        groups: fixtureModelGroups(),
         failures: [],
       }),
       selectModel: (request) => {
@@ -1381,14 +1392,14 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
           const spec = PERMISSION_PRESETS[preset]
           if (preset === '') {
             const current = permissionSelectOf(logOf(id)).currentValue
-            append(id, { type: 'command/done', data: { commandId, kind: 'success', text: `Current permission preset: ${current}. Available: ${Object.keys(PERMISSION_PRESETS).join(', ')}.` } })
+            append(id, { type: 'command/done', data: { commandId, kind: 'success', text: `current preset ${current} (available: ${Object.keys(PERMISSION_PRESETS).join(', ')})` } })
           } else if (spec === undefined) {
-            append(id, { type: 'command/done', data: { commandId, kind: 'error', text: `unknown permission preset ${JSON.stringify(preset)} (available: ${Object.keys(PERMISSION_PRESETS).join(', ')})` } })
+            append(id, { type: 'command/done', data: { commandId, kind: 'error', text: `unknown preset "${preset}" (available: ${Object.keys(PERMISSION_PRESETS).join(', ')})` } })
           } else {
             if (permissionSelectOf(logOf(id)).currentValue !== preset) append(id, { type: 'permission/preset', data: { preset } })
             append(id, { type: 'sandbox/mode', data: { mode: spec.sandbox } })
             append(id, { type: 'approval/policy', data: { policy: spec.approval } })
-            append(id, { type: 'command/done', data: { commandId, kind: 'success', text: `Permission preset: ${preset}.` } })
+            append(id, { type: 'command/done', data: { commandId, kind: 'success', text: `preset ${preset}` } })
           }
           return ok(request, { matched: true as const, commandId })
         }
@@ -1572,6 +1583,64 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
         }
       },
     },
+    settings: {
+      // Only the resolved DeepSeek address needed by first-run readiness is
+      // represented here. Fixture-backed journeys do not open its Models
+      // editor; real schema-driven forms ride the HTTP transport.
+      describe: request => ok(request, {
+        writable: true,
+        namespaces: [{
+          ns: 'llm-deepseek',
+          schema: {},
+          value: { apiKeyEnv: 'DEEPSEEK_API_KEY' },
+          applies: 'live',
+          secrets: [{ path: ['apiKey'], set: false }],
+          revision: 0,
+        }],
+      }),
+      update: request => err(request, {
+        code: 'settings-rejected',
+        message: 'fixture: the minimal readiness settings descriptor is read-only',
+        details: { ns: request.payload.ns },
+      }),
+      replace: request => err(request, {
+        code: 'settings-rejected',
+        message: 'fixture: the minimal readiness settings descriptor is read-only',
+        details: { ns: request.payload.ns },
+      }),
+      mutate: request => err(request, {
+        code: 'settings-rejected',
+        message: 'fixture: no settings namespaces are registered',
+        details: { ns: request.payload.ns },
+      }),
+    },
+    credentials: {
+      describe: request => ok(request, {
+        credentials: Object.fromEntries(request.payload.refs.map(ref => [ref, {
+          configured: fixtureCredentials.has(ref),
+          ...fixtureCredentials.has(ref) ? { source: 'file' } : {},
+          writable: true,
+        }])),
+      }),
+      set: (request) => {
+        fixtureCredentials.set(request.payload.ref, true)
+        return ok(request, {})
+      },
+      unset: (request) => {
+        fixtureCredentials.delete(request.payload.ref)
+        return ok(request, {})
+      },
+    },
+    llm: {
+      providers: request => ok(request, {
+        providers: [
+          { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [], active: true },
+          { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: true },
+          { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false },
+        ],
+      }),
+      models: request => ok(request, { groups: fixtureModelGroups(), failures: [] }),
+    },
     respond(message: ClientResponse): Promise<RpcReceipt> {
       // Same routing discipline as the host: rpcId first, then the payload's
       // audit correlation; a settled or unknown id is not-pending.
@@ -1665,6 +1734,15 @@ export class FixtureApiClient extends AbstractApiClient {
       case 'goal.resume': return this.api.goals.resume(request)
       case 'goal.complete': return this.api.goals.complete(request)
       case 'goal.clear': return this.api.goals.clear(request)
+      case 'settings.describe': return this.api.settings.describe(request)
+      case 'settings.update': return this.api.settings.update(request)
+      case 'settings.replace': return this.api.settings.replace(request)
+      case 'settings.mutate': return this.api.settings.mutate(request)
+      case 'credentials.describe': return this.api.credentials.describe(request)
+      case 'credentials.set': return this.api.credentials.set(request)
+      case 'credentials.unset': return this.api.credentials.unset(request)
+      case 'llm.providers': return this.api.llm.providers(request)
+      case 'llm.models': return this.api.llm.models(request)
     }
   }
 
diff --git a/packages/client/connection/src/client/index.ts b/packages/client/connection/src/client/index.ts
index 7d26b1c526..93f5153936 100644
--- a/packages/client/connection/src/client/index.ts
+++ b/packages/client/connection/src/client/index.ts
@@ -22,6 +22,8 @@ export type {
   ClientRequest, ServerResponse, ServerRequest, ClientResponse, RpcMessage, RpcReceipt,
   IApiClient, SessionId, SessionEvent, ContentBlock, StreamChunk,
   GoalsApi, GoalRef,
+  SettingsApi, SettingsNamespaceView, SettingsPathOpView, SettingsSecretView,
+  CredentialsApi, CredentialView, ConfigurableProviderView, LlmApi,
 } from './api.ts'
 export { RpcId, AbstractApiClient, transportError } from './api.ts'
 
diff --git a/packages/client/connection/src/index.ts b/packages/client/connection/src/index.ts
index ce55089bdb..cedc7d86e7 100644
--- a/packages/client/connection/src/index.ts
+++ b/packages/client/connection/src/index.ts
@@ -33,10 +33,38 @@ export const Config: z<ConnectionConfig> = z.object({
   trustedHosts: z.array(String).default([]),
 })
 
+/**
+ * Methods gated to loopback even on a trusted-host deployment. Native dialogs
+ * act on the host machine; the settings and credential domains mutate the
+ * user's configuration and secret store, and READING them is equally
+ * privileged — `settings.describe` returns every exposed namespace's
+ * configuration and `credentials.describe` reports whether an arbitrary
+ * environment-variable name is configured and where from, which is
+ * reconnaissance no anonymous caller should have. `trustedHosts` is a
+ * DNS-rebinding fence, explicitly not authentication, so the whole
+ * configuration plane stays loopback-same-origin until a real authentication
+ * layer exists. The model catalog (`llm.providers`, `llm.models`) is
+ * deliberately NOT here: it carries provider ids, display names, and model
+ * lists — no endpoints, keys, or key state — and a LAN client's model picker
+ * legitimately needs it.
+ */
+const PRIVILEGED_METHODS = new Set([
+  'host.pickDirectory',
+  'host.openPath',
+  'settings.describe',
+  'settings.update',
+  'settings.replace',
+  'credentials.describe',
+  'credentials.set',
+  'credentials.unset',
+])
+
 /**
  * Mounts the API gateway under the browser transport prefix. Every request on
  * the prefix passes the browser-trust fence first (DNS-rebinding and
- * cross-site defense — [api-request-trust](./api-request-trust.ts)).
+ * cross-site defense — [api-request-trust](./api-request-trust.ts));
+ * privileged methods additionally pass it with an empty trust list, which
+ * pins them to loopback.
  * @param ctx - Host plugin context.
  * @param config - resolved plugin config (schema defaults applied).
  */
@@ -51,7 +79,14 @@ export function apply(ctx: Context, config?: ConnectionConfig): void {
     kind: 'prefix',
     path: API_PATH,
     handler: async (req, res) => {
-      if (!isTrustedApiRequest(req, trustedHosts)) {
+      const pathname = new URL(req.url ?? '/', 'http://dsh.internal').pathname
+      const method = pathname.startsWith(`${API_PATH}/`)
+        ? pathname.slice(API_PATH.length + 1)
+        : undefined
+      const allowed = method !== undefined && PRIVILEGED_METHODS.has(method)
+        ? isTrustedApiRequest(req, [])
+        : isTrustedApiRequest(req, trustedHosts)
+      if (!allowed) {
         res.writeHead(403)
         res.end('forbidden')
         return
diff --git a/packages/client/connection/tests/fake-api.ts b/packages/client/connection/tests/fake-api.ts
index 8e99d9f9bb..5524c3a20b 100644
--- a/packages/client/connection/tests/fake-api.ts
+++ b/packages/client/connection/tests/fake-api.ts
@@ -52,11 +52,11 @@ export class FakeApiClient implements IApiClient {
     () => Promise.resolve(ok({
       events: [],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-chat' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-chat' },
     }))
 
   onModels: (payload: unknown) => Promise<RpcResponse<SessionModels>> = () => Promise.resolve(ok({
-    current: { provider: 'deepseek', model: 'deepseek-chat' },
+    current: { provider: 'deepseek-official', model: 'deepseek-chat' },
     groups: [],
     failures: [],
   }))
@@ -156,6 +156,24 @@ export class FakeApiClient implements IApiClient {
     clear: payload => this.record('goal.clear', payload, Promise.resolve(ok({ cleared: true as const }))),
   }
 
+  readonly settings: IApiClient['settings'] = {
+    describe: payload => this.record('settings.describe', payload, Promise.resolve(ok({ writable: true, namespaces: [] }))),
+    update: payload => this.record('settings.update', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+    replace: payload => this.record('settings.replace', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+    mutate: payload => this.record('settings.mutate', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+  }
+
+  readonly credentials: IApiClient['credentials'] = {
+    describe: payload => this.record('credentials.describe', payload, Promise.resolve(ok({ credentials: {} }))),
+    set: payload => this.record('credentials.set', payload, Promise.resolve(ok({}))),
+    unset: payload => this.record('credentials.unset', payload, Promise.resolve(ok({}))),
+  }
+
+  readonly llm: IApiClient['llm'] = {
+    providers: payload => this.record('llm.providers', payload, Promise.resolve(ok({ providers: [] }))),
+    models: payload => this.record('llm.models', payload, Promise.resolve(ok({ groups: [], failures: [] }))),
+  }
+
   /** When true, streams never fire onOpen (misbehaving-carrier material for the handshake timeout guard). */
   suppressStreamOpen = false
 
diff --git a/packages/client/connection/tests/fixture.spec.ts b/packages/client/connection/tests/fixture.spec.ts
index ac27323eb9..6dc8d7cb42 100644
--- a/packages/client/connection/tests/fixture.spec.ts
+++ b/packages/client/connection/tests/fixture.spec.ts
@@ -119,6 +119,36 @@ describe('createFixtureApi', () => {
     expect(JSON.stringify(after.result.value.events)).toContain('openai/gpt-5')
   })
 
+  it('serves configured DeepSeek readiness and keeps credential values write-only', async () => {
+    const api = createFixtureApi()
+    const settings = await api.settings.describe(req({}))
+    if (!settings.result.ok) throw new Error('settings describe failed')
+    expect(settings.result.value.namespaces).toMatchObject([{
+      ns: 'llm-deepseek',
+      value: { apiKeyEnv: 'DEEPSEEK_API_KEY' },
+      secrets: [{ path: ['apiKey'], set: false }],
+    }])
+
+    const initial = await api.credentials.describe(req({ refs: ['DEEPSEEK_API_KEY', 'TEST_API_KEY'] }))
+    if (!initial.result.ok) throw new Error('credential describe failed')
+    expect(initial.result.value.credentials).toEqual({
+      DEEPSEEK_API_KEY: { configured: true, source: 'file', writable: true },
+      TEST_API_KEY: { configured: false, writable: true },
+    })
+    await api.credentials.set(req({ ref: 'TEST_API_KEY', value: 'write-only-fixture-secret' }))
+    const configured = await api.credentials.describe(req({ refs: ['TEST_API_KEY'] }))
+    if (!configured.result.ok) throw new Error('credential describe failed')
+    expect(configured.result.value.credentials.TEST_API_KEY).toEqual({
+      configured: true,
+      source: 'file',
+      writable: true,
+    })
+    await api.credentials.unset(req({ ref: 'TEST_API_KEY' }))
+    const cleared = await api.credentials.describe(req({ refs: ['TEST_API_KEY'] }))
+    if (!cleared.result.ok) throw new Error('credential describe failed')
+    expect(cleared.result.value.credentials.TEST_API_KEY).toEqual({ configured: false, writable: true })
+  })
+
   it('emits the todo/write snapshot at the real tool boundary: between tool/call and tool/result, timestamps monotonic', async () => {
     const api = createFixtureApi()
     const tail = await api.sessions.history(req({ sessionId: sid('fx-alpha'), maxMessages: 10 }))
diff --git a/packages/client/connection/tests/node-half.spec.ts b/packages/client/connection/tests/node-half.spec.ts
index 2c7fd0b281..6839d8b3ca 100644
--- a/packages/client/connection/tests/node-half.spec.ts
+++ b/packages/client/connection/tests/node-half.spec.ts
@@ -1,8 +1,10 @@
 /** Node half: registers the /api prefix route bridging to the api gateway. */
 import { EventEmitter } from 'node:events'
+import { createServer, request as httpRequest } from 'node:http'
 import { Readable } from 'node:stream'
 import { Context } from 'cordis'
 import { describe, expect, it } from 'vitest'
+import type { AddressInfo } from 'node:net'
 import type { IncomingMessage, ServerResponse } from 'node:http'
 import type { ApiProxy } from '@deepseek-ai/dsh-host-apiproxy/api'
 import type { HttpServerService, WebRoute } from '@deepseek-ai/dsh-host-webserver'
@@ -21,9 +23,9 @@ function fakeHttpServer(routes: WebRoute[]): Pick<HttpServerService, 'register'
 }
 
 /** Bodyless GET carrying the given headers (enough for the trust fence + bridge). */
-function fakeRequest(headers: Record<string, string>): IncomingMessage {
+function fakeRequest(headers: Record<string, string>, url = `${API_PATH}/session.list`): IncomingMessage {
   const request = Readable.from([]) as unknown as IncomingMessage
-  Object.assign(request, { url: `${API_PATH}/session.list`, method: 'GET', headers })
+  Object.assign(request, { url, method: 'GET', headers })
   return request
 }
 
@@ -97,6 +99,31 @@ describe('connection node half', () => {
     await dispose()
   })
 
+  it('pins privileged methods to loopback even for a declared trusted authority', async () => {
+    const { routes, dispose } = await mounted({ trustedHosts: ['harness.example'] })
+    // The privileged set: native dialogs plus the whole settings/credential
+    // configuration plane, reads included. The same declared authority reaches
+    // ordinary reads (carrier-level 404 from the empty proxy proves the fence
+    // passed), but each privileged method stays loopback-only and 403s.
+    for (const method of [
+      'host.pickDirectory', 'host.openPath',
+      'settings.describe', 'settings.update', 'settings.replace',
+      'credentials.describe', 'credentials.set', 'credentials.unset',
+    ]) {
+      const denied = fakeResponse()
+      await routes[0]!.handler(
+        fakeRequest({ host: 'harness.example' }, `${API_PATH}/${method}`),
+        denied.response,
+      )
+      expect(denied.state.status).toBe(403)
+      expect(denied.state.body).toBe('forbidden')
+    }
+    const read = fakeResponse()
+    await routes[0]!.handler(fakeRequest({ host: 'harness.example' }), read.response)
+    expect(read.state.status).not.toBe(403)
+    await dispose()
+  })
+
   it('passes loopback and declared-authority requests through to the bridge', async () => {
     const { routes, dispose } = await mounted({ trustedHosts: ['harness.example:3080', '192.168.1.5'] })
     // Loopback, no browser markers (curl shape): the fence passes; the carrier
@@ -118,3 +145,69 @@ describe('connection node half', () => {
     await dispose()
   })
 })
+
+describe('connection node half over a real HTTP server', () => {
+  /** Serve the registered prefix route from a real server and return its port. */
+  async function serve(routes: WebRoute[]): Promise<{ port: number; close: () => Promise<void> }> {
+    const server = createServer((request, response) => {
+      void routes[0]!.handler(request, response)
+    })
+    await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
+    const address = server.address() as AddressInfo
+    return {
+      port: address.port,
+      close: () => new Promise<void>((resolve, reject) => {
+        server.close((error) => {
+          if (error === undefined || error === null) resolve()
+          else reject(error)
+        })
+      }),
+    }
+  }
+
+  /** One real request; `host` spoofs the authority the way a LAN client's browser would send it. */
+  function call(port: number, method: string, host: string): Promise<number> {
+    return new Promise((resolve, reject) => {
+      const request = httpRequest(
+        { host: '127.0.0.1', port, path: `${API_PATH}/${method}`, method: 'GET', headers: { host } },
+        (response) => {
+          response.resume()
+          response.on('end', () => { resolve(response.statusCode ?? 0) })
+        },
+      )
+      request.on('error', reject)
+      request.end()
+    })
+  }
+
+  it('answers a declared LAN authority with 403 on every configuration method, over real HTTP', async () => {
+    // The fence's input is a real IncomingMessage parsed by Node from the
+    // wire, not a hand-assembled object: the Host header a LAN browser sends
+    // is exactly what decides loopback-only here, so the boundary is asserted
+    // against the parse the server actually performs.
+    const { routes, dispose } = await mounted({ trustedHosts: ['harness.example'] })
+    const { port, close } = await serve(routes)
+    try {
+      // Reads are as privileged as writes: describe returns the exposed
+      // configuration, and credentials.describe probes arbitrary env-var names.
+      for (const method of [
+        'settings.describe', 'settings.update', 'settings.replace',
+        'credentials.describe', 'credentials.set', 'credentials.unset',
+        'host.pickDirectory', 'host.openPath',
+      ]) {
+        expect([method, await call(port, method, 'harness.example')]).toEqual([method, 403])
+      }
+      // The model catalog stays reachable for the same authority: a LAN
+      // client's model picker needs it, and it carries no key or endpoint
+      // state (404 is the empty proxy's carrier answer — the fence passed).
+      for (const method of ['llm.providers', 'llm.models']) {
+        expect([method, await call(port, method, 'harness.example')]).toEqual([method, 404])
+      }
+      // Loopback reaches everything, configuration included.
+      expect(await call(port, 'settings.describe', `127.0.0.1:${String(port)}`)).toBe(404)
+    } finally {
+      await close()
+      await dispose()
+    }
+  })
+})
diff --git a/packages/client/runtime/README.i18n.yaml b/packages/client/runtime/README.i18n.yaml
index e82da5cc62..75fa6b2c6c 100644
--- a/packages/client/runtime/README.i18n.yaml
+++ b/packages/client/runtime/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/runtime/README.md
-README.md: b85deeec92fd4da1f342b5536757692f594853a5
-README.zh.md: 2dbb66c56ad5687fb299fe030d0abfe451004a62
+README.md: a116a5e4ad3070f20e6d90490f2507c1e2369c37
+README.zh.md: f375811e6f1480d6636fe4eb77746b76d6414b1e
diff --git a/packages/client/runtime/README.md b/packages/client/runtime/README.md
index b85deeec92..a116a5e4ad 100644
--- a/packages/client/runtime/README.md
+++ b/packages/client/runtime/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Client cordis boot and React-free object services: SlotsService wraps SlotCore and supplies renderer data sources; SessionsService owns Session objects and the Chat-facing list, scope, and event-window state; SessionHistoryService lazily owns independent raw-history ledgers for inspection consumers; WorkspacesService depends on SessionsService and owns Workspace objects, list/actions, default-target derivation, and the New Session blank-reuse entry (`connectWorkspace`). The runtime fans the shared Host stream into the Session, Workspace, and activated history owners without routing inspection state through Session or SessionManager. Client sessions are always Host-born (Session+Agent+cwd in one `session.create`); the client holds no pre-entity session state — a session's Agent scope (the client mirror of host dsh-scope, keyed by the shared agent/session id) is born when its row enters the list mirror and dies with the prune. Contract: api-contracts v3 §4. Each `Session` holds a generic `ProjectionValueStore` seeded from the history-tail `projections` block and updated by `session/projection` frames under higher-seq-wins; domain keys (including `todos`) are read via `projections.faceOf` / `useProjection`, not via `ConversationSnapshot`.
+Client cordis boot and React-free object services: SlotsService wraps SlotCore and supplies renderer data sources; SessionsService owns Session objects and the Chat-facing list, scope, and event-window state; SessionHistoryService lazily owns independent raw-history ledgers for inspection consumers; WorkspacesService depends on SessionsService and owns Workspace objects, list/actions, default-target derivation, and the New Session blank-reuse entry (`connectWorkspace`). The runtime fans the shared Host stream into the Session, Workspace, and activated history owners without routing inspection state through Session or SessionManager, and bridges the registry-invalidation frames to typed ctx events (`commands/changed`, `settings/changed`, `credentials/changed`, `models/changed`) so surface caches refetch without touching the stream. Client sessions are always Host-born (Session+Agent+cwd in one `session.create`); the client holds no pre-entity session state — a session's Agent scope (the client mirror of host dsh-scope, keyed by the shared agent/session id) is born when its row enters the list mirror and dies with the prune. Contract: api-contracts v3 §4. Each `Session` holds a generic `ProjectionValueStore` seeded from the history-tail `projections` block and updated by `session/projection` frames under higher-seq-wins; domain keys (including `todos`) are read via `projections.faceOf` / `useProjection`, not via `ConversationSnapshot`.
 
 ## Workspace and Session lists
 
diff --git a/packages/client/runtime/README.zh.md b/packages/client/runtime/README.zh.md
index 2dbb66c56a..f375811e6f 100644
--- a/packages/client/runtime/README.zh.md
+++ b/packages/client/runtime/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-客户端 cordis 启动与不依赖 React 的对象服务：SlotsService 包装 SlotCore 并提供 renderer 数据源；SessionsService 拥有 Session 对象以及 Chat 所需的列表、scope 和事件窗口状态；SessionHistoryService 为检查类消费方惰性拥有彼此独立的原始历史账本；WorkspacesService 依赖 SessionsService，拥有 Workspace 对象、列表／操作、默认目标派生，以及 New Session 空会话复用入口（`connectWorkspace`）。运行时把共享 Host 流分发给 Session、Workspace 和已激活的历史数据所有者，不让检查状态经过 Session 或 SessionManager。客户端会话一律由 Host 创建（一次 `session.create` 同时产生 Session、agent（智能体）和 cwd）；客户端不持有任何实体化之前的会话状态——agent scope（host dsh-scope 的客户端镜像，以 agent/session 共用 id 为键）在会话行进入列表镜像时创建，并随 prune 销毁。契约：api-contracts v3 §4。每个 `Session` 持有一个通用的 `ProjectionValueStore`，由历史记录尾部的 `projections` 块播种，并经 `session/projection` 帧按 seq 高者胜更新；领域键（含 `todos`）经 `projections.faceOf`／`useProjection` 读取，不经 `ConversationSnapshot`。
+客户端 cordis 启动与不依赖 React 的对象服务：SlotsService 包装 SlotCore 并提供 renderer 数据源；SessionsService 拥有 Session 对象以及 Chat 所需的列表、scope 和事件窗口状态；SessionHistoryService 为检查类消费方惰性拥有彼此独立的原始历史账本；WorkspacesService 依赖 SessionsService，拥有 Workspace 对象、列表／操作、默认目标派生，以及 New Session 空会话复用入口（`connectWorkspace`）。运行时把共享 Host 流分发给 Session、Workspace 和已激活的历史数据所有者，不让检查状态经过 Session 或 SessionManager，并把注册表失效帧桥接为类型化 ctx 事件（`commands/changed`、`settings/changed`、`credentials/changed`、`models/changed`），使各表面缓存无需触碰流即可重拉。客户端会话一律由 Host 创建（一次 `session.create` 同时产生 Session、agent（智能体）和 cwd）；客户端不持有任何实体化之前的会话状态——agent scope（host dsh-scope 的客户端镜像，以 agent/session 共用 id 为键）在会话行进入列表镜像时创建，并随 prune 销毁。契约：api-contracts v3 §4。每个 `Session` 持有一个通用的 `ProjectionValueStore`，由历史记录尾部的 `projections` 块播种，并经 `session/projection` 帧按 seq 高者胜更新；领域键（含 `todos`）经 `projections.faceOf`／`useProjection` 读取，不经 `ConversationSnapshot`。
 
 ## Workspace 与 Session 列表
 
diff --git a/packages/client/runtime/src/client/index.ts b/packages/client/runtime/src/client/index.ts
index f359eb1eac..9a5b3a535d 100644
--- a/packages/client/runtime/src/client/index.ts
+++ b/packages/client/runtime/src/client/index.ts
@@ -122,6 +122,28 @@ declare module 'cordis' {
      * @mode emit
      */
     'commands/changed'(): void
+    /**
+     * One settings namespace's resolved value changed on the host
+     * (host/settings-changed passthrough). Subscribers refetch
+     * `settings.describe`; the frame carries no values.
+     * @mode emit
+     * @param ns - the namespace whose resolved value changed.
+     */
+    'settings/changed'(ns: string): void
+    /**
+     * One credential reference's state changed on the host
+     * (host/credentials-changed passthrough). The ref is an
+     * environment-variable NAME — never a value.
+     * @mode emit
+     * @param ref - the reference whose configured state changed.
+     */
+    'credentials/changed'(ref: string): void
+    /**
+     * The host provider topology changed (host/models-changed passthrough).
+     * Subscribers refetch `llm.providers`/`llm.models`/`session.models`.
+     * @mode emit
+     */
+    'models/changed'(): void
     /**
      * A connection generation was (re-)established. Wire-derived caches must
      * treat their state as stale and repull (commands directory; the queue
@@ -170,8 +192,13 @@ export function apply(ctx: Context): void {
       sessions.handleHostEnvelope(envelope)
       workspaces.handleHostEnvelope(envelope)
       // Typed-event bridge: the session layer ignores registry frames (no
-      // session routing); consumers (command directory caches) subscribe on ctx.
-      if (envelope.payload.type === 'host/commands-changed') ctx.emit('commands/changed')
+      // session routing); consumers (command directory caches, the settings
+      // and model surfaces) subscribe on ctx.
+      const frame = envelope.payload
+      if (frame.type === 'host/commands-changed') ctx.emit('commands/changed')
+      else if (frame.type === 'host/settings-changed') ctx.emit('settings/changed', frame.ns)
+      else if (frame.type === 'host/credentials-changed') ctx.emit('credentials/changed', frame.ref)
+      else if (frame.type === 'host/models-changed') ctx.emit('models/changed')
       try {
         sessionHistory.handleHostEnvelope(envelope)
       } catch (error) {
diff --git a/packages/client/runtime/src/client/session-history/source.ts b/packages/client/runtime/src/client/session-history/source.ts
index 8de11b9da9..4f3e86be6a 100644
--- a/packages/client/runtime/src/client/session-history/source.ts
+++ b/packages/client/runtime/src/client/session-history/source.ts
@@ -1,12 +1,14 @@
 import type {
   HistoryEntry, IApiClient, MuxFrame, RpcError, SessionId,
 } from '@deepseek-ai/dsh-client-connection/client'
+import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
 import { transportError } from '@deepseek-ai/dsh-host-apiproxy/api'
 import type {
   SessionHistoryFace, SessionHistorySnapshot,
 } from '../contract/session-history.ts'
 import { createHistoryInspection } from '../sessions/history.ts'
 import { Notifier } from '../sessions/notifier.ts'
+import { PartialAccumulator } from '../sessions/partial.ts'
 
 const HISTORY_PAGE_MESSAGES = 50
 
@@ -33,6 +35,9 @@ export class SessionHistorySource implements SessionHistoryFace {
     entries: readonly HistoryEntry[]
     value: SessionHistorySnapshot['inspection']
   } | null = null
+  private streamPublishToken: object | null = null
+  private streamBaseInspection: SessionHistorySnapshot['inspection'] | null = null
+  private streamPartial: PartialAccumulator | null = null
   private snapshotCache: SessionHistorySnapshot
   private readonly notifier = new Notifier(() => {
     this.snapshotCache = this.buildSnapshot()
@@ -125,7 +130,7 @@ export class SessionHistorySource implements SessionHistoryFace {
     if (this.state !== 'cold') {
       this.state = 'cold'
       this.error = null
-      this.notifier.markDirty()
+      this.publishDirtyNow()
     }
   }
 
@@ -143,7 +148,7 @@ export class SessionHistorySource implements SessionHistoryFace {
     this.hasMore = false
     this.state = 'cold'
     this.error = null
-    this.notifier.markDirty()
+    this.publishDirtyNow()
     void this.loadForConsumers()
   }
 
@@ -155,6 +160,9 @@ export class SessionHistorySource implements SessionHistoryFace {
     this.openPromise = null
     this.olderPromise = null
     this.liveBuffer = []
+    this.streamPublishToken = null
+    this.streamBaseInspection = null
+    this.streamPartial = null
   }
 
   private open(): Promise<void> {
@@ -188,7 +196,7 @@ export class SessionHistorySource implements SessionHistoryFace {
   private async doOpen(generation: number): Promise<void> {
     this.state = 'loading'
     this.error = null
-    this.notifier.markDirty()
+    this.publishDirtyNow()
     try {
       let { result } = await this.api.sessions.history({
         sessionId: this.sessionId,
@@ -222,7 +230,7 @@ export class SessionHistorySource implements SessionHistoryFace {
       /* v8 ignore next -- transportError always returns the error branch. */
       this.error = folded.ok ? null : folded.error
     } finally {
-      if (generation === this.generation) this.notifier.markDirty()
+      if (generation === this.generation) this.publishDirtyNow()
     }
   }
 
@@ -261,7 +269,7 @@ export class SessionHistorySource implements SessionHistoryFace {
     const settled = operation.finally(() => {
       if (this.olderPromise !== settled) return
       this.olderPromise = null
-      this.notifier.markDirty()
+      this.publishDirtyNow()
     })
     this.olderPromise = settled
     return settled
@@ -286,7 +294,7 @@ export class SessionHistorySource implements SessionHistoryFace {
     const buffered = this.liveBuffer
     this.liveBuffer = []
     for (const entry of buffered) this.appendLive(entry)
-    this.notifier.markDirty()
+    this.publishDirtyNow()
   }
 
   private acceptLive(entry: HistoryEntry): void {
@@ -301,8 +309,16 @@ export class SessionHistorySource implements SessionHistoryFace {
       void this.repairGap()
       return
     }
+    if (
+      entry.event.type === 'assistant/chunk'
+      && entry.event.data.chunk.type !== 'usage'
+    ) {
+      if (!this.appendIncrementalChunk(entry, entry.event)) return
+      this.publishStreamDirty()
+      return
+    }
     this.appendLive(entry)
-    this.notifier.markDirty()
+    this.publishDirtyNow()
   }
 
   private appendLive(entry: HistoryEntry): void {
@@ -311,6 +327,66 @@ export class SessionHistorySource implements SessionHistoryFace {
     this.entries = [...this.entries, entry]
   }
 
+  /** Append a chunk against the cached finalized projection; false means no visible publish. */
+  private appendIncrementalChunk(
+    entry: HistoryEntry,
+    event: SessionEvent<'assistant/chunk'>,
+  ): boolean {
+    const { turn, step, chunk } = event.data
+    if (!isVisibleAssistantChunk(chunk.type)) {
+      const inspection = this.currentInspection()
+      this.appendLive(entry)
+      this.inspectionCache = { entries: this.entries, value: inspection }
+      return false
+    }
+    const base = this.streamBaseInspection ?? this.currentInspection()
+    this.streamBaseInspection = base
+    if (
+      this.streamPartial === null
+      || this.streamPartial.turn !== turn
+      || this.streamPartial.step !== step
+    ) {
+      const current = base.partial
+      this.streamPartial = new PartialAccumulator(
+        turn,
+        step,
+        current?.turn === turn && current.step === step ? current.blocks : [],
+      )
+    }
+    this.streamPartial.push(chunk)
+    this.appendLive(entry)
+    this.inspectionCache = {
+      entries: this.entries,
+      value: { ...base, partial: this.streamPartial.toPartial() },
+    }
+    return true
+  }
+
+  /** Coalesce token-stream projection and rendering work to one publish per browser frame. */
+  private publishStreamDirty(): void {
+    if (this.streamPublishToken !== null) return
+    const token = {}
+    this.streamPublishToken = token
+    const publish = () => {
+      if (this.streamPublishToken !== token) return
+      this.streamPublishToken = null
+      this.notifier.markDirty()
+    }
+    if (typeof globalThis.requestAnimationFrame === 'function') {
+      globalThis.requestAnimationFrame(publish)
+    } else {
+      queueMicrotask(publish)
+    }
+  }
+
+  /** Publish structural changes immediately and invalidate an older scheduled stream publish. */
+  private publishDirtyNow(): void {
+    this.streamPublishToken = null
+    this.streamBaseInspection = null
+    this.streamPartial = null
+    this.notifier.markDirty()
+  }
+
   private async repairGap(): Promise<void> {
     if (this.stitching) return
     this.stitching = true
@@ -335,6 +411,16 @@ export class SessionHistorySource implements SessionHistoryFace {
   }
 
   private buildSnapshot(): SessionHistorySnapshot {
+    return {
+      state: this.state,
+      error: this.error,
+      hasMore: this.hasMore,
+      inspection: this.currentInspection(),
+    }
+  }
+
+  /** Inspection pinned to the source's current immutable entry array. */
+  private currentInspection(): SessionHistorySnapshot['inspection'] {
     if (this.inspectionCache?.entries !== this.entries) {
       const entries = this.entries
       this.inspectionCache = {
@@ -342,11 +428,14 @@ export class SessionHistorySource implements SessionHistoryFace {
         value: createHistoryInspection(() => entries),
       }
     }
-    return {
-      state: this.state,
-      error: this.error,
-      hasMore: this.hasMore,
-      inspection: this.inspectionCache.value,
-    }
+    return this.inspectionCache.value
   }
 }
+
+function isVisibleAssistantChunk(type: string): boolean {
+  return type === 'block-start'
+    || type === 'text-delta'
+    || type === 'reasoning-delta'
+    || type === 'tool-call-delta'
+    || type === 'block-end'
+}
diff --git a/packages/client/runtime/src/client/sessions/partial.ts b/packages/client/runtime/src/client/sessions/partial.ts
index 189febf253..242232f3c1 100644
--- a/packages/client/runtime/src/client/sessions/partial.ts
+++ b/packages/client/runtime/src/client/sessions/partial.ts
@@ -13,8 +13,18 @@ export class PartialAccumulator {
   private changed = true
   private snapshot: PartialAssistant
 
-  constructor(readonly turn: number, readonly step: number) {
-    this.snapshot = { turn, step, blocks: [] }
+  /**
+   * @param turn - Owning agent turn.
+   * @param step - Owning model step.
+   * @param initialBlocks - Materialized prefix when accumulation begins after history replay.
+   */
+  constructor(
+    readonly turn: number,
+    readonly step: number,
+    initialBlocks: readonly AssistantBlock[] = [],
+  ) {
+    this.blocks = [...initialBlocks]
+    this.snapshot = { turn, step, blocks: initialBlocks }
   }
 
   /**
diff --git a/packages/client/runtime/tests/fake-api.ts b/packages/client/runtime/tests/fake-api.ts
index 85dd4c5a55..041ea02dee 100644
--- a/packages/client/runtime/tests/fake-api.ts
+++ b/packages/client/runtime/tests/fake-api.ts
@@ -62,7 +62,7 @@ export class FakeApiClient implements IApiClient {
   // Programmable slots (defaults answer OK-empty); reassign per case.
   onList: (payload: unknown) => Promise<RpcResponse<{ items: never[] }>> = () => Promise.resolve(ok({ items: [] }))
   onCreate: (payload: unknown) => Promise<RpcResponse<{ sessionId: SessionId }>> = () => Promise.resolve(ok({ sessionId: 'fk-new' as SessionId }))
-  readonly defaultModel: ModelTarget = { provider: 'deepseek', model: 'deepseek-v4-flash' }
+  readonly defaultModel: ModelTarget = { provider: 'deepseek-official', model: 'deepseek-v4-flash' }
   onRename: (payload: unknown) => Promise<RpcResponse<{ title: string; seq: number }>> = () => Promise.resolve(ok({ title: 'fk-renamed', seq: 0 }))
   onFork: (payload: unknown) => Promise<RpcResponse<{ sessionId: SessionId }>> = () => Promise.resolve(ok({ sessionId: 'fk-fork' as SessionId }))
   onHistory: (payload: { sessionId: SessionId; beforeSeq?: number; maxMessages?: number })
@@ -72,7 +72,7 @@ export class FakeApiClient implements IApiClient {
   onModels: (payload: unknown) => Promise<RpcResponse<SessionModels>> = () => Promise.resolve(ok({
     current: this.defaultModel,
     groups: [{
-      id: 'deepseek',
+      id: 'deepseek-official',
       name: 'DeepSeek',
       models: [{ id: 'deepseek-v4-flash', name: 'DeepSeek V4 Flash' }],
     }],
@@ -183,6 +183,24 @@ export class FakeApiClient implements IApiClient {
     clear: payload => this.record('goal.clear', payload, Promise.resolve(ok({ cleared: true as const }))),
   }
 
+  readonly settings: IApiClient['settings'] = {
+    describe: payload => this.record('settings.describe', payload, Promise.resolve(ok({ writable: true, namespaces: [] }))),
+    update: payload => this.record('settings.update', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+    replace: payload => this.record('settings.replace', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+    mutate: payload => this.record('settings.mutate', payload, Promise.resolve(ok({ ns: 'fake', schema: {}, value: {}, applies: 'live' as const, secrets: [], revision: 0 }))),
+  }
+
+  readonly credentials: IApiClient['credentials'] = {
+    describe: payload => this.record('credentials.describe', payload, Promise.resolve(ok({ credentials: {} }))),
+    set: payload => this.record('credentials.set', payload, Promise.resolve(ok({}))),
+    unset: payload => this.record('credentials.unset', payload, Promise.resolve(ok({}))),
+  }
+
+  readonly llm: IApiClient['llm'] = {
+    providers: payload => this.record('llm.providers', payload, Promise.resolve(ok({ providers: [] }))),
+    models: payload => this.record('llm.models', payload, Promise.resolve(ok({ groups: [], failures: [] }))),
+  }
+
   /** When true, streams never fire onOpen (misbehaving-carrier material for the handshake timeout guard). */
   suppressStreamOpen = false
 
diff --git a/packages/client/runtime/tests/manager.spec.ts b/packages/client/runtime/tests/manager.spec.ts
index afe6308249..6a0f30f4c6 100644
--- a/packages/client/runtime/tests/manager.spec.ts
+++ b/packages/client/runtime/tests/manager.spec.ts
@@ -378,7 +378,7 @@ describe('connected generation', () => {
     api.onHistory = () => Promise.resolve(ok({
       events: entries(plainTurn(0, 0, 'a', 'b')) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-chat' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-chat' },
     }))
     const manager = new SessionManager(api)
     const openedSession = manager.get(S1)
diff --git a/packages/client/runtime/tests/partial.spec.ts b/packages/client/runtime/tests/partial.spec.ts
index 25681ea4cc..c1df190c33 100644
--- a/packages/client/runtime/tests/partial.spec.ts
+++ b/packages/client/runtime/tests/partial.spec.ts
@@ -41,6 +41,12 @@ describe('PartialAccumulator', () => {
     expect(acc.toPartial().blocks).toEqual([{ kind: 'reasoning', text: '思考' }])
   })
 
+  it('continues from a materialized history prefix', () => {
+    const acc = new PartialAccumulator(1, 0, [{ kind: 'text', text: '已有' }])
+    acc.push(chunk({ type: 'text-delta', index: 0, text: '增量' }))
+    expect(acc.toPartial().blocks).toEqual([{ kind: 'text', text: '已有增量' }])
+  })
+
   it('folds tool-call deltas: first id pins callId, late name overrides, argsRaw concatenates', () => {
     const acc = new PartialAccumulator(1, 0)
     acc.push(chunk({ type: 'tool-call-delta', index: 0, id: 'c1', argumentsDelta: '{"a"' }))
diff --git a/packages/client/runtime/tests/session-history-source.spec.ts b/packages/client/runtime/tests/session-history-source.spec.ts
index 1375338e90..bcf25cd933 100644
--- a/packages/client/runtime/tests/session-history-source.spec.ts
+++ b/packages/client/runtime/tests/session-history-source.spec.ts
@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest'
+import { afterEach, describe, expect, it, vi } from 'vitest'
 import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import { SessionHistorySource } from '../src/client/session-history/source.ts'
@@ -7,6 +7,10 @@ import { entries, ev, plainTurn } from './event-script.ts'
 
 const SID = 'history-s1' as SessionId
 
+afterEach(() => {
+  vi.unstubAllGlobals()
+})
+
 function histResponse(events: SessionEvent[], hasMore = false) {
   return Promise.resolve(ok({ events: entries(events) as never[], hasMore }))
 }
@@ -52,6 +56,71 @@ describe('SessionHistorySource', () => {
       .toEqual([1, 3, 6])
   })
 
+  it('publishes multiple assistant chunks once per browser frame', async () => {
+    const api = new FakeApiClient()
+    api.onHistory = () => histResponse(plainTurn(0, 0, '问', '答'))
+    const source = new SessionHistorySource(SID, api)
+    await source.loadAll()
+    const frames: FrameRequestCallback[] = []
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) => {
+      frames.push(callback)
+      return frames.length
+    })
+    let notifications = 0
+    const unsubscribe = source.subscribe(() => { notifications++ })
+    const before = source.getSnapshot().inspection
+    const finalizedNodes = before.eventNodes
+    const requests = before.requests
+    const contexts = before.contexts
+
+    for (const event of [
+      ev.chunkStart(6, 1),
+      ev.chunkText(7, 1, 'stream '),
+      ev.chunkText(8, 1, 'content'),
+    ]) {
+      source.handleMuxFrame({
+        type: 'session/event',
+        sessionId: SID,
+        event,
+      })
+    }
+
+    expect(frames).toHaveLength(1)
+    expect(notifications).toBe(0)
+    frames[0]?.(0)
+    await Promise.resolve()
+
+    expect(notifications).toBe(1)
+    const streamed = source.getSnapshot().inspection
+    expect(streamed.eventNodes).toBe(finalizedNodes)
+    expect(streamed.requests).toBe(requests)
+    expect(streamed.contexts).toBe(contexts)
+    expect(streamed.partial?.blocks).toEqual([
+      { kind: 'text', text: 'stream content' },
+    ])
+
+    source.handleMuxFrame({
+      type: 'session/event',
+      sessionId: SID,
+      event: ev.chunkText(9, 1, ' then final'),
+    })
+    source.handleMuxFrame({
+      type: 'session/event',
+      sessionId: SID,
+      event: ev.assistant(10, 1, 'stream content then final'),
+    })
+    await Promise.resolve()
+
+    expect(notifications).toBe(2)
+    const finalized = source.getSnapshot().inspection
+    expect(finalized.eventNodes).not.toBe(finalizedNodes)
+    expect(finalized.partial).toBeNull()
+    frames[1]?.(0)
+    await Promise.resolve()
+    expect(notifications).toBe(2)
+    unsubscribe()
+  })
+
   it('stops loading when an older page fails to advance', async () => {
     const api = new FakeApiClient()
     api.onHistory = payload => payload.beforeSeq === undefined
diff --git a/packages/client/runtime/tests/session.spec.ts b/packages/client/runtime/tests/session.spec.ts
index c80f046ceb..e62e14bd48 100644
--- a/packages/client/runtime/tests/session.spec.ts
+++ b/packages/client/runtime/tests/session.spec.ts
@@ -78,7 +78,7 @@ describe('open', () => {
     gate.resolve(ok({
       events: entries(page) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     }))
     await opening
     const seqs = session.getSnapshot().nodes.map(n => n.seq)
@@ -135,7 +135,7 @@ describe('live event path', () => {
     expect(session.getSnapshot().composerPhase).toBe('blank')
     const feed = (event: SessionEvent) => { session.handleMuxEnvelope('r' as never, { type: 'session/event', sessionId: SID, event }) }
     feed(ev.commandRun(0, 'cmd-perm', 'permission', ' danger-full-access'))
-    feed(ev.commandDone(1, 'cmd-perm', 'success', 'Permission preset: danger-full-access.'))
+    feed(ev.commandDone(1, 'cmd-perm', 'success', 'preset danger-full-access'))
     const snapshot = session.getSnapshot()
     expect(snapshot.nodes.at(-1)).toMatchObject({ kind: 'command', name: 'permission' })
     expect(snapshot.composerPhase).toBe('blank')
@@ -255,7 +255,7 @@ describe('paging', () => {
     gate.resolve(ok({
       events: entries(plainTurn(0, 0, 'a', 'b')) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     }))
     await Promise.all([first, second])
     expect(api.callsOf('session.history')).toHaveLength(2) // open + one page, not two
@@ -571,7 +571,7 @@ describe('remaining branches', () => {
     stale.resolve(ok({
       events: entries(plainTurn(0, 0, '旧', '代')) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'stale' },
+      modelTarget: { provider: 'deepseek-official', model: 'stale' },
     })) // success, but its generation is gone
     await Promise.all([opening, resynced])
     expect(session.getSnapshot().nodes.map(n => n.seq)).toEqual([7, 9]) // only the fresh generation's window
@@ -594,7 +594,7 @@ describe('remaining branches', () => {
     secondPull.resolve(ok({
       events: entries([...plainTurn(0, 0, 'a', 'b'), ...plainTurn(6, 1, 'c', 'd')]) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'stale' },
+      modelTarget: { provider: 'deepseek-official', model: 'stale' },
     }))
     await Promise.all([opening, resynced])
     expect(session.getSnapshot().openState).toBe('open')
@@ -612,7 +612,7 @@ describe('remaining branches', () => {
     repairPull.resolve(ok({
       events: entries(plainTurn(0, 0, '旧', '页')) as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'stale' },
+      modelTarget: { provider: 'deepseek-official', model: 'stale' },
     })) // repair result: stale, dropped
     await resynced
     expect(session.getSnapshot().nodes.map(n => n.seq)).toEqual([7, 9])
@@ -657,7 +657,7 @@ describe('remaining branches', () => {
         { event: ev.toolResult(7, 1, 'h1', 'done'), view: { for: 'result', view: { card: 'generic', title: '历史果' } } },
       ] as never[],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     }))
     await session.open()
     expect(session.getSnapshot().nodes.at(-1)).toMatchObject({
diff --git a/packages/client/runtime/tests/wire-events.spec.ts b/packages/client/runtime/tests/wire-events.spec.ts
index 01a6691a4b..fd7858d60c 100644
--- a/packages/client/runtime/tests/wire-events.spec.ts
+++ b/packages/client/runtime/tests/wire-events.spec.ts
@@ -44,6 +44,22 @@ describe('wire event bridge', () => {
     expect(changed).toBe(1)
   })
 
+  it('broadcasts the settings/credentials/models invalidations with their frame payloads', async () => {
+    const bench = await mount()
+    const seen: unknown[][] = []
+    bench.ctx.on('settings/changed', ns => seen.push(['settings', ns]))
+    bench.ctx.on('credentials/changed', ref => seen.push(['credentials', ref]))
+    bench.ctx.on('models/changed', () => seen.push(['models']))
+    bench.sinks?.onHostEnvelope?.({ rpcId: 'r3' as never, payload: { type: 'host/settings-changed', ns: 'llm-pi-ai' } })
+    bench.sinks?.onHostEnvelope?.({ rpcId: 'r4' as never, payload: { type: 'host/credentials-changed', ref: 'OPENAI_API_KEY' } })
+    bench.sinks?.onHostEnvelope?.({ rpcId: 'r5' as never, payload: { type: 'host/models-changed' } })
+    expect(seen).toEqual([
+      ['settings', 'llm-pi-ai'],
+      ['credentials', 'OPENAI_API_KEY'],
+      ['models'],
+    ])
+  })
+
   it('broadcasts connection/reset on every established generation (reconnect invalidation)', async () => {
     const bench = await mount()
     let resets = 0
diff --git a/packages/client/schema-form/README.i18n.yaml b/packages/client/schema-form/README.i18n.yaml
new file mode 100644
index 0000000000..f6e939d878
--- /dev/null
+++ b/packages/client/schema-form/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/client/schema-form/README.md
+README.md: 5dcef89cbffc8b03c3f2d874e870fa9767360d3c
+README.zh.md: a82acb7d85005da25858fb17cf42b49f06ae59db
diff --git a/packages/client/schema-form/README.md b/packages/client/schema-form/README.md
new file mode 100644
index 0000000000..5dcef89cbf
--- /dev/null
+++ b/packages/client/schema-form/README.md
@@ -0,0 +1,23 @@
+# @deepseek-ai/dsh-client-schema-form
+
+English | [中文](README.zh.md)
+
+Schema/draft model layer for settings editors. The wire's `settings.describe` carries each namespace's serialized schemastery schema (`schema.toJSON()` ref envelope); `rehydrateSchema` turns it back into a live validator with `new Schema(json)` — the same schema object that validates a section on the host validates drafts in the browser, so client-side validation never drifts from the seam's. Editors render their own controls (the Models page hand-writes its card around the fields it probes here); this package owns no React and no rendering.
+
+## Contract
+
+The unit of editing is a **draft user section**: a plain object edited immutably (`setPath` materializes intermediates, `deletePath` is the per-field reset — dropping the key falls the resolved value back to the composition base and schema defaults). A field's presence in the draft marks it **overridden** (`hasPath`) — presence semantics, not value comparison, exactly mirroring the settings seam's layering. `nodeAtPath` resolves the schema node addressed by a configurable-provider directory `settingsPath` (object properties by name, dict entries through `inner`), so an editor can probe which fields a provider's profile carries (and their `meta.role`) before deciding what to render; an unresolvable path returns `undefined` so the caller degrades loudly instead of rendering a wrong subtree. `validateDraft(schema, draft)` runs the rehydrated validator and returns its failure message, letting pages reject an invalid draft before writing.
+
+## Model Experience
+
+None, as this package backs browser configuration editors; nothing here reaches a model request.
+
+#### KV Cache effect
+
+None; this package neither assembles nor sends a provider request.
+
+## Known Limitations and Deferred Work
+
+- **Rehydration executes the served envelope** — `rehydrateSchema` reconstructs a live schemastery validator, and schemastery revives serialized callbacks through `new Function`, so the schema envelope is executable content rather than inert data. That is acceptable only because the envelope comes from the same host that serves the page; a browser schema protocol should carry a description the client cannot execute, which is deferred with the settings seam's [wire-boundary work](../../settings/settings/README.md#known-limitations-and-deferred-work).
+- **Validation is draft-level, not per-field** — `validateDraft` reports schemastery's first failure message (which names the `$.path`); per-field error mapping is deferred until a consumer needs it.
+- **No generic renderer** — a schema-driven form component was built and then replaced by the hand-written Models editor ([Agent Note](../../../.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md)); if a future page needs to edit arbitrary sections, it starts from these helpers, not from a resurrected generic renderer, unless the note's trade-off changes.
diff --git a/packages/client/schema-form/README.zh.md b/packages/client/schema-form/README.zh.md
new file mode 100644
index 0000000000..a82acb7d85
--- /dev/null
+++ b/packages/client/schema-form/README.zh.md
@@ -0,0 +1,23 @@
+# @deepseek-ai/dsh-client-schema-form
+
+[English](README.md) | 中文
+
+面向 settings 编辑器的 schema／草稿模型层。wire 侧的 `settings.describe` 携带每个 namespace 的序列化 schemastery schema（`schema.toJSON()` 的 ref 信封）；`rehydrateSchema` 用 `new Schema(json)` 将其还原（rehydrate）为活的校验器——在宿主上校验分节的那份 schema 对象，就是在浏览器里校验草稿的那份对象，因此客户端校验绝不会偏离 seam 侧的校验。编辑器各自渲染自己的控件（Models 页围绕它在此探测到的字段手写自己的卡片）；该包（package）不含任何 React，也不做任何渲染。
+
+## 契约
+
+编辑的单元是**用户分节草稿**：一个以不可变方式编辑的普通对象（`setPath` 会物化中间对象，`deletePath` 即逐字段重置——去掉该键，解析值便回退到组合 base 与 schema 默认值）。字段只要出现在草稿中就被标记为**已覆盖**（`hasPath`）——判定采用存在性语义而非值比较，与 settings seam 的分层方式严格对应。`nodeAtPath` 解析可配置提供方目录 `settingsPath` 所寻址的 schema 节点（object 属性按名称解析，dict 条目经由 `inner`），编辑器因此可以在决定渲染什么之前，先探测某提供方的 profile 携带哪些字段（及其 `meta.role`）；无法解析的路径返回 `undefined`，调用方因此会大声降级，而不是渲染出错误的子树。`validateDraft(schema, draft)` 运行还原出的校验器并返回其失败消息，页面因此可以在写入前拒绝无效草稿。
+
+## Model Experience
+
+无。该包支撑的是浏览器配置编辑器；这里没有任何内容进入模型请求。
+
+#### KV Cache effect
+
+无；该包既不组装也不发送提供方请求。
+
+## Known Limitations and Deferred Work
+
+- **重建 schema 会执行所收到的信封**——`rehydrateSchema` 会重建一个活的 schemastery 校验器，而 schemastery 通过 `new Function` 复活序列化过的 callback，因此 schema 信封是可执行内容，而非惰性数据。这只有在信封来自提供该页面的同一 host 时才可接受；面向浏览器的 schema 协议应当传递客户端无法执行的描述，此项与 settings seam 的[协议边界工作](../../settings/settings/README.md#known-limitations-and-deferred-work)一并暂缓。
+- **校验是草稿级的，而非逐字段**——`validateDraft` 报告 schemastery 的第一条失败消息（其中会点名 `$.path`）；逐字段的报错映射延后到出现需要它的消费方再做。
+- **没有通用渲染器**——一个 schema 驱动的表单组件曾被构建出来，随后被手写的 Models 编辑器取代（[Agent Note（agent 决策记录）](../../../.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md)）；若未来有页面需要编辑任意分节，起点是这些辅助函数，而不是复活后的通用渲染器——除非该 note 的权衡发生变化。
diff --git a/packages/client/schema-form/package.json b/packages/client/schema-form/package.json
new file mode 100644
index 0000000000..175133894a
--- /dev/null
+++ b/packages/client/schema-form/package.json
@@ -0,0 +1,40 @@
+{
+  "name": "@deepseek-ai/dsh-client-schema-form",
+  "description": "Schema/draft model layer for settings editors: rehydrates a serialized schemastery schema, validates drafts, and edits them immutably by path",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "license": "BSD-3-Clause",
+  "dependencies": {
+    "schemastery": "^3.18.0"
+  },
+  "peerDependencies": {
+    "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "devDependencies": {
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/types/**/*.d.ts",
+    "lib/types/**/*.d.ts.map",
+    "src"
+  ]
+}
diff --git a/packages/client/schema-form/src/index.ts b/packages/client/schema-form/src/index.ts
new file mode 100644
index 0000000000..3a8c35edcb
--- /dev/null
+++ b/packages/client/schema-form/src/index.ts
@@ -0,0 +1,12 @@
+/**
+ * Schema/draft model layer for settings editors: rehydrate the wire's
+ * serialized schemastery envelope, resolve nodes by settings path, validate
+ * drafts, and edit them immutably by path. Editors render their own controls
+ * (the Models page hand-writes its layout) on top of these helpers.
+ * @module @deepseek-ai/dsh-client-schema-form
+ */
+
+export {
+  deletePath, getPath, hasPath, nodeAtPath, rehydrateSchema, setPath, validateDraft,
+} from './model.ts'
+export type { SchemaNode } from './model.ts'
diff --git a/packages/client/schema-form/src/invariant.ts b/packages/client/schema-form/src/invariant.ts
new file mode 100644
index 0000000000..f60f951fb5
--- /dev/null
+++ b/packages/client/schema-form/src/invariant.ts
@@ -0,0 +1,32 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-client-schema-form`.
+ * @module @deepseek-ai/dsh-client-schema-form/invariant
+ */
+
+/* jscpd:ignore-start */
+import type { Context } from 'cordis'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-client-schema-form'
+
+/** Cordis companion plugin name. */
+export const name = 'client-schema-form-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * No runtime invariant: a pure schema/draft helper library — it emits no
+ * cordis events and owns no cross-plugin mutable relation; draft
+ * immutability, schema rehydration, and path-edit round trips are asserted
+ * directly by this package's model specs.
+ */
+const install: InvariantInstaller = () => {}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */
diff --git a/packages/client/schema-form/src/model.ts b/packages/client/schema-form/src/model.ts
new file mode 100644
index 0000000000..5377012141
--- /dev/null
+++ b/packages/client/schema-form/src/model.ts
@@ -0,0 +1,151 @@
+/**
+ * Schema introspection and draft-editing helpers behind settings editors.
+ * The serialized schemastery envelope (`schema.toJSON()`) rehydrates into a
+ * live validator whose node relations (`dict`/`inner`) editors probe for
+ * field presence and roles; drafts are edited immutably by path.
+ * @module @deepseek-ai/dsh-client-schema-form/model
+ */
+
+import Schema from 'schemastery'
+
+/** Live schemastery node; the renderer reads only its structural relations. */
+export type SchemaNode = Schema
+
+/**
+ * Rehydrate a serialized schema envelope into a live validator/node tree.
+ * @param serialized - `schema.toJSON()` output received over the wire.
+ * @returns the root schema node.
+ */
+export function rehydrateSchema(serialized: unknown): SchemaNode {
+  return new Schema(serialized as Schema)
+}
+
+/**
+ * Validate a draft against a rehydrated schema.
+ * @param schema - rehydrated root node.
+ * @param draft - candidate value.
+ * @returns the validation failure message, or `undefined` when the draft passes.
+ */
+export function validateDraft(schema: SchemaNode, draft: unknown): string | undefined {
+  try {
+    ;(schema as unknown as (value: unknown) => unknown)(draft)
+    return undefined
+  } catch (error) {
+    return error instanceof Error ? error.message : String(error)
+  }
+}
+
+/**
+ * Resolve the schema node at a settings path (the configurable-provider
+ * directory's `settingsPath` vocabulary): object properties by name, dict
+ * entries through `inner`. An unresolvable segment returns `undefined` so
+ * the caller falls back instead of rendering a wrong subtree.
+ * @param root - rehydrated section root node.
+ * @param path - key path from the section root.
+ * @returns the node describing that position, or `undefined`.
+ */
+export function nodeAtPath(root: SchemaNode, path: readonly string[]): SchemaNode | undefined {
+  let node: SchemaNode | undefined = root
+  for (const key of path) {
+    if (node === undefined) return undefined
+    if (node.type === 'object') node = (node.dict as Record<string, SchemaNode> | undefined)?.[key]
+    else if (node.type === 'dict' || node.type === 'array') node = node.inner as SchemaNode | undefined
+    else return undefined
+  }
+  return node
+}
+
+/**
+ * Read a nested value by path.
+ * @param value - root value (draft or fallback layer).
+ * @param path - key path from the root; array indexes as strings.
+ * @returns the value at the path, or `undefined` along a missing branch.
+ */
+export function getPath(value: unknown, path: readonly string[]): unknown {
+  let current: unknown = value
+  for (const key of path) {
+    if (Array.isArray(current)) {
+      current = current[Number(key)]
+      continue
+    }
+    if (typeof current !== 'object' || current === null) return undefined
+    current = (current as Record<string, unknown>)[key]
+  }
+  return current
+}
+
+/**
+ * Whether a draft explicitly carries the path (its presence marks a user
+ * override, independent of the value stored there).
+ * @param value - root value (draft or fallback layer).
+ * @param path - key path from the root; array indexes as strings.
+ * @returns whether the path's final key exists on its parent.
+ */
+export function hasPath(value: unknown, path: readonly string[]): boolean {
+  if (path.length === 0) return value !== undefined
+  const parent = getPath(value, path.slice(0, -1))
+  const key = path[path.length - 1] as string
+  if (Array.isArray(parent)) return Number(key) < parent.length
+  if (typeof parent !== 'object' || parent === null) return false
+  return key in parent
+}
+
+function cloneContainer(container: unknown, key: string): Record<string, unknown> | unknown[] {
+  if (Array.isArray(container)) return [...container as unknown[]]
+  if (typeof container === 'object' && container !== null) return { ...container as Record<string, unknown> }
+  // A missing intermediate materializes as the container the next key needs.
+  return /^\d+$/.test(key) ? [] : {}
+}
+
+/** Clone the container spine down to the leaf's parent, materializing missing intermediates. */
+function cloneSpine(root: Record<string, unknown>, path: readonly string[]): {
+  result: Record<string, unknown>
+  parent: Record<string, unknown> | unknown[]
+  leaf: string
+} {
+  const result = { ...root }
+  let target: Record<string, unknown> | unknown[] = result
+  for (let i = 0; i < path.length - 1; i++) {
+    const key = path[i] as string
+    const child = cloneContainer(
+      Array.isArray(target) ? target[Number(key)] : (target)[key],
+      path[i + 1] as string,
+    )
+    if (Array.isArray(target)) target[Number(key)] = child
+    else (target)[key] = child
+    target = child
+  }
+  return { result, parent: target, leaf: path[path.length - 1] as string }
+}
+
+/**
+ * Immutably set a nested value, materializing missing intermediate containers.
+ * @param root - draft root (never mutated).
+ * @param path - non-empty key path.
+ * @param value - value to store at the path.
+ * @returns the new draft root.
+ */
+export function setPath(root: Record<string, unknown>, path: readonly string[], value: unknown): Record<string, unknown> {
+  if (path.length === 0) throw new Error('schema-form: setPath needs a non-empty path')
+  const { result, parent, leaf } = cloneSpine(root, path)
+  if (Array.isArray(parent)) parent[Number(leaf)] = value
+  else parent[leaf] = value
+  return result
+}
+
+/**
+ * Immutably remove a nested key (the per-field reset: the resolved value
+ * falls back to the composition base and schema defaults). Removing along a
+ * missing branch returns the root unchanged.
+ * @param root - draft root (never mutated).
+ * @param path - non-empty key path.
+ * @returns the new draft root.
+ */
+export function deletePath(root: Record<string, unknown>, path: readonly string[]): Record<string, unknown> {
+  if (path.length === 0) throw new Error('schema-form: deletePath needs a non-empty path')
+  if (!hasPath(root, path)) return root
+  const { result, parent, leaf } = cloneSpine(root, path)
+  if (Array.isArray(parent)) parent.splice(Number(leaf), 1)
+  else Reflect.deleteProperty(parent, leaf)
+  return result
+}
diff --git a/packages/client/schema-form/tests/invariant.spec.ts b/packages/client/schema-form/tests/invariant.spec.ts
new file mode 100644
index 0000000000..7f7ba10dd8
--- /dev/null
+++ b/packages/client/schema-form/tests/invariant.spec.ts
@@ -0,0 +1,12 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import * as SchemaFormInvariant from '@deepseek-ai/dsh-client-schema-form/invariant'
+import InvariantService from '@deepseek-ai/dsh-invariants'
+
+describe('invariant companion', () => {
+  it('registers under the package name with an empty installer', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService, { enabled: true })
+    await expect(ctx.plugin(SchemaFormInvariant).await()).resolves.toBeDefined()
+  })
+})
diff --git a/packages/client/schema-form/tests/model.spec.ts b/packages/client/schema-form/tests/model.spec.ts
new file mode 100644
index 0000000000..81e81e1992
--- /dev/null
+++ b/packages/client/schema-form/tests/model.spec.ts
@@ -0,0 +1,100 @@
+import { describe, expect, it } from 'vitest'
+import Schema from 'schemastery'
+import {
+  deletePath, getPath, hasPath, nodeAtPath, rehydrateSchema, setPath, validateDraft,
+} from '../src/model.ts'
+
+const Wire = (schema: Schema): unknown => JSON.parse(JSON.stringify(schema.toJSON()))
+
+describe('rehydration and validation', () => {
+  it('rehydrates a serialized envelope into a working validator', () => {
+    const root = rehydrateSchema(Wire(Schema.object({ name: Schema.string().required() })))
+    expect(validateDraft(root, { name: 'ok' })).toBeUndefined()
+    expect(validateDraft(root, { name: 42 })).toContain('name')
+  })
+
+  it('stringifies non-Error validation throws', () => {
+    const hostile = (() => {
+      throw 'plain-string failure'
+    }) as unknown as Parameters<typeof validateDraft>[0]
+    expect(validateDraft(hostile, {})).toBe('plain-string failure')
+  })
+})
+
+describe('path helpers', () => {
+  const root = { providers: { openai: { baseURL: 'https://x' } }, models: [{ id: 'a' }] }
+
+  it('reads nested object and array paths', () => {
+    expect(getPath(root, [])).toBe(root)
+    expect(getPath(root, ['providers', 'openai', 'baseURL'])).toBe('https://x')
+    expect(getPath(root, ['models', '0', 'id'])).toBe('a')
+    expect(getPath(root, ['providers', 'missing', 'x'])).toBeUndefined()
+    expect(getPath(root, ['providers', 'openai', 'baseURL', 'deep'])).toBeUndefined()
+  })
+
+  it('reports draft presence by key existence, not value truthiness', () => {
+    expect(hasPath({ flag: false }, ['flag'])).toBe(true)
+    expect(hasPath({ nested: { key: undefined } }, ['nested', 'key'])).toBe(true)
+    expect(hasPath({}, ['missing'])).toBe(false)
+    expect(hasPath({ leaf: 'x' }, ['leaf', 'deeper'])).toBe(false)
+    expect(hasPath({ models: ['a'] }, ['models', '0'])).toBe(true)
+    expect(hasPath({ models: ['a'] }, ['models', '1'])).toBe(false)
+    expect(hasPath({ root: true }, [])).toBe(true)
+    expect(hasPath(undefined, [])).toBe(false)
+  })
+
+  it('sets nested paths immutably, materializing containers by key shape', () => {
+    const draft = {}
+    const next = setPath(draft, ['providers', 'openai', 'baseURL'], 'https://y')
+    expect(draft).toEqual({})
+    expect(next).toEqual({ providers: { openai: { baseURL: 'https://y' } } })
+    const withArray = setPath(next, ['models', '0'], { id: 'a' })
+    expect(withArray).toEqual({ providers: { openai: { baseURL: 'https://y' } }, models: [{ id: 'a' }] })
+    const replaced = setPath(withArray, ['models', '0', 'id'], 'b')
+    expect(replaced.models).toEqual([{ id: 'b' }])
+    expect((withArray as { models: unknown[] }).models).toEqual([{ id: 'a' }])
+    expect(() => setPath({}, [], 'x')).toThrow(/non-empty path/)
+  })
+
+  it('deletes nested paths immutably and splices array indexes', () => {
+    const draft = { providers: { openai: { baseURL: 'https://x', apiKey: 'k' } }, models: ['a', 'b'] }
+    const withoutKey = deletePath(draft, ['providers', 'openai', 'apiKey'])
+    expect(withoutKey).toEqual({ providers: { openai: { baseURL: 'https://x' } }, models: ['a', 'b'] })
+    expect(draft.providers.openai.apiKey).toBe('k')
+    const withoutModel = deletePath(withoutKey, ['models', '0'])
+    expect(withoutModel.models).toEqual(['b'])
+    expect(deletePath(draft, ['providers', 'missing', 'x'])).toBe(draft)
+    expect(() => deletePath({}, [])).toThrow(/non-empty path/)
+  })
+
+  it('deletes keys through array intermediates immutably', () => {
+    const draft = { models: [{ id: 'a', contextWindow: 1 }] }
+    const next = deletePath(draft, ['models', '0', 'contextWindow'])
+    expect(next).toEqual({ models: [{ id: 'a' }] })
+    expect(draft.models[0]).toEqual({ id: 'a', contextWindow: 1 })
+  })
+})
+
+describe('nodeAtPath', () => {
+  const Root = Schema.object({
+    providers: Schema.dict(Schema.object({ baseURL: Schema.string() })),
+    models: Schema.array(Schema.object({ id: Schema.string() })),
+    leaf: Schema.string(),
+  })
+
+  it('resolves object, dict, and array positions', () => {
+    const root = rehydrateSchema(Wire(Root))
+    expect(nodeAtPath(root, [])).toBe(root)
+    expect(nodeAtPath(root, ['providers', 'openai'])?.type).toBe('object')
+    expect(nodeAtPath(root, ['providers', 'openai', 'baseURL'])?.type).toBe('string')
+    expect(nodeAtPath(root, ['models', '0', 'id'])?.type).toBe('string')
+    expect(nodeAtPath(root, ['missing'])).toBeUndefined()
+    expect(nodeAtPath(root, ['missing', 'deeper'])).toBeUndefined()
+    expect(nodeAtPath(root, ['leaf', 'below'])).toBeUndefined()
+  })
+
+  it('tolerates structural nodes missing their relation maps', () => {
+    expect(nodeAtPath({ type: 'object' } as never, ['x'])).toBeUndefined()
+    expect(nodeAtPath({ type: 'dict' } as never, ['x'])).toBeUndefined()
+  })
+})
diff --git a/packages/client/schema-form/tsconfig.json b/packages/client/schema-form/tsconfig.json
new file mode 100644
index 0000000000..a47bdb4ecb
--- /dev/null
+++ b/packages/client/schema-form/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/schemastery"
+    },
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}
diff --git a/packages/client/ui-conversation/README.i18n.yaml b/packages/client/ui-conversation/README.i18n.yaml
index ddb93caa18..c124521092 100644
--- a/packages/client/ui-conversation/README.i18n.yaml
+++ b/packages/client/ui-conversation/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-conversation/README.md
-README.md: 60000c35c3e30883c4b29cc8410d30e58021318c
-README.zh.md: 8f9fe7278d2d4bf5251582867de44290d0727710
+README.md: bfb56dc52406e1377cd84c87866a644ade10293a
+README.zh.md: e09bdcc4bebd8176a3061b221e07ae73a7a8941c
diff --git a/packages/client/ui-conversation/README.md b/packages/client/ui-conversation/README.md
index 60000c35c3..bfb56dc524 100644
--- a/packages/client/ui-conversation/README.md
+++ b/packages/client/ui-conversation/README.md
@@ -18,7 +18,7 @@ A tool call declaring the `terminal` render intent renders its command output in
 
 Tool rows are slots too — the standalone tool ring (`ToolViewRegistry`/`ctx.toolviews`/outlet) is retired. The chat entry declares the keyed `'conversation.chat.toolview'` hole (session scope; the key space is runtime-open); its render site dispatches per row via `entryKey: toolName` with `GenericToolCard` as the call-site `fallback`. The owner payload is the uniform `ToolRowOwnerProps` (`callId`/`toolName`/`block`/`openFile`) and `ToolRowProps` pre-composes it with the session standard kit. A registrant is a plain plugin: `ctx.slots.register({ name: 'conversation.chat.toolview', key: '<tool>', inject? }, Row)` with `inject: ['slots', 'conversation']` as the load-order seam (apply mounts ConversationService after the chat registration, so the service being present guarantees the slot is declared); session differentiation happens inside the component (`useSessions` reading `parentId` — the bash sample is the third-party-posture exemplar). Trajectory/waterfall toolview slots share this shape and land with their own render sites (RendersCheck rejects a declaration nobody renders).
 
-The todo surfaces are two registrations over that shape, both plain registrant plugins with `inject: ['slots', 'conversation']`. `TodoRow` takes the `'conversation.chat.toolview'` key `todo_write` and summarizes what the call attempted (`<done>/<total> 已完成 · <active item>` parsed from its args, falling back to the generic summary on malformed or wrongly-shaped model JSON, and keeping the generic dot for non-ok execution states so a cancelled call never reads as a completed update). `TodoDock` takes the `'conversation.input.dock'` list slot at `order: 10` — between Goal and Queue — and is the plan strip: it reads the host-computed `todos` projection via `useProjection` (standing plan: latest `todo/write` with no later `turn/start`) and renders `TodoPanel`, which takes the plain list, hides itself while the list is empty, and starts collapsed as a header of title plus `"<done>/<total> tasks · <n> in progress"` (status glyphs are the figma check / progress / dashed-pending set). The dock adapter owns the selection so the panel stays a pure function of its props; the standing list lives here rather than in the row so the row stays one line. Anything the input-zone composer chain hides (a `conversation.composer` takeover such as ui-question's) hides the whole dock, this strip included.
+The todo surfaces are two registrations over that shape, both plain registrant plugins with `inject: ['slots', 'conversation']`. `TodoRow` takes the `'conversation.chat.toolview'` key `todo_write` and summarizes what the call attempted (`<done>/<total> 已完成 · <active item>` parsed from its args, falling back to the generic summary on malformed or wrongly-shaped model JSON, and keeping the generic dot for non-ok execution states so a cancelled call never reads as a completed update). `TodoDock` takes the `'conversation.input.dock'` list slot at `order: -1` — above the queue rows — and is the plan strip: it reads the host-computed `todos` projection via `useProjection` (standing plan: latest `todo/write` with no later `turn/start`) and renders `TodoPanel`, which takes the plain list, hides itself while the list is empty, and starts collapsed as a header of title plus `"<done>/<total> tasks · <n> in progress"` (status glyphs are the figma check / progress / dashed-pending set). The dock adapter owns the selection so the panel stays a pure function of its props; the standing list lives here rather than in the row so the row stays one line. Anything the input-zone composer chain hides (a `conversation.composer` takeover such as ui-question's) hides the whole dock, this strip included.
 
 `QueueDock` is the terminal input-dock entry at `order: 20`. It hides while empty, renders one pending row directly, and defaults two or more rows to a collapsed `"<n> 条排队消息"` header whose button expands or collapses the complete list. The header exposes `aria-expanded` and `aria-controls`; the expanded list scrolls within a 180px height bound. An active edit or mutation keeps its rows visible, and emptying the queue restores the collapsed default for the next queue. Each visible row remains a single-line preview with its exact-occurrence edit and delete actions.
 
@@ -40,7 +40,7 @@ None; this package neither assembles nor sends a provider request.
 
 - **Stats-line durations cover the in-window flow only** — LLM and tool wall times fold the snapshot's assistant `timing` and tool call/result pairs, so nodes outside the loaded event window (older history) are not counted.
 - **Details panel is the minimal form and currently has no entry point** — selected call args/result raw display; the Input/Output/Metadata switch, Prev/Next stepping, and See-in-trajectory deep link are deferred. Tool rows stopped being details-panel click targets and nothing replaced that gesture, so `ChatViewInjected.openDetails` is implemented but uncalled and the panel (including its terminal card) is unreachable in the assembled application; its rendering stays covered by mounting it with a selection directly.
-- **Assistant per-message paging is a reserved slot** — drawn in the design, not implemented. The finalized content IconActions row (copy / branch / clock) ships under text output only; branch forks through the turn containing that message, increments the inherited title on the client, and then opens the child, while a fork or rename failure leaves the source selected.
+- **Assistant per-message paging is a reserved slot** — drawn in the design, not implemented. The finalized content IconActions row (copy / branch / clock) ships under the last content-text assistant of each turn only; mid-turn narration and Think-only nodes stay chrome-free. Branch forks through the turn containing that message, increments the inherited title on the client, and then opens the child, while a fork or rename failure leaves the source selected.
 - **The sparkle icon for the others tool row is a hand-drawn approximation** — the design glyph's vector geometry is not exportable locally; promotion into ui-primitives waits on an exact export.
 - **The approval panel's "Always allow this type" is deferred** — durable grants need a grant-storage design; only allow-once/reject answer today.
 - **TodoPanel truncates long item text to one ellipsized line** — the figma strip has no wrap or expand affordance; full text is not readable inline.
diff --git a/packages/client/ui-conversation/README.zh.md b/packages/client/ui-conversation/README.zh.md
index 8f9fe7278d..e09bdcc4be 100644
--- a/packages/client/ui-conversation/README.zh.md
+++ b/packages/client/ui-conversation/README.zh.md
@@ -18,7 +18,7 @@
 
 审批经由本包声明的链接管编辑器：`ApprovalPanel` 注册为按选择器路由的 `'conversation.composer'` 配置项（ui-question 模式），在审批等待未决期间取代 InputBar 占据编辑器（琥珀色条、理由标题、来自运行中调用参数的配对命令行、一次性的拒绝／允许）。`contract/slots.ts` 中的 `PendingApproval` 领域面在运行时 `PendingWait` 载体之上拥有 wire 编码——带审计关联的 `ApprovalResponsePayload` 值；广播的 `approval/resolved` 帧使等待落定并恢复编辑器。侧边栏通过 manager 跟踪的 `waitingApproval` 列表位（未实例化会话同样点亮）镜像该阻塞状态，其优先级高于运行中圆环，直至问题解决。未决等待完全离开消息流：问题（ui-question）与审批（ApprovalPanel）都经编辑器接管作答，不再保留只读占位卡。编辑器底行的 Access 席位挂载 `PermissionSelect`，由 host 计算的 `permissions` 投影经标准工具包 `useProjection` 供数（key 缺席即隐藏 chip）；chip 打开 Menu 原语下拉，kebab-case 预设名渲染为 Title Case 标签（与 `/permission` popup 的显示变换孪生），选中会经由输入栏注入的 `command` 回调提交 `/permission <preset>` 命令行。
 
-todo 两个面就是在该形状上的两个注册项，都是普通注册方插件，`inject: ['slots', 'conversation']`。`TodoRow` 占用 `'conversation.chat.toolview'` 的 `todo_write` key，摘要该次调用「试图写入」的内容（从其 args 解析出 `<已完成>/<总数> 已完成 · <进行中条目>`；模型 JSON 残缺或形状不对时回落到通用摘要；非 ok 执行状态保留通用状态点，使被取消的调用绝不读成一次已完成的更新）。`TodoDock` 以 `order: 10` 占用 `'conversation.input.dock'` 列表 slot（位于 Goal 和 Queue 之间），是计划条：它经 `useProjection` 读取 host 计算的 `todos` 投影（站立计划：其后没有更晚 `turn/start` 的最近一次 `todo/write`）并渲染 `TodoPanel`，后者接收纯列表，在列表为空时自我隐藏；列表非空时面板初始折叠，表头显示标题加 `"<已完成>/<总数> tasks · <n> in progress"`（状态图标为 figma 的勾选／进行中／虚线未开始一组）。选取由 dock 适配器负责，因此面板保持为其 props 的纯函数；站立列表放在此处而非行内，行才能保持单行。输入区 composer 链隐藏的一切（例如 ui-question 对 `conversation.composer` 的接管）也会隐藏整个 dock，包括这条计划条。
+todo 两个面就是在该形状上的两个注册项，都是普通注册方插件，`inject: ['slots', 'conversation']`。`TodoRow` 占用 `'conversation.chat.toolview'` 的 `todo_write` key，摘要该次调用「试图写入」的内容（从其 args 解析出 `<已完成>/<总数> 已完成 · <进行中条目>`；模型 JSON 残缺或形状不对时回落到通用摘要；非 ok 执行状态保留通用状态点，使被取消的调用绝不读成一次已完成的更新）。`TodoDock` 以 `order: -1` 占用 `'conversation.input.dock'` 列表 slot（位于队列行之上），是计划条：它经 `useProjection` 读取 host 计算的 `todos` 投影（站立计划：其后没有更晚 `turn/start` 的最近一次 `todo/write`）并渲染 `TodoPanel`，后者接收纯列表，在列表为空时自我隐藏；列表非空时面板初始折叠，表头显示标题加 `"<已完成>/<总数> tasks · <n> in progress"`（状态图标为 figma 的勾选／进行中／虚线未开始一组）。选取由 dock 适配器负责，因此面板保持为其 props 的纯函数；站立列表放在此处而非行内，行才能保持单行。输入区 composer 链隐藏的一切（例如 ui-question 对 `conversation.composer` 的接管）也会隐藏整个 dock，包括这条计划条。
 
 `QueueDock` 是 `order: 20` 的末端 input-dock 条目。队列为空时隐藏；只有一个待处理项时直接渲染该行；存在两个或更多待处理项时，默认收起为 `"<n> 条排队消息"` 表头，其按钮可展开或收起完整列表。表头暴露 `aria-expanded` 和 `aria-controls`；展开后的列表以 180px 为高度上限，并可滚动。存在进行中的编辑或变更时，列表行会保持可见；队列清空后，下一次出现队列时会恢复默认收起状态。每条可见行仍是单行预览，并提供针对精确单次入队项的编辑和删除操作。
 
@@ -40,7 +40,7 @@ todo 两个面就是在该形状上的两个注册项，都是普通注册方插
 
 - **统计行的耗时只覆盖窗口内消息流**：LLM（大语言模型）与工具墙钟时间由快照的 assistant `timing` 与工具 call/result 配对折算，落在已加载事件窗口之外的节点（更早的历史）不计入。
 - **详情面板是最小形态，且当前没有入口**：以原始形式显示已选择调用的参数／结果；Input/Output/Metadata 切换、Prev/Next 步进与 See-in-trajectory 深链接暂缓实现。工具行已不再是详情面板的点击目标，且没有任何手势接替它，因此 `ChatViewInjected.openDetails` 虽已实现却无人调用，该面板（含其终端卡片）在组装后的应用中不可达；其渲染仍由直接以选中态挂载它来覆盖。
-- **assistant 逐消息分页是预留 slot**：设计中已有图稿，尚未实现。已定稿的内容 IconActions 行（复制／分支／时钟）只挂在 text 输出下；分支会 fork 到包含该消息的轮次末尾，在 client 端递增继承标题后打开子会话，而 fork 或改名失败时源会话保持选中。
+- **assistant 逐消息分页是预留 slot**：设计中已有图稿，尚未实现。已定稿的内容 IconActions 行（复制／分支／时钟）只挂在每个轮次中最后一条带 text 内容的 assistant 下；轮次中间的叙述与纯 Think 节点不带 chrome。分支会 fork 到包含该消息的轮次末尾，在 client 端递增继承标题后打开子会话，而 fork 或改名失败时源会话保持选中。
 - **others 工具行的闪光图标是手绘近似版本**：无法在本地导出设计字形的矢量几何；等到存在精确导出后再将其提升到 ui-primitives。
 - **审批面板的「始终允许此类」暂缓**：持久授权需要授权存储设计；今天只能回答允许一次／拒绝。
 - **TodoPanel 将过长条目截成单行省略号**：figma 条没有换行或展开入口，完整文本无法在行内读完。
diff --git a/packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx b/packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx
index 8149dad170..f912aafa97 100644
--- a/packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx
+++ b/packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx
@@ -4,8 +4,9 @@
 // view groups them into tool rows through its keyed toolview slot (figma
 // step-summary flow). Shared by finalized nodes and the streaming partial;
 // the turn-level loading dots live in the chat view's tail, not here.
-// Finalized content (text) nodes append IconActions once streaming ends;
-// Think / tool-head-only nodes stay chrome-free.
+// Finalized turn-tail content (text) nodes append IconActions once streaming
+// ends (`time` is omitted for mid-turn narration); Think / tool-head-only
+// nodes stay chrome-free.
 
 import { memo } from 'react'
 import type { AssistantBlock } from '@deepseek-ai/dsh-client-runtime/client'
@@ -21,7 +22,8 @@ export interface AssistantMarkdownProps {
   streaming: boolean
   /** Frozen partial of an aborted turn: rendered with a 已停止 marker. */
   interrupted?: boolean | undefined
-  /** Unix epoch ms for the finalized IconActions clock; omitted while streaming. */
+  /** Unix epoch ms for the IconActions clock; omitted while streaming or when
+   *  the parent withholds chrome (mid-turn content assistants). */
   time?: number | undefined
   /** Event sequence used as the fork boundary; omitted while streaming. */
   seq?: number | undefined
diff --git a/packages/client/ui-conversation/src/client/chat/ChatView.tsx b/packages/client/ui-conversation/src/client/chat/ChatView.tsx
index 503ac11404..9180911ca5 100644
--- a/packages/client/ui-conversation/src/client/chat/ChatView.tsx
+++ b/packages/client/ui-conversation/src/client/chat/ChatView.tsx
@@ -30,7 +30,7 @@ import type {
 import type { SnapshotSelectorHook } from '@deepseek-ai/dsh-client-ui-slots'
 import { IconChevronDownOutline14 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { ChatViewSlotProps } from '../contract/slots.ts'
-import { deriveChatFlow, type ChatFlowItem } from './chat-flow.ts'
+import { assistantActionsSeqs, deriveChatFlow, type ChatFlowItem } from './chat-flow.ts'
 import { AssistantMarkdown } from './AssistantMarkdown.tsx'
 import { GenericCommandCard } from './GenericCommandCard.tsx'
 import { GenericToolCard } from './GenericToolCard.tsx'
@@ -255,6 +255,9 @@ export function ChatView({
   const selectedCallId = useStore(s => s.selection?.callId)
 
   const items = useMemo(() => deriveChatFlow(nodes), [nodes])
+  // Only the last content assistant of each turn owns IconActions; mid-turn
+  // text (before tools) omits `time` so AssistantMarkdown stays chrome-free.
+  const actionSeqs = useMemo(() => assistantActionsSeqs(nodes), [nodes])
 
   const listRef = useRef<HTMLDivElement | null>(null)
   const atBottomRef = useRef(true)
@@ -401,7 +404,7 @@ export function ChatView({
           blocks={node.blocks}
           streaming={false}
           interrupted={node.interrupted}
-          time={node.time}
+          time={actionSeqs.has(node.seq) ? node.time : undefined}
           seq={node.seq}
           onFork={forkAt}
         />
diff --git a/packages/client/ui-conversation/src/client/chat/GenericCommandCard.tsx b/packages/client/ui-conversation/src/client/chat/GenericCommandCard.tsx
index 3c83483fd3..b7c086f953 100644
--- a/packages/client/ui-conversation/src/client/chat/GenericCommandCard.tsx
+++ b/packages/client/ui-conversation/src/client/chat/GenericCommandCard.tsx
@@ -1,6 +1,6 @@
 // GenericCommandCard: the default command row — a stripped-down
-// GenericToolCard rendering the dispatched command line and the settlement
-// text. Supplied by the chat view as the keyed commandview slot's render-site
+// GenericToolCard rendering the command name and its settlement text.
+// Supplied by the chat view as the keyed commandview slot's render-site
 // fallback (an unregistered command name lands here); registrants may compose
 // it as a base, feeding the same owner payload through.
 
@@ -20,10 +20,11 @@ export function GenericCommandCard({ node }: CommandRowOwnerProps) {
   const summary = node.outcome === null
     ? '执行中…'
     : text ?? (node.outcome.kind === 'error' ? '命令失败' : '已完成')
-  // Display line rebuilt from the structured payload (args carries its own
-  // separator whitespace verbatim); a cross-window node whose run page fell
-  // out of the window has neither.
-  const title = node.name === null ? '命令' : `/${node.name}${node.args ?? ''}`
+  // Title is the bare command name: the row already reads `name · outcome`,
+  // and the dispatched line's own `/` and arguments only restate what the
+  // settlement text says (`permission · preset workspace-write`). A
+  // cross-window node whose run page fell out of the window has no name.
+  const title = node.name ?? '命令'
   return (
     <ToolRow
       variant="others"
diff --git a/packages/client/ui-conversation/src/client/chat/chat-flow.ts b/packages/client/ui-conversation/src/client/chat/chat-flow.ts
index f1ce061af8..ad98d3aaad 100644
--- a/packages/client/ui-conversation/src/client/chat/chat-flow.ts
+++ b/packages/client/ui-conversation/src/client/chat/chat-flow.ts
@@ -3,15 +3,24 @@
  * results group into consecutive-run tool groups (figma step-summary flow,
  * VERTICAL gap10) alternating with narration; everything else passes through.
  * Item identity keys are stable across snapshots so the list parent can
- * subscribe to keys only while rows subscribe to content.
+ * subscribe to keys only while rows subscribe to content. IconActions ownership
+ * (last content assistant per turn) is derived here too so ChatView and the
+ * flow share one gate.
  */
-import type { ConversationNode, ToolResultNode } from '@deepseek-ai/dsh-client-runtime/client'
+import type {
+  AssistantBlock, ConversationNode, ToolResultNode,
+} from '@deepseek-ai/dsh-client-runtime/client'
 
 /** One renderable flow item; key is the React key and the parent's identity unit. */
 export type ChatFlowItem =
   | { kind: 'node'; key: string; node: ConversationNode }
   | { kind: 'tool-group'; key: string; results: readonly ToolResultNode[] }
 
+/** True when the node has model-visible text content worth IconActions chrome. */
+function hasContentText(blocks: readonly AssistantBlock[]): boolean {
+  return blocks.some(block => block.kind === 'text' && block.text.trim() !== '')
+}
+
 /** An assistant node that renders nothing: only tool-call heads (rows render
  *  via the grouping pass) and blank text/reasoning. Skipped by the flow so it
  *  neither costs column gaps nor splits a tool-row run. Interrupted nodes
@@ -22,6 +31,21 @@ function rendersNothing(node: ConversationNode): boolean {
       || ((b.kind === 'text' || b.kind === 'reasoning') && b.text.trim() === ''))
 }
 
+/**
+ * Seq set of assistants that own IconActions: the last content-text assistant
+ * in each turn. Mid-turn narration (text before tools) stays chrome-free.
+ * @param nodes - snapshot nodes (surface order).
+ * @returns Seq values ChatView may pass as `time` into AssistantMarkdown.
+ */
+export function assistantActionsSeqs(nodes: readonly ConversationNode[]): ReadonlySet<number> {
+  const lastByTurn = new Map<number, number>()
+  for (const node of nodes) {
+    if (node.kind !== 'assistant' || !hasContentText(node.blocks)) continue
+    lastByTurn.set(node.turn, node.seq)
+  }
+  return new Set(lastByTurn.values())
+}
+
 /**
  * Group finalized nodes into the step-summary flow.
  * @param nodes - snapshot nodes (surface order).
diff --git a/packages/client/ui-conversation/tests/chat-view.spec.tsx b/packages/client/ui-conversation/tests/chat-view.spec.tsx
index 9bb0fabdc3..7a0a171b4b 100644
--- a/packages/client/ui-conversation/tests/chat-view.spec.tsx
+++ b/packages/client/ui-conversation/tests/chat-view.spec.tsx
@@ -16,7 +16,7 @@ import { RpcId } from '@deepseek-ai/dsh-client-connection/client'
 import type { ChatViewSlotProps, SelectionTarget } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import { createChatStore } from '../src/client/stores.ts'
 import { ChatView } from '../src/client/chat/ChatView.tsx'
-import { deriveChatFlow, flowKeys } from '../src/client/chat/chat-flow.ts'
+import { assistantActionsSeqs, deriveChatFlow, flowKeys } from '../src/client/chat/chat-flow.ts'
 
 afterEach(cleanup)
 // Keyless create() persists under the bare declared key; clear between cases
@@ -61,8 +61,8 @@ const user = (seq: number, text: string): UserMessageNode => ({
   content: [{ type: 'text', text }] as never,
   source: null,
 })
-const assistant = (seq: number, text: string): AssistantMessageNode => ({
-  kind: 'assistant', seq, time: seq * 1_000, turn: 1, step: 1, blocks: [{ kind: 'text', text }],
+const assistant = (seq: number, text: string, turn = 1): AssistantMessageNode => ({
+  kind: 'assistant', seq, time: seq * 1_000, turn, step: 1, blocks: [{ kind: 'text', text }],
 })
 const toolResult = (seq: number, callId: string, name = 'bash'): ToolResultNode => ({
   kind: 'tool-result', seq, time: seq * 1_000, callId,
@@ -165,6 +165,23 @@ describe('chat-flow derivation', () => {
     expect(flowKeys(deriveChatFlow([toolResult(3, 'a'), { ...headsOnly, interrupted: true }, toolResult(5, 'b')]))).toBe('g3|n4|g5')
     expect(flowKeys(deriveChatFlow([toolResult(3, 'a'), assistant(4, 'found'), toolResult(5, 'b')]))).toBe('g3|n4|g5')
   })
+
+  it('assistantActionsSeqs keeps only the last content assistant per turn', () => {
+    const thinkOnly: AssistantMessageNode = {
+      kind: 'assistant', seq: 3, time: 3_000, turn: 1, step: 2,
+      blocks: [{ kind: 'reasoning', text: 'planning' }],
+    }
+    const seqs = assistantActionsSeqs([
+      user(1, 'hi'),
+      assistant(2, 'looking', 1),
+      thinkOnly,
+      toolResult(4, 'a'),
+      assistant(5, 'done', 1),
+      user(6, 'again'),
+      assistant(7, 'second turn', 2),
+    ])
+    expect([...seqs].sort((a, b) => a - b)).toEqual([5, 7])
+  })
 })
 
 describe('ChatView', () => {
@@ -215,6 +232,23 @@ describe('ChatView', () => {
     expect(h.inspectCall).toHaveBeenCalledWith('a')
   })
 
+  it('shows assistant IconActions only on the last content message of each turn', () => {
+    const h = makeHarness({
+      nodes: [
+        user(1, 'hi'),
+        assistant(2, 'mid-turn text'),
+        toolResult(3, 'a'),
+        assistant(4, 'final answer'),
+        user(5, 'next'),
+        assistant(6, 'second turn', 2),
+      ],
+    })
+    const view = render(<h.ChatView {...h.props} />)
+    // 2 user + 2 turn-tail assistants; mid-turn text at seq 2 stays chrome-free.
+    expect(view.getAllByRole('button', { name: '复制' })).toHaveLength(4)
+    expect(view.getAllByRole('button', { name: '在新对话中分支' })).toHaveLength(4)
+  })
+
   it('forks from both user and finalized assistant message actions at their event seq', () => {
     const h = makeHarness({ nodes: [user(1, 'question'), assistant(2, 'answer')] })
     const view = render(<h.ChatView {...h.props} />)
@@ -528,10 +562,14 @@ describe('ChatView', () => {
       name: 'plan', args: '', outcome: { kind: 'success', text: '已进入 plan mode' },
       ...over,
     })
-    // Settled success: the command line is the title, the outcome text the summary.
-    const settled = makeHarness({ nodes: [user(1, 'hi'), command({})] })
+    // Settled success: the bare command name is the title, the outcome text
+    // the summary — neither the dispatched `/` nor its arguments reach the row
+    // (the settlement text already says what the command did).
+    const settled = makeHarness({ nodes: [user(1, 'hi'), command({ args: ' now' })] })
     const view = render(<settled.ChatView {...settled.props} />)
-    expect(view.getByText('/plan')).toBeTruthy()
+    expect(view.getByText('plan')).toBeTruthy()
+    expect(view.queryByText('/plan')).toBeNull()
+    expect(view.queryByText('/plan now')).toBeNull()
     expect(view.getByText('已进入 plan mode')).toBeTruthy()
 
     // Error outcome flips the row state; a text-less error gets the default copy.
diff --git a/packages/client/ui-layout/README.i18n.yaml b/packages/client/ui-layout/README.i18n.yaml
index 870937c93c..aba4711a24 100644
--- a/packages/client/ui-layout/README.i18n.yaml
+++ b/packages/client/ui-layout/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-layout/README.md
-README.md: 0e92958c9b088071ab58f7e87e8af68f6c2df68d
-README.zh.md: 0fb3b1cd85bbf6e070a2a1dd01b25981e5990df0
+README.md: cb99023e6a9e3364c6f48190cf4a0cd71da2cbba
+README.zh.md: 3681b4517670eb92d8f32be2ac62d5852ac745a3
diff --git a/packages/client/ui-layout/README.md b/packages/client/ui-layout/README.md
index 0e92958c9b..cb99023e6a 100644
--- a/packages/client/ui-layout/README.md
+++ b/packages/client/ui-layout/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Shell plugin: three-column AppFrame (drag handles and concession chain) plus the `ctx.layout` panel-geometry service; it registers into the runtime-owned `root` slot and declares `sidebar`, `conversation`, `details`, and `conversation.empty`. The sidebar is fixed-width (only details shrinks, then auto-closes); a closed sidebar retains a 56px control rail while details closes to zero width. The package also seats the theme presenter: it consumes resolved `ctx.theme` snapshots and projects them onto the document (`html { color-scheme }` for native UA chrome, `body[data-ds-dark-theme]` from the active color scheme, plus the theme's alias tokens as inline variables on body).
+Shell plugin: three-column AppFrame (drag handles and concession chain) plus the `ctx.layout` panel-geometry service; it registers into the runtime-owned `root` slot and declares `sidebar`, `conversation`, `details`, and `conversation.empty`. The sidebar resize boundary is an invisible hit strip, while the details boundary retains its floating pill; only details shrinks during concession and then auto-closes. A closed sidebar retains a 56px control rail while details closes to zero width. The package also seats the theme presenter: it consumes resolved `ctx.theme` snapshots and projects them onto the document (`html { color-scheme }` for native UA chrome, `body[data-ds-dark-theme]` from the active color scheme, plus the theme's alias tokens as inline variables on body).
 
 AppFrame always mounts the conversation and details columns; a connected Session renders through `SessionProvider`. The transient layout store starts the sidebar at its default width and details closed, and it never reads or writes `localStorage`. Hero and other unselected states also derive a zero rendered details width without changing that stored preference. AppFrame retains the last non-blank Session id across those states: the first Session remains closed, an explicit details action opens the contract default width, returning to the same Session restores its unchanged width, and selecting a different Session closes details before paint. The conversation owner share is empty, while the sidebar owner share contains only `collapsed` and `width`; registrants obtain business data from standard hooks and actions from their own inject faces.
 
diff --git a/packages/client/ui-layout/README.zh.md b/packages/client/ui-layout/README.zh.md
index 0fb3b1cd85..3681b45176 100644
--- a/packages/client/ui-layout/README.zh.md
+++ b/packages/client/ui-layout/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-外壳插件：三栏 AppFrame（拖动手柄与让步链）加 `ctx.layout` 面板几何服务；它注册到运行时拥有的 `root` slot，并声明 `sidebar`、`conversation`、`details` 和 `conversation.empty`。侧边栏宽度固定（只会收缩详情栏，然后将其自动关闭）；关闭的侧边栏仍保留 56px 控制轨道，详情栏则关闭到零宽度。该包还提供主题呈现器：它消费解析后的 `ctx.theme` 快照，并将其投影到 document（用 `html { color-scheme }` 驱动原生 UA 控件，依据当前配色方案设置 `body[data-ds-dark-theme]`，并将主题的别名 token 设为 body 上的内联变量）。
+外壳插件：三栏 AppFrame（拖动手柄与让步链）加 `ctx.layout` 面板几何服务；它注册到运行时拥有的 `root` slot，并声明 `sidebar`、`conversation`、`details` 和 `conversation.empty`。侧边栏的缩放边界是不可见命中条带，详情栏边界则保留其浮动胶囊；让步期间只有详情栏会收缩并随后自动关闭。关闭的侧边栏仍保留 56px 控制轨道，详情栏则关闭到零宽度。该包还提供主题呈现器：它消费解析后的 `ctx.theme` 快照，并将其投影到 document（用 `html { color-scheme }` 驱动原生 UA 控件，依据当前配色方案设置 `body[data-ds-dark-theme]`，并将主题的别名 token 设为 body 上的内联变量）。
 
 AppFrame 始终挂载会话栏和详情栏；已连接 Session 通过 `SessionProvider` 渲染。布局 store 是瞬时状态，侧边栏以默认宽度启动，详情栏则保持关闭，且该 store 从不读写 `localStorage`。hero 和其他未选中状态也会将详情栏的渲染宽度派生为零，但不会改变存储的首选宽度。AppFrame 会跨越这些状态保留最后一个非 blank 会话 id：首个会话保持关闭；显式打开详情栏的操作会使用契约默认宽度；返回同一会话时恢复其未改变的宽度；选择不同会话时，详情栏会在绘制前关闭。会话 owner share 为空，侧边栏 owner share 只包含 `collapsed` 和 `width`；注册方通过标准钩子获取业务数据，并从各自的 inject 表层获取操作。
 
diff --git a/packages/client/ui-layout/src/client/AppFrame.module.css b/packages/client/ui-layout/src/client/AppFrame.module.css
index b805bb178a..ef6c70661d 100644
--- a/packages/client/ui-layout/src/client/AppFrame.module.css
+++ b/packages/client/ui-layout/src/client/AppFrame.module.css
@@ -49,9 +49,8 @@
 }
 
 /* Drag handles are frame children (columns clip overflow): an 8px hit strip
-   centered on the column border via inline left, above column content. The
-   visible pill (12x32 r10, riding the border at vertical center) is the figma
-   Handle component; the hit strip stays wider than the pill. */
+   centered on the column border via inline left, above column content. Details
+   adds a visible 12x32 pill at vertical center; sidebar keeps only the hit strip. */
 .handle {
   position: absolute;
   top: 0;
@@ -76,7 +75,7 @@
   }
 }
 
-.handle::after {
+.handle[data-side='details']::after {
   content: '';
   position: absolute;
   top: 50%;
@@ -88,23 +87,22 @@
   box-sizing: border-box;
   background: var(--dsw-alias-button-floating-fill);
   border: 1px solid var(--dsw-alias-border-l2-darkmode-thin);
-  /* Hover affordance: the pill hides until the pointer is over the owning
-     column (data-side pairs handle and column), the strip itself, or a drag. */
+  /* Hover affordance: the details pill hides until the pointer is over its
+     column, the strip itself, or a drag. */
   opacity: 0;
   transition:
     opacity var(--ds-transition-duration-slow) var(--ds-ease-in-out),
     background var(--ds-transition-duration-slow) var(--ds-ease-in-out);
 }
 
-.sidebarCol:hover ~ .handle[data-side='sidebar']::after,
 .detailsCol:hover ~ .handle[data-side='details']::after,
-.handle:hover::after,
-.handle[data-dragging='true']::after {
+.handle[data-side='details']:hover::after,
+.handle[data-side='details'][data-dragging='true']::after {
   opacity: 1;
 }
 
-.handle:hover::after,
-.handle[data-dragging='true']::after {
+.handle[data-side='details']:hover::after,
+.handle[data-side='details'][data-dragging='true']::after {
   background: var(--dsw-alias-button-floating-hover);
   border-color: var(--dsw-alias-border-l3);
 }
diff --git a/packages/client/ui-model/src/client/service.ts b/packages/client/ui-model/src/client/service.ts
index cabeaf52e6..cbe8c75a57 100644
--- a/packages/client/ui-model/src/client/service.ts
+++ b/packages/client/ui-model/src/client/service.ts
@@ -44,6 +44,14 @@ export class ModelService extends Service {
     ctx.on('connection/reset', () => {
       for (const directory of this.live.directories.values()) directory.resetConnected()
     })
+    // Provider topology changed on the host (a settings-born route appeared
+    // or dropped): refresh every open directory in the background so pickers
+    // show the new catalog without a reopen. Failures stay on each store.
+    ctx.on('models/changed', () => {
+      for (const directory of this.live.directories.values()) {
+        directory.load().catch(() => undefined)
+      }
+    })
   }
 
   /**
diff --git a/packages/client/ui-model/tests/browser-plugin.spec.ts b/packages/client/ui-model/tests/browser-plugin.spec.ts
index 3f2500077e..b1c3defb9d 100644
--- a/packages/client/ui-model/tests/browser-plugin.spec.ts
+++ b/packages/client/ui-model/tests/browser-plugin.spec.ts
@@ -21,7 +21,7 @@ import { apply, inject } from '../src/client/index.ts'
 const sid = (k: string): SessionId => k as SessionId
 
 const GROUPS = [{
-  id: 'deepseek',
+  id: 'deepseek-official',
   name: 'DeepSeek',
   models: [
     {
@@ -54,7 +54,7 @@ const GROUPS = [{
 /** Boot the plugin over fake faces + a stateful fake host (current moves on selectModel). */
 async function bench() {
   const ctx = new Context()
-  let current: ModelTarget = { provider: 'deepseek', model: 'deepseek-v4-flash' }
+  let current: ModelTarget = { provider: 'deepseek-official', model: 'deepseek-v4-flash' }
   const calls = { models: 0, select: 0 }
   ctx.provide('connection', { api: { sessions: {
     models: () => {
@@ -138,17 +138,17 @@ describe('ui-model dual entry', () => {
     const seatFace = b.seat().inject!(sid('s1'))
     // Switch through the SEAT entry.
     expect(await seatFace.select({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-pro',
       reasoningEffort: 'max',
     })).toBe(true)
     expect(b.hostCurrent()).toEqual({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-pro',
       reasoningEffort: 'max',
     })
     expect(seatFace.directory.getSnapshot().current).toEqual({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-pro',
       reasoningEffort: 'max',
     })
@@ -165,7 +165,7 @@ describe('ui-model dual entry', () => {
     const pro = options.find((o: SelectOption) => o.label === 'DeepSeek-V4-Pro')!
     await b.contribution().ui.onSelect(pro, projection('s1'))
     expect(seatFace.directory.getSnapshot().current).toEqual({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-pro',
       reasoningEffort: 'high',
     })
@@ -188,14 +188,14 @@ describe('ui-model dual entry', () => {
     const b = await bench()
     b.mint('s1')
     const face = b.seat().inject!(sid('s1'))
-    await face.select({ provider: 'deepseek', model: 'deepseek-v4-pro' })
-    b.setHostCurrent({ provider: 'deepseek', model: 'deepseek-v4-flash' })
+    await face.select({ provider: 'deepseek-official', model: 'deepseek-v4-pro' })
+    b.setHostCurrent({ provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     b.ctx.emit('connection/reset')
     expect(face.directory.getSnapshot()).toMatchObject({ current: null, status: 'loading' })
     await Promise.resolve()
     expect(face.directory.getSnapshot()).toMatchObject({
-      current: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      current: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
       status: 'ready',
     })
   })
diff --git a/packages/client/ui-model/tests/model-select.spec.tsx b/packages/client/ui-model/tests/model-select.spec.tsx
index faee9e3aad..d1dc4f7d1b 100644
--- a/packages/client/ui-model/tests/model-select.spec.tsx
+++ b/packages/client/ui-model/tests/model-select.spec.tsx
@@ -31,9 +31,9 @@ const reasoning = {
 
 function state(overrides: Partial<ModelDirectoryState> = {}): ModelDirectoryState {
   return {
-    current: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    current: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     groups: [{
-      id: 'deepseek',
+      id: 'deepseek-official',
       name: 'DeepSeek',
       models: [{ id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash', reasoning }],
     }],
@@ -72,7 +72,7 @@ describe('ModelSelect reasoning effort', () => {
     fireEvent.click(screen.getByRole('menuitemradio', { name: /Max/ }))
     await waitFor(() => {
       expect(select).toHaveBeenCalledWith({
-        provider: 'deepseek',
+        provider: 'deepseek-official',
         model: 'deepseek-v4-flash',
         reasoningEffort: 'max',
       })
diff --git a/packages/client/ui-models/README.i18n.yaml b/packages/client/ui-models/README.i18n.yaml
index fd750959f4..951b1d04fe 100644
--- a/packages/client/ui-models/README.i18n.yaml
+++ b/packages/client/ui-models/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-models/README.md
-README.md: 13f51d5338affd65d0705cec6a3b4ef78a534f0f
-README.zh.md: 90f4eb5959e105178844c7bd5b07596aff81e706
+README.md: adfbc084e1b0e227d50032cb6c924401b81c6a79
+README.zh.md: 4ee7d4efa729fdccee392ab8e55078b5a4a239ef
diff --git a/packages/client/ui-models/README.md b/packages/client/ui-models/README.md
index 13f51d5338..adfbc084e1 100644
--- a/packages/client/ui-models/README.md
+++ b/packages/client/ui-models/README.md
@@ -2,11 +2,17 @@
 
 English | [中文](README.zh.md)
 
-Models settings section plugin: registers the `models` nav entry into `settings.section` with an intentionally empty content column — model management lands in a later phase.
+Models settings plugin: the provider configuration page and official-DeepSeek first-run routing overlay. It joins three wire domains into one shared snapshot — `llm.providers` (the configurable-provider directory with each route's live/dormant state), `settings.describe` (serialized schemas, layered redacted values, secret slots), and `credentials.describe` (value-free configured/source/writable badges) — and renders provider rows with one editor card at a time.
+
+Rows are the *configured* providers (their profile resolves in the owning namespace); a whole-section provider whose key is not configured anywhere (the first-run DeepSeek posture) renders as its open setup card instead of a row, and the add flow is a card carrying the dormant-directory provider select — a bare-mounted `llm-pi-ai` offers its whole installed catalog before any route exists. The editor is a hand-written card per adapter family: the primary field is a single **API key** input — the page never asks for an environment-variable name; a typed key stores **write-only** through `credentials.set` under the profile's reference, deriving `<ROUTE>_API_KEY` when the profile has none, and the pi-ai profile records that derivation as `apiKeyEnv`, so `settings.yaml` never carries a key value. The collapsed 自定义设置 fold carries the curated extras — `baseURL` for both families (the deepseek placeholder shows the public endpoint), plus `reasoningEffort` (deepseek) or `reasoning` (pi-ai); every other profile field stays owned by `settings.yaml`. A row is deletable only when the user layer alone carries it (removal restores the composition base).
+
+The first-run overlay projects `deepseek-official` readiness from that same joined snapshot. It recognizes the official adapter through its `llm-deepseek` configurable-provider declaration, so an undeclared live route with the same provider id is not treated as repairable configuration. A configured literal `apiKey` secret sidecar or configured credential reference suppresses the prompt, including a read-only launch-environment credential. Only a mounted adapter with a missing writable reference shows the action that opens Settings on the Models section, whose existing setup card exclusively owns key input and `credentials.set`; the overlay never holds a secret. An absent adapter, inactive route, failed join, read-only deployment, or unusable settings or credential capability is skipped so onboarding cannot block the rest of the product; the Models page remains the diagnostic surface.
+
+Every edit lands as `settings.mutate` path ops against the stored section — a set per changed field, an unset per cleared one, and a single unset for a deleted row. The page only ever holds the REDACTED descriptor, so it names the fields it can see rather than rebuilding a section: a stored literal secret it never received is mentioned by no op and survives. Each write carries the `revision` the card opened at, so a concurrent write from another tab or an external `settings.yaml` edit is refused as `settings-conflict` and the card asks the user to reopen instead of replaying its stale snapshot. The page refetches on the pushed invalidations (`settings/changed`, `credentials/changed`, `models/changed`, and `connection/reset`) once it has loaded, so an external `settings.yaml` edit, a second tab, or a settings-born route converges without polling.
 
 ## Model Experience
 
-None, as the section renders an empty browser UI column; nothing here reaches a model request.
+None, as the section renders a browser configuration UI; nothing here reaches a model request.
 
 #### KV Cache effect
 
@@ -14,4 +20,7 @@ None; this package neither assembles nor sends a provider request.
 
 ## Known Limitations and Deferred Work
 
-- **Content column is empty by design** — provider list, editing form, and activation flow are deferred until the model-management service exists.
+- **Only the API key and the curated fold fields are editable on the card** — the hand-written editor traded schema-generic field coverage for the mockup layout ([Agent Note](../../../.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md)); advanced fields (`models`, retry policy, timeouts…) are edited in `settings.yaml`, which the fold points at. A profile schema without the conventional fields renders the hint alone, and the two curated layouts key on the `llm-deepseek`/`llm-pi-ai` namespaces by name.
+- **Deleting a row leaves its stored key in `.env`** — removal unsets the settings profile but deliberately does not unset the derived credential; re-adding the provider finds the key already configured. An explicit key-removal control is deferred.
+- **No per-provider model listing on the page** — the picker surfaces models; this page shows route state only. A models preview per row is deferred until a consumer needs it.
+- **Undeclared live routes render nowhere** — a route registered without a configurable-provider declaration has no settings address; it stays visible in pickers but not on this page's rows.
diff --git a/packages/client/ui-models/README.zh.md b/packages/client/ui-models/README.zh.md
index 90f4eb5959..4ee7d4efa7 100644
--- a/packages/client/ui-models/README.zh.md
+++ b/packages/client/ui-models/README.zh.md
@@ -2,11 +2,17 @@
 
 [English](README.md) | 中文
 
-模型设置分区插件：注册 `models` 导航项，使其进入 `settings.section`；内容栏有意留空，模型管理将在后续阶段实现。
+模型设置插件：提供方配置页和 DeepSeek 官方首次使用跳转浮层。它把三个协议领域汇聚为一个共享快照：`llm.providers`（可配置提供方目录，含每条路由的存活／休眠状态）、`settings.describe`（序列化 schema、分层脱敏值、secret 槽位）与 `credentials.describe`（不含值的 configured/source/writable 徽标）；页面据此渲染提供方行，一次只展开一张编辑卡片。
+
+行是*已配置*的提供方（其 profile 在所属 namespace 中解析得出）；密钥未在任何地方配置的整分节提供方（DeepSeek 的首次运行姿态）会渲染为其展开的设置卡片而非一行，「新增」流程则是一张承载休眠目录提供方选择框的卡片——裸挂载的 `llm-pi-ai` 在任何路由存在之前就能提供其完整的已安装 catalog。编辑器是每个适配器家族各一张的手写卡片：主字段是单独一个 **API 密钥**输入框——页面从不询问环境变量名；键入的密钥经 `credentials.set` 以**只写**方式存入 profile 的引用之下，profile 没有引用时便派生 `<ROUTE>_API_KEY`，pi-ai profile 会把这次派生记录为 `apiKeyEnv`，因此 `settings.yaml` 从不携带密钥值。收起的「自定义设置」折叠区承载精选的额外字段——两个家族都有 `baseURL`（deepseek 的占位符显示公共端点），另加 `reasoningEffort`（deepseek）或 `reasoning`（pi-ai）；其余每个 profile 字段仍归 `settings.yaml` 所有。只有当某行仅由用户层承载时它才可删除（删除会还原组合 base）。
+
+首次使用浮层从同一个联接快照得出 `deepseek-official` 的就绪状态。它通过 `llm-deepseek` 的可配置提供方声明识别官方适配器，因此不会把同一提供方 ID 下没有相应声明的存活路由视为可通过配置修复。若 `apiKey` 字面量对应的 secret 槽位标记为已设置，或凭据引用已配置，浮层就不再显示，其中包括来自启动环境且只读的凭据。只有适配器已挂载、引用可写但尚未配置时，浮层才显示一个操作按钮，用于打开「设置」的 Models 分区；密钥输入和 `credentials.set` 仅由该分区已有的设置卡片负责，浮层绝不持有 secret。适配器缺失、路由未激活、联接失败、部署只读、设置能力不可用或凭据能力不可用时均跳过，以免首次使用引导阻塞产品的其他部分；Models 页仍是诊断界面。
+
+每一次编辑都以 `settings.mutate` 的路径 op 落到已存分节上——每个变更字段一条 set、每个清空字段一条 unset、删除整行则是单独一条 unset。页面自始至终只持有**脱敏后**的 descriptor，因此它点名自己看得见的字段，而不是重建分节：一个它从未收到过的已存字面机密不会被任何 op 提及，也就得以留存。每次写入都携带该卡片打开时的 `revision`，因此来自另一个标签页或对 `settings.yaml` 的外部编辑所产生的并发写入会以 `settings-conflict` 被拒绝，卡片会请用户重新打开，而不是把自己的陈旧快照重放上去。页面加载完成后会在推送的失效事件（`settings/changed`、`credentials/changed`、`models/changed` 与 `connection/reset`）上重拉，因此外部的 `settings.yaml` 编辑、第二个标签页或 settings 新生的路由都无需轮询即可收敛。
 
 ## 模型体验
 
-无。该分区渲染空白的浏览器 UI 内容栏；这里没有任何内容进入模型请求。
+无。该分区渲染浏览器配置 UI；这里没有任何内容进入模型请求。
 
 #### KV Cache 影响
 
@@ -14,4 +20,7 @@
 
 ## 已知限制与暂缓事项
 
-- **内容栏按设计留空**：提供方列表、编辑表单和激活流程均暂缓，待模型管理服务就绪后实现。
+- **卡片上可编辑的只有 API 密钥与精选折叠区字段**：手写编辑器用 schema 通用的字段覆盖面换来了设计稿上的布局（[Agent Note（agent 决策记录）](../../../.agents/notes/implemented/architecture/2026-07-30-web-config-plane.md)）；进阶字段（`models`、重试策略、超时……）在 `settings.yaml` 中编辑，折叠区会指向它。不带这些约定字段的 profile schema 只渲染该提示，两套精选布局则以 `llm-deepseek`/`llm-pi-ai` 这两个 namespace 的名字为键。
+- **删除一行会把它已存储的密钥留在 `.env` 里**：删除取消设置的是 settings profile，却刻意不清除那条派生凭据；重新添加该提供方时会发现密钥已配置。显式的密钥移除控件暂缓。
+- **页面上没有逐提供方的模型列表**：模型由选择器呈现；本页只展示路由状态。逐行的模型预览暂缓，待有消费方需要时再实现。
+- **未声明的存活路由无处渲染**：未附带可配置提供方声明即注册的路由没有 settings 地址；它在各选择器中仍然可见，但不会出现在本页的行里。
diff --git a/packages/client/ui-models/package.json b/packages/client/ui-models/package.json
index df8cba7c8b..a649e1308f 100644
--- a/packages/client/ui-models/package.json
+++ b/packages/client/ui-models/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-models",
-  "description": "Models feature plugin: registers its Settings section (nav entry, empty content column; model management lands later)",
+  "description": "Models settings and official-DeepSeek first-run routing over one live provider/settings/credential join",
   "version": "0.0.1",
   "private": true,
   "type": "module",
@@ -36,17 +36,25 @@
   },
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-client-connection": "^0.0.1",
     "@deepseek-ai/dsh-client-runtime": "^0.0.1",
+    "@deepseek-ai/dsh-client-schema-form": "^0.0.1",
+    "@deepseek-ai/dsh-client-ui-primitives": "^0.0.1",
     "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
+    "@deepseek-ai/dsh-client-web-react": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "cordis": "^4.0.0-rc.7",
     "react": "^18.2.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-schema-form": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-client-web-react": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@types/react": "~18.3.1",
     "cordis": "^4.0.0-rc.7",
diff --git a/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.module.css b/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.module.css
new file mode 100644
index 0000000000..577b8e0287
--- /dev/null
+++ b/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.module.css
@@ -0,0 +1,7 @@
+.dialog {
+  width: min(420px, 100%);
+}
+
+.primary {
+  width: 100%;
+}
diff --git a/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.tsx b/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.tsx
new file mode 100644
index 0000000000..b4bfcf02d0
--- /dev/null
+++ b/packages/client/ui-models/src/client/DeepSeekOnboardingDialog.tsx
@@ -0,0 +1,96 @@
+/**
+ * Official-DeepSeek first-run dialog. Readiness comes from the same
+ * provider/settings/credential join as the Models page; the prompt only
+ * routes the user to that page's single credential editor.
+ */
+
+import { useEffect, useState } from 'react'
+import type { ReactNode } from 'react'
+import type { PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import { Button, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { SnapshotSelectorHook } from '@deepseek-ai/dsh-client-web-react'
+import type { ModelsSettingsState, ModelsSettingsStore } from './store.ts'
+import { deepSeekReadiness } from './store.ts'
+import type { en } from './locales.ts'
+import styles from './DeepSeekOnboardingDialog.module.css'
+
+/** Injected dependencies of {@link DeepSeekOnboardingDialog}. */
+export interface DeepSeekOnboardingInjected {
+  /** Shared Models-page join controller. */
+  controller: ModelsSettingsStore
+  /** Subscription hook bound to the shared join snapshot. */
+  useSnapshot: SnapshotSelectorHook<ModelsSettingsState>
+  /** Feature copy. */
+  t: (key: keyof typeof en) => string
+}
+
+/** Slot owner props plus the feature's injected dependencies. */
+export type DeepSeekOnboardingDialogProps =
+  PropsRuntime<'settings.onboarding'> & DeepSeekOnboardingInjected
+
+/* v8 ignore next 3 -- closed-union defaults only defend future source widening */
+function assertNever(_value: never): never {
+  throw new Error('unexpected DeepSeek onboarding state')
+}
+
+/**
+ * Prompt a first-run user to open Models while the official adapter exists
+ * and its effective credential is not configured.
+ * @param props - settings-shell owner state and Models feature dependencies.
+ * @returns the controlled modal or null when onboarding needs no intervention.
+ */
+export function DeepSeekOnboardingDialog(props: DeepSeekOnboardingDialogProps): ReactNode {
+  const { active, openSection, controller, useSnapshot, t } = props
+  const state = useSnapshot(snapshot => snapshot)
+  const readiness = deepSeekReadiness(state)
+  const [dismissed, setDismissed] = useState(false)
+
+  useEffect(() => {
+    if (active && !dismissed && state.status === 'idle') void controller.load()
+  }, [active, controller, dismissed, state.status])
+
+  const close = (): void => {
+    setDismissed(true)
+  }
+
+  const openModels = (): void => {
+    close()
+    openSection('models')
+  }
+
+  if (!active || dismissed) return null
+
+  switch (readiness.kind) {
+    case 'loading':
+    case 'adapter-absent':
+    case 'configured':
+    case 'unavailable':
+      return null
+    case 'credential-missing':
+      break
+    /* v8 ignore next -- every current readiness variant is handled above */
+    default:
+      return assertNever(readiness)
+  }
+
+  return (
+    <Modal
+      open
+      onClose={close}
+      title={t('onboardingTitle')}
+      closeLabel={t('onboardingLater')}
+      description={t('onboardingDescription')}
+      className={styles['dialog'] as string}
+      footer={(
+        <Button
+          variant="primary"
+          className={styles['primary']}
+          autoFocus
+          onClick={openModels}
+        >
+          {t('onboardingGoToSettings')}
+        </Button>
+      )}
+    />
+  )
+}
diff --git a/packages/client/ui-models/src/client/ModelsSection.module.css b/packages/client/ui-models/src/client/ModelsSection.module.css
new file mode 100644
index 0000000000..a2be484a63
--- /dev/null
+++ b/packages/client/ui-models/src/client/ModelsSection.module.css
@@ -0,0 +1,283 @@
+.section {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  max-width: 720px;
+}
+
+.title {
+  margin: 0;
+  font-size: 18px;
+  font-weight: 600;
+}
+
+.intro {
+  margin: 0;
+  font-size: 13px;
+  color: var(--text-tertiary, #888);
+}
+
+.notice {
+  margin: 0;
+  font-size: 12px;
+  color: var(--text-warning, #a15c00);
+}
+
+.rows {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.rowCard {
+  border: 1px solid var(--border, #e2e2e2);
+  border-radius: 12px;
+  padding: 12px 14px;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  background: var(--surface, #fff);
+}
+
+.rowHead {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.rowName {
+  font-size: 15px;
+  font-weight: 600;
+}
+
+.badges {
+  display: inline-flex;
+  gap: 6px;
+  flex: 1;
+}
+
+.badgeOk {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  color: var(--text-success, #0a7d33);
+  font-size: 12px;
+}
+
+.badgeOk::before {
+  content: '';
+  width: 6px;
+  height: 6px;
+  border-radius: 999px;
+  background: currentcolor;
+}
+
+.badgeMuted {
+  color: var(--text-tertiary, #999);
+  font-size: 12px;
+}
+
+.badgeWarn {
+  color: var(--text-warning, #a15c00);
+  font-size: 12px;
+}
+
+.rowActions {
+  display: inline-flex;
+  gap: 8px;
+}
+
+.primaryButton {
+  border: none;
+  border-radius: 999px;
+  padding: 8px 18px;
+  background: var(--accent-strong, #111);
+  color: var(--text-inverse, #fff);
+  font: inherit;
+  cursor: pointer;
+}
+
+.secondaryButton {
+  border: 1px solid var(--border, #d9d9d9);
+  border-radius: 999px;
+  padding: 6px 14px;
+  background: var(--surface, #fff);
+  color: inherit;
+  font: inherit;
+  cursor: pointer;
+}
+
+.dangerButton {
+  border: none;
+  background: none;
+  color: var(--text-danger, #c0392b);
+  font: inherit;
+  cursor: pointer;
+}
+
+.primaryButton:disabled,
+.secondaryButton:disabled,
+.dangerButton:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+.editor {
+  border: 1px solid var(--border, #e6e6e6);
+  border-radius: 12px;
+  background: var(--surface-secondary, #f7f7f8);
+  padding: 14px 16px;
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+}
+
+.editorHeader {
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+}
+
+.editorTitle {
+  font-size: 14px;
+  font-weight: 600;
+}
+
+.editorRoute {
+  font-size: 12px;
+  color: var(--text-tertiary, #999);
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.fieldLabel {
+  display: inline-flex;
+  align-items: center;
+  gap: 10px;
+  font-size: 12px;
+  font-weight: 500;
+  color: var(--text-secondary, #555);
+}
+
+.linkButton {
+  border: none;
+  background: none;
+  padding: 0;
+  color: var(--text-tertiary, #888);
+  font: inherit;
+  font-size: 12px;
+  text-decoration: underline;
+  cursor: pointer;
+}
+
+.linkButton:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+.advancedHint {
+  margin: 0;
+  font-size: 12px;
+  color: var(--text-tertiary, #999);
+}
+
+.editorActions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+}
+
+.addBlock {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.addButton {
+  align-self: flex-start;
+  border: 1px solid var(--border, #d9d9d9);
+  border-radius: 999px;
+  padding: 8px 16px;
+  font: inherit;
+  font-size: 13px;
+  background: var(--surface, #fff);
+  color: inherit;
+  cursor: pointer;
+}
+
+.addButton:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+.addCard,
+.setupCard {
+  border: 1px solid var(--border, #e6e6e6);
+  border-radius: 12px;
+  background: var(--surface-secondary, #f7f7f8);
+  padding: 14px 16px;
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  list-style: none;
+}
+
+.addCard .editor,
+.setupCard .editor {
+  border: none;
+  background: none;
+  padding: 0;
+}
+
+.customized {
+  border-top: 1px solid var(--border, #ececec);
+  padding-top: 10px;
+}
+
+.customizedSummary {
+  cursor: pointer;
+  font-size: 12px;
+  font-weight: 500;
+  color: var(--text-secondary, #555);
+  list-style: revert;
+}
+
+.customizedBody {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  padding-top: 12px;
+}
+
+.input {
+  box-sizing: border-box;
+  padding: 9px 12px;
+  border: 1px solid var(--border, #d9d9d9);
+  border-radius: 10px;
+  font: inherit;
+  font-size: 13px;
+  background: var(--surface, #fff);
+  color: inherit;
+}
+
+.input:focus {
+  outline: none;
+  border-color: var(--accent-strong, #111);
+}
+
+.input::placeholder {
+  color: var(--text-tertiary, #aaa);
+}
+
+.error {
+  margin: 0;
+  font-size: 12px;
+  color: var(--text-danger, #c0392b);
+}
diff --git a/packages/client/ui-models/src/client/ModelsSection.tsx b/packages/client/ui-models/src/client/ModelsSection.tsx
index ee33b916cb..d095acb86c 100644
--- a/packages/client/ui-models/src/client/ModelsSection.tsx
+++ b/packages/client/ui-models/src/client/ModelsSection.tsx
@@ -1,13 +1,281 @@
 /**
- * Models settings section: an intentionally empty content column — the nav
- * entry exists so the section slot composition is visible; model management
- * lands in a later phase.
+ * Models settings section: the provider rows joined from the configurable
+ * directory, settings namespaces, and credential states, with one editor
+ * card at a time. A whole-section provider without a configured key (the
+ * unconfigured DeepSeek posture) renders as its open setup card instead of a
+ * row; the add flow is a card carrying the dormant-provider select. Every
+ * mutation writes through the wire; the page re-renders from the pushed
+ * invalidations or the post-apply reload.
  */
 
-/**
- * Render the (empty) Models section content column.
- * @returns null — no content this phase.
- */
-export function ModelsSection() {
-  return null
+import { useState } from 'react'
+import type { ReactNode } from 'react'
+import type { IApiClient } from '@deepseek-ai/dsh-client-connection/client'
+import type { SnapshotSelectorHook } from '@deepseek-ai/dsh-client-web-react'
+import { messageOf } from './store.ts'
+import type { ModelsSettingsState, ModelsSettingsStore, ProviderRow } from './store.ts'
+import { ProviderEditor } from './ProviderEditor.tsx'
+import type { en } from './locales.ts'
+import styles from './ModelsSection.module.css'
+
+/** Injected dependencies of {@link ModelsSection} (slot `inject`). */
+export interface ModelsSectionInjected {
+  /** The page store (loaded on mount, refreshed on pushed invalidations). */
+  controller: ModelsSettingsStore
+  /** uSES subscription hook bound to the store. */
+  useSnapshot: SnapshotSelectorHook<ModelsSettingsState>
+  /** Wire faces the editor writes through. */
+  api: Pick<IApiClient, 'settings' | 'credentials'>
+  /** Section copy. */
+  t: (key: keyof typeof en) => string
+}
+
+/**
+ * Props delivered by the slot outlet: the inject face spread flat (the
+ * renderer erases the share boundary at the render call).
+ */
+export type ModelsSectionProps = Partial<ModelsSectionInjected>
+
+/** The editor target: an existing row or a dormant directory entry. */
+interface EditorTarget {
+  provider: string
+  displayName: string
+  settingsNs: string
+  settingsPath: readonly string[]
+}
+
+/**
+ * Remove one user-added provider profile by unsetting its path in the stored
+ * user section, then reload. The removal names the profile rather than
+ * rebuilding the section: this page only ever holds the redacted descriptor,
+ * so a rebuilt section would drop every literal secret stored elsewhere in
+ * the namespace along with the profile being removed.
+ * @param api - settings wire face.
+ * @param controller - the page store to refresh.
+ * @param target - the provider's settings address.
+ * @returns the failure message, or undefined once the write and reload landed.
+ */
+export async function removeProviderProfile(
+  api: Pick<IApiClient, 'settings'>,
+  controller: ModelsSettingsStore,
+  target: { settingsNs: string; settingsPath: readonly string[] },
+): Promise<string | undefined> {
+  let response
+  try {
+    response = await api.settings.mutate({
+      ns: target.settingsNs,
+      ops: [{ op: 'unset', path: [...target.settingsPath] }],
+    })
+  } catch (error) {
+    // The transport rejected rather than answering; the caller must be able
+    // to say so instead of the row silently staying put.
+    return messageOf(error)
+  }
+  if (!response.result.ok) return response.result.error.message
+  await controller.load()
+  return undefined
+}
+
+/**
+ * Whether a whole-section provider still needs its first key: nothing marks
+ * the credential configured and no literal `apiKey` is stored, so the page
+ * opens the setup card instead of showing a row.
+ * @param row - the joined provider row.
+ * @returns whether to render the setup card.
+ */
+export function needsSetup(row: ProviderRow): boolean {
+  if (row.entry.settingsPath.length > 0) return false
+  if (row.credential?.configured === true) return false
+  return !row.literalApiKeyConfigured
+}
+
+function targetOf(row: ProviderRow): EditorTarget {
+  return {
+    provider: row.entry.provider,
+    displayName: row.entry.displayName,
+    settingsNs: row.entry.settingsNs,
+    settingsPath: row.entry.settingsPath,
+  }
+}
+
+/**
+ * Render the Models section content column.
+ * @param props - slot-delivered injected dependencies.
+ * @returns the section, or null while the shell has not injected yet.
+ */
+export function ModelsSection(props: ModelsSectionProps): ReactNode {
+  const { controller, useSnapshot, api, t } = props
+  if (controller === undefined || useSnapshot === undefined || api === undefined || t === undefined) return null
+  return <Loaded injected={{ controller, useSnapshot, api, t }} />
+}
+
+function Loaded({ injected }: { injected: ModelsSectionInjected }): ReactNode {
+  const { controller, api, t } = injected
+  const state = injected.useSnapshot(snapshot => snapshot)
+  const [editing, setEditing] = useState<EditorTarget | undefined>(undefined)
+  const [adding, setAdding] = useState(false)
+
+  const closeEditor = (changed: boolean): void => {
+    setEditing(undefined)
+    setAdding(false)
+    if (changed) void controller.load()
+  }
+
+  if (state.status === 'idle') void controller.load()
+  if (state.status === 'error') {
+    /* v8 ignore next -- an error status always carries text; the fallback satisfies the nullable type */
+    const errorText = state.error ?? ''
+    return (
+      <div className={styles['section']}>
+        <p className={styles['error']}>{`${t('loadFailed')}: ${errorText}`}</p>
+        <button type="button" className={styles['secondaryButton']} onClick={() => { void controller.load() }}>
+          {t('retry')}
+        </button>
+      </div>
+    )
+  }
+
+  const configured = state.rows.filter(row => row.configured)
+  const addable = state.rows.filter(row => !row.configured && row.entry.settingsNs !== '')
+  const addTarget = adding ? editing : undefined
+  const addNamespace = addTarget === undefined ? undefined : state.namespaces.get(addTarget.settingsNs)
+
+  return (
+    <div className={styles['section']}>
+      <h2 className={styles['title']}>{t('title')}</h2>
+      <p className={styles['intro']}>{t('intro')}</p>
+      {!state.writable && state.status === 'ready' ? <p className={styles['notice']}>{t('readOnly')}</p> : null}
+      <ul className={styles['rows']}>
+        {configured.map((row) => {
+          const target = targetOf(row)
+          const namespace = state.namespaces.get(target.settingsNs)
+          /* v8 ignore next -- the join marks a row configured only when its namespace resolved */
+          if (namespace === undefined) return null
+          if (needsSetup(row)) {
+            // First-run posture: the provider exists but has no key — the
+            // setup card IS its presence on the page.
+            return (
+              <li key={row.entry.provider} className={styles['setupCard']}>
+                <ProviderEditor
+                  provider={target.provider}
+                  displayName={target.displayName}
+                  namespace={namespace}
+                  settingsPath={target.settingsPath}
+                  api={api}
+                  t={t}
+                  readOnly={!state.writable}
+                  onClose={closeEditor}
+                />
+              </li>
+            )
+          }
+          const open = !adding && editing?.provider === row.entry.provider
+          return (
+            <li key={row.entry.provider} className={styles['rowCard']}>
+              <div className={styles['rowHead']}>
+                <span className={styles['rowName']}>{row.entry.displayName}</span>
+                <span className={styles['badges']}>
+                  {row.entry.active
+                    ? <span className={styles['badgeOk']}>{t('active')}</span>
+                    : <span className={styles['badgeMuted']}>{t('dormant')}</span>}
+                </span>
+                <span className={styles['rowActions']}>
+                  <button
+                    type="button"
+                    className={styles['secondaryButton']}
+                    onClick={() => { setAdding(false); setEditing(open ? undefined : target) }}
+                  >
+                    {t('edit')}
+                  </button>
+                  {row.removable
+                    ? (
+                      <button
+                        type="button"
+                        className={styles['dangerButton']}
+                        disabled={!state.writable}
+                        onClick={() => {
+                          void removeProviderProfile(api, controller, target).then((failure) => {
+                            if (failure !== undefined) controller.fail(failure)
+                          })
+                        }}
+                      >
+                        {t('remove')}
+                      </button>
+                    )
+                    : null}
+                </span>
+              </div>
+              {open
+                ? (
+                  <ProviderEditor
+                    provider={target.provider}
+                    displayName={target.displayName}
+                    namespace={namespace}
+                    settingsPath={target.settingsPath}
+                    api={api}
+                    t={t}
+                    readOnly={!state.writable}
+                    onClose={closeEditor}
+                  />
+                )
+                : null}
+            </li>
+          )
+        })}
+      </ul>
+      <div className={styles['addBlock']}>
+        {addTarget !== undefined && addNamespace !== undefined
+          ? (
+            <div className={styles['addCard']}>
+              <div className={styles['field']}>
+                <span className={styles['fieldLabel']}>{t('provider')}</span>
+                <select
+                  className={styles['input']}
+                  value={addTarget.provider}
+                  aria-label={t('provider')}
+                  onChange={(event) => {
+                    const row = addable.find(candidate => candidate.entry.provider === event.target.value)
+                    /* v8 ignore next -- the select only lists addable rows */
+                    if (row === undefined) return
+                    setEditing(targetOf(row))
+                  }}
+                >
+                  {addable.map(row => (
+                    <option key={row.entry.provider} value={row.entry.provider}>{row.entry.displayName}</option>
+                  ))}
+                </select>
+              </div>
+              <ProviderEditor
+                key={addTarget.provider}
+                provider={addTarget.provider}
+                displayName={addTarget.displayName}
+                hideTitle
+                namespace={addNamespace}
+                settingsPath={addTarget.settingsPath}
+                api={api}
+                t={t}
+                readOnly={!state.writable}
+                onClose={closeEditor}
+              />
+            </div>
+          )
+          : (
+            <button
+              type="button"
+              className={styles['addButton']}
+              disabled={addable.length === 0 || !state.writable}
+              onClick={() => {
+                const first = addable[0]
+                /* v8 ignore next -- the button is disabled while nothing is addable */
+                if (first === undefined) return
+                setAdding(true)
+                setEditing(targetOf(first))
+              }}
+            >
+              {`+ ${t('add')}`}
+            </button>
+          )}
+      </div>
+    </div>
+  )
 }
diff --git a/packages/client/ui-models/src/client/ProviderEditor.tsx b/packages/client/ui-models/src/client/ProviderEditor.tsx
new file mode 100644
index 0000000000..07b5dfae54
--- /dev/null
+++ b/packages/client/ui-models/src/client/ProviderEditor.tsx
@@ -0,0 +1,334 @@
+/**
+ * One provider's editor card, hand-written per adapter family: the primary
+ * field is a single write-only **API key** input (the page never asks for an
+ * environment-variable name — a typed key stores through `credentials.set`
+ * under the profile's reference, deriving `<ROUTE>_API_KEY` when the profile
+ * has none, and the pi-ai profile records that derivation as `apiKeyEnv`);
+ * the collapsed 自定义设置 area carries the per-family extras (`baseURL` for
+ * both families, plus `reasoningEffort` for deepseek / `reasoning` for
+ * pi-ai). Everything else stays owned by `settings.yaml`. Profile edits land as
+ * minimal `settings.mutate` path ops against the stored section — the card
+ * reads the redacted descriptor, so it names only the fields it can see and a
+ * stored literal secret is never collaterally removed.
+ */
+
+import { useEffect, useMemo, useState } from 'react'
+import type { ReactNode } from 'react'
+import type { CredentialView, IApiClient, SettingsNamespaceView, SettingsPathOpView } from '@deepseek-ai/dsh-client-connection/client'
+import {
+  deletePath, getPath, nodeAtPath, rehydrateSchema, setPath, validateDraft,
+} from '@deepseek-ai/dsh-client-schema-form'
+import { deriveKeyRef, messageOf } from './store.ts'
+import type { en } from './locales.ts'
+import styles from './ModelsSection.module.css'
+
+/** Per-adapter-family curated field sets (unknown namespaces get the hint alone). */
+type EditorLayout = 'deepseek' | 'pi-ai' | 'unknown'
+
+/** Reasoning vocabularies per layout; the empty option means "inherit". */
+const EFFORT_CHOICES: Record<'deepseek' | 'pi-ai', readonly string[]> = {
+  deepseek: ['off', 'high', 'max'],
+  'pi-ai': ['off', 'minimal', 'low', 'medium', 'high', 'xhigh', 'max'],
+}
+
+/** The draft key the effort select edits, per layout. */
+const EFFORT_FIELD: Record<'deepseek' | 'pi-ai', string> = {
+  deepseek: 'reasoningEffort',
+  'pi-ai': 'reasoning',
+}
+
+/** The public DeepSeek endpoint shown as the deepseek base-URL placeholder. */
+const DEEPSEEK_PUBLIC_BASE_URL = 'https://api.deepseek.com'
+
+/** Props of {@link ProviderEditor}. */
+export interface ProviderEditorProps {
+  /** Provider route id. */
+  provider: string
+  /** Display name for the card title. */
+  displayName: string
+  /** Hide the title row (the add card renders its own provider select). */
+  hideTitle?: boolean
+  /** The owning namespace view (schema, layers, secrets). */
+  namespace: SettingsNamespaceView
+  /** Path from the section root to this provider's profile. */
+  settingsPath: readonly string[]
+  /** Wire faces for writes. */
+  api: Pick<IApiClient, 'settings' | 'credentials'>
+  /** Section copy. */
+  t: (key: keyof typeof en) => string
+  /** Disable writes (read-only settings provider). */
+  readOnly: boolean
+  /** Close the editor; `changed` reports whether an Apply committed. */
+  onClose: (changed: boolean) => void
+}
+
+/** A user-section subtree as a plain draft object (absent → empty). */
+function draftAt(namespace: SettingsNamespaceView, path: readonly string[]): Record<string, unknown> {
+  const subtree = getPath(namespace.user, path)
+  if (typeof subtree !== 'object' || subtree === null || Array.isArray(subtree)) return {}
+  return structuredClone(subtree) as Record<string, unknown>
+}
+
+/**
+ * The minimal path ops carrying `after` over `before`, both as the card sees
+ * them (that is, redacted). Only keys the card observed are named: a stored
+ * `role('secret')` field appears in neither side, so it produces no op and
+ * survives the write — the whole reason edits are path-addressed rather than
+ * a rebuilt section.
+ * @param base - path of the edited subtree inside the user section.
+ * @param before - the subtree as loaded, or undefined when it is new.
+ * @param after - the subtree as edited.
+ * @returns ordered set/unset ops; empty when nothing changed.
+ */
+export function pathOps(
+  base: readonly string[],
+  before: unknown,
+  after: Record<string, unknown>,
+): SettingsPathOpView[] {
+  const previous = typeof before === 'object' && before !== null && !Array.isArray(before)
+    ? before as Record<string, unknown>
+    : {}
+  const ops: SettingsPathOpView[] = []
+  for (const [key, value] of Object.entries(after)) {
+    if (JSON.stringify(previous[key]) === JSON.stringify(value)) continue
+    ops.push({ op: 'set', path: [...base, key], value })
+  }
+  for (const key of Object.keys(previous)) {
+    if (!(key in after)) ops.push({ op: 'unset', path: [...base, key] })
+  }
+  return ops
+}
+
+/** The editor layout the owning namespace selects. */
+function layoutOf(ns: string): EditorLayout {
+  if (ns === 'llm-deepseek') return 'deepseek'
+  if (ns === 'llm-pi-ai') return 'pi-ai'
+  return 'unknown'
+}
+
+/** The credential reference this profile resolves keys through. */
+function refFor(namespace: SettingsNamespaceView, path: readonly string[], provider: string): string {
+  const profile = getPath(namespace.value, path)
+  const named = typeof profile === 'object' && profile !== null
+    ? (profile as { apiKeyEnv?: unknown }).apiKeyEnv
+    : undefined
+  return typeof named === 'string' && named.length > 0 ? named : deriveKeyRef(provider)
+}
+
+/**
+ * Render one provider's editing card.
+ * @param props - the addressed profile plus wire faces and copy.
+ * @returns the editor card.
+ */
+export function ProviderEditor(props: ProviderEditorProps): ReactNode {
+  const { namespace, settingsPath, api, t } = props
+  const [draft, setDraft] = useState<Record<string, unknown>>(() => draftAt(namespace, settingsPath))
+  const [keyDraft, setKeyDraft] = useState('')
+  const [keyState, setKeyState] = useState<CredentialView | undefined>(undefined)
+  const [busy, setBusy] = useState(false)
+  const [failure, setFailure] = useState<string | undefined>(undefined)
+  // The revision this card opened at. A write carrying it is refused if
+  // anything else — another tab, an external edit of settings.yaml — moved the
+  // namespace meanwhile, instead of silently overwriting that change.
+  const [openedAt] = useState(() => namespace.revision)
+  const root = useMemo(() => rehydrateSchema(namespace.schema), [namespace.schema])
+  const node = useMemo(() => nodeAtPath(root, settingsPath), [root, settingsPath])
+  const fallback = getPath(namespace.value, settingsPath)
+  const disabled = props.readOnly || busy
+  const layout = layoutOf(namespace.ns)
+  const keyRef = refFor(namespace, settingsPath, props.provider)
+
+  useEffect(() => {
+    let stale = false
+    setKeyState(undefined)
+    // The key state is a placeholder hint, not a precondition for editing:
+    // neither a business rejection nor a transport failure may reach the
+    // browser as an unhandled rejection, so the card simply renders without
+    // the "already configured" hint.
+    void api.credentials.describe({ refs: [keyRef] }).then(
+      (response) => {
+        if (stale || !response.result.ok) return
+        setKeyState(response.result.value.credentials[keyRef])
+      },
+      () => undefined,
+    )
+    return () => { stale = true }
+  }, [api.credentials, keyRef])
+
+  const stringAt = (source: unknown, key: string): string | undefined => {
+    const value = getPath(source, [key])
+    return typeof value === 'string' && value.length > 0 ? value : undefined
+  }
+  const setField = (key: string, next: string | undefined): void => {
+    setDraft(current => next === undefined ? deletePath(current, [key]) : setPath(current, [key], next))
+  }
+
+  /**
+   * The write for this card, or a failure message. Every edit travels as
+   * path ops against the STORED section: the draft comes from the redacted
+   * descriptor, so a wholesale replace rebuilt from it would delete the
+   * literal secrets the wire never returned. Ops name only the fields this
+   * card can see, so a stored secret is untouched by construction.
+   */
+  const applyOnce = async (): Promise<string | undefined> => {
+    const ns = namespace.ns
+    const original = getPath(namespace.user, settingsPath)
+    // The pi-ai profile must name the reference the key stores under, so a
+    // dormant add (or a legacy profile without one) records the derivation.
+    const next = layout === 'pi-ai' && stringAt(draft, 'apiKeyEnv') === undefined
+      && stringAt(fallback, 'apiKeyEnv') === undefined
+      ? setPath(draft, ['apiKeyEnv'], keyRef)
+      : draft
+    /* v8 ignore next -- apply is only reachable from the rendered card, which required a resolved node */
+    if (node !== undefined && settingsPath.length === 0) {
+      const sectionError = validateDraft(node, next)
+      if (sectionError !== undefined) return sectionError
+    }
+    const ops = pathOps(settingsPath, original, next)
+    if (ops.length > 0) {
+      const response = await api.settings.mutate({ ns, ops, expectedRevision: openedAt })
+      if (!response.result.ok) {
+        return response.result.error.code === 'settings-conflict'
+          ? t('conflict')
+          : response.result.error.message
+      }
+    }
+    if (keyDraft.length > 0) {
+      const stored = await api.credentials.set({ ref: keyRef, value: keyDraft })
+      if (!stored.result.ok) return stored.result.error.message
+    }
+    setKeyDraft('')
+    return undefined
+  }
+
+  const apply = async (): Promise<void> => {
+    setBusy(true)
+    setFailure(undefined)
+    try {
+      const failure = await applyOnce()
+      if (failure !== undefined) {
+        setFailure(failure)
+        return
+      }
+      props.onClose(true)
+    } catch (error) {
+      // A transport failure (disconnect, a request the host refuses) rejects
+      // rather than answering; without this the card would stay busy forever
+      // with no error shown.
+      setFailure(messageOf(error))
+    } finally {
+      setBusy(false)
+    }
+  }
+
+  if (node === undefined) {
+    // A directory entry addressing a position its schema cannot resolve is a
+    // host-side inconsistency; showing it beats a blank card.
+    return <p className={styles['error']}>{`${props.provider}: unresolvable settings path`}</p>
+  }
+
+  const keyLocked = keyState?.writable === false
+
+  /**
+   * The curated fields of one known adapter family. Taking the narrowed
+   * family as a parameter is what makes `EFFORT_FIELD` total here: an
+   * unknown namespace never reaches this body.
+   */
+  const curatedFields = (family: 'deepseek' | 'pi-ai'): ReactNode => {
+    const effortField = EFFORT_FIELD[family]
+    return (
+      <>
+        <div className={styles['field']}>
+          <span className={styles['fieldLabel']}>{t('keyInput')}</span>
+          <input
+            className={styles['input']}
+            type="password"
+            autoComplete="off"
+            value={keyDraft}
+            placeholder={keyLocked
+              ? t('keyEnvLocked')
+              : keyState?.configured === true ? t('keyStored') : t('keyPlaceholder')}
+            aria-label={t('keyInput')}
+            disabled={disabled || keyLocked}
+            onChange={(event) => { setKeyDraft(event.target.value) }}
+          />
+        </div>
+        <details className={styles['customized']}>
+          <summary className={styles['customizedSummary']}>{t('customized')}</summary>
+          <div className={styles['customizedBody']}>
+            <div className={styles['field']}>
+              <span className={styles['fieldLabel']}>{t('baseUrl')}</span>
+              <input
+                className={styles['input']}
+                type="text"
+                value={stringAt(draft, 'baseURL') ?? ''}
+                placeholder={family === 'deepseek'
+                  ? DEEPSEEK_PUBLIC_BASE_URL
+                  : stringAt(fallback, 'baseURL') ?? t('baseUrlDefault')}
+                aria-label={t('baseUrl')}
+                disabled={disabled}
+                onChange={(event) => {
+                  setField('baseURL', event.target.value === '' ? undefined : event.target.value)
+                }}
+              />
+            </div>
+            <div className={styles['field']}>
+              <span className={styles['fieldLabel']}>{t('effort')}</span>
+              <select
+                className={styles['input']}
+                value={stringAt(draft, effortField) ?? ''}
+                aria-label={t('effort')}
+                disabled={disabled}
+                onChange={(event) => {
+                  setField(effortField, event.target.value === '' ? undefined : event.target.value)
+                }}
+              >
+                <option value="">{t('effortInherit')}</option>
+                {EFFORT_CHOICES[family].map(choice => (
+                  <option key={choice} value={choice}>{choice}</option>
+                ))}
+              </select>
+            </div>
+          </div>
+        </details>
+      </>
+    )
+  }
+
+  return (
+    <div className={styles['editor']}>
+      {props.hideTitle === true
+        ? null
+        : (
+          <div className={styles['editorHeader']}>
+            <span className={styles['editorTitle']}>{props.displayName}</span>
+            {props.provider !== props.displayName
+              ? <span className={styles['editorRoute']}>{props.provider}</span>
+              : null}
+          </div>
+        )}
+      {layout === 'unknown'
+        ? <p className={styles['advancedHint']}>{`${t('advancedHint')} (${namespace.ns})`}</p>
+        : curatedFields(layout)}
+      {failure !== undefined ? <p className={styles['error']}>{failure}</p> : null}
+      <div className={styles['editorActions']}>
+        <button
+          type="button"
+          className={styles['secondaryButton']}
+          disabled={busy}
+          onClick={() => { props.onClose(false) }}
+        >
+          {t('cancel')}
+        </button>
+        <button
+          type="button"
+          className={styles['primaryButton']}
+          disabled={disabled || layout === 'unknown'}
+          onClick={() => { void apply() }}
+        >
+          {busy ? t('applying') : t('apply')}
+        </button>
+      </div>
+    </div>
+  )
+}
diff --git a/packages/client/ui-models/src/client/index.ts b/packages/client/ui-models/src/client/index.ts
index 5abcb65bcf..6aa925ae7f 100644
--- a/packages/client/ui-models/src/client/index.ts
+++ b/packages/client/ui-models/src/client/index.ts
@@ -1,51 +1,119 @@
 /**
- * Models settings section plugin, browser half. Registers the `models` nav
- * entry into the shell-declared `settings.section` list slot; the content
- * column is intentionally empty until model management lands. Export
- * discipline: packages/client/AGENTS.md.
+ * Models settings plugin, browser half. Registers the `models` nav entry and
+ * official-DeepSeek first-run overlay into shell-declared slots. Both consume
+ * one provider/settings/credential join; the overlay routes missing-key users
+ * to the full page's single credential editor. Export discipline:
+ * packages/client/AGENTS.md.
  */
 import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
 import { deferRegistration } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
 // Type-only: pulls the shell's SlotMap merge (the 'settings.section' entry).
 import type {} from '@deepseek-ai/dsh-client-ui-settings/client'
 // Type-only: pulls the locale plugin's Context merge (ctx.locale).
 import type {} from '@deepseek-ai/dsh-client-locale/client'
 import { ModelsSection } from './ModelsSection.tsx'
+import type { ModelsSectionInjected } from './ModelsSection.tsx'
+import { DeepSeekOnboardingDialog } from './DeepSeekOnboardingDialog.tsx'
+import type { DeepSeekOnboardingInjected } from './DeepSeekOnboardingDialog.tsx'
+import { ModelsSettingsStore } from './store.ts'
+import { en, zh } from './locales.ts'
+
+export type { ModelsSectionInjected, ModelsSectionProps } from './ModelsSection.tsx'
+export type { ModelsSettingsState, ProviderRow } from './store.ts'
+
+/**
+ * Refetch the page snapshot only after its first load: an unopened Models
+ * page must not fetch on background invalidations.
+ * @param controller - the page store.
+ */
+export function refreshIfLoaded(controller: ModelsSettingsStore): void {
+  if (controller.store.getSnapshot().status === 'idle') return
+  void controller.load()
+}
 
 /**
  * Required services (cordis fiber inject). The target slot is declared by
  * ui-settings' apply, whose activation order relative to this one is NOT
  * constrained; registration goes through declaration-aware deferral.
  */
-export const inject = ['slots', 'locale']
+export const inject = ['slots', 'locale', 'connection']
 
 /**
  * Register the Models section once the `settings.section` declaration is on
- * the ledger.
+ * the ledger, wire its store to the connection, and keep it fresh on every
+ * pushed invalidation (settings, credentials, or provider topology).
  * @param ctx - client root context.
  */
 export function apply(ctx: ClientContext): void {
   ctx.effect(() => {
     const disposers = [
-      ctx.locale.register('settings.models', 'zh', { nav: '模型' }),
-      ctx.locale.register('settings.models', 'en', { nav: 'Models' }),
+      ctx.locale.register('settings.models', 'zh', zh),
+      ctx.locale.register('settings.models', 'en', en),
     ]
     return () => { for (const dispose of disposers) dispose() }
-  }, 'ui-models: nav copy dictionaries')
+  }, 'ui-models: copy dictionaries')
+
+  const connection = ctx.get('connection') as ConnectionHandle
+  const controller = new ModelsSettingsStore(connection.api)
+  const useSnapshot = bindSnapshotSelector(controller.store)
+  const t = ctx.locale.bind('settings.models') as ModelsSectionInjected['t']
+  const injected = (): ModelsSectionInjected => ({
+    controller,
+    useSnapshot,
+    api: connection.api,
+    t,
+  })
+  const onboardingInjected = (): DeepSeekOnboardingInjected => ({
+    controller,
+    useSnapshot,
+    t,
+  })
+
+  // Pushed invalidations converge every open surface without polling: any
+  // settings/credentials/topology change refetches once the page loaded.
   ctx.effect(() => {
-    const deferred = deferRegistration(ctx.slots, 'settings.section', ModelsSection, () =>
+    const refresh = (): void => { refreshIfLoaded(controller) }
+    const disposers = [
+      ctx.on('settings/changed', refresh),
+      ctx.on('credentials/changed', refresh),
+      ctx.on('models/changed', refresh),
+      ctx.on('connection/reset', refresh),
+    ]
+    return () => { for (const dispose of disposers) dispose() }
+  }, 'ui-models: pushed invalidations')
+
+  ctx.effect(() => {
+    const section = deferRegistration(ctx.slots, 'settings.section', ModelsSection, () =>
       ctx.slots.register({
         name: 'settings.section',
         id: 'models',
         order: 10,
-        label: ctx.locale.bind('settings.models')('nav'),
+        label: t('nav'),
+        inject: injected,
       }, ModelsSection))
+    const onboarding = deferRegistration(
+      ctx.slots,
+      'settings.onboarding',
+      DeepSeekOnboardingDialog,
+      () => ctx.slots.register({
+        name: 'settings.onboarding',
+        id: 'deepseek-official',
+        order: 0,
+        inject: onboardingInjected,
+      }, DeepSeekOnboardingDialog),
+    )
     // Nav labels are registrant-localized: refresh on locale change so the
     // ledger carries fresh text (the version bump re-renders the shell).
-    const offLocale = ctx.on('locale/change', () => { deferred.refresh() })
+    const offLocale = ctx.on('locale/change', () => {
+      section.refresh()
+      onboarding.refresh()
+    })
     return () => {
       offLocale()
-      deferred.dispose()
+      section.dispose()
+      onboarding.dispose()
     }
-  }, 'ui-models: settings section registration')
+  }, 'ui-models: settings registrations')
 }
diff --git a/packages/client/ui-models/src/client/locales.ts b/packages/client/ui-models/src/client/locales.ts
new file mode 100644
index 0000000000..44339d588c
--- /dev/null
+++ b/packages/client/ui-models/src/client/locales.ts
@@ -0,0 +1,69 @@
+/** Copy dictionaries for the Models settings section. */
+
+/** English strings. */
+export const en = {
+  nav: 'Models',
+  title: 'Models',
+  intro: 'Enter your API keys to use models from the following providers.',
+  active: 'Active',
+  dormant: 'Inactive',
+  edit: 'Edit',
+  remove: 'Delete',
+  add: 'Add provider',
+  provider: 'Provider',
+  cancel: 'Cancel',
+  apply: 'Apply',
+  applying: 'Applying…',
+  readOnly: 'The settings document is read-only in this deployment.',
+  loadFailed: 'Loading the provider directory failed',
+  conflict: 'Someone else changed these settings while this card was open. Close it and reopen to edit the current values.',
+  retry: 'Retry',
+  keyInput: 'API key',
+  keyPlaceholder: 'Enter your API key',
+  keyStored: 'Configured — enter a new value to replace',
+  keyEnvLocked: 'Provided by the launch environment (read-only)',
+  customized: 'Customized settings',
+  baseUrl: 'Base URL',
+  baseUrlDefault: 'Provider default',
+  effort: 'Reasoning effort',
+  effortInherit: 'Default',
+  advancedHint: 'Other fields live in settings.yaml; edit that section directly.',
+  onboardingTitle: 'Add an API key to get started',
+  onboardingDescription: 'Configure the official DeepSeek provider to start building.',
+  onboardingGoToSettings: 'Go to settings',
+  onboardingLater: 'Configure later',
+}
+
+/** Chinese strings (same keys as {@link en}). */
+export const zh: typeof en = {
+  nav: '模型',
+  title: '模型',
+  intro: '填入各提供方的 API 密钥即可使用其模型。',
+  active: '已启用',
+  dormant: '未启用',
+  edit: '编辑',
+  remove: '删除',
+  add: '添加提供方',
+  provider: '提供方',
+  cancel: '取消',
+  apply: '保存',
+  applying: '保存中…',
+  readOnly: '当前部署的设置文档为只读。',
+  loadFailed: '加载提供方目录失败',
+  conflict: '这张卡片打开期间，这些设置已被其他地方改动。请关闭后重新打开，在当前值上编辑。',
+  retry: '重试',
+  keyInput: 'API 密钥',
+  keyPlaceholder: '输入 API 密钥',
+  keyStored: '已配置——输入新值可替换',
+  keyEnvLocked: '由启动环境提供（只读）',
+  customized: '自定义设置',
+  baseUrl: 'API 地址',
+  baseUrlDefault: '提供方默认',
+  effort: '推理强度',
+  effortInherit: '默认',
+  advancedHint: '其余字段在 settings.yaml 中，请直接编辑对应段。',
+  onboardingTitle: '添加一个 API Key 开始使用',
+  onboardingDescription: '配置 DeepSeek 官方模型，即可开始使用。',
+  onboardingGoToSettings: '前往配置',
+  onboardingLater: '稍后配置',
+}
diff --git a/packages/client/ui-models/src/client/store.ts b/packages/client/ui-models/src/client/store.ts
new file mode 100644
index 0000000000..282f21fe75
--- /dev/null
+++ b/packages/client/ui-models/src/client/store.ts
@@ -0,0 +1,285 @@
+/**
+ * Models settings page store: one snapshot joining the configurable-provider
+ * directory (`llm.providers`), the settings namespaces (`settings.describe`),
+ * and the referenced credentials (`credentials.describe`). The host stays the
+ * single fact source — every mutation writes through the wire and the page
+ * re-renders from the next describe, pushed or refetched.
+ */
+
+import type {
+  ConfigurableProviderView, CredentialView, IApiClient, SettingsNamespaceView,
+} from '@deepseek-ai/dsh-client-connection/client'
+import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { getPath, hasPath } from '@deepseek-ai/dsh-client-schema-form'
+
+/** One provider row the page renders. */
+export interface ProviderRow {
+  /** The directory entry (route id, display name, settings address, live state). */
+  entry: ConfigurableProviderView
+  /** Whether any layer configures this provider (its profile resolves). */
+  configured: boolean
+  /** Whether the user layer alone carries the profile (removal restores the base). */
+  removable: boolean
+  /** The credential reference the resolved profile names, when one does. */
+  apiKeyEnv: string | undefined
+  /** Credential state for {@link apiKeyEnv}, once described. */
+  credential: CredentialView | undefined
+  /** Whether the redacted secret sidecar reports an effective literal `apiKey`. */
+  literalApiKeyConfigured: boolean
+}
+
+/** Page snapshot. */
+export interface ModelsSettingsState {
+  status: 'idle' | 'loading' | 'ready' | 'error'
+  /** Whole-load failure text; row-level write failures stay in the editor. */
+  error: string | null
+  /** Credential enrichment failure; provider/settings rows remain usable. */
+  credentialError: string | null
+  /** Whether the settings provider accepts writes. */
+  writable: boolean
+  /** Every configurable provider joined with its configured/credential state. */
+  rows: readonly ProviderRow[]
+  /** Namespace views by ns, for the editor's schema/layers/secrets. */
+  namespaces: ReadonlyMap<string, SettingsNamespaceView>
+}
+
+/**
+ * Human text for a rejected wire call. A transport failure rejects with an
+ * Error; a host or a runtime can reject with anything, and the page still has
+ * to say something.
+ * @param error - the rejection value.
+ * @returns the message to show.
+ */
+export function messageOf(error: unknown): string {
+  return error instanceof Error ? error.message : String(error)
+}
+
+/**
+ * Derive the conventional credential reference for a provider route: the v1
+ * page never asks for an environment-variable name, so a typed key stores
+ * under this derived reference and the profile records it as `apiKeyEnv`.
+ * @param provider - provider route id (e.g. `anthropic`, `minimax-cn`).
+ * @returns the derived reference name (e.g. `MINIMAX_CN_API_KEY`).
+ */
+export function deriveKeyRef(provider: string): string {
+  return `${provider.toUpperCase().replace(/[^A-Z0-9]+/g, '_')}_API_KEY`
+}
+
+/** The credential reference a resolved profile names (its `apiKeyEnv` field). */
+function apiKeyEnvOf(namespace: SettingsNamespaceView | undefined, path: readonly string[]): string | undefined {
+  if (namespace === undefined) return undefined
+  const profile = getPath(namespace.value, path)
+  if (typeof profile !== 'object' || profile === null) return undefined
+  const ref = (profile as { apiKeyEnv?: unknown }).apiKeyEnv
+  return typeof ref === 'string' && ref.length > 0 ? ref : undefined
+}
+
+/** Whether one namespace's redacted sidecar reports a set literal API key. */
+function literalApiKeyConfigured(
+  namespace: SettingsNamespaceView | undefined,
+  path: readonly string[],
+): boolean {
+  if (namespace === undefined) return false
+  const secretPath = [...path, 'apiKey']
+  return namespace.secrets.some(secret =>
+    secret.set
+    && secret.path.length === secretPath.length
+    && secret.path.every((key, index) => key === secretPath[index]))
+}
+
+/** The models settings page controller (one per settings surface). */
+export class ModelsSettingsStore {
+  /** The snapshot the section renders from (uSES-safe store). */
+  readonly store: SnapshotStore<ModelsSettingsState> = createSnapshotStore<ModelsSettingsState>({
+    status: 'idle', error: null, credentialError: null, writable: false, rows: [], namespaces: new Map(),
+  })
+
+  /** Latest load wins; an older response never overwrites a newer one. */
+  private generation = 0
+
+  /**
+   * @param api - the wire face (settings/credentials/llm domains).
+   */
+  constructor(private readonly api: Pick<IApiClient, 'settings' | 'credentials' | 'llm'>) {}
+
+  /**
+   * Surface a failure from an operation the page ran outside {@link load} —
+   * a row removal — on the same banner a load failure uses.
+   * @param message - the failure text to show.
+   */
+  fail(message: string): void {
+    this.store.update((s) => {
+      s.status = 'error'
+      s.error = message
+    })
+  }
+
+  /**
+   * Refresh the whole page snapshot: directory and namespaces in parallel,
+   * then one batched credential describe over every referenced ref. A
+   * failure keeps the last good rows and surfaces the error.
+   * @returns nothing; the snapshot carries the outcome.
+   */
+  async load(): Promise<void> {
+    const generation = ++this.generation
+    this.store.update((s) => { s.status = 'loading'; s.error = null })
+    let providers: ConfigurableProviderView[]
+    let writable: boolean
+    let views: SettingsNamespaceView[]
+    try {
+      const [providersResponse, settingsResponse] = await Promise.all([
+        this.api.llm.providers({}),
+        this.api.settings.describe({}),
+      ])
+      if (!providersResponse.result.ok) throw new Error(providersResponse.result.error.message)
+      if (!settingsResponse.result.ok) throw new Error(settingsResponse.result.error.message)
+      providers = providersResponse.result.value.providers
+      writable = settingsResponse.result.value.writable
+      views = settingsResponse.result.value.namespaces
+    } catch (error) {
+      if (generation !== this.generation) return
+      this.store.update((s) => {
+        s.status = 'error'
+        s.error = error instanceof Error ? error.message : String(error)
+      })
+      return
+    }
+    const namespaces = new Map(views.map(view => [view.ns, view]))
+    const rows: ProviderRow[] = providers.map((entry) => {
+      const namespace = namespaces.get(entry.settingsNs)
+      const configured = namespace !== undefined
+        && (entry.settingsPath.length === 0 || getPath(namespace.value, entry.settingsPath) !== undefined)
+      const removable = namespace !== undefined
+        && entry.settingsPath.length > 0
+        && hasPath(namespace.user, entry.settingsPath)
+        && !hasPath(namespace.base, entry.settingsPath)
+      return {
+        entry,
+        configured,
+        removable,
+        apiKeyEnv: apiKeyEnvOf(namespace, entry.settingsPath),
+        credential: undefined,
+        literalApiKeyConfigured: literalApiKeyConfigured(namespace, entry.settingsPath),
+      }
+    })
+    const refs = [...new Set(rows.flatMap(row => row.apiKeyEnv === undefined ? [] : [row.apiKeyEnv]))]
+    let credentials: Record<string, CredentialView> = {}
+    let credentialError: string | null = null
+    if (refs.length > 0) {
+      try {
+        const response = await this.api.credentials.describe({ refs })
+        // Credential state is an enrichment for the Models page: neither a
+        // business rejection nor a transport failure fails the load. The
+        // onboarding projection below retains the failure distinction.
+        if (response.result.ok) credentials = response.result.value.credentials
+        else credentialError = response.result.error.message
+      } catch (error) {
+        credentialError = messageOf(error)
+      }
+    }
+    if (generation !== this.generation) return
+    this.store.update((s) => {
+      s.status = 'ready'
+      s.error = null
+      s.credentialError = credentialError
+      s.writable = writable
+      s.rows = rows.map(row => ({
+        ...row,
+        ...row.apiKeyEnv !== undefined && credentials[row.apiKeyEnv] !== undefined
+          ? { credential: credentials[row.apiKeyEnv] }
+          : {},
+      }))
+      s.namespaces = namespaces
+    })
+  }
+}
+
+/** DeepSeek onboarding readiness derived only from the shared Models join. */
+export type DeepSeekReadiness =
+  | { kind: 'loading' }
+  | { kind: 'adapter-absent' }
+  | { kind: 'configured' }
+  | { kind: 'credential-missing' }
+  | {
+    kind: 'unavailable'
+    reason:
+      | 'load-failed'
+      | 'provider-inactive'
+      | 'settings-unavailable'
+      | 'credential-ref-unavailable'
+      | 'credentials-unavailable'
+      | 'settings-read-only'
+      | 'credential-read-only'
+  }
+
+/**
+ * Project official-DeepSeek readiness from the provider/settings/credential
+ * join used by the Models page. A missing official configurable-provider
+ * declaration means the adapter is not repairable by navigating to Models.
+ * @param state - current shared Models join snapshot.
+ * @returns the onboarding state without reading a parallel fact source.
+ */
+export function deepSeekReadiness(state: ModelsSettingsState): DeepSeekReadiness {
+  if ((state.status === 'idle' || state.status === 'loading') && state.rows.length === 0) {
+    return { kind: 'loading' }
+  }
+  if (state.status === 'error') {
+    return {
+      kind: 'unavailable',
+      reason: 'load-failed',
+    }
+  }
+  const row = state.rows.find(candidate =>
+    candidate.entry.provider === 'deepseek-official'
+    && candidate.entry.settingsNs === 'llm-deepseek'
+    && candidate.entry.settingsPath.length === 0)
+  if (row === undefined) return { kind: 'adapter-absent' }
+  if (!row.entry.active) {
+    return {
+      kind: 'unavailable',
+      reason: 'provider-inactive',
+    }
+  }
+  if (!row.configured) {
+    return {
+      kind: 'unavailable',
+      reason: 'settings-unavailable',
+    }
+  }
+  if (row.literalApiKeyConfigured) return { kind: 'configured' }
+  if (row.apiKeyEnv === undefined) {
+    return {
+      kind: 'unavailable',
+      reason: 'credential-ref-unavailable',
+    }
+  }
+  if (state.credentialError !== null) {
+    return {
+      kind: 'unavailable',
+      reason: 'credentials-unavailable',
+    }
+  }
+  if (row.credential === undefined) {
+    return {
+      kind: 'unavailable',
+      reason: 'credentials-unavailable',
+    }
+  }
+  if (row.credential.configured) {
+    return { kind: 'configured' }
+  }
+  if (!state.writable) {
+    return {
+      kind: 'unavailable',
+      reason: 'settings-read-only',
+    }
+  }
+  if (!row.credential.writable) {
+    return {
+      kind: 'unavailable',
+      reason: 'credential-read-only',
+    }
+  }
+  return { kind: 'credential-missing' }
+}
diff --git a/packages/client/ui-models/tests/apply.spec.ts b/packages/client/ui-models/tests/apply.spec.ts
index 1842000675..c247960cc4 100644
--- a/packages/client/ui-models/tests/apply.spec.ts
+++ b/packages/client/ui-models/tests/apply.spec.ts
@@ -1,29 +1,39 @@
 /** Models section registration: declaration-aware deferral, locale re-registration, and HMR recovery. */
 import { Context } from 'cordis'
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
-import { apply, inject } from '@deepseek-ai/dsh-client-ui-models/client'
+import { apply, inject, refreshIfLoaded } from '@deepseek-ai/dsh-client-ui-models/client'
 import { ModelsSection } from '../src/client/ModelsSection.tsx'
+import { DeepSeekOnboardingDialog } from '../src/client/DeepSeekOnboardingDialog.tsx'
 
 async function bench() {
   const ctx = new Context()
   await ctx.plugin(SlotsService).await()
   const locale = new LocaleService(ctx)
   ctx.provide('locale', locale)
+  // The apply path only captures the wire face; no call leaves this fake
+  // until a section actually loads.
+  ctx.provide('connection', { api: {} } as never)
   return { ctx, slots: ctx.get('slots') as SlotsService, locale }
 }
 
 function declare(slots: SlotsService): () => void {
   return slots.register(
-    { name: 'root', children: { 'settings.section': { kind: 'list', scope: 'root' } } } as never,
+    {
+      name: 'root',
+      children: {
+        'settings.section': { kind: 'list', scope: 'root' },
+        'settings.onboarding': { kind: 'list', scope: 'root' },
+      },
+    } as never,
     () => null,
   )
 }
 
 describe('ui-models apply', () => {
   it('declares the services it uses', () => {
-    expect(inject).toEqual(['slots', 'locale'])
+    expect(inject).toEqual(['slots', 'locale', 'connection'])
   })
 
   it('registers the models nav entry for declarations before or after apply', async () => {
@@ -32,14 +42,24 @@ describe('ui-models apply', () => {
     await before.ctx.plugin({ inject: [...inject], apply }).await()
     const entry = before.slots.entries('settings.section')[0]!
     expect(entry.component).toBe(ModelsSection)
-    expect(entry.options).toEqual({ id: 'models', order: 10, label: '模型' })
+    expect(entry.options).toMatchObject({ id: 'models', order: 10, label: '模型' })
+    const injected = (entry.inject as unknown as () => import('../src/client/ModelsSection.tsx').ModelsSectionInjected)()
+    expect(injected.t('nav')).toBe('模型')
+    expect(typeof injected.controller.load).toBe('function')
+    expect(typeof injected.useSnapshot).toBe('function')
+    expect(injected.api).toBeDefined()
+    const onboarding = before.slots.entries('settings.onboarding')[0]!
+    expect(onboarding.component).toBe(DeepSeekOnboardingDialog)
+    expect(onboarding.options).toMatchObject({ id: 'deepseek-official', order: 0 })
 
     const after = await bench()
     await after.ctx.plugin({ inject: [...inject], apply }).await()
     expect(after.slots.entries('settings.section')).toHaveLength(0)
+    expect(after.slots.entries('settings.onboarding')).toHaveLength(0)
     declare(after.slots)
     await Promise.resolve()
     expect(after.slots.entries('settings.section')[0]!.component).toBe(ModelsSection)
+    expect(after.slots.entries('settings.onboarding')[0]!.component).toBe(DeepSeekOnboardingDialog)
     // The self-inflicted ledger notifications hit the duplicate guard.
     expect(after.slots.entries('settings.section')).toHaveLength(1)
   })
@@ -71,9 +91,11 @@ describe('ui-models apply', () => {
     // disposer variable goes stale.
     redeclare()
     expect(b.slots.entries('settings.section')).toHaveLength(0)
+    expect(b.slots.entries('settings.onboarding')).toHaveLength(0)
     declare(b.slots)
     await Promise.resolve()
     expect(b.slots.entries('settings.section')[0]!.component).toBe(ModelsSection)
+    expect(b.slots.entries('settings.onboarding')[0]!.component).toBe(DeepSeekOnboardingDialog)
     // The locale path also recovers through the same ledger re-check.
     b.locale.setLocale('en')
     expect(b.slots.entries('settings.section')[0]!.options.label).toBe('Models')
@@ -88,8 +110,52 @@ describe('ui-models apply', () => {
     expect(b.locale.bind('settings.models')('nav')).toBe('模型')
     await fiber.dispose()
     expect(b.slots.entries('settings.section')).toHaveLength(0)
+    expect(b.slots.entries('settings.onboarding')).toHaveLength(0)
     // The (ns, locale) seats are free again — the dictionary disposers ran.
     expect(() => b.locale.register('settings.models', 'zh', {})).not.toThrow()
     expect(() => b.locale.register('settings.models', 'en', {})).not.toThrow()
   })
 })
+
+describe('pushed invalidations', () => {
+  it('ignores invalidations before the page ever loaded', async () => {
+    const b = await bench()
+    declare(b.slots)
+    await b.ctx.plugin({ inject: [...inject], apply }).await()
+    // The fake wire face has no methods: a fetch attempt would throw.
+    b.ctx.emit('settings/changed', 'llm-pi-ai')
+    b.ctx.emit('credentials/changed', 'OPENAI_API_KEY')
+    b.ctx.emit('models/changed')
+    b.ctx.emit('connection/reset')
+  })
+
+  it('refreshes a loaded page and skips an idle one', () => {
+    const loads: number[] = []
+    const controller = {
+      store: { getSnapshot: () => ({ status: 'ready' }) },
+      load: () => { loads.push(1); return Promise.resolve() },
+    }
+    refreshIfLoaded(controller as unknown as import('../src/client/store.ts').ModelsSettingsStore)
+    expect(loads).toHaveLength(1)
+    const idle = {
+      store: { getSnapshot: () => ({ status: 'idle' }) },
+      load: () => { loads.push(2); return Promise.resolve() },
+    }
+    refreshIfLoaded(idle as unknown as import('../src/client/store.ts').ModelsSettingsStore)
+    expect(loads).toHaveLength(1)
+  })
+
+  it('routes pushed credential invalidation into the shared onboarding join', async () => {
+    const b = await bench()
+    declare(b.slots)
+    await b.ctx.plugin({ inject: [...inject], apply }).await()
+    const injected = (
+      b.slots.entries('settings.onboarding')[0]!.inject as unknown as
+      () => import('../src/client/DeepSeekOnboardingDialog.tsx').DeepSeekOnboardingInjected
+    )()
+    injected.controller.store.update((state) => { state.status = 'ready' })
+    const load = vi.spyOn(injected.controller, 'load').mockResolvedValue()
+    b.ctx.emit('credentials/changed', 'DEEPSEEK_API_KEY')
+    expect(load).toHaveBeenCalledTimes(1)
+  })
+})
diff --git a/packages/client/ui-models/tests/components.spec.tsx b/packages/client/ui-models/tests/components.spec.tsx
new file mode 100644
index 0000000000..a4f3734fbd
--- /dev/null
+++ b/packages/client/ui-models/tests/components.spec.tsx
@@ -0,0 +1,606 @@
+// @vitest-environment jsdom
+/** Section, setup-card, and hand-written editor behavior over a scripted wire face. */
+import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import Schema from 'schemastery'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
+import type { RpcResponse, SettingsNamespaceView } from '@deepseek-ai/dsh-client-connection/client'
+import { ModelsSection, needsSetup, removeProviderProfile } from '../src/client/ModelsSection.tsx'
+import type { ModelsSectionInjected, ModelsSectionProps } from '../src/client/ModelsSection.tsx'
+import { pathOps } from '../src/client/ProviderEditor.tsx'
+import { deriveKeyRef, ModelsSettingsStore } from '../src/client/store.ts'
+import type { ProviderRow } from '../src/client/store.ts'
+import { en } from '../src/client/locales.ts'
+
+afterEach(cleanup)
+
+const t: ModelsSectionInjected['t'] = key => en[key]
+
+const PiAiConfig = Schema.object({
+  token: Schema.string().role('secret'),
+  providers: Schema.dict(Schema.object({
+    apiKey: Schema.string().role('secret'),
+    apiKeyEnv: Schema.string().role('credential-ref'),
+    baseURL: Schema.string(),
+    reasoning: Schema.union(['off', 'minimal', 'low', 'medium', 'high', 'xhigh', 'max']),
+    headers: Schema.dict(Schema.string()),
+  })),
+})
+
+const DeepSeekConfig = Schema.object({
+  apiKey: Schema.string().role('secret'),
+  apiKeyEnv: Schema.string().role('credential-ref'),
+  baseURL: Schema.string().pattern(/^https:\/\//),
+  reasoningEffort: Schema.union(['off', 'high', 'max']),
+})
+
+function wireNamespaces(): SettingsNamespaceView[] {
+  return [
+    {
+      ns: 'llm-deepseek',
+      schema: JSON.parse(JSON.stringify(DeepSeekConfig.toJSON())) as unknown,
+      value: { apiKeyEnv: 'DEEPSEEK_API_KEY', baseURL: 'https://base', reasoningEffort: 'high' },
+      base: {},
+      user: { reasoningEffort: 'high' },
+      applies: 'live',
+      secrets: [{ path: ['apiKey'], set: false }],
+      revision: 0,
+    },
+    {
+      ns: 'llm-plain',
+      schema: JSON.parse(JSON.stringify(Schema.object({
+        profiles: Schema.dict(Schema.object({ note: Schema.string() })),
+      }).toJSON())) as unknown,
+      value: {},
+      applies: 'live',
+      secrets: [],
+      revision: 0,
+    },
+    {
+      ns: 'llm-pi-ai',
+      schema: JSON.parse(JSON.stringify(PiAiConfig.toJSON())) as unknown,
+      value: { providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY', baseURL: 'https://proxy', headers: { 'X-Team': 'a' } }, zombie: {} } },
+      user: { providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY', baseURL: 'https://proxy', headers: { 'X-Team': 'a' } }, zombie: {} } },
+      applies: 'live',
+      secrets: [{ path: ['token'], set: false }, { path: ['providers', 'openai', 'apiKey'], set: false }],
+      revision: 0,
+    },
+  ]
+}
+
+let nextRpc = 0
+function ok<T>(value: T): RpcResponse<T> {
+  return { rpcId: `r-${nextRpc++}` as never, result: { ok: true, value } }
+}
+function fail<T>(message: string, code = 'settings-rejected'): RpcResponse<T> {
+  return {
+    rpcId: `r-${nextRpc++}` as never,
+    result: { ok: false, error: { code, message, details: { ns: 'x' } } as never },
+  }
+}
+
+function scriptedFace(overrides: {
+  update?: ReturnType<typeof vi.fn>
+  replace?: ReturnType<typeof vi.fn>
+  mutate?: ReturnType<typeof vi.fn>
+  set?: ReturnType<typeof vi.fn>
+} = {}) {
+  const update = overrides.update ?? vi.fn(() => Promise.resolve(ok(wireNamespaces()[2])))
+  const replace = overrides.replace ?? vi.fn(() => Promise.resolve(ok(wireNamespaces()[2])))
+  const mutate = overrides.mutate ?? vi.fn(() => Promise.resolve(ok(wireNamespaces()[2])))
+  const set = overrides.set ?? vi.fn(() => Promise.resolve(ok({})))
+  const face = {
+    llm: {
+      providers: vi.fn(() => Promise.resolve(ok({
+        providers: [
+          { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [], active: true },
+          { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: true },
+          { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false },
+          { provider: 'zombie', displayName: 'zombie', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'zombie'], active: false },
+          { provider: 'broken', displayName: 'broken', settingsNs: 'llm-pi-ai', settingsPath: ['nope', 'x'], active: false },
+          { provider: 'plain', displayName: 'plain', settingsNs: 'llm-plain', settingsPath: ['profiles', 'plain'], active: false },
+        ],
+      }))),
+      models: vi.fn(() => Promise.resolve(ok({ groups: [], failures: [] }))),
+    },
+    settings: {
+      describe: vi.fn(() => Promise.resolve(ok({ writable: true, namespaces: wireNamespaces() }))),
+      update,
+      replace,
+      mutate,
+    },
+    credentials: {
+      describe: vi.fn((payload: { refs: string[] }) => Promise.resolve(ok({
+        credentials: Object.fromEntries(payload.refs.map(ref => [ref, {
+          configured: ref === 'OPENAI_API_KEY',
+          ...ref === 'OPENAI_API_KEY' ? { source: 'file' } : {},
+          writable: true,
+        }])),
+      }))),
+      set,
+      unset: vi.fn(() => Promise.resolve(ok({}))),
+    },
+  }
+  return { face, update, replace, mutate, set }
+}
+
+type WireFace = ConstructorParameters<typeof ModelsSettingsStore>[0]
+
+async function mountSection(overrides: Parameters<typeof scriptedFace>[0] = {}) {
+  const { face, update, replace, mutate, set } = scriptedFace(overrides)
+  const controller = new ModelsSettingsStore(face as unknown as WireFace)
+  await controller.load()
+  const injected: ModelsSectionInjected = {
+    controller,
+    useSnapshot: bindSnapshotSelector(controller.store),
+    api: face as never,
+    t,
+  }
+  const view = render(<ModelsSection {...injected} />)
+  return { view, face, update, replace, mutate, set, controller }
+}
+
+describe('ModelsSection', () => {
+  it('renders nothing before the slot injects its dependencies', () => {
+    const uninjected = {} as ModelsSectionProps
+    render(<ModelsSection {...uninjected} />)
+    expect(document.body.textContent).toBe('')
+  })
+
+  it('renders the unkeyed whole-section provider as an open setup card beside the rows', async () => {
+    await mountSection()
+    // DeepSeek has no configured credential and no stored apiKey → setup card.
+    expect(screen.getByText('DeepSeek')).toBeTruthy()
+    expect(screen.getByLabelText(en.keyInput)).toBeTruthy()
+    // Configured pi-ai profiles render as rows with liveness badges only.
+    expect(screen.getByText('openai')).toBeTruthy()
+    expect(screen.getAllByText(en.active)).toHaveLength(1)
+    expect(screen.getByText(en.dormant)).toBeTruthy()
+    expect(screen.getByText(`+ ${en.add}`)).toBeTruthy()
+  })
+
+  it('turns the setup card into a row once the credential reports configured', async () => {
+    const { face } = await mountSection()
+    face.credentials.describe.mockImplementation((payload: { refs: string[] }) => Promise.resolve(ok({
+      credentials: Object.fromEntries(payload.refs.map(ref => [ref, { configured: true, writable: true }])),
+    })))
+    const controller = new ModelsSettingsStore(face as unknown as WireFace)
+    await controller.load()
+    cleanup()
+    render(<ModelsSection
+      controller={controller}
+      useSnapshot={bindSnapshotSelector(controller.store)}
+      api={face as never}
+      t={t}
+    />)
+    // Now a row with an Edit button, not an open card.
+    expect(screen.getAllByText(en.edit).length).toBeGreaterThan(1)
+    expect(screen.queryByLabelText(en.keyInput)).toBeNull()
+  })
+
+  it('decides setup need from the joined credential state and literal-key sidecar', () => {
+    const entry = { provider: 'p', displayName: 'p', settingsNs: 'llm-deepseek', settingsPath: [], active: true }
+    const row = (
+      credential: ProviderRow['credential'],
+      literalApiKeyConfigured = false,
+    ): ProviderRow => ({
+      entry,
+      configured: true,
+      removable: false,
+      apiKeyEnv: 'X',
+      credential,
+      literalApiKeyConfigured,
+    })
+    expect(needsSetup(row(undefined))).toBe(true)
+    expect(needsSetup(row({ configured: true, writable: true }))).toBe(false)
+    expect(needsSetup(row(undefined, true))).toBe(false)
+    const nested = { ...row(undefined), entry: { ...entry, settingsPath: ['providers', 'x'] } }
+    expect(needsSetup(nested)).toBe(false)
+  })
+
+  it('derives conventional credential references from route ids', () => {
+    expect(deriveKeyRef('anthropic')).toBe('ANTHROPIC_API_KEY')
+    expect(deriveKeyRef('minimax-cn')).toBe('MINIMAX_CN_API_KEY')
+  })
+
+  it('names only the fields the card can see, so an unseen secret survives', () => {
+    // `before` is the REDACTED subtree: a stored literal apiKey is in neither
+    // side, so no op mentions it and the seam leaves it alone.
+    expect(pathOps(['providers', 'openai'], { baseURL: 'https://old', reasoning: 'high' }, { reasoning: 'high' }))
+      .toEqual([{ op: 'unset', path: ['providers', 'openai', 'baseURL'] }])
+    expect(pathOps([], { b: 1 }, { b: 2, d: 3 }))
+      .toEqual([{ op: 'set', path: ['b'], value: 2 }, { op: 'set', path: ['d'], value: 3 }])
+    expect(pathOps([], undefined, {})).toEqual([])
+    expect(pathOps([], { a: 1 }, { a: 1 })).toEqual([])
+  })
+
+  it('stores a typed key write-only from the setup card without touching settings', async () => {
+    const { set, update, face } = await mountSection()
+    const key = screen.getByLabelText<HTMLInputElement>(en.keyInput)
+    fireEvent.change(key, { target: { value: 'sk-live' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await waitFor(() => { expect(set).toHaveBeenCalledWith({ ref: 'DEEPSEEK_API_KEY', value: 'sk-live' }) })
+    expect(update).not.toHaveBeenCalled()
+    await waitFor(() => { expect(face.settings.describe.mock.calls.length).toBeGreaterThan(1) })
+  })
+
+  it('applies customized deepseek fields as path ops', async () => {
+    const { mutate } = await mountSection({
+      mutate: vi.fn(() => Promise.resolve(ok(wireNamespaces()[0]))),
+    })
+    fireEvent.click(screen.getByText(en.customized))
+    const baseURL = screen.getByLabelText<HTMLInputElement>(en.baseUrl)
+    // The deepseek placeholder is pinned to the public endpoint, not the
+    // effective value (which may reflect a launch-environment override).
+    expect(baseURL.placeholder).toBe('https://api.deepseek.com')
+    fireEvent.change(baseURL, { target: { value: 'https://next2' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
+    // Only the field that actually changed: reasoningEffort was already
+    // 'high' in the loaded profile, so it produces no op.
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-deepseek',
+      ops: [{ op: 'set', path: ['baseURL'], value: 'https://next2' }],
+      expectedRevision: 0,
+    })
+  })
+
+  it('clears an inherited override with an unset op, never a whole-section replace', async () => {
+    // The data-loss shape: the old path rebuilt the section from the REDACTED
+    // user layer and replaced it wholesale, deleting any stored literal key.
+    const { replace, update, mutate } = await mountSection()
+    fireEvent.click(screen.getByText(en.customized))
+    const effort = screen.getByLabelText<HTMLSelectElement>(en.effort)
+    expect(effort.value).toBe('high')
+    fireEvent.change(effort, { target: { value: '' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
+    expect(replace).not.toHaveBeenCalled()
+    expect(update).not.toHaveBeenCalled()
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-deepseek',
+      ops: [{ op: 'unset', path: ['reasoningEffort'] }],
+      expectedRevision: 0,
+    })
+  })
+
+  it('pins the deepseek placeholder and clears typed input back to inherited', async () => {
+    const { face } = scriptedFace()
+    const bare: SettingsNamespaceView = {
+      ns: 'llm-deepseek',
+      schema: JSON.parse(JSON.stringify(DeepSeekConfig.toJSON())) as unknown,
+      value: {},
+      applies: 'live',
+      secrets: [],
+      revision: 0,
+    }
+    const { ProviderEditor } = await import('../src/client/ProviderEditor.tsx')
+    render(<ProviderEditor
+      provider="deepseek-official"
+      displayName="DeepSeek"
+      namespace={bare}
+      settingsPath={[]}
+      api={face as never}
+      t={t}
+      readOnly={false}
+      onClose={() => {}}
+    />)
+    fireEvent.click(screen.getByText(en.customized))
+    const baseURL = screen.getByLabelText<HTMLInputElement>(en.baseUrl)
+    expect(baseURL.placeholder).toBe('https://api.deepseek.com')
+    fireEvent.change(baseURL, { target: { value: 'https://x' } })
+    expect(baseURL.value).toBe('https://x')
+    fireEvent.change(baseURL, { target: { value: '' } })
+    expect(baseURL.value).toBe('')
+  })
+
+  it('rejects an invalid draft before writing', async () => {
+    const { update } = await mountSection()
+    fireEvent.click(screen.getByText(en.customized))
+    fireEvent.change(screen.getByLabelText(en.baseUrl), { target: { value: 'not-a-url' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await screen.findByText(/baseURL/)
+    expect(update).not.toHaveBeenCalled()
+  })
+
+  it('edits a pi-ai profile with the curated fields only', async () => {
+    const { mutate } = await mountSection()
+    fireEvent.click(screen.getAllByText(en.edit)[0] as HTMLElement)
+    // The configured credential shows as the stored placeholder.
+    const keys = await screen.findAllByLabelText<HTMLInputElement>(en.keyInput)
+    const editorKey = keys[keys.length - 1] as HTMLInputElement
+    await waitFor(() => { expect(editorKey.placeholder).toBe(en.keyStored) })
+    // pi-ai carries Base URL too: the stored override shows as the value and
+    // the effective profile endpoint as its placeholder source.
+    fireEvent.click(screen.getAllByText(en.customized)[1] as HTMLElement)
+    const urls = screen.getAllByLabelText<HTMLInputElement>(en.baseUrl)
+    expect(urls).toHaveLength(2)
+    expect((urls[1] as HTMLInputElement).value).toBe('https://proxy')
+    const effort = screen.getAllByLabelText<HTMLSelectElement>(en.effort)
+    fireEvent.change(effort[effort.length - 1] as HTMLSelectElement, { target: { value: 'xhigh' } })
+    fireEvent.click(screen.getAllByText(en.apply)[1] as HTMLElement)
+    await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
+    // Only the edited field travels: apiKeyEnv, baseURL and headers were
+    // already stored with these values, so no op restates them — and the
+    // profile's stored literal apiKey, absent from the redacted view the card
+    // read, is named by nothing at all.
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-pi-ai',
+      ops: [{ op: 'set', path: ['providers', 'openai', 'reasoning'], value: 'xhigh' }],
+      expectedRevision: 0,
+    })
+  })
+
+  it('adds a dormant provider with a derived reference and stores its key', async () => {
+    const { mutate, set } = await mountSection()
+    fireEvent.click(screen.getByText(`+ ${en.add}`))
+    const pick = await screen.findByLabelText<HTMLSelectElement>(en.provider)
+    expect([...pick.options].map(option => option.value)).toEqual(['anthropic', 'broken', 'plain'])
+    expect(pick.value).toBe('anthropic')
+    // A dormant profile has no endpoint anywhere: the pi-ai placeholder
+    // falls back to the provider-default wording.
+    fireEvent.click(screen.getAllByText(en.customized)[1] as HTMLElement)
+    const urls = screen.getAllByLabelText<HTMLInputElement>(en.baseUrl)
+    expect((urls[1] as HTMLInputElement).placeholder).toBe(en.baseUrlDefault)
+    const keys = screen.getAllByLabelText<HTMLInputElement>(en.keyInput)
+    const addKey = keys[keys.length - 1] as HTMLInputElement
+    fireEvent.change(addKey, { target: { value: 'sk-ant' } })
+    fireEvent.click(screen.getAllByText(en.apply)[1] as HTMLElement)
+    await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-pi-ai',
+      ops: [{ op: 'set', path: ['providers', 'anthropic', 'apiKeyEnv'], value: 'ANTHROPIC_API_KEY' }],
+      expectedRevision: 0,
+    })
+    await waitFor(() => { expect(set).toHaveBeenCalledWith({ ref: 'ANTHROPIC_API_KEY', value: 'sk-ant' }) })
+  })
+
+  it('switches the add card target and degrades unknown or broken targets loudly', async () => {
+    await mountSection()
+    fireEvent.click(screen.getByText(`+ ${en.add}`))
+    const pick = await screen.findByLabelText<HTMLSelectElement>(en.provider)
+    fireEvent.change(pick, { target: { value: 'broken' } })
+    await screen.findByText(/unresolvable settings path/)
+    fireEvent.change(pick, { target: { value: 'plain' } })
+    await waitFor(() => {
+      expect(screen.getAllByText(content => content.includes(en.advancedHint)).length).toBeGreaterThan(0)
+    })
+    // The hint-only card cannot apply anything.
+    const applies = screen.getAllByText<HTMLButtonElement>(en.apply)
+    expect((applies[applies.length - 1] as HTMLButtonElement).disabled).toBe(true)
+    expect(screen.getAllByLabelText(en.keyInput)).toHaveLength(1)
+  })
+
+  it('surfaces a rejected settings write and never stores the key after it', async () => {
+    const { set } = await mountSection({
+      mutate: vi.fn(() => Promise.resolve(fail('llm-pi-ai: unknown pi-ai provider "bogus"'))),
+    })
+    fireEvent.click(screen.getByText(`+ ${en.add}`))
+    await screen.findByLabelText(en.provider)
+    const keys = screen.getAllByLabelText<HTMLInputElement>(en.keyInput)
+    fireEvent.change(keys[keys.length - 1] as HTMLInputElement, { target: { value: 'sk-x' } })
+    fireEvent.click(screen.getAllByText(en.apply)[1] as HTMLElement)
+    await screen.findByText(/unknown pi-ai provider/)
+    expect(set).not.toHaveBeenCalled()
+  })
+
+  it('renders the card without the stored-key hint when the credential probe rejects', async () => {
+    // The probe is a placeholder hint, not a precondition: an escaping
+    // rejection would surface in the browser as an unhandled rejection.
+    const { face } = scriptedFace()
+    face.credentials.describe = vi.fn(() => Promise.reject(new Error('connection lost')))
+    const unhandled = vi.fn()
+    process.on('unhandledRejection', unhandled)
+    try {
+      const controller = new ModelsSettingsStore(face as unknown as WireFace)
+      await controller.load()
+      render(<ModelsSection
+        controller={controller}
+        useSnapshot={bindSnapshotSelector(controller.store)}
+        api={face as never}
+        t={t}
+      />)
+      const key = await screen.findByLabelText<HTMLInputElement>(en.keyInput)
+      expect(key.placeholder).toBe(en.keyPlaceholder)
+      await new Promise(resolve => setTimeout(resolve, 10))
+      expect(unhandled).not.toHaveBeenCalled()
+    } finally {
+      process.off('unhandledRejection', unhandled)
+    }
+  })
+
+  it('tells the user to reopen when another writer moved the namespace first', async () => {
+    // The stale-draft overwrite: two tabs open the same card, the other saves,
+    // and this one must be refused rather than replay its opening snapshot.
+    const { set } = await mountSection({
+      mutate: vi.fn(() => Promise.resolve(fail('changed since it was read', 'settings-conflict'))),
+    })
+    fireEvent.click(screen.getByText(en.customized))
+    fireEvent.change(screen.getByLabelText<HTMLInputElement>(en.baseUrl), { target: { value: 'https://mine' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await screen.findByText(en.conflict)
+    expect(set).not.toHaveBeenCalled()
+  })
+
+  it('keeps the card usable when the write rejects instead of answering', async () => {
+    // A transport failure (disconnect, or the 403 a non-loopback browser now
+    // gets on the whole configuration plane) rejects rather than returning a
+    // failed envelope: without a catch the card would stay busy forever.
+    await mountSection({ mutate: vi.fn(() => Promise.reject(new Error('connection lost'))) })
+    fireEvent.click(screen.getByText(en.customized))
+    fireEvent.change(screen.getByLabelText<HTMLInputElement>(en.baseUrl), { target: { value: 'https://next' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await screen.findByText('connection lost')
+    // Not stuck in `applying…`: the finally cleared busy, so Apply is live again.
+    expect(screen.getByText(en.apply)).toBeTruthy()
+  })
+
+  it('surfaces a shadowed credential write on the card', async () => {
+    await mountSection({
+      set: vi.fn(() => Promise.resolve(fail('credentials: DEEPSEEK_API_KEY is shadowed by the read-only environment', 'credential-rejected'))),
+    })
+    const key = screen.getByLabelText<HTMLInputElement>(en.keyInput)
+    fireEvent.change(key, { target: { value: 'sk-live' } })
+    fireEvent.click(screen.getByText(en.apply))
+    await screen.findByText(/shadowed by the read-only environment/)
+  })
+
+  it('locks the key input when the launch environment provides the credential', async () => {
+    const { face } = await mountSection()
+    face.credentials.describe.mockImplementation((payload: { refs: string[] }) => Promise.resolve(ok({
+      credentials: Object.fromEntries(payload.refs.map(ref => [ref, {
+        configured: ref === 'OPENAI_API_KEY', source: 'env', writable: false,
+      }])),
+    })))
+    fireEvent.click(screen.getAllByText(en.edit)[0] as HTMLElement)
+    const keys = await screen.findAllByLabelText<HTMLInputElement>(en.keyInput)
+    const editorKey = keys[keys.length - 1] as HTMLInputElement
+    await waitFor(() => { expect(editorKey.placeholder).toBe(en.keyEnvLocked) })
+    expect(editorKey.disabled).toBe(true)
+  })
+
+  it('keeps a failed credential describe silent and the input usable', async () => {
+    const { face, set } = await mountSection()
+    face.credentials.describe.mockImplementation(() => Promise.resolve(fail('down', 'internal')) as never)
+    fireEvent.click(screen.getAllByText(en.edit)[0] as HTMLElement)
+    const keys = await screen.findAllByLabelText<HTMLInputElement>(en.keyInput)
+    const editorKey = keys[keys.length - 1] as HTMLInputElement
+    expect(editorKey.placeholder).toBe(en.keyPlaceholder)
+    fireEvent.change(editorKey, { target: { value: 'sk-live' } })
+    fireEvent.click(screen.getAllByText(en.apply)[1] as HTMLElement)
+    await waitFor(() => { expect(set).toHaveBeenCalledTimes(1) })
+  })
+
+  it('removes a user-added provider by unsetting its path', async () => {
+    const { replace, mutate } = await mountSection()
+    fireEvent.click(screen.getAllByText(en.remove)[0] as HTMLElement)
+    await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
+    expect(replace).not.toHaveBeenCalled()
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-pi-ai',
+      ops: [{ op: 'unset', path: ['providers', 'openai'] }],
+    })
+  })
+
+  it('renders the load failure with a retry control', async () => {
+    const face = scriptedFace()
+    face.face.llm.providers = vi.fn(() => Promise.resolve(fail('directory down', 'internal'))) as never
+    const controller = new ModelsSettingsStore(face.face as unknown as WireFace)
+    await controller.load()
+    render(<ModelsSection
+      controller={controller}
+      useSnapshot={bindSnapshotSelector(controller.store)}
+      api={face.face as never}
+      t={t}
+    />)
+    expect(screen.getByText(/directory down/)).toBeTruthy()
+    fireEvent.click(screen.getByText(en.retry))
+    await waitFor(() => { expect(screen.queryByText(/directory down/)).toBeNull() })
+  })
+
+  it('shows the read-only notice and disables mutations for a read-only provider', async () => {
+    const { face } = await mountSection()
+    face.settings.describe.mockImplementation(() => Promise.resolve(ok({
+      writable: false,
+      namespaces: wireNamespaces(),
+    })))
+    const controller = new ModelsSettingsStore(face as unknown as WireFace)
+    await controller.load()
+    cleanup()
+    render(<ModelsSection
+      controller={controller}
+      useSnapshot={bindSnapshotSelector(controller.store)}
+      api={face as never}
+      t={t}
+    />)
+    expect(screen.getByText(en.readOnly)).toBeTruthy()
+    expect(screen.getAllByText<HTMLButtonElement>(en.remove).every(button => button.disabled)).toBe(true)
+    expect(screen.getByText<HTMLButtonElement>(`+ ${en.add}`).disabled).toBe(true)
+  })
+
+  it('toggles the row editor closed on a second edit click and on cancel', async () => {
+    const { update } = await mountSection()
+    const edit = screen.getAllByText(en.edit)[0] as HTMLElement
+    fireEvent.click(edit)
+    await waitFor(() => { expect(screen.getAllByLabelText(en.keyInput).length).toBe(2) })
+    fireEvent.click(edit)
+    expect(screen.getAllByLabelText(en.keyInput)).toHaveLength(1)
+    fireEvent.click(edit)
+    await waitFor(() => { expect(screen.getAllByLabelText(en.keyInput).length).toBe(2) })
+    fireEvent.click(screen.getAllByText(en.cancel)[1] as HTMLElement)
+    expect(screen.getAllByLabelText(en.keyInput)).toHaveLength(1)
+    expect(update).not.toHaveBeenCalled()
+  })
+
+  it('cancels the add card back to the add button', async () => {
+    await mountSection()
+    fireEvent.click(screen.getByText(`+ ${en.add}`))
+    await screen.findByLabelText(en.provider)
+    fireEvent.click(screen.getAllByText(en.cancel)[1] as HTMLElement)
+    await screen.findByText(`+ ${en.add}`)
+    expect(screen.queryByLabelText(en.provider)).toBeNull()
+  })
+
+  it('loads on first render of an idle controller', async () => {
+    const { face } = scriptedFace()
+    const controller = new ModelsSettingsStore(face as unknown as WireFace)
+    render(<ModelsSection
+      controller={controller}
+      useSnapshot={bindSnapshotSelector(controller.store)}
+      api={face as never}
+      t={t}
+    />)
+    await screen.findByText('DeepSeek')
+  })
+
+  it('removes by unsetting the profile path, never by rebuilding the section', async () => {
+    // The section rebuild is what dropped stored literal secrets: this page
+    // only ever holds the redacted descriptor, so the removal names the path.
+    const { face, mutate, replace, controller } = await mountSection()
+    await removeProviderProfile(
+      face as unknown as Parameters<typeof removeProviderProfile>[0],
+      controller,
+      { settingsNs: 'llm-plain', settingsPath: ['ghost-profile'] },
+    )
+    expect(mutate.mock.calls[0]?.[0]).toEqual({
+      ns: 'llm-plain',
+      ops: [{ op: 'unset', path: ['ghost-profile'] }],
+    })
+    expect(replace).not.toHaveBeenCalled()
+  })
+
+  it('keeps the snapshot untouched and reports the message when a removal write is refused', async () => {
+    const { face, controller } = await mountSection({
+      mutate: vi.fn(() => Promise.resolve(fail('read-only'))),
+    })
+    const before = controller.store.getSnapshot().rows
+    const failure = await removeProviderProfile(
+      face as unknown as Parameters<typeof removeProviderProfile>[0],
+      controller,
+      { settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'] },
+    )
+    expect(failure).toBe('read-only')
+    expect(controller.store.getSnapshot().rows).toBe(before)
+  })
+
+  it('shows a failed removal on the page banner, including a non-Error rejection', async () => {
+    // The whole click path: the row's Remove button, the transport rejecting
+    // with a non-Error value, and the store surfacing it where a load failure
+    // would appear — rather than the row silently staying put.
+    await mountSection({ mutate: vi.fn(() => Promise.reject(new Error('the host refused'))) })
+    fireEvent.click(screen.getAllByText(en.remove)[0] as HTMLElement)
+    await screen.findByText(`${en.loadFailed}: the host refused`)
+  })
+
+  it('reports a transport rejection instead of failing the removal silently', async () => {
+    const { face, controller } = await mountSection({
+      mutate: vi.fn(() => Promise.reject(new Error('connection lost'))),
+    })
+    const failure = await removeProviderProfile(
+      face as unknown as Parameters<typeof removeProviderProfile>[0],
+      controller,
+      { settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'] },
+    )
+    expect(failure).toBe('connection lost')
+  })
+})
diff --git a/packages/client/ui-models/tests/invariant.spec.ts b/packages/client/ui-models/tests/invariant.spec.ts
index 05fb52ee1b..8f9622b599 100644
--- a/packages/client/ui-models/tests/invariant.spec.ts
+++ b/packages/client/ui-models/tests/invariant.spec.ts
@@ -17,7 +17,7 @@ describe('invariant companion', () => {
     expect(true).toBe(true) // reaching here without throw is the contract
   })
 
-  it('the section content column is intentionally empty this phase', () => {
-    expect(ModelsSection()).toBeNull()
+  it('renders null until the shell injects the section dependencies', () => {
+    expect(ModelsSection({})).toBeNull()
   })
 })
diff --git a/packages/client/ui-models/tests/onboarding-dialog.spec.tsx b/packages/client/ui-models/tests/onboarding-dialog.spec.tsx
new file mode 100644
index 0000000000..1d757d340a
--- /dev/null
+++ b/packages/client/ui-models/tests/onboarding-dialog.spec.tsx
@@ -0,0 +1,186 @@
+// @vitest-environment jsdom
+/** First-run DeepSeek prompt behavior over the shared Models join. */
+import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { RpcResponse } from '@deepseek-ai/dsh-client-connection/client'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
+import { DeepSeekOnboardingDialog } from '../src/client/DeepSeekOnboardingDialog.tsx'
+import type { DeepSeekOnboardingDialogProps } from '../src/client/DeepSeekOnboardingDialog.tsx'
+import { ModelsSettingsStore } from '../src/client/store.ts'
+import { en } from '../src/client/locales.ts'
+
+afterEach(cleanup)
+
+let nextRpc = 0
+function ok<T>(value: T): RpcResponse<T> {
+  return { rpcId: `onboarding-${nextRpc++}` as never, result: { ok: true, value } }
+}
+function fail<T>(message: string): RpcResponse<T> {
+  return {
+    rpcId: `onboarding-${nextRpc++}` as never,
+    result: { ok: false, error: { code: 'internal', message, details: {} } },
+  }
+}
+
+function harness(options: {
+  provider?: boolean
+  providerActive?: boolean
+  providerSettingsNs?: string
+  settingsNamespace?: boolean
+  apiKeyEnv?: string | null
+  literal?: boolean
+  configured?: () => boolean
+  credential?: { source?: string; writable: boolean }
+  describeFailure?: string
+  settingsWritable?: boolean
+  providersReject?: boolean
+} = {}) {
+  let fileConfigured = false
+  const configured = options.configured ?? (() => fileConfigured)
+  const face = {
+    llm: {
+      providers: () => {
+        if (options.providersReject === true) {
+          return Promise.reject(new Error('provider transport unavailable'))
+        }
+        return Promise.resolve(ok({
+          providers: options.provider === false
+            ? []
+            : [{
+              provider: 'deepseek-official',
+              displayName: 'DeepSeek',
+              settingsNs: options.providerSettingsNs ?? 'llm-deepseek',
+              settingsPath: [],
+              active: options.providerActive ?? true,
+            }],
+        }))
+      },
+    },
+    settings: {
+      describe: () => Promise.resolve(ok({
+        writable: options.settingsWritable ?? true,
+        namespaces: options.settingsNamespace === false
+          ? []
+          : [{
+            ns: 'llm-deepseek',
+            schema: {},
+            value: options.apiKeyEnv === null
+              ? {}
+              : { apiKeyEnv: options.apiKeyEnv ?? 'DEEPSEEK_API_KEY' },
+            applies: 'live' as const,
+            secrets: [{ path: ['apiKey'], set: options.literal === true }],
+            revision: 0,
+          }],
+      })),
+    },
+    credentials: {
+      describe: () => options.describeFailure === undefined
+        ? Promise.resolve(ok({
+          credentials: {
+            DEEPSEEK_API_KEY: {
+              configured: configured(),
+              ...configured() && options.credential?.source !== undefined
+                ? { source: options.credential.source }
+                : {},
+              writable: options.credential?.writable ?? true,
+            },
+          },
+        }))
+        : Promise.resolve(fail(options.describeFailure)),
+    },
+  }
+  const controller = new ModelsSettingsStore(face as never)
+  const openSection = vi.fn()
+  const unusedHook = (() => { throw new Error('unused standard hook') }) as never
+  const props: DeepSeekOnboardingDialogProps = {
+    active: true,
+    openSection,
+    useSessions: unusedHook,
+    useWorkspaces: unusedHook,
+    controller,
+    useSnapshot: bindSnapshotSelector(controller.store),
+    t: key => en[key],
+  }
+  return { controller, openSection, props, configure: () => { fileConfigured = true } }
+}
+
+describe('DeepSeekOnboardingDialog', () => {
+  it('loads on first entry and presents one accessible route to Models', async () => {
+    const h = harness()
+    render(<DeepSeekOnboardingDialog {...h.props} />)
+    expect(await screen.findByRole('dialog', { name: en.onboardingTitle })).toBeTruthy()
+    expect(screen.getByText(en.onboardingDescription)).toBeTruthy()
+    const action = screen.getByRole('button', { name: en.onboardingGoToSettings })
+    expect(action).toBeTruthy()
+    expect(document.activeElement).toBe(action)
+    expect(screen.queryByRole('textbox')).toBeNull()
+  })
+
+  it('opens the Models section and dismisses the prompt', async () => {
+    const h = harness()
+    render(<DeepSeekOnboardingDialog {...h.props} />)
+    await screen.findByRole('dialog')
+    fireEvent.click(screen.getByRole('button', { name: en.onboardingGoToSettings }))
+    expect(h.openSection).toHaveBeenCalledWith('models')
+    expect(screen.queryByRole('dialog', { name: en.onboardingTitle })).toBeNull()
+  })
+
+  it('allows configure-later dismissal without opening settings', async () => {
+    const h = harness()
+    render(<DeepSeekOnboardingDialog {...h.props} />)
+    await screen.findByRole('dialog')
+    fireEvent.click(screen.getByRole('button', { name: en.onboardingLater }))
+    expect(screen.queryByRole('dialog')).toBeNull()
+    expect(h.openSection).not.toHaveBeenCalled()
+  })
+
+  it('does not block the product when DeepSeek setup is unavailable', async () => {
+    for (const h of [
+      harness({ describeFailure: 'credentials service is absent' }),
+      harness({ credential: { writable: false } }),
+      harness({ settingsWritable: false }),
+      harness({ providersReject: true }),
+      harness({ providerActive: false }),
+      harness({ settingsNamespace: false }),
+      harness({ apiKeyEnv: null }),
+    ]) {
+      const view = render(<DeepSeekOnboardingDialog {...h.props} />)
+      await act(async () => { await h.controller.load() })
+      expect(screen.queryByRole('dialog')).toBeNull()
+      expect(h.openSection).not.toHaveBeenCalled()
+      view.unmount()
+    }
+  })
+
+  it('skips an absent adapter and already-configured literal or environment credentials', async () => {
+    for (const h of [
+      harness({ provider: false }),
+      harness({ providerSettingsNs: '' }),
+      harness({ literal: true, describeFailure: 'credential seam absent' }),
+      harness({ configured: () => true, credential: { source: 'env', writable: false } }),
+    ]) {
+      const view = render(<DeepSeekOnboardingDialog {...h.props} />)
+      await act(async () => { await h.controller.load() })
+      expect(screen.queryByRole('dialog')).toBeNull()
+      view.unmount()
+    }
+  })
+
+  it('closes when an external credential invalidation refreshes the shared join', async () => {
+    const h = harness()
+    render(<DeepSeekOnboardingDialog {...h.props} />)
+    await screen.findByRole('dialog')
+    h.configure()
+    await act(async () => { await h.controller.load() })
+    await waitFor(() => { expect(screen.queryByRole('dialog')).toBeNull() })
+  })
+
+  it('stays hidden while the onboarding owner is inactive', async () => {
+    const h = harness()
+    const view = render(<DeepSeekOnboardingDialog {...h.props} active={false} />)
+    await act(async () => { await h.controller.load() })
+    expect(screen.queryByRole('dialog')).toBeNull()
+    view.rerender(<DeepSeekOnboardingDialog {...h.props} active />)
+    expect(await screen.findByRole('dialog', { name: en.onboardingTitle })).toBeTruthy()
+  })
+})
diff --git a/packages/client/ui-models/tests/readiness.spec.ts b/packages/client/ui-models/tests/readiness.spec.ts
new file mode 100644
index 0000000000..d03cd130f4
--- /dev/null
+++ b/packages/client/ui-models/tests/readiness.spec.ts
@@ -0,0 +1,105 @@
+/** Pure official-DeepSeek readiness projection over the shared Models join. */
+import { describe, expect, it } from 'vitest'
+import type { CredentialView } from '@deepseek-ai/dsh-client-connection/client'
+import type { ModelsSettingsState, ProviderRow } from '../src/client/store.ts'
+import { deepSeekReadiness } from '../src/client/store.ts'
+
+const missingCredential: CredentialView = { configured: false, writable: true }
+
+function row(overrides: Partial<ProviderRow> = {}): ProviderRow {
+  return {
+    entry: {
+      provider: 'deepseek-official',
+      displayName: 'DeepSeek',
+      settingsNs: 'llm-deepseek',
+      settingsPath: [],
+      active: true,
+    },
+    configured: true,
+    removable: false,
+    apiKeyEnv: 'DEEPSEEK_API_KEY',
+    credential: missingCredential,
+    literalApiKeyConfigured: false,
+    ...overrides,
+  }
+}
+
+function state(overrides: Partial<ModelsSettingsState> = {}): ModelsSettingsState {
+  return {
+    status: 'ready',
+    error: null,
+    credentialError: null,
+    writable: true,
+    rows: [row()],
+    namespaces: new Map(),
+    ...overrides,
+  }
+}
+
+describe('deepSeekReadiness', () => {
+  it('waits for the first join and skips onboarding when the adapter directory entry is absent', () => {
+    expect(deepSeekReadiness(state({ status: 'idle', rows: [] }))).toEqual({ kind: 'loading' })
+    expect(deepSeekReadiness(state({ status: 'loading', rows: [] }))).toEqual({ kind: 'loading' })
+    expect(deepSeekReadiness(state({ rows: [] }))).toEqual({ kind: 'adapter-absent' })
+    expect(deepSeekReadiness(state({
+      rows: [row({
+        entry: {
+          ...row().entry,
+          settingsNs: '',
+        },
+      })],
+    }))).toEqual({ kind: 'adapter-absent' })
+  })
+
+  it('reports a missing writable effective credential', () => {
+    expect(deepSeekReadiness(state())).toEqual({ kind: 'credential-missing' })
+  })
+
+  it('accepts file and process-environment credentials without prompting', () => {
+    expect(deepSeekReadiness(state({
+      rows: [row({ credential: { configured: true, source: 'file', writable: true } })],
+    }))).toEqual({ kind: 'configured' })
+    expect(deepSeekReadiness(state({
+      rows: [row({ credential: { configured: true, source: 'env', writable: false } })],
+    }))).toEqual({ kind: 'configured' })
+  })
+
+  it('accepts the redacted literal-key sidecar before judging the credential domain', () => {
+    expect(deepSeekReadiness(state({
+      credentialError: 'credentials service absent',
+      rows: [row({ literalApiKeyConfigured: true, credential: undefined })],
+    }))).toEqual({ kind: 'configured' })
+  })
+
+  it('turns missing capabilities and inconsistent descriptors into diagnostics', () => {
+    expect(deepSeekReadiness(state({ status: 'error', error: 'settings down' }))).toEqual({
+      kind: 'unavailable',
+      reason: 'load-failed',
+    })
+    expect(deepSeekReadiness(state({
+      rows: [row({ entry: { ...row().entry, active: false } })],
+    }))).toEqual({ kind: 'unavailable', reason: 'provider-inactive' })
+    expect(deepSeekReadiness(state({
+      rows: [row({ configured: false })],
+    }))).toEqual({ kind: 'unavailable', reason: 'settings-unavailable' })
+    expect(deepSeekReadiness(state({
+      rows: [row({ apiKeyEnv: undefined })],
+    }))).toEqual({ kind: 'unavailable', reason: 'credential-ref-unavailable' })
+    expect(deepSeekReadiness(state({
+      credentialError: 'credentials service is absent',
+    }))).toEqual({
+      kind: 'unavailable',
+      reason: 'credentials-unavailable',
+    })
+    expect(deepSeekReadiness(state({
+      rows: [row({ credential: undefined })],
+    }))).toEqual({ kind: 'unavailable', reason: 'credentials-unavailable' })
+    expect(deepSeekReadiness(state({
+      rows: [row({ credential: { configured: false, writable: false } })],
+    }))).toEqual({ kind: 'unavailable', reason: 'credential-read-only' })
+    expect(deepSeekReadiness(state({ writable: false }))).toEqual({
+      kind: 'unavailable',
+      reason: 'settings-read-only',
+    })
+  })
+})
diff --git a/packages/client/ui-models/tests/store.spec.ts b/packages/client/ui-models/tests/store.spec.ts
new file mode 100644
index 0000000000..ca7d703c93
--- /dev/null
+++ b/packages/client/ui-models/tests/store.spec.ts
@@ -0,0 +1,287 @@
+/** Page-store join: directory × namespaces × credentials, with last-good rows on failure. */
+import { describe, expect, it } from 'vitest'
+import type { RpcResponse } from '@deepseek-ai/dsh-client-connection/client'
+import { messageOf, ModelsSettingsStore } from '../src/client/store.ts'
+
+let nextRpc = 0
+function ok<T>(value: T): RpcResponse<T> {
+  return { rpcId: `r-${nextRpc++}` as never, result: { ok: true, value } }
+}
+function fail<T>(message: string): RpcResponse<T> {
+  return { rpcId: `r-${nextRpc++}` as never, result: { ok: false, error: { code: 'internal', message, details: {} } } }
+}
+
+const DIRECTORY = [
+  { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [], active: true },
+  { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: true },
+  { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false },
+  { provider: 'ghost', displayName: 'Ghost', settingsNs: '', settingsPath: [], active: true },
+]
+
+const NAMESPACES = [
+  {
+    ns: 'llm-deepseek',
+    schema: {},
+    value: { apiKeyEnv: 'DEEPSEEK_API_KEY', baseURL: 'https://base' },
+    base: { baseURL: 'https://base' },
+    applies: 'live' as const,
+    secrets: [{ path: ['apiKey'], set: false }],
+    revision: 0,
+  },
+  {
+    ns: 'llm-pi-ai',
+    schema: {},
+    value: { providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY' } } },
+    user: { providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY' } } },
+    applies: 'live' as const,
+    secrets: [],
+    revision: 0,
+  },
+]
+
+function api(overrides: {
+  providers?: () => Promise<RpcResponse<{ providers: typeof DIRECTORY }>>
+  describeSettings?: () => Promise<RpcResponse<{ writable: boolean; namespaces: typeof NAMESPACES }>>
+  describeCredentials?: (refs: string[]) => Promise<RpcResponse<{ credentials: Record<string, unknown> }>>
+} = {}) {
+  const seenRefs: string[][] = []
+  const face = {
+    llm: {
+      providers: overrides.providers ?? (() => Promise.resolve(ok({ providers: DIRECTORY }))),
+      models: () => Promise.resolve(ok({ groups: [], failures: [] })),
+    },
+    settings: {
+      describe: overrides.describeSettings ?? (() => Promise.resolve(ok({ writable: true, namespaces: NAMESPACES }))),
+      update: () => Promise.resolve(fail('unused')),
+      replace: () => Promise.resolve(fail('unused')),
+    },
+    credentials: {
+      describe: (payload: { refs: string[] }) => {
+        seenRefs.push(payload.refs)
+        return (overrides.describeCredentials ?? (refs => Promise.resolve(ok({
+          credentials: Object.fromEntries(refs.map(ref => [ref, { configured: ref === 'OPENAI_API_KEY', writable: true }])),
+        }))))(payload.refs)
+      },
+      set: () => Promise.resolve(ok({})),
+      unset: () => Promise.resolve(ok({})),
+    },
+  }
+  return { face: face as never, seenRefs }
+}
+
+describe('ModelsSettingsStore', () => {
+  it('joins rows with configured, removable, and credential state', async () => {
+    const { face, seenRefs } = api()
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    const state = store.store.getSnapshot()
+    expect(state.status).toBe('ready')
+    expect(state.writable).toBe(true)
+    expect(state.credentialError).toBeNull()
+    expect(seenRefs).toEqual([['DEEPSEEK_API_KEY', 'OPENAI_API_KEY']])
+    const byProvider = new Map(state.rows.map(row => [row.entry.provider, row]))
+    expect(byProvider.get('deepseek-official')).toMatchObject({
+      configured: true,
+      removable: false,
+      apiKeyEnv: 'DEEPSEEK_API_KEY',
+      credential: { configured: false, writable: true },
+      literalApiKeyConfigured: false,
+    })
+    expect(byProvider.get('openai')).toMatchObject({
+      configured: true,
+      removable: true,
+      apiKeyEnv: 'OPENAI_API_KEY',
+      credential: { configured: true },
+    })
+    expect(byProvider.get('anthropic')).toMatchObject({ configured: false, removable: false })
+    expect(byProvider.get('anthropic')?.apiKeyEnv).toBeUndefined()
+    expect(byProvider.get('ghost')).toMatchObject({ configured: false, removable: false })
+    expect(state.namespaces.get('llm-pi-ai')?.ns).toBe('llm-pi-ai')
+  })
+
+  it('degrades the credential badge, not the page, when the credential domain fails', async () => {
+    const { face } = api({ describeCredentials: () => Promise.resolve(fail('no provider')) })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    const state = store.store.getSnapshot()
+    expect(state.status).toBe('ready')
+    expect(state.credentialError).toBe('no provider')
+    expect(state.rows.every(row => row.credential === undefined)).toBe(true)
+  })
+
+  it('settles a credential transport rejection without leaving the store loading', async () => {
+    const { face } = api({
+      describeCredentials: () => Promise.reject(new Error('credential transport down')),
+    })
+    const store = new ModelsSettingsStore(face)
+    await expect(store.load()).resolves.toBeUndefined()
+    expect(store.store.getSnapshot()).toMatchObject({
+      status: 'ready',
+      credentialError: 'credential transport down',
+    })
+  })
+
+  it('stringifies a non-Error credential transport rejection', async () => {
+    const { face } = api({
+      // oxlint-disable-next-line typescript/prefer-promise-reject-errors -- the non-Error rejection is the scenario
+      describeCredentials: () => Promise.reject('credential transport refusal'),
+    })
+    const store = new ModelsSettingsStore(face)
+    await expect(store.load()).resolves.toBeUndefined()
+    expect(store.store.getSnapshot().credentialError).toBe('credential transport refusal')
+  })
+
+  it('joins a configured literal key from the redacted secret sidecar', async () => {
+    const { face } = api({
+      describeSettings: () => Promise.resolve(ok({
+        writable: true,
+        namespaces: [{
+          ...NAMESPACES[0],
+          secrets: [
+            { path: ['apiKey', 'nested'], set: true },
+            { path: ['different'], set: true },
+            { path: ['apiKey'], set: true },
+          ],
+        }] as never,
+      })),
+      providers: () => Promise.resolve(ok({ providers: [DIRECTORY[0]] as never })),
+    })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    expect(store.store.getSnapshot().rows[0]).toMatchObject({
+      literalApiKeyConfigured: true,
+      apiKeyEnv: 'DEEPSEEK_API_KEY',
+    })
+  })
+
+  it('surfaces a directory failure and keeps the last good rows', async () => {
+    const { face } = api()
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    expect(store.store.getSnapshot().rows).toHaveLength(4)
+    const broken = api({ providers: () => Promise.resolve(fail('directory down')) })
+    const failing = new ModelsSettingsStore(broken.face)
+    await failing.load()
+    expect(failing.store.getSnapshot()).toMatchObject({ status: 'error', error: 'directory down' })
+    // The first store's snapshot is untouched by the second's failure.
+    expect(store.store.getSnapshot().status).toBe('ready')
+  })
+
+  it('lets the newest load win over a stale slow response', async () => {
+    let release: (() => void) | undefined
+    const gate = new Promise<void>((resolve) => { release = resolve })
+    let call = 0
+    const { face } = api({
+      providers: async () => {
+        call += 1
+        if (call === 1) {
+          await gate
+          return fail('stale slow failure')
+        }
+        return ok({ providers: DIRECTORY })
+      },
+    })
+    const store = new ModelsSettingsStore(face)
+    const first = store.load()
+    const second = store.load()
+    release?.()
+    await Promise.all([first, second])
+    expect(store.store.getSnapshot().status).toBe('ready')
+  })
+})
+
+describe('edge joins', () => {
+  it('treats a non-object profile as having no credential reference', async () => {
+    const { face } = api({
+      describeSettings: () => Promise.resolve(ok({
+        writable: true,
+        namespaces: [{
+          ns: 'llm-pi-ai',
+          schema: {},
+          value: { providers: { weird: 'oops' } },
+          applies: 'live' as const,
+          secrets: [],
+          revision: 0,
+        }] as never,
+      })),
+      providers: () => Promise.resolve(ok({
+        providers: [
+          { provider: 'weird', displayName: 'weird', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'weird'], active: false },
+        ] as never,
+      })),
+    })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    const state = store.store.getSnapshot()
+    expect(state.rows[0]).toMatchObject({ configured: true, removable: false })
+    expect(state.rows[0]?.apiKeyEnv).toBeUndefined()
+  })
+
+  it('skips the credential describe entirely when no row names a reference', async () => {
+    const { face, seenRefs } = api({
+      describeSettings: () => Promise.resolve(ok({
+        writable: true,
+        namespaces: [{ ns: 'llm-pi-ai', schema: {}, value: { providers: {} }, applies: 'live' as const, secrets: [], revision: 0 }] as never,
+      })),
+      providers: () => Promise.resolve(ok({
+        providers: [
+          { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false },
+        ] as never,
+      })),
+    })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    expect(seenRefs).toEqual([])
+    expect(store.store.getSnapshot().status).toBe('ready')
+  })
+
+  it('surfaces a settings describe failure', async () => {
+    const { face } = api({ describeSettings: () => Promise.resolve(fail('settings down')) })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    expect(store.store.getSnapshot()).toMatchObject({ status: 'error', error: 'settings down' })
+  })
+
+  it('stringifies a non-Error load failure', async () => {
+    // The wire can surface non-Error throwables; the store must stringify them.
+    // oxlint-disable-next-line typescript/prefer-promise-reject-errors -- the non-Error rejection is the scenario
+    const { face } = api({ providers: () => Promise.reject('plain refusal') })
+    const store = new ModelsSettingsStore(face)
+    await store.load()
+    expect(store.store.getSnapshot()).toMatchObject({ status: 'error', error: 'plain refusal' })
+  })
+
+  it('drops a stale successful response after a newer load finished', async () => {
+    let release: (() => void) | undefined
+    const gate = new Promise<void>((resolve) => { release = resolve })
+    let call = 0
+    const { face } = api({
+      providers: async () => {
+        call += 1
+        if (call === 1) {
+          await gate
+          return ok({ providers: [] as never })
+        }
+        return ok({ providers: DIRECTORY })
+      },
+    })
+    const store = new ModelsSettingsStore(face)
+    const first = store.load()
+    const second = store.load()
+    await second
+    release?.()
+    await first
+    // The stale empty directory never overwrote the newer join.
+    expect(store.store.getSnapshot().rows).toHaveLength(4)
+  })
+})
+
+describe('messageOf', () => {
+  it('reads an Error message, and stringifies anything else a rejection may carry', () => {
+    // The wire layer rejects with an Error, but a host or a runtime can reject
+    // with any value, and the page still has to render something.
+    expect(messageOf(new Error('connection lost'))).toBe('connection lost')
+    expect(messageOf('the host refused')).toBe('the host refused')
+    expect(messageOf(undefined)).toBe('undefined')
+  })
+})
diff --git a/packages/client/ui-models/tsconfig.json b/packages/client/ui-models/tsconfig.json
index dde94c20af..79e61ffcba 100644
--- a/packages/client/ui-models/tsconfig.json
+++ b/packages/client/ui-models/tsconfig.json
@@ -17,6 +17,18 @@
     {
       "path": "../runtime"
     },
+    {
+      "path": "../connection"
+    },
+    {
+      "path": "../schema-form"
+    },
+    {
+      "path": "../ui-primitives"
+    },
+    {
+      "path": "../web-react"
+    },
     {
       "path": "../ui-settings"
     },
diff --git a/packages/client/ui-primitives/src/BrandWordmark.tsx b/packages/client/ui-primitives/src/BrandWordmark.tsx
index aa45d046f0..768fcdf92c 100644
--- a/packages/client/ui-primitives/src/BrandWordmark.tsx
+++ b/packages/client/ui-primitives/src/BrandWordmark.tsx
@@ -1,5 +1,5 @@
 // DeepSeek Harness brand wordmark (figma 356:14644, exact extract): whale +
-// "deepseek" letterforms + HARNESS badge plate in one svg. Native 182x24.
+// "deepseek-official" letterforms + HARNESS badge plate in one svg. Native 182x24.
 // Ink rides currentColor; the badge text is knocked out in the inverted
 // label color so the plate stays legible in both themes.
 
diff --git a/packages/client/ui-primitives/src/Modal.tsx b/packages/client/ui-primitives/src/Modal.tsx
index ef790c8b6a..be58368d63 100644
--- a/packages/client/ui-primitives/src/Modal.tsx
+++ b/packages/client/ui-primitives/src/Modal.tsx
@@ -13,6 +13,7 @@ import css from './Modal.module.css'
  * @param props.open - whether the dialog is showing.
  * @param props.onClose - Escape or mask click.
  * @param props.title - dialog heading (aria-label in every mode).
+ * @param props.closeLabel - accessible close-button label.
  * @param props.description - optional supporting sentence under the title.
  * @param props.children - body (inputs, etc.).
  * @param props.footer - action row (Cancel / Create).
@@ -21,10 +22,13 @@ import css from './Modal.module.css'
  * header structure; mask, card, Escape, and aria-label remain.
  * @returns null when closed; otherwise the overlay tree.
  */
-export function Modal({ open, onClose, title, description, children, footer, className, headless = false }: {
+export function Modal({
+  open, onClose, title, closeLabel = 'Close', description, children, footer, className, headless = false,
+}: {
   open: boolean
   onClose: () => void
   title: string
+  closeLabel?: string
   description?: string
   children?: ReactNode
   footer?: ReactNode
@@ -58,7 +62,7 @@ export function Modal({ open, onClose, title, description, children, footer, cla
               <div className={css.content}>
                 <div className={css.header}>
                   <h2 className={css.title}>{title}</h2>
-                  <button type="button" className={css.close} aria-label="Close" onClick={onClose}>
+                  <button type="button" className={css.close} aria-label={closeLabel} onClick={onClose}>
                     <IconCloseOutline16 size={14} />
                   </button>
                 </div>
diff --git a/packages/client/ui-primitives/tests/atoms.spec.tsx b/packages/client/ui-primitives/tests/atoms.spec.tsx
index 51b14faa17..c6be209fff 100644
--- a/packages/client/ui-primitives/tests/atoms.spec.tsx
+++ b/packages/client/ui-primitives/tests/atoms.spec.tsx
@@ -324,10 +324,11 @@ describe('Modal', () => {
       <Modal open={false} onClose={onClose} title="Create new workspace">body</Modal>)
     expect(screen.queryByRole('dialog')).toBeNull()
     rerender(
-      <Modal open onClose={onClose} title="Create new workspace" description="Name it." footer={<button type="button">Create</button>}>
+      <Modal open onClose={onClose} title="Create new workspace" closeLabel="Configure later" description="Name it." footer={<button type="button">Create</button>}>
         <input aria-label="name" />
       </Modal>)
     expect(screen.getByRole('dialog', { name: 'Create new workspace' })).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Configure later' })).toBeDefined()
     expect(screen.getByText('Name it.')).toBeDefined()
     fireEvent.keyDown(document, { key: 'a' })
     expect(onClose).not.toHaveBeenCalled()
diff --git a/packages/client/ui-settings/README.i18n.yaml b/packages/client/ui-settings/README.i18n.yaml
index 946f1f6c1f..c09aed1d0a 100644
--- a/packages/client/ui-settings/README.i18n.yaml
+++ b/packages/client/ui-settings/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-settings/README.md
-README.md: bb99f9b37927eec57650aa4025deb043b369c78e
-README.zh.md: 64b207aadfbcd7d25c005b3dcd5358013d53c173
+README.md: 9388e9dd3a984bfcebc85b6b1a35bcce4b9b116e
+README.zh.md: 57c91ac5dd0bcc0a3e5e029359bf6c3a2be58ec7
diff --git a/packages/client/ui-settings/README.md b/packages/client/ui-settings/README.md
index bb99f9b379..9388e9dd3a 100644
--- a/packages/client/ui-settings/README.md
+++ b/packages/client/ui-settings/README.md
@@ -2,7 +2,9 @@
 
 English | [中文](README.zh.md)
 
-Settings shell plugin: a pure composition face. It occupies `sidebar.settings` with the trigger chrome and the modal settings panel, and declares the slots registrants fill: `settings.trigger` / `settings.header` / `settings.close` (chrome content) and `settings.section` (one page per feature). The shell ships no copy and reads no locale state — all text arrives from registrants (ui-settings-general owns chrome and General; features own their sections and rows), so the section ledger bump is its only re-render trigger.
+Settings shell plugin: a pure composition face. It occupies `sidebar.settings` with the trigger chrome and modal settings panel, and declares the slots registrants fill: `settings.trigger` / `settings.header` / `settings.close` (chrome content), `settings.section` (one page per feature), and `settings.onboarding` (feature-owned overlays on the empty Hero). The shell ships no copy and reads no locale state — all text arrives from registrants (ui-settings-general owns chrome and General; features own their sections, rows, and onboarding overlays).
+
+The shell supplies onboarding registrants only two navigation facts: whether the session surface is the empty Hero and an `openSection(id)` callback that opens the panel on a registered section. Registrants own capability readiness, dismissal, copy, and mutations; the shell therefore does not become a second configuration fact source.
 
 ## Model Experience
 
diff --git a/packages/client/ui-settings/README.zh.md b/packages/client/ui-settings/README.zh.md
index 64b207aadf..57c91ac5dd 100644
--- a/packages/client/ui-settings/README.zh.md
+++ b/packages/client/ui-settings/README.zh.md
@@ -2,7 +2,9 @@
 
 [English](README.md) | 中文
 
-设置外壳插件：一个纯组合表层。它以触发控件和模态设置面板占用 `sidebar.settings`，并声明由注册方填充的 slot：`settings.trigger`／`settings.header`／`settings.close`（界面框架内容）和 `settings.section`（每项功能一页）。外壳不自带文案，也不读取 locale 状态：所有文本都来自注册方（ui-settings-general 拥有界面框架和「通用」分区；各功能拥有各自的分区和行），因此只有分区账本更新会触发它重新渲染。
+设置外壳插件：一个纯组合表层。它以触发控件和模态设置面板占用 `sidebar.settings`，并声明由注册方填充的 slot：`settings.trigger`／`settings.header`／`settings.close`（界面框架内容）、`settings.section`（每项功能一页）和 `settings.onboarding`（由各功能持有、覆盖在空白 Hero 之上的浮层）。外壳不自带文案，也不读取 locale 状态：所有文本都来自注册方（ui-settings-general 拥有界面框架和「通用」分区；各功能拥有各自的分区、行和首次使用浮层）。
+
+外壳只向首次使用注册方提供两个导航事实：当前会话界面是否为空白 Hero，以及一个 `openSection(id)` 回调；后者会打开设置面板并切换到已注册的指定分区。能力就绪状态、浮层关闭、文案和变更操作均由注册方持有，因此外壳不会成为第二个配置事实来源。
 
 ## 模型体验
 
diff --git a/packages/client/ui-settings/package.json b/packages/client/ui-settings/package.json
index efadf3190f..8c65eee5b2 100644
--- a/packages/client/ui-settings/package.json
+++ b/packages/client/ui-settings/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings",
-  "description": "Settings shell plugin: sidebar trigger + modal panel occupying sidebar.settings; declares the settings.section list slot",
+  "description": "Settings shell plugin: sidebar trigger, modal panel, feature sections, and root-scoped onboarding overlays",
   "version": "0.0.1",
   "private": true,
   "type": "module",
diff --git a/packages/client/ui-settings/src/client/SettingsRoot.tsx b/packages/client/ui-settings/src/client/SettingsRoot.tsx
index c3480e1d18..cfa3ac6cef 100644
--- a/packages/client/ui-settings/src/client/SettingsRoot.tsx
+++ b/packages/client/ui-settings/src/client/SettingsRoot.tsx
@@ -5,7 +5,9 @@
  * close label, sections) arrives from registrants through slots; accessible
  * names resolve to that content (trigger: its own text; dialog:
  * aria-labelledby the title node; close: visually-hidden slot text). Modal
- * open state and the active section id are component-local viewing state.
+ * open state and the active section id are component-local viewing state;
+ * the onboarding slot receives the sessions-derived empty-Hero fact and a
+ * private callback that opens one registered section.
  */
 import { useCallback, useEffect, useId, useRef, useState } from 'react'
 import clsx from 'clsx'
@@ -22,6 +24,8 @@ function navIcon(id: string) {
 type PanelProps = {
   rows: readonly SettingsSectionRow[]
   renderSlot: SettingsRootComponentProps['renderSlot']
+  activeId: string | undefined
+  onSelect: (id: string) => void
   onClose: () => void
 }
 
@@ -30,10 +34,9 @@ type PanelProps = {
  * header button, a mask click, and document-level Escape (mounted only while
  * open, so the listener lifetime is the panel's).
  */
-function SettingsPanel({ rows, renderSlot, onClose }: PanelProps) {
-  // Local selection; entries can unmount underneath it, so the render-time
+function SettingsPanel({ rows, renderSlot, activeId, onSelect, onClose }: PanelProps) {
+  // Entries can unmount underneath the requested id, so the render-time
   // projection falls back to the first row when the id is gone.
-  const [activeId, setActiveId] = useState<string | undefined>(undefined)
   const active = rows.find(r => r.id === activeId)?.id ?? rows[0]?.id
   const titleId = useId()
 
@@ -62,7 +65,7 @@ function SettingsPanel({ rows, renderSlot, onClose }: PanelProps) {
                 type="button"
                 className={clsx(css.navCell, row.id === active && css.active)}
                 aria-current={row.id === active ? 'true' : undefined}
-                onClick={() => { setActiveId(row.id) }}
+                onClick={() => { onSelect(row.id) }}
               >
                 {navIcon(row.id)}
                 <span className={css.navLabel}>{row.label}</span>
@@ -92,14 +95,25 @@ function SettingsPanel({ rows, renderSlot, onClose }: PanelProps) {
  * @returns the settings shell element tree.
  */
 export function SettingsRoot(props: SettingsRootComponentProps) {
-  const { wide, useSections, renderSlot } = props
+  const { wide, useSections, useSessions, renderSlot } = props
   const [open, setOpen] = useState(false)
-  const close = useCallback(() => { setOpen(false) }, [])
+  const [activeId, setActiveId] = useState<string | undefined>(undefined)
+  const close = useCallback(() => {
+    setOpen(false)
+    setActiveId(undefined)
+  }, [])
+  const openSection = useCallback((id: string) => {
+    setActiveId(id)
+    setOpen(true)
+  }, [])
 
   // The ledger tick keeps the nav rows fresh: registrants re-register with
   // freshly localized text on locale change, and the trigger/header/close
   // seats re-render through their own outlets' subscriptions.
   const rows = useSections(s => s)
+  const onboardingActive = useSessions(state =>
+    state.phase === 'ready'
+    && (state.current === undefined || state.byId[state.current]?.blank === true))
 
   return (
     <>
@@ -112,7 +126,16 @@ export function SettingsRoot(props: SettingsRootComponentProps) {
       >
         {renderSlot('settings.trigger', { wide })}
       </button>
-      {open && <SettingsPanel rows={rows} renderSlot={renderSlot} onClose={close} />}
+      {open && (
+        <SettingsPanel
+          rows={rows}
+          renderSlot={renderSlot}
+          activeId={activeId}
+          onSelect={setActiveId}
+          onClose={close}
+        />
+      )}
+      {renderSlot('settings.onboarding', { active: onboardingActive, openSection })}
     </>
   )
 }
diff --git a/packages/client/ui-settings/src/client/contract/slots.ts b/packages/client/ui-settings/src/client/contract/slots.ts
index c20a041858..37847832bf 100644
--- a/packages/client/ui-settings/src/client/contract/slots.ts
+++ b/packages/client/ui-settings/src/client/contract/slots.ts
@@ -47,6 +47,13 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
      * item registrant; the shell neither declares nor renders it.)
      */
     'settings.section': { kind: 'list'; scope: 'root'; owner: SettingsSectionOwnerProps }
+    /**
+     * Root-scoped onboarding overlays contributed by settings features. The
+     * shell supplies whether the current navigation state is the empty Hero
+     * and a private callback that opens one settings section; registrants own
+     * readiness, copy, and dialog behavior.
+     */
+    'settings.onboarding': { kind: 'list'; scope: 'root'; owner: SettingsOnboardingOwnerProps }
   }
 }
 
@@ -72,6 +79,14 @@ export interface SettingsSectionOwnerProps {
   children?: never
 }
 
+/** Owner share of a settings-backed onboarding overlay. */
+export interface SettingsOnboardingOwnerProps {
+  /** Whether the current UI is in its empty Hero/onboarding state. */
+  active: boolean
+  /** Open the settings panel directly on one registered section. */
+  openSection: (id: string) => void
+}
+
 /** One nav row projected from a settings.section registration's options. */
 export interface SettingsSectionRow {
   id: string
@@ -99,5 +114,7 @@ export type SettingsRootInjected = {
  */
 export type SettingsRootComponentProps =
   PropsRuntime<'sidebar.settings'>
-  & PropsRenderSlots<'settings.trigger' | 'settings.header' | 'settings.close' | 'settings.section'>
+  & PropsRenderSlots<
+    'settings.trigger' | 'settings.header' | 'settings.close' | 'settings.section' | 'settings.onboarding'
+  >
   & InjectFace<SettingsRootInjected>
diff --git a/packages/client/ui-settings/src/client/index.ts b/packages/client/ui-settings/src/client/index.ts
index f858be9c37..dad2f89e77 100644
--- a/packages/client/ui-settings/src/client/index.ts
+++ b/packages/client/ui-settings/src/client/index.ts
@@ -1,12 +1,11 @@
 /**
  * Settings shell plugin, browser half. A pure composition face: occupies the
  * sidebar-owned `sidebar.settings` hole with the trigger chrome + modal
- * panel, declares the `settings.trigger` / `settings.header` /
- * `settings.section` slots, and projects the section ledger into the panel
- * navigation. The shell ships no copy and reads no locale state — all text
- * arrives from registrants (ui-settings-general owns the chrome and General
- * content; features own their rows and sections). Export discipline:
- * packages/client/AGENTS.md.
+ * panel, declares its chrome, section, and onboarding slots, and projects the
+ * section ledger into panel navigation. The shell ships no copy and reads no
+ * locale state — all text arrives from registrants (ui-settings-general owns
+ * the chrome and General content; features own their rows, sections, and
+ * onboarding overlays). Export discipline: packages/client/AGENTS.md.
  */
 import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
 import { deferRegistration } from '@deepseek-ai/dsh-client-ui-slots'
@@ -15,7 +14,7 @@ import { SettingsRoot } from './SettingsRoot.tsx'
 
 export type {
   SettingsHeaderOwnerProps, SettingsRootComponentProps, SettingsRootInjected,
-  SettingsSectionOwnerProps, SettingsSectionRow, SettingsTriggerOwnerProps,
+  SettingsOnboardingOwnerProps, SettingsSectionOwnerProps, SettingsSectionRow, SettingsTriggerOwnerProps,
 } from './contract/slots.ts'
 
 /**
@@ -67,6 +66,7 @@ export function apply(ctx: ClientContext): void {
           'settings.header': { kind: 'single', scope: 'root' },
           'settings.close': { kind: 'single', scope: 'root' },
           'settings.section': { kind: 'list', scope: 'root' },
+          'settings.onboarding': { kind: 'list', scope: 'root' },
         },
         inject: injected,
       }, SettingsRoot))
diff --git a/packages/client/ui-settings/tests/apply.spec.ts b/packages/client/ui-settings/tests/apply.spec.ts
index caec65f3f5..de50c88d87 100644
--- a/packages/client/ui-settings/tests/apply.spec.ts
+++ b/packages/client/ui-settings/tests/apply.spec.ts
@@ -24,12 +24,13 @@ function injectedOf(slots: SlotsService): SettingsRootInjected {
   return (entry.inject as () => SettingsRootInjected)()
 }
 
-/** The shell's four child declarations (chrome seats + the section list). */
+/** The shell's five child declarations (chrome, sections, and onboarding overlays). */
 const CHILD_SPECS = {
   'settings.trigger': { kind: 'single', scope: 'root' },
   'settings.header': { kind: 'single', scope: 'root' },
   'settings.close': { kind: 'single', scope: 'root' },
   'settings.section': { kind: 'list', scope: 'root' },
+  'settings.onboarding': { kind: 'list', scope: 'root' },
 } as const
 
 describe('ui-settings apply', () => {
@@ -37,7 +38,7 @@ describe('ui-settings apply', () => {
     expect(inject).toEqual(['slots'])
   })
 
-  it('registers the shell and declares the four child slots, before or after the declaration', async () => {
+  it('registers the shell and declares the five child slots, before or after the declaration', async () => {
     const before = await bench()
     declare(before.slots)
     await before.ctx.plugin({ inject: [...inject], apply }).await()
@@ -100,7 +101,7 @@ describe('ui-settings apply', () => {
     }
   })
 
-  it('unregisters the shell and collapses all four child slots on teardown', async () => {
+  it('unregisters the shell and collapses all five child slots on teardown', async () => {
     const b = await bench()
     declare(b.slots)
     const fiber = b.ctx.plugin({ inject: [...inject], apply })
diff --git a/packages/client/ui-settings/tests/settings-root.spec.tsx b/packages/client/ui-settings/tests/settings-root.spec.tsx
index dd340dc2ea..a7df311672 100644
--- a/packages/client/ui-settings/tests/settings-root.spec.tsx
+++ b/packages/client/ui-settings/tests/settings-root.spec.tsx
@@ -18,11 +18,12 @@ const SEAT_CONTENT: Record<string, string> = {
 
 function mount({
   wide = true,
+  onboardingActive = true,
   rows = [
     { id: 'general', order: 0, label: 'General' },
     { id: 'models', order: 10, label: 'Models' },
   ],
-}: { wide?: boolean; rows?: Row[] } = {}) {
+}: { wide?: boolean; onboardingActive?: boolean; rows?: Row[] } = {}) {
   // Mutable row source standing in for the bound useSections hook; bump()
   // plays a ledger change through the same observable contract.
   let current = rows
@@ -33,10 +34,16 @@ function mount({
       return SEAT_CONTENT[key]
     }) as SettingsRootComponentProps['renderSlot'],
   )
-  // Global standard kit stubs: the shell consumes neither hook.
+  const useSessions = ((select: (state: unknown) => unknown) => select(onboardingActive
+    ? { phase: 'ready', current: undefined, byId: {} }
+    : {
+      phase: 'ready',
+      current: 'active-session',
+      byId: { 'active-session': { blank: false } },
+    })) as never
   const unusedHook = (() => { throw new Error('unused by SettingsRoot') }) as never
   const props: SettingsRootComponentProps = {
-    useSessions: unusedHook,
+    useSessions,
     useWorkspaces: unusedHook,
     wide,
     useSections: (select) => {
@@ -157,6 +164,22 @@ describe('SettingsPanel navigation', () => {
     expect(screen.queryByTestId('section-general')).toBeNull()
   })
 
+  it('hands Hero readiness and a direct section opener to onboarding registrants', () => {
+    const { renderSlot } = mount()
+    const onboardingCall = renderSlot.mock.calls.find(call => call[0] === 'settings.onboarding')
+    expect(onboardingCall?.[1]).toMatchObject({ active: true })
+    act(() => {
+      (onboardingCall?.[1] as { openSection: (id: string) => void }).openSection('models')
+    })
+    expect(screen.getByRole('dialog')).toBeTruthy()
+    expect(screen.getByTestId('section-models')).toBeTruthy()
+
+    cleanup()
+    const active = mount({ onboardingActive: false }).renderSlot.mock.calls
+      .find(call => call[0] === 'settings.onboarding')
+    expect(active?.[1]).toMatchObject({ active: false })
+  })
+
   it('falls back to the first row when the active entry unregisters', () => {
     const { bump } = mount()
     openPanel()
diff --git a/packages/client/ui-trajectory/src/client/TrajectoryTable.module.css b/packages/client/ui-trajectory/src/client/TrajectoryTable.module.css
index 3e0e96b838..c7b7948845 100644
--- a/packages/client/ui-trajectory/src/client/TrajectoryTable.module.css
+++ b/packages/client/ui-trajectory/src/client/TrajectoryTable.module.css
@@ -16,6 +16,7 @@
   flex: 1;
   min-width: 0;
   overflow: auto;
+  container: trajectory-table / inline-size;
 }
 
 .table {
@@ -235,6 +236,18 @@
   width: 3px;
 }
 
+.table tbody tr[data-error='true'] .turnRail {
+  background: color-mix(
+    in srgb,
+    var(--dsw-alias-state-error-primary) 22%,
+    var(--dsw-alias-bg-layer-1)
+  );
+}
+
+.table tbody tr[data-error='true'] .selectionRail {
+  background: var(--dsw-alias-state-error-primary);
+}
+
 .table tbody tr[data-turn-start='true'] td {
   position: relative;
   overflow: visible;
@@ -279,6 +292,10 @@
   white-space: nowrap;
 }
 
+.turnLabelCompact {
+  display: none;
+}
+
 .turnLabelActive {
   color: color-mix(
     in srgb,
@@ -325,11 +342,66 @@
   user-select: none;
 }
 
+.kindTagIcon {
+  display: none;
+  align-items: center;
+  justify-content: center;
+  width: 13px;
+  height: 13px;
+}
+
+.kindTagLabel {
+  display: inline;
+}
+
 .table .kindSlot .message {
   justify-content: center;
   width: 100%;
 }
 
+@container trajectory-table (max-width: 620px) {
+  .eventColumn {
+    width: 50px;
+  }
+
+  .event {
+    padding-right: 3px !important;
+    padding-left: 28px !important;
+  }
+
+  .requestBoundaryControl {
+    left: 6px;
+  }
+
+  .kindSlot {
+    width: 19px;
+  }
+
+  .kindTag,
+  .table .kindSlot .message {
+    justify-content: center;
+    width: 19px;
+    padding-right: 0;
+    padding-left: 0;
+  }
+
+  .kindTagIcon {
+    display: inline-flex;
+  }
+
+  .kindTagLabel {
+    display: none;
+  }
+
+  .turnLabelFull {
+    display: none;
+  }
+
+  .turnLabelCompact {
+    display: inline;
+  }
+}
+
 .user {
   color: var(--dsw-alias-state-business-primary);
   background: var(--dsw-alias-state-business-tertiary);
@@ -576,6 +648,28 @@
   color: var(--dsw-alias-state-error-primary);
 }
 
+.overview dd.error {
+  color: var(--dsw-alias-state-error-primary);
+}
+
+.details .errorPayload {
+  color: var(--dsw-alias-state-error-primary);
+}
+
+.details .errorPayload .resultBlockText {
+  color: inherit;
+}
+
+.details .jsonPayload.errorPayload,
+.details .jsonPreview.errorPayload {
+  --json-tree-property: var(--dsw-alias-state-error-primary);
+  --json-tree-string: var(--dsw-alias-state-error-primary);
+  --json-tree-number: var(--dsw-alias-state-error-primary);
+  --json-tree-keyword: var(--dsw-alias-state-error-primary);
+  --json-tree-punctuation: var(--dsw-alias-state-error-primary);
+  --json-tree-icon: var(--dsw-alias-state-error-primary);
+}
+
 .details {
   position: relative;
   display: flex;
diff --git a/packages/client/ui-trajectory/src/client/TrajectoryTable.tsx b/packages/client/ui-trajectory/src/client/TrajectoryTable.tsx
index a979be2642..5a78e95a40 100644
--- a/packages/client/ui-trajectory/src/client/TrajectoryTable.tsx
+++ b/packages/client/ui-trajectory/src/client/TrajectoryTable.tsx
@@ -1,9 +1,15 @@
 /** Turn-aware trajectory event ledger with a local record inspector. */
 
-import { useEffect, useRef, useState } from 'react'
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import type { CSSProperties, ReactNode } from 'react'
 import {
-  extractMarkdownPlainText, IconChevronRightOutline14, JsonTree, MarkdownText,
+  IconChevronRightOutline14,
+  IconSettingsOutline16,
+  IconSparkle16,
+  IconUserOutline16,
+  JsonTree,
+  MarkdownText,
+  Tooltip,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import { structuredPatch } from 'diff'
 import type {
@@ -13,7 +19,7 @@ import type {
   AssistantMetricDetail, TrajectoryCellKind, TrajectoryCellProps, TrajectorySourceBlock,
 } from './trajectory-record.ts'
 import { formatElapsedSeconds } from './trajectory-record.ts'
-import type { TrajectoryTurnModel } from './layout.ts'
+import { trajectoryPreviewText, type TrajectoryTurnModel } from './layout.ts'
 import css from './TrajectoryTable.module.css'
 
 const KIND_LABEL: Record<TrajectoryCellKind, string> = {
@@ -26,6 +32,77 @@ const KIND_LABEL: Record<TrajectoryCellKind, string> = {
   subtool: 'SUBTOOL',
 }
 
+function ToolWrenchIcon(): ReactNode {
+  return (
+    <svg
+      width="13"
+      height="13"
+      viewBox="0 0 16 16"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="1.5"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      data-role-icon="wrench"
+      aria-hidden="true"
+    >
+      <path d="M14 3.3a3.8 3.8 0 0 1-4.8 4.8l-5.1 5.1a1.6 1.6 0 1 1-2.3-2.3l5.1-5.1A3.8 3.8 0 0 1 11.7 1l-2.3 2.3 2.3 2.3L14 3.3Z" />
+    </svg>
+  )
+}
+
+function InformationIcon(): ReactNode {
+  return (
+    <svg
+      width="14"
+      height="14"
+      viewBox="0 0 16 16"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="1.4"
+      strokeLinecap="round"
+      data-role-icon="information"
+      aria-hidden="true"
+    >
+      <circle cx="8" cy="8" r="6.7" />
+      <circle cx="8" cy="5.5" r=".85" fill="currentColor" stroke="none" />
+      <path d="M8 7.75v3.4" strokeWidth="1.8" />
+    </svg>
+  )
+}
+
+function CompactedIcon(): ReactNode {
+  return (
+    <svg
+      width="13"
+      height="13"
+      viewBox="0 0 16 16"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="1.5"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      data-role-icon="compacted"
+      aria-hidden="true"
+    >
+      <path d="m2.5 2.5 3.75 3.75M3 6.25h3.25V3" />
+      <path d="m13.5 2.5-3.75 3.75M13 6.25H9.75V3" />
+      <path d="m2.5 13.5 3.75-3.75M3 9.75h3.25V13" />
+      <path d="m13.5 13.5-3.75-3.75M13 9.75H9.75V13" />
+    </svg>
+  )
+}
+
+const KIND_ICON: Record<TrajectoryCellKind, ReactNode> = {
+  system: <IconSettingsOutline16 size={13} />,
+  user: <IconUserOutline16 size={13} />,
+  context: <InformationIcon />,
+  compacted: <CompactedIcon />,
+  message: <IconSparkle16 size={13} />,
+  tool: <ToolWrenchIcon />,
+  subtool: <ToolWrenchIcon />,
+}
+
 interface TableRecord {
   turn: number
   group: string
@@ -225,6 +302,8 @@ export interface TrajectoryTableProps {
   onSelectedIndexChange?: (index: number | null) => void
   /** Report a direct user selection from a ledger row. */
   onRecordSelect?: (index: number) => void
+  /** One externally requested record selection; a new object repeats the request. */
+  recordSelection?: { readonly index: number } | null
   /** Clear selection state owned by the ledger host. */
   onClearSelection?: () => void
   /** Turn ids whose rows after the first are folded into a summary. */
@@ -725,13 +804,13 @@ function detailTabs(record: TableRecord): readonly DetailTabItem[] {
 
 function recordDisplayText(cell: TrajectoryCellProps): string {
   if (isToolCallOnly(cell)) return ''
+  if (cell.text !== '') return cell.text
   const markdown = cell.kind === 'user' || cell.kind === 'context'
     ? cell.inputDetail
     : cell.kind === 'message'
       ? cell.outputDetail ?? cell.thinkingDetail
       : undefined
-  if (!markdown) return cell.text
-  return extractMarkdownPlainText(markdown).replace(/\s+/g, ' ').trim()
+  return markdown === undefined ? '' : trajectoryPreviewText(markdown)
 }
 
 function toolCallTextParts(
@@ -1047,13 +1126,20 @@ function SystemPromptDiff({
 
 function ToolOutputBlocks({
   blocks,
+  error,
   preview,
 }: {
   blocks: readonly TrajectorySourceBlock[]
+  error: boolean
   preview: boolean
 }) {
   return (
-    <div className={preview ? `${css.resultBlocks} ${css.resultBlocksPreview}` : css.resultBlocks}>
+    <div className={[
+      css.resultBlocks,
+      preview ? css.resultBlocksPreview : undefined,
+      error ? css.errorPayload : undefined,
+    ].filter((value): value is string => value !== undefined).join(' ')}
+    >
       {blocks.map((block, index) => (
         block.imageSrc !== undefined
           ? <PanelImage block={block} preview={preview} key={index} />
@@ -1226,6 +1312,9 @@ function RecordPayload({
     ? 'No payload captured'
     : 'No result captured'
   if (!value) return <p className={css.noPayload}>{missing}</p>
+  const error = direction === 'output' && record.cell.isError === true
+  const payloadClass = preview ? css.jsonPreview : css.jsonPayload
+  const payloadClassName = error ? `${payloadClass} ${css.errorPayload}` : payloadClass
 
   const json = parseJsonContainer(value)
   const singleTextResult = direction === 'output'
@@ -1236,7 +1325,7 @@ function RecordPayload({
       <JsonTree
         data={json}
         label="Result JSON"
-        className={preview ? css.jsonPreview : css.jsonPayload}
+        className={payloadClassName}
       />
     )
   }
@@ -1249,6 +1338,7 @@ function RecordPayload({
     return (
       <ToolOutputBlocks
         blocks={record.cell.outputBlocks}
+        error={error}
         preview={preview}
       />
     )
@@ -1262,7 +1352,11 @@ function RecordPayload({
   )
   if (markdown) {
     return (
-      <div className={preview ? css.markdownPreview : css.markdownPayload}>
+      <div className={[
+        preview ? css.markdownPreview : css.markdownPayload,
+        error ? css.errorPayload : undefined,
+      ].filter((className): className is string => className !== undefined).join(' ')}
+      >
         <MarkdownText text={value} />
       </div>
     )
@@ -1272,7 +1366,7 @@ function RecordPayload({
       <JsonTree
         data={json}
         label={`${direction === 'input' ? 'Payload' : 'Result'} JSON`}
-        className={preview ? css.jsonPreview : css.jsonPayload}
+        className={payloadClassName}
       />
     )
   }
@@ -1280,7 +1374,7 @@ function RecordPayload({
     <pre className={[
       css.payload,
       preview ? css.payloadPreview : undefined,
-      record.cell.isError ? css.error : undefined,
+      error ? css.errorPayload : undefined,
       value === 'No output' ? css.noOutputText : undefined,
     ].filter((value): value is string => value !== undefined).join(' ')}
     >
@@ -1401,6 +1495,7 @@ export function TrajectoryTable({
   searchMatchIndexes = null,
   onSelectedIndexChange,
   onRecordSelect,
+  recordSelection = null,
   onClearSelection,
   collapsedTurns,
   onToggleTurn,
@@ -1412,15 +1507,16 @@ export function TrajectoryTable({
   const [selectedIndex, setSelectedIndex] = useState<number | null>(null)
   const [selectedRequest, setSelectedRequest] = useState<SelectedRequest | null>(null)
   const [activeTab, setActiveTab] = useState<DetailTab>('overview')
-  const [thinkingExpanded, setThinkingExpanded] = useState(true)
+  const [thinkingExpanded, setThinkingExpanded] = useState(false)
   const [detailsWidth, setDetailsWidth] = useState<number | null>(null)
   const [toolRequestOffset, setToolRequestOffset] = useState<number | null>(null)
   const detailsResizeDrag = useRef<DetailsResizeDrag | null>(null)
+  const appliedRecordSelection = useRef<TrajectoryTableProps['recordSelection']>(null)
   const tabHistory = useRef<Set<DetailTab>>(new Set(['overview']))
   useEffect(() => {
     onSelectedIndexChange?.(selectedIndex)
   }, [onSelectedIndexChange, selectedIndex])
-  const allRecords = flattenRecords(turns)
+  const allRecords = useMemo(() => flattenRecords(turns), [turns])
   const requestNumbers = indexRequestNumbers(allRecords, sessionRequestNumbers)
   const records = searchMatchIndexes === null
     ? collapseAssistantRecords(
@@ -1537,7 +1633,7 @@ export function TrajectoryTable({
     onClearSelection?.()
   }
 
-  const selectRecord = (index: number) => {
+  const selectRecord = useCallback((index: number) => {
     const record = allRecords.find(candidate => candidate.cell.index === index)
     onRecordSelect?.(index)
     setSelectedRequest(null)
@@ -1547,7 +1643,15 @@ export function TrajectoryTable({
     const available = new Set(tabs.map(tab => tab.id))
     const recent = [...tabHistory.current].reverse().find(tab => available.has(tab))
     setActiveTab(recent ?? tabs[0]?.id ?? 'overview')
-  }
+  }, [allRecords, onRecordSelect])
+  useEffect(() => {
+    if (
+      recordSelection === null
+      || appliedRecordSelection.current === recordSelection
+    ) return
+    appliedRecordSelection.current = recordSelection
+    selectRecord(recordSelection.index)
+  }, [recordSelection, selectRecord])
 
   const selectRequest = (
     request: SelectedRequest,
@@ -1749,8 +1853,14 @@ export function TrajectoryTable({
                         className={activeTurn === record.turn
                           ? `${css.turnLabel} ${css.turnLabelActive}`
                           : css.turnLabel}
+                        aria-label={`Turn ${record.turn}`}
                       >
-                        Turn {record.turn}
+                        <span className={css.turnLabelFull} aria-hidden="true">
+                          Turn {record.turn}
+                        </span>
+                        <span className={css.turnLabelCompact} aria-hidden="true">
+                          #{record.turn}
+                        </span>
                       </span>
                     )}
                     <div className={css.eventInner}>
@@ -1758,24 +1868,33 @@ export function TrajectoryTable({
                         <span
                           className={css.kindSlot}
                         >
-                          <span className={`${css.kindTag} ${
-                            record.cell.kind === 'system'
-                              ? css.systemNeutral
-                              : record.cell.kind === 'context'
-                                ? css.contextGreen
-                                : record.cell.kind === 'compacted'
-                                  ? css.compacted
-                                  : record.cell.kind === 'tool'
-                                    ? css.toolAmber
-                                    : record.cell.kind === 'message'
-                                      ? css.assistantVioletBright
-                                      : record.cell.kind === 'subtool'
-                                        ? css.subtoolAmber
-                                        : css[record.cell.kind]
-                          }`}
-                          >
-                            {KIND_LABEL[record.cell.kind]}
-                          </span>
+                          <Tooltip label={KIND_LABEL[record.cell.kind]} side="bottom">
+                            <span
+                              className={`${css.kindTag} ${
+                                record.cell.kind === 'system'
+                                  ? css.systemNeutral
+                                  : record.cell.kind === 'context'
+                                    ? css.contextGreen
+                                    : record.cell.kind === 'compacted'
+                                      ? css.compacted
+                                      : record.cell.kind === 'tool'
+                                        ? css.toolAmber
+                                        : record.cell.kind === 'message'
+                                          ? css.assistantVioletBright
+                                          : record.cell.kind === 'subtool'
+                                            ? css.subtoolAmber
+                                            : css[record.cell.kind]
+                              }`}
+                              data-role-kind={record.cell.kind}
+                            >
+                              <span className={css.kindTagIcon} aria-hidden="true">
+                                {KIND_ICON[record.cell.kind]}
+                              </span>
+                              <span className={css.kindTagLabel}>
+                                {KIND_LABEL[record.cell.kind]}
+                              </span>
+                            </span>
+                          </Tooltip>
                         </span>
                       )}
                     </div>
@@ -2008,7 +2127,9 @@ export function TrajectoryTable({
                 <dl className={css.overview}>
                   <div>
                     <dt>Status</dt>
-                    <dd>{statusLabel(selectedRequestState)}</dd>
+                    <dd className={selectedRequestState === 'error' ? css.error : undefined}>
+                      {statusLabel(selectedRequestState)}
+                    </dd>
                   </div>
                   {selectedRequestInfo?.purpose === 'compaction' && (
                     <div>
@@ -2049,7 +2170,7 @@ export function TrajectoryTable({
                   {selectedRequestInfo?.error !== undefined && (
                     <div>
                       <dt>Error</dt>
-                      <dd>{selectedRequestInfo.error}</dd>
+                      <dd className={css.error}>{selectedRequestInfo.error}</dd>
                     </div>
                   )}
                   {selectedRequestInfo?.retry !== undefined && (
@@ -2157,7 +2278,9 @@ export function TrajectoryTable({
                 <dl className={css.overview}>
                   <div>
                     <dt>Status</dt>
-                    <dd>{statusLabel(selectedState)}</dd>
+                    <dd className={selectedState === 'error' ? css.error : undefined}>
+                      {statusLabel(selectedState)}
+                    </dd>
                   </div>
                   <div>
                     <dt>Duration</dt>
@@ -2260,7 +2383,9 @@ export function TrajectoryTable({
                   )}
                   <div>
                     <dt>Status</dt>
-                    <dd>{statusLabel(selectedState)}</dd>
+                    <dd className={selectedState === 'error' ? css.error : undefined}>
+                      {statusLabel(selectedState)}
+                    </dd>
                   </div>
                   {selected.cell.kind === 'message' && (
                     <TokenRows cell={selected.cell} />
diff --git a/packages/client/ui-trajectory/src/client/TrajectoryTimeline.module.css b/packages/client/ui-trajectory/src/client/TrajectoryTimeline.module.css
index 734b2f3326..402387da48 100644
--- a/packages/client/ui-trajectory/src/client/TrajectoryTimeline.module.css
+++ b/packages/client/ui-trajectory/src/client/TrajectoryTimeline.module.css
@@ -70,16 +70,29 @@
 .lanes {
   position: absolute;
   z-index: 2;
-  inset: 7px 0;
+  top: 7px;
+  bottom: 7px;
+  left: var(--trajectory-domain-left);
+  width: var(--trajectory-domain-width);
 }
 
 .turnBoundaries {
   position: absolute;
   z-index: 3;
-  inset: 0;
+  top: 0;
+  bottom: 0;
+  left: var(--trajectory-domain-left);
+  width: var(--trajectory-domain-width);
   pointer-events: none;
 }
 
+@media (prefers-reduced-motion: no-preference) {
+  .lanes[data-animate-viewport='true'],
+  .turnBoundaries[data-animate-viewport='true'] {
+    transition: left 180ms ease-out;
+  }
+}
+
 .turnBoundary {
   position: absolute;
   top: 0;
@@ -133,6 +146,10 @@
   );
 }
 
+.span[data-error='true'] {
+  background: var(--dsw-alias-state-error-primary);
+}
+
 .span[data-equal-duration='true'] {
   width: 8px;
   min-width: 8px;
@@ -142,6 +159,18 @@
   opacity: 0.2;
 }
 
+.span[data-hovered='true']:not([data-current='true']) {
+  z-index: 1;
+  opacity: 0.78;
+  box-shadow:
+    0 0 0 1px var(--dsw-alias-bg-layer-2),
+    0 0 0 2px color-mix(
+      in srgb,
+      var(--dsw-alias-state-business-primary) 80%,
+      transparent
+    );
+}
+
 .span[data-current='true'] {
   z-index: 1;
   opacity: 1;
diff --git a/packages/client/ui-trajectory/src/client/TrajectoryTimeline.tsx b/packages/client/ui-trajectory/src/client/TrajectoryTimeline.tsx
index 8ad1afefc1..89e3b8bb2b 100644
--- a/packages/client/ui-trajectory/src/client/TrajectoryTimeline.tsx
+++ b/packages/client/ui-trajectory/src/client/TrajectoryTimeline.tsx
@@ -15,12 +15,20 @@ import css from './TrajectoryTimeline.module.css'
 
 const MINIMUM_DRAG_PX = 3
 const MINIMUM_ZOOM_OPERATIONS = 4
+const EDGE_PAN_ZONE_FRACTION = 0.08
+const EDGE_PAN_STEP_FRACTION = 0.025
+const MAXIMUM_EDGE_PAN_PX = 32
 
 interface FractionRange {
   start: number
   end: number
 }
 
+interface HoverPoint {
+  fraction: number
+  recordIndex: number | null
+}
+
 /** Props for the fixed full-domain overview above the trajectory ledger. */
 export interface TrajectoryTimelineProps {
   turns: readonly TrajectoryTurnModel[]
@@ -30,6 +38,9 @@ export interface TrajectoryTimelineProps {
   /** Record indexes matching the active ledger search, or null without a query. */
   searchMatchIndexes?: ReadonlySet<number> | null
   onRangeChange: (range: TrajectoryTimeRange | null) => void
+  /** Select a directly clicked timeline block. */
+  onRecordSelect?: (index: number) => void
+  /** Bring the nearest record into view after clicking timeline whitespace. */
   onRecordFocus?: (index: number) => void
 }
 
@@ -41,11 +52,16 @@ function clampFraction(value: number): number {
   return Math.min(1, Math.max(0, value))
 }
 
-function centeredRange(center: number, width: number): FractionRange {
-  const clampedWidth = Math.min(1, Math.max(0, width))
+function centeredRange(
+  center: number,
+  width: number,
+  minimum: number,
+  maximum: number,
+): FractionRange {
+  const clampedWidth = Math.min(maximum - minimum, Math.max(0, width))
   const start = Math.min(
-    Math.max(center - clampedWidth / 2, 0),
-    1 - clampedWidth,
+    Math.max(center - clampedWidth / 2, minimum),
+    maximum - clampedWidth,
   )
   return { start, end: start + clampedWidth }
 }
@@ -79,6 +95,7 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
   selectedIndex = null,
   searchMatchIndexes = null,
   onRangeChange,
+  onRecordSelect,
   onRecordFocus,
 }: TrajectoryTimelineProps) {
   const model = useMemo(() => deriveTrajectoryTimeline(turns, mode), [mode, turns])
@@ -94,10 +111,16 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
     )),
     [turns],
   )
-  const dragRef = useRef<{ pointerId: number; anchor: number; width: number } | null>(null)
-  const [draft, setDraft] = useState<FractionRange | null>(null)
-  const [hover, setHover] = useState<number | null>(null)
+  const dragRef = useRef<{
+    pointerId: number
+    anchorTime: number
+    anchorClientX: number
+    recordIndex: number | null
+  } | null>(null)
+  const [draft, setDraft] = useState<TrajectoryTimeRange | null>(null)
+  const [hover, setHover] = useState<HoverPoint | null>(null)
   const [viewport, setViewport] = useState<TrajectoryTimeRange | null>(null)
+  const [animateViewport, setAnimateViewport] = useState(false)
   useEffect(() => {
     if (
       model !== null
@@ -109,11 +132,35 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
   }, [model, onRangeChange, range])
   useEffect(() => {
     if (model === null) return
+    setAnimateViewport(false)
     setViewport(current =>
       current !== null && (current.end < model.start || current.start > model.end)
         ? null
         : current)
   }, [model])
+  useEffect(() => {
+    if (model === null || selectedIndex === null) return
+    const selectedSpan = model.spans.find(span => span.index === selectedIndex)
+    if (selectedSpan === undefined) return
+    setAnimateViewport(true)
+    setViewport((current) => {
+      if (current === null) return current
+      if (
+        selectedSpan.end > current.start
+        && selectedSpan.start < current.end
+      ) return current
+      const duration = Math.max(1, current.end - current.start)
+      const desiredStart = selectedSpan.end <= current.start
+        ? selectedSpan.start
+        : selectedSpan.end - duration
+      const nextStart = Math.min(
+        Math.max(desiredStart, model.start),
+        Math.max(model.start, model.end - duration),
+      )
+      if (nextStart === current.start) return current
+      return { start: nextStart, end: nextStart + duration }
+    })
+  }, [model, selectedIndex])
   const fullDuration = Math.max(1, (model?.end ?? 0) - (model?.start ?? 0))
   const viewportDuration = Math.min(
     fullDuration,
@@ -127,16 +174,21 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
     )
   const domainDuration = viewport === null ? fullDuration : viewportDuration
   const domainStart = viewport === null ? model?.start ?? 0 : viewportStart
+  const projectedDomainStyle = model === null
+    ? undefined
+    : {
+      '--trajectory-domain-left':
+        `${-(domainStart - model.start) / domainDuration * 100}%`,
+      '--trajectory-domain-width': `${fullDuration / domainDuration * 100}%`,
+    } as CSSProperties
   const committed = model === null || range === null
     ? null
     : rangeFraction(range, domainStart, domainDuration)
-  const visibleRange = draft ?? committed
-  const activeRange = draft === null
-    ? range
-    : {
-      start: domainStart + draft.start * domainDuration,
-      end: domainStart + draft.end * domainDuration,
-    }
+  const draftFraction = model === null || draft === null
+    ? null
+    : rangeFraction(draft, domainStart, domainDuration)
+  const visibleRange = draftFraction ?? committed
+  const activeRange = draft ?? range
 
   if (model === null) {
     return (
@@ -151,9 +203,9 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
     )
   }
 
-  const minimumSelectionFraction = Math.min(
-    1,
-    fullDuration / domainDuration / model.spans.length,
+  const minimumSelectionDuration = Math.min(
+    domainDuration,
+    fullDuration / model.spans.length,
   )
 
   const fractionAt = (event: PointerEvent<HTMLDivElement>): number => {
@@ -161,51 +213,107 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
     return clampFraction((event.clientX - rect.left) / Math.max(1, rect.width))
   }
 
-  const commit = (fraction: FractionRange) => {
-    onRangeChange({
-      start: domainStart + fraction.start * domainDuration,
-      end: domainStart + fraction.end * domainDuration,
-    })
+  const recordIndexAt = (event: PointerEvent<HTMLDivElement>): number | null => {
+    const target = event.target instanceof HTMLElement ? event.target : null
+    const value = target?.closest<HTMLElement>('[data-timeline-record-index]')
+      ?.dataset.timelineRecordIndex
+    if (value === undefined) return null
+    const index = Number(value)
+    return Number.isFinite(index) ? index : null
+  }
+
+  const commit = (nextRange: TrajectoryTimeRange) => {
+    onRangeChange(nextRange)
   }
 
   const onPointerDown = (event: PointerEvent<HTMLDivElement>) => {
     if (event.button !== 0) return
-    const rect = event.currentTarget.getBoundingClientRect()
     const anchor = fractionAt(event)
-    setHover(anchor)
-    dragRef.current = { pointerId: event.pointerId, anchor, width: Math.max(1, rect.width) }
+    const anchorTime = domainStart + anchor * domainDuration
+    const recordIndex = recordIndexAt(event)
+    setHover({ fraction: anchor, recordIndex })
+    dragRef.current = {
+      pointerId: event.pointerId,
+      anchorTime,
+      anchorClientX: event.clientX,
+      recordIndex,
+    }
     if (typeof event.currentTarget.setPointerCapture === 'function') {
       event.currentTarget.setPointerCapture(event.pointerId)
     }
-    setDraft({ start: anchor, end: anchor })
+    setDraft({ start: anchorTime, end: anchorTime })
   }
 
   const onPointerMove = (event: PointerEvent<HTMLDivElement>) => {
     const drag = dragRef.current
+    const rect = event.currentTarget.getBoundingClientRect()
     const fraction = fractionAt(event)
-    setHover(fraction)
+    setHover({ fraction, recordIndex: recordIndexAt(event) })
     if (drag === null || drag.pointerId !== event.pointerId) return
-    setDraft(orderedRange(drag.anchor, fraction))
+    let nextDomainStart = domainStart
+    if (viewport !== null) {
+      const localX = event.clientX - rect.left
+      const edgeWidth = Math.min(
+        MAXIMUM_EDGE_PAN_PX,
+        Math.max(1, rect.width * EDGE_PAN_ZONE_FRACTION),
+      )
+      const direction = localX < edgeWidth
+        ? -1
+        : localX > rect.width - edgeWidth ? 1 : 0
+      if (direction !== 0) {
+        const edgeDistance = direction < 0
+          ? edgeWidth - localX
+          : localX - (rect.width - edgeWidth)
+        const strength = clampFraction(edgeDistance / edgeWidth)
+        const desiredStart = domainStart
+          + direction * domainDuration * EDGE_PAN_STEP_FRACTION
+          * Math.max(0.2, strength)
+        nextDomainStart = Math.min(
+          Math.max(desiredStart, model.start),
+          model.end - domainDuration,
+        )
+        if (nextDomainStart !== domainStart) {
+          setAnimateViewport(false)
+          setViewport({
+            start: nextDomainStart,
+            end: nextDomainStart + domainDuration,
+          })
+        }
+      }
+    }
+    const pointTime = nextDomainStart + fraction * domainDuration
+    setDraft(orderedRange(drag.anchorTime, pointTime))
   }
 
   const onPointerEnd = (event: PointerEvent<HTMLDivElement>) => {
     const drag = dragRef.current
     if (drag === null || drag.pointerId !== event.pointerId) return
-    const point = fractionAt(event)
-    const selected = orderedRange(drag.anchor, point)
-    setHover(point)
+    const pointFraction = fractionAt(event)
+    const pointTime = domainStart + pointFraction * domainDuration
+    const selected = orderedRange(drag.anchorTime, pointTime)
+    setHover({ fraction: pointFraction, recordIndex: recordIndexAt(event) })
     dragRef.current = null
     setDraft(null)
-    const click = (selected.end - selected.start) * drag.width < MINIMUM_DRAG_PX
-    const committedRange = selected.end - selected.start < minimumSelectionFraction
+    const click = Math.abs(event.clientX - drag.anchorClientX) < MINIMUM_DRAG_PX
+    const clickedSpan = click && drag.recordIndex !== null
+      ? model.spans.find(span => span.index === drag.recordIndex)
+      : undefined
+    if (clickedSpan !== undefined) {
+      onRangeChange(null)
+      onRecordSelect?.(clickedSpan.index)
+      return
+    }
+    const committedRange = selected.end - selected.start < minimumSelectionDuration
       ? centeredRange(
         click ? selected.start : (selected.start + selected.end) / 2,
-        minimumSelectionFraction,
+        minimumSelectionDuration,
+        model.start,
+        model.end,
       )
       : selected
     commit(committedRange)
     if (click) {
-      const timelinePoint = domainStart + selected.start * domainDuration
+      const timelinePoint = selected.start
       const nearest = model.spans.reduce((candidate, span) => {
         const candidateDistance = timelinePoint < candidate.start
           ? candidate.start - timelinePoint
@@ -233,6 +341,7 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
 
   const onWheel = (event: WheelEvent<HTMLDivElement>) => {
     event.preventDefault()
+    setAnimateViewport(false)
     const rect = event.currentTarget.getBoundingClientRect()
     const anchorFraction =
       clampFraction((event.clientX - rect.left) / Math.max(1, rect.width))
@@ -278,16 +387,18 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
           onWheel={onWheel}
           onContextMenu={(event) => {
             event.preventDefault()
+            setAnimateViewport(false)
             onRangeChange(null)
             setViewport(null)
           }}
         >
-          {hover !== null && draft === null && (
+          {hover !== null && hover.recordIndex === null && draft === null && (
             <div
               className={css.hoverLine}
+              data-timeline-hover-line
               aria-hidden="true"
               style={{
-                '--trajectory-hover-left': `${hover * 100}%`,
+                '--trajectory-hover-left': `${hover.fraction * 100}%`,
               } as CSSProperties}
             />
           )}
@@ -313,7 +424,12 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
               />
             </>
           )}
-          <div className={css.turnBoundaries} aria-hidden="true">
+          <div
+            className={css.turnBoundaries}
+            data-animate-viewport={animateViewport || undefined}
+            aria-hidden="true"
+            style={projectedDomainStyle}
+          >
             {model.turnBoundaries
               .slice(1)
               .filter(boundary =>
@@ -326,24 +442,35 @@ export const TrajectoryTimeline = memo(function TrajectoryTimeline({
                   key={boundary.turn}
                   style={{
                     '--trajectory-turn-left':
-                      `${(boundary.time - domainStart) / domainDuration * 100}%`,
+                      `${(boundary.time - model.start) / fullDuration * 100}%`,
                   } as CSSProperties}
                 />
               ))}
           </div>
-          <div className={css.lanes} aria-hidden="true">
+          <div
+            className={css.lanes}
+            data-animate-viewport={animateViewport || undefined}
+            data-timeline-domain
+            aria-hidden="true"
+            style={projectedDomainStyle}
+          >
             {model.spans
-              .filter(span => span.end >= domainStart && span.start <= domainStart + domainDuration)
+              .filter(span =>
+                span.index === selectedIndex
+                || (span.end >= domainStart && span.start <= domainStart + domainDuration))
               .map((span) => {
-                const left = (span.start - domainStart) / domainDuration
-                const width = (span.end - span.start) / domainDuration
+                const left = (span.start - model.start) / fullDuration
+                const width = (span.end - span.start) / fullDuration
                 const durationMs = durationByIndex.get(span.index)
                 return (
                   <span
                     className={css.span}
                     data-timeline-span={span.kind}
+                    data-timeline-record-index={span.index}
+                    data-error={span.isError || undefined}
                     data-equal-duration={mode === 'time' || undefined}
                     data-current={span.index === selectedIndex || undefined}
+                    data-hovered={hover?.recordIndex === span.index || undefined}
                     data-search-match={searchMatchIndexes === null
                       ? undefined
                       : searchMatchIndexes.has(span.index) ? 'true' : 'false'}
diff --git a/packages/client/ui-trajectory/src/client/TrajectoryView.tsx b/packages/client/ui-trajectory/src/client/TrajectoryView.tsx
index 6946f747ff..e09b03e51c 100644
--- a/packages/client/ui-trajectory/src/client/TrajectoryView.tsx
+++ b/packages/client/ui-trajectory/src/client/TrajectoryView.tsx
@@ -147,6 +147,9 @@ export function TrajectoryView({
   const [actualTime, setActualTime] = useState(false)
   const [searchQuery, setSearchQuery] = useState('')
   const [selectedTimelineIndex, setSelectedTimelineIndex] = useState<number | null>(null)
+  const [timelineRecordSelection, setTimelineRecordSelection] = useState<{
+    readonly index: number
+  } | null>(null)
   const ledgerRef = useRef<HTMLDivElement>(null)
   const inspection = useHistory(snapshot => snapshot.inspection)
   const nodes = inspection.eventNodes
@@ -478,7 +481,20 @@ export function TrajectoryView({
         selectedIndex={selectedTimelineIndex}
         searchMatchIndexes={searchMatchIndexes}
         onRangeChange={(range) => {
-          setTimelineSelection(range === null ? null : { branchId: currentBranch.id, range })
+          setTimelineSelection(range === null ? null : {
+            branchId: currentBranch.id,
+            range,
+          })
+        }}
+        onRecordSelect={(index) => {
+          setTimelineSelection(null)
+          setTimelineRecordSelection({ index })
+          setSelectedTimelineIndex(index)
+          const row = ledgerRef.current
+            ?.querySelector<HTMLElement>(`tr[data-record-index="${index}"]`)
+          if (row !== undefined && row !== null && typeof row.scrollIntoView === 'function') {
+            row.scrollIntoView({ behavior: 'smooth', block: 'center' })
+          }
         }}
         onRecordFocus={(index) => {
           const row = ledgerRef.current
@@ -497,6 +513,7 @@ export function TrajectoryView({
           searchMatchIndexes={searchMatchIndexes}
           onSelectedIndexChange={setSelectedTimelineIndex}
           onRecordSelect={handleRecordSelect}
+          recordSelection={timelineRecordSelection}
           onClearSelection={() => { setTimelineSelection(null) }}
           collapsedTurns={collapsedTurns}
           onToggleTurn={toggleTurn}
diff --git a/packages/client/ui-trajectory/src/client/layout.ts b/packages/client/ui-trajectory/src/client/layout.ts
index 6e69d7ae31..0745a0c8df 100644
--- a/packages/client/ui-trajectory/src/client/layout.ts
+++ b/packages/client/ui-trajectory/src/client/layout.ts
@@ -12,6 +12,7 @@ import type {
   RequestView,
   ToolResultNode,
 } from '@deepseek-ai/dsh-client-runtime/client'
+import { extractMarkdownPlainText } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   TrajectoryCellProps,
   TrajectorySourceBlock,
@@ -66,6 +67,9 @@ interface TurnBucket {
   groups: LaidGroup[]
 }
 
+const PREVIEW_SOURCE_CHARACTERS = 2_048
+const PREVIEW_OUTPUT_CHARACTERS = 512
+
 type InputNode = Extract<
   ConversationSnapshot['nodes'][number],
   { kind: 'user' | 'steering' | 'context' }
@@ -126,6 +130,7 @@ export function deriveTrajectoryLayout(input: TrajectoryLayoutInput): readonly T
     nodes, partial, runningCalls, requests = [], callSchemas, codeDispatches,
   } = input
   const resultByCall = indexResults(nodes)
+  const emittedCallIds = indexAssistantCallIds(nodes)
   const callStartById = new Map<string, number>()
   for (const result of resultByCall.values()) {
     const startedAt = finiteTime(result.callTime)
@@ -353,7 +358,7 @@ export function deriveTrajectoryLayout(input: TrajectoryLayoutInput): readonly T
       continue
     }
     if (node.kind === 'tool-result') {
-      if (!callEmittedInAssistant(nodes, node.callId)) {
+      if (!emittedCallIds.has(node.callId)) {
         const toolName = node.call?.name
         const laidList: LaidCell[] = [{
           absTime: finiteTime(node.callTime ?? node.time),
@@ -764,12 +769,15 @@ function indexResults(nodes: ConversationSnapshot['nodes']): Map<string, ToolRes
   return map
 }
 
-function callEmittedInAssistant(nodes: ConversationSnapshot['nodes'], callId: string): boolean {
+function indexAssistantCallIds(nodes: ConversationSnapshot['nodes']): ReadonlySet<string> {
+  const ids = new Set<string>()
   for (const node of nodes) {
     if (node.kind !== 'assistant') continue
-    if (node.blocks.some(b => b.kind === 'tool-call' && b.callId === callId)) return true
+    for (const block of node.blocks) {
+      if (block.kind === 'tool-call') ids.add(block.callId)
+    }
   }
-  return false
+  return ids
 }
 
 function collectCallIds(
@@ -849,7 +857,7 @@ function expandSubCalls(
 }
 
 function summarizeCall(name: string, argsRaw: string): string {
-  const args = argsRaw.replace(/\s+/g, ' ').trim()
+  const args = trajectoryPreviewText(argsRaw)
   if (args === '') return name
   return `${name} · ${args}`
 }
@@ -907,5 +915,20 @@ function summarizeContent(content: readonly { type: string; text?: string }[]):
 }
 
 function summarizeText(text: string): string {
-  return text.replace(/\s+/g, ' ').trim()
+  return trajectoryPreviewText(text)
+}
+
+/**
+ * Build a bounded one-line ledger preview without parsing the complete Markdown document.
+ * Full source remains on the cell for the inspector.
+ * @param text - Untrusted message, reasoning, payload, or result text.
+ * @returns A compact preview capped independently from the retained source.
+ */
+export function trajectoryPreviewText(text: string): string {
+  const source = text.slice(0, PREVIEW_SOURCE_CHARACTERS)
+  const compact = extractMarkdownPlainText(source).replace(/\s+/g, ' ').trim()
+  const preview = compact.slice(0, PREVIEW_OUTPUT_CHARACTERS).trimEnd()
+  return source.length < text.length || preview.length < compact.length
+    ? `${preview}…`
+    : preview
 }
diff --git a/packages/client/ui-trajectory/src/client/timeline.ts b/packages/client/ui-trajectory/src/client/timeline.ts
index 2e2227df39..88682b04bb 100644
--- a/packages/client/ui-trajectory/src/client/timeline.ts
+++ b/packages/client/ui-trajectory/src/client/timeline.ts
@@ -15,6 +15,7 @@ export interface TrajectoryTimeRange {
 /** One ledger record projected into the active timeline domain. */
 export interface TrajectoryTimelineSpan extends TrajectoryTimeRange {
   index: number
+  isError: boolean
   kind: TrajectoryCellKind
   label: string
   lane: number
@@ -94,6 +95,7 @@ export function deriveTrajectoryTimeline(
       start: spans.length + offset,
       end: spans.length + offset + 1,
       index: cell.index,
+      isError: cell.isError === true,
       kind: cell.kind,
       label: cell.text,
       lane: laneFor(cell.kind),
@@ -129,6 +131,7 @@ function deriveTimedTimeline(
           : [{
             ...range,
             index: cell.index,
+            isError: cell.isError === true,
             kind: cell.kind,
             label: cell.text,
             lane: laneFor(cell.kind),
diff --git a/packages/client/ui-trajectory/tests/layout.spec.tsx b/packages/client/ui-trajectory/tests/layout.spec.tsx
index c83cffb846..b2271f9e9f 100644
--- a/packages/client/ui-trajectory/tests/layout.spec.tsx
+++ b/packages/client/ui-trajectory/tests/layout.spec.tsx
@@ -176,6 +176,25 @@ describe('deriveTrajectoryLayout', () => {
     })
   })
 
+  it('bounds a long Markdown-like thinking preview while retaining its full detail', () => {
+    const thinking = `# Investigation\n\n**NAVIGATION_OK file_path** ${'- repeated detail '.repeat(1_000)}`
+    const nodes = [{
+      kind: 'assistant', seq: 1, time: 5_000, turn: 1, step: 0,
+      blocks: [{ kind: 'reasoning', text: thinking }],
+    }] as unknown as ConversationSnapshot['nodes']
+
+    const turns = deriveTrajectoryLayout({
+      codeDispatches: new Map(), nodes, partial: null, runningCalls: [],
+    })
+    const message = turns[0]?.groups.flatMap(group => group.cells)
+      .find(cell => cell.kind === 'message')
+
+    expect(message?.text.startsWith('Investigation NAVIGATION_OK file_path')).toBe(true)
+    expect(message?.text.endsWith('…')).toBe(true)
+    expect(message?.text.length).toBeLessThanOrEqual(513)
+    expect(message?.thinkingDetail).toBe(thinking)
+  })
+
   it('advances the duration cursor over context nodes', () => {
     const nodes = [
       { kind: 'user', seq: 1, time: 1_000, content: [{ type: 'text', text: 'hi' }], source: null },
diff --git a/packages/client/ui-trajectory/tests/table.spec.tsx b/packages/client/ui-trajectory/tests/table.spec.tsx
index 8d5b321064..d9959ae30c 100644
--- a/packages/client/ui-trajectory/tests/table.spec.tsx
+++ b/packages/client/ui-trajectory/tests/table.spec.tsx
@@ -83,6 +83,31 @@ describe('TrajectoryTable', () => {
     expect(screen.getByText('15 tok')).toBeTruthy()
   })
 
+  it('keeps long thinking collapsed until the user asks to render it', () => {
+    const thinking = 'private chain '.repeat(1_000)
+    const turns: readonly TrajectoryTurnModel[] = [{
+      turn: 1,
+      groups: [{
+        title: 'Step 1',
+        cells: [{
+          index: 1,
+          kind: 'message',
+          text: 'private chain…',
+          thinkingDetail: thinking,
+          timeSeconds: 1,
+        }],
+      }],
+    }]
+    render(<TrajectoryTable turns={turns} {...FOLD_PROPS} />)
+
+    fireEvent.click(screen.getByRole('row', { name: /ASSISTANT/ }))
+    const toggle = screen.getByRole('button', { name: 'Thinking ...' })
+    expect(screen.queryByText(thinking)).toBeNull()
+
+    fireEvent.click(toggle)
+    expect(toggle.parentElement?.textContent?.length).toBeGreaterThan(thinking.length)
+  })
+
   it('keeps raw HTML tags in a Markdown-derived context preview', () => {
     const html = [
       '<background-task-complete id="trajectory-ui-watch">',
@@ -144,8 +169,53 @@ describe('TrajectoryTable', () => {
     expect(screen.getByText('Pending')).toBeTruthy()
     fireEvent.click(screen.getByRole('row', { name: /TOOL, bash \{"command":"false"\}/ }))
     expect(screen.getByText('Failed')).toBeTruthy()
+    expect(screen.getByText('Failed').className).toContain('error')
     fireEvent.click(screen.getByRole('tab', { name: 'Result' }))
-    expect(screen.getByText('ToolError: non_zero_exit')).toBeTruthy()
+    const errorResult = screen.getByText('ToolError: non_zero_exit')
+    expect(errorResult.closest('[class*="errorPayload"]')).toBeTruthy()
+  })
+
+  it('renders responsive role icons with a custom tooltip', () => {
+    const view = render(<TrajectoryTable turns={TURNS} {...FOLD_PROPS} />)
+    const toolTag = view.container.querySelector<HTMLElement>('[data-role-kind="tool"]')
+
+    expect(toolTag).not.toBeNull()
+    expect(toolTag?.getAttribute('title')).toBeNull()
+    expect(toolTag?.querySelector('[data-role-icon="wrench"]')).toBeTruthy()
+
+    fireEvent.mouseEnter(toolTag as HTMLElement)
+    expect(screen.getByRole('tooltip').textContent).toBe('TOOL')
+    fireEvent.mouseLeave(toolTag as HTMLElement)
+    expect(screen.queryByRole('tooltip')).toBeNull()
+  })
+
+  it('uses information and compression glyphs for injected and compacted context', () => {
+    const turns: readonly TrajectoryTurnModel[] = [{
+      turn: 1,
+      groups: [{
+        title: 'Context',
+        cells: [
+          { index: 1, kind: 'context', text: 'Workspace context', timeSeconds: 0 },
+          { index: 2, kind: 'compacted', text: 'Compacted history', timeSeconds: 0 },
+        ],
+      }],
+    }]
+    const view = render(<TrajectoryTable turns={turns} {...FOLD_PROPS} />)
+
+    expect(view.container.querySelector(
+      '[data-role-kind="context"] [data-role-icon="information"]',
+    )).toBeTruthy()
+    expect(view.container.querySelector(
+      '[data-role-kind="compacted"] [data-role-icon="compacted"]',
+    )).toBeTruthy()
+  })
+
+  it('keeps a compact turn label available for narrow layouts', () => {
+    render(<TrajectoryTable turns={TURNS} {...FOLD_PROPS} />)
+    const turnLabel = screen.getByLabelText('Turn 1')
+
+    expect(turnLabel.textContent).toContain('Turn 1')
+    expect(turnLabel.textContent).toContain('#1')
   })
 
   it('renders a single-text JSON tool result as a JSON tree', () => {
diff --git a/packages/client/ui-trajectory/tests/views.spec.tsx b/packages/client/ui-trajectory/tests/views.spec.tsx
index c79b7407ab..2ba757ecc5 100644
--- a/packages/client/ui-trajectory/tests/views.spec.tsx
+++ b/packages/client/ui-trajectory/tests/views.spec.tsx
@@ -25,6 +25,7 @@ import { createChatStore } from '@deepseek-ai/dsh-client-ui-conversation/src/cli
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-trajectory/client'
 import { apply as nodeApply } from '@deepseek-ai/dsh-client-ui-trajectory'
 import type { TrajectoryTurnModel } from '../src/client/layout.ts'
+import { TrajectoryTimeline } from '../src/client/TrajectoryTimeline.tsx'
 import {
   TrajectoryView, type TrajectoryViewInjected,
 } from '../src/client/TrajectoryView.tsx'
@@ -309,6 +310,44 @@ describe('tab switching in ConversationRoot', () => {
       .toBeNull()
   })
 
+  it('clicking a timeline block clears the range, selects the record, and opens its inspector', async () => {
+    const b = await bench()
+    const view = mount(b.slots)
+    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))
+    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
+    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
+      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
+      toJSON: () => ({}),
+    })
+    const toolSpan = view.container.querySelector<HTMLElement>(
+      '[data-timeline-span="tool"]',
+    )
+    expect(toolSpan).not.toBeNull()
+    const recordIndex = toolSpan?.dataset.timelineRecordIndex
+    expect(recordIndex).toBeTruthy()
+
+    fireEvent.pointerMove(toolSpan as HTMLElement, { clientX: 50, pointerId: 1 })
+    expect(view.container.querySelector('[data-timeline-hover-line]')).toBeNull()
+    expect(toolSpan?.getAttribute('data-hovered')).toBe('true')
+
+    fireEvent.pointerDown(plot, { button: 0, clientX: 5, pointerId: 1 })
+    fireEvent.pointerMove(plot, { clientX: 95, pointerId: 1 })
+    fireEvent.pointerUp(plot, { clientX: 95, pointerId: 1 })
+    expect(view.container.querySelector('tr[data-timeline-focus]')).toBeTruthy()
+
+    fireEvent.pointerDown(toolSpan as HTMLElement, {
+      button: 0, clientX: 50, pointerId: 2,
+    })
+    fireEvent.pointerUp(toolSpan as HTMLElement, { clientX: 50, pointerId: 2 })
+
+    const selectedRow = view.container.querySelector<HTMLElement>(
+      `tr[data-record-index="${recordIndex}"]`,
+    )
+    expect(selectedRow?.getAttribute('aria-selected')).toBe('true')
+    expect(view.container.querySelector('tr[data-timeline-focus]')).toBeNull()
+    expect(screen.getByRole('complementary', { name: 'Event details' })).toBeTruthy()
+  })
+
   it('empty window keeps the toolbar and reports no timing data', async () => {
     const b = await bench(historySnapshot([]))
     mount(b.slots)
@@ -332,6 +371,97 @@ describe('timeline projection', () => {
       ],
     }],
   }] satisfies readonly TrajectoryTurnModel[]
+  const longTurns = [{
+    turn: 1,
+    groups: [{
+      title: 'Step 1',
+      cells: Array.from({ length: 10 }, (_, index) => ({
+        index,
+        kind: 'message' as const,
+        text: `record ${index}`,
+        timeSeconds: 1,
+      })),
+    }],
+  }] satisfies readonly TrajectoryTurnModel[]
+
+  it('pans the zoomed viewport only far enough to reveal a newly selected record', async () => {
+    const onRangeChange = vi.fn()
+    const view = render(
+      <TrajectoryTimeline
+        turns={longTurns}
+        mode="sequence"
+        range={null}
+        onRangeChange={onRangeChange}
+      />,
+    )
+    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
+    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
+      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
+      toJSON: () => ({}),
+    })
+    fireEvent.wheel(plot, { clientX: 50, deltaY: -1_000 })
+
+    view.rerender(
+      <TrajectoryTimeline
+        turns={longTurns}
+        mode="sequence"
+        range={null}
+        selectedIndex={1}
+        onRangeChange={onRangeChange}
+      />,
+    )
+    await vi.waitFor(() => {
+      const domain = view.container.querySelector<HTMLElement>(
+        '[data-timeline-domain]',
+      )
+      expect(domain?.style.getPropertyValue('--trajectory-domain-left')).toBe('-25%')
+    })
+
+    view.rerender(
+      <TrajectoryTimeline
+        turns={longTurns}
+        mode="sequence"
+        range={null}
+        selectedIndex={8}
+        onRangeChange={onRangeChange}
+      />,
+    )
+    await vi.waitFor(() => {
+      const domain = view.container.querySelector<HTMLElement>(
+        '[data-timeline-domain]',
+      )
+      expect(domain?.style.getPropertyValue('--trajectory-domain-left')).toBe('-125%')
+    })
+  })
+
+  it('auto-pans a zoomed viewport while a range drag pushes against an edge', () => {
+    const onRangeChange = vi.fn()
+    render(
+      <TrajectoryTimeline
+        turns={longTurns}
+        mode="sequence"
+        range={null}
+        onRangeChange={onRangeChange}
+      />,
+    )
+    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
+    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
+      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
+      toJSON: () => ({}),
+    })
+    fireEvent.wheel(plot, { clientX: 50, deltaY: -1_000 })
+    fireEvent.pointerDown(plot, { button: 0, clientX: 50, pointerId: 1 })
+    for (let index = 0; index < 24; index++) {
+      fireEvent.pointerMove(plot, { clientX: 99, pointerId: 1 })
+    }
+    fireEvent.pointerUp(plot, { clientX: 99, pointerId: 1 })
+
+    const selectedRange = onRangeChange.mock.calls.at(-1)?.[0] as
+      | { start: number; end: number }
+      | undefined
+    expect(selectedRange).toBeDefined()
+    expect((selectedRange?.end ?? 0) - (selectedRange?.start ?? 0)).toBeGreaterThan(4)
+  })
 
   it('uses equal-width operation slots and stable semantic lanes', () => {
     expect(deriveTrajectoryTimeline(turns)).toEqual({
@@ -339,15 +469,50 @@ describe('timeline projection', () => {
       end: 3,
       spans: [
         {
-          index: 1, kind: 'message', label: 'assistant', lane: 1, start: 0, end: 1,
+          index: 1, isError: false, kind: 'message', label: 'assistant',
+          lane: 1, start: 0, end: 1,
+        },
+        {
+          index: 2, isError: false, kind: 'tool', label: 'bash',
+          lane: 2, start: 1, end: 2,
+        },
+        {
+          index: 3, isError: false, kind: 'user', label: 'unknown',
+          lane: 0, start: 2, end: 3,
         },
-        { index: 2, kind: 'tool', label: 'bash', lane: 2, start: 1, end: 2 },
-        { index: 3, kind: 'user', label: 'unknown', lane: 0, start: 2, end: 3 },
       ],
       turnBoundaries: [{ turn: 1, time: 0 }],
     })
   })
 
+  it('marks error records directly on timeline spans', () => {
+    const errorTurns = [{
+      turn: 1,
+      groups: [{
+        title: 'Step 1',
+        cells: [{
+          index: 1,
+          kind: 'tool' as const,
+          text: 'failed tool',
+          timeSeconds: 0.1,
+          isError: true,
+        }],
+      }],
+    }] satisfies readonly TrajectoryTurnModel[]
+    const view = render(
+      <TrajectoryTimeline
+        turns={errorTurns}
+        mode="sequence"
+        range={null}
+        onRangeChange={() => {}}
+      />,
+    )
+
+    expect(view.container.querySelector(
+      '[data-timeline-span="tool"][data-error="true"]',
+    )).toBeTruthy()
+  })
+
   it('ignores durations and idle gaps while retaining turn boundaries', () => {
     const separatedTurns = [
       {
diff --git a/packages/client/web/package.json b/packages/client/web/package.json
index 91b14f32d7..b235e2accb 100644
--- a/packages/client/web/package.json
+++ b/packages/client/web/package.json
@@ -21,6 +21,7 @@
   "license": "BSD-3-Clause",
   "dependencies": {
     "@deepseek-ai/dsh-client-modules": "workspace:^",
+    "@deepseek-ai/dsh-client-schema-form": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
     "@deepseek-ai/dsh-client-ui-theme": "workspace:^",
diff --git a/packages/client/web/src/platform.ts b/packages/client/web/src/platform.ts
index e51bc20eb9..dc6b9e58ed 100644
--- a/packages/client/web/src/platform.ts
+++ b/packages/client/web/src/platform.ts
@@ -10,6 +10,7 @@ export const PLATFORM_MODULES = [
   '@deepseek-ai/dsh-client-ui-slots',
   '@deepseek-ai/dsh-client-web-react',
   '@deepseek-ai/dsh-client-ui-primitives',
+  '@deepseek-ai/dsh-client-schema-form',
 ] as const
 
 /** One platform module specifier (a seed-table key). */
diff --git a/packages/client/web/src/seed.ts b/packages/client/web/src/seed.ts
index ef66c4d7e3..11f976f4db 100644
--- a/packages/client/web/src/seed.ts
+++ b/packages/client/web/src/seed.ts
@@ -14,6 +14,7 @@ import * as Cordis from 'cordis'
 import * as UiSlots from '@deepseek-ai/dsh-client-ui-slots'
 import * as WebReact from '@deepseek-ai/dsh-client-web-react'
 import * as UiPrimitives from '@deepseek-ai/dsh-client-ui-primitives'
+import * as SchemaForm from '@deepseek-ai/dsh-client-schema-form'
 import type { PlatformModule } from './platform.ts'
 
 /**
@@ -33,5 +34,6 @@ export function getStaticModules(): Record<string, unknown> {
     '@deepseek-ai/dsh-client-ui-slots': UiSlots,
     '@deepseek-ai/dsh-client-web-react': WebReact,
     '@deepseek-ai/dsh-client-ui-primitives': UiPrimitives,
+    '@deepseek-ai/dsh-client-schema-form': SchemaForm,
   } satisfies Record<PlatformModule, unknown>
 }
diff --git a/packages/client/web/tsconfig.json b/packages/client/web/tsconfig.json
index 203ad9c80b..9240c34891 100644
--- a/packages/client/web/tsconfig.json
+++ b/packages/client/web/tsconfig.json
@@ -23,6 +23,9 @@
     {
       "path": "../ui-primitives"
     },
+    {
+      "path": "../schema-form"
+    },
     {
       "path": "../web-react"
     },
diff --git a/packages/context/workspace-context/tests/workspace-context.e2e.ts b/packages/context/workspace-context/tests/workspace-context.e2e.ts
index 9d02cd7c9f..6a8095da0e 100644
--- a/packages/context/workspace-context/tests/workspace-context.e2e.ts
+++ b/packages/context/workspace-context/tests/workspace-context.e2e.ts
@@ -50,7 +50,7 @@ async function harness(): Promise<{ ctx: Context; agent: Agent }> {
   const handle = await ctx.agents.create({
     sessionId: SessionId('workspace-context-e2e-session'),
     meta: { cwd: workdir },
-    agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
   })
   return { ctx, agent: handle.agent }
 }
diff --git a/packages/cordis/tool-cordis/src/api-catalog.ts b/packages/cordis/tool-cordis/src/api-catalog.ts
index 15c5d0b6e1..4d986582d4 100644
--- a/packages/cordis/tool-cordis/src/api-catalog.ts
+++ b/packages/cordis/tool-cordis/src/api-catalog.ts
@@ -264,6 +264,28 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
     ],
   },
+  {
+    key: 'credentials',
+    summary: 'Abstract credential service.',
+    methods: [
+      {
+        signature: 'abstract resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined>',
+        jsDoc: '/**\n * Resolve one reference to its current value. Resolution is per call:\n * consumers re-resolve at each operation and must not cache across\n * operations — that per-operation read is what makes a changed credential\n * reach the next operation without a restart.\n * @param ref - the reference to resolve.\n * @returns the value and its source, or `undefined` while unconfigured.\n */',
+      },
+      {
+        signature: 'abstract describe(ref: CredentialRef): Promise<CredentialInfo>',
+        jsDoc: '/**\n * Describe one reference for configuration surfaces without exposing the\n * value.\n * @param ref - the reference to describe.\n * @returns configured state, supplying source, and writability.\n */',
+      },
+      {
+        signature: 'abstract set(ref: CredentialRef, value: string): Promise<void>',
+        jsDoc: '/**\n * Durably store one value in the provider-managed writable source. Rejects\n * while a read-only source shadows the reference — the write would appear\n * to succeed while resolution keeps returning the shadowing value — and\n * rejects an empty value (use {@link unset}).\n * @param ref - the reference to store.\n * @param value - the non-empty secret value.\n */',
+      },
+      {
+        signature: 'abstract unset(ref: CredentialRef): Promise<void>',
+        jsDoc: '/**\n * Remove one reference from the provider-managed writable source; removing\n * an absent reference is a no-op. Rejects while a read-only source shadows\n * the reference, like {@link set}.\n * @param ref - the reference to remove.\n */',
+      },
+    ],
+  },
   {
     key: 'directoryPicker',
     summary: 'Abstract directory-picking service.',
@@ -383,13 +405,21 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
     summary: 'The abstract `llm` service: an adapter registry plus a streaming model-call surface, interceptable via the `llm/stream` waterfall.',
     methods: [
       {
-        signature: 'registerAdapter(providers: string[], adapter: LlmAdapter): () => void',
-        jsDoc: '/**\n * Register an adapter for the given provider routes. Throws `LlmError` with code\n * `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing).\n * Disposed with the fiber.\n * @param providers - every provider route this adapter should serve.\n * @param adapter - the adapter that streams calls for those providers.\n * @returns the disposer that unregisters all of them.\n */',
+        signature: 'registerAdapter(providers: string[], adapter: LlmAdapter): AdapterRegistrationHandle',
+        jsDoc: '/**\n * Register an adapter for the given provider routes. Throws `LlmError` with code\n * `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing).\n * Disposed with the fiber.\n * @param providers - every provider route this adapter should serve.\n * @param adapter - the adapter that streams calls for those providers.\n * @returns the disposer, carrying {@link AdapterRegistrationHandle.replace}.\n */',
       },
       {
         signature: 'listProviders(): LlmProviderInfo[]',
         jsDoc: '/**\n * Describe provider routes with a registered adapter.\n * @returns detached provider metadata in registration order.\n */',
       },
+      {
+        signature: 'registerConfigurableProviders(entries: readonly LlmConfigurableProvider[]): () => void',
+        jsDoc: '/**\n * Declare provider routes an adapter plugin can activate through\n * configuration. Registration is all-or-nothing: an empty list, invalid\n * entry, or a provider already declared by any registration throws\n * `LlmError` without registering the rest. Disposed with the fiber.\n * @param entries - every configurable provider this plugin owns.\n * @returns the disposer that withdraws all of them.\n */',
+      },
+      {
+        signature: 'listConfigurableProviders(): LlmConfigurableProvider[]',
+        jsDoc: '/**\n * List every declared configurable provider, registered or dormant.\n * @returns detached directory entries in declaration order.\n */',
+      },
       {
         signature: 'providerRetryPolicy(provider: string): ResolvedRetryPolicy',
         jsDoc: '/**\n * Resolve the retry policy captured when one provider route was registered.\n * @param provider - registered provider route to inspect.\n * @returns the provider-owned policy, with normal defaults already resolved.\n */',
@@ -404,7 +434,7 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
       {
         signature: 'async resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise<LlmCallConfig>',
-        jsDoc: '/**\n * Validate a conversation call config against its exact model capability and\n * materialize an adapter-configured default. Unsupported explicit efforts\n * reject before provider I/O; no clamping or aliasing is performed. This\n * standalone query does not bind a later dispatch; use {@link prepareCall}\n * when logging and streaming must share one adapter registration.\n * @param config - provider/model route and optional request controls.\n * @param signal - optional cancellation for adapter-owned capability lookup.\n * @returns a detached config only when a default must be materialized.\n */',
+        jsDoc: '/**\n * Validate a conversation call config against its exact model capability and\n * materialize adapter-configured defaults. Unsupported explicit efforts\n * reject before provider I/O; no clamping or aliasing is performed. This\n * standalone query does not bind a later dispatch; use {@link prepareCall}\n * when logging and streaming must share one adapter registration.\n * @param config - provider/model route and optional request controls.\n * @param signal - optional cancellation for adapter-owned capability lookup.\n * @returns a detached config only when a default must be materialized.\n */',
       },
       {
         signature: 'async prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise<PreparedLlmCall>',
@@ -757,20 +787,24 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         jsDoc: '/**\n * Register a namespace schema and receive its owner scope. The registration\n * is an effect on the calling plugin\'s fiber: disposing that fiber removes\n * the namespace and its observers. An invalid stored section fails the\n * registration itself — the earliest point where the schema can judge it.\n * @param ns - unique namespace; duplicate registration fails loud.\n * @param schema - schemastery schema resolving this namespace\'s value.\n * @param options - composition `base` layer and effect timing.\n * @returns the owner scope for reads, observation, and updates.\n */',
       },
       {
-        signature: 'describe(): SettingsDescriptor[]',
-        jsDoc: '/**\n * Describe every registered namespace for configuration surfaces.\n * @returns one descriptor per registered namespace, in registration order.\n */',
+        signature: 'describe(options?: SettingsDescribeOptions): SettingsDescriptor[]',
+        jsDoc: '/**\n * Describe every registered namespace for configuration surfaces, including\n * the composition `base` and raw user layers so a form can mark which fields\n * the user overrode (presence in `user`) and what a reset returns to.\n * @param options - redaction switch; wire surfaces must redact.\n * @returns one descriptor per registered namespace, in registration order.\n */',
       },
       {
         signature: 'get(ns: SettingsNamespace): unknown',
         jsDoc: '/**\n * Read one registered namespace\'s resolved value.\n * @param ns - the namespace to read.\n * @returns the resolved value, or `undefined` while unregistered.\n */',
       },
       {
-        signature: 'async update(ns: SettingsNamespace, patch: object): Promise<void>',
-        jsDoc: '/**\n * Merge a patch into one registered namespace\'s user layer, validate the\n * resolved candidate, persist through the provider, then commit and emit.\n * A validation failure rejects before anything is persisted. Writes to one\n * namespace are serialized: concurrent updates apply in call order, each\n * merging over the previous write\'s committed section.\n * @param ns - the registered namespace to update.\n * @param patch - plain-object patch over the user section.\n */',
+        signature: 'async update(ns: SettingsNamespace, patch: object, expectedRevision?: number): Promise<void>',
+        jsDoc: '/**\n * Merge a patch into one registered namespace\'s user layer, validate the\n * resolved candidate, persist through the provider, then commit and emit.\n * A validation failure rejects before anything is persisted. Writes to one\n * namespace are serialized: concurrent updates apply in call order, each\n * merging over the previous write\'s committed section.\n * @param ns - the registered namespace to update.\n * @param patch - plain-object patch over the user section.\n * @param expectedRevision - the descriptor `revision` the caller read; a\n *   namespace that moved past it rejects with {@link SettingsConflictError}.\n */',
       },
       {
-        signature: 'async replace(ns: SettingsNamespace, section: object): Promise<void>',
-        jsDoc: '/**\n * Replace one registered namespace\'s user section wholesale, validate,\n * persist, then commit and emit. Keys absent from `section` fall back to the\n * composition `base` and schema defaults — this is the removal/reset path a\n * merge-only patch cannot express (`replace({})` re-inherits everything).\n * @param ns - the registered namespace to replace.\n * @param section - the complete next user section.\n */',
+        signature: 'async replace(ns: SettingsNamespace, section: object, expectedRevision?: number): Promise<void>',
+        jsDoc: '/**\n * Replace one registered namespace\'s user section wholesale, validate,\n * persist, then commit and emit. Keys absent from `section` fall back to the\n * composition `base` and schema defaults — this is the removal/reset path a\n * merge-only patch cannot express (`replace({})` re-inherits everything).\n * @param ns - the registered namespace to replace.\n * @param section - the complete next user section.\n * @param expectedRevision - the descriptor `revision` the caller read; a\n *   namespace that moved past it rejects with {@link SettingsConflictError}.\n */',
+      },
+      {
+        signature: 'async mutate(ns: SettingsNamespace, ops: readonly SettingsPathOp[], expectedRevision?: number): Promise<void>',
+        jsDoc: '/**\n * Apply path-addressed edits to one registered namespace\'s user section,\n * validate, persist, then commit and emit. The ops are applied to the\n * section as it stands when the write reaches the front of the queue, so a\n * caller never has to restate fields it did not touch — and, crucially,\n * cannot delete fields it never saw. This is the write path for any caller\n * holding a redacted view; `replace` remains the wholesale reset.\n * @param ns - the registered namespace to edit.\n * @param ops - ordered path edits; later ops observe earlier ones.\n * @param expectedRevision - the descriptor `revision` the caller read; a\n *   namespace that moved past it rejects with {@link SettingsConflictError}.\n */',
       },
     ],
   },
@@ -1271,6 +1305,13 @@ export const EVENT_API: readonly EventApiEntry[] = [
     jsDoc: '/**\n * A command was registered or unregistered. This is an unfiltered registry\n * notification because a global or scoped change may affect any UI view.\n * Observer failures are contained and cannot veto the registry mutation.\n * @mode emit\n */',
     summary: 'A command was registered or unregistered.',
   },
+  {
+    name: 'credentials/updated',
+    mode: 'emit',
+    signature: '\'credentials/updated\'(ref: CredentialRef): void',
+    jsDoc: '/**\n * Committed change to a provider-managed credential source: a `set`, an\n * `unset`, or an external edit observed in storage. Ambient\n * process-environment changes are not observable and never emit. Listener\n * failures are contained and logged — a sync throw and an async rejection\n * alike — without changing the committed operation\'s outcome, except\n * `INVARIANT`-coded failures, which rethrow after every listener ran;\n * that rethrow reaches the emitter only from synchronous listeners, so\n * invariant checks on this event must not be async functions.\n * @param ref - the reference whose stored value changed.\n * @mode emit\n */',
+    summary: 'Committed change to a provider-managed credential source: a `set`, an `unset`, or an external edit observed in storage.',
+  },
   {
     name: 'domain/changed',
     mode: 'emit',
@@ -1306,6 +1347,13 @@ export const EVENT_API: readonly EventApiEntry[] = [
     jsDoc: '/**\n * Goal mutation accepted by one live agent. The matching context event is\n * already appended or queued in that agent\'s active tool-batch FIFO.\n * Listener failures are contained.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @param agent - agent whose session owns the goal.\n * @param change - fresh current projection or clear tombstone.\n * @mode emit\n */',
     summary: 'Goal mutation accepted by one live agent.',
   },
+  {
+    name: 'llm/adapters-updated',
+    mode: 'emit',
+    signature: '\'llm/adapters-updated\'(): void',
+    jsDoc: '/**\n * The provider topology changed: an adapter registered or unregistered\n * routes, or the configurable-provider directory gained or lost entries.\n * This is a payload-free registry notification fired at each commit point\n * (including registration disposal); consumers re-read `listProviders()`,\n * `listModels()`, or `listConfigurableProviders()` for the new state.\n * Observer failures are contained and cannot veto the registry mutation.\n * @mode emit\n */',
+    summary: 'The provider topology changed: an adapter registered or unregistered routes, or the configurable-provider directory gained or lost entries.',
+  },
   {
     name: 'llm/stream',
     mode: 'waterfall',
@@ -1341,6 +1389,13 @@ export const EVENT_API: readonly EventApiEntry[] = [
     jsDoc: '/**\n * Awaited parallel durability checkpoint: every listener runs and the\n * caller awaits all of them, with no waterfall veto. Dispatch through\n * {@link SessionStore.flush}. Scope-filtered dispatch\n * (`@deepseek-ai/dsh-scope`) reuses the session\'s owner scope.\n * @param session - the session whose buffered events must reach durable storage.\n * @dshScopeScan unsupported\n * @mode parallel\n */',
     summary: 'Awaited parallel durability checkpoint: every listener runs and the caller awaits all of them, with no waterfall veto.',
   },
+  {
+    name: 'settings/document-updated',
+    mode: 'emit',
+    signature: '\'settings/document-updated\'(ns: SettingsNamespace, revision: number): void',
+    jsDoc: '/**\n * One registered namespace\'s RAW user section changed, whether or not the\n * resolved value did. `settings/updated` is the consumer-facing event and\n * stays deep-equal-gated; this one exists for configuration surfaces,\n * which must learn that a field went from inherited to overridden (same\n * resolved value, different meaning) and that their held revision is\n * stale. Listener containment matches `settings/updated`.\n * @param ns - the namespace whose stored section changed.\n * @param revision - the namespace\'s new revision.\n * @mode emit\n */',
+    summary: 'One registered namespace\'s RAW user section changed, whether or not the resolved value did.',
+  },
   {
     name: 'settings/updated',
     mode: 'emit',
@@ -1492,6 +1547,10 @@ export const EVENT_API: readonly EventApiEntry[] = [
 
 /** Shapes of every exported type the SERVICE_API signatures reference (transitively), sorted by name. */
 export const TYPE_API: readonly TypeApiEntry[] = [
+  {
+    name: 'AdapterRegistrationHandle',
+    declaration: 'export interface AdapterRegistrationHandle {\n    (): void;\n    replace(providers: string[]): void;\n}',
+  },
   {
     name: 'Agent',
     declaration: 'export interface Agent {\n    readonly id: SessionId;\n    readonly options: AgentOptions;\n    readonly session: Session;\n    readonly status: AgentStatus;\n    readonly acceptsNextStep: boolean;\n    readonly ctx: Context;\n    send(message: UserMessage, options: SendOptions): void;\n    updateInbox(id: InboxItemId, action: InboxAction): InboxActionResult;\n    cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n    whenIdle(): Promise<void>;\n    followup(message: UserMessage): void;\n    steer(message: UserMessage): void;\n    inject(message: UserMessage): void;\n}',
@@ -1720,6 +1779,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'CreateSessionOptions',
     declaration: 'export interface CreateSessionOptions {\n    readonly seed?: readonly SessionEvent[];\n    readonly meta?: {\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly createdAt?: number;\n        readonly seedLength?: number;\n        readonly delegationDepth?: number;\n    };\n}',
   },
+  {
+    name: 'CredentialInfo',
+    declaration: 'export interface CredentialInfo {\n    configured: boolean;\n    source?: string;\n    writable: boolean;\n}',
+  },
+  {
+    name: 'CredentialRef',
+    declaration: 'export type CredentialRef = Branded<\'CredentialRef\'>;',
+  },
   {
     name: 'DiffCallView',
     declaration: 'export interface DiffCallView {\n    card: \'diff\';\n    title: string;\n    diffs: FileDiff[];\n    locations?: FileLocation[];\n}',
@@ -1794,7 +1861,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'EpochHeader',
-    declaration: 'export interface EpochHeader {\n    config: LlmCallConfig;\n    system?: string;\n    tools?: ToolSchema[];\n}',
+    declaration: 'export interface EpochHeader {\n    config: LlmCallConfig;\n    adapterDefaults?: LlmCallConfigAdapterDefaults;\n    system?: string;\n    tools?: ToolSchema[];\n}',
   },
   {
     name: 'FileDiff',
@@ -1948,6 +2015,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'LlmCallConfig',
     declaration: 'export interface LlmCallConfig {\n    provider: string;\n    model: string;\n    reasoningEffort?: ReasoningEffortId;\n    temperature?: number;\n    maxTokens?: number;\n    stop?: string[];\n}',
   },
+  {
+    name: 'LlmCallConfigAdapterDefaults',
+    declaration: 'export interface LlmCallConfigAdapterDefaults {\n    reasoningEffort?: true;\n    maxTokens?: true;\n}',
+  },
+  {
+    name: 'LlmConfigurableProvider',
+    declaration: 'export interface LlmConfigurableProvider {\n    provider: string;\n    displayName: string;\n    settingsNs: string;\n    settingsPath: readonly string[];\n}',
+  },
   {
     name: 'LlmFailure',
     declaration: 'export interface LlmFailure {\n    readonly message: string;\n    readonly code: string;\n    readonly status?: number;\n    readonly providerRetryAfterMs?: number;\n    readonly requestId?: ProviderRequestId;\n}',
@@ -1974,7 +2049,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'LlmResolvedModelInfo',
-    declaration: 'export interface LlmResolvedModelInfo extends LlmModelInfo {\n    context?: LlmModelContext;\n    reasoning?: LlmModelReasoningInfo;\n}',
+    declaration: 'export interface LlmResolvedModelInfo extends LlmModelInfo {\n    context?: LlmModelContext;\n    defaultMaxTokens?: number;\n    reasoning?: LlmModelReasoningInfo;\n}',
   },
   {
     name: 'Message',
@@ -2006,7 +2081,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'PreparedLlmCall',
-    declaration: 'export interface PreparedLlmCall {\n    readonly config: LlmCallConfig;\n    stream(options: GenerateOptions): AsyncIterable<StreamChunk>;\n}',
+    declaration: 'export interface PreparedLlmCall {\n    readonly config: LlmCallConfig;\n    readonly adapterDefaults: LlmCallConfigAdapterDefaults;\n    stream(options: GenerateOptions): AsyncIterable<StreamChunk>;\n}',
   },
   {
     name: 'PreparedReferencedMessage',
@@ -2140,6 +2215,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'ReasoningEffortId',
     declaration: 'export type ReasoningEffortId = Branded<\'ReasoningEffortId\'>;',
   },
+  {
+    name: 'RedactedSecret',
+    declaration: 'export interface RedactedSecret {\n    path: string[];\n    set: boolean;\n}',
+  },
   {
     name: 'RequestHeaderReason',
     declaration: 'export type RequestHeaderReason = \'initial\' | \'resume\' | \'change\';',
@@ -2148,6 +2227,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'ResolvedAlwaysRetryPolicy',
     declaration: 'export interface ResolvedAlwaysRetryPolicy extends ResolvedRetryBackoff {\n    readonly mode: \'always\';\n}',
   },
+  {
+    name: 'ResolvedCredential',
+    declaration: 'export interface ResolvedCredential {\n    value: string;\n    source: string;\n}',
+  },
   {
     name: 'ResolvedNormalRetryPolicy',
     declaration: 'export interface ResolvedNormalRetryPolicy extends ResolvedRetryBackoff {\n    readonly mode: \'normal\';\n    readonly maxRetries: number;\n    readonly retryableCodes: readonly string[];\n}',
@@ -2412,14 +2495,22 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'SettingsApplies',
     declaration: 'export type SettingsApplies = \'live\' | \'restart\';',
   },
+  {
+    name: 'SettingsDescribeOptions',
+    declaration: 'export interface SettingsDescribeOptions {\n    redactSecrets?: boolean;\n}',
+  },
   {
     name: 'SettingsDescriptor',
-    declaration: 'export interface SettingsDescriptor {\n    ns: SettingsNamespace;\n    schema: unknown;\n    value: unknown;\n    applies: SettingsApplies;\n}',
+    declaration: 'export interface SettingsDescriptor {\n    ns: SettingsNamespace;\n    schema: unknown;\n    value: unknown;\n    revision: number;\n    base?: unknown;\n    user?: unknown;\n    applies: SettingsApplies;\n    secrets?: RedactedSecret[];\n}',
   },
   {
     name: 'SettingsNamespace',
     declaration: 'export type SettingsNamespace = Branded<\'SettingsNamespace\'>;',
   },
+  {
+    name: 'SettingsPathOp',
+    declaration: 'export type SettingsPathOp = {\n    op: \'set\';\n    path: readonly string[];\n    value: unknown;\n} | {\n    op: \'unset\';\n    path: readonly string[];\n};',
+  },
   {
     name: 'SettingsRegisterOptions',
     declaration: 'export interface SettingsRegisterOptions<T> {\n    base?: Partial<T>;\n    applies?: SettingsApplies;\n}',
@@ -2754,7 +2845,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'ToolResultView',
-    declaration: 'export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView;',
+    declaration: 'export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | WebResultView;',
   },
   {
     name: 'ToolRunContext',
@@ -2860,6 +2951,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'WebFetchResult',
     declaration: 'export interface WebFetchResult {\n    readonly url: string;\n    readonly statusCode: number;\n    readonly body: WebFetchBody;\n    readonly truncated: boolean;\n}',
   },
+  {
+    name: 'WebFetchResultView',
+    declaration: 'export interface WebFetchResultView {\n    card: \'web\';\n    kind: \'fetch\';\n    title?: string;\n    url: string;\n    statusCode: number;\n    truncated: boolean;\n}',
+  },
+  {
+    name: 'WebResultView',
+    declaration: 'export type WebResultView = WebSearchResultView | WebFetchResultView;',
+  },
   {
     name: 'WebRoute',
     declaration: 'export interface WebRoute {\n    kind: WebRouteKind;\n    path: string;\n    handler: (req: IncomingMessage, res: ServerResponse) => void | Promise<void>;\n}',
@@ -2880,10 +2979,18 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'WebSearchResult',
     declaration: 'export interface WebSearchResult {\n    readonly content?: string;\n    readonly sources: readonly WebSearchSource[];\n    readonly truncated: boolean;\n}',
   },
+  {
+    name: 'WebSearchResultView',
+    declaration: 'export interface WebSearchResultView {\n    card: \'web\';\n    kind: \'search\';\n    title?: string;\n    sources: WebSource[];\n    answer?: string;\n    truncated: boolean;\n}',
+  },
   {
     name: 'WebSearchSource',
     declaration: 'export interface WebSearchSource {\n    readonly url: string;\n    readonly title?: string;\n    readonly snippet?: string;\n    readonly publishedAt?: string;\n}',
   },
+  {
+    name: 'WebSource',
+    declaration: 'export interface WebSource {\n    url: string;\n    title?: string;\n    snippet?: string;\n    publishedAt?: string;\n}',
+  },
   {
     name: 'WorkflowMeta',
     declaration: 'export interface WorkflowMeta {\n    name: string;\n    description: string;\n    whenToUse?: string;\n    phases?: WorkflowPhase[];\n}',
diff --git a/packages/core/agent-loop/README.i18n.yaml b/packages/core/agent-loop/README.i18n.yaml
index 3a82c693ca..2649d4fde0 100644
--- a/packages/core/agent-loop/README.i18n.yaml
+++ b/packages/core/agent-loop/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/agent-loop/README.md
-README.md: a1617a1ef871f61157e0d70a06d055168170dced
-README.zh.md: 6ba945a41e700331929dabb557802c14256921fb
+README.md: afc00f1ecdd225f22da46b95827259a50c719766
+README.zh.md: 63aaab3b5af32b9bad70d74fbd57c8bd62c2ef7d
diff --git a/packages/core/agent-loop/README.md b/packages/core/agent-loop/README.md
index a1617a1ef8..afc00f1ecd 100644
--- a/packages/core/agent-loop/README.md
+++ b/packages/core/agent-loop/README.md
@@ -65,7 +65,7 @@ The driver owns one agent for its lifetime and runs inside `ctx.agents.withIniti
 
 Every provider call that reaches a successful finish appends exactly one `assistant/message` completion anchor, including content-less calls and `max-tokens` finishes. The anchor records the assembled content as-is, retains exact chunk provenance (`[]` for a stream with no chunks), and includes usage when available; empty content stays out of derived message history.
 
-After `agent/request` returns a provider/model call config, the loop asks `ctx.llm.prepareCall()` to validate any adapter-owned reasoning effort and materialize its configured default under the active turn signal. The prepared call retains the exact adapter registration across this asynchronous resolution, `request/header` logging, and terminal dispatch, so HMR cannot mix one adapter's capability result with another adapter's request. The effective config is logged before dispatch, so a listener can change effort between steps without hidden request drift. A route with no registered adapter preserves the proposed config so an `llm/stream` listener can own and short-circuit it; unhandled terminal dispatch still fails with `NO_ADAPTER`. A new loop instance restores the last effort only when its initial provider/model route exactly matches the logged route; a route change discards that opaque model-owned ID and resolves the new model independently.
+After `agent/request` returns a provider/model call config, the loop asks `ctx.llm.prepareCall()` to validate adapter-owned fields and materialize configured reasoning-effort and output-token defaults under the active turn signal. The prepared call retains the exact adapter registration across this asynchronous resolution, `request/header` logging, and terminal dispatch, so HMR cannot mix one adapter's capability result with another adapter's request. The header records the effective config and which fields came from the adapter. Before the next waterfall, the loop removes those marked fields from the proposal so the current exact route rematerializes its own defaults; unmarked explicit settings persist across steps and route changes. A route with no registered adapter preserves the proposed config so an `llm/stream` listener can own and short-circuit it; unhandled terminal dispatch still fails with `NO_ADAPTER`. A new loop instance applies the same provenance rule when resuming.
 
 Plugin failure ends the current turn, not the loop. Only final adapter dispatch/iteration failures and terminal in-band error or aborted finishes enter `agent/request-error`; middleware, result processing, tools, and other extension failures close directly. Recovery receives the exact live error, immutable provider facts, immutable prior failures, the immutable retry policy of the adapter registration that served the request, and the turn signal after the failed step closes; the policy is absent if no final adapter served it. A handling listener returns `{ kind: 'retry' }`; the loop closes the failed turn with its error and opens one numbered retry turn without an intervening idle notification. Success clears the consecutive history, and an unhandled failure is terminal. AgentLoop owns one cancellation signal for the current admission or turn. An effective `cancel(cause)` clears pending work unless `keepInbox` is set and cooperatively aborts that signal; idle cancellation is a no-op. Durable `turn/end` records `aborted` for `user` and `parent`, while disposal records `disposed`; undispatched model tool calls receive synthetic `tool/call` and `ABORTED_BEFORE_DISPATCH` result pairs. The cancellation cause changes reporting, not how result context finalized after cancellation is handled. Disposal waits for signal-ignoring work before registry removal. The [explicit-cancellation decision](../../../.agents/notes/implemented/architecture/2026-07-16-explicit-turn-cancellation.md) owns the lifecycle and race contract.
 
diff --git a/packages/core/agent-loop/README.zh.md b/packages/core/agent-loop/README.zh.md
index 6ba945a41e..63aaab3b5a 100644
--- a/packages/core/agent-loop/README.zh.md
+++ b/packages/core/agent-loop/README.zh.md
@@ -65,7 +65,7 @@ interface Config {
 
 每次提供方调用成功结束时，都会恰好追加一个 `assistant/message` 完成锚点，包括无内容调用和以 `max-tokens` 结束的调用。该锚点原样记录组装后的内容，保留确切的分片溯源（流没有分片时为 `[]`），并在用量可用时包含用量；空内容不会进入派生消息历史。
 
-在 `agent/request` 返回提供方／模型调用配置后，循环会调用 `ctx.llm.prepareCall()`，在活跃轮次信号的控制下校验由适配器持有的推理（reasoning）强度，并填入其配置默认值。准备完成的调用会在这次异步解析、`request/header` 日志记录和最终分派期间保留同一项确切的适配器注册，因此 HMR（热模块替换）不会把某个适配器的能力解析结果与另一适配器的请求混用。生效配置会在分派前写入日志，因此监听器可以在步骤之间更改推理强度，而不会产生未记录的请求变化。没有已注册适配器的路由会保留原定配置，使 `llm/stream` 监听器可以接管并短路该请求；最终分派仍会以 `NO_ADAPTER` 拒绝未得到处理的路由。新循环实例仅在初始提供方／模型路由与日志路由完全一致时恢复上次的推理强度；路由变化会丢弃由前一模型持有的不透明 ID，并单独解析新模型。
+在 `agent/request` 返回提供方／模型调用配置后，循环会调用 `ctx.llm.prepareCall()`，在活跃轮次信号的控制下校验由适配器持有的字段，并填入配置的推理（reasoning）强度和输出 token 默认值。准备完成的调用会在这次异步解析、`request/header` 日志记录和最终分派期间保留同一项确切的适配器注册，因此 HMR（热模块替换）不会把某个适配器的能力解析结果与另一适配器的请求混用。请求 header 会记录生效配置以及哪些字段来自适配器。下一次 waterfall（瀑布式事件）前，循环会从提议中移除这些带标记字段，使当前精确路由重新填入自身默认值；未带标记的显式设置会跨步骤和路由变化保留。没有已注册适配器的路由会保留原定配置，使 `llm/stream` 监听器可以接管并短路该请求；最终分派仍会以 `NO_ADAPTER` 拒绝未得到处理的路由。新循环实例在恢复时会应用同一来源规则。
 
 插件失败会结束当前轮次，而不是结束循环。只有最终适配器分发／迭代失败以及带内的终止错误或中止结束才进入 `agent/request-error`；中间件、结果处理、工具及其他扩展失败会直接关闭轮次。失败步骤关闭后，恢复逻辑会接收确切的实时错误、不可变的提供方事实、不可变的先前失败、为请求提供服务的适配器注册所对应的不可变重试策略，以及轮次信号；如果没有最终适配器为其提供服务，则该策略缺失。处理失败的监听器返回 `{ kind: 'retry' }`；循环用其错误关闭失败轮次，并在不插入空闲通知的情况下开启一个编号重试轮次。成功会清除连续失败历史；未被处理的失败是终态。AgentLoop 为当前接纳或轮次拥有一个取消信号。有效的 `cancel(cause)` 在未设置 `keepInbox` 时清除待处理工作，并以协作方式中止该信号；空闲取消是空操作。持久 `turn/end` 为 `user` 和 `parent` 记录 `aborted`，dispose（资源释放）则记录 `disposed`；未分发的模型工具调用会收到合成的 `tool/call` 与 `ABORTED_BEFORE_DISPATCH` 结果对。取消原因只改变报告方式，不改变对取消后已定案结果上下文的处理。dispose 会等待忽略信号的工作完成，然后才从注册表移除。[显式取消决策](../../../.agents/notes/implemented/architecture/2026-07-16-explicit-turn-cancellation.md)规定生命周期与竞态契约。
 
@@ -92,7 +92,7 @@ interface Config {
 
 #### Token 影响
 
-每个步骤都会再次计入系统文本与 schema。逐 agent 作用域决定贡献，而权威组装 waterfall（瀑布式事件）可以改变最终请求，并使其监听器负责保持协议连贯。
+每个步骤都会再次计入系统文本与 schema。逐 agent 作用域决定贡献，而权威组装 waterfall 可以改变最终请求，并使其监听器负责保持协议连贯。
 
 #### KV Cache 影响
 
diff --git a/packages/core/agent-loop/src/agent.ts b/packages/core/agent-loop/src/agent.ts
index 1a317aa342..460deded9f 100644
--- a/packages/core/agent-loop/src/agent.ts
+++ b/packages/core/agent-loop/src/agent.ts
@@ -44,7 +44,7 @@ import {
 } from '@deepseek-ai/dsh-llm'
 import type { GenerateOptions, LlmCallConfig, LlmFailure, Message, PreparedLlmCall, ResolvedRetryPolicy } from '@deepseek-ai/dsh-llm'
 import { canonicalHeader, headerEquals } from '@deepseek-ai/dsh-session'
-import type { AssistantMessage, Session, SessionId, TurnEndReason, TurnTrigger, UserMessage } from '@deepseek-ai/dsh-session'
+import type { AssistantMessage, EpochHeader, Session, SessionId, TurnEndReason, TurnTrigger, UserMessage } from '@deepseek-ai/dsh-session'
 import { renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 import type {} from '@deepseek-ai/dsh-tools'
 import { executeToolCalls } from './tool-calls.ts'
@@ -54,6 +54,15 @@ type StepOutcome =
   | { kind: 'completed'; continueTurn: boolean; concluded: boolean; maxTokens: boolean }
   | { kind: 'request-failed'; error: RequestError; failure: LlmFailure; retryPolicy: ResolvedRetryPolicy | undefined }
 
+/** Remove adapter-derived values before plugins propose the next request config. */
+function requestProposal(header: EpochHeader): LlmCallConfig {
+  if (header.adapterDefaults === undefined) return header.config
+  const proposal = { ...header.config }
+  if (header.adapterDefaults.reasoningEffort === true) delete proposal.reasoningEffort
+  if (header.adapterDefaults.maxTokens === true) delete proposal.maxTokens
+  return proposal
+}
+
 /**
  * The concrete {@link Agent}: each `run()` owns one turn and repeats model
  * steps while tools or steering require another request.
@@ -615,19 +624,21 @@ export class ReactLoopAgent implements Agent {
   ): Promise<{ request: GenerateOptions; preparedCall?: PreparedLlmCall }> {
     const { session } = this
 
-    // A loop instance starts from its declared route, restoring only an opaque
-    // effort owned by that exact model. Later steps fold the config it logged.
-    const persistedConfig = session.requestHeader()?.config
+    // A loop instance starts from its declared route, restoring only an explicit
+    // effort owned by that exact model. Later steps re-resolve marked defaults.
+    const persistedHeader = session.requestHeader()
+    const persistedConfig = persistedHeader?.config
     const route = { provider: this.options.provider ?? '', model: this.options.model ?? '' }
     const reasoningEffort = persistedConfig?.provider === route.provider
       && persistedConfig.model === route.model
+      && persistedHeader?.adapterDefaults?.reasoningEffort !== true
       ? persistedConfig.reasoningEffort
       : undefined
     const maxTokens = this.options.maxTokens
     const seedConfig = deepFreeze(structuredClone(
       this.requestHeaderLogged
         // oxlint-disable-next-line typescript/no-non-null-assertion -- the instance logged the header it now folds
-        ? persistedConfig!
+        ? requestProposal(persistedHeader!)
         : {
           ...route,
           ...reasoningEffort === undefined ? {} : { reasoningEffort },
@@ -657,6 +668,7 @@ export class ReactLoopAgent implements Agent {
 
     const header = canonicalHeader({
       config,
+      ...preparedCall === undefined ? {} : { adapterDefaults: preparedCall.adapterDefaults },
       ...system ? { system } : {},
       ...tools.length > 0 ? { tools } : {},
     })
diff --git a/packages/core/agent-loop/tests/mock-adapter.ts b/packages/core/agent-loop/tests/mock-adapter.ts
index e754f1bd90..6e592d9311 100644
--- a/packages/core/agent-loop/tests/mock-adapter.ts
+++ b/packages/core/agent-loop/tests/mock-adapter.ts
@@ -67,6 +67,7 @@ export class MockAdapter extends LlmAdapter {
   constructor(
     private script: (StreamChunk[] | ((options: GenerateOptions) => StreamChunk[]) | 'hang')[],
     private readonly reasoning?: LlmModelReasoningInfo,
+    private readonly defaultMaxTokens?: number,
   ) {
     super()
   }
@@ -80,6 +81,7 @@ export class MockAdapter extends LlmAdapter {
       id: model,
       name: model,
       ...this.reasoning === undefined ? {} : { reasoning: this.reasoning },
+      ...this.defaultMaxTokens === undefined ? {} : { defaultMaxTokens: this.defaultMaxTokens },
     })
   }
 
diff --git a/packages/core/agent-loop/tests/request-cache.e2e.ts b/packages/core/agent-loop/tests/request-cache.e2e.ts
index 6ae0a771d7..287badfc15 100644
--- a/packages/core/agent-loop/tests/request-cache.e2e.ts
+++ b/packages/core/agent-loop/tests/request-cache.e2e.ts
@@ -71,7 +71,7 @@ function waitForIdle(context: Context, agent: Agent): Promise<void> {
 describe.skipIf(!process.env.DEEPSEEK_API_KEY)('log-derived request cache hits (real API)', () => {
   it('every request after the first hits the provider prefix cache', async () => {
     ctx = await loopHarness()
-    const agent = ctx.agentLoop.create(SessionId('cache-e2e'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('cache-e2e'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     // Turn 1: forces a tool call → at least two steps (two model requests).
     agent.followup(createUserMessage({ content: [{ type: 'text', text: 'Look up the key "deploy-color" with the lookup tool and tell me the value.' }], source: { kind: 'user' } }))
diff --git a/packages/core/agent-loop/tests/request-reconstruction.spec.ts b/packages/core/agent-loop/tests/request-reconstruction.spec.ts
index d4150c0521..2fc80c32c1 100644
--- a/packages/core/agent-loop/tests/request-reconstruction.spec.ts
+++ b/packages/core/agent-loop/tests/request-reconstruction.spec.ts
@@ -18,6 +18,13 @@ import AgentLoop from '@deepseek-ai/dsh-agent-loop'
 import { MockAdapter, textResponse, toolCallResponse } from './mock-adapter.ts'
 
 async function harness(adapter: MockAdapter, persona = 'stable base') {
+  return harnessRoutes([['mock', adapter]], persona)
+}
+
+async function harnessRoutes(
+  adapters: readonly (readonly [provider: string, adapter: MockAdapter])[],
+  persona = 'stable base',
+) {
   const ctx = new Context()
   await ctx.plugin(LlmService)
   await ctx.plugin(SessionStore)
@@ -25,7 +32,7 @@ async function harness(adapter: MockAdapter, persona = 'stable base') {
   await ctx.plugin(ToolRegistry)
   await ctx.plugin(AgentRegistry)
   await ctx.plugin(AgentLoop, { agents: [] })
-  ctx.llm.registerAdapter(['mock'], adapter)
+  for (const [provider, adapter] of adapters) ctx.llm.registerAdapter([provider], adapter)
   return ctx
 }
 
@@ -134,6 +141,10 @@ describe('request stability across the loop', () => {
       ReasoningEffortId('high'),
       ReasoningEffortId('max'),
     ])
+    expect(headers.map(event => event.data.header.adapterDefaults)).toEqual([
+      { reasoningEffort: true },
+      undefined,
+    ])
     expect(headers.map(event => event.data.reason)).toEqual(['initial', 'change'])
 
     for (const [model, effort] of [
@@ -158,6 +169,88 @@ describe('request stability across the loop', () => {
     }
   })
 
+  it('logs an adapter-owned maxTokens default before dispatch', async () => {
+    const adapter = new MockAdapter([textResponse('bounded')], undefined, 256_000)
+    const ctx = await harness(adapter)
+    const agent = ctx.agentLoop.create(SessionId('adapter-max-tokens'), {
+      provider: 'mock',
+      model: 'mock',
+    })
+
+    send(agent, 'use the adapter output limit')
+    await waitForIdle(ctx, agent)
+
+    expect(adapter.requests[0]?.maxTokens).toBe(256_000)
+    const header = agent.session.events.find(event => event.type === 'request/header')
+    expect(header?.type === 'request/header' && header.data.header.config.maxTokens).toBe(256_000)
+    expect(header?.type === 'request/header' && header.data.header.adapterDefaults)
+      .toEqual({ maxTokens: true })
+  })
+
+  it('rematerializes the selected adapter maxTokens default after a provider switch', async () => {
+    const deepseek = new MockAdapter([textResponse('deepseek')], undefined, 256_000)
+    const other = new MockAdapter([textResponse('other')], undefined, 8_192)
+    const ctx = await harnessRoutes([
+      ['deepseek', deepseek],
+      ['other', other],
+    ])
+    const agent = ctx.agentLoop.create(SessionId('adapter-max-tokens-switch'), {
+      provider: 'deepseek',
+      model: 'deepseek-model',
+    })
+    ctx.on('agent/request', async (_agent, turn, _step, _signal, next) => {
+      const config = await next()
+      return turn === 2
+        ? { ...config, provider: 'other', model: 'other-model' }
+        : config
+    })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+
+    expect(deepseek.requests[0]?.maxTokens).toBe(256_000)
+    expect(other.requests[0]?.maxTokens).toBe(8_192)
+    const headers = agent.session.events.filter(event => event.type === 'request/header')
+    expect(headers.map(event => event.data.header.config.maxTokens)).toEqual([256_000, 8_192])
+    expect(headers.map(event => event.data.header.adapterDefaults)).toEqual([
+      { maxTokens: true },
+      { maxTokens: true },
+    ])
+  })
+
+  it('preserves an explicit agent maxTokens cap across a provider switch', async () => {
+    const deepseek = new MockAdapter([textResponse('deepseek')], undefined, 256_000)
+    const other = new MockAdapter([textResponse('other')], undefined, 8_192)
+    const ctx = await harnessRoutes([
+      ['deepseek', deepseek],
+      ['other', other],
+    ])
+    const agent = ctx.agentLoop.create(SessionId('explicit-max-tokens-switch'), {
+      provider: 'deepseek',
+      model: 'deepseek-model',
+      maxTokens: 4_096,
+    })
+    ctx.on('agent/request', async (_agent, turn, _step, _signal, next) => {
+      const config = await next()
+      return turn === 2
+        ? { ...config, provider: 'other', model: 'other-model' }
+        : config
+    })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+
+    expect(deepseek.requests[0]?.maxTokens).toBe(4_096)
+    expect(other.requests[0]?.maxTokens).toBe(4_096)
+    const headers = agent.session.events.filter(event => event.type === 'request/header')
+    expect(headers.map(event => event.data.header.config.maxTokens)).toEqual([4_096, 4_096])
+    expect(headers.map(event => event.data.header.adapterDefaults)).toEqual([undefined, undefined])
+  })
+
   it('keeps exact-model resolution, request logging, and dispatch on one adapter registration', async () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
diff --git a/packages/core/agent/README.i18n.yaml b/packages/core/agent/README.i18n.yaml
index 78a933294a..c2f6e1516f 100644
--- a/packages/core/agent/README.i18n.yaml
+++ b/packages/core/agent/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/agent/README.md
-README.md: 6bd5279ace93b6d2569833be6f102c854105c2eb
-README.zh.md: cdbb0c0b70124e0037a0f7a7a03ddedf1e3b78d3
+README.md: 0b55381ee484eb0044b1ebb88cfd137a987a9b3e
+README.zh.md: 9fb0100fb2c212627b8c14dad0aada0f73d11c10
diff --git a/packages/core/agent/README.md b/packages/core/agent/README.md
index 6bd5279ace..0b55381ee4 100644
--- a/packages/core/agent/README.md
+++ b/packages/core/agent/README.md
@@ -14,7 +14,7 @@ Tracks live agents and carries the initiating Agent through asynchronous driver
 
 The scoped-registration surface: `Agent.ctx` is the agent's scope context (`dsh-scope`, key = the agent) — register tools/sections/variables/listeners through it for that agent alone, all unwound on disposal. `agentEvents(ctx, agent)` is the fused dispatcher for ordinary agent-subject operations (carrier + injected subject in one move); its notification mode invokes every listener and contains both synchronous throws and returned-promise rejections. The registry lifecycle pair reuses one stable routing carrier. `assembleContextFor(agent)` builds the per-agent assembly context (`agent` + `scope` together). `installAgentLlmTarget(agentCtx, target)` snapshots a mutable provider/model/reasoning-effort selection during prompt assembly, applies the route to prompt variables, and applies the complete target to request routing for one step; an absent selected effort clears an inherited effort so the target uses adapter/provider defaults. `CreateAgentOptions.setup(agentCtx)` and `ResumeAgentOptions.setup(agentCtx)` compose a fresh or resumed agent's scoped world while both objects remain unpublished. Setup is trusted, composition-only same-process code: drive the agent only after creation resolves.
 
-`AgentOptions` supplies the initial provider/model route and an optional positive `maxTokens` output cap. The concrete loop records the cap in the request header and applies it to each conversation-model request; callers that omit it leave provider defaults in control.
+`AgentOptions` supplies the initial provider/model route and an optional positive `maxTokens` output cap. The concrete loop resolves any exact-model adapter default, records the effective cap in the request header, and applies it to each conversation-model request; an explicit Agent option wins, while omission leaves the adapter or provider route default in control.
 
 - `ctx.agents.register(agent: Agent): () => void` — record an **already-constructed** agent. Disposed with the calling fiber.
 - Advanced ordered lifecycle: `enter(agent, owner): () => void` enforces `agent.id === agent.session.id`, performs the authoritative ID collision check, and inserts without announcing; `owner` explicitly records the live creator-agent relation (or `undefined` for a root), independently of durable session lineage. `announce(agent)` emits `agent/created` exactly once. A detach requested synchronously by a creation listener is deferred until that dispatch unwinds, and every detach checks the captured entry object, so a stale capability cannot delete a later same-ID replacement. The async factory uses this split; ordinary plugins use `register()`.
diff --git a/packages/core/agent/README.zh.md b/packages/core/agent/README.zh.md
index cdbb0c0b70..9fb0100fb2 100644
--- a/packages/core/agent/README.zh.md
+++ b/packages/core/agent/README.zh.md
@@ -14,7 +14,7 @@ Agent 接口、注册表、进程本地发起方作用域，以及 `agent/*` 事
 
 带作用域的注册接口：`Agent.ctx` 是 agent 的作用域上下文（`dsh-scope`，键 = 该 agent）。通过它注册工具／段／变量／监听器，只对该 agent 生效，并在 dispose（资源释放）时全部撤销。`agentEvents(ctx, agent)` 是普通 agent 主体操作的融合分发器（一次完成载体 + 注入主体）；其通知 mode 会调用每个监听器，并同时收容同步抛出和返回 Promise 的拒绝。注册表生命周期对复用一个稳定路由载体。`assembleContextFor(agent)` 构建按 agent 的组装上下文（同时包含 `agent` + `scope`）。`installAgentLlmTarget(agentCtx, target)` 在提示词组装期间快照可变的提供方／模型／推理（reasoning）强度选择，将路由应用到提示词变量，并将完整目标应用到一个步骤的请求路由；如果没有选定推理强度，则会清除继承的推理强度，使该目标使用适配器／提供方默认值。`CreateAgentOptions.setup(agentCtx)` 和 `ResumeAgentOptions.setup(agentCtx)` 在新建或恢复的 agent 尚未发布时，组合其带作用域的世界。Setup 是受信任、仅用于组合的同进程代码：只有创建完成后才能驱动 agent。
 
-`AgentOptions` 提供初始的提供方／模型路由，以及可选的正数 `maxTokens` 输出上限。实体循环会把该上限记录到请求 header，并应用到每次对话模型请求；调用方省略时由提供方默认值控制。
+`AgentOptions` 提供初始的提供方／模型路由，以及可选的正数 `maxTokens` 输出上限。实体循环会解析确切模型的适配器默认值，把生效上限记录到请求 header，并应用到每次对话模型请求；显式 Agent 选项优先，省略时由适配器或提供方路由默认值控制。
 
 - `ctx.agents.register(agent: Agent): () => void`：记录一个 **已经构造完成** 的 agent。随调用 fiber dispose。
 - 高级有序生命周期：`enter(agent, owner): () => void` 强制 `agent.id === agent.session.id`，执行权威 ID 冲突检查，并在不通知的情况下插入；`owner` 显式记录实时创建方 agent 关系（根 agent 为 `undefined`），与持久会话谱系无关。`announce(agent)` 恰好发出一次 `agent/created`。创建监听器同步请求的 detach 会延后到该次分发结束；每次 detach 都会检查捕获的条目对象，因此陈旧能力无法删除后续使用同一 ID 的替代项。异步工厂使用这一拆分；普通插件使用 `register()`。
diff --git a/packages/core/session/README.i18n.yaml b/packages/core/session/README.i18n.yaml
index 51f8aad777..3adbc81cc3 100644
--- a/packages/core/session/README.i18n.yaml
+++ b/packages/core/session/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/session/README.md
-README.md: 9fa6cf5251d480be9d2388bdb32393fa2827168c
-README.zh.md: 5170d5d4b362a0f19ff6953e1636adef9aa7e8b8
+README.md: 132e627387aff54381d10e87a52dc1440d0a5b56
+README.zh.md: edf94f765b81a81dfe39662e967cd6dfdca140fa
diff --git a/packages/core/session/README.md b/packages/core/session/README.md
index 9fa6cf5251..132e627387 100644
--- a/packages/core/session/README.md
+++ b/packages/core/session/README.md
@@ -64,7 +64,7 @@ Providers stream token-sized deltas, so a raw log stores hundreds of `assistant/
 
 ### Request-header reconstruction (`request-header.ts`)
 
-`request/header` records a full canonical snapshot of the non-history request envelope with reason `initial`, `resume`, or `change`. `foldRequestHeader()` selects the latest snapshot; legacy delta events and the removed `fallback` reason are rejected. See the [reconstructable-requests Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md).
+`request/header` records a full canonical snapshot of the non-history request envelope with reason `initial`, `resume`, or `change`. Its optional `adapterDefaults` map marks effective `reasoningEffort` or `maxTokens` values materialized by exact-model resolution, allowing the next request proposal to distinguish them from explicit conversation settings. `foldRequestHeader()` selects the latest snapshot; legacy delta events and the removed `fallback` reason are rejected. See the [reconstructable-requests Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md).
 
 A `user/message` stores the complete `UserMessage` directly, including the identity created before routing or prompt admission. It renders its `content` verbatim whether it is a direct human prompt, a synthetic injection, or an admitted goal round; its typed `source` is the only channel that tells them apart and carries any domain-specific durable facts. `assistant/message`, `tool/result`, and `steering/message` likewise store complete message values. Turn execution remains enclosed by `turn/start` and `turn/end`, while an idle injection may append and flush a `user/message` between turns without running the model.
 
diff --git a/packages/core/session/README.zh.md b/packages/core/session/README.zh.md
index 5170d5d4b3..edf94f765b 100644
--- a/packages/core/session/README.zh.md
+++ b/packages/core/session/README.zh.md
@@ -64,7 +64,7 @@
 
 ### 请求头重建（`request-header.ts`）
 
-`request/header` 记录非历史请求封装的完整规范快照，其原因为 `initial`、`resume` 或 `change`。`foldRequestHeader()` 选择最新快照；旧版增量事件和已移除的 `fallback` 原因会被拒绝。详见[可重建请求 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)。
+`request/header` 记录非历史请求封装的完整规范快照，其原因为 `initial`、`resume` 或 `change`。其可选 `adapterDefaults` 映射会标记由精确模型解析填入的生效 `reasoningEffort` 或 `maxTokens` 值，使下一次请求提议能够将它们与显式对话设置区分开。`foldRequestHeader()` 选择最新快照；旧版增量事件和已移除的 `fallback` 原因会被拒绝。详见[可重建请求 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)。
 
 `user/message` 会直接存储完整的 `UserMessage`，其中包括路由或提示词准入前创建的标识。无论它是直接人类提示词、合成注入，还是已准入的 Goal Round，都会原样呈现其 `content`；带类型的 `source` 是区分三者的唯一通道，并携带各领域专有的持久事实。`assistant/message`、`tool/result` 和 steering（中途引导）对应的 `steering/message` 也会存储完整的消息值。轮次执行仍由 `turn/start` 与 `turn/end` 包围，而空闲注入可以在轮次之间追加并刷新一条 `user/message`，无需运行模型。
 
diff --git a/packages/core/session/src/index.ts b/packages/core/session/src/index.ts
index d285041974..403fa25b32 100644
--- a/packages/core/session/src/index.ts
+++ b/packages/core/session/src/index.ts
@@ -201,13 +201,18 @@ function assertCurrentLlmShape(event: Record<string, unknown>, index: number): v
     : undefined
   if (event['type'] === 'request/header') {
     const header = record?.['header']
-    const config = typeof header === 'object' && header !== null ? (header as Record<string, unknown>)['config'] : undefined
+    const headerRecord = typeof header === 'object' && header !== null && !Array.isArray(header)
+      ? header as Record<string, unknown>
+      : undefined
+    const config = headerRecord?.['config']
     if (!hasProviderModel(config)) throw new Error(`seed request/header at index ${index} lacks provider/model`)
-    const reasoningEffort = (config as Record<string, unknown>)['reasoningEffort']
+    const configRecord = config as Record<string, unknown>
+    const reasoningEffort = configRecord['reasoningEffort']
     if (reasoningEffort !== undefined
       && (typeof reasoningEffort !== 'string' || reasoningEffort.length === 0)) {
       throw new Error(`seed request/header at index ${index} has an invalid reasoningEffort`)
     }
+    assertAdapterDefaults(headerRecord?.['adapterDefaults'], configRecord, index)
   }
   const type = event['type']
   if (type !== 'user/message' && type !== 'assistant/message'
@@ -215,6 +220,26 @@ function assertCurrentLlmShape(event: Record<string, unknown>, index: number): v
   assertMessageEventShape(event, `seed ${type} at index ${index}`)
 }
 
+/** Validate adapter-default provenance imported from a durable request header. */
+function assertAdapterDefaults(
+  value: unknown,
+  config: Record<string, unknown>,
+  index: number,
+): void {
+  if (value === undefined) return
+  if (typeof value !== 'object' || value === null || Array.isArray(value)) {
+    throw new Error(`seed request/header at index ${index} has invalid adapterDefaults`)
+  }
+  const defaults = value as Record<string, unknown>
+  const allowed = new Set(['reasoningEffort', 'maxTokens'])
+  if (Object.keys(defaults).some(key => !allowed.has(key))
+    || Object.values(defaults).some(marker => marker !== true)
+    || defaults['reasoningEffort'] === true && config['reasoningEffort'] === undefined
+    || defaults['maxTokens'] === true && config['maxTokens'] === undefined) {
+    throw new Error(`seed request/header at index ${index} has invalid adapterDefaults`)
+  }
+}
+
 /** Validate only the event-specific invariants needed to safely replay a message. */
 function assertMessageEventShape(event: Record<string, unknown>, subject: string): void {
   const type = event['type']
diff --git a/packages/core/session/src/request-header.ts b/packages/core/session/src/request-header.ts
index ad2b61faed..ef67569139 100644
--- a/packages/core/session/src/request-header.ts
+++ b/packages/core/session/src/request-header.ts
@@ -19,8 +19,12 @@ import type { EpochHeader, SessionEvent } from './types.ts'
  * @returns the canonical header.
  */
 export function canonicalHeader(header: EpochHeader): EpochHeader {
+  const adapterDefaults = header.adapterDefaults
   return {
     config: header.config,
+    ...adapterDefaults?.reasoningEffort === true || adapterDefaults?.maxTokens === true
+      ? { adapterDefaults }
+      : {},
     ...header.system !== undefined && header.system.length > 0 ? { system: header.system } : {},
     ...header.tools !== undefined && header.tools.length > 0 ? { tools: header.tools } : {},
   }
@@ -38,7 +42,12 @@ function sameSchema(a: ToolSchema, b: ToolSchema): boolean {
  * @returns whether config, system, and tools all match.
  */
 export function headerEquals(a: EpochHeader, b: EpochHeader): boolean {
-  if (!callConfigEquals(a.config, b.config) || a.system !== b.system) return false
+  if (
+    !callConfigEquals(a.config, b.config)
+    || a.adapterDefaults?.reasoningEffort !== b.adapterDefaults?.reasoningEffort
+    || a.adapterDefaults?.maxTokens !== b.adapterDefaults?.maxTokens
+    || a.system !== b.system
+  ) return false
   const at = a.tools ?? []
   const bt = b.tools ?? []
   return at.length === bt.length && at.every((tool, i) => sameSchema(tool, bt[i] as ToolSchema))
diff --git a/packages/core/session/src/types.ts b/packages/core/session/src/types.ts
index ebebb95c7c..1f7a8583d6 100644
--- a/packages/core/session/src/types.ts
+++ b/packages/core/session/src/types.ts
@@ -3,6 +3,7 @@ import type {
   AssistantMessage,
   CallId,
   LlmCallConfig,
+  LlmCallConfigAdapterDefaults,
   LlmFailure,
   MessageSource,
   StreamChunk,
@@ -163,6 +164,8 @@ export interface TodoItem {
 export interface EpochHeader {
   /** The conversation's call configuration (provider, model, reasoning effort, and sampling scalars). */
   config: LlmCallConfig
+  /** Effective config fields materialized from the exact adapter rather than proposed by a caller. */
+  adapterDefaults?: LlmCallConfigAdapterDefaults
   /** Rendered system prompt text; absent for a system-less request. */
   system?: string
   /** Assembled tool schemas; absent for a tool-less request. */
diff --git a/packages/core/session/tests/request-header.spec.ts b/packages/core/session/tests/request-header.spec.ts
index 53c76a5298..373fb2a127 100644
--- a/packages/core/session/tests/request-header.spec.ts
+++ b/packages/core/session/tests/request-header.spec.ts
@@ -14,9 +14,24 @@ function tool(name: string, description = 'd'): ToolSchema {
 
 describe('canonicalHeader', () => {
   it('normalizes empty optional fields to absence and preserves populated fields', () => {
-    expect(canonicalHeader({ config: CONFIG, system: '', tools: [] })).toEqual({ config: CONFIG })
-    const full = canonicalHeader({ config: CONFIG, system: 's', tools: [tool('a')] })
-    expect(full).toEqual({ config: CONFIG, system: 's', tools: [tool('a')] })
+    expect(canonicalHeader({
+      config: CONFIG,
+      adapterDefaults: {},
+      system: '',
+      tools: [],
+    })).toEqual({ config: CONFIG })
+    const full = canonicalHeader({
+      config: { ...CONFIG, maxTokens: 256_000 },
+      adapterDefaults: { maxTokens: true },
+      system: 's',
+      tools: [tool('a')],
+    })
+    expect(full).toEqual({
+      config: { ...CONFIG, maxTokens: 256_000 },
+      adapterDefaults: { maxTokens: true },
+      system: 's',
+      tools: [tool('a')],
+    })
   })
 })
 
@@ -30,6 +45,14 @@ describe('headerEquals', () => {
       ...base,
       config: { ...base.config, reasoningEffort: ReasoningEffortId('high') },
     })).toBe(false)
+    expect(headerEquals(
+      { ...base, config: { ...base.config, maxTokens: 256_000 } },
+      {
+        ...base,
+        config: { ...base.config, maxTokens: 256_000 },
+        adapterDefaults: { maxTokens: true },
+      },
+    )).toBe(false)
     expect(headerEquals(base, { ...base, system: 'other' })).toBe(false)
     expect(headerEquals(base, { ...base, tools: [] })).toBe(false)
     expect(headerEquals(base, { ...base, tools: [tool('a', 'changed')] })).toBe(false)
diff --git a/packages/core/session/tests/session.spec.ts b/packages/core/session/tests/session.spec.ts
index 7b7e2fae28..0d8663ea6c 100644
--- a/packages/core/session/tests/session.spec.ts
+++ b/packages/core/session/tests/session.spec.ts
@@ -403,6 +403,40 @@ describe('Session', () => {
     }
   })
 
+  it('round-trips adapter-default provenance and rejects invalid durable values', () => {
+    const valid = {
+      type: 'request/header',
+      seq: 0,
+      time: 1,
+      data: {
+        header: {
+          config: {
+            provider: 'mock',
+            model: 'model',
+            maxTokens: 256_000,
+          },
+          adapterDefaults: { maxTokens: true },
+        },
+        reason: 'initial',
+      },
+    } as const
+    expect(new Session(SessionId('adapter-defaults'), [valid]).events[0]).toEqual(valid)
+
+    for (const adapterDefaults of [
+      null,
+      [],
+      { unknown: true },
+      { maxTokens: false },
+      { reasoningEffort: true },
+    ]) {
+      const invalid = structuredClone(valid) as unknown as SessionEvent
+      if (invalid.type !== 'request/header') throw new Error('test fixture must be a request header')
+      invalid.data.header.adapterDefaults = adapterDefaults as never
+      expect(() => new Session(SessionId('invalid-adapter-defaults'), [invalid]))
+        .toThrow('seed request/header at index 0 has invalid adapterDefaults')
+    }
+  })
+
   it('isolates the log from mutation through a derived message (append-only contract)', () => {
     const session = new Session(SessionId('s4'))
     session.append('user/message', createUserMessage({
diff --git a/packages/core/tools/README.i18n.yaml b/packages/core/tools/README.i18n.yaml
index 429e76ed6a..e888160b0f 100644
--- a/packages/core/tools/README.i18n.yaml
+++ b/packages/core/tools/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/tools/README.md
-README.md: e5adb153e77d7a2d8c4068b016194ab6abb6473e
-README.zh.md: c67a2f2ee4ac2a9d587c6efbf2b5c60d14fc58c2
+README.md: e7f395f8c1d6417db856e590f5267cf6887e4d12
+README.zh.md: acb4c047bf86e36c828882ff751d4be1f627f99e
diff --git a/packages/core/tools/README.md b/packages/core/tools/README.md
index e5adb153e7..e7f395f8c1 100644
--- a/packages/core/tools/README.md
+++ b/packages/core/tools/README.md
@@ -108,7 +108,7 @@ Optional `isConcurrencySafe(args)` receives typed, softly validated arguments. E
 Tools optionally own pure `presentCall()` and `presentResult()` render intents, so UIs do not special-case tool names:
 
 - Call views are `{ card: 'generic', title, kind?, rawInput?, content?, locations? }`, `{ card: 'terminal', title, description?, cwd? }`, or `{ card: 'diff', title, diffs, locations? }`.
-- Result views are `{ card: 'generic', title?, content? }`, `{ card: 'terminal', title?, output?, exitCode?, signal? }`, or `{ card: 'diff', title?, diffs }`.
+- Result views are `{ card: 'generic', title?, content? }`, `{ card: 'terminal', title?, output?, exitCode?, signal? }`, `{ card: 'diff', title?, diffs }`, or `{ card: 'web', kind: 'search' | 'fetch', title?, … }` (a completed web retrieval; the `kind` arms carry the structured search sources or the fetch summary, and a UI without the `web` capability falls back to the raw result content).
 
 Returning `undefined` selects generic fallback. Presenters depend only on their arguments and the durable result because UIs call them during live streaming and log replay. `output.presentationMeta(args, value)` derives JSON metadata for direct surface calls; that metadata persists with `tool/result` and returns to `presentResult`, while the canonical value itself remains execution-local and is never replayed. Nested Code dispatches do not compute metadata. `defineTool` soft-validates older logged arguments and falls back instead of crashing replay. `dsh-tool-bash` and `dsh-tool-fs` are the reference implementations; the [canonical-output Agent Note](../../../.agents/notes/implemented/architecture/2026-07-20-canonical-tool-output-contract.md) owns the value/presentation split and the [render-intent Agent Note](../../../.agents/notes/implemented/architecture/2026-07-02-tool-render-intent-union.md) owns card vocabulary.
 
diff --git a/packages/core/tools/README.zh.md b/packages/core/tools/README.zh.md
index c67a2f2ee4..acb4c047bf 100644
--- a/packages/core/tools/README.zh.md
+++ b/packages/core/tools/README.zh.md
@@ -108,7 +108,7 @@ ctx.tools.register(defineTool({
 工具可以选择拥有纯 `presentCall()` 和 `presentResult()` 呈现意图，使 UI 无需特殊处理工具名称：
 
 - 调用视图为 `{ card: 'generic', title, kind?, rawInput?, content?, locations? }`、`{ card: 'terminal', title, description?, cwd? }` 或 `{ card: 'diff', title, diffs, locations? }`。
-- 结果视图为 `{ card: 'generic', title?, content? }`、`{ card: 'terminal', title?, output?, exitCode?, signal? }` 或 `{ card: 'diff', title?, diffs }`。
+- 结果视图为 `{ card: 'generic', title?, content? }`、`{ card: 'terminal', title?, output?, exitCode?, signal? }`、`{ card: 'diff', title?, diffs }` 或 `{ card: 'web', kind: 'search' | 'fetch', title?, … }`（已完成的 web 检索；`kind` 各分支携带结构化的搜索来源或抓取摘要，不具备 `web` 能力的 UI 回退到原始结果内容）。
 
 返回 `undefined` 会选择通用回退。呈现器只依赖其参数和持久结果，因为 UI 会在实时流式输出和日志回放期间调用它们。`output.presentationMeta(args, value)` 为直接接口调用派生 JSON 元数据；该元数据随 `tool/result` 持久化并传回 `presentResult`，而规范值本身仍只存在于执行局部，绝不会回放。嵌套 Code 分发不会计算元数据。`defineTool` 会软验证较旧的日志参数并回退，而不会使回放崩溃。`dsh-tool-bash` 与 `dsh-tool-fs` 是参考实现；[规范输出 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-20-canonical-tool-output-contract.md) 规定值／呈现拆分，[呈现意图 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-02-tool-render-intent-union.md) 规定卡片词汇。
 
diff --git a/packages/core/tools/src/index.ts b/packages/core/tools/src/index.ts
index 2caaaa8276..e825a1a0dc 100644
--- a/packages/core/tools/src/index.ts
+++ b/packages/core/tools/src/index.ts
@@ -82,6 +82,10 @@ export type {
   GenericResultView,
   TerminalResultView,
   DiffResultView,
+  WebResultView,
+  WebSearchResultView,
+  WebFetchResultView,
+  WebSource,
 } from './presentation.ts'
 
 declare module 'cordis' {
diff --git a/packages/core/tools/src/presentation.ts b/packages/core/tools/src/presentation.ts
index 17b88b822f..d1e7d552b5 100644
--- a/packages/core/tools/src/presentation.ts
+++ b/packages/core/tools/src/presentation.ts
@@ -125,7 +125,7 @@ export interface DiffCallView {
  * `ToolDefinition.presentResult`; omitting the method keeps the pending
  * title and renders the raw result content.
  */
-export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView
+export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | WebResultView
 
 /**
  * The default completed card: an optional replacement title and reformatted
@@ -176,3 +176,84 @@ export interface DiffResultView {
   /** The change to show, in file order — applied contextual hunks, or a whole-file diff when there is no before-image. */
   diffs: FileDiff[]
 }
+
+/**
+ * One citeable source in a completed {@link WebSearchResultView}, the faithful
+ * projection of one web-search source. The presentation projection of `dsh-web`'s
+ * `WebSearchSource`: that seam type is the authoritative shape (core cannot depend
+ * on the web seam, so the two are declared separately and MUST evolve together).
+ * A web tool projects this shape through `output.presentationMeta` because the
+ * render text cannot losslessly carry it (see the web-result-card Agent Note); its
+ * `presentResult` reads it back.
+ */
+export interface WebSource {
+  /** The source URL. */
+  url: string
+  /** The source title, when the provider returned one. */
+  title?: string
+  /** A short excerpt or summary, when the provider returned one. */
+  snippet?: string
+  /** Publication/crawl timestamp as a provider-supplied ISO-8601 string, when present. */
+  publishedAt?: string
+}
+
+/**
+ * A completed web retrieval rendered as a structured card by a capable UI. Set
+ * by a web tool whose call retrieves from the web (`web_search`, `web_fetch`).
+ * One `kind`-tagged union carries both shapes because both are web retrieval and
+ * a UI renders them with one component family; a UI switches on `kind`. An
+ * incapable UI falls back to the raw `tool/result` content (this view carries no
+ * `content` copy — see the web-result-card Agent Note). This is the result-time
+ * analogue of the `web_search`/`web_fetch` calls' generic call views
+ * (`kind: 'search'`/`'fetch'`); those tools keep their generic pending card and
+ * add only this completed card.
+ *
+ * The `kind` field here is this union's own discriminant, NOT a
+ * {@link ToolCallKind}: the two values deliberately match the tools' pending
+ * `ToolCallKind` (`'search'`/`'fetch'`) so a call and its result read as one
+ * category, but a new arm is a union edit plus a consumer branch, not any
+ * arbitrary `ToolCallKind` value.
+ */
+export type WebResultView = WebSearchResultView | WebFetchResultView
+
+/**
+ * The completed state of a `web_search` call: the structured sources the model
+ * cited, an optional provider answer, and whether the source list was cut to the
+ * result cap. A capable UI renders the sources as a citation list; a UI without
+ * the `web` capability falls back to the raw `tool/result` content.
+ */
+export interface WebSearchResultView {
+  card: 'web'
+  kind: 'search'
+  /** Replacement title for the completed call. Omit to keep the pending-state title. */
+  title?: string
+  /** The faithful, structured sources — the field render text cannot losslessly carry. */
+  sources: WebSource[]
+  /** The provider-generated answer text, when any. */
+  answer?: string
+  /** True when the seam cut the source list to honor the result cap. */
+  truncated: boolean
+}
+
+/**
+ * The completed state of a `web_fetch` call: the fetched URL, its HTTP status,
+ * and whether the content was cut. The body itself is already markdown in the
+ * raw `tool/result` content, so this card carries only the retrieval summary and
+ * a UI without the `web` capability falls back to that content.
+ */
+export interface WebFetchResultView {
+  card: 'web'
+  kind: 'fetch'
+  /** Replacement title for the completed call. Omit to keep the pending-state title. */
+  title?: string
+  /** The final URL after allowed redirects. */
+  url: string
+  /** HTTP status code of the fetched response. */
+  statusCode: number
+  /**
+   * True when the provider capped the decoded body, or the output cap or a
+   * pre-conversion source cut trimmed the rendered text (the effective
+   * truncation the model-facing text also reflects).
+   */
+  truncated: boolean
+}
diff --git a/packages/credentials/README.i18n.yaml b/packages/credentials/README.i18n.yaml
new file mode 100644
index 0000000000..e8b35ba48e
--- /dev/null
+++ b/packages/credentials/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/credentials/README.md
+README.md: 1d450cbeef84750fa57ca0151563c496aed0ce12
+README.zh.md: 843230c3cebf35f234d3ad812165b16ea734678b
diff --git a/packages/credentials/README.md b/packages/credentials/README.md
new file mode 100644
index 0000000000..1d450cbeef
--- /dev/null
+++ b/packages/credentials/README.md
@@ -0,0 +1,14 @@
+# credentials/
+
+English | [中文](README.zh.md)
+
+The credential capability seam, as three-package shape dictates (interface / implementation / consumers):
+
+| Package | Role |
+|---|---|
+| [`credentials/`](credentials/README.md) | Abstract `ctx.credentials`: branded `CredentialRef` references, per-operation `resolve`, UI-safe `describe`, fail-loud `set`/`unset`, the `credentials/updated` commit event |
+| [`credentials-local/`](credentials-local/README.md) | File/environment provider: the live process environment (read-only, wins) layered over `$DSH_HOME/.env` (writable, byte-preserving line edits, hot-reloaded) |
+
+Configuration files carry *references* to secrets (`apiKeyEnv: DEEPSEEK_API_KEY`), never the secrets: the settings document stays safe to sync and render, and rotating a value touches no configuration. The LLM adapters are the first consumers — they resolve their reference once per model request, which is what makes a key stored moments ago reach the very next request without restarting anything.
+
+The seam shape leaves room for keyring-, helper-command-, and KMS-backed providers.
diff --git a/packages/credentials/README.zh.md b/packages/credentials/README.zh.md
new file mode 100644
index 0000000000..843230c3ce
--- /dev/null
+++ b/packages/credentials/README.zh.md
@@ -0,0 +1,14 @@
+# credentials/
+
+[English](README.md) | 中文
+
+凭据能力 seam，按三包形态的要求组织（接口／实现／消费方）：
+
+| 包 | 角色 |
+|---|---|
+| [`credentials/`](credentials/README.md) | 抽象 `ctx.credentials`：品牌化 `CredentialRef` 引用、按操作 `resolve`、对 UI 安全的 `describe`、响亮失败的 `set`/`unset`，以及 `credentials/updated` 提交事件 |
+| [`credentials-local/`](credentials-local/README.md) | 文件／环境 provider：活跃进程环境（只读、优先）叠加在 `$DSH_HOME/.env`（可写、保字节行级编辑、热重载）之上 |
+
+配置文件携带的是对机密的*引用*（`apiKeyEnv: DEEPSEEK_API_KEY`），绝不携带机密本身：设置文档可以放心同步与渲染，轮换值不触碰任何配置。LLM 适配器是第一批消费方——它们每次模型请求解析一次引用，正因如此，片刻前存入的密钥无需重启任何组件即可作用于紧随其后的下一次请求。
+
+seam 形状为 keyring、辅助命令与 KMS 后端的 provider 留有余地。
diff --git a/packages/credentials/credentials-local/README.i18n.yaml b/packages/credentials/credentials-local/README.i18n.yaml
new file mode 100644
index 0000000000..89a8576683
--- /dev/null
+++ b/packages/credentials/credentials-local/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/credentials/credentials-local/README.md
+README.md: 126140b10719dc6f7bc458a118ba1feb1f440270
+README.zh.md: c22575115ab44b5e86a847ffe8f1fa1a795b580d
diff --git a/packages/credentials/credentials-local/README.md b/packages/credentials/credentials-local/README.md
new file mode 100644
index 0000000000..126140b107
--- /dev/null
+++ b/packages/credentials/credentials-local/README.md
@@ -0,0 +1,54 @@
+# dsh-credentials-local
+
+English | [中文](README.zh.md)
+
+File-backed [credentials](../credentials/README.md) provider: two layers, one honest precedence.
+
+| Layer | Source id | Writable | Wins |
+|---|---|---|---|
+| Live process environment | `env` | no | always |
+| `$DSH_HOME/.env` document | `file` | yes (`set`/`unset`) | otherwise |
+
+The environment wins because a launch-time override (`DEEPSEEK_API_KEY=… dsh`, CI secrets, a dev shell sourcing the repo `.env`) is operator intent for this run — and because it cannot be edited from inside, it must be *visibly* read-only: `describe()` reports `source: 'env', writable: false`, and `set`/`unset` reject instead of writing a change the reader would never see. Resolution reads `process.env` live and never writes it back.
+
+## Config
+
+| Field | Default | Meaning |
+|---|---|---|
+| `path` | `<harness home>/.env` | Credentials document location. |
+| `dshHome` | `$DSH_HOME` or `~/.dsh` | Harness home used when `path` is omitted. |
+| `watch` | `true` | Hot-publish external edits. |
+| `debounceMs` | `100` | Watcher write-settle window. |
+
+## The document
+
+dotenv format, parsed with `dotenv` and edited by a physical-line editor that preserves every byte it does not own: `set` rewrites the first assignment of its key in place with that line's own ending (dropping later duplicates, which dotenv's last-wins reading would otherwise let override the edit), `unset` removes only the owning line, and comments, unrelated lines, CRLF endings, and the continuation lines of another key's quoted multi-line value all survive verbatim. Every write first re-reads the document under the cross-process writer lock of [`dsh-atomic-write`](../../util/atomic-write/README.md) and publishes anything it had not observed, then commits atomically with mode `0600` under an owner-only (`0700`) directory — so a concurrent writer or an external edit inside the watcher's debounce window is folded in rather than overwritten.
+
+Values are rendered in the narrowest style dotenv reads back verbatim — bare, then single-quoted (fully literal), then double-quoted (only without backslashes, which double-quote reading expands). A value no style can represent, and any entry that already spans multiple physical lines, fails loud instead of being corrupted silently. An empty stored value is absent, per the seam rule.
+
+## Hot reload
+
+External edits publish `credentials/updated` per changed reference after the snapshot is replaced **wholesale** — an entry deleted on disk never lingers in memory. The provider's own writes are recognized by content and publish exactly their one commit event. An unreadable document at runtime keeps the last good snapshot and warns; an absent file is an empty store; an unreadable file at boot fails loud. Keys that are not POSIX identifiers are preserved file content the seam cannot address.
+
+## Security boundary
+
+The document is `0600` under a `0700` directory, which stops other OS users — **not** the model. Tool processes (bash, the filesystem tools) run as the same user, so under the shipped `danger-full-access` default they can read this file exactly like any other file the user owns, and no sandbox mode singles it out. What the harness does hold to is narrower: it never hands the model a resolved path to the document, and never loads it into the process environment (see [app-boot's Personal config](../../ui/app-boot/README.md#personal-config)), so reaching the value takes a deliberate read of a path the agent was not given.
+
+That is discretion, not a boundary. A deployment that must keep provider keys away from its own agent cannot get there with file permissions; an OS-keychain provider — a store the model's processes cannot read at all — is the deferred answer and belongs beside this provider as a sibling package.
+
+## Model Experience
+
+Indirectly, through the consuming LLM adapters: stored values authorize their provider requests, and the adapter owns every model-visible surface.
+
+#### KV Cache effect
+
+No direct invalidation; credentials never enter a request prefix.
+
+## Known Limitations and Deferred Work
+
+- **Multi-line entries refuse `set`/`unset`** — the line editor will not rewrite an entry it would corrupt; `describe` reports them `writable: false` and edits must go to the file directly.
+- **Same-reference concurrent writes are last-write-wins** — the writer lock and the read-modify-write keep concurrent writers from dropping each other's entries, but two writers editing one reference still resolve to the later write; there is no revision check.
+- **A same-UID process can read the document** — see [Security boundary](#security-boundary): only a confining sandbox mode denies it, and an OS-keychain provider is deferred.
+- **Unrepresentable values fail loud** — control characters, or a mix of both quote styles with backslashes, cannot round-trip the dotenv line format.
+- **Environment changes are invisible** — `process.env` is read live per resolution, but no event can announce a change there.
+- **Atomic, not crash-durable** — inherited from `dsh-atomic-write`; the store re-reads on boot.
diff --git a/packages/credentials/credentials-local/README.zh.md b/packages/credentials/credentials-local/README.zh.md
new file mode 100644
index 0000000000..c22575115a
--- /dev/null
+++ b/packages/credentials/credentials-local/README.zh.md
@@ -0,0 +1,54 @@
+# dsh-credentials-local
+
+[English](README.md) | 中文
+
+文件型[凭据](../credentials/README.md) provider：两层来源，一条诚实的优先级。
+
+| 层 | 来源 id | 可写 | 优先 |
+|---|---|---|---|
+| 活跃进程环境 | `env` | 否 | 恒定优先 |
+| `$DSH_HOME/.env` 文档 | `file` | 是（`set`/`unset`） | 其余情况 |
+
+环境优先，因为启动时覆盖（`DEEPSEEK_API_KEY=… dsh`、CI 机密、加载了仓库 `.env` 的开发 shell）代表本次运行的操作者意图——而它无法从进程内部修改，就必须*可见地*只读：`describe()` 报告 `source: 'env', writable: false`，`set`/`unset` 直接拒绝，而不是写下一个读取方永远看不到的变更。解析实时读取 `process.env`，绝不写回。
+
+## 配置
+
+| 字段 | 默认值 | 含义 |
+|---|---|---|
+| `path` | `<harness home>/.env` | 凭据文档位置。 |
+| `dshHome` | `$DSH_HOME` 或 `~/.dsh` | `path` 缺省时使用的 harness home。 |
+| `watch` | `true` | 热发布外部编辑。 |
+| `debounceMs` | `100` | watcher 写入稳定窗口。 |
+
+## 文档本身
+
+dotenv 格式，用 `dotenv` 解析；写回用物理行级编辑器，保留一切不属于本次编辑的字节：`set` 原位改写该键的第一条赋值行、沿用该行自身的行尾（丢弃后续重复行——dotenv 按最后一条生效，重复行会反过来覆盖这次编辑），`unset` 只删除所属行，注释、无关行、CRLF 行尾，以及另一个键的引号多行值的续行，都逐字保留。每次写入都先在 [`dsh-atomic-write`](../../util/atomic-write/README.md) 的跨进程写锁下重读文档、把此前未观察到的一切发布出去，再在仅属主可访问（`0700`）的目录下以 `0600` 权限原子提交——因此并发写入者、或落在 watcher 防抖窗口内的外部编辑会被并入，而不是被覆盖。
+
+值按 dotenv 能逐字读回的最窄样式渲染——裸值，其次单引号（完全字面），再次双引号（仅限无反斜杠，双引号读取会展开转义）。任何样式都无法表示的值，以及已经跨越多个物理行的条目，都会响亮失败而不是被静默破坏。空的存储值等于不存在（seam 规则）。
+
+## 热重载
+
+外部编辑在快照**整体替换**后按变更引用逐个发布 `credentials/updated`——磁盘上删掉的条目绝不在内存滞留。provider 自己的写入按内容识别，只发布属于该次提交的一个事件。运行期文档不可读时保留最后可用快照并告警；文件不存在即空存储；启动时不可读则响亮失败。非 POSIX 标识符的键属于被保留的文件内容，seam 无法寻址。
+
+## 安全边界
+
+文档在 `0700` 目录下以 `0600` 权限存放，这挡得住其他 OS 用户，**挡不住**模型。工具进程（bash、文件系统工具）以同一用户身份运行，因此在出厂默认的 `danger-full-access` 下，它们读这个文件与读该用户拥有的任何其他文件毫无二致，也没有任何沙箱模式会把它单独挑出来。harness 真正守住的更窄：它绝不把该文档的解析后路径交给模型，也绝不把它载入进程环境（见 [app-boot 的个人配置](../../ui/app-boot/README.md#personal-config)），因此要拿到这个值，需要刻意去读一条并未交给 agent 的路径。
+
+这是审慎，不是边界。必须让提供方密钥远离自身 agent 的部署无法靠文件权限做到；OS 钥匙串 provider——一个模型的进程根本读不到的存储——才是延后的答案，它应当作为平级包与本 provider 并列。
+
+## Model Experience
+
+经由消费它的 LLM 适配器间接生效：存储的值为适配器的提供方请求授权，每个模型可见面都归适配器所有。
+
+#### KV Cache effect
+
+无直接失效；凭据绝不进入请求前缀。
+
+## Known Limitations and Deferred Work
+
+- **多行条目拒绝 `set`/`unset`**——行编辑器不改写会被它破坏的条目；`describe` 把它们报为 `writable: false`，编辑必须直接落到文件上。
+- **同一引用的并发写入是后写胜出**——写锁加读-改-写让并发写入者不会丢掉彼此的条目，但两个写入者编辑同一个引用时仍以较后的写入为准；没有修订检查。
+- **同 UID 进程可以读取该文档**——见[安全边界](#security-boundary)：只有受限沙箱模式会拒绝它，OS 钥匙串 provider 仍是延后项。
+- **无法表示的值响亮失败**——控制字符，或同时混用两种引号又含反斜杠的值，无法在 dotenv 行格式中往返。
+- **环境变化不可见**——每次解析实时读取 `process.env`，但那里的变化不可能发出事件。
+- **原子但不保证崩溃持久**——继承自 `dsh-atomic-write`；存储在启动时重新读取。
diff --git a/packages/credentials/credentials-local/package.json b/packages/credentials/credentials-local/package.json
new file mode 100644
index 0000000000..0b8924d7f2
--- /dev/null
+++ b/packages/credentials/credentials-local/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "@deepseek-ai/dsh-credentials-local",
+  "description": "File-backed credentials provider ($DSH_HOME/.env under the live process environment) for the DeepSeek Harness",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/types/**/*.d.ts",
+    "lib/types/**/*.d.ts.map",
+    "src"
+  ],
+  "license": "BSD-3-Clause",
+  "peerDependencies": {
+    "@deepseek-ai/dsh-atomic-write": "^0.0.1",
+    "@deepseek-ai/dsh-credentials": "^0.0.1",
+    "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "@deepseek-ai/dsh-paths": "^0.0.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "dependencies": {
+    "chokidar": "^4.0.3",
+    "dotenv": "^17.2.0",
+    "schemastery": "^3.18.0"
+  },
+  "devDependencies": {
+    "@deepseek-ai/dsh-atomic-write": "workspace:^",
+    "@deepseek-ai/dsh-credentials": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-paths": "workspace:^",
+    "cordis": "^4.0.0-rc.7"
+  }
+}
diff --git a/packages/credentials/credentials-local/src/index.ts b/packages/credentials/credentials-local/src/index.ts
new file mode 100644
index 0000000000..c62d4411fa
--- /dev/null
+++ b/packages/credentials/credentials-local/src/index.ts
@@ -0,0 +1,464 @@
+/**
+ * File-backed credentials provider layering the live process environment over
+ * a `$DSH_HOME/.env` document. The environment is authoritative and read-only
+ * (a launch-time override must win, and must be visibly read-only rather than
+ * silently shadow writes); the file is the provider-managed writable source:
+ * every write re-reads the document under a cross-process writer lock before
+ * rewriting only its own line — preserving every other byte, physical line
+ * endings and quoted multi-line values included — external edits hot-publish
+ * through the seam, and each reload replaces the snapshot wholesale so a
+ * deleted entry never lingers in memory.
+ * @module @deepseek-ai/dsh-credentials-local
+ */
+
+import { Context, Service } from 'cordis'
+import z from 'schemastery'
+import { watch as chokidarWatch } from 'chokidar'
+import { mkdir, readFile } from 'node:fs/promises'
+import { dirname, join, resolve } from 'node:path'
+import { parse } from 'dotenv'
+import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+import { resolveDshHome } from '@deepseek-ai/dsh-paths'
+import { Credentials, credentialRef } from '@deepseek-ai/dsh-credentials'
+import type { CredentialInfo, CredentialRef, ResolvedCredential } from '@deepseek-ai/dsh-credentials'
+
+/** Plugin config: file location and hot-reload behavior. */
+export interface Config {
+  /** Credentials document path; defaults to `.env` under the harness home. */
+  path?: string
+  /** Harness home used when `path` is omitted; defaults to `$DSH_HOME` or `~/.dsh`. */
+  dshHome?: string
+  /** Watch the document and hot-publish external edits; defaults to true. */
+  watch?: boolean
+  /** Watcher write-settle window in milliseconds; defaults to 100. */
+  debounceMs?: number
+}
+
+/** Fully resolved provider parameters; defaulting happens here, never inline. */
+interface ResolvedSpec {
+  filename: string
+  watch: boolean
+  debounceMs: number
+}
+
+/**
+ * Resolve the runtime spec from plugin config: an explicit `path` wins,
+ * otherwise the document lives at `<harness home>/.env`.
+ * @param config - raw plugin config.
+ * @returns the resolved file location and watch behavior.
+ */
+export function resolveSpec(config: Config): ResolvedSpec {
+  return {
+    filename: resolve(config.path ?? join(resolveDshHome(config.dshHome), '.env')),
+    watch: config.watch ?? true,
+    debounceMs: config.debounceMs ?? 100,
+  }
+}
+
+/** Whether a filesystem error means absence; every non-ENOENT failure must surface. */
+function isENOENT(error: unknown): boolean {
+  return (error as NodeJS.ErrnoException | null)?.code === 'ENOENT'
+}
+
+/** Values that survive a dotenv round-trip without quoting. */
+const BARE_VALUE = /^[A-Za-z0-9_@%+:,./-]+$/
+
+/** Whether a value contains C0 control characters (newlines included) no dotenv style reads back. */
+function hasControlCharacters(value: string): boolean {
+  for (const char of value) {
+    if (char.charCodeAt(0) < 0x20) return true
+  }
+  return false
+}
+
+/**
+ * Render one `KEY=value` line in the narrowest style dotenv reads back
+ * verbatim: bare, then single quotes (fully literal), then double quotes
+ * (safe only without backslashes, which double-quote reading expands).
+ * A value no style can represent fails loud instead of corrupting silently.
+ */
+function renderLine(ref: CredentialRef, value: string): string {
+  if (BARE_VALUE.test(value)) return `${ref}=${value}`
+  if (hasControlCharacters(value)) {
+    throw new Error(`credentials-local: the value for "${ref}" contains control characters the .env line format cannot represent`)
+  }
+  if (!value.includes('\'')) return `${ref}='${value}'`
+  if (!value.includes('"') && !value.includes('\\')) return `${ref}="${value}"`
+  throw new Error(`credentials-local: the value for "${ref}" mixes quoting no .env style can represent; edit the file directly`)
+}
+
+/** Split text into physical lines with their terminators attached. */
+function physicalLines(text: string): string[] {
+  return text.length === 0 ? [] : text.split(/(?<=\n)/)
+}
+
+/** One physical line's content without its terminator. */
+function lineContent(line: string): string {
+  if (line.endsWith('\r\n')) return line.slice(0, -2)
+  if (line.endsWith('\n')) return line.slice(0, -1)
+  return line
+}
+
+/** One physical line's terminator (empty on a final unterminated line). */
+function lineTerminator(line: string): string {
+  return line.slice(lineContent(line).length)
+}
+
+/** An assignment line: optional export, a POSIX identifier, `=`, the value part. */
+const ASSIGNMENT = /^\s*(?:export\s+)?([A-Za-z_][A-Za-z0-9_]*)\s*=(.*)$/
+
+/** Quote characters dotenv reads across physical lines. */
+const MULTILINE_QUOTES = ['\'', '"', '`']
+
+/**
+ * The quote character an assignment's value part opens without closing on its
+ * own line — the following physical lines are that value's continuation, not
+ * assignments — or `undefined` for a single-line value.
+ */
+function opensMultiline(valuePart: string): string | undefined {
+  const trimmed = valuePart.trimStart()
+  const quote = trimmed[0]
+  if (quote === undefined || !MULTILINE_QUOTES.includes(quote)) return undefined
+  const rest = trimmed.slice(1)
+  const body = quote === '"' ? rest.replaceAll('\\"', '') : rest
+  return body.includes(quote) ? undefined : quote
+}
+
+/** Whether a continuation line closes the given quote. */
+function closesQuote(content: string, quote: string): boolean {
+  const body = quote === '"' ? content.replaceAll('\\"', '') : content
+  return body.includes(quote)
+}
+
+/**
+ * Replace, insert, or delete one reference's assignment while preserving
+ * every other byte: untouched lines keep their exact content and terminators
+ * (CRLF included), and the physical lines inside another key's quoted
+ * multi-line value are never mistaken for assignments. The first matching
+ * assignment is rewritten in place with its own line ending; later duplicates
+ * drop (dotenv reads the last one, so a surviving duplicate would override
+ * the edit); an insert appends in the document's dominant ending style.
+ */
+function upsertLine(text: string | undefined, ref: CredentialRef, rendered: string | undefined): string {
+  const lines = physicalLines(text ?? '')
+  const dominant = lines.some(line => line.endsWith('\r\n')) ? '\r\n' : '\n'
+  const out: string[] = []
+  let placed = false
+  let pendingQuote: string | undefined
+  for (const line of lines) {
+    const content = lineContent(line)
+    if (pendingQuote !== undefined) {
+      // Inside a quoted multi-line value: never an assignment, always kept.
+      if (closesQuote(content, pendingQuote)) pendingQuote = undefined
+      out.push(line)
+      continue
+    }
+    const match = ASSIGNMENT.exec(content)
+    if (match === null) {
+      out.push(line)
+      continue
+    }
+    const [, key, valuePart] = match
+    if (key !== ref) {
+      /* v8 ignore next -- the value group is `(.*)`, which always participates; the fallback only satisfies noUncheckedIndexedAccess */
+      pendingQuote = opensMultiline(valuePart ?? '')
+      out.push(line)
+      continue
+    }
+    // The write path refuses multi-line targets before rendering, so the
+    // matched assignment is single-line and drops or rewrites wholesale.
+    if (rendered !== undefined && !placed) {
+      out.push(`${rendered}${lineTerminator(line) === '' ? dominant : lineTerminator(line)}`)
+      placed = true
+    }
+  }
+  if (rendered !== undefined && !placed) {
+    const last = out[out.length - 1]
+    if (last !== undefined && lineTerminator(last) === '') {
+      out[out.length - 1] = `${last}${dominant}`
+    }
+    out.push(`${rendered}${dominant}`)
+  }
+  return out.join('')
+}
+
+/** File-backed credentials provider (`$DSH_HOME/.env`). */
+export class CredentialsLocal extends Credentials {
+  /* jscpd:ignore-start -- deliberate config-surface and lifecycle symmetry with
+     settings-local (prefer symmetry for parallel values); extracting the shared
+     shape would couple the two providers' teardown semantics across packages. */
+  static Config: z<Config> = z.object({
+    path: z.string(),
+    dshHome: z.string(),
+    watch: z.boolean().default(true),
+    debounceMs: z.number().min(0).default(100),
+  })
+
+  private readonly spec: ResolvedSpec
+  /**
+   * Raw text of the last read or persisted document; `undefined` while the
+   * file is absent. Watcher events whose content equals this cache are no-ops,
+   * which is also the self-write suppression.
+   */
+  private text: string | undefined
+  /** Parsed document snapshot; replaced wholesale on every reload. */
+  private values = new Map<string, string>()
+  /**
+   * Single exclusive operation chain: watcher reloads and line edits run one
+   * at a time in queue order (settled tail), so an edit can never render from
+   * text a concurrent reload is busy replacing.
+   */
+  private operations: Promise<void> = Promise.resolve()
+  /** Set at dispose: refuse new writes and let in-flight work no-op. */
+  private closed = false
+
+  /** Opaque read of {@link closed}: control flow cannot narrow it across awaits. */
+  private isClosed(): boolean {
+    return this.closed
+  }
+  /* jscpd:ignore-end */
+
+  constructor(ctx: Context, public config: Config) {
+    super(ctx)
+    // Programmatic construction may bypass Schemastery normalization; resolve
+    // the same defaults in one explicit step either way.
+    this.spec = resolveSpec(config)
+  }
+
+  async* [Service.init](): AsyncGenerator<() => Promise<void> | void, void, void> {
+    yield async () => {
+      // Drain: refuse new operations, then settle the queued ones so disposal
+      // completes only once storage is quiescent.
+      this.closed = true
+      await this.operations
+    }
+    await this.loadInitial()
+    if (!this.spec.watch) return
+    /* jscpd:ignore-start -- same watcher discipline as settings-local by design:
+       the serialized-refresh and quiesce-on-dispose shape is the reviewed
+       lifecycle contract, not accidental repetition. */
+    const watcher = chokidarWatch(this.spec.filename, {
+      ignoreInitial: true,
+      awaitWriteFinish: {
+        stabilityThreshold: this.spec.debounceMs,
+        pollInterval: Math.max(1, Math.min(this.spec.debounceMs, 10)),
+      },
+    })
+    watcher.on('all', () => {
+      if (this.closed) return
+      this.queueRefresh()
+    })
+    watcher.on('ready', () => {
+      // The initial load raced the watcher's own setup: a change written
+      // between that read and the watcher becoming active never fires an
+      // event. One reconcile at ready closes the gap.
+      if (this.closed) return
+      this.queueRefresh()
+    })
+    watcher.on('error', (error) => {
+      this.ctx.logger.warn('credentials-local: watcher error on %s', this.spec.filename)
+      this.ctx.logger.warn(error)
+    })
+    yield async () => {
+      // Quiesce: stop accepting events, close the watcher, then wait out any
+      // queued or in-flight operation so nothing publishes after disposal.
+      this.closed = true
+      await watcher.close()
+      await this.operations
+    }
+    /* jscpd:ignore-end */
+  }
+
+  override resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined> {
+    const env = process.env[ref]
+    if (env !== undefined && env.length > 0) return Promise.resolve({ value: env, source: 'env' })
+    const stored = this.values.get(ref)
+    if (stored !== undefined && stored.length > 0) return Promise.resolve({ value: stored, source: 'file' })
+    return Promise.resolve(undefined)
+  }
+
+  override describe(ref: CredentialRef): Promise<CredentialInfo> {
+    const env = process.env[ref]
+    if (env !== undefined && env.length > 0) {
+      return Promise.resolve({ configured: true, source: 'env', writable: false })
+    }
+    const stored = this.values.get(ref)
+    if (stored !== undefined && stored.length > 0) {
+      // A quoted multi-line value resolves fine but the line editor refuses to
+      // rewrite it, so writability must say what set() would actually do.
+      return Promise.resolve({ configured: true, source: 'file', writable: !stored.includes('\n') })
+    }
+    return Promise.resolve({ configured: false, writable: true })
+  }
+
+  override async set(ref: CredentialRef, value: string): Promise<void> {
+    if (value.length === 0) {
+      throw new Error(`credentials-local: an empty value cannot be stored for "${ref}"; use unset`)
+    }
+    await this.write(ref, value)
+  }
+
+  override async unset(ref: CredentialRef): Promise<void> {
+    await this.write(ref, undefined)
+  }
+
+  /* jscpd:ignore-start -- the operation-chain and reload lifecycle is the same
+     reviewed contract as settings-local, deliberately mirrored (prefer symmetry
+     for parallel values); the two providers own different documents and
+     failure policies, so extracting the shape would couple their teardown
+     semantics across packages for a handful of lines. */
+  /** Queue one exclusive document operation behind every earlier one. */
+  private enqueue<T>(operation: () => Promise<T>): Promise<T> {
+    const task = this.operations.then(operation)
+    this.operations = task.then(() => undefined, () => undefined)
+    return task
+  }
+
+  /** Queue a reload; only an invariant violation escaping the fan-out can reject it. */
+  private queueRefresh(): void {
+    void this.enqueue(() => this.refresh()).catch((error: unknown) => {
+      // Only an invariant violation escaping the update fan-out can reject a
+      // refresh; keep the operation queue alive and surface it as an error so
+      // one poisoned commit cannot silently end hot reloading forever.
+      this.ctx.logger.error('credentials-local: reload commit failed at %s', this.spec.filename)
+      this.ctx.logger.error(error)
+    })
+  }
+  /* jscpd:ignore-end */
+
+  /** Queue one line edit; entry checks reject early, the queue re-judges them at run time. */
+  private async write(ref: CredentialRef, value: string | undefined): Promise<void> {
+    const verb = value === undefined ? 'unset' : 'set'
+    if (this.isClosed()) {
+      throw new Error(`credentials-local is disposed: cannot ${verb} "${ref}"`)
+    }
+    this.assertUnshadowed(ref, verb)
+    return this.enqueue(async () => {
+      if (this.isClosed()) {
+        throw new Error(`credentials-local was disposed before the queued "${ref}" ${verb} ran`)
+      }
+      // Re-judged at run time: the environment may have changed while queued.
+      this.assertUnshadowed(ref, verb)
+      // The writer lock's exclusive create needs the parent to exist; 0700
+      // because the harness home holds user-private data.
+      await mkdir(dirname(this.spec.filename), { recursive: true, mode: 0o700 })
+      await withFileLock(this.spec.filename, async () => {
+        // Read-modify-write: fold in any on-disk state this process has not
+        // observed yet — an external edit still inside the watcher debounce
+        // window, a change the watcher missed, or another process's write —
+        // so the line edit below can never resurrect a stale document.
+        await this.reconcileFromDisk()
+        const existing = this.values.get(ref)
+        if (value === undefined && existing === undefined) return
+        if (existing !== undefined && existing.includes('\n')) {
+          throw new Error(
+            `credentials-local: "${ref}" is a multi-line entry this line editor would corrupt; edit ${this.spec.filename} directly`,
+          )
+        }
+        const nextText = upsertLine(this.text, ref, value === undefined ? undefined : renderLine(ref, value))
+        // 0600: a document holding secrets is never world-readable.
+        await writeFileAtomic(this.spec.filename, nextText, { mode: 0o600, dirMode: 0o700 })
+        this.text = nextText
+        if (value === undefined) this.values.delete(ref)
+        else this.values.set(ref, value)
+        // After the commit: a broken observer must never make the durable
+        // write look failed (an INVARIANT failure still rethrows).
+        this.notifyUpdated(ref)
+      }, {
+        onStaleBreak: (lockPath) => {
+          this.ctx.logger.warn('credentials-local: breaking a stale writer lock at %s', lockPath)
+        },
+      })
+    })
+  }
+
+  /** Reject a write the live environment would shadow into apparent no-effect. */
+  private assertUnshadowed(ref: CredentialRef, verb: 'set' | 'unset'): void {
+    const env = process.env[ref]
+    if (env !== undefined && env.length > 0) {
+      throw new Error(
+        `credentials-local: "${ref}" is supplied read-only by the process environment, so ${verb} would be`
+        + ' shadowed; change the launching environment instead',
+      )
+    }
+  }
+
+  /** Boot read: an absent file is an empty store; any other failure is loud. */
+  private async loadInitial(): Promise<void> {
+    let text: string
+    try {
+      text = await readFile(this.spec.filename, 'utf8')
+    } catch (error) {
+      if (!isENOENT(error)) throw error
+      return
+    }
+    this.text = text
+    this.values = new Map(Object.entries(parse(text)))
+  }
+
+  /* jscpd:ignore-start -- same deliberate mirror of settings-local's reload and
+     reconcile policy: warn-and-keep on a reload, throw on a write, invariant
+     failures propagate. */
+  /**
+   * Re-read the document after a watcher event. Unchanged content (including
+   * this provider's own writes) is a no-op; an unreadable document keeps the
+   * last good snapshot and warns — a live hot-reload must never take the
+   * process down. An invariant violation escaping the fan-out is not a reload
+   * failure and propagates to the queue's error surface.
+   */
+  private async refresh(): Promise<void> {
+    if (this.closed) return
+    try {
+      await this.reconcileFromDisk()
+    } catch (error) {
+      if ((error as { code?: unknown } | null)?.code === 'INVARIANT') throw error
+      this.ctx.logger.warn('credentials-local: reload failed at %s; keeping the last good document', this.spec.filename)
+      this.ctx.logger.warn(error)
+    }
+  }
+
+  /**
+   * Compare the on-disk text against the cache and publish any difference
+   * into the seam. Absence publishes the empty store; an unreadable file
+   * throws, so each caller picks its policy — a reload warns and keeps the
+   * last good snapshot, a write fails loud. dotenv parsing is lenient by
+   * design and cannot fail.
+   */
+  private async reconcileFromDisk(): Promise<void> {
+    let text: string | undefined
+    try {
+      text = await readFile(this.spec.filename, 'utf8')
+    } catch (error) {
+      if (!isENOENT(error)) throw error
+      text = undefined
+    }
+    if (text === this.text || this.isClosed()) return
+    const next = text === undefined ? new Map<string, string>() : new Map(Object.entries(parse(text)))
+    const changed = this.changedRefs(this.values, next)
+    this.text = text
+    this.values = next
+    for (const ref of changed) this.notifyUpdated(ref)
+  }
+  /* jscpd:ignore-end */
+
+  /** Seam-addressable entries whose effective (non-empty) value changed. */
+  private changedRefs(prev: Map<string, string>, next: Map<string, string>): CredentialRef[] {
+    const changed: CredentialRef[] = []
+    for (const key of new Set([...prev.keys(), ...next.keys()])) {
+      const before = prev.get(key)
+      const after = next.get(key)
+      const effectiveBefore = before !== undefined && before.length > 0 ? before : undefined
+      const effectiveAfter = after !== undefined && after.length > 0 ? after : undefined
+      if (effectiveBefore === effectiveAfter) continue
+      try {
+        changed.push(credentialRef(key))
+      } catch (_unaddressableKey) {
+        // A key that is not a POSIX identifier is preserved file content the
+        // seam cannot address, so no observer could ever see it change.
+      }
+    }
+    return changed
+  }
+}
+
+export default CredentialsLocal
diff --git a/packages/credentials/credentials-local/src/invariant.ts b/packages/credentials/credentials-local/src/invariant.ts
new file mode 100644
index 0000000000..9ec75ed21d
--- /dev/null
+++ b/packages/credentials/credentials-local/src/invariant.ts
@@ -0,0 +1,31 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-credentials-local`.
+ * @module @deepseek-ai/dsh-credentials-local/invariant
+ */
+
+/* jscpd:ignore-start */
+import type { Context } from 'cordis'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-credentials-local'
+
+/** Cordis companion plugin name. */
+export const name = 'credentials-local-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * No runtime invariant: the seam companion (`dsh-credentials/invariant`) owns the
+ * `credentials/updated` lifecycle contract; this provider's file/environment layering is
+ * asynchronous I/O pinned by its unit suite.
+ */
+const install: InvariantInstaller = () => {}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */
diff --git a/packages/credentials/credentials-local/tests/drain.spec.ts b/packages/credentials/credentials-local/tests/drain.spec.ts
new file mode 100644
index 0000000000..baefbd52c5
--- /dev/null
+++ b/packages/credentials/credentials-local/tests/drain.spec.ts
@@ -0,0 +1,71 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal } from '../src/index.ts'
+
+// The atomic write is the gated asynchronous hold point inside a queued
+// write; gating it makes the dispose-versus-queued-write race fully
+// deterministic. The lock helper passes through so the gated operation still
+// runs inside its real acquire/release cycle.
+vi.mock('@deepseek-ai/dsh-atomic-write', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('@deepseek-ai/dsh-atomic-write')>()
+  let gate: Promise<void> = Promise.resolve()
+  return {
+    ...actual,
+    writeFileAtomic: vi.fn(() => gate),
+    __setGate: (next: Promise<void>) => {
+      gate = next
+    },
+  }
+})
+
+async function setGate(next: Promise<void>): Promise<void> {
+  const mocked = await import('@deepseek-ai/dsh-atomic-write') as unknown as { __setGate: (next: Promise<void>) => void }
+  mocked.__setGate(next)
+}
+
+const KEY = credentialRef('DSH_CRED_DRAIN_A')
+const OTHER = credentialRef('DSH_CRED_DRAIN_B')
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  await setGate(Promise.resolve())
+  while (cleanups.length > 0) await cleanups.pop()!()
+})
+
+describe('write-drain teardown', () => {
+  it('lets the in-flight write land and fails the queued one after disposal', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'dsh-credentials-drain-'))
+    cleanups.push(() => rm(dir, { recursive: true, force: true }))
+    const ctx = new Context()
+    const fiber = ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+    await fiber
+    const service = ctx.credentials
+
+    let release!: () => void
+    await setGate(new Promise<void>((resolveGate) => {
+      release = resolveGate
+    }))
+    const first = service.set(KEY, 'one')
+    // Let the first task pass its liveness checks and park on the gate, so it
+    // is genuinely in-flight when disposal begins.
+    await new Promise(resolvePause => setTimeout(resolvePause, 5))
+    // Attach the rejection handler up front: the queued write fails while the
+    // drain is still awaited, before any later `await expect` could run.
+    const secondRejects = expect(service.set(OTHER, 'two')).rejects.toThrow(/disposed before the queued/)
+    const disposal = fiber.dispose()
+    // Give the drain disposer its first turn (set closed) before opening the gate.
+    await new Promise(resolvePause => setTimeout(resolvePause, 10))
+    release()
+    await disposal
+
+    await expect(first).resolves.toBeUndefined()
+    await secondRejects
+    expect(await service.resolve(KEY)).toEqual({ value: 'one', source: 'file' })
+    expect(await service.resolve(OTHER)).toBeUndefined()
+  })
+})
diff --git a/packages/credentials/credentials-local/tests/local.spec.ts b/packages/credentials/credentials-local/tests/local.spec.ts
new file mode 100644
index 0000000000..4ebaed1a0c
--- /dev/null
+++ b/packages/credentials/credentials-local/tests/local.spec.ts
@@ -0,0 +1,244 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { mkdir, mkdtemp, readFile, rm, stat, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join, resolve } from 'node:path'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import type { CredentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal, resolveSpec } from '../src/index.ts'
+
+const KEY = credentialRef('DSH_CRED_TEST')
+const OTHER = credentialRef('DSH_CRED_OTHER')
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  vi.unstubAllEnvs()
+  while (cleanups.length > 0) await cleanups.pop()!()
+})
+
+async function tempDir(): Promise<string> {
+  const dir = await mkdtemp(join(tmpdir(), 'dsh-credentials-local-'))
+  cleanups.push(() => rm(dir, { recursive: true, force: true }))
+  return dir
+}
+
+async function boot(config: ConstructorParameters<typeof CredentialsLocal>[1]): Promise<Context> {
+  const ctx = new Context()
+  const fiber = ctx.plugin(CredentialsLocal, config)
+  cleanups.push(async () => {
+    await fiber.dispose()
+  })
+  await fiber
+  return ctx
+}
+
+function updates(ctx: Context): CredentialRef[] {
+  const seen: CredentialRef[] = []
+  ctx.on('credentials/updated', (ref) => {
+    seen.push(ref)
+  })
+  return seen
+}
+
+describe('resolveSpec', () => {
+  it('defaults to .env under the harness home with watching on', () => {
+    const spec = resolveSpec({ dshHome: '/custom/home' })
+    expect(spec).toEqual({ filename: resolve('/custom/home/.env'), watch: true, debounceMs: 100 })
+  })
+
+  it('lets an explicit path win over the home', () => {
+    const spec = resolveSpec({ path: '/etc/dsh/creds.env', dshHome: '/ignored', watch: false, debounceMs: 5 })
+    expect(spec).toEqual({ filename: resolve('/etc/dsh/creds.env'), watch: false, debounceMs: 5 })
+  })
+})
+
+describe('layering and reads', () => {
+  it('treats an absent file as an empty writable store', async () => {
+    const dir = await tempDir()
+    const ctx = await boot({ path: join(dir, '.env'), watch: false })
+    expect(await ctx.credentials.resolve(KEY)).toBeUndefined()
+    expect(await ctx.credentials.describe(KEY)).toEqual({ configured: false, writable: true })
+  })
+
+  it('serves file entries, including export-prefixed and quoted values', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, '# notes\nexport DSH_CRED_TEST=plain\nDSH_CRED_OTHER="with space"\n')
+    const ctx = await boot({ path, watch: false })
+    expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'plain', source: 'file' })
+    expect(await ctx.credentials.resolve(OTHER)).toEqual({ value: 'with space', source: 'file' })
+    expect(await ctx.credentials.describe(KEY)).toEqual({ configured: true, source: 'file', writable: true })
+  })
+
+  it('lets a non-empty process environment win read-only over the file', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_TEST=from-file\n')
+    const ctx = await boot({ path, watch: false })
+    vi.stubEnv('DSH_CRED_TEST', 'from-env')
+    expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'from-env', source: 'env' })
+    expect(await ctx.credentials.describe(KEY)).toEqual({ configured: true, source: 'env', writable: false })
+  })
+
+  it('treats empty values as absent in both layers', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_TEST=\n')
+    const ctx = await boot({ path, watch: false })
+    vi.stubEnv('DSH_CRED_TEST', '')
+    expect(await ctx.credentials.resolve(KEY)).toBeUndefined()
+    expect(await ctx.credentials.describe(KEY)).toEqual({ configured: false, writable: true })
+  })
+
+  it('fails boot loud when the document exists but cannot be read', async () => {
+    const dir = await tempDir()
+    const path = join(dir, 'occupied')
+    await mkdir(path)
+    const ctx = new Context()
+    await expect(ctx.plugin(CredentialsLocal, { path, watch: false })).rejects.toThrow()
+  })
+})
+
+describe('line-editing writes', () => {
+  it('appends a missing key to a fresh 0600 document and emits the commit', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    const seen = updates(ctx)
+    await ctx.credentials.set(KEY, 'sk-fresh')
+    expect(await readFile(path, 'utf8')).toBe('DSH_CRED_TEST=sk-fresh\n')
+    expect((await stat(path)).mode & 0o777).toBe(0o600)
+    expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'sk-fresh', source: 'file' })
+    expect(seen).toEqual([KEY])
+  })
+
+  it('rewrites one line in place, preserving every other byte and dropping duplicates', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, '# deployment notes\nFIRST=one\n\nDSH_CRED_TEST=old\nTRAILING=x\nDSH_CRED_TEST=older')
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(KEY, 'new value!')
+    expect(await readFile(path, 'utf8')).toBe('# deployment notes\nFIRST=one\n\nDSH_CRED_TEST=\'new value!\'\nTRAILING=x\n')
+  })
+
+  it('quotes hostile values so they round-trip through a fresh provider', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    const singleQuoted = 'with "quote", back\\slash and space'
+    const doubleQuoted = "it's got an apostrophe"
+    await ctx.credentials.set(KEY, singleQuoted)
+    await ctx.credentials.set(OTHER, doubleQuoted)
+    const reread = await boot({ path, watch: false })
+    expect(await reread.credentials.resolve(KEY)).toEqual({ value: singleQuoted, source: 'file' })
+    expect(await reread.credentials.resolve(OTHER)).toEqual({ value: doubleQuoted, source: 'file' })
+  })
+
+  it('fails loud on values no .env quoting style reads back verbatim', async () => {
+    const dir = await tempDir()
+    const ctx = await boot({ path: join(dir, '.env'), watch: false })
+    await expect(ctx.credentials.set(KEY, 'line one\nline two')).rejects.toThrow(/control characters/)
+    await expect(ctx.credentials.set(KEY, 'both \' and "')).rejects.toThrow(/mixes quoting/)
+  })
+
+  it('unsets only the owning line and keeps an absent unset silent', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, '# keep\nDSH_CRED_TEST=gone\nDSH_CRED_OTHER=stays\n')
+    const ctx = await boot({ path, watch: false })
+    const seen = updates(ctx)
+    await ctx.credentials.unset(KEY)
+    expect(await readFile(path, 'utf8')).toBe('# keep\nDSH_CRED_OTHER=stays\n')
+    await ctx.credentials.unset(KEY)
+    expect(seen).toEqual([KEY])
+  })
+
+  it('rejects empty values, shadowed writes, and multi-line entries', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_TEST="line one\nline two"\n')
+    const ctx = await boot({ path, watch: false })
+
+    await expect(ctx.credentials.set(KEY, '')).rejects.toThrow(/empty value/)
+    await expect(ctx.credentials.set(KEY, 'next')).rejects.toThrow(/multi-line/)
+    await expect(ctx.credentials.unset(KEY)).rejects.toThrow(/multi-line/)
+
+    vi.stubEnv('DSH_CRED_TEST', 'shadowing')
+    await expect(ctx.credentials.set(KEY, 'next')).rejects.toThrow(/shadowed/)
+    await expect(ctx.credentials.unset(KEY)).rejects.toThrow(/shadowed/)
+  })
+
+  it('leaves an empty document after unsetting the only entry', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_TEST=only\n')
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.unset(KEY)
+    expect(await readFile(path, 'utf8')).toBe('')
+  })
+
+  it('chains past a rejected write so one bad value cannot poison the queue', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    const bad = expect(ctx.credentials.set(KEY, 'both \' and "')).rejects.toThrow(/mixes quoting/)
+    const good = ctx.credentials.set(OTHER, 'lands')
+    await bad
+    await good
+    expect(await readFile(path, 'utf8')).toBe('DSH_CRED_OTHER=lands\n')
+  })
+
+  it('serializes concurrent writes so both land in the one document', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    await Promise.all([
+      ctx.credentials.set(KEY, 'one'),
+      ctx.credentials.set(OTHER, 'two'),
+    ])
+    expect(await readFile(path, 'utf8')).toBe('DSH_CRED_TEST=one\nDSH_CRED_OTHER=two\n')
+  })
+
+  it('refuses writes after disposal', async () => {
+    const dir = await tempDir()
+    const ctx = new Context()
+    const fiber = ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+    await fiber
+    // Capture the handle first: disposal also removes the ctx.credentials service.
+    const service = ctx.credentials
+    await fiber.dispose()
+    await expect(service.set(KEY, 'late')).rejects.toThrow(/disposed/)
+  })
+})
+
+describe('real hot reload', () => {
+  it('publishes external edits, replaces the snapshot wholesale, and suppresses self-writes', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    // Watching starts on an existing document: creation racing watcher setup
+    // is a chokidar readiness gap, not the reload contract under test.
+    await writeFile(path, 'DSH_CRED_TEST=boot\n')
+    const ctx = await boot({ path, debounceMs: 10 })
+    const seen = updates(ctx)
+
+    await writeFile(path, 'DSH_CRED_TEST=live\nDSH_CRED_OTHER=extra\n')
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'live', source: 'file' })
+    })
+
+    // Wholesale replacement: an entry deleted on disk never lingers in memory.
+    await writeFile(path, 'DSH_CRED_TEST=live\n')
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(OTHER)).toBeUndefined()
+    })
+
+    const before = seen.length
+    await ctx.credentials.set(KEY, 'self-written')
+    await new Promise(resolvePause => setTimeout(resolvePause, 200))
+    // Exactly the committed write's own event: the watcher echo of our own
+    // content is recognized by the text cache and publishes nothing extra.
+    expect(seen.length).toBe(before + 1)
+    expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'self-written', source: 'file' })
+  })
+})
diff --git a/packages/credentials/credentials-local/tests/review-fixes.spec.ts b/packages/credentials/credentials-local/tests/review-fixes.spec.ts
new file mode 100644
index 0000000000..7583cf0813
--- /dev/null
+++ b/packages/credentials/credentials-local/tests/review-fixes.spec.ts
@@ -0,0 +1,202 @@
+// Third-review behaviors: read-modify-write under the writer lock (external
+// edits survive an API write), the contained credentials/updated fan-out (a
+// broken observer never fails a committed write), and the physical-line
+// editor's multi-line and CRLF discipline.
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { mkdtemp, readFile, rm, stat, utimes, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal } from '../src/index.ts'
+
+const ALPHA = credentialRef('DSH_REVIEW_ALPHA')
+const BETA = credentialRef('DSH_REVIEW_BETA')
+const INNER = credentialRef('DSH_REVIEW_INNER')
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  while (cleanups.length > 0) await cleanups.pop()!()
+})
+
+async function tempDir(): Promise<string> {
+  const dir = await mkdtemp(join(tmpdir(), 'dsh-cred-review-'))
+  cleanups.push(() => rm(dir, { recursive: true, force: true }))
+  return dir
+}
+
+async function boot(config: ConstructorParameters<typeof CredentialsLocal>[1]): Promise<Context> {
+  const ctx = new Context()
+  const fiber = ctx.plugin(CredentialsLocal, config)
+  cleanups.push(async () => { await fiber.dispose() })
+  await fiber
+  return ctx
+}
+
+describe('read-modify-write', () => {
+  it('folds an unobserved external edit into a write instead of overwriting it', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    const seen: string[] = []
+    ctx.on('credentials/updated', (ref) => { seen.push(ref) })
+    await ctx.credentials.set(ALPHA, 'one')
+    // The external edit has landed on disk but no watcher reported it (watch
+    // is off — the same blind spot as a debounce window or a missed event).
+    await writeFile(path, `${ALPHA}=one\n${BETA}=external\n`)
+    await ctx.credentials.set(ALPHA, 'two')
+    const text = await readFile(path, 'utf8')
+    expect(text).toContain(`${BETA}=external`)
+    expect(text).toContain(`${ALPHA}=two`)
+    // The fold published the unobserved entry before the write's own commit.
+    expect(seen).toEqual([ALPHA, BETA, ALPHA])
+    expect(await ctx.credentials.resolve(BETA)).toEqual({ value: 'external', source: 'file' })
+  })
+
+  it('keeps both refs when two providers write the same document concurrently', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const first = await boot({ path, watch: false })
+    const second = await boot({ path, watch: false })
+    await Promise.all([
+      (async () => { for (const value of ['1', '2', '3'] as const) await first.credentials.set(ALPHA, value) })(),
+      (async () => { for (const value of ['1', '2', '3'] as const) await second.credentials.set(BETA, value) })(),
+    ])
+    const third = await boot({ path, watch: false })
+    expect(await third.credentials.resolve(ALPHA)).toEqual({ value: '3', source: 'file' })
+    expect(await third.credentials.resolve(BETA)).toEqual({ value: '3', source: 'file' })
+  })
+
+  it('breaks a stale writer lock with a warning and writes through', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    await writeFile(`${path}.lock`, 'crashed-holder\n')
+    const past = (Date.now() - 60_000) / 1000
+    await utimes(`${path}.lock`, past, past)
+    await ctx.credentials.set(ALPHA, 'nine')
+    expect(await readFile(path, 'utf8')).toContain(`${ALPHA}=nine`)
+  })
+
+  it('creates the credentials directory owner-only', async () => {
+    const dir = await tempDir()
+    const home = join(dir, 'home')
+    const ctx = await boot({ path: join(home, '.env'), watch: false })
+    await ctx.credentials.set(ALPHA, 'one')
+    expect((await stat(home)).mode & 0o777).toBe(0o700)
+  })
+})
+
+describe('contained update fan-out', () => {
+  it('does not fail a committed set when a listener throws, and later listeners still run', async () => {
+    const dir = await tempDir()
+    const ctx = await boot({ path: join(dir, '.env'), watch: false })
+    ctx.on('credentials/updated', () => {
+      throw new Error('observer boom')
+    })
+    const second = vi.fn()
+    ctx.on('credentials/updated', second)
+    await expect(ctx.credentials.set(ALPHA, 'one')).resolves.toBeUndefined()
+    expect(second).toHaveBeenCalledWith(ALPHA)
+    expect(await ctx.credentials.resolve(ALPHA)).toEqual({ value: 'one', source: 'file' })
+  })
+
+  it('contains an async listener rejection', async () => {
+    const dir = await tempDir()
+    const ctx = await boot({ path: join(dir, '.env'), watch: false })
+    // An unknown-returning function keeps the typed surface legal while the
+    // runtime value is still the rejected promise the containment must handle.
+    const boom = (): unknown => Promise.reject(new Error('async observer boom'))
+    ctx.on('credentials/updated', boom)
+    await expect(ctx.credentials.set(ALPHA, 'one')).resolves.toBeUndefined()
+    await new Promise(resolve => setTimeout(resolve, 10))
+  })
+
+  it('rethrows an invariant-coded failure after the commit and the remaining listeners', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, watch: false })
+    ctx.on('credentials/updated', () => {
+      throw Object.assign(new Error('forged relation'), { code: 'INVARIANT' })
+    })
+    const second = vi.fn()
+    ctx.on('credentials/updated', second)
+    await expect(ctx.credentials.set(ALPHA, 'one')).rejects.toThrow(/forged relation/)
+    // Harness-fatal by design — but the write itself committed first.
+    expect(second).toHaveBeenCalledWith(ALPHA)
+    expect(await readFile(path, 'utf8')).toContain(`${ALPHA}=one`)
+    expect(await ctx.credentials.resolve(ALPHA)).toEqual({ value: 'one', source: 'file' })
+  })
+})
+
+describe('physical-line editor', () => {
+  it('never mistakes a quoted multi-line continuation for an assignment', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const wrapped = `DSH_REVIEW_WRAPPED="line1\n${INNER}=looks-like-one\nline3"\n${ALPHA}=a\n`
+    await writeFile(path, wrapped)
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(ALPHA, 'b')
+    // The wrapped value survives byte-for-byte; only ALPHA's line changed.
+    const afterAlpha = await readFile(path, 'utf8')
+    expect(afterAlpha).toBe(`DSH_REVIEW_WRAPPED="line1\n${INNER}=looks-like-one\nline3"\n${ALPHA}=b\n`)
+    // Setting the inner-looking ref appends a real assignment; the
+    // continuation line inside the quoted value stays untouched.
+    await ctx.credentials.set(INNER, 'real')
+    const afterInner = await readFile(path, 'utf8')
+    expect(afterInner).toBe(`DSH_REVIEW_WRAPPED="line1\n${INNER}=looks-like-one\nline3"\n${ALPHA}=b\n${INNER}=real\n`)
+    expect(await ctx.credentials.resolve(INNER)).toEqual({ value: 'real', source: 'file' })
+  })
+
+  it('preserves CRLF line endings on untouched and edited lines', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `# note\r\n${ALPHA}=a\r\n${BETA}=keep\r\n`)
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(ALPHA, 'b')
+    expect(await readFile(path, 'utf8')).toBe(`# note\r\n${ALPHA}=b\r\n${BETA}=keep\r\n`)
+    await ctx.credentials.set(INNER, 'new')
+    expect(await readFile(path, 'utf8')).toBe(`# note\r\n${ALPHA}=b\r\n${BETA}=keep\r\n${INNER}=new\r\n`)
+  })
+
+  it('terminates a final unterminated line before appending', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `${ALPHA}=a`)
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(BETA, 'b')
+    expect(await readFile(path, 'utf8')).toBe(`${ALPHA}=a\n${BETA}=b\n`)
+  })
+
+  it('rewrites a final unterminated assignment in the dominant ending style', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `${ALPHA}=a`)
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(ALPHA, 'b')
+    expect(await readFile(path, 'utf8')).toBe(`${ALPHA}=b\n`)
+  })
+
+  it('tracks a single-quoted multi-line value through its continuation', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `DSH_REVIEW_SQ='line1\n${INNER}=shadow\nline3'\n`)
+    const ctx = await boot({ path, watch: false })
+    await ctx.credentials.set(ALPHA, 'x')
+    expect(await readFile(path, 'utf8'))
+      .toBe(`DSH_REVIEW_SQ='line1\n${INNER}=shadow\nline3'\n${ALPHA}=x\n`)
+  })
+
+  it('reports a multi-line entry as unwritable and refuses to edit it', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `${ALPHA}="line1\nline2"\n`)
+    const ctx = await boot({ path, watch: false })
+    expect(await ctx.credentials.describe(ALPHA)).toEqual({ configured: true, source: 'file', writable: false })
+    await expect(ctx.credentials.set(ALPHA, 'flat')).rejects.toThrow(/multi-line entry/)
+    await expect(ctx.credentials.unset(ALPHA)).rejects.toThrow(/multi-line entry/)
+    // Resolution still serves the multi-line value.
+    expect(await ctx.credentials.resolve(ALPHA)).toEqual({ value: 'line1\nline2', source: 'file' })
+  })
+})
diff --git a/packages/credentials/credentials-local/tests/watcher.spec.ts b/packages/credentials/credentials-local/tests/watcher.spec.ts
new file mode 100644
index 0000000000..6ff53252cf
--- /dev/null
+++ b/packages/credentials/credentials-local/tests/watcher.spec.ts
@@ -0,0 +1,223 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { chmod, mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal } from '../src/index.ts'
+
+// chokidar is the nondeterministic OS boundary: faking it lets these tests
+// drive the event pipeline (error events, races with unreadable files)
+// deterministically. Real end-to-end watching stays covered by local.spec.ts.
+vi.mock('chokidar', async () => {
+  const { EventEmitter } = await import('node:events')
+  class FakeWatcher extends EventEmitter {
+    close = vi.fn(() => Promise.resolve())
+  }
+  const instances: Array<{ path: string; options: unknown; watcher: InstanceType<typeof FakeWatcher> }> = []
+  return {
+    watch: vi.fn((path: string, options: unknown) => {
+      const watcher = new FakeWatcher()
+      instances.push({ path, options, watcher })
+      return watcher
+    }),
+    __instances: instances,
+  }
+})
+
+interface FakeChokidar {
+  __instances: Array<{
+    path: string
+    options: { awaitWriteFinish: { stabilityThreshold: number; pollInterval: number } }
+    watcher: import('node:events').EventEmitter
+  }>
+}
+
+async function fakeInstances(): Promise<FakeChokidar['__instances']> {
+  const chokidar = await import('chokidar') as unknown as FakeChokidar
+  return chokidar.__instances
+}
+
+const KEY = credentialRef('DSH_CRED_PIPE')
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  while (cleanups.length > 0) await cleanups.pop()!()
+  ;(await fakeInstances()).length = 0
+})
+
+async function tempDir(): Promise<string> {
+  const dir = await mkdtemp(join(tmpdir(), 'dsh-credentials-watch-'))
+  cleanups.push(() => rm(dir, { recursive: true, force: true }))
+  return dir
+}
+
+async function boot(config: ConstructorParameters<typeof CredentialsLocal>[1]): Promise<Context> {
+  const ctx = new Context()
+  const fiber = ctx.plugin(CredentialsLocal, config)
+  cleanups.push(async () => {
+    await fiber.dispose()
+  })
+  await fiber
+  return ctx
+}
+
+describe('watcher pipeline', () => {
+  it('clamps the write-settle poll interval for a zero debounce', async () => {
+    const dir = await tempDir()
+    await boot({ path: join(dir, '.env'), debounceMs: 0 })
+    const [instance] = await fakeInstances()
+    expect(instance!.options.awaitWriteFinish).toEqual({ stabilityThreshold: 0, pollInterval: 1 })
+  })
+
+  it('survives a watcher error and keeps publishing later edits', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, debounceMs: 5 })
+    const [instance] = await fakeInstances()
+
+    instance!.watcher.emit('error', new Error('watch backend failure'))
+    expect(await ctx.credentials.resolve(KEY)).toBeUndefined()
+
+    await writeFile(path, 'DSH_CRED_PIPE=arrived\n')
+    instance!.watcher.emit('all', 'change', path)
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'arrived', source: 'file' })
+    })
+  })
+
+  it('keeps the last good snapshot when the file turns unreadable at runtime', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_PIPE=good\n')
+    const ctx = await boot({ path, debounceMs: 5 })
+
+    await chmod(path, 0o000)
+    cleanups.push(() => chmod(path, 0o600))
+    const [instance] = await fakeInstances()
+    instance!.watcher.emit('all', 'change', path)
+    // The warn-and-keep path is asynchronous; give the serialized refresh a turn.
+    await new Promise(resolve => setTimeout(resolve, 50))
+    expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'good', source: 'file' })
+  })
+
+  it('keeps the reload queue alive after an invariant violation escapes the fan-out', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, debounceMs: 5 })
+    let arm = true
+    ctx.on('credentials/updated', () => {
+      if (!arm) return
+      throw Object.assign(new Error('forged relation'), { code: 'INVARIANT' })
+    })
+    const [instance] = await fakeInstances()
+
+    await writeFile(path, 'DSH_CRED_PIPE=first\n')
+    instance!.watcher.emit('all', 'change', path)
+    // The snapshot commits before the fan-out, so the value lands even though
+    // the listener threw out of the refresh.
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'first', source: 'file' })
+    })
+
+    arm = false
+    await writeFile(path, 'DSH_CRED_PIPE=second\n')
+    instance!.watcher.emit('all', 'change', path)
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'second', source: 'file' })
+    })
+  })
+
+  it('quiesces the refresh pipeline before dispose completes', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_PIPE=initial\n')
+    const ctx = new Context()
+    const fiber = ctx.plugin(CredentialsLocal, { path, debounceMs: 5 })
+    await fiber
+    let disposed = false
+    let postDisposeCommits = 0
+    ctx.on('credentials/updated', () => {
+      if (disposed) postDisposeCommits += 1
+    })
+
+    await writeFile(path, 'DSH_CRED_PIPE=changed\n')
+    const [instance] = await fakeInstances()
+    // Two queued refreshes: dispose interrupts one mid-flight and the other
+    // before it starts, so both closed guards must hold.
+    instance!.watcher.emit('all', 'change', path)
+    instance!.watcher.emit('all', 'change', path)
+    await fiber.dispose()
+    disposed = true
+    instance!.watcher.emit('all', 'change', path)
+    instance!.watcher.emit('ready')
+    await new Promise(resolve => setTimeout(resolve, 100))
+    expect(postDisposeCommits).toBe(0)
+  })
+
+  it('empties the snapshot when the document is deleted and emits the removals', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'DSH_CRED_PIPE=doomed\n')
+    const ctx = await boot({ path, debounceMs: 5 })
+    const seen: string[] = []
+    ctx.on('credentials/updated', (ref) => {
+      seen.push(ref)
+    })
+
+    await rm(path)
+    const [instance] = await fakeInstances()
+    instance!.watcher.emit('all', 'unlink', path)
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toBeUndefined()
+    })
+    expect(seen).toEqual([KEY])
+  })
+
+  it('publishes only seam-addressable keys and preserves the rest untouched', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, 'BAD-KEY=1\nDSH_CRED_PIPE=a\n')
+    const ctx = await boot({ path, debounceMs: 5 })
+    const seen: string[] = []
+    ctx.on('credentials/updated', (ref) => {
+      seen.push(ref)
+    })
+
+    await writeFile(path, 'BAD-KEY=2\nDSH_CRED_PIPE=b\n')
+    const [instance] = await fakeInstances()
+    instance!.watcher.emit('all', 'change', path)
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'b', source: 'file' })
+    })
+    // The dash-named key is preserved file content the seam cannot address:
+    // its change publishes nothing and breaks nothing.
+    expect(seen).toEqual([KEY])
+  })
+
+  it('treats an event for a still-absent file as a no-op', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    const ctx = await boot({ path, debounceMs: 5 })
+    const [instance] = await fakeInstances()
+    instance!.watcher.emit('all', 'add', path)
+    await new Promise(resolve => setTimeout(resolve, 50))
+    expect(await ctx.credentials.resolve(KEY)).toBeUndefined()
+  })
+
+  it('reconciles at watcher ready so a change during setup is not missed', async () => {
+    const dir = await tempDir()
+    const path = join(dir, '.env')
+    await writeFile(path, `${KEY}=a\n`)
+    const ctx = await boot({ path, debounceMs: 5 })
+    // Written after the initial load but before the watcher became active:
+    // no 'all' event will ever fire for it.
+    await writeFile(path, `${KEY}=written-before-ready\n`)
+    const [instance] = await fakeInstances()
+    instance!.watcher.emit('ready')
+    await vi.waitFor(async () => {
+      expect(await ctx.credentials.resolve(KEY)).toEqual({ value: 'written-before-ready', source: 'file' })
+    })
+  })
+})
diff --git a/packages/credentials/credentials-local/tsconfig.json b/packages/credentials/credentials-local/tsconfig.json
new file mode 100644
index 0000000000..3acfbdeffe
--- /dev/null
+++ b/packages/credentials/credentials-local/tsconfig.json
@@ -0,0 +1,33 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/cosmokit"
+    },
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../../../vendor/schemastery"
+    },
+    {
+      "path": "../../util/atomic-write"
+    },
+    {
+      "path": "../../util/paths"
+    },
+    {
+      "path": "../credentials"
+    },
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}
diff --git a/packages/credentials/credentials/README.i18n.yaml b/packages/credentials/credentials/README.i18n.yaml
new file mode 100644
index 0000000000..10fe5f0ffe
--- /dev/null
+++ b/packages/credentials/credentials/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/credentials/credentials/README.md
+README.md: 1c18c4762360ad081227b7097cd82ddab4fcdefc
+README.zh.md: 751fb7c1e8326cef91b925c5f8b9f40d92e1bba6
diff --git a/packages/credentials/credentials/README.md b/packages/credentials/credentials/README.md
new file mode 100644
index 0000000000..1c18c47623
--- /dev/null
+++ b/packages/credentials/credentials/README.md
@@ -0,0 +1,48 @@
+# dsh-credentials
+
+English | [中文](README.zh.md)
+
+Abstract credential seam (`ctx.credentials`). One doctrine, three consequences:
+
+**Configuration carries references to secrets, never the secrets.** A settings section or `cordis.yml` entry says `apiKeyEnv: DEEPSEEK_API_KEY`; the value behind that reference lives with a credential provider. So the settings document stays safe to sync and to render in a configuration UI, `describe()` can answer "is this configured, where from, can I write it" without ever holding a value, and rotating a secret touches no configuration file.
+
+**Consumers resolve per operation.** `resolve(ref)` is called at the start of each operation (the LLM adapters resolve once per model request) and never cached across operations — that read is what makes a changed credential reach the very next request without restarting any plugin.
+
+**An empty stored value is absent.** Everywhere: `resolve` skips it, `describe` reports it unconfigured. A blank can never masquerade as a configured secret.
+
+## Surface
+
+```ts
+import type { Context } from 'cordis'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+
+declare const ctx: Context
+
+const ref = credentialRef('DEEPSEEK_API_KEY')            // POSIX shell identifier, branded
+const hit = await ctx.credentials.resolve(ref)           // { value, source } | undefined
+const info = await ctx.credentials.describe(ref)         // { configured, source?, writable } — never the value
+await ctx.credentials.set(ref, 'sk-…')                   // rejects while a read-only source shadows the ref
+await ctx.credentials.unset(ref)                         // no-op when absent; same shadowing rule
+```
+
+`credentials/updated (ref)` fires after a committed change to a provider-managed source — a `set`, an `unset`, or an external edit observed in storage. Ambient process-environment changes are not observable and never emit. Consumers do not need the event (they re-resolve per operation); it exists for configuration UIs refreshing a "configured" badge.
+
+The shadowing rule on `set`/`unset` is deliberate fail-loud: when a read-only source (the live process environment, in the local provider) currently supplies the reference, a write would appear to succeed while resolution keeps returning the shadowing value — the seam rejects instead, and `describe().writable` lets a UI render the reference read-only up front.
+
+## Providers
+
+[`dsh-credentials-local`](../credentials-local/README.md) layers the live process environment over a `$DSH_HOME/.env` file. The seam shape leaves room for keyring-, helper-command-, and KMS-backed providers; a remote settings provider never needs to carry secrets.
+
+## Model Experience
+
+Indirectly, through the consuming LLM adapters: a resolved value authorizes their provider requests, and the adapter owns every model-visible surface.
+
+#### KV Cache effect
+
+No direct invalidation; credentials never enter a request prefix.
+
+## Known Limitations and Deferred Work
+
+- **No enumeration** — the seam answers questions about references it is given; configuration surfaces learn the references from settings schemas, so a `list()` has no current consumer.
+- **References are environment-variable-shaped** — one flat POSIX-identifier namespace until a provider needs richer addressing.
+- **Process-environment changes are invisible** — no event can fire for them; a UI only re-reads `describe()` on its own navigation.
diff --git a/packages/credentials/credentials/README.zh.md b/packages/credentials/credentials/README.zh.md
new file mode 100644
index 0000000000..751fb7c1e8
--- /dev/null
+++ b/packages/credentials/credentials/README.zh.md
@@ -0,0 +1,48 @@
+# dsh-credentials
+
+[English](README.md) | 中文
+
+抽象凭据 seam（`ctx.credentials`）。一条准则，三个推论：
+
+**配置只携带对机密的引用，绝不携带机密本身。** settings 分节或 `cordis.yml` 条目写 `apiKeyEnv: DEEPSEEK_API_KEY`，引用背后的值归凭据 provider 所有。于是设置文档可以放心同步、放心渲染进配置界面；`describe()` 无需持有值就能回答「配置了吗、来自哪层、能否写入」；轮换机密不触碰任何配置文件。
+
+**消费方按操作解析。** `resolve(ref)` 在每个操作开始时调用（LLM 适配器每次模型请求解析一次），绝不跨操作缓存——正是这次读取让改过的凭据无需重启任何插件就作用于下一次请求。
+
+**空的存储值等于不存在。**处处如此：`resolve` 跳过它，`describe` 报告未配置。空白永远不会伪装成已配置的机密。
+
+## 接口面
+
+```ts
+import type { Context } from 'cordis'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+
+declare const ctx: Context
+
+const ref = credentialRef('DEEPSEEK_API_KEY')            // POSIX shell identifier, branded
+const hit = await ctx.credentials.resolve(ref)           // { value, source } | undefined
+const info = await ctx.credentials.describe(ref)         // { configured, source?, writable } — never the value
+await ctx.credentials.set(ref, 'sk-…')                   // rejects while a read-only source shadows the ref
+await ctx.credentials.unset(ref)                         // no-op when absent; same shadowing rule
+```
+
+`credentials/updated (ref)` 在 provider 管理的来源发生已提交变更后触发——`set`、`unset` 或在存储中观察到的外部编辑。进程环境变量的变化不可观测，永不触发。消费方不需要该事件（它们按操作重新解析）；它服务于配置界面刷新「已配置」徽标。
+
+`set`/`unset` 的遮蔽规则是刻意的响亮失败：当只读来源（本地 provider 中即活跃进程环境）正在提供该引用时，写入会表面成功而解析仍返回遮蔽值——seam 选择直接拒绝，并通过 `describe().writable` 让界面提前把该引用渲染为只读。
+
+## Providers
+
+[`dsh-credentials-local`](../credentials-local/README.md) 把活跃进程环境叠加在 `$DSH_HOME/.env` 文件之上。seam 形状为 keyring、辅助命令、KMS 后端的 provider 留好了位置；远端 settings provider 永远不必携带机密。
+
+## Model Experience
+
+经由消费它的 LLM 适配器间接生效：解析出的值为适配器的提供方请求授权，每个模型可见面都归适配器所有。
+
+#### KV Cache effect
+
+无直接失效；凭据绝不进入请求前缀。
+
+## Known Limitations and Deferred Work
+
+- **不提供枚举**——seam 只回答被问到的引用；配置界面从 settings schema 得知引用集合，`list()` 没有当前消费方。
+- **引用限定为环境变量形状**——在有 provider 需要更丰富寻址前，保持单一扁平的 POSIX 标识符命名空间。
+- **进程环境变化不可见**——不可能为其发事件；界面只能在自身导航时重新读取 `describe()`。
diff --git a/packages/credentials/credentials/package.json b/packages/credentials/credentials/package.json
new file mode 100644
index 0000000000..d907b0a1bb
--- /dev/null
+++ b/packages/credentials/credentials/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "@deepseek-ai/dsh-credentials",
+  "description": "Abstract credential seam (ctx.credentials): settings carry references to secrets, providers own the values",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/types/**/*.d.ts",
+    "lib/types/**/*.d.ts.map",
+    "src"
+  ],
+  "license": "BSD-3-Clause",
+  "peerDependencies": {
+    "@deepseek-ai/dsh-brand": "^0.0.1",
+    "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "devDependencies": {
+    "@deepseek-ai/dsh-brand": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "cordis": "^4.0.0-rc.7"
+  }
+}
diff --git a/packages/credentials/credentials/src/index.ts b/packages/credentials/credentials/src/index.ts
new file mode 100644
index 0000000000..b640b42881
--- /dev/null
+++ b/packages/credentials/credentials/src/index.ts
@@ -0,0 +1,162 @@
+/**
+ * Credential seam (`ctx.credentials`). Settings and composition files carry
+ * *references* to secrets — environment-variable names — while providers own
+ * the actual values and their storage. Consumers resolve a reference once per
+ * operation, so a changed credential reaches the next operation without any
+ * plugin restart, and configuration surfaces describe a reference without
+ * ever seeing its value.
+ * @module @deepseek-ai/dsh-credentials
+ */
+
+import { Context, Service } from 'cordis'
+import type { Branded } from '@deepseek-ai/dsh-brand'
+
+/** Nominal reference to one credential: a POSIX-style environment-variable name. */
+export type CredentialRef = Branded<'CredentialRef'>
+
+const REF_PATTERN = /^[A-Za-z_][A-Za-z0-9_]*$/
+
+/**
+ * Brand a raw string as a {@link CredentialRef}.
+ * @param value - candidate reference; a POSIX shell identifier such as `DEEPSEEK_API_KEY`.
+ * @returns the branded reference.
+ */
+export function credentialRef(value: string): CredentialRef {
+  if (!REF_PATTERN.test(value)) {
+    throw new TypeError(`credential ref "${value}" must match ${String(REF_PATTERN)}`)
+  }
+  return value as CredentialRef
+}
+
+/** One resolved credential value and the source layer that supplied it. */
+export interface ResolvedCredential {
+  /** The non-empty secret value. */
+  value: string
+  /** Provider-defined source layer id (the local provider uses `env` and `file`). */
+  source: string
+}
+
+/** Source and writability facts for one reference, safe for configuration UIs — never the value. */
+export interface CredentialInfo {
+  /** Whether {@link Credentials.resolve} would currently return a value. */
+  configured: boolean
+  /** Source layer currently supplying the value; absent while unconfigured. */
+  source?: string
+  /** Whether {@link Credentials.set} would currently succeed for this reference. */
+  writable: boolean
+}
+
+declare module 'cordis' {
+  interface Context {
+    credentials: Credentials
+  }
+
+  interface Events {
+    /**
+     * Committed change to a provider-managed credential source: a `set`, an
+     * `unset`, or an external edit observed in storage. Ambient
+     * process-environment changes are not observable and never emit. Listener
+     * failures are contained and logged — a sync throw and an async rejection
+     * alike — without changing the committed operation's outcome, except
+     * `INVARIANT`-coded failures, which rethrow after every listener ran;
+     * that rethrow reaches the emitter only from synchronous listeners, so
+     * invariant checks on this event must not be async functions.
+     * @param ref - the reference whose stored value changed.
+     * @mode emit
+     */
+    'credentials/updated'(ref: CredentialRef): void
+  }
+}
+
+/**
+ * Abstract credential service. Providers implement the four operations over
+ * their source layers; one seam-wide rule binds them all: an empty stored
+ * value is absent everywhere — `resolve` skips it, `describe` reports it
+ * unconfigured — so a blank never masquerades as a configured secret.
+ */
+export abstract class Credentials extends Service {
+  constructor(ctx: Context) {
+    super(ctx, 'credentials')
+  }
+
+  /**
+   * Resolve one reference to its current value. Resolution is per call:
+   * consumers re-resolve at each operation and must not cache across
+   * operations — that per-operation read is what makes a changed credential
+   * reach the next operation without a restart.
+   * @param ref - the reference to resolve.
+   * @returns the value and its source, or `undefined` while unconfigured.
+   */
+  abstract resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined>
+
+  /**
+   * Describe one reference for configuration surfaces without exposing the
+   * value.
+   * @param ref - the reference to describe.
+   * @returns configured state, supplying source, and writability.
+   */
+  abstract describe(ref: CredentialRef): Promise<CredentialInfo>
+
+  /**
+   * Durably store one value in the provider-managed writable source. Rejects
+   * while a read-only source shadows the reference — the write would appear
+   * to succeed while resolution keeps returning the shadowing value — and
+   * rejects an empty value (use {@link unset}).
+   * @param ref - the reference to store.
+   * @param value - the non-empty secret value.
+   */
+  abstract set(ref: CredentialRef, value: string): Promise<void>
+
+  /**
+   * Remove one reference from the provider-managed writable source; removing
+   * an absent reference is a no-op. Rejects while a read-only source shadows
+   * the reference, like {@link set}.
+   * @param ref - the reference to remove.
+   */
+  abstract unset(ref: CredentialRef): Promise<void>
+
+  /* jscpd:ignore-start -- deliberate symmetry with the settings seam's commit
+     fan-out: the contained-dispatch shape is the reviewed listener-lifecycle
+     contract, and extracting it would couple the two seams' event semantics. */
+  /**
+   * Fan `credentials/updated` out with contained listener failures: every
+   * listener runs, and a sync throw or async rejection is logged without
+   * changing the committed operation's outcome — except `INVARIANT`-coded
+   * failures, which rethrow after every listener ran (the rethrow reaches the
+   * caller only from synchronous listeners, so invariant checks on this event
+   * must not be async functions). Providers call this only after the write or
+   * reload actually committed, so a broken observer can never make a durable
+   * change look failed.
+   * @param ref - the reference whose stored value changed.
+   */
+  protected notifyUpdated(ref: CredentialRef): void {
+    let invariantFailure: unknown
+    const args = ['credentials/updated', ref]
+    for (const listener of this.ctx.events.dispatch('emit', args) as Array<(...listenerArgs: unknown[]) => unknown>) {
+      try {
+        const returned = listener(ref)
+        if (returned != null && typeof (returned as PromiseLike<unknown>).then === 'function') {
+          void Promise.resolve(returned as PromiseLike<unknown>).then(undefined, (error: unknown) => {
+            this.warnListenerFailure(ref, error)
+          })
+        }
+      } catch (error) {
+        if ((error as { code?: unknown } | null)?.code === 'INVARIANT') {
+          invariantFailure ??= error
+          continue
+        }
+        this.warnListenerFailure(ref, error)
+      }
+    }
+    if (invariantFailure !== undefined) throw invariantFailure as Error
+  }
+  /* jscpd:ignore-end */
+
+  /** Contained-listener diagnostic shared by the sync and async failure paths. */
+  private warnListenerFailure(ref: CredentialRef, error: unknown): void {
+    this.ctx.logger.warn('credentials: a credentials/updated listener for "%s" failed', ref)
+    this.ctx.logger.warn(error)
+  }
+}
+
+export default Credentials
diff --git a/packages/credentials/credentials/src/invariant.ts b/packages/credentials/credentials/src/invariant.ts
new file mode 100644
index 0000000000..23c2dda45b
--- /dev/null
+++ b/packages/credentials/credentials/src/invariant.ts
@@ -0,0 +1,38 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-credentials`.
+ * @module @deepseek-ai/dsh-credentials/invariant
+ */
+
+import type { Context } from 'cordis'
+import type { InvariantFailure, InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-credentials'
+
+/** Cordis companion plugin name. */
+export const name = 'credentials-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * Install the commit-event lifecycle contract: `credentials/updated` names a
+ * committed provider-source change, so it can only fire while a credentials
+ * service is live — an emission after disposal means a provider leaked work
+ * past its teardown quiescence. The value relation itself (`describe`
+ * agreeing with `resolve`) is asynchronous provider I/O and stays pinned by
+ * each provider's own suite.
+ */
+const install: InvariantInstaller = (ctx: Context, fail: InvariantFailure) => {
+  ctx.on('credentials/updated', (ref) => {
+    if (ctx.get('credentials') === undefined) {
+      fail(`credentials/updated for "${ref}" emitted without a live credentials service`)
+    }
+  })
+}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
diff --git a/packages/credentials/credentials/tests/credentials.spec.ts b/packages/credentials/credentials/tests/credentials.spec.ts
new file mode 100644
index 0000000000..9b4cf7b1e8
--- /dev/null
+++ b/packages/credentials/credentials/tests/credentials.spec.ts
@@ -0,0 +1,71 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import { credentialRef } from '../src/index.ts'
+import type { CredentialRef } from '../src/index.ts'
+import { MemoryCredentials } from './memory.ts'
+
+const REF = credentialRef('DEEPSEEK_API_KEY')
+
+async function boot(seed: Record<string, string> = {}): Promise<Context> {
+  const ctx = new Context()
+  await ctx.plugin(MemoryCredentials, seed)
+  return ctx
+}
+
+describe('credentialRef', () => {
+  it('brands POSIX shell identifiers', () => {
+    expect(credentialRef('DEEPSEEK_API_KEY')).toBe('DEEPSEEK_API_KEY')
+    expect(credentialRef('_private')).toBe('_private')
+    expect(credentialRef('lower_case9')).toBe('lower_case9')
+  })
+
+  it('rejects every other shape', () => {
+    for (const invalid of ['', '9LEADING', 'WITH-DASH', 'WITH SPACE', 'ns:key']) {
+      expect(() => credentialRef(invalid)).toThrow(TypeError)
+    }
+  })
+})
+
+describe('the credentials seam through the memory provider', () => {
+  it('mounts as ctx.credentials and resolves a seeded reference with its source', async () => {
+    const ctx = await boot({ DEEPSEEK_API_KEY: 'sk-seeded' })
+    expect(await ctx.credentials.resolve(REF)).toEqual({ value: 'sk-seeded', source: 'memory' })
+    expect(await ctx.credentials.describe(REF)).toEqual({ configured: true, source: 'memory', writable: true })
+  })
+
+  it('treats an empty stored value as absent everywhere', async () => {
+    const ctx = await boot({ DEEPSEEK_API_KEY: '' })
+    expect(await ctx.credentials.resolve(REF)).toBeUndefined()
+    expect(await ctx.credentials.describe(REF)).toEqual({ configured: false, writable: true })
+  })
+
+  it('stores through set, removes through unset, and emits the committed change', async () => {
+    const ctx = await boot()
+    const events: CredentialRef[] = []
+    ctx.on('credentials/updated', ref => void events.push(ref))
+
+    await ctx.credentials.set(REF, 'sk-live')
+    expect(await ctx.credentials.resolve(REF)).toEqual({ value: 'sk-live', source: 'memory' })
+    await ctx.credentials.unset(REF)
+    expect(await ctx.credentials.resolve(REF)).toBeUndefined()
+    expect(events).toEqual([REF, REF])
+  })
+
+  it('rejects an empty set and keeps an absent unset silent', async () => {
+    const ctx = await boot()
+    const events: CredentialRef[] = []
+    ctx.on('credentials/updated', ref => void events.push(ref))
+
+    await expect(ctx.credentials.set(REF, '')).rejects.toThrow(/empty value/)
+    await ctx.credentials.unset(REF)
+    expect(events).toEqual([])
+  })
+
+  it('removes the service with its fiber', async () => {
+    const ctx = new Context()
+    const fiber = await ctx.plugin(MemoryCredentials)
+    expect(ctx.get('credentials')).toBeDefined()
+    await fiber.dispose()
+    expect(ctx.get('credentials')).toBeUndefined()
+  })
+})
diff --git a/packages/credentials/credentials/tests/invariant.spec.ts b/packages/credentials/credentials/tests/invariant.spec.ts
new file mode 100644
index 0000000000..dccde4843f
--- /dev/null
+++ b/packages/credentials/credentials/tests/invariant.spec.ts
@@ -0,0 +1,37 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import InvariantService from '@deepseek-ai/dsh-invariants'
+import { credentialRef } from '../src/index.ts'
+import * as CredentialsInvariant from '../src/invariant.ts'
+import { MemoryCredentials } from './memory.ts'
+
+const REF = credentialRef('DEEPSEEK_API_KEY')
+
+describe('credentials invariant companion', () => {
+  it('accepts a committed change emitted by a live service', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService)
+    await ctx.plugin(CredentialsInvariant)
+    await ctx.plugin(MemoryCredentials)
+
+    await expect(ctx.credentials.set(REF, 'sk-live')).resolves.toBeUndefined()
+  })
+
+  it('fails an update event emitted without a live service', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService)
+    await ctx.plugin(CredentialsInvariant)
+
+    expect(() => { ctx.emit('credentials/updated', REF) }).toThrow(/invariant violated by "@deepseek-ai\/dsh-credentials"/)
+  })
+
+  it('reserves the package name against duplicate registration', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService)
+    await ctx.plugin(CredentialsInvariant)
+
+    expect(() => {
+      ctx.invariants.register('@deepseek-ai/dsh-credentials', () => {})
+    }).toThrow(/already registered/)
+  })
+})
diff --git a/packages/credentials/credentials/tests/memory.ts b/packages/credentials/credentials/tests/memory.ts
new file mode 100644
index 0000000000..dc1ed77a06
--- /dev/null
+++ b/packages/credentials/credentials/tests/memory.ts
@@ -0,0 +1,49 @@
+import type { Context } from 'cordis'
+import { Credentials } from '../src/index.ts'
+import type { CredentialInfo, CredentialRef, ResolvedCredential } from '../src/index.ts'
+
+/**
+ * In-memory credentials provider for interface and consumer tests: one
+ * always-writable `memory` source seeded from plugin config.
+ */
+export class MemoryCredentials extends Credentials {
+  private readonly store = new Map<string, string>()
+
+  constructor(ctx: Context, seed: Record<string, string> = {}) {
+    super(ctx)
+    for (const [key, value] of Object.entries(seed)) this.store.set(key, value)
+  }
+
+  override resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined> {
+    const value = this.store.get(ref)
+    return Promise.resolve(value === undefined || value.length === 0
+      ? undefined
+      : { value, source: 'memory' })
+  }
+
+  override describe(ref: CredentialRef): Promise<CredentialInfo> {
+    const value = this.store.get(ref)
+    const configured = value !== undefined && value.length > 0
+    return Promise.resolve({
+      configured,
+      ...configured ? { source: 'memory' } : {},
+      writable: true,
+    })
+  }
+
+  override set(ref: CredentialRef, value: string): Promise<void> {
+    if (value.length === 0) {
+      return Promise.reject(new Error('memory credentials: an empty value cannot be stored; use unset'))
+    }
+    this.store.set(ref, value)
+    this.ctx.emit('credentials/updated', ref)
+    return Promise.resolve()
+  }
+
+  override unset(ref: CredentialRef): Promise<void> {
+    if (this.store.delete(ref)) {
+      this.ctx.emit('credentials/updated', ref)
+    }
+    return Promise.resolve()
+  }
+}
diff --git a/packages/credentials/credentials/tsconfig.json b/packages/credentials/credentials/tsconfig.json
new file mode 100644
index 0000000000..5bc7a9fcf5
--- /dev/null
+++ b/packages/credentials/credentials/tsconfig.json
@@ -0,0 +1,24 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/cosmokit"
+    },
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../../util/brand"
+    },
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}
diff --git a/packages/examples/acp-demo/tests/load-path.e2e.ts b/packages/examples/acp-demo/tests/load-path.e2e.ts
index 8bc14c7330..37b41cedd0 100644
--- a/packages/examples/acp-demo/tests/load-path.e2e.ts
+++ b/packages/examples/acp-demo/tests/load-path.e2e.ts
@@ -42,7 +42,7 @@ const CORDIS_YML = `
 - id: acp-agent
   name: '@deepseek-ai/dsh-acp-demo'
   config:
-    provider: deepseek
+    provider: deepseek-official
     model: deepseek-v4-flash
     persona: 'You are a test agent.'
     workspaceContext: false
diff --git a/packages/fs/tool-fs/tests/fs-tools.e2e.ts b/packages/fs/tool-fs/tests/fs-tools.e2e.ts
index b0ae3a5b94..290d7125a7 100644
--- a/packages/fs/tool-fs/tests/fs-tools.e2e.ts
+++ b/packages/fs/tool-fs/tests/fs-tools.e2e.ts
@@ -28,7 +28,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('fs tools with-key smoke', () =>
     ctx = await fsHarness(workdir, SYSTEM)
     // agentLoop.create prepares a session with no cwd, so the provider default
     // (config.cwd = workdir) is the workspace.
-    const agent = ctx.agentLoop.create(SessionId('fs-e2e'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const agent = ctx.agentLoop.create(SessionId('fs-e2e'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     agent.followup(createUserMessage({
       content: [{ type: 'text', text:
@@ -61,7 +61,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('fs tools with-key smoke', () =>
       const handle = await ctx.agents.create({
         sessionId: SessionId(`fs-e2e-cwd-${Date.now()}`),
         meta: { cwd: sessionDir },
-        agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
       })
       handle.agent.followup(createUserMessage({
         content: [{ type: 'text', text:
diff --git a/packages/host/apiproxy/README.i18n.yaml b/packages/host/apiproxy/README.i18n.yaml
index 95c3643886..b253b47837 100644
--- a/packages/host/apiproxy/README.i18n.yaml
+++ b/packages/host/apiproxy/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/host/apiproxy/README.md
-README.md: 3ec21f90a495fe42e40c4407e0a81faa34a1e427
-README.zh.md: 5bcd310c23c35b851216176d69b13965dd2e1c3e
+README.md: cf8cf0aaa7e20436644b92a996b6f7a817b1dd31
+README.zh.md: 91b3d1d0577d4a9a7df97d3c785e28bb21e47fd1
diff --git a/packages/host/apiproxy/README.md b/packages/host/apiproxy/README.md
index 3ec21f90a4..cf8cf0aaa7 100644
--- a/packages/host/apiproxy/README.md
+++ b/packages/host/apiproxy/README.md
@@ -30,6 +30,8 @@ Directory picking delegates to the composed `ctx.directoryPicker` backend ([the
 
 The `command.*` and `skill.*` domains expose the host command registry and skill catalog to clients. Every method addresses one session's agent by `sessionId` (a served session always has an Agent; `command.*` resumes cold sessions through the same path as `session.*`, while `skill.list` resolves the project root from the session header without touching the Agent registry). `skill.list` serves the browser's user-selected model-reference path, so it returns only skills that are both model-invocable and user-invocable; this domain has no direct skill-loading RPC. `command.execute` runs a slash-command line host-side with pure admission semantics: the response reports whether the line resolved to a handler plus the minted lifecycle `commandId` when it did (correlating the acknowledgment with the flow node), while the outcome rides the durably logged `command/run`/`command/done` lifecycle pair broadcast on the mux stream; the carrier's request signal cancels the running handler. `host/commands-changed` is the catalog invalidation frame: clients refetch `command.list` instead of diffing.
 
+The `settings.*`, `credentials.*`, and `llm.*` domains are the configuration-page wire. The settings domain serves exactly the namespaces a registered configurable provider addresses (`ctx.llm.listConfigurableProviders()`): the seam is general, but this plane is the model-provider surface, so a namespace nothing in the directory names is neither described nor writable here and answers `settings-not-exposed` — the same answer an unregistered namespace gets, so no caller can enumerate the registry by probing. `settings.describe` returns each exposed namespace's serialized schemastery schema, redacted layered values (resolved/`base`/`user` — a field's presence in `user` marks it user-overridden), the `secrets` slot list, and the section's `revision`. `settings.update`/`settings.replace` write the user layer; `settings.mutate` applies path ops (`set`/`unset`) against the section as stored, which is the removal path for a client holding the redacted view — rebuilding a section from it and replacing wholesale would delete the secrets the wire never returned. Any write may carry `expectedRevision`; a stale one answers `settings-conflict` with both revisions rather than overwriting the writer that landed first, and every other seam refusal folds into `settings-rejected`. Secret-role values never ride any response in any layer; a secret crosses the wire in exactly one direction — inside an `update`/`mutate` payload or `credentials.set`. `credentials.describe` returns value-free views (`configured`/`source`/`writable`), and `credentials.set`/`credentials.unset` map a shadowed-reference refusal onto `credential-rejected`. `llm.providers` merges the configurable-provider directory with live routes (dormant entries carry `active: false`; undeclared live routes append with no settings address) and `llm.models` is the session-independent catalog. Three invalidation frames keep every surface converged without polling: `host/settings-changed {ns}` (`settings/document-updated` passthrough, so a raw change whose resolved value is unchanged still reaches clients), `host/credentials-changed {ref}` (reference names only, never values), and `host/models-changed` — fired both by `llm/adapters-updated` and by a change to an exposed provider namespace, whose settings carry that provider's catalog and endpoint. The browser carrier restricts the whole configuration plane, reads included (`settings.describe`/`update`/`replace`/`mutate`, `credentials.describe`/`set`/`unset`), to loopback same-origin requests — the `host.pickDirectory` privileged set. A composition without a settings or credential provider answers those domains with an actionable `internal` error naming the missing plugin.
+
 ## Carrier layer (`/client` + root)
 
 `AbstractApiClient` holds every protocol invariant — rpcId minting, envelope wrap/unwrap, zod parsing, SSE frame decoding, unary timeout, microtask-batched envelope observation (`subscribeEnvelopes`) — while platform subclasses supply only the `doFetch` transport aspect. `InProcessApiClient` over `toFetchHandler(api)` is the isomorphic point: the full wire serialization/validation path with no network, used by `dsh -p` headless.
@@ -45,7 +47,7 @@ None; this package neither assembles nor sends a provider request.
 ## Known Limitations and Deferred Work
 
 - **`respond` routing is shipped, but pending-interaction state is host-side work** — the wire shape (POST `/api/respond`, `RpcReceipt`) is final; the pending table that makes late/duplicate answers meaningful lives in `src/api-proxy.ts` and is still minimal (questions only, no approvals).
-- **Reserved seams stay out of `RpcMethodMap`** — `prompt.mode: 'inject'`, `task.list`, `host.listModels`, and a describe `hostInstanceId` are documented reservations; an unknown method fails loud at envelope parse rather than getting a not-implemented code.
+- **Reserved seams stay out of `RpcMethodMap`** — `prompt.mode: 'inject'`, `task.list`, and a describe `hostInstanceId` are documented reservations (the former `host.listModels` reservation shipped as `llm.models`); an unknown method fails loud at envelope parse rather than getting a not-implemented code.
 - **No protocol version field** — client and host ship together; `host.describe` gains a version negotiation field only when an independently released client exists.
 - **Linux native picker requires desktop tooling** — under the `native` capability, `host.pickDirectory` reports an actionable error when neither Zenity nor KDialog is installed; the browse backend is the composition-level fallback (see the [native backend README](../directory-picker-native/README.md)).
 - **A cold session's `updatedAt` counts a mere pickup as a write (per-file backends only)** — the attached projection excludes the `session/end-seed` boundary, because picking a session up is not activity, but a cold session's `updatedAt` is its log file's mtime and every durable write refreshes that, the boundary included. `agentFor()` resumes a cold session on first touch, so merely opening one in a client writes it. This applies only where `locate()` resolves a per-session artifact, i.e. JSONL; SQLite returns `undefined`, so its cold sessions fall back to `createdAt` and are skewed the other way — too old rather than too new — independently of this boundary. A session touched without being worked in therefore sorts newer than its last real activity until it attaches. Separating the two needs a log read, which is exactly what the mtime path exists to avoid; a stored last-activity field in the index would fix it at the source, scoped in the [last-activity-index Agent Note](../../../.agents/notes/proposed/architecture/2026-07-29-durable-last-activity-index.md).
diff --git a/packages/host/apiproxy/README.zh.md b/packages/host/apiproxy/README.zh.md
index 5bcd310c23..91b3d1d057 100644
--- a/packages/host/apiproxy/README.zh.md
+++ b/packages/host/apiproxy/README.zh.md
@@ -30,6 +30,8 @@ Workspace 列表与 Session 列表是相互独立的重连基线。`workspace.cr
 
 `command.*` 与 `skill.*` 领域向客户端暴露宿主命令注册表和技能目录。每个方法都通过 `sessionId` 寻址一个会话的 Agent（被服务的会话必有 Agent；`command.*` 经由与 `session.*` 相同的路径恢复冷会话，而 `skill.list` 从会话头解析项目根目录，不触碰 Agent 注册表）。`skill.list` 服务于浏览器中由用户选择的模型引用路径，因此仅返回模型和用户均可调用的 skill；该领域没有直接加载 skill 的 RPC。`command.execute` 在宿主侧运行一条斜杠命令行，语义为纯准入：响应报告该行是否解析到处理器，并在解析到时回带铸造的生命周期 `commandId`（将本次确认与流节点关联）；结局经由持久落账并在 mux 流广播的 `command/run`/`command/done` 生命周期事件对承载；载体的请求信号可取消正在运行的处理器。`host/commands-changed` 是目录失效帧：客户端重新拉取 `command.list` 而不是做差分。
 
+`settings.*`、`credentials.*` 与 `llm.*` 领域是配置页协议。settings 领域只服务于已注册可配置提供方所指向的那些 namespace（`ctx.llm.listConfigurableProviders()`）：seam 本身是通用的，但这个面是模型提供方表层，因此目录中无人点名的 namespace 在这里既不会被描述也不可写入，只会得到 `settings-not-exposed`——未注册的 namespace 得到的是同一个答复，因此没有调用方能靠逐个探测把注册表枚举出来。`settings.describe` 为每个已暴露 namespace 提供其序列化 schemastery schema、脱敏后的分层值（resolved/`base`/`user`——字段出现在 `user` 中即标记其被用户覆盖）、`secrets` 槽位列表，以及该分节的 `revision`。`settings.update`/`settings.replace` 写入用户层；`settings.mutate` 则在已存分节上施加路径 op（`set`/`unset`），这是持有脱敏视图的客户端的删除路径——据此重建分节再整体替换，会删掉协议从未回传过的那些机密。任何写入都可携带 `expectedRevision`；过期的期望值会以 `settings-conflict` 连同两个 revision 作答，而不是覆盖先落地的那个写方，其余每种 seam 拒绝则折叠为 `settings-rejected`。secret 角色的值绝不在任何一层搭乘任何响应；secret 只沿一个方向跨越协议——在 `update`/`mutate` 载荷或 `credentials.set` 之内。`credentials.describe` 返回不含值的视图（`configured`/`source`/`writable`），`credentials.set`/`credentials.unset` 则把被遮蔽引用的拒绝映射为 `credential-rejected`。`llm.providers` 把可配置提供方目录与存活路由合并（休眠条目携带 `active: false`；未声明的存活路由追加在后，不带 settings 地址），`llm.models` 则是与会话无关的目录。三个失效帧让每个面无需轮询即保持收敛：`host/settings-changed {ns}`（`settings/document-updated` 透传，因此解析值未变的原始变更同样能到达客户端）、`host/credentials-changed {ref}`（只带引用名，绝不带值），以及 `host/models-changed`——它既由 `llm/adapters-updated` 触发，也由某个已暴露提供方 namespace 的变更触发，因为该提供方的设置正承载着它的目录与端点。浏览器载体把整个配置面（含读取：`settings.describe`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`）限制为仅接受来自回环地址的同源请求——即 `host.pickDirectory` 所在的特权集合。未装 settings 或凭据 provider 的组合会以指名缺失插件、包含解决建议的 `internal` 错误应答这些领域。
+
 ## 载体层（`/client` + 根路径）
 
 `AbstractApiClient` 持有全部协议不变量：签发 rpcId、包装／解包信封、Zod 解析、SSE 帧解码、一元请求超时，以及按微任务批处理的信封观测（`subscribeEnvelopes`）；平台子类只提供 `doFetch` 传输环节。`InProcessApiClient` 以 `toFetchHandler(api)` 为基础，是同构接点：它运行完整的协议序列化与校验路径而不经过网络，供 `dsh -p` headless 模式使用。
@@ -45,7 +47,7 @@ Workspace 列表与 Session 列表是相互独立的重连基线。`workspace.cr
 ## 已知限制与延期工作
 
 - **`respond` 路由已经发布，但待处理交互状态仍属宿主侧工作**：协议形状（POST `/api/respond`、`RpcReceipt`）已经定型；使延迟或重复回答具有明确语义的待处理表位于 `src/api-proxy.ts`，目前仍很精简（只支持问题，不支持审批）。
-- **预留 seam 不进入 `RpcMethodMap`**：`prompt.mode: 'inject'`、`task.list`、`host.listModels` 和描述字段 `hostInstanceId` 都是已记录的预留项；未知方法会在信封解析时直接失败，而不会返回「尚未实现」错误码。
+- **预留 seam 不进入 `RpcMethodMap`**：`prompt.mode: 'inject'`、`task.list` 和描述字段 `hostInstanceId` 都是已记录的预留项（先前预留的 `host.listModels` 已作为 `llm.models` 交付）；未知方法会在信封解析时直接失败，而不会返回「尚未实现」错误码。
 - **没有协议版本字段**：客户端与宿主一同发布；只有出现独立发布的客户端后，`host.describe` 才会增加版本协商字段。
 - **Linux 原生选择器依赖桌面工具**：在 `native` 能力下，Zenity 和 KDialog 均未安装时，`host.pickDirectory` 会给出包含解决建议的错误提示；组合层面的回退是 browse 后端（见 [native 后端 README](../directory-picker-native/README.md)）。
 - **冷会话的 `updatedAt` 会把一次单纯的拾起算作写入（仅逐文件后端）**：已附加投影排除了 `session/end-seed` 边界，因为接手一个会话不算活动；但冷会话的 `updatedAt` 取自其日志文件的 mtime，而每一次持久写入都会刷新它，包括这条边界。`agentFor()` 会在首次触碰时恢复一个冷会话，因此在客户端里仅仅打开一个会话就会写入它。这只适用于 `locate()` 能解析出逐会话产物的场景，即 JSONL；SQLite 返回 `undefined`，因此它的冷会话回退到 `createdAt`，偏差方向相反——偏旧而不是偏新——且与这条边界无关。于是一个被触碰过却没有在里面工作过的会话，在重新附加之前会按晚于其最后一次真实活动的时间排序。要把两者区分开需要读取日志，而这恰恰是 mtime 路径存在的目的；在索引中存储一个最后活动字段可以从源头修好它，范围见[最后活动索引 Agent Note（agent 决策记录）](../../../.agents/notes/proposed/architecture/2026-07-29-durable-last-activity-index.md)。
diff --git a/packages/host/apiproxy/package.json b/packages/host/apiproxy/package.json
index 8b4a895774..8a8aa5bdea 100644
--- a/packages/host/apiproxy/package.json
+++ b/packages/host/apiproxy/package.json
@@ -43,6 +43,7 @@
     "@deepseek-ai/dsh-agent": "workspace:^",
     "@deepseek-ai/dsh-brand": "workspace:^",
     "@deepseek-ai/dsh-commands": "workspace:^",
+    "@deepseek-ai/dsh-credentials": "workspace:^",
     "@deepseek-ai/dsh-goal": "workspace:^",
     "@deepseek-ai/dsh-host-directory-picker": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
@@ -52,6 +53,7 @@
     "@deepseek-ai/dsh-session-projection": "workspace:^",
     "@deepseek-ai/dsh-session-projection-cache": "workspace:^",
     "@deepseek-ai/dsh-session-title": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^",
     "@deepseek-ai/dsh-skill": "workspace:^",
     "@deepseek-ai/dsh-tools": "workspace:^",
     "@deepseek-ai/dsh-user-approval": "workspace:^",
diff --git a/packages/host/apiproxy/src/api-proxy.ts b/packages/host/apiproxy/src/api-proxy.ts
index bcd9873263..cae0f14d9b 100644
--- a/packages/host/apiproxy/src/api-proxy.ts
+++ b/packages/host/apiproxy/src/api-proxy.ts
@@ -25,9 +25,9 @@ import {
 // Type-only: brings the `ctx.tools` Context merge into this program (viewFor reads presenters).
 import type {} from '@deepseek-ai/dsh-tools'
 import type {
-  ApiProxy, GoalRef, HistoryEntry, HostFrame, ModelCatalogFailure, ModelProviderGroup, ModelReasoning,
-  MuxFrame, QuestionResponsePayload, SessionProjectionsBlock, SessionSummary, ToolEventView,
-  WorkspaceId, WorkspaceView,
+  ApiProxy, CredentialView, GoalRef, HistoryEntry, HostFrame, ModelCatalogFailure, ModelProviderGroup,
+  ModelReasoning, MuxFrame, QuestionResponsePayload, SessionProjectionsBlock, SessionSummary,
+  SettingsNamespaceView, ToolEventView, WorkspaceId, WorkspaceView,
 } from './api/index.ts'
 // Type-only: resolves `ctx.get('sessionProjections')` to the projection registry.
 import type {} from '@deepseek-ai/dsh-session-projection'
@@ -39,6 +39,12 @@ import type { GoalRef as CoreGoalRef } from '@deepseek-ai/dsh-goal'
 // Type-only edges: resolve `ctx.get('commands')`, the `commands/change` event, and `ctx.get('skills')`.
 import type {} from '@deepseek-ai/dsh-commands'
 import type {} from '@deepseek-ai/dsh-skill'
+// The settings/credentials seams: brand guards run at this wire boundary; the
+// service reads stay optional (`ctx.get`) so a composition without either
+// provider still serves every other domain.
+import { SettingsConflictError, settingsNamespace } from '@deepseek-ai/dsh-settings'
+import type { SettingsDescriptor, SettingsNamespace, SettingsPathOp } from '@deepseek-ai/dsh-settings'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
 // Value edge: the rename impl narrows the title service's validation failure; the import also resolves `ctx.get('sessionTitle')`.
 import { SessionTitleInvalidError } from '@deepseek-ai/dsh-session-title'
 import type { CallId } from '@deepseek-ai/dsh-llm/brand'
@@ -101,6 +107,82 @@ function ok<T>(request: RpcRequest<unknown>, value: T): RpcResponse<T> {
   return { rpcId: request.rpcId, result: { ok: true, value } }
 }
 
+/**
+ * Build the provider/model catalog over every registered route. Shared by the
+ * session-scoped `session.models` (which passes the session's current target
+ * so an unlisted current model still renders selectable) and the host-scoped
+ * `llm.models` (no current). Per-provider failures ride `failures` without
+ * failing the sound groups; groups that advertise nothing are dropped.
+ */
+async function buildModelCatalog(
+  ctx: Context,
+  current?: { provider: string; model: string },
+): Promise<{ groups: ModelProviderGroup[]; failures: ModelCatalogFailure[] }> {
+  const catalog = await Promise.all(ctx.llm.listProviders().map(async (provider) => {
+    try {
+      const advertised = await ctx.llm.listModels(provider.id)
+      const models = [...advertised]
+      if (
+        current !== undefined
+        && provider.id === current.provider
+        && !models.some(model => model.id === current.model)
+      ) {
+        models.push({
+          provider: provider.id,
+          id: current.model,
+          name: current.model,
+        })
+      }
+      const entries = await Promise.all(models.map(async (model) => {
+        const resolved = await ctx.llm.resolveModelInfo(provider.id, model.id)
+        const reasoning: ModelReasoning | undefined = resolved.reasoning === undefined
+          ? undefined
+          : {
+            efforts: resolved.reasoning.efforts.map(effort => ({
+              id: effort.id,
+              name: effort.name,
+              ...effort.description === undefined
+                ? {}
+                : { description: effort.description },
+            })),
+            ...resolved.reasoning.defaultEffort === undefined
+              ? {}
+              : { defaultEffort: resolved.reasoning.defaultEffort },
+          }
+        return {
+          id: model.id,
+          name: model.name,
+          ...model.description === undefined ? {} : { description: model.description },
+          ...current !== undefined
+            && provider.id === current.provider
+            && model.id === current.model
+            && !advertised.some(candidate => candidate.id === current.model)
+            ? { unlisted: true as const }
+            : {},
+          ...reasoning === undefined ? {} : { reasoning },
+        }
+      }))
+      const group: ModelProviderGroup = {
+        id: provider.id,
+        name: provider.name,
+        models: entries,
+      }
+      return { kind: 'group' as const, group }
+    } catch (error: unknown) {
+      const failure: ModelCatalogFailure = {
+        id: provider.id,
+        name: provider.name,
+        message: error instanceof Error ? error.message : String(error),
+      }
+      return { kind: 'failure' as const, failure }
+    }
+  }))
+  return {
+    groups: catalog.flatMap(item => item.kind === 'group' ? [item.group] : []).filter(group => group.models.length > 0),
+    failures: catalog.flatMap(item => item.kind === 'failure' ? [item.failure] : []),
+  }
+}
+
 /** Wrap an error result echoing the request's rpcId. */
 function err<T>(request: RpcRequest<unknown>, error: RpcError): RpcResponse<T> {
   return { rpcId: request.rpcId, result: { ok: false, error } }
@@ -912,6 +994,109 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
     }
   }
 
+  /** Missing-service report shared by the settings domain (skills-domain stance). */
+  function settingsAbsent(): RpcError {
+    return { code: 'internal', message: 'settings service is absent: this deployment does not mount a settings provider (e.g. @deepseek-ai/dsh-settings-local) in its composition', details: {} }
+  }
+
+  /** Missing-service report shared by the credentials domain. */
+  function credentialsAbsent(): RpcError {
+    return { code: 'internal', message: 'credentials service is absent: this deployment does not mount a credential provider (e.g. @deepseek-ai/dsh-credentials-local) in its composition', details: {} }
+  }
+
+  /** Map one redacted seam descriptor to its wire view. */
+  function namespaceView(descriptor: SettingsDescriptor): SettingsNamespaceView {
+    return {
+      ns: String(descriptor.ns),
+      schema: descriptor.schema,
+      value: descriptor.value,
+      ...descriptor.base === undefined ? {} : { base: descriptor.base },
+      ...descriptor.user === undefined ? {} : { user: descriptor.user },
+      applies: descriptor.applies,
+      secrets: (descriptor.secrets ?? []).map(secret => ({ path: [...secret.path], set: secret.set })),
+      revision: descriptor.revision,
+    }
+  }
+
+  /**
+   * The settings namespaces this proxy serves: exactly those a registered
+   * configurable provider addresses. The settings seam itself is general —
+   * any plugin may register a namespace for its own configuration — but the
+   * Web configuration plane is scoped to model providers, and that boundary
+   * has to be enforced here rather than assumed from the current plugin set.
+   * Without it, every future `settings.register()` would silently become
+   * remotely readable and writable configuration.
+   */
+  function exposedNamespaces(): Set<string> {
+    return new Set(ctx.llm.listConfigurableProviders().map(entry => entry.settingsNs))
+  }
+
+  /** Refuse a namespace outside the model-provider boundary, naming why. */
+  function notExposed(request: RpcRequest<unknown>, ns: string): RpcResponse<SettingsNamespaceView> {
+    return err(request, {
+      code: 'settings-not-exposed',
+      message: `settings namespace "${ns}" is not exposed to configuration clients; only a namespace a registered model provider addresses is`,
+      details: { ns },
+    })
+  }
+
+  /**
+   * Run one settings write (merge or wholesale replace) and acknowledge with
+   * the namespace's new redacted view. A namespace outside the model-provider
+   * boundary is refused before the seam is touched; every seam refusal —
+   * unknown or invalid namespace, read-only provider, schema validation,
+   * storage — becomes one `settings-rejected` carrying the seam's own message.
+   */
+  async function settingsWrite(
+    request: RpcRequest<unknown>,
+    ns: string,
+    mode: 'update' | 'replace' | 'mutate',
+    section: object,
+    expectedRevision?: number,
+  ): Promise<RpcResponse<SettingsNamespaceView>> {
+    const settings = ctx.get('settings')
+    if (settings === undefined) return err(request, settingsAbsent())
+    const rejected = (error: unknown): RpcResponse<SettingsNamespaceView> => {
+      // A stale writer is its own outcome, not a malformed request: the client
+      // must re-read and re-apply rather than treat the write as invalid.
+      if (error instanceof SettingsConflictError) {
+        return err(request, {
+          code: 'settings-conflict',
+          message: error.message,
+          details: { ns, expected: error.expected, actual: error.actual },
+        })
+      }
+      return err(request, {
+        code: 'settings-rejected',
+        message: error instanceof Error ? error.message : String(error),
+        details: { ns },
+      })
+    }
+    let branded: SettingsNamespace
+    try {
+      branded = settingsNamespace(ns)
+    } catch (error: unknown) {
+      // A malformed name is a client bug, reported as such; it could never be
+      // in the exposed set either, so naming the real fault costs no ground.
+      return rejected(error)
+    }
+    if (!exposedNamespaces().has(ns)) return notExposed(request, ns)
+    try {
+      if (mode === 'update') await settings.update(branded, section, expectedRevision)
+      else if (mode === 'replace') await settings.replace(branded, section, expectedRevision)
+      else await settings.mutate(branded, section as SettingsPathOp[], expectedRevision)
+    } catch (error: unknown) {
+      return rejected(error)
+    }
+    const descriptor = settings.describe({ redactSecrets: true }).find(candidate => candidate.ns === branded)
+    if (descriptor === undefined) {
+      // The write committed but the namespace vanished before this read: only
+      // a concurrent registrant disposal can produce it.
+      return err(request, { code: 'internal', message: `settings namespace "${ns}" was disposed after the ${mode}`, details: {} })
+    }
+    return ok(request, namespaceView(descriptor))
+  }
+
   return {
     sessions: {
       // Attached sessions summarize from memory; persisted-but-unattached (cold)
@@ -1022,70 +1207,8 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
         const found = await agentFor(sessionId)
         if ('error' in found) return err(request, found.error)
         const current = targetFor(found.agent).current
-        const catalog = await Promise.all(ctx.llm.listProviders().map(async (provider) => {
-          try {
-            const advertised = await ctx.llm.listModels(provider.id)
-            const models = [...advertised]
-            if (
-              provider.id === current.provider
-              && !models.some(model => model.id === current.model)
-            ) {
-              models.push({
-                provider: provider.id,
-                id: current.model,
-                name: current.model,
-              })
-            }
-            const entries = await Promise.all(models.map(async (model) => {
-              const resolved = await ctx.llm.resolveModelInfo(provider.id, model.id)
-              const reasoning: ModelReasoning | undefined = resolved.reasoning === undefined
-                ? undefined
-                : {
-                  efforts: resolved.reasoning.efforts.map(effort => ({
-                    id: effort.id,
-                    name: effort.name,
-                    ...effort.description === undefined
-                      ? {}
-                      : { description: effort.description },
-                  })),
-                  ...resolved.reasoning.defaultEffort === undefined
-                    ? {}
-                    : { defaultEffort: resolved.reasoning.defaultEffort },
-                }
-              return {
-                id: model.id,
-                name: model.name,
-                ...model.description === undefined ? {} : { description: model.description },
-                ...provider.id === current.provider
-                  && model.id === current.model
-                  && !advertised.some(candidate => candidate.id === current.model)
-                  ? { unlisted: true as const }
-                  : {},
-                ...reasoning === undefined ? {} : { reasoning },
-              }
-            }))
-            const group: ModelProviderGroup = {
-              id: provider.id,
-              name: provider.name,
-              models: entries,
-            }
-            return { kind: 'group' as const, group }
-          } catch (error: unknown) {
-            const failure: ModelCatalogFailure = {
-              id: provider.id,
-              name: provider.name,
-              message: error instanceof Error ? error.message : String(error),
-            }
-            return { kind: 'failure' as const, failure }
-          }
-        }))
-        const groups = catalog.flatMap(item => item.kind === 'group' ? [item.group] : [])
-        const failures = catalog.flatMap(item => item.kind === 'failure' ? [item.failure] : [])
-        return ok(request, {
-          current: { ...current },
-          groups: groups.filter(group => group.models.length > 0),
-          failures,
-        })
+        const { groups, failures } = await buildModelCatalog(ctx, current)
+        return ok(request, { current: { ...current }, groups, failures })
       },
 
       async selectModel(request) {
@@ -1621,6 +1744,105 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
       },
     },
 
+    settings: {
+      describe(request) {
+        const settings = ctx.get('settings')
+        if (settings === undefined) return Promise.resolve(err(request, settingsAbsent()))
+        const exposed = exposedNamespaces()
+        return Promise.resolve(ok(request, {
+          writable: settings.writable,
+          namespaces: settings.describe({ redactSecrets: true })
+            .filter(descriptor => exposed.has(String(descriptor.ns)))
+            .map(namespaceView),
+        }))
+      },
+      update: request => settingsWrite(request, request.payload.ns, 'update', request.payload.patch, request.payload.expectedRevision),
+      replace: request => settingsWrite(request, request.payload.ns, 'replace', request.payload.section, request.payload.expectedRevision),
+      mutate: request => settingsWrite(request, request.payload.ns, 'mutate', request.payload.ops, request.payload.expectedRevision),
+    },
+
+    credentials: {
+      async describe(request) {
+        const credentials = ctx.get('credentials')
+        if (credentials === undefined) return err(request, credentialsAbsent())
+        const entries = await Promise.all(request.payload.refs.map(async (ref) => {
+          const info = await credentials.describe(credentialRef(ref))
+          const view: CredentialView = {
+            configured: info.configured,
+            ...info.source === undefined ? {} : { source: info.source },
+            writable: info.writable,
+          }
+          return [ref, view] as const
+        }))
+        return ok(request, { credentials: Object.fromEntries(entries) })
+      },
+
+      async set(request) {
+        const credentials = ctx.get('credentials')
+        if (credentials === undefined) return err(request, credentialsAbsent())
+        const { ref, value } = request.payload
+        try {
+          await credentials.set(credentialRef(ref), value)
+        } catch (error: unknown) {
+          return err(request, {
+            code: 'credential-rejected',
+            message: error instanceof Error ? error.message : String(error),
+            details: { ref },
+          })
+        }
+        return ok(request, {})
+      },
+
+      async unset(request) {
+        const credentials = ctx.get('credentials')
+        if (credentials === undefined) return err(request, credentialsAbsent())
+        const { ref } = request.payload
+        try {
+          await credentials.unset(credentialRef(ref))
+        } catch (error: unknown) {
+          return err(request, {
+            code: 'credential-rejected',
+            message: error instanceof Error ? error.message : String(error),
+            details: { ref },
+          })
+        }
+        return ok(request, {})
+      },
+    },
+
+    llm: {
+      providers(request) {
+        const registered = ctx.llm.listProviders()
+        const active = new Set(registered.map(provider => provider.id))
+        const directory = ctx.llm.listConfigurableProviders()
+        const declared = new Set(directory.map(entry => entry.provider))
+        const views = directory.map(entry => ({
+          provider: entry.provider,
+          displayName: entry.displayName,
+          settingsNs: entry.settingsNs,
+          settingsPath: [...entry.settingsPath],
+          active: active.has(entry.provider),
+        }))
+        // Routes registered without a directory declaration still appear —
+        // they exist and serve models — just with no settings address.
+        for (const provider of registered) {
+          if (declared.has(provider.id)) continue
+          views.push({
+            provider: provider.id,
+            displayName: provider.name,
+            settingsNs: '',
+            settingsPath: [],
+            active: true,
+          })
+        }
+        return Promise.resolve(ok(request, { providers: views }))
+      },
+
+      async models(request) {
+        return ok(request, await buildModelCatalog(ctx))
+      },
+    },
+
     events: {
       mux(_request, signal) {
         const queue = new FrameQueue<RpcRequest<MuxFrame>>()
@@ -1751,6 +1973,23 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
           ctx.on('commands/change', () => {
             queue.push(frame({ type: 'host/commands-changed' }))
           }),
+          ctx.on('settings/document-updated', (ns) => {
+            // The RAW-section event, not the resolved one: a field going from
+            // inherited to overridden leaves the resolved value equal, and a
+            // configuration client still has to re-read (its held revision is
+            // stale, and the field's meaning changed).
+            queue.push(frame({ type: 'host/settings-changed', ns: String(ns) }))
+            // A provider's own settings carry its model catalog and endpoint,
+            // so a change there invalidates the model list even when the route
+            // set is untouched — `llm/adapters-updated` alone misses it.
+            if (exposedNamespaces().has(String(ns))) queue.push(frame({ type: 'host/models-changed' }))
+          }),
+          ctx.on('credentials/updated', (ref) => {
+            queue.push(frame({ type: 'host/credentials-changed', ref: String(ref) }))
+          }),
+          ctx.on('llm/adapters-updated', () => {
+            queue.push(frame({ type: 'host/models-changed' }))
+          }),
         ]
         return queue.iterate(signal, () => { for (const dispose of disposers) dispose() })
       },
diff --git a/packages/host/apiproxy/src/api/credentials.schema.ts b/packages/host/apiproxy/src/api/credentials.schema.ts
new file mode 100644
index 0000000000..b0ce3fe01b
--- /dev/null
+++ b/packages/host/apiproxy/src/api/credentials.schema.ts
@@ -0,0 +1,48 @@
+/**
+ * credentials domain zod schemas (names derived from map keys:
+ * credentialsDescribeRequestSchema / credentialsDescribeValueSchema / …).
+ * The reference-name pattern mirrors the seam's `credentialRef` guard so an
+ * invalid name fails as `bad-request` before reaching the service.
+ */
+
+import { z } from 'zod'
+import type { RequestPayload, ResponseValue } from './rpc-map.ts'
+import type { Wire } from './rpc.schema.ts'
+import type { CredentialView } from './credentials.ts'
+
+/** POSIX-portable environment-variable name (the seam's `credentialRef` pattern). */
+export const credentialRefNameSchema = z.string().regex(/^[A-Za-z_][A-Za-z0-9_]*$/)
+
+/** CredentialView entry of credentials.describe. */
+export const credentialViewSchema = z.object({
+  configured: z.boolean(),
+  source: z.string().optional(),
+  writable: z.boolean(),
+}) satisfies z.ZodType<Wire<CredentialView>>
+
+/** credentials.describe request payload. */
+export const credentialsDescribeRequestSchema = z.object({
+  refs: z.array(credentialRefNameSchema).max(64),
+}) satisfies z.ZodType<Wire<RequestPayload<'credentials.describe'>>>
+
+/** credentials.describe response value. */
+export const credentialsDescribeValueSchema = z.object({
+  credentials: z.record(z.string(), credentialViewSchema),
+}) satisfies z.ZodType<Wire<ResponseValue<'credentials.describe'>>>
+
+/** credentials.set request payload: the one direction a value crosses this wire. */
+export const credentialsSetRequestSchema = z.object({
+  ref: credentialRefNameSchema,
+  value: z.string().min(1),
+}) satisfies z.ZodType<Wire<RequestPayload<'credentials.set'>>>
+
+/** credentials.set response value. */
+export const credentialsSetValueSchema = z.object({}) satisfies z.ZodType<Wire<ResponseValue<'credentials.set'>>>
+
+/** credentials.unset request payload. */
+export const credentialsUnsetRequestSchema = z.object({
+  ref: credentialRefNameSchema,
+}) satisfies z.ZodType<Wire<RequestPayload<'credentials.unset'>>>
+
+/** credentials.unset response value. */
+export const credentialsUnsetValueSchema = z.object({}) satisfies z.ZodType<Wire<ResponseValue<'credentials.unset'>>>
diff --git a/packages/host/apiproxy/src/api/credentials.ts b/packages/host/apiproxy/src/api/credentials.ts
new file mode 100644
index 0000000000..b5b59ca059
--- /dev/null
+++ b/packages/host/apiproxy/src/api/credentials.ts
@@ -0,0 +1,44 @@
+/**
+ * credentials domain contract: the web face of the credential-reference seam
+ * (`ctx.credentials`). Reads are structurally value-free — a credential view
+ * carries configured/source/writable and has no slot for the value — and the
+ * value crosses the wire in exactly one direction, inside `credentials.set`.
+ * There is no enumeration method by design: clients learn which references
+ * exist from settings schemas and values (`apiKeyEnv` fields).
+ */
+
+import type { RpcRequest, RpcResponse } from './rpc.ts'
+
+/** Wire view of one credential reference's state. */
+export interface CredentialView {
+  /** Whether any layer currently supplies a non-empty value. */
+  configured: boolean
+  /** Winning layer when configured (`env`, `file`, …); provider vocabulary. */
+  source?: string
+  /** Whether `credentials.set`/`credentials.unset` can affect this reference. */
+  writable: boolean
+}
+
+/** Credentials-domain unary methods (the map keys credentials.* of RpcMethodMap). */
+export interface CredentialsApi {
+  /**
+   * Describe the named references (batch): configured state, winning source,
+   * and writability — never values. An invalid reference name is a
+   * `bad-request`; an unknown-but-valid one describes as unconfigured.
+   */
+  describe(request: RpcRequest<{ refs: string[] }>): Promise<RpcResponse<{ credentials: Record<string, CredentialView> }>>
+
+  /**
+   * Store one credential value in the writable layer. Rejected with
+   * `credential-rejected` while a read-only layer (the live environment)
+   * shadows the reference — the write would otherwise appear to succeed while
+   * resolution keeps returning the shadowing value.
+   */
+  set(request: RpcRequest<{ ref: string; value: string }>): Promise<RpcResponse<{}>>
+
+  /**
+   * Remove one credential from the writable layer; same shadowing rejection
+   * as `set`. Unsetting an absent reference succeeds (idempotent).
+   */
+  unset(request: RpcRequest<{ ref: string }>): Promise<RpcResponse<{}>>
+}
diff --git a/packages/host/apiproxy/src/api/events.schema.ts b/packages/host/apiproxy/src/api/events.schema.ts
index 43b7a147e4..186c189879 100644
--- a/packages/host/apiproxy/src/api/events.schema.ts
+++ b/packages/host/apiproxy/src/api/events.schema.ts
@@ -72,5 +72,8 @@ export const hostFrameSchema = z.discriminatedUnion('type', [
   z.object({ type: z.literal('host/workspace-changed'), workspace: workspaceViewSchema }),
   z.object({ type: z.literal('host/workspace-removed'), workspaceId: workspaceIdSchema }),
   z.object({ type: z.literal('host/commands-changed') }),
+  z.object({ type: z.literal('host/settings-changed'), ns: z.string() }),
+  z.object({ type: z.literal('host/credentials-changed'), ref: z.string() }),
+  z.object({ type: z.literal('host/models-changed') }),
   z.object({ type: z.literal('stream/error'), error: rpcErrorSchema }),
 ]) as unknown as z.ZodType<HostFrame>
diff --git a/packages/host/apiproxy/src/api/events.ts b/packages/host/apiproxy/src/api/events.ts
index ad541b4e4d..d678f2f911 100644
--- a/packages/host/apiproxy/src/api/events.ts
+++ b/packages/host/apiproxy/src/api/events.ts
@@ -116,4 +116,23 @@ export type HostFrame =
    * background rather than diffing.
    */
   | { type: 'host/commands-changed' }
+  /**
+   * One settings namespace's resolved value changed (`settings/updated`
+   * passthrough) — an RPC write, an external `settings.yaml` edit, or a
+   * provider reload all converge here. Clients refetch `settings.describe`;
+   * values never ride the frame (they would need redaction and can go stale).
+   */
+  | { type: 'host/settings-changed'; ns: string }
+  /**
+   * One credential reference's state changed (`credentials/updated`
+   * passthrough): a set/unset over this wire or an external `.env` edit.
+   * The ref is an environment-variable NAME — never a value.
+   */
+  | { type: 'host/credentials-changed'; ref: string }
+  /**
+   * The provider topology changed (`llm/adapters-updated` passthrough):
+   * routes registered or dropped, or the configurable directory moved. Pure
+   * invalidation: clients refetch `llm.providers`/`llm.models`/`session.models`.
+   */
+  | { type: 'host/models-changed' }
   | { type: 'stream/error'; error: RpcError }
diff --git a/packages/host/apiproxy/src/api/index.ts b/packages/host/apiproxy/src/api/index.ts
index 0372c8cc30..4eda35007d 100644
--- a/packages/host/apiproxy/src/api/index.ts
+++ b/packages/host/apiproxy/src/api/index.ts
@@ -11,6 +11,9 @@ import type { CommandsApi } from './commands.ts'
 import type { SkillsApi } from './skills.ts'
 import type { EventsApi } from './events.ts'
 import type { GoalsApi } from './goals.ts'
+import type { SettingsApi } from './settings.ts'
+import type { CredentialsApi } from './credentials.ts'
+import type { LlmApi } from './llm.ts'
 import type { ClientResponse, RpcReceipt } from './rpc.ts'
 
 /** Root interface of the unified API surface. New client-request domain = one new file pair + one field here + one map row. */
@@ -22,6 +25,9 @@ export interface ApiProxy {
   skills: SkillsApi
   events: EventsApi
   goals: GoalsApi
+  settings: SettingsApi
+  credentials: CredentialsApi
+  llm: LlmApi
   /** Response entry for server-requests (client-response, echoing their rpcId); not a domain method (four-quadrant model). */
   respond(message: ClientResponse): Promise<RpcReceipt>
 }
@@ -37,6 +43,9 @@ export type { CommandsApi, CommandDescriptor } from './commands.ts'
 export type { SkillsApi, SkillEntry } from './skills.ts'
 export type { EventsApi, MuxFrame, HostFrame, QueuedInboxItem, ToolCallView, ToolEventView, ToolResultView } from './events.ts'
 export type { GoalsApi, GoalId, GoalRef } from './goals.ts'
+export type { SettingsApi, SettingsNamespaceView, SettingsPathOpView, SettingsSecretView } from './settings.ts'
+export type { CredentialsApi, CredentialView } from './credentials.ts'
+export type { ConfigurableProviderView, LlmApi } from './llm.ts'
 export type { ApprovalResponsePayload } from './approvals.ts'
 export type { QuestionResponsePayload } from './questions.ts'
 
diff --git a/packages/host/apiproxy/src/api/llm.schema.ts b/packages/host/apiproxy/src/api/llm.schema.ts
new file mode 100644
index 0000000000..4d86302c9f
--- /dev/null
+++ b/packages/host/apiproxy/src/api/llm.schema.ts
@@ -0,0 +1,36 @@
+/**
+ * llm domain zod schemas (names derived from map keys: llmProvidersRequestSchema /
+ * llmProvidersValueSchema / llmModelsRequestSchema / llmModelsValueSchema).
+ */
+
+import { z } from 'zod'
+import type { RequestPayload, ResponseValue } from './rpc-map.ts'
+import type { Wire } from './rpc.schema.ts'
+import type { ConfigurableProviderView } from './llm.ts'
+import { modelCatalogFailureSchema, modelProviderGroupSchema } from './sessions.schema.ts'
+
+/** ConfigurableProviderView row of llm.providers. */
+export const configurableProviderViewSchema = z.object({
+  provider: z.string().min(1),
+  displayName: z.string().min(1),
+  settingsNs: z.string(),
+  settingsPath: z.array(z.string()),
+  active: z.boolean(),
+}) satisfies z.ZodType<Wire<ConfigurableProviderView>>
+
+/** llm.providers request payload. */
+export const llmProvidersRequestSchema = z.object({}) satisfies z.ZodType<Wire<RequestPayload<'llm.providers'>>>
+
+/** llm.providers response value. */
+export const llmProvidersValueSchema = z.object({
+  providers: z.array(configurableProviderViewSchema),
+}) satisfies z.ZodType<Wire<ResponseValue<'llm.providers'>>>
+
+/** llm.models request payload. */
+export const llmModelsRequestSchema = z.object({}) satisfies z.ZodType<Wire<RequestPayload<'llm.models'>>>
+
+/** llm.models response value. */
+export const llmModelsValueSchema = z.object({
+  groups: z.array(modelProviderGroupSchema),
+  failures: z.array(modelCatalogFailureSchema),
+}) satisfies z.ZodType<Wire<ResponseValue<'llm.models'>>>
diff --git a/packages/host/apiproxy/src/api/llm.ts b/packages/host/apiproxy/src/api/llm.ts
new file mode 100644
index 0000000000..59a21cf12a
--- /dev/null
+++ b/packages/host/apiproxy/src/api/llm.ts
@@ -0,0 +1,43 @@
+/**
+ * llm domain contract: host-scoped provider topology for configuration
+ * surfaces. `llm.providers` merges the configurable-provider directory
+ * (which providers CAN be configured, and where their settings live) with the
+ * live route registry; `llm.models` is the session-independent model catalog
+ * (`session.models` minus the per-session current/unlisted logic). Both
+ * invalidate on the `host/models-changed` frame.
+ */
+
+import type { RpcRequest, RpcResponse } from './rpc.ts'
+import type { ModelCatalogFailure, ModelProviderGroup } from './sessions.ts'
+
+/** Wire view of one configurable provider. */
+export interface ConfigurableProviderView {
+  /** Provider route key (`deepseek-official`, `openai`, …). */
+  provider: string
+  /** Human-readable name for configuration surfaces. */
+  displayName: string
+  /** Settings namespace whose section configures this provider. */
+  settingsNs: string
+  /** Path from that section's root to the provider's profile object (empty = whole section). */
+  settingsPath: string[]
+  /** Whether the route is currently registered (its models are requestable). */
+  active: boolean
+}
+
+/** Llm-domain unary methods (the map keys llm.* of RpcMethodMap). */
+export interface LlmApi {
+  /**
+   * List every configurable provider with its live/dormant state, in
+   * directory declaration order. Routes registered outside the directory
+   * (an adapter that never declared configurability) are appended with their
+   * registration identity and no settings address.
+   */
+  providers(request: RpcRequest<{}>): Promise<RpcResponse<{ providers: ConfigurableProviderView[] }>>
+
+  /**
+   * Host-scoped model catalog over every registered provider route: the
+   * settings surface's models view, needing no session. Per-provider listing
+   * failures ride `failures` without failing the sound groups.
+   */
+  models(request: RpcRequest<{}>): Promise<RpcResponse<{ groups: ModelProviderGroup[]; failures: ModelCatalogFailure[] }>>
+}
diff --git a/packages/host/apiproxy/src/api/rpc-map.ts b/packages/host/apiproxy/src/api/rpc-map.ts
index 54c68e9c1c..a13a1211dc 100644
--- a/packages/host/apiproxy/src/api/rpc-map.ts
+++ b/packages/host/apiproxy/src/api/rpc-map.ts
@@ -10,6 +10,9 @@ import type { WorkspaceApi } from './workspace.ts'
 import type { CommandsApi } from './commands.ts'
 import type { SkillsApi } from './skills.ts'
 import type { GoalsApi } from './goals.ts'
+import type { SettingsApi } from './settings.ts'
+import type { CredentialsApi } from './credentials.ts'
+import type { LlmApi } from './llm.ts'
 import type { RpcResponse } from './rpc.ts'
 
 /**
@@ -47,6 +50,15 @@ export interface RpcMethodMap {
   'goal.resume': GoalsApi['resume']
   'goal.complete': GoalsApi['complete']
   'goal.clear': GoalsApi['clear']
+  'settings.describe': SettingsApi['describe']
+  'settings.update': SettingsApi['update']
+  'settings.replace': SettingsApi['replace']
+  'settings.mutate': SettingsApi['mutate']
+  'credentials.describe': CredentialsApi['describe']
+  'credentials.set': CredentialsApi['set']
+  'credentials.unset': CredentialsApi['unset']
+  'llm.providers': LlmApi['providers']
+  'llm.models': LlmApi['models']
 }
 
 /** Business request payload of method K (reaches through the RpcRequest narrow form to payload). */
diff --git a/packages/host/apiproxy/src/api/rpc.schema.ts b/packages/host/apiproxy/src/api/rpc.schema.ts
index 95701f6deb..f0d5fb6840 100644
--- a/packages/host/apiproxy/src/api/rpc.schema.ts
+++ b/packages/host/apiproxy/src/api/rpc.schema.ts
@@ -50,6 +50,10 @@ export const rpcErrorSchema: z.ZodType<RpcError> = z.discriminatedUnion('code',
   z.object({ code: z.literal('queue-item-not-found'), message: z.string(), details: z.object({ itemId: z.string() }) }),
   z.object({ code: z.literal('command-error'), message: z.string(), details: z.object({}) }),
   z.object({ code: z.literal('unknown-command'), message: z.string(), details: z.object({}) }),
+  z.object({ code: z.literal('settings-rejected'), message: z.string(), details: z.object({ ns: z.string() }) }),
+  z.object({ code: z.literal('settings-not-exposed'), message: z.string(), details: z.object({ ns: z.string() }) }),
+  z.object({ code: z.literal('settings-conflict'), message: z.string(), details: z.object({ ns: z.string(), expected: z.number(), actual: z.number() }) }),
+  z.object({ code: z.literal('credential-rejected'), message: z.string(), details: z.object({ ref: z.string() }) }),
   z.object({ code: z.literal('title-invalid'), message: z.string(), details: z.object({ sessionId: z.string() }) }),
   z.object({ code: z.literal('fork-unavailable'), message: z.string(), details: z.object({ sessionId: z.string() }) }),
   z.object({ code: z.literal('internal'), message: z.string(), details: z.object({}) }),
diff --git a/packages/host/apiproxy/src/api/rpc.ts b/packages/host/apiproxy/src/api/rpc.ts
index 720db149c1..34cd80d5da 100644
--- a/packages/host/apiproxy/src/api/rpc.ts
+++ b/packages/host/apiproxy/src/api/rpc.ts
@@ -50,6 +50,25 @@ export interface RpcErrorDetailsMap {
   'command-error': {}
   /** A leading-/ prompt named no registered command; the message names the token. */
   'unknown-command': {}
+  /**
+   * A settings write was refused (schema validation, unknown namespace,
+   * read-only provider, or storage failure); the message is the seam's text.
+   */
+  'settings-rejected': { ns: string }
+  /**
+   * A settings namespace exists in the seam but is outside the configuration
+   * plane's model-provider boundary, so this proxy neither reads nor writes
+   * it; the message names the namespace.
+   */
+  'settings-not-exposed': { ns: string }
+  /**
+   * A settings write carried an `expectedRevision` the namespace has already
+   * moved past: another writer (tab, editor, or an external file edit) landed
+   * first. The details carry both revisions so a client can re-read and retry.
+   */
+  'settings-conflict': { ns: string; expected: number; actual: number }
+  /** A credential write was refused (read-only shadowing layer or storage failure); the message is the seam's own text. */
+  'credential-rejected': { ref: string }
   'title-invalid': { sessionId: SessionId }
   'fork-unavailable': { sessionId: SessionId }
   'internal': {}
diff --git a/packages/host/apiproxy/src/api/settings.schema.ts b/packages/host/apiproxy/src/api/settings.schema.ts
new file mode 100644
index 0000000000..56ac16f93d
--- /dev/null
+++ b/packages/host/apiproxy/src/api/settings.schema.ts
@@ -0,0 +1,72 @@
+/**
+ * settings domain zod schemas (names derived from map keys: settingsDescribeRequestSchema /
+ * settingsDescribeValueSchema / settingsUpdate* / settingsReplace*).
+ */
+
+import { z } from 'zod'
+import type { RequestPayload, ResponseValue } from './rpc-map.ts'
+import type { Wire } from './rpc.schema.ts'
+import type { SettingsNamespaceView, SettingsPathOpView, SettingsSecretView } from './settings.ts'
+
+/** One redacted secret slot. */
+export const settingsSecretViewSchema = z.object({
+  path: z.array(z.string()),
+  set: z.boolean(),
+}) satisfies z.ZodType<Wire<SettingsSecretView>>
+
+/** SettingsNamespaceView row of settings.describe and the write responses. */
+export const settingsNamespaceViewSchema = z.object({
+  ns: z.string().min(1),
+  schema: z.unknown(),
+  value: z.unknown(),
+  base: z.unknown().optional(),
+  user: z.unknown().optional(),
+  applies: z.union([z.literal('live'), z.literal('restart')]),
+  secrets: z.array(settingsSecretViewSchema),
+  revision: z.number(),
+}) satisfies z.ZodType<Wire<SettingsNamespaceView>>
+
+/** settings.describe request payload. */
+export const settingsDescribeRequestSchema = z.object({}) satisfies z.ZodType<Wire<RequestPayload<'settings.describe'>>>
+
+/** settings.describe response value. */
+export const settingsDescribeValueSchema = z.object({
+  writable: z.boolean(),
+  namespaces: z.array(settingsNamespaceViewSchema),
+}) satisfies z.ZodType<Wire<ResponseValue<'settings.describe'>>>
+
+/** settings.update request payload. */
+export const settingsUpdateRequestSchema = z.object({
+  ns: z.string().min(1),
+  patch: z.record(z.string(), z.unknown()),
+  expectedRevision: z.number().optional(),
+}) satisfies z.ZodType<Wire<RequestPayload<'settings.update'>>>
+
+/** settings.update response value: the namespace's new redacted view. */
+export const settingsUpdateValueSchema = settingsNamespaceViewSchema satisfies z.ZodType<Wire<ResponseValue<'settings.update'>>>
+
+/** settings.replace request payload. */
+export const settingsReplaceRequestSchema = z.object({
+  ns: z.string().min(1),
+  section: z.record(z.string(), z.unknown()),
+  expectedRevision: z.number().optional(),
+}) satisfies z.ZodType<Wire<RequestPayload<'settings.replace'>>>
+
+/** One path-addressed edit of settings.mutate. */
+export const settingsPathOpSchema = z.discriminatedUnion('op', [
+  z.object({ op: z.literal('set'), path: z.array(z.string()), value: z.unknown() }),
+  z.object({ op: z.literal('unset'), path: z.array(z.string()) }),
+]) as unknown as z.ZodType<Wire<SettingsPathOpView>>
+
+/** settings.mutate request payload. */
+export const settingsMutateRequestSchema = z.object({
+  ns: z.string().min(1),
+  ops: z.array(settingsPathOpSchema),
+  expectedRevision: z.number().optional(),
+}) satisfies z.ZodType<Wire<RequestPayload<'settings.mutate'>>>
+
+/** settings.mutate response value: the namespace's new redacted view. */
+export const settingsMutateValueSchema = settingsNamespaceViewSchema satisfies z.ZodType<Wire<ResponseValue<'settings.mutate'>>>
+
+/** settings.replace response value. */
+export const settingsReplaceValueSchema = settingsNamespaceViewSchema satisfies z.ZodType<Wire<ResponseValue<'settings.replace'>>>
diff --git a/packages/host/apiproxy/src/api/settings.ts b/packages/host/apiproxy/src/api/settings.ts
new file mode 100644
index 0000000000..30327f19d1
--- /dev/null
+++ b/packages/host/apiproxy/src/api/settings.ts
@@ -0,0 +1,90 @@
+/**
+ * settings domain contract: the web face of the user-settings seam
+ * (`ctx.settings`). Every payload that leaves this domain is redacted by the
+ * seam (`describe({ redactSecrets: true })` semantics): `role('secret')`
+ * fields never ride a response in any layer, and the `secrets` slot list is
+ * how a form learns a write-only field exists and whether it is configured.
+ */
+
+import type { RpcRequest, RpcResponse } from './rpc.ts'
+
+/** One schema-declared secret slot inside a redacted namespace value. */
+export interface SettingsSecretView {
+  /** Path from the section root to the removed field. */
+  path: string[]
+  /** Whether the slot currently holds a value (the value itself never rides). */
+  set: boolean
+}
+
+/** Wire view of one registered settings namespace. */
+export interface SettingsNamespaceView {
+  /** Namespace key (`llm-deepseek`, `llm-pi-ai`, …). */
+  ns: string
+  /** Serialized schemastery schema envelope (`schema.toJSON()`); rehydrate with `new Schema(json)`. */
+  schema: unknown
+  /** Redacted resolved value (schema defaults → composition base → user layer). */
+  value: unknown
+  /** Redacted composition base layer, when the registrant declared one. */
+  base?: unknown
+  /** Redacted raw user section, when one exists; a field's presence here marks it user-overridden. */
+  user?: unknown
+  /** When the owner applies changes. */
+  applies: 'live' | 'restart'
+  /** Every schema-declared secret slot with its configured state. */
+  secrets: SettingsSecretView[]
+  /**
+   * Monotonic revision of the raw user section this view was read at. Send it
+   * back as `expectedRevision` on a write so a stale editor is refused rather
+   * than silently overwriting a concurrent change.
+   */
+  revision: number
+}
+
+/**
+ * One path-addressed edit carried by `settings.mutate`. `set` writes the
+ * value at the path (creating intermediate objects); `unset` removes it. The
+ * empty path addresses the section root.
+ */
+export type SettingsPathOpView =
+  | { op: 'set'; path: string[]; value: unknown }
+  | { op: 'unset'; path: string[] }
+
+/** Settings-domain unary methods (the map keys settings.* of RpcMethodMap). */
+export interface SettingsApi {
+  /**
+   * Describe every registered namespace: redacted layered values plus the
+   * serialized schema a client renders its form from. `writable: false`
+   * (read-only provider) tells the client to disable every write control.
+   */
+  describe(request: RpcRequest<{}>): Promise<RpcResponse<{ writable: boolean; namespaces: SettingsNamespaceView[] }>>
+
+  /**
+   * Merge a patch into one namespace's user layer (validate → persist →
+   * commit). Secret-role fields may be INCLUDED in the patch (write-only
+   * direction); a form that leaves a secret untouched simply omits it and the
+   * merge preserves the stored value. Responds with the namespace's new
+   * redacted view; a schema or storage rejection is `settings-rejected`.
+   */
+  update(request: RpcRequest<{ ns: string; patch: object; expectedRevision?: number }>): Promise<RpcResponse<SettingsNamespaceView>>
+
+  /**
+   * Replace one namespace's user section wholesale — the removal/reset path a
+   * merge cannot express (`section: {}` resets to composition defaults). Keys
+   * absent from `section` are dropped, secrets included: a client must first
+   * fold the descriptor's `user` layer (and re-supply any secret it wants to
+   * keep) or accept the reset.
+   */
+  replace(request: RpcRequest<{ ns: string; section: object; expectedRevision?: number }>): Promise<RpcResponse<SettingsNamespaceView>>
+
+  /**
+   * Apply path-addressed edits to one namespace's user section, resolved
+   * against the section as stored — NOT against whatever the caller last
+   * read. This is the removal path for any client holding the redacted
+   * descriptor: it names the field it means, so a secret the wire never
+   * returned cannot be deleted as a side effect. `replace` remains the
+   * deliberate wholesale reset.
+   */
+  mutate(
+    request: RpcRequest<{ ns: string; ops: SettingsPathOpView[]; expectedRevision?: number }>,
+  ): Promise<RpcResponse<SettingsNamespaceView>>
+}
diff --git a/packages/host/apiproxy/src/fetch/client.ts b/packages/host/apiproxy/src/fetch/client.ts
index b1dc1e4a1e..252c36561a 100644
--- a/packages/host/apiproxy/src/fetch/client.ts
+++ b/packages/host/apiproxy/src/fetch/client.ts
@@ -46,6 +46,13 @@ import {
   goalCompleteValueSchema,
   goalClearValueSchema,
 } from '../api/goals.schema.ts'
+import {
+  settingsDescribeValueSchema, settingsMutateValueSchema, settingsReplaceValueSchema, settingsUpdateValueSchema,
+} from '../api/settings.schema.ts'
+import {
+  credentialsDescribeValueSchema, credentialsSetValueSchema, credentialsUnsetValueSchema,
+} from '../api/credentials.schema.ts'
+import { llmModelsValueSchema, llmProvidersValueSchema } from '../api/llm.schema.ts'
 
 /**
  * Client consumption face of the contract (shape a): same domain tree as ApiProxy, but unary
@@ -108,6 +115,21 @@ export interface IApiClient {
     complete(payload: RequestPayload<'goal.complete'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'goal.complete'>>>
     clear(payload: RequestPayload<'goal.clear'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'goal.clear'>>>
   }
+  settings: {
+    describe(payload: RequestPayload<'settings.describe'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'settings.describe'>>>
+    update(payload: RequestPayload<'settings.update'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'settings.update'>>>
+    replace(payload: RequestPayload<'settings.replace'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'settings.replace'>>>
+    mutate(payload: RequestPayload<'settings.mutate'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'settings.mutate'>>>
+  }
+  credentials: {
+    describe(payload: RequestPayload<'credentials.describe'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'credentials.describe'>>>
+    set(payload: RequestPayload<'credentials.set'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'credentials.set'>>>
+    unset(payload: RequestPayload<'credentials.unset'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'credentials.unset'>>>
+  }
+  llm: {
+    providers(payload: RequestPayload<'llm.providers'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'llm.providers'>>>
+    models(payload: RequestPayload<'llm.models'>, signal?: AbortSignal): Promise<RpcResponse<ResponseValue<'llm.models'>>>
+  }
   /** client-response passthrough (rpcId is a backfill of the server-request's id — never minted here). */
   respond(message: ClientResponse, signal?: AbortSignal): Promise<RpcReceipt>
 }
@@ -146,6 +168,15 @@ const UNARY_VALUE_SCHEMAS: { [K in keyof RpcMethodMap]: z.ZodType<Wire<ResponseV
   'goal.resume': goalResumeValueSchema,
   'goal.complete': goalCompleteValueSchema,
   'goal.clear': goalClearValueSchema,
+  'settings.describe': settingsDescribeValueSchema,
+  'settings.update': settingsUpdateValueSchema,
+  'settings.replace': settingsReplaceValueSchema,
+  'settings.mutate': settingsMutateValueSchema,
+  'credentials.describe': credentialsDescribeValueSchema,
+  'credentials.set': credentialsSetValueSchema,
+  'credentials.unset': credentialsUnsetValueSchema,
+  'llm.providers': llmProvidersValueSchema,
+  'llm.models': llmModelsValueSchema,
 }
 
 /** Default unary timeout (rpc-compare 2026-07-19: a hung host must not leave callers pending forever). */
@@ -379,6 +410,24 @@ export abstract class AbstractApiClient implements IApiClient {
     clear: (payload, signal) => this.callUnary('goal.clear', payload, signal),
   }
 
+  readonly settings: IApiClient['settings'] = {
+    describe: (payload, signal) => this.callUnary('settings.describe', payload, signal),
+    update: (payload, signal) => this.callUnary('settings.update', payload, signal),
+    replace: (payload, signal) => this.callUnary('settings.replace', payload, signal),
+    mutate: (payload, signal) => this.callUnary('settings.mutate', payload, signal),
+  }
+
+  readonly credentials: IApiClient['credentials'] = {
+    describe: (payload, signal) => this.callUnary('credentials.describe', payload, signal),
+    set: (payload, signal) => this.callUnary('credentials.set', payload, signal),
+    unset: (payload, signal) => this.callUnary('credentials.unset', payload, signal),
+  }
+
+  readonly llm: IApiClient['llm'] = {
+    providers: (payload, signal) => this.callUnary('llm.providers', payload, signal),
+    models: (payload, signal) => this.callUnary('llm.models', payload, signal),
+  }
+
   readonly events: IApiClient['events'] = {
     mux: (payload, signal, onOpen) => this.openMux(payload, signal, onOpen),
     host: (payload, signal, onOpen) => this.openHost(payload, signal, onOpen),
diff --git a/packages/host/apiproxy/src/fetch/handler.ts b/packages/host/apiproxy/src/fetch/handler.ts
index 785ce7431b..d1cb98deb8 100644
--- a/packages/host/apiproxy/src/fetch/handler.ts
+++ b/packages/host/apiproxy/src/fetch/handler.ts
@@ -48,6 +48,13 @@ import {
   goalCompleteRequestSchema,
   goalClearRequestSchema,
 } from '../api/goals.schema.ts'
+import {
+  settingsDescribeRequestSchema, settingsMutateRequestSchema, settingsReplaceRequestSchema, settingsUpdateRequestSchema,
+} from '../api/settings.schema.ts'
+import {
+  credentialsDescribeRequestSchema, credentialsSetRequestSchema, credentialsUnsetRequestSchema,
+} from '../api/credentials.schema.ts'
+import { llmModelsRequestSchema, llmProvidersRequestSchema } from '../api/llm.schema.ts'
 
 /**
  * Unary dispatch table, keyed by (and compiler-locked to) RpcMethodMap: a map row without a
@@ -95,6 +102,15 @@ const UNARY_ROUTES: UnaryRoutes = {
   'goal.resume': { schema: goalResumeRequestSchema, invoke: (api, r) => api.goals.resume(r) },
   'goal.complete': { schema: goalCompleteRequestSchema, invoke: (api, r) => api.goals.complete(r) },
   'goal.clear': { schema: goalClearRequestSchema, invoke: (api, r) => api.goals.clear(r) },
+  'settings.describe': { schema: settingsDescribeRequestSchema, invoke: (api, r) => api.settings.describe(r) },
+  'settings.update': { schema: settingsUpdateRequestSchema, invoke: (api, r) => api.settings.update(r) },
+  'settings.replace': { schema: settingsReplaceRequestSchema, invoke: (api, r) => api.settings.replace(r) },
+  'settings.mutate': { schema: settingsMutateRequestSchema, invoke: (api, r) => api.settings.mutate(r) },
+  'credentials.describe': { schema: credentialsDescribeRequestSchema, invoke: (api, r) => api.credentials.describe(r) },
+  'credentials.set': { schema: credentialsSetRequestSchema, invoke: (api, r) => api.credentials.set(r) },
+  'credentials.unset': { schema: credentialsUnsetRequestSchema, invoke: (api, r) => api.credentials.unset(r) },
+  'llm.providers': { schema: llmProvidersRequestSchema, invoke: (api, r) => api.llm.providers(r) },
+  'llm.models': { schema: llmModelsRequestSchema, invoke: (api, r) => api.llm.models(r) },
 }
 
 /** Route lookup that narrows an arbitrary path segment to a map key (single cast point for the string→key refinement). */
diff --git a/packages/host/apiproxy/src/index.ts b/packages/host/apiproxy/src/index.ts
index e801278565..339b1e777d 100644
--- a/packages/host/apiproxy/src/index.ts
+++ b/packages/host/apiproxy/src/index.ts
@@ -59,6 +59,9 @@ export class ApiProxyService extends Service implements ApiProxy {
   readonly commands: ApiProxy['commands']
   readonly goals: ApiProxy['goals']
   readonly skills: ApiProxy['skills']
+  readonly settings: ApiProxy['settings']
+  readonly credentials: ApiProxy['credentials']
+  readonly llm: ApiProxy['llm']
   readonly events: ApiProxy['events']
   readonly respond: ApiProxy['respond']
 
@@ -77,6 +80,9 @@ export class ApiProxyService extends Service implements ApiProxy {
     this.commands = api.commands
     this.goals = api.goals
     this.skills = api.skills
+    this.settings = api.settings
+    this.credentials = api.credentials
+    this.llm = api.llm
     this.events = api.events
     // createApiProxy returns closures (no `this` capture); bind only satisfies
     // the unbound-method lint without changing behavior.
diff --git a/packages/host/apiproxy/tests/api-proxy-config.spec.ts b/packages/host/apiproxy/tests/api-proxy-config.spec.ts
new file mode 100644
index 0000000000..a505f72018
--- /dev/null
+++ b/packages/host/apiproxy/tests/api-proxy-config.spec.ts
@@ -0,0 +1,441 @@
+/**
+ * Settings/credentials/llm RPC domains and their host-stream frames over
+ * createApiProxy: layered redacted describe, write-path rejection mapping,
+ * value-free credential views, the directory/live-route merge, and the three
+ * invalidation frames (settings/credentials/models changed).
+ */
+
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import z from 'schemastery'
+import AgentRegistry from '@deepseek-ai/dsh-agent'
+import SessionStore from '@deepseek-ai/dsh-session'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRegistry from '@deepseek-ai/dsh-tools'
+import UserInteractionService from '@deepseek-ai/dsh-user-interaction'
+import LlmService, { LlmAdapter } from '@deepseek-ai/dsh-llm'
+import type { GenerateOptions, LlmModelInfo, LlmProviderInfo, StreamChunk } from '@deepseek-ai/dsh-llm'
+import { Settings, settingsNamespace } from '@deepseek-ai/dsh-settings'
+import type { SettingsNamespace } from '@deepseek-ai/dsh-settings'
+import { Credentials } from '@deepseek-ai/dsh-credentials'
+import type { CredentialInfo, CredentialRef, ResolvedCredential } from '@deepseek-ai/dsh-credentials'
+import type { HostFrame } from '../src/api/index.ts'
+import type { RpcRequest, RpcResponse } from '../src/api/rpc.ts'
+import { RpcId } from '../src/api/rpc.ts'
+import { createApiProxy } from '../src/api-proxy.ts'
+
+const DEFAULTS = { provider: 'p', model: 'm', cwd: '/tmp', workspaceRoot: '/tmp' }
+
+let nextRpc = 1
+function request<P>(payload: P): RpcRequest<P> {
+  return { rpcId: RpcId(`req-${String(nextRpc++)}`), payload }
+}
+
+function expectOk<T>(response: RpcResponse<T>): T {
+  expect(response.result.ok).toBe(true)
+  if (!response.result.ok) throw new Error('unreachable')
+  return response.result.value
+}
+
+function expectErr<T>(response: RpcResponse<T>): { code: string; message: string; details: unknown } {
+  expect(response.result.ok).toBe(false)
+  if (response.result.ok) throw new Error('unreachable')
+  return response.result.error
+}
+
+/** In-memory settings provider: the seam base class owns all tested behavior. */
+class MemorySettings extends Settings {
+  doc: Record<string, unknown>
+
+  constructor(ctx: ConstructorParameters<typeof Settings>[0], options?: { doc?: Record<string, unknown>; readOnly?: boolean }) {
+    super(ctx)
+    this.doc = structuredClone(options?.doc ?? {})
+    this.readOnly = options?.readOnly ?? false
+  }
+
+  private readonly readOnly: boolean
+
+  get writable(): boolean {
+    return !this.readOnly
+  }
+
+  protected load(): Promise<Record<string, unknown>> {
+    return Promise.resolve(structuredClone(this.doc))
+  }
+
+  protected persist(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
+    this.doc[ns] = structuredClone(section)
+    return Promise.resolve()
+  }
+}
+
+/** In-memory credential provider with an env-shadow double for the rejection path. */
+class MemoryCredentials extends Credentials {
+  private readonly values = new Map<string, string>()
+
+  constructor(ctx: ConstructorParameters<typeof Credentials>[0], options?: { shadowed?: string[] }) {
+    super(ctx)
+    this.shadowed = new Set(options?.shadowed ?? [])
+  }
+
+  private readonly shadowed: Set<string>
+
+  resolve(ref: CredentialRef): Promise<ResolvedCredential | undefined> {
+    if (this.shadowed.has(ref)) return Promise.resolve({ value: 'from-env', source: 'env' })
+    const value = this.values.get(ref)
+    return Promise.resolve(value === undefined ? undefined : { value, source: 'file' })
+  }
+
+  describe(ref: CredentialRef): Promise<CredentialInfo> {
+    if (this.shadowed.has(ref)) return Promise.resolve({ configured: true, source: 'env', writable: false })
+    const configured = this.values.has(ref)
+    return Promise.resolve({ configured, ...configured ? { source: 'file' } : {}, writable: true })
+  }
+
+  set(ref: CredentialRef, value: string): Promise<void> {
+    if (this.shadowed.has(ref)) {
+      return Promise.reject(new Error(`credentials: ${ref} is shadowed by the read-only environment`))
+    }
+    this.values.set(ref, value)
+    this.ctx.emit('credentials/updated', ref)
+    return Promise.resolve()
+  }
+
+  unset(ref: CredentialRef): Promise<void> {
+    if (this.shadowed.has(ref)) {
+      return Promise.reject(new Error(`credentials: ${ref} is shadowed by the read-only environment`))
+    }
+    this.values.delete(ref)
+    this.ctx.emit('credentials/updated', ref)
+    return Promise.resolve()
+  }
+}
+
+/** Catalog-serving adapter stub for the llm.models path. */
+class CatalogAdapter extends LlmAdapter {
+  constructor(private readonly name: string, private readonly models: readonly string[]) {
+    super()
+  }
+
+  override providerInfo(provider: string): LlmProviderInfo {
+    return { id: provider, name: this.name }
+  }
+
+  override listModels(provider: string): Promise<readonly LlmModelInfo[]> {
+    return Promise.resolve(this.models.map(id => ({ provider, id, name: id })))
+  }
+
+
+  async * stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
+    throw new Error('not exercised')
+  }
+}
+
+class BrokenCatalogAdapter extends CatalogAdapter {
+  override listModels(): Promise<readonly LlmModelInfo[]> {
+    return Promise.reject(new Error('catalog backend down'))
+  }
+}
+
+const NS = settingsNamespace('llm-deepseek')
+
+const AdapterConfig = z.object({
+  apiKey: z.string().role('secret'),
+  apiKeyEnv: z.string().default('DEEPSEEK_API_KEY'),
+  baseURL: z.string(),
+})
+
+async function harness(options?: {
+  settings?: false | { doc?: Record<string, unknown>; readOnly?: boolean }
+  credentials?: false | { shadowed?: string[] }
+  /** Skip the directory registration to exercise a namespace the proxy does not expose. */
+  configurableProviders?: false
+}): Promise<Context> {
+  const ctx = new Context()
+  await ctx.plugin(SessionStore)
+  await ctx.plugin(SystemPrompt, { persona: '' })
+  await ctx.plugin(ToolRegistry)
+  await ctx.plugin(UserInteractionService)
+  await ctx.plugin(AgentRegistry)
+  await ctx.plugin(LlmService)
+  if (options?.settings !== false) await ctx.plugin(MemorySettings, options?.settings)
+  if (options?.credentials !== false) await ctx.plugin(MemoryCredentials, options?.credentials)
+  // The proxy serves only namespaces a configurable provider addresses, which
+  // is what the real LLM plugins declare at load; the tests mirror that.
+  if (options?.configurableProviders !== false) {
+    ctx.llm.registerConfigurableProviders([
+      { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [] },
+    ])
+  }
+  // Host-stream opener reads the committed-workspace baseline; the stub
+  // suffices — the real workspace composition is api-proxy-workspace.spec's.
+  ctx.provide('workspace', { list: () => [] } as never)
+  return ctx
+}
+
+/** Drain `count` host frames matching `types`, then abort the stream. */
+async function collectHost(
+  api: ReturnType<typeof createApiProxy>,
+  types: string[],
+  count: number,
+  run: () => Promise<void>,
+): Promise<HostFrame[]> {
+  const abort = new AbortController()
+  const frames: HostFrame[] = []
+  const stream = api.events.host(request({}), abort.signal)
+  const consume = (async () => {
+    for await (const frame of stream) {
+      if (!types.includes(frame.payload.type)) continue
+      frames.push(frame.payload)
+      if (frames.length >= count) abort.abort()
+    }
+  })()
+  await run()
+  await consume
+  return frames
+}
+
+describe('settings domain', () => {
+  it('reports an actionable error when no settings provider is mounted', async () => {
+    const ctx = await harness({ settings: false })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const error = expectErr(await api.settings.describe(request({})))
+    expect(error.code).toBe('internal')
+    expect(error.message).toContain('dsh-settings-local')
+  })
+
+  it('describes layered redacted namespaces with their secret slots', async () => {
+    const ctx = await harness({ settings: { doc: { 'llm-deepseek': { apiKey: 'user-secret', baseURL: 'https://user' } } } })
+    ctx.settings.register(NS, AdapterConfig, { base: { baseURL: 'https://base' } })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const value = expectOk(await api.settings.describe(request({})))
+    expect(value.writable).toBe(true)
+    expect(value.namespaces).toHaveLength(1)
+    const view = value.namespaces[0]!
+    expect(view.ns).toBe('llm-deepseek')
+    expect(view.applies).toBe('live')
+    expect((view.schema as { refs?: unknown }).refs).toBeDefined()
+    expect(view.value).toEqual({ apiKeyEnv: 'DEEPSEEK_API_KEY', baseURL: 'https://user' })
+    expect(view.base).toEqual({ baseURL: 'https://base' })
+    expect(view.user).toEqual({ baseURL: 'https://user' })
+    expect(view.secrets).toEqual([{ path: ['apiKey'], set: true }])
+    expect(JSON.stringify(value)).not.toContain('user-secret')
+  })
+
+  it('serves only namespaces a registered model provider addresses', async () => {
+    // The settings seam is general: any plugin may register a namespace for
+    // its own configuration. The Web configuration plane is not — it is the
+    // model-provider surface, and a namespace nothing in the provider
+    // directory addresses must be invisible and unwritable here, so a future
+    // plugin cannot become remotely configurable just by registering.
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig)
+    ctx.settings.register(settingsNamespace('some-other-plugin'), z.object({ secretPath: z.string() }))
+    const api = createApiProxy(ctx, DEFAULTS)
+
+    const value = expectOk(await api.settings.describe(request({})))
+    expect(value.namespaces.map(view => view.ns)).toEqual(['llm-deepseek'])
+
+    for (const response of [
+      await api.settings.update(request({ ns: 'some-other-plugin', patch: { secretPath: '/etc/shadow' } })),
+      await api.settings.replace(request({ ns: 'some-other-plugin', section: {} })),
+    ]) {
+      const error = expectErr(response)
+      expect(error.code).toBe('settings-not-exposed')
+      expect(error.details).toEqual({ ns: 'some-other-plugin' })
+    }
+    // The write never reached the seam.
+    expect(ctx.settings.describe().find(d => String(d.ns) === 'some-other-plugin')?.value).toEqual({})
+  })
+
+  it('refuses even a model-provider namespace once its directory entry is gone', async () => {
+    const ctx = await harness({ configurableProviders: false })
+    ctx.settings.register(NS, AdapterConfig)
+    const api = createApiProxy(ctx, DEFAULTS)
+    expect(expectOk(await api.settings.describe(request({}))).namespaces).toEqual([])
+    expect(expectErr(await api.settings.update(request({ ns: 'llm-deepseek', patch: { baseURL: 'https://x' } }))).code)
+      .toBe('settings-not-exposed')
+  })
+
+  it('invalidates the model catalog when a provider namespace changes, and broadcasts a raw-only change', async () => {
+    // Editing `models` changes no route, so llm/adapters-updated never fires
+    // and an open model picker kept serving the old catalog. And storing an
+    // override equal to the resolved value emits nothing on settings/updated,
+    // so another tab never learned the field became overridden.
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig, { base: { baseURL: 'https://base' } })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const frames = await collectHost(api, ['host/settings-changed', 'host/models-changed'], 2, async () => {
+      await api.settings.update(request({ ns: 'llm-deepseek', patch: { baseURL: 'https://base' } }))
+    })
+    expect(frames).toEqual([
+      { type: 'host/settings-changed', ns: 'llm-deepseek' },
+      { type: 'host/models-changed' },
+    ])
+    // The resolved value never moved: base already said https://base.
+    expect(expectOk(await api.settings.describe(request({}))).namespaces[0]!.value)
+      .toEqual({ apiKeyEnv: 'DEEPSEEK_API_KEY', baseURL: 'https://base' })
+  })
+
+  it('maps a stale expectedRevision to settings-conflict carrying both revisions', async () => {
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig)
+    const api = createApiProxy(ctx, DEFAULTS)
+    const opened = expectOk(await api.settings.describe(request({}))).namespaces[0]!.revision
+    expect(expectOk(await api.settings.update(request({ ns: 'llm-deepseek', patch: { baseURL: 'https://first' }, expectedRevision: opened })))
+      .revision).toBe(opened + 1)
+    const error = expectErr(await api.settings.update(request({ ns: 'llm-deepseek', patch: { baseURL: 'https://second' }, expectedRevision: opened })))
+    expect(error.code).toBe('settings-conflict')
+    expect(error.details).toEqual({ ns: 'llm-deepseek', expected: opened, actual: opened + 1 })
+    // The refused write changed nothing.
+    expect(expectOk(await api.settings.describe(request({}))).namespaces[0]!.user).toEqual({ baseURL: 'https://first' })
+  })
+
+  it('updates the user layer, answers with the new redacted view, and broadcasts the frame', async () => {
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig, { base: { baseURL: 'https://base' } })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const frames = await collectHost(api, ['host/settings-changed'], 1, async () => {
+      const view = expectOk(await api.settings.update(request({ ns: 'llm-deepseek', patch: { apiKey: 'sk-new', baseURL: 'https://next' } })))
+      expect(view.value).toEqual({ apiKeyEnv: 'DEEPSEEK_API_KEY', baseURL: 'https://next' })
+      expect(view.user).toEqual({ baseURL: 'https://next' })
+      expect(view.secrets).toEqual([{ path: ['apiKey'], set: true }])
+      expect(JSON.stringify(view)).not.toContain('sk-new')
+    })
+    expect(frames).toEqual([{ type: 'host/settings-changed', ns: 'llm-deepseek' }])
+  })
+
+  it('replace resets the user layer wholesale', async () => {
+    const ctx = await harness({ settings: { doc: { 'llm-deepseek': { baseURL: 'https://user' } } } })
+    ctx.settings.register(NS, AdapterConfig)
+    const api = createApiProxy(ctx, DEFAULTS)
+    const view = expectOk(await api.settings.replace(request({ ns: 'llm-deepseek', section: {} })))
+    expect(view.value).toEqual({ apiKeyEnv: 'DEEPSEEK_API_KEY' })
+    expect(view.user).toEqual({})
+  })
+
+  it.each([
+    ['an invalid namespace name', 'Not A Namespace', {}],
+    ['a schema-invalid patch', 'llm-deepseek', { baseURL: 42 }],
+  ])('rejects %s as settings-rejected', async (_case, ns, patch) => {
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig)
+    const api = createApiProxy(ctx, DEFAULTS)
+    const error = expectErr(await api.settings.update(request({ ns, patch })))
+    expect(error.code).toBe('settings-rejected')
+    expect(error.details).toEqual({ ns })
+  })
+
+  it('answers an unregistered namespace exactly like an unexposed one', async () => {
+    // Deliberately indistinguishable: separating "does not exist" from
+    // "exists but is not yours to configure" would let a caller enumerate the
+    // registered namespaces one probe at a time.
+    const ctx = await harness()
+    ctx.settings.register(NS, AdapterConfig)
+    ctx.settings.register(settingsNamespace('some-other-plugin'), z.object({ secretPath: z.string() }))
+    const api = createApiProxy(ctx, DEFAULTS)
+    const unknown = expectErr(await api.settings.update(request({ ns: 'unknown-ns', patch: {} })))
+    const unexposed = expectErr(await api.settings.update(request({ ns: 'some-other-plugin', patch: {} })))
+    expect(unknown.code).toBe('settings-not-exposed')
+    expect(unexposed.code).toBe(unknown.code)
+    expect(unexposed.message.replace('some-other-plugin', 'unknown-ns')).toBe(unknown.message)
+  })
+
+  it('maps a read-only provider refusal onto the same rejection', async () => {
+    const ctx = await harness({ settings: { readOnly: true } })
+    ctx.settings.register(NS, AdapterConfig)
+    const api = createApiProxy(ctx, DEFAULTS)
+    const value = expectOk(await api.settings.describe(request({})))
+    expect(value.writable).toBe(false)
+    const error = expectErr(await api.settings.update(request({ ns: 'llm-deepseek', patch: {} })))
+    expect(error.code).toBe('settings-rejected')
+    expect(error.message).toContain('read-only')
+  })
+})
+
+describe('credentials domain', () => {
+  it('reports an actionable error when no credential provider is mounted', async () => {
+    const ctx = await harness({ credentials: false })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const error = expectErr(await api.credentials.describe(request({ refs: ['A'] })))
+    expect(error.code).toBe('internal')
+    expect(error.message).toContain('dsh-credentials-local')
+  })
+
+  it('describes value-free views and flips state through set/unset with frames', async () => {
+    const ctx = await harness()
+    const api = createApiProxy(ctx, DEFAULTS)
+    const before = expectOk(await api.credentials.describe(request({ refs: ['OPENAI_API_KEY'] })))
+    expect(before.credentials).toEqual({ OPENAI_API_KEY: { configured: false, writable: true } })
+    const frames = await collectHost(api, ['host/credentials-changed'], 2, async () => {
+      expectOk(await api.credentials.set(request({ ref: 'OPENAI_API_KEY', value: 'sk-secret' })))
+      const after = expectOk(await api.credentials.describe(request({ refs: ['OPENAI_API_KEY'] })))
+      expect(after.credentials).toEqual({ OPENAI_API_KEY: { configured: true, source: 'file', writable: true } })
+      expect(JSON.stringify(after)).not.toContain('sk-secret')
+      expectOk(await api.credentials.unset(request({ ref: 'OPENAI_API_KEY' })))
+    })
+    expect(frames).toEqual([
+      { type: 'host/credentials-changed', ref: 'OPENAI_API_KEY' },
+      { type: 'host/credentials-changed', ref: 'OPENAI_API_KEY' },
+    ])
+  })
+
+  it('maps a shadowed write onto credential-rejected for set and unset alike', async () => {
+    const ctx = await harness({ credentials: { shadowed: ['DEEPSEEK_API_KEY'] } })
+    const api = createApiProxy(ctx, DEFAULTS)
+    const described = expectOk(await api.credentials.describe(request({ refs: ['DEEPSEEK_API_KEY'] })))
+    expect(described.credentials['DEEPSEEK_API_KEY']).toEqual({ configured: true, source: 'env', writable: false })
+    const setError = expectErr(await api.credentials.set(request({ ref: 'DEEPSEEK_API_KEY', value: 'x' })))
+    expect(setError.code).toBe('credential-rejected')
+    expect(setError.details).toEqual({ ref: 'DEEPSEEK_API_KEY' })
+    const unsetError = expectErr(await api.credentials.unset(request({ ref: 'DEEPSEEK_API_KEY' })))
+    expect(unsetError.code).toBe('credential-rejected')
+  })
+})
+
+describe('llm domain', () => {
+  it('merges the configurable directory with live routes and appends undeclared ones', async () => {
+    const ctx = await harness({ configurableProviders: false })
+    ctx.llm.registerConfigurableProviders([
+      { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [] },
+      { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'] },
+    ])
+    ctx.llm.registerAdapter(['deepseek-official'], new CatalogAdapter('DeepSeek', ['deepseek-v4-flash']))
+    ctx.llm.registerAdapter(['undeclared'], new CatalogAdapter('Undeclared', ['u-1']))
+    const api = createApiProxy(ctx, DEFAULTS)
+    const value = expectOk(await api.llm.providers(request({})))
+    expect(value.providers).toEqual([
+      { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [], active: true },
+      { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: false },
+      { provider: 'undeclared', displayName: 'Undeclared', settingsNs: '', settingsPath: [], active: true },
+    ])
+  })
+
+  it('serves the host-scoped catalog with per-provider failures contained', async () => {
+    const ctx = await harness()
+    ctx.llm.registerAdapter(['deepseek-official'], new CatalogAdapter('DeepSeek', ['deepseek-v4-flash', 'deepseek-v4-pro']))
+    ctx.llm.registerAdapter(['broken'], new BrokenCatalogAdapter('Broken', []))
+    const api = createApiProxy(ctx, DEFAULTS)
+    const value = expectOk(await api.llm.models(request({})))
+    expect(value.groups).toEqual([{
+      id: 'deepseek-official',
+      name: 'DeepSeek',
+      models: [
+        { id: 'deepseek-v4-flash', name: 'deepseek-v4-flash' },
+        { id: 'deepseek-v4-pro', name: 'deepseek-v4-pro' },
+      ],
+    }])
+    expect(value.failures).toEqual([{ id: 'broken', name: 'Broken', message: 'catalog backend down' }])
+  })
+
+  it('broadcasts host/models-changed at every topology commit point', async () => {
+    const ctx = await harness()
+    const api = createApiProxy(ctx, DEFAULTS)
+    const frames = await collectHost(api, ['host/models-changed'], 2, async () => {
+      const dispose = ctx.llm.registerAdapter(['deepseek-official'], new CatalogAdapter('DeepSeek', []))
+      dispose()
+      return Promise.resolve()
+    })
+    expect(frames).toEqual([{ type: 'host/models-changed' }, { type: 'host/models-changed' }])
+  })
+})
diff --git a/packages/host/apiproxy/tests/api-proxy-models.spec.ts b/packages/host/apiproxy/tests/api-proxy-models.spec.ts
index af8791431a..5197d96436 100644
--- a/packages/host/apiproxy/tests/api-proxy-models.spec.ts
+++ b/packages/host/apiproxy/tests/api-proxy-models.spec.ts
@@ -85,9 +85,9 @@ async function harness(logged?: {
   await ctx.plugin(LlmService)
   await ctx.plugin(UserInteractionService)
   await ctx.plugin(AgentRegistry)
-  ctx.llm.registerAdapter(['deepseek'], new CatalogAdapter('DeepSeek', [
-    { provider: 'deepseek', id: 'deepseek-chat', name: 'DeepSeek Chat' },
-    { provider: 'deepseek', id: 'deepseek-reasoner', name: 'DeepSeek Reasoner', description: 'Reasoning model' },
+  ctx.llm.registerAdapter(['deepseek-official'], new CatalogAdapter('DeepSeek', [
+    { provider: 'deepseek-official', id: 'deepseek-chat', name: 'DeepSeek Chat' },
+    { provider: 'deepseek-official', id: 'deepseek-reasoner', name: 'DeepSeek Reasoner', description: 'Reasoning model' },
   ], REASONING))
   ctx.llm.registerAdapter(['broken'], new CatalogAdapter('Broken Provider', new Error('catalog offline')))
   ctx.llm.registerAdapter(['metadata-broken'], new CatalogAdapter('Metadata Broken', [
@@ -120,20 +120,20 @@ function expectValue<T>(response: { result: { ok: true; value: T } | { ok: false
 describe('Web session model selection', () => {
   it('groups successful providers, isolates failures, and preserves an unlisted current model', async () => {
     const { ctx, sessionId } = await harness({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: ReasoningEffortId('max'),
     })
-    const api = createApiProxy(ctx, { provider: 'deepseek', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
+    const api = createApiProxy(ctx, { provider: 'deepseek-official', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
 
     const catalog = expectValue(await api.sessions.models(request({ sessionId })))
     expect(catalog.current).toEqual({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: 'max',
     })
     expect(catalog.groups).toEqual([{
-      id: 'deepseek',
+      id: 'deepseek-official',
       name: 'DeepSeek',
       models: [
         { id: 'deepseek-chat', name: 'DeepSeek Chat', reasoning: REASONING },
@@ -165,43 +165,43 @@ describe('Web session model selection', () => {
 
   it('accepts an advisory-unlisted model, rejects an unavailable provider, and switches only after the next assembly', async () => {
     const { ctx, agent, sessionId } = await harness()
-    const api = createApiProxy(ctx, { provider: 'deepseek', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
+    const api = createApiProxy(ctx, { provider: 'deepseek-official', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
     const seed: LlmCallConfig = { provider: 'seed', model: 'seed', temperature: 0.2 }
     const signal = new AbortController().signal
 
     expect(expectValue(await api.sessions.models(request({ sessionId }))).current)
-      .toEqual({ provider: 'deepseek', model: 'deepseek-chat' })
+      .toEqual({ provider: 'deepseek-official', model: 'deepseek-chat' })
     expect((await ctx.systemPrompt.assemble()).variables)
-      .toMatchObject({ provider: 'deepseek', model: 'deepseek-chat' })
+      .toMatchObject({ provider: 'deepseek-official', model: 'deepseek-chat' })
 
     const selected = expectValue(await api.sessions.selectModel(request({
       sessionId,
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: 'max',
     })))
     expect(selected.selected).toEqual({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: 'max',
     })
     await expect(agentEvents(ctx, agent).waterfall(
       'agent/request', 1, 0, signal, () => Promise.resolve(seed),
-    )).resolves.toMatchObject({ provider: 'deepseek', model: 'deepseek-chat' })
+    )).resolves.toMatchObject({ provider: 'deepseek-official', model: 'deepseek-chat' })
 
     expect((await ctx.systemPrompt.assemble()).variables)
-      .toMatchObject({ provider: 'deepseek', model: 'private-preview' })
+      .toMatchObject({ provider: 'deepseek-official', model: 'private-preview' })
     await expect(agentEvents(ctx, agent).waterfall(
       'agent/request', 1, 1, signal, () => Promise.resolve(seed),
     )).resolves.toMatchObject({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: 'max',
     })
 
     const unsupported = await api.sessions.selectModel(request({
       sessionId,
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'private-preview',
       reasoningEffort: 'medium',
     }))
@@ -209,7 +209,7 @@ describe('Web session model selection', () => {
       ok: false,
       error: {
         code: 'model-unavailable',
-        message: 'provider "deepseek" model "private-preview" does not support reasoning effort "medium"',
+        message: 'provider "deepseek-official" model "private-preview" does not support reasoning effort "medium"',
       },
     })
 
@@ -227,7 +227,7 @@ describe('Web session model selection', () => {
       },
     })
     expect(expectValue(await api.sessions.models(request({ sessionId }))).current)
-      .toEqual({ provider: 'deepseek', model: 'private-preview', reasoningEffort: 'max' })
+      .toEqual({ provider: 'deepseek-official', model: 'private-preview', reasoningEffort: 'max' })
     await ctx.fiber.dispose()
   })
 })
diff --git a/packages/host/apiproxy/tests/client-handler.spec.ts b/packages/host/apiproxy/tests/client-handler.spec.ts
index b7ace8f832..2b8eee27e8 100644
--- a/packages/host/apiproxy/tests/client-handler.spec.ts
+++ b/packages/host/apiproxy/tests/client-handler.spec.ts
@@ -24,6 +24,9 @@ function scriptedApi(overrides: {
   skills?: Partial<ApiProxy['skills']>
   events?: Partial<ApiProxy['events']>
   goals?: Partial<ApiProxy['goals']>
+  settings?: Partial<ApiProxy['settings']>
+  credentials?: Partial<ApiProxy['credentials']>
+  llm?: Partial<ApiProxy['llm']>
   respond?: ApiProxy['respond']
 } = {}): ApiProxy {
   async function *empty<F>(): AsyncGenerator<RpcRequest<F>> { /* no frames */ }
@@ -36,10 +39,10 @@ function scriptedApi(overrides: {
       history: r => ok(r, {
         events: [],
         hasMore: false,
-        modelTarget: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+        modelTarget: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
       }),
       models: r => ok(r, {
-        current: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+        current: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
         groups: [],
         failures: [],
       }),
@@ -83,6 +86,24 @@ function scriptedApi(overrides: {
       clear: err,
       ...overrides.goals,
     },
+    settings: {
+      describe: r => ok(r, { writable: true, namespaces: [] }),
+      update: err,
+      replace: err,
+      mutate: err,
+      ...overrides.settings,
+    },
+    credentials: {
+      describe: r => ok(r, { credentials: {} }),
+      set: err,
+      unset: err,
+      ...overrides.credentials,
+    },
+    llm: {
+      providers: r => ok(r, { providers: [] }),
+      models: r => ok(r, { groups: [], failures: [] }),
+      ...overrides.llm,
+    },
     events: { mux: () => empty<MuxFrame>(), host: () => empty<HostFrame>(), ...overrides.events },
     respond: overrides.respond ?? (() => Promise.resolve({ accepted: false as const, reason: 'not-pending' as const })),
   }
@@ -92,6 +113,15 @@ function client(api: ApiProxy, timeoutMs?: number): InProcessApiClient {
   return new InProcessApiClient(toFetchHandler(api), timeoutMs)
 }
 
+/** Wrap one scripted method to record its invocation into `seen` before responding. */
+function recorderInto(seen: { method: string; payload: unknown }[]) {
+  return <P, V>(method: string, respond: (r: RpcRequest<P>) => Promise<RpcResponse<V>>) =>
+    (r: RpcRequest<P>): Promise<RpcResponse<V>> => {
+      seen.push({ method, payload: r.payload })
+      return respond(r)
+    }
+}
+
 describe('unary round trip', () => {
   it('carries payload out and value back through the full wire form', async () => {
     let seen: RpcRequest<{ cursor?: string }> | undefined
@@ -462,11 +492,7 @@ describe('goals unary surface', () => {
 
   it('round-trips every goal method with its own payload and value shape', async () => {
     const seen: { method: string; payload: unknown }[] = []
-    const record = <P, V>(method: string, respond: (r: RpcRequest<P>) => Promise<RpcResponse<V>>) =>
-      (r: RpcRequest<P>): Promise<RpcResponse<V>> => {
-        seen.push({ method, payload: r.payload })
-        return respond(r)
-      }
+    const record = recorderInto(seen)
     const api = scriptedApi({
       goals: {
         create: record('goal.create', r => ok(r, ack)),
@@ -580,3 +606,84 @@ describe('envelope tap', () => {
     expect(batches).toEqual([])
   })
 })
+
+describe('config unary surface', () => {
+  it('round-trips every settings/credentials/llm method with its own payload and value shape', async () => {
+    const seen: { method: string; payload: unknown }[] = []
+    const record = recorderInto(seen)
+    const view = {
+      ns: 'llm-deepseek',
+      schema: { uid: 1, refs: { 1: { type: 'object' } } },
+      value: { baseURL: 'https://next' },
+      user: { baseURL: 'https://next' },
+      applies: 'live' as const,
+      secrets: [{ path: ['apiKey'], set: true }],
+      revision: 0,
+    }
+    const providerRow = {
+      provider: 'openai',
+      displayName: 'openai',
+      settingsNs: 'llm-pi-ai',
+      settingsPath: ['providers', 'openai'],
+      active: false,
+    }
+    const group = { id: 'deepseek-official', name: 'DeepSeek', models: [{ id: 'deepseek-v4-flash', name: 'Flash' }] }
+    const api = scriptedApi({
+      settings: {
+        describe: record('settings.describe', r => ok(r, { writable: true, namespaces: [view] })),
+        update: record('settings.update', r => ok(r, view)),
+        replace: record('settings.replace', r => ok(r, view)),
+        mutate: record('settings.mutate', r => ok(r, view)),
+      },
+      credentials: {
+        describe: record('credentials.describe', r => ok(r, { credentials: { OPENAI_API_KEY: { configured: true, source: 'file', writable: true } } })),
+        set: record('credentials.set', r => ok(r, {})),
+        unset: record('credentials.unset', r => ok(r, {})),
+      },
+      llm: {
+        providers: record('llm.providers', r => ok(r, { providers: [providerRow] })),
+        models: record('llm.models', r => ok(r, { groups: [group], failures: [] })),
+      },
+    })
+    const c = client(api)
+
+    const described = await c.settings.describe({})
+    expect(described.result).toEqual({ ok: true, value: { writable: true, namespaces: [view] } })
+    const updated = await c.settings.update({ ns: 'llm-deepseek', patch: { baseURL: 'https://next' } })
+    expect(updated.result).toEqual({ ok: true, value: view })
+    const replaced = await c.settings.replace({ ns: 'llm-deepseek', section: {} })
+    expect(replaced.result).toEqual({ ok: true, value: view })
+    const mutated = await c.settings.mutate({
+      ns: 'llm-deepseek',
+      ops: [{ op: 'unset', path: ['baseURL'] }],
+      expectedRevision: 0,
+    })
+    expect(mutated.result).toEqual({ ok: true, value: view })
+    const creds = await c.credentials.describe({ refs: ['OPENAI_API_KEY'] })
+    expect(creds.result).toEqual({ ok: true, value: { credentials: { OPENAI_API_KEY: { configured: true, source: 'file', writable: true } } } })
+    expect((await c.credentials.set({ ref: 'OPENAI_API_KEY', value: 'sk-x' })).result).toEqual({ ok: true, value: {} })
+    expect((await c.credentials.unset({ ref: 'OPENAI_API_KEY' })).result).toEqual({ ok: true, value: {} })
+    const providers = await c.llm.providers({})
+    expect(providers.result).toEqual({ ok: true, value: { providers: [providerRow] } })
+    const models = await c.llm.models({})
+    expect(models.result).toEqual({ ok: true, value: { groups: [group], failures: [] } })
+
+    expect(seen.map(call => call.method)).toEqual([
+      'settings.describe', 'settings.update', 'settings.replace', 'settings.mutate',
+      'credentials.describe', 'credentials.set', 'credentials.unset',
+      'llm.providers', 'llm.models',
+    ])
+    expect(seen[1]?.payload).toEqual({ ns: 'llm-deepseek', patch: { baseURL: 'https://next' } })
+    expect(seen[3]?.payload)
+      .toEqual({ ns: 'llm-deepseek', ops: [{ op: 'unset', path: ['baseURL'] }], expectedRevision: 0 })
+    expect(seen[5]?.payload).toEqual({ ref: 'OPENAI_API_KEY', value: 'sk-x' })
+  })
+
+  it('rejects an invalid credential reference name at the carrier boundary', async () => {
+    const api = scriptedApi()
+    const response = await client(api).credentials.set({ ref: 'not a var', value: 'x' })
+    expect(response.result.ok).toBe(false)
+    if (response.result.ok) throw new Error('unreachable')
+    expect(response.result.error.code).toBe('bad-request')
+  })
+})
diff --git a/packages/host/apiproxy/tests/fetch-carrier.spec.ts b/packages/host/apiproxy/tests/fetch-carrier.spec.ts
index bc76b7242f..c701f3f912 100644
--- a/packages/host/apiproxy/tests/fetch-carrier.spec.ts
+++ b/packages/host/apiproxy/tests/fetch-carrier.spec.ts
@@ -43,7 +43,7 @@ function fakeApi(overrides: Partial<{ muxFrames: MuxFrame[]; hostFrames: HostFra
           result: {
             ok: true,
             value: {
-              current: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+              current: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
               groups: [],
               failures: [],
             },
@@ -170,6 +170,39 @@ function fakeApi(overrides: Partial<{ muxFrames: MuxFrame[]; hostFrames: HostFra
         return { rpcId: request.rpcId, result: { ok: false, error: { code: 'internal', message: 'stub', details: {} } } }
       },
     },
+    settings: {
+      async describe(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: { writable: true, namespaces: [] } } }
+      },
+      async update(request) {
+        return { rpcId: request.rpcId, result: { ok: false, error: { code: 'settings-rejected', message: 'stub', details: { ns: request.payload.ns } } } }
+      },
+      async replace(request) {
+        return { rpcId: request.rpcId, result: { ok: false, error: { code: 'settings-rejected', message: 'stub', details: { ns: request.payload.ns } } } }
+      },
+      async mutate(request) {
+        return { rpcId: request.rpcId, result: { ok: false, error: { code: 'settings-rejected', message: 'stub', details: { ns: request.payload.ns } } } }
+      },
+    },
+    credentials: {
+      async describe(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: { credentials: {} } } }
+      },
+      async set(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: {} } }
+      },
+      async unset(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: {} } }
+      },
+    },
+    llm: {
+      async providers(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: { providers: [] } } }
+      },
+      async models(request) {
+        return { rpcId: request.rpcId, result: { ok: true, value: { groups: [], failures: [] } } }
+      },
+    },
     events: {
       mux: (_request, signal) => stream(muxFrames, signal),
       host: (_request, signal) => stream(hostFrames, signal),
@@ -219,7 +252,7 @@ describe('unary round trip (handler ⇄ client, no network)', () => {
     expect((await c.sessions.models({ sessionId: 's' as never })).result.ok).toBe(true)
     const selected = await c.sessions.selectModel({
       sessionId: 's' as never,
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-flash',
       reasoningEffort: 'max',
     })
@@ -227,7 +260,7 @@ describe('unary round trip (handler ⇄ client, no network)', () => {
       ok: true,
       value: {
         selected: {
-          provider: 'deepseek',
+          provider: 'deepseek-official',
           model: 'deepseek-v4-flash',
           reasoningEffort: 'max',
         },
diff --git a/packages/host/apiproxy/tests/rpc-schemas.spec.ts b/packages/host/apiproxy/tests/rpc-schemas.spec.ts
index 0b4d0b78ee..1bbf46e1ba 100644
--- a/packages/host/apiproxy/tests/rpc-schemas.spec.ts
+++ b/packages/host/apiproxy/tests/rpc-schemas.spec.ts
@@ -160,13 +160,13 @@ describe('sessions domain schemas', () => {
     expect(sessionHistoryValueSchema.parse({
       events: [],
       hasMore: false,
-      modelTarget: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      modelTarget: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     }).hasMore).toBe(false)
     expect(sessionModelsRequestSchema.parse({ sessionId: 's1' }).sessionId).toBe('s1')
     expect(sessionModelsValueSchema.parse({
-      current: { provider: 'deepseek', model: 'deepseek-v4-flash', reasoningEffort: 'max' },
+      current: { provider: 'deepseek-official', model: 'deepseek-v4-flash', reasoningEffort: 'max' },
       groups: [{
-        id: 'deepseek',
+        id: 'deepseek-official',
         name: 'DeepSeek',
         models: [{
           id: 'deepseek-v4-flash',
@@ -186,12 +186,12 @@ describe('sessions domain schemas', () => {
     }).groups[0]?.models[0]?.id).toBe('deepseek-v4-flash')
     expect(sessionSelectModelRequestSchema.parse({
       sessionId: 's1',
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-pro',
       reasoningEffort: 'max',
     }).reasoningEffort).toBe('max')
     expect(sessionSelectModelValueSchema.parse({
-      selected: { provider: 'deepseek', model: 'deepseek-v4-pro', reasoningEffort: 'max' },
+      selected: { provider: 'deepseek-official', model: 'deepseek-v4-pro', reasoningEffort: 'max' },
     }).selected.reasoningEffort).toBe('max')
     expect(() => sessionSelectModelRequestSchema.parse({
       sessionId: 's1',
@@ -200,14 +200,14 @@ describe('sessions domain schemas', () => {
     })).toThrow()
     expect(() => sessionSelectModelRequestSchema.parse({
       sessionId: 's1',
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'm',
       reasoningEffort: '',
     })).toThrow()
     expect(() => sessionModelsValueSchema.parse({
-      current: { provider: 'deepseek', model: 'm' },
+      current: { provider: 'deepseek-official', model: 'm' },
       groups: [{
-        id: 'deepseek',
+        id: 'deepseek-official',
         name: 'DeepSeek',
         models: [{ id: 'm', name: 'M', reasoning: { efforts: [] } }],
       }],
diff --git a/packages/host/apiproxy/tsconfig.json b/packages/host/apiproxy/tsconfig.json
index 5185081283..4b6e9e94d0 100644
--- a/packages/host/apiproxy/tsconfig.json
+++ b/packages/host/apiproxy/tsconfig.json
@@ -11,6 +11,12 @@
     {
       "path": "../../goal/goal"
     },
+    {
+      "path": "../../settings/settings"
+    },
+    {
+      "path": "../../credentials/credentials"
+    },
     {
       "path": "../../../vendor/cordis"
     },
diff --git a/packages/llm/llm-deepseek/README.i18n.yaml b/packages/llm/llm-deepseek/README.i18n.yaml
index 594600e8c3..45d9cee054 100644
--- a/packages/llm/llm-deepseek/README.i18n.yaml
+++ b/packages/llm/llm-deepseek/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/llm/llm-deepseek/README.md
-README.md: 7a2314ea2ca0fb6606310a4961fcbc658240a7b8
-README.zh.md: d73145f8b8a32d8a515b6b4c0e916f0a11cd4771
+README.md: 020aa65073495526be3f32912b7cd06667c52a2e
+README.zh.md: 4c655e90ba00340c056f6ac16159621f7a8c1ddb
diff --git a/packages/llm/llm-deepseek/README.md b/packages/llm/llm-deepseek/README.md
index 7a2314ea2c..020aa65073 100644
--- a/packages/llm/llm-deepseek/README.md
+++ b/packages/llm/llm-deepseek/README.md
@@ -4,7 +4,7 @@ English | [中文](README.zh.md)
 
 DeepSeek chat-completions adapter for the harness LLM seam: direct `fetch` + SSE (framed by `eventsource-parser`) translating the official wire format (source of truth: the API docs — guides/thinking_mode, guides/tool_calls, api/create-chat-completion) into the `StreamChunk` protocol.
 
-A second, library-backed implementation of the same seam exists in `@deepseek-ai/dsh-llm-pi-ai`. This package always owns the `deepseek` provider route; mounting a pi-ai profile with `provider: deepseek` in the same context throws `LlmError('DUPLICATE_ADAPTER')` by design.
+A second, library-backed implementation of the same seam exists in `@deepseek-ai/dsh-llm-pi-ai`. This package owns the `deepseek-official` provider route — deliberately distinct from pi-ai's catalog name `deepseek`, so one composition can mount both DeepSeek paths side by side; registering another adapter for `deepseek-official` itself still throws `LlmError('DUPLICATE_ADAPTER')`.
 
 The package root exposes the Cordis plugin contract and `DeepSeekAdapter`; wire serialization, SSE parsing, and chunk translation helpers are not part of that root contract.
 
@@ -14,10 +14,12 @@ The package root exposes the Cordis plugin contract and `DeepSeekAdapter`; wire
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY    # or rely on the env fallback
-    baseURL: !!js process.env.DEEPSEEK_BASE_URL  # default: https://api.deepseek.com
+    apiKeyEnv: DEEPSEEK_API_KEY  # default; resolved per request via ctx.credentials, then the environment
+    # apiKey: …                  # literal escape hatch; prefer the reference so no secret enters this file
+    baseURL: https://api.deepseek.com # optional; $DEEPSEEK_BASE_URL then the public API when omitted
     thinking: enabled        # optional; provider default is enabled
     reasoningEffort: high    # optional; off | high | max — omitted ⇒ high
+    maxTokens: 256000        # optional positive per-request output cap; this is the default
     streamIdleTimeoutMs: 300000 # optional; positive finite Node timer delay; five-minute default
     retryPolicy:             # optional; omission uses bounded normal defaults
       mode: always           # normal | always
@@ -25,18 +27,20 @@ The package root exposes the Cordis plugin contract and `DeepSeekAdapter`; wire
         initialDelayMs: 500
         maxDelayMs: 10000
         jitterRatio: 0.1
-    defaultContextWindow: 256000 # optional positive-integer fallback for models without an exact value
+    defaultContextWindow: 1000000 # optional positive-integer fallback; this is the default
     models:                  # optional; defaults to V4 Flash and V4 Pro
       - id: deepseek-v4-flash
         name: DeepSeek-V4-Flash
       - id: private-reasoner
         description: Company-hosted reasoning model
-        contextWindow: 64000
+        contextWindow: 512000
 ```
 
-The plugin registers the single provider route `deepseek` together with its resolved `retryPolicy`. A request selects it with `provider: deepseek`; its `model` is passed through as the wire `model` string, so changing DeepSeek models does not require lifecycle-time registration. Omitting `models` advertises `deepseek-v4-flash` as `DeepSeek-V4-Flash` and `deepseek-v4-pro` as `DeepSeek-V4-Pro`, each with a 256,000-token context window; an explicit list replaces those defaults, while `models: []` advertises none. Catalog entries are exposed through `ctx.llm.listModels('deepseek')` for clients such as ACP editors and the Web selector, but remain advisory: unlisted model ids still pass through unchanged. An omitted entry name defaults to its id.
+The plugin registers the single provider route `deepseek-official` together with its resolved `retryPolicy`. A request selects it with `provider: deepseek-official`; its `model` is passed through as the wire `model` string, so changing DeepSeek models does not require lifecycle-time registration. Omitting `models` advertises `deepseek-v4-flash` as `DeepSeek-V4-Flash` and `deepseek-v4-pro` as `DeepSeek-V4-Pro`, each with a 1,000,000-token context window; an explicit list replaces those defaults, while `models: []` advertises none. Catalog entries are exposed through `ctx.llm.listModels('deepseek-official')` for clients such as ACP editors and the Web selector, but remain advisory: unlisted model ids still pass through unchanged. An omitted entry name defaults to its id.
 
-`contextWindow` is optional per configured model and is not exposed through the advisory catalog. `ctx.llm.resolveModelInfo('deepseek', model).context` returns an exact model value first, then `defaultContextWindow` for an entry without capacity or an unlisted pass-through id. When neither value exists, `context` is absent without invalidating routing. Pressure-sensitive plugins therefore get deployment-owned capacity without treating the model selector as authoritative. Registering another adapter for `deepseek` throws `LlmError('DUPLICATE_ADAPTER')`.
+`contextWindow` is optional per configured model and is not exposed through the advisory catalog. `ctx.llm.resolveModelInfo('deepseek-official', model).context` returns an exact model value first, then `defaultContextWindow` for an entry without capacity or an unlisted pass-through id. The adapter default is 1,000,000; pressure-sensitive plugins therefore get deployment-owned capacity without treating the model selector as authoritative. Registering another adapter for `deepseek-official` throws `LlmError('DUPLICATE_ADAPTER')`.
+
+`maxTokens` is the adapter-configured output cap for conversation requests and defaults to 256,000. Exact-model resolution exposes it as `defaultMaxTokens`; `LlmService` materializes that value into `GenerateOptions.maxTokens` before the agent loop writes `request/header`, so the wire request remains reconstructable. An explicit request or `AgentOptions.maxTokens` value wins and is serialized as `max_tokens`. The adapter does not clamp this request budget against `contextWindow`; deployments with a smaller context or provider output limit must configure a compatible `maxTokens`.
 
 The same exact-model result exposes ordered `off`, `high`, and `max` efforts under `reasoning` for every pass-through model when deployment policy permits thinking. `reasoningEffort` selects the deployment default and falls back to `high` when omitted. `agent/request` can replace it on each conversation step; the resolved value is logged in `request/header`. `high` and `max` enable thinking and serialize as the official top-level `reasoning_effort`; adapter-owned `off` instead serializes `thinking.type: disabled` and omits `reasoning_effort`. An unsupported value fails with `UNSUPPORTED_REASONING_EFFORT` before network I/O.
 
@@ -44,6 +48,17 @@ The same exact-model result exposes ordered `off`, `high`, and `max` efforts und
 
 `streamIdleTimeoutMs` bounds each outstanding provider read, including the initial `fetch`, without counting time the consumer spends between chunks. One stable abort signal reaches the request and body reader for the whole call; expiry stops the transport and throws `LlmError('TIMEOUT')`, while an earlier caller abort throws `LlmError('ABORTED')`. The adapter makes exactly one provider request per `stream()` call; it registers the configured policy as provider metadata, and `dsh-llm-retry` separately executes it at durable agent-step boundaries.
 
+## Dynamic configuration (settings + credentials)
+
+Connection facts are not frozen at load. `resolveAdapterOptions` is the one explicit resolve step from raw config to validated facts, and the adapter re-reads them through a thunk **once per operation**: base URL, catalog, request defaults, and idle budget all take effect on the next request, while an in-flight stream keeps the facts it started with. Two optional seams feed that thunk:
+
+- **`ctx.settings`** — the plugin registers the `llm-deepseek` namespace with this same `Config` schema and its `cordis.yml` entry as the composition `base`, so a `llm-deepseek:` section in the user settings document overrides any field without a restart. Without a mounted settings service the entry config alone drives the adapter, unchanged. A live settings snapshot that passes the schema but fails a beyond-schema bound (a duplicate catalog id, a broken thinking/effort pair) keeps the last good facts and logs the failure; the entry config itself still fails plugin load.
+- **`ctx.credentials`** — the API key resolves per stream call, from the *same* resolved snapshot that supplies the endpoint: a non-empty literal `apiKey` wins, then `apiKeyEnv` through the credential seam (`$DSH_HOME/.env` under the live environment), then — only without a mounted seam — the raw environment variable. Because credential facts travel with the connection facts, a settings snapshot the resolver rejects contributes neither its endpoint nor its key: the whole previous generation keeps serving. A request with no key anywhere fails with `MISSING_CREDENTIAL` naming every configuration entry point, while the route stays registered and the catalog stays browsable — first-run onboarding is "browse models, store the key, prompt again", with no restart between.
+
+The one registration-captured fact is the retry policy: when its resolved value changes, the plugin re-registers the route in place (same adapter instance, one synchronous section), so `ctx.llm.providerRetryPolicy('deepseek-official')` always reports the current policy.
+
+The plugin also declares its route in the configurable-provider directory (`ctx.llm.listConfigurableProviders()`): provider `deepseek-official`, settings namespace `llm-deepseek`, empty settings path — the whole section is the profile. Configuration surfaces use that entry to offer this adapter alongside dormant pi-ai providers.
+
 ## App attribution
 
 Every request carries the shared attribution header from dsh-llm's `attributionHeaders()` - the mandatory `User-Agent` baseline identifying the harness (see [dsh-llm § App attribution](../llm/README.md#app-attribution-attributionts)). Direct DeepSeek requests and OpenAI-compatible gateway requests get no provider-specific app-attribution headers under this adapter contract; OpenRouter app attribution is deferred to a future explicit OpenRouter adapter or mode. A request whose `GenerateOptions.purpose` is `compaction` (dsh-compact-basic's auxiliary summarization call) additionally carries `x-deepseek-harness-compact: 1`, so the host can separate compaction traffic from conversation requests.
@@ -62,7 +77,7 @@ Non-2xx responses throw `LlmError` with stable codes: `AUTH` (401/403), `QUOTA`
 
 ## Testing
 
-Unit suites run against a local `node:http` mock SSE server (no network), including dynamic `high`/`off`/`max` selection, structured HTTP facts, malformed/truncated streams, caller abort, connection failure, and proof that idle timeout aborts the actual body. Real-API coverage lives in `tests/adapter.e2e.ts` (`pnpm run test:e2e`, key-gated): V4 Flash + V4 Pro across thinking enabled/disabled and both official effort levels, including the thinking+tools round trip with reasoning passback.
+Unit suites run against a local `node:http` mock SSE server (no network), including dynamic `high`/`off`/`max` selection, structured HTTP facts, malformed/truncated streams, caller abort, connection failure, and proof that idle timeout aborts the actual body. `tests/dynamic-config.spec.ts` drives real settings-local and credentials-local providers (next-request base-URL/key pickup, literal precedence, keyless onboarding, last-good snapshots, retry-policy re-registration), and `tests/loader-composition.spec.ts` boots the full chain from a test-only `cordis.yml` through the actual Loader and edits `settings.yaml`/`.env` on disk. Real-API coverage lives in `tests/adapter.e2e.ts` (`pnpm run test:e2e`, key-gated): V4 Flash + V4 Pro across thinking enabled/disabled and both official effort levels, including the thinking+tools round trip with reasoning passback and a request whose key exists only in a credentials-local document.
 
 ## Model Experience
 
@@ -96,6 +111,8 @@ Loop-retained response blocks append to the next request and preserve its earlie
 
 ## Known Limitations and Deferred Work
 
+- **A settings `models` list replaces the composition list wholesale** — settings-layer merging is per-field, and arrays are one field; per-entry catalog merging would need a keyed shape.
+- **`Config.apiKey` is redacted on the wire but still a stored literal** — `describe({ redactSecrets: true })` strips it and reports the slot, so a configuration UI never receives the value; the key is nonetheless stored in the settings document rather than the credential store, so prefer `apiKeyEnv`.
 - **`tool_choice` is not mapped** — not part of the core vocabulary (MVP cut, shared with the pi-ai twin).
 - **Requests use raw `fetch`, not `@cordisjs/plugin-http`** — no shared proxy/interception configuration; adoption is deferred until a second adapter wants it (`TODO(http)`).
 - **Serialization flattens user and tool-result content to text blocks** — plugin-added block types are skipped, and empty tool output crosses the wire as the literal `(no output)`.
diff --git a/packages/llm/llm-deepseek/README.zh.md b/packages/llm/llm-deepseek/README.zh.md
index d73145f8b8..4c655e90ba 100644
--- a/packages/llm/llm-deepseek/README.zh.md
+++ b/packages/llm/llm-deepseek/README.zh.md
@@ -4,7 +4,7 @@
 
 harness LLM（大语言模型）seam 的 DeepSeek chat-completions 适配器：直接 `fetch` + SSE（Server-Sent Events，由 `eventsource-parser` 分帧），将官方协议格式（wire format；真源：API 文档 guides/thinking_mode、guides/tool_calls、api/create-chat-completion）转换为 `StreamChunk` 协议。
 
-同一 seam 的第二个基于库的实现位于 `@deepseek-ai/dsh-llm-pi-ai`。本包（package）始终负责 `deepseek` 提供方路由；在同一上下文中装载 `provider: deepseek` 的 pi-ai profile 会按设计抛出 `LlmError('DUPLICATE_ADAPTER')`。
+同一 seam 的第二个基于库的实现位于 `@deepseek-ai/dsh-llm-pi-ai`。本包（package）拥有 `deepseek-official` 提供方路由——刻意区别于 pi-ai 的 catalog 名称 `deepseek`，因此同一组合可以并排挂载两条 DeepSeek 路径；而为 `deepseek-official` 本身注册另一个适配器仍会抛出 `LlmError('DUPLICATE_ADAPTER')`。
 
 包根入口导出 Cordis 插件契约与 `DeepSeekAdapter`；协议序列化、SSE 解析与分片转换 helper 不属于该根契约。
 
@@ -14,10 +14,12 @@ harness LLM（大语言模型）seam 的 DeepSeek chat-completions 适配器：
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY    # or rely on the env fallback
-    baseURL: !!js process.env.DEEPSEEK_BASE_URL  # default: https://api.deepseek.com
+    apiKeyEnv: DEEPSEEK_API_KEY  # default; resolved per request via ctx.credentials, then the environment
+    # apiKey: …                  # literal escape hatch; prefer the reference so no secret enters this file
+    baseURL: https://api.deepseek.com # optional; $DEEPSEEK_BASE_URL then the public API when omitted
     thinking: enabled        # optional; provider default is enabled
     reasoningEffort: high    # optional; off | high | max — omitted ⇒ high
+    maxTokens: 256000        # optional positive per-request output cap; this is the default
     streamIdleTimeoutMs: 300000 # optional; positive finite Node timer delay; five-minute default
     retryPolicy:             # optional; omission uses bounded normal defaults
       mode: always           # normal | always
@@ -25,18 +27,20 @@ harness LLM（大语言模型）seam 的 DeepSeek chat-completions 适配器：
         initialDelayMs: 500
         maxDelayMs: 10000
         jitterRatio: 0.1
-    defaultContextWindow: 256000 # optional positive-integer fallback for models without an exact value
+    defaultContextWindow: 1000000 # optional positive-integer fallback; this is the default
     models:                  # optional; defaults to V4 Flash and V4 Pro
       - id: deepseek-v4-flash
         name: DeepSeek-V4-Flash
       - id: private-reasoner
         description: Company-hosted reasoning model
-        contextWindow: 64000
+        contextWindow: 512000
 ```
 
-该插件注册唯一提供方路由 `deepseek`，同时注册解析后的 `retryPolicy`。请求使用 `provider: deepseek` 选择该路由；其 `model` 会作为协议 `model` 字符串原样传递，因此更改 DeepSeek 模型不需要生命周期时注册。省略 `models` 会公布 `deepseek-v4-flash`（名称为 `DeepSeek-V4-Flash`）和 `deepseek-v4-pro`（名称为 `DeepSeek-V4-Pro`），两者的上下文窗口均为 256,000 token；显式列表会替换这些默认值，`models: []` 则不公布任何模型。Catalog 配置项通过 `ctx.llm.listModels('deepseek')` 公开给 ACP（Agent Client Protocol）编辑器和 Web 选择器等客户端，但仍只提供建议：未列出模型 id 仍原样传递。省略配置项 name 默认为其 id。
+该插件注册唯一提供方路由 `deepseek-official`，同时注册解析后的 `retryPolicy`。请求使用 `provider: deepseek-official` 选择该路由；其 `model` 会作为协议 `model` 字符串原样传递，因此更改 DeepSeek 模型不需要生命周期时注册。省略 `models` 会公布 `deepseek-v4-flash`（名称为 `DeepSeek-V4-Flash`）和 `deepseek-v4-pro`（名称为 `DeepSeek-V4-Pro`），两者的上下文窗口均为 1,000,000 token；显式列表会替换这些默认值，`models: []` 则不公布任何模型。Catalog 配置项通过 `ctx.llm.listModels('deepseek-official')` 公开给 ACP（Agent Client Protocol）编辑器和 Web 选择器等客户端，但仍只提供建议：未列出模型 id 仍原样传递。省略配置项 name 默认为其 id。
 
-`contextWindow` 对每个已配置模型都可选，不会通过建议 catalog 公开。`ctx.llm.resolveModelInfo('deepseek', model).context` 先返回精确模型值，再对不含容量的配置项或未列出原样传递 id 返回 `defaultContextWindow`。两者都不存在时，`context` 字段缺失但不会使路由失效。因此，压力敏感插件可以获得由部署决定的容量，不会将模型 selector 视为权威。为 `deepseek` 注册另一个适配器会抛出 `LlmError('DUPLICATE_ADAPTER')`。
+`contextWindow` 对每个已配置模型都可选，不会通过建议 catalog 公开。`ctx.llm.resolveModelInfo('deepseek-official', model).context` 先返回精确模型值，再对不含容量的配置项或未列出原样传递 id 返回 `defaultContextWindow`。适配器默认值为 1,000,000；因此，压力敏感插件可以获得由部署决定的容量，不会将模型 selector 视为权威。为 `deepseek-official` 注册另一个适配器会抛出 `LlmError('DUPLICATE_ADAPTER')`。
+
+`maxTokens` 是适配器为对话请求配置的输出上限，默认值为 256,000。确切模型解析会将其公开为 `defaultMaxTokens`；`LlmService` 会在 agent loop（智能体循环）写入 `request/header` 前，将该值填入 `GenerateOptions.maxTokens`，从而仍可根据持久记录重建协议请求。显式的请求值或 `AgentOptions.maxTokens` 值优先，并会序列化为 `max_tokens`。适配器不会根据 `contextWindow` 自动调低该请求预算；上下文或提供方输出上限较小的部署必须配置与其相容的 `maxTokens`。
 
 同一确切模型结果会在部署策略允许思考时，为每个原样传递模型在 `reasoning` 下公开有序的 `off`、`high` 和 `max` 推理（reasoning）强度。`reasoningEffort` 选择部署默认值，省略时回退为 `high`。`agent/request` 可以在每个会话步骤替换它；解析后的值会记录在 `request/header`。`high` 和 `max` 会启用思考，并序列化为官方顶层 `reasoning_effort`；适配器持有的 `off` 则序列化为 `thinking.type: disabled`，且省略 `reasoning_effort`。不支持的值会在网络 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败。
 
@@ -44,6 +48,17 @@ harness LLM（大语言模型）seam 的 DeepSeek chat-completions 适配器：
 
 `streamIdleTimeoutMs` 会限制每次未完成提供方读取，包括初始 `fetch`，但不计入消费方在分片间花费的时间。同一个稳定的 abort 信号会在整个调用期间传递给请求与 body reader；过期会停止传输并抛出 `LlmError('TIMEOUT')`，较早的调用方 abort 则抛出 `LlmError('ABORTED')`。适配器每次 `stream()` 调用恰好发起一次提供方请求；它把已配置策略注册为提供方元数据，再由 `dsh-llm-retry` 在持久化的 agent（智能体）步骤边界单独执行该策略。
 
+## 动态配置（settings + credentials）
+
+连接事实不在加载时冻结。`resolveAdapterOptions` 是从原始配置到已校验事实的唯一显式 resolve 步骤，适配器经由一个 thunk **每操作重读一次**：base URL、catalog、请求默认值与 idle 预算都在下一次请求生效，进行中的流则保持其起始事实。两个可选 seam 供给该 thunk：
+
+- **`ctx.settings`**——插件用同一份 `Config` schema 注册 `llm-deepseek` namespace，并以其 `cordis.yml` 条目为组合 `base`，因此用户设置文档中的 `llm-deepseek:` 分节可以免重启覆盖任何字段。未挂载 settings 服务时，仅由 entry 配置驱动适配器，行为不变。存活 settings 快照若通过 schema 却违反 schema 之外的约束（重复的 catalog id、无法成立的 thinking／推理强度组合），则保留最后可用事实并记录失败；entry 配置本身仍会使插件加载失败。
+- **`ctx.credentials`**——API 密钥按每次 stream 调用解析，取自与端点*同一*份解析后的快照：非空的字面 `apiKey` 优先，其次经凭据 seam 解析 `apiKeyEnv`（活跃环境之下的 `$DSH_HOME/.env`），最后——仅在未挂载 seam 时——读取原始环境变量。由于凭据事实与连接事实同行，被 resolver 拒绝的 settings 快照既不贡献自己的端点，也不贡献自己的密钥：整个先前世代继续服务。任何地方都没有密钥的请求以 `MISSING_CREDENTIAL` 失败，并点名每个配置入口，同时路由保持注册、catalog 保持可浏览——首次运行的上手流程就是「浏览模型、存入密钥、再次发起提示」，中间无需任何重启。
+
+唯一在注册期捕获的事实是重试策略：其解析值变化时，插件原地重新注册该路由（同一适配器实例、一个同步区段），因此 `ctx.llm.providerRetryPolicy('deepseek-official')` 始终报告当前策略。
+
+该插件还会在可配置提供方目录（`ctx.llm.listConfigurableProviders()`）中声明自己的路由：提供方为 `deepseek-official`，settings namespace 为 `llm-deepseek`，settings path 为空——整个分节就是 profile。配置界面借助该条目，把本适配器与休眠的 pi-ai 提供方一并呈现。
+
 ## 应用归因
 
 每个请求都携带 dsh-llm `attributionHeaders()` 的共享归因标头，即用于识别 harness 的必需 `User-Agent` 基线（见 [dsh-llm § 应用归因](../llm/README.md#app-attribution-attributionts)）。在该适配器契约（adapter contract）下，直接 DeepSeek 请求与 OpenAI 兼容 gateway 请求都不会获得提供方特定应用归因标头；OpenRouter 应用归因暂缓到未来的显式 OpenRouter 适配器或模式。`GenerateOptions.purpose` 为 `compaction` 的请求（dsh-compact-basic 的辅助摘要调用）还会携带 `x-deepseek-harness-compact: 1`，让宿主可以将压缩流量与会话请求分开。
@@ -62,7 +77,7 @@ harness LLM（大语言模型）seam 的 DeepSeek chat-completions 适配器：
 
 ## 测试
 
-单元套件使用本地 `node:http` mock SSE 服务器（无网络），覆盖动态 `high`／`off`／`max` 选择、结构化 HTTP 事实、格式错误／截断流、调用方 abort、连接失败，以及 idle 超时确实会 abort 实际 body 的证明。真实 API 覆盖位于 `tests/adapter.e2e.ts`（`pnpm run test:e2e`，需有 key 才会运行）：V4 Flash + V4 Pro，覆盖思考启用／禁用与两种官方 effort 级别，包括思考 + 工具往返与推理回传。
+单元套件使用本地 `node:http` mock SSE 服务器（无网络），覆盖动态 `high`／`off`／`max` 选择、结构化 HTTP 事实、格式错误／截断流、调用方 abort、连接失败，以及 idle 超时确实会 abort 实际 body 的证明。`tests/dynamic-config.spec.ts` 驱动真实的 settings-local 与 credentials-local provider（下一请求即生效的 base-URL／密钥拾取、字面值优先、无密钥上手、最后可用快照、重试策略重注册），`tests/loader-composition.spec.ts` 则从仅测试用的 `cordis.yml` 出发，经真实 Loader 拉起完整链路，并在磁盘上编辑 `settings.yaml`/`.env`。真实 API 覆盖位于 `tests/adapter.e2e.ts`（`pnpm run test:e2e`，需有 key 才会运行）：V4 Flash + V4 Pro，覆盖思考启用／禁用与两种官方 effort 级别，包括思考 + 工具往返与推理回传，以及密钥仅存在于 credentials-local 文档中的请求。
 
 ## 模型体验
 
@@ -96,6 +111,8 @@ loop 保留的响应块会追加到下一个请求，并保留其较早可复用
 
 ## 已知限制与暂缓事项
 
+- **settings 的 `models` 列表会整体替换组合列表**：settings 层按字段合并，而数组是单个字段；按条目合并 catalog 需要带键的形状。
+- **`Config.apiKey` 在协议上已脱敏，但仍是一个已存的字面值**：`describe({ redactSecrets: true })` 会把它剥离并报告该槽位，配置 UI 因此永远收不到该值；但这个密钥仍存放在 settings 文档而非凭据存储中，所以请优先使用 `apiKeyEnv`。
 - **未映射 `tool_choice`**：它不属于核心词汇（MVP 取舍，与 pi-ai twin 共享）。
 - **请求使用原始 `fetch`，而非 `@cordisjs/plugin-http`**：没有共享 proxy／拦截配置；采用暂缓到第二个适配器需要该功能时（`TODO(http)`）。
 - **序列化会将 user 与工具结果内容展平为文本块**：会跳过插件添加的块类型，空工具输出会以字面 `(no output)` 通过协议发送。
diff --git a/packages/llm/llm-deepseek/package.json b/packages/llm/llm-deepseek/package.json
index d233ef7764..2c39e2d920 100644
--- a/packages/llm/llm-deepseek/package.json
+++ b/packages/llm/llm-deepseek/package.json
@@ -27,8 +27,10 @@
   ],
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-credentials": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-llm": "^0.0.1",
+    "@deepseek-ai/dsh-settings": "^0.0.1",
     "@deepseek-ai/dsh-timeout": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
@@ -37,8 +39,10 @@
     "schemastery": "^3.18.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-credentials": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^",
     "@deepseek-ai/dsh-timeout": "workspace:^",
     "cordis": "^4.0.0-rc.7"
   }
diff --git a/packages/llm/llm-deepseek/src/adapter.ts b/packages/llm/llm-deepseek/src/adapter.ts
index ff5ce9bf72..85985c41d8 100644
--- a/packages/llm/llm-deepseek/src/adapter.ts
+++ b/packages/llm/llm-deepseek/src/adapter.ts
@@ -1,21 +1,24 @@
 /**
  * `DeepSeekAdapter`: fetch + SSE against a DeepSeek (OpenAI-compatible)
- * chat-completions endpoint, emitting harness StreamChunks.
+ * chat-completions endpoint, emitting harness StreamChunks. The adapter is
+ * transport-only: connection facts arrive through a thunk resolved once per
+ * operation and the bearer token through a per-request resolver, so the
+ * registering plugin owns validation, layering, and credential policy.
  *
  * @module dsh-llm-deepseek/adapter
  */
 
-import { attributionHeaders, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, isQuotaExceededError, LlmAdapter, LlmError, ProviderRequestId, QUOTA_EXCEEDED_CODE, ReasoningEffortId, resolveRetryPolicy } from '@deepseek-ai/dsh-llm'
+import { attributionHeaders, CONTEXT_WINDOW_EXCEEDED_CODE, isContextWindowExceededError, isQuotaExceededError, LlmAdapter, LlmError, ProviderRequestId, QUOTA_EXCEEDED_CODE, ReasoningEffortId } from '@deepseek-ai/dsh-llm'
 import type {
   GenerateOptions,
   LlmModelInfo,
   LlmProviderInfo,
   LlmResolvedModelInfo,
   ResolvedRetryPolicy,
-  RetryPolicyConfig,
   StreamChunk,
 } from '@deepseek-ai/dsh-llm'
-import { idleWatchdog, MAX_TIMER_DELAY_MS, timeoutOf } from '@deepseek-ai/dsh-timeout'
+import type { CredentialRef } from '@deepseek-ai/dsh-credentials'
+import { idleWatchdog, timeoutOf } from '@deepseek-ai/dsh-timeout'
 import { serializeRequest } from './serialize.ts'
 import type { RequestDefaults } from './serialize.ts'
 import { parseSse } from './sse.ts'
@@ -34,26 +37,56 @@ export interface DeepSeekCatalogModel {
   contextWindow?: number
 }
 
-/** Constructor options for {@link DeepSeekAdapter}; the plugin's `apply` resolves them from Config + environment. */
-export interface DeepSeekAdapterOptions {
-  /** Bearer token sent in the `authorization` header on every request. */
-  apiKey: string
+/**
+ * Validated connection facts for one operation. The plugin's
+ * `resolveAdapterOptions` is the one explicit resolve step producing this
+ * shape; the adapter trusts it and re-reads it per operation, which is what
+ * makes a configuration change reach the next request without re-registration.
+ */
+export interface DeepSeekConnectionOptions {
   /** Endpoint base; `/chat/completions` is appended. */
   baseURL: string
+  /**
+   * Literal API key of this same resolution, when the configuration carried
+   * one. Travelling with the endpoint is the point: a request can never pair
+   * one generation's URL with another generation's secret.
+   */
+  apiKey?: string
+  /** Credential reference of this same resolution, resolved per request when no literal key exists. */
+  apiKeyEnv: CredentialRef
   /** Request defaults applied to every call (thinking mode, effort). */
-  defaults?: RequestDefaults
+  defaults: RequestDefaults
+  /** Default per-request output cap; explicit request values win. */
+  maxTokens: number
   /** Positive context capacity used when the selected model has no exact value. */
-  defaultContextWindow?: number
+  defaultContextWindow: number
   /** Advisory models exposed to discovery consumers; requests remain unrestricted. */
-  models?: readonly DeepSeekCatalogModel[]
+  models: readonly DeepSeekCatalogModel[]
   /** Maximum provider idle time while one stream read is outstanding. */
-  streamIdleTimeoutMs?: number
-  /** Provider-owned model-request retry policy; omission uses normal defaults. */
-  retryPolicy?: RetryPolicyConfig
+  streamIdleTimeoutMs: number
+  /** Provider-owned model-request retry policy, already resolved. */
+  retryPolicy: ResolvedRetryPolicy
+}
+
+/** Constructor options for {@link DeepSeekAdapter}: the two resolution seams the plugin owns. */
+export interface DeepSeekAdapterOptions {
+  /** Current validated connection facts; called once per operation. */
+  options: () => DeepSeekConnectionOptions
+  /**
+   * Resolve the bearer token for the connection facts of one request. The
+   * snapshot is passed in — never re-read — so the key can only ever come
+   * from the same resolution as the endpoint it is sent to. Throws `LlmError`
+   * `MISSING_CREDENTIAL` when no key is available anywhere.
+   */
+  resolveApiKey: (connection: DeepSeekConnectionOptions) => Promise<string>
 }
 
 /** Default maximum idle interval while an adapter stream read is outstanding. */
 export const DEFAULT_STREAM_IDLE_TIMEOUT_MS = 300_000
+/** Default combined request/response context capacity. */
+export const DEFAULT_CONTEXT_WINDOW = 1_000_000
+/** Default per-request output-token cap. */
+export const DEFAULT_MAX_TOKENS = 256_000
 const STREAM_IDLE_TIMEOUT_CODE = 'LLM_STREAM_IDLE_TIMEOUT'
 const OFF_REASONING_EFFORT = ReasoningEffortId('off')
 const HIGH_REASONING_EFFORT = ReasoningEffortId('high')
@@ -118,29 +151,8 @@ export function httpErrorCode(status: number, error?: WireError['error']): strin
  * map to `ABORTED`; the configured per-read idle watchdog maps to `TIMEOUT`.
  */
 export class DeepSeekAdapter extends LlmAdapter {
-  private readonly streamIdleTimeoutMs: number
-  private readonly retryPolicy: ResolvedRetryPolicy
-
-  constructor(private readonly options: DeepSeekAdapterOptions) {
+  constructor(private readonly config: DeepSeekAdapterOptions) {
     super()
-    if (options.defaults?.thinking === 'disabled'
-      && options.defaults.reasoningEffort !== undefined
-      && options.defaults.reasoningEffort !== 'off') {
-      throw new Error('llm-deepseek: only reasoningEffort "off" can be configured when thinking is disabled')
-    }
-    if (options.defaultContextWindow !== undefined
-      && (!Number.isInteger(options.defaultContextWindow) || options.defaultContextWindow <= 0)) {
-      throw new Error('llm-deepseek: defaultContextWindow must be a positive integer')
-    }
-    this.streamIdleTimeoutMs = options.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS
-    if (!Number.isFinite(this.streamIdleTimeoutMs)
-      || this.streamIdleTimeoutMs <= 0
-      || this.streamIdleTimeoutMs > MAX_TIMER_DELAY_MS) {
-      throw new Error(
-        `llm-deepseek: streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
-      )
-    }
-    this.retryPolicy = resolveRetryPolicy(options.retryPolicy, 'llm-deepseek: retryPolicy')
   }
 
   override providerInfo(provider: string): LlmProviderInfo {
@@ -148,11 +160,11 @@ export class DeepSeekAdapter extends LlmAdapter {
   }
 
   override providerRetryPolicy(_provider: string): ResolvedRetryPolicy {
-    return this.retryPolicy
+    return this.config.options().retryPolicy
   }
 
   override listModels(provider: string): Promise<readonly LlmModelInfo[]> {
-    return Promise.resolve((this.options.models ?? []).map(model => modelInfo(provider, model)))
+    return Promise.resolve(this.config.options().models.map(model => modelInfo(provider, model)))
   }
 
   override resolveModel(
@@ -160,15 +172,17 @@ export class DeepSeekAdapter extends LlmAdapter {
     model: string,
     _signal?: AbortSignal,
   ): Promise<LlmResolvedModelInfo> {
-    const configured = this.options.models?.find(entry => entry.id === model)
+    const connection = this.config.options()
+    const configured = connection.models.find(entry => entry.id === model)
     const contextWindow = configured?.contextWindow
-      ?? this.options.defaultContextWindow
+      ?? connection.defaultContextWindow
     return Promise.resolve({
       ...configured === undefined
         ? { provider, id: model, name: model }
         : modelInfo(provider, configured),
-      ...contextWindow === undefined ? {} : { context: { contextWindow } },
-      ...this.options.defaults?.thinking === 'disabled'
+      context: { contextWindow },
+      defaultMaxTokens: connection.maxTokens,
+      ...connection.defaults.thinking === 'disabled'
         ? {
           reasoning: {
             efforts: OFF_ONLY_REASONING_EFFORTS,
@@ -178,9 +192,9 @@ export class DeepSeekAdapter extends LlmAdapter {
         : {
           reasoning: {
             efforts: REASONING_EFFORTS,
-            defaultEffort: this.options.defaults?.reasoningEffort === 'off'
+            defaultEffort: connection.defaults.reasoningEffort === 'off'
               ? OFF_REASONING_EFFORT
-              : this.options.defaults?.reasoningEffort === 'max'
+              : connection.defaults.reasoningEffort === 'max'
                 ? MAX_REASONING_EFFORT
                 : HIGH_REASONING_EFFORT,
           },
@@ -189,12 +203,19 @@ export class DeepSeekAdapter extends LlmAdapter {
   }
 
   async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
+    // One resolution per stream call: connection facts and the credential
+    // freeze here and hold for this whole request, so an in-flight stream
+    // never observes a configuration change and the next call re-resolves.
+    // The key resolves *from this snapshot*, so an endpoint and the secret
+    // sent to it can never come from different configuration generations.
+    const connection = this.config.options()
+    const apiKey = await this.config.resolveApiKey(connection)
     const consumer = new AbortController()
     const upstream = options.signal === undefined
       ? consumer.signal
       : AbortSignal.any([options.signal, consumer.signal])
-    using watchdog = idleWatchdog(upstream, this.streamIdleTimeoutMs, STREAM_IDLE_TIMEOUT_CODE)
-    const iterator = this.request(options, watchdog.signal)[Symbol.asyncIterator]()
+    using watchdog = idleWatchdog(upstream, connection.streamIdleTimeoutMs, STREAM_IDLE_TIMEOUT_CODE)
+    const iterator = this.request(options, watchdog.signal, connection, apiKey)[Symbol.asyncIterator]()
     let exhausted = false
     try {
       while (true) {
@@ -208,7 +229,7 @@ export class DeepSeekAdapter extends LlmAdapter {
     } catch (error: unknown) {
       if (timeoutOf(watchdog.signal, STREAM_IDLE_TIMEOUT_CODE) !== undefined) {
         throw new LlmError(
-          `DeepSeek stream idle timeout after ${this.streamIdleTimeoutMs}ms`,
+          `DeepSeek stream idle timeout after ${connection.streamIdleTimeoutMs}ms`,
           'TIMEOUT',
           { cause: error },
         )
@@ -217,7 +238,7 @@ export class DeepSeekAdapter extends LlmAdapter {
         throw new LlmError('DeepSeek request aborted by caller', 'ABORTED', { cause: error })
       }
       if (error instanceof LlmError) throw error
-      throw new LlmError(`DeepSeek API stream from ${this.options.baseURL} failed`, 'TRANSPORT', { cause: error })
+      throw new LlmError(`DeepSeek API stream from ${connection.baseURL} failed`, 'TRANSPORT', { cause: error })
     } finally {
       consumer.abort('DeepSeek stream consumer stopped')
       if (!exhausted && iterator.return !== undefined) {
@@ -230,13 +251,18 @@ export class DeepSeekAdapter extends LlmAdapter {
     }
   }
 
-  private async * request(options: GenerateOptions, signal: AbortSignal): AsyncIterable<StreamChunk> {
-    const body = serializeRequest(options, this.options.defaults ?? {})
+  private async * request(
+    options: GenerateOptions,
+    signal: AbortSignal,
+    connection: DeepSeekConnectionOptions,
+    apiKey: string,
+  ): AsyncIterable<StreamChunk> {
+    const body = serializeRequest(options, connection.defaults)
     // Prepared outside the try so the TRANSPORT label below covers exactly the
     // transport boundary, never a serialization failure.
     const payload = JSON.stringify(body)
     const headers = {
-      'authorization': `Bearer ${this.options.apiKey}`,
+      'authorization': `Bearer ${apiKey}`,
       'content-type': 'application/json',
       'accept': 'text/event-stream',
       ...attributionHeaders(),
@@ -252,7 +278,7 @@ export class DeepSeekAdapter extends LlmAdapter {
     // outweighs its additional runtime dependencies.
     let response: Response
     try {
-      response = await fetch(`${this.options.baseURL}/chat/completions`, {
+      response = await fetch(`${connection.baseURL}/chat/completions`, {
         method: 'POST',
         headers,
         body: payload,
@@ -266,7 +292,7 @@ export class DeepSeekAdapter extends LlmAdapter {
       // lives on `cause`. Wrapping with the endpoint and chaining the cause
       // lets `errorChain` render the full diagnosis at every reporting seam.
       throw new LlmError(
-        `DeepSeek API request to ${this.options.baseURL} failed`,
+        `DeepSeek API request to ${connection.baseURL} failed`,
         'TRANSPORT',
         { cause: error },
       )
diff --git a/packages/llm/llm-deepseek/src/index.ts b/packages/llm/llm-deepseek/src/index.ts
index 00db46d642..3ecc0bec77 100644
--- a/packages/llm/llm-deepseek/src/index.ts
+++ b/packages/llm/llm-deepseek/src/index.ts
@@ -1,48 +1,76 @@
 /**
- * Register a {@link DeepSeekAdapter} for the `deepseek` provider route on `ctx.llm`. Configuration uses
- * Cordis schemastery; pass secrets from environment variables through `cordis.yml` with `!!js`,
- * as shown in the package README, rather than reading ad hoc files.
+ * Register a {@link DeepSeekAdapter} for the `deepseek-official` provider route on
+ * `ctx.llm`, with connection facts resolved per request instead of frozen at
+ * load: the plugin layers its `cordis.yml` entry config under the optional
+ * `llm-deepseek` user-settings section (`ctx.settings`) and resolves the API
+ * key through the optional credential seam (`ctx.credentials`), so a changed
+ * base URL, catalog, or key reaches the very next request without restarting
+ * anything, while an in-flight stream keeps the facts it started with. The
+ * one registration-captured fact — the retry policy — re-registers the route
+ * in place when it changes.
  * @module @deepseek-ai/dsh-llm-deepseek
  */
 
 import type { Context } from 'cordis'
 import z from 'schemastery'
-import { RetryPolicySchema } from '@deepseek-ai/dsh-llm'
+import { LlmError, resolveRetryPolicy, RetryPolicySchema } from '@deepseek-ai/dsh-llm'
 import type { RetryPolicyConfig } from '@deepseek-ai/dsh-llm'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { deepEqualJson, installSettingsSection, settingsNamespace } from '@deepseek-ai/dsh-settings'
 import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
-import { DEFAULT_STREAM_IDLE_TIMEOUT_MS, DeepSeekAdapter } from './adapter.ts'
-import type { DeepSeekCatalogModel } from './adapter.ts'
+import {
+  DEFAULT_CONTEXT_WINDOW,
+  DEFAULT_MAX_TOKENS,
+  DEFAULT_STREAM_IDLE_TIMEOUT_MS,
+  DeepSeekAdapter,
+} from './adapter.ts'
+import type { DeepSeekCatalogModel, DeepSeekConnectionOptions } from './adapter.ts'
 
-export { DeepSeekAdapter } from './adapter.ts'
-export type { DeepSeekAdapterOptions, DeepSeekCatalogModel } from './adapter.ts'
+export {
+  DEFAULT_CONTEXT_WINDOW,
+  DEFAULT_MAX_TOKENS,
+  DEFAULT_STREAM_IDLE_TIMEOUT_MS,
+  DeepSeekAdapter,
+} from './adapter.ts'
+export type { DeepSeekAdapterOptions, DeepSeekCatalogModel, DeepSeekConnectionOptions } from './adapter.ts'
 export type { RequestDefaults } from './serialize.ts'
 export type * from './types.ts'
 
 export const name = 'llm-deepseek'
 export const inject = ['llm']
 
+const NS = settingsNamespace('llm-deepseek')
+const DEFAULT_API_KEY_ENV = 'DEEPSEEK_API_KEY'
+/** The single provider route this plugin owns. */
+const PROVIDER = 'deepseek-official'
+
 const DEFAULT_MODELS: DeepSeekCatalogModel[] = [
-  { id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash', contextWindow: 256_000 },
-  { id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro', contextWindow: 256_000 },
+  { id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash', contextWindow: DEFAULT_CONTEXT_WINDOW },
+  { id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro', contextWindow: DEFAULT_CONTEXT_WINDOW },
 ]
 
 /**
- * Plugin config, validated by the same-named schemastery schema. Every field
- * is optional in yml: credentials/endpoint fall back to the environment (a
- * missing API key fails plugin load, not the first call), omitted thinking
- * mode uses the provider default, and omitted reasoning effort resolves to
- * `high`.
+ * Plugin config, validated by the same-named schemastery schema and doubling
+ * as the `llm-deepseek` settings-section shape. Every field is optional in
+ * yml: a missing API key resolves through {@link Config.apiKeyEnv} at each
+ * request (a request without any key fails with `MISSING_CREDENTIAL`, not at
+ * plugin load), omitted thinking mode uses the provider default, and omitted
+ * reasoning effort resolves to `high`.
  */
 export interface Config {
-  /** API key; falls back to $DEEPSEEK_API_KEY. Required one way or the other. */
+  /** Literal API key; prefer {@link apiKeyEnv} so no secret enters configuration files. */
   apiKey?: string
+  /** Credential reference (environment-variable name) resolved per request; defaults to `DEEPSEEK_API_KEY`. */
+  apiKeyEnv?: string
   /** Endpoint base; falls back to $DEEPSEEK_BASE_URL, then the public API. */
   baseURL?: string
   /** Deployment thinking policy; `disabled` limits every conversation request to `off`. */
   thinking?: 'enabled' | 'disabled'
   /** Default thinking effort (default `high`); `off` disables thinking per request. */
   reasoningEffort?: 'off' | 'high' | 'max'
-  /** Positive context capacity used when the selected model has no exact value. */
+  /** Default per-request output cap (default 256,000); explicit request values win. */
+  maxTokens?: number
+  /** Positive context capacity used when the selected model has no exact value (default 1,000,000). */
   defaultContextWindow?: number
   /** Advisory models shown by discovery consumers; defaults to V4 Flash and V4 Pro. */
   models?: DeepSeekCatalogModel[]
@@ -60,11 +88,13 @@ const catalogModel: z<DeepSeekCatalogModel> = z.object({
 })
 
 export const Config: z<Config> = z.object({
-  apiKey: z.string(),
+  apiKey: z.string().role('secret'),
+  apiKeyEnv: z.string().role('credential-ref').default(DEFAULT_API_KEY_ENV),
   baseURL: z.string(),
   thinking: z.union(['enabled', 'disabled']),
   reasoningEffort: z.union(['off', 'high', 'max']),
-  defaultContextWindow: z.number().step(1).min(1),
+  maxTokens: z.number().step(1).min(1).max(Number.MAX_SAFE_INTEGER).default(DEFAULT_MAX_TOKENS),
+  defaultContextWindow: z.number().step(1).min(1).default(DEFAULT_CONTEXT_WINDOW),
   models: z.array(catalogModel).default(DEFAULT_MODELS),
   streamIdleTimeoutMs: z.number().min(Number.MIN_VALUE).max(MAX_TIMER_DELAY_MS).default(DEFAULT_STREAM_IDLE_TIMEOUT_MS),
   retryPolicy: RetryPolicySchema,
@@ -73,6 +103,14 @@ export const Config: z<Config> = z.object({
 /** Public API default; the internal endpoint comes from $DEEPSEEK_BASE_URL. */
 export const PUBLIC_BASE_URL = 'https://api.deepseek.com'
 
+/**
+ * One resolution's complete request facts. Connection and credential facts
+ * are one value on purpose: a snapshot the resolver rejects keeps the whole
+ * previous generation, so a request can never pair a stale endpoint with a
+ * newer key.
+ */
+export type ResolvedDeepSeekOptions = DeepSeekConnectionOptions
+
 /** Resolve, validate, and detach the advisory model catalog. */
 function resolveModels(models: readonly DeepSeekCatalogModel[] | undefined): DeepSeekCatalogModel[] {
   const seen = new Set<string>()
@@ -98,29 +136,124 @@ function resolveModels(models: readonly DeepSeekCatalogModel[] | undefined): Dee
   })
 }
 
-export function apply(ctx: Context, config: Config): void {
+/**
+ * The one explicit resolve step from raw config to validated connection
+ * facts. Programmatic construction may bypass Schemastery normalization, so
+ * every default and bound is re-judged here — for the composition entry at
+ * load (fail loud) and for each settings snapshot at its first use.
+ * @param config - raw plugin config or resolved settings snapshot.
+ * @returns validated connection facts plus the credential reference.
+ */
+export function resolveAdapterOptions(config: Config): ResolvedDeepSeekOptions {
   if (config.thinking === 'disabled'
     && config.reasoningEffort !== undefined
     && config.reasoningEffort !== 'off') {
     throw new Error('llm-deepseek: only reasoningEffort "off" can be configured when thinking is disabled')
   }
-  const apiKey = config.apiKey ?? process.env.DEEPSEEK_API_KEY
-  if (apiKey === undefined || apiKey.length === 0) {
-    throw new Error('llm-deepseek: an API key is required (Config.apiKey or $DEEPSEEK_API_KEY)')
+  if (config.defaultContextWindow !== undefined
+    && (!Number.isInteger(config.defaultContextWindow) || config.defaultContextWindow <= 0)) {
+    throw new Error('llm-deepseek: defaultContextWindow must be a positive integer')
   }
-  const baseURL = config.baseURL ?? process.env.DEEPSEEK_BASE_URL ?? PUBLIC_BASE_URL
-  ctx.llm.registerAdapter(['deepseek'], new DeepSeekAdapter({
-    apiKey,
-    baseURL,
+  if (config.maxTokens !== undefined
+    && (!Number.isSafeInteger(config.maxTokens) || config.maxTokens <= 0)) {
+    throw new Error('llm-deepseek: maxTokens must be a positive safe integer')
+  }
+  const streamIdleTimeoutMs = config.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS
+  if (!Number.isFinite(streamIdleTimeoutMs)
+    || streamIdleTimeoutMs <= 0
+    || streamIdleTimeoutMs > MAX_TIMER_DELAY_MS) {
+    throw new Error(
+      `llm-deepseek: streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
+    )
+  }
+  return {
+    ...config.apiKey !== undefined && config.apiKey.length > 0 ? { apiKey: config.apiKey } : {},
+    apiKeyEnv: credentialRef(config.apiKeyEnv ?? DEFAULT_API_KEY_ENV),
+    baseURL: config.baseURL ?? process.env.DEEPSEEK_BASE_URL ?? PUBLIC_BASE_URL,
     defaults: {
       thinking: config.thinking,
       reasoningEffort: config.reasoningEffort,
     },
-    ...config.defaultContextWindow === undefined
-      ? {}
-      : { defaultContextWindow: config.defaultContextWindow },
+    maxTokens: config.maxTokens ?? DEFAULT_MAX_TOKENS,
+    defaultContextWindow: config.defaultContextWindow ?? DEFAULT_CONTEXT_WINDOW,
     models: resolveModels(config.models),
-    streamIdleTimeoutMs: config.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS,
-    ...config.retryPolicy === undefined ? {} : { retryPolicy: config.retryPolicy },
-  }))
+    streamIdleTimeoutMs,
+    retryPolicy: resolveRetryPolicy(config.retryPolicy, 'llm-deepseek: retryPolicy'),
+  }
+}
+
+export function apply(ctx: Context, config: Config): void {
+  let current: () => Config = () => config
+  let lastRaw: Config | undefined
+  let lastGood: ResolvedDeepSeekOptions | undefined
+  const options = (): ResolvedDeepSeekOptions => {
+    const raw = current()
+    if (raw === lastRaw && lastGood !== undefined) return lastGood
+    try {
+      const next = resolveAdapterOptions(raw)
+      lastRaw = raw
+      lastGood = next
+      return next
+    } catch (error) {
+      // Static composition resolves before anything registers, so this branch
+      // only sees a live settings snapshot failing a beyond-schema bound:
+      // keep serving the last good facts and say so once per bad snapshot.
+      if (lastGood === undefined) throw error
+      lastRaw = raw
+      ctx.logger.error('llm-deepseek: keeping the last good configuration after an invalid settings section')
+      ctx.logger.error(error)
+      return lastGood
+    }
+  }
+  options()
+
+  const resolveApiKey = async (connection: ResolvedDeepSeekOptions): Promise<string> => {
+    // Every credential fact comes from the caller's snapshot, so a rejected
+    // settings generation cannot leak its key onto the previous endpoint.
+    if (connection.apiKey !== undefined) return connection.apiKey
+    const ref = connection.apiKeyEnv
+    const credentials = ctx.get('credentials')
+    if (credentials !== undefined) {
+      const hit = await credentials.resolve(ref)
+      if (hit !== undefined) return hit.value
+    } else {
+      // Without the seam, keep the historical ambient fallback so a plain
+      // cordis.yml composition works from the environment alone.
+      const ambient = process.env[ref]
+      if (ambient !== undefined && ambient.length > 0) return ambient
+    }
+    throw new LlmError(
+      `llm-deepseek: no API key for provider route "${PROVIDER}"; store ${ref} through the credentials`
+      + ` service (the web Models page writes it), export ${ref} in the launching environment, or — as a`
+      + ' last resort — set a literal "apiKey" in the llm-deepseek settings section',
+      'MISSING_CREDENTIAL',
+    )
+  }
+
+  const adapter = new DeepSeekAdapter({ options, resolveApiKey })
+  ctx.llm.registerConfigurableProviders([
+    { provider: PROVIDER, displayName: 'DeepSeek', settingsNs: NS, settingsPath: [] },
+  ])
+  // Route effects bind to this apply fiber via the stable `ctx` reference,
+  // even when a swap runs inside the scoped settings callback below.
+  const registration = ctx.llm.registerAdapter([PROVIDER], adapter)
+  let registeredPolicy = options().retryPolicy
+  const ensureRegistrationFacts = (): void => {
+    const policy = options().retryPolicy
+    if (deepEqualJson(policy, registeredPolicy)) return
+    // The registry captures the retry policy at registration, so it is the one
+    // fact per-request resolution cannot refresh. `replace` re-reads it in one
+    // synchronous registry section: disposing and re-registering instead would
+    // publish an empty route set between the two, and an observer that reacted
+    // to it would see this provider disappear and come back.
+    registration.replace([PROVIDER])
+    registeredPolicy = policy
+  }
+
+  installSettingsSection(ctx, NS, Config, config, {
+    setSource: (source) => {
+      current = source
+    },
+    onChange: ensureRegistrationFacts,
+  })
 }
diff --git a/packages/llm/llm-deepseek/src/serialize.ts b/packages/llm/llm-deepseek/src/serialize.ts
index fb6b8d9117..bb6443425e 100644
--- a/packages/llm/llm-deepseek/src/serialize.ts
+++ b/packages/llm/llm-deepseek/src/serialize.ts
@@ -139,7 +139,10 @@ export function serializeMessages(messages: Message[]): WireMessage[] {
  * @param defaults - adapter-level thinking defaults; undefined fields put nothing on the wire.
  * @returns the chat-completions request body.
  */
-export function serializeRequest(options: GenerateOptions, defaults: RequestDefaults = {}): WireRequest {
+export function serializeRequest(
+  options: GenerateOptions,
+  defaults: RequestDefaults = {},
+): WireRequest {
   const messages: WireMessage[] = []
   if (options.system !== undefined) {
     messages.push({ role: 'system', content: options.system })
@@ -169,7 +172,7 @@ export function serializeRequest(options: GenerateOptions, defaults: RequestDefa
       : {},
     ...tools !== undefined && tools.length > 0 ? { tools } : {},
     ...options.temperature !== undefined ? { temperature: options.temperature } : {},
-    ...options.maxTokens !== undefined ? { max_tokens: options.maxTokens } : {},
+    ...options.maxTokens === undefined ? {} : { max_tokens: options.maxTokens },
     ...options.stop !== undefined ? { stop: options.stop } : {},
   }
 }
diff --git a/packages/llm/llm-deepseek/tests/adapter.e2e.ts b/packages/llm/llm-deepseek/tests/adapter.e2e.ts
index f6d97031c4..5468cd8d9f 100644
--- a/packages/llm/llm-deepseek/tests/adapter.e2e.ts
+++ b/packages/llm/llm-deepseek/tests/adapter.e2e.ts
@@ -1,7 +1,11 @@
-import { afterEach, describe, expect, it } from 'vitest'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import LlmService, { createUserMessage, CallId, ReasoningEffortId , createMessage } from '@deepseek-ai/dsh-llm'
 import type { Message, ToolSchema } from '@deepseek-ai/dsh-llm'
+import { CredentialsLocal } from '@deepseek-ai/dsh-credentials-local'
 import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
 import type { Config } from '@deepseek-ai/dsh-llm-deepseek'
 import { assemble, type AssembledResult } from './assemble.ts'
@@ -53,6 +57,34 @@ const weatherTool: ToolSchema = {
 }
 
 describe.skipIf(!process.env.DEEPSEEK_API_KEY)('llm-deepseek e2e (real API)', () => {
+  it('serves a real request with the key held only by a credentials-local document', async () => {
+    const key = process.env.DEEPSEEK_API_KEY
+    if (key === undefined) throw new Error('e2e ran without DEEPSEEK_API_KEY')
+    const dir = await mkdtemp(join(tmpdir(), 'dsh-e2e-credentials-'))
+    try {
+      await writeFile(join(dir, '.env'), `DEEPSEEK_API_KEY=${key}\n`, { mode: 0o600 })
+      // Scrub the ambient variable so only the credential seam can supply the
+      // key: this request proves the per-request resolution path end to end.
+      vi.stubEnv('DEEPSEEK_API_KEY', '')
+      const ctx = new Context()
+      contexts.push(ctx)
+      await ctx.plugin(LlmService)
+      await ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+      await ctx.plugin(LlmDeepSeek, {})
+
+      const result = await assemble(ctx, {
+        model: FLASH,
+        messages: ask('Reply with exactly the word: pong'),
+        maxTokens: 50,
+      })
+      expect(result.finish.kind).toBe('stop')
+      expect(textOf(result).toLowerCase()).toContain('pong')
+    } finally {
+      vi.unstubAllEnvs()
+      await rm(dir, { recursive: true, force: true })
+    }
+  })
+
   it('flash dynamically switches from off to high', async () => {
     const ctx = await harness(FLASH, { reasoningEffort: 'off' })
     const withoutThinking = await assemble(ctx,{
@@ -140,7 +172,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('llm-deepseek e2e (real API)', ()
     const ctx = await harness(FLASH, { thinking: 'disabled' })
     const kinds: string[] = []
     for await (const chunk of ctx.llm.stream({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: FLASH,
       messages: ask('Count from 1 to 5, digits only.'),
       maxTokens: 50,
diff --git a/packages/llm/llm-deepseek/tests/adapter.spec.ts b/packages/llm/llm-deepseek/tests/adapter.spec.ts
index 1b64c57982..ec4a271f15 100644
--- a/packages/llm/llm-deepseek/tests/adapter.spec.ts
+++ b/packages/llm/llm-deepseek/tests/adapter.spec.ts
@@ -1,5 +1,3 @@
-import { createServer } from 'node:http'
-import type { IncomingMessage, Server, ServerResponse } from 'node:http'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import LlmService, { createUserMessage,
@@ -14,90 +12,18 @@ import LlmService, { createUserMessage,
 import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
 import { SessionId } from '@deepseek-ai/dsh-session'
 import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
-import { DeepSeekAdapter } from '@deepseek-ai/dsh-llm-deepseek'
+import { DeepSeekAdapter, resolveAdapterOptions } from '@deepseek-ai/dsh-llm-deepseek'
 import { httpErrorCode } from '../src/adapter.ts'
 import { assemble } from './assemble.ts'
-
-/** One scripted behavior for the next request the mock server receives. */
-type Behavior =
-  | { kind: 'sse'; events: string[]; delayMs?: number }
-  | { kind: 'http-error'; status: number; body: string; contentType?: string; headers?: Record<string, string> }
-  | { kind: 'close-early'; events: string[] }
-
-interface MockServer {
-  url: string
-  /** Bodies of received requests, in order. */
-  requests: unknown[]
-  /** Header bags of received requests, in order (parallel to `requests`). */
-  headers: IncomingMessage['headers'][]
-  script: Behavior[]
-  close(): Promise<void>
-}
-
-const servers: Server[] = []
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
+import type { Behavior } from './mock-server.ts'
 
 afterEach(async () => {
-  await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
+  await closeMockServers()
   vi.unstubAllEnvs()
   vi.useRealTimers()
 })
 
-/** Local chat-completions stand-in: replays scripted behaviors per request. */
-async function mockServer(script: Behavior[]): Promise<MockServer> {
-  const requests: unknown[] = []
-  const headers: IncomingMessage['headers'][] = []
-  const server = createServer((request: IncomingMessage, response: ServerResponse) => {
-    let body = ''
-    request.on('data', (chunk: Buffer) => { body += chunk.toString('utf8') })
-    request.on('end', () => {
-      requests.push(JSON.parse(body))
-      headers.push(request.headers)
-      const behavior = script.shift()
-      if (!behavior) {
-        response.writeHead(500).end('mock script exhausted')
-        return
-      }
-      if (behavior.kind === 'http-error') {
-        response.writeHead(behavior.status, {
-          'content-type': behavior.contentType ?? 'application/json',
-          ...behavior.headers,
-        })
-        response.end(behavior.body)
-        return
-      }
-      response.writeHead(200, { 'content-type': 'text/event-stream' })
-      const write = (index: number): void => {
-        if (index >= behavior.events.length) {
-          if (behavior.kind === 'sse') response.end()
-          else response.destroy() // close-early: drop the socket mid-stream
-          return
-        }
-        response.write(`data: ${behavior.events[index]}\n\n`)
-        setTimeout(() => { write(index + 1) }, behavior.kind === 'sse' ? behavior.delayMs ?? 0 : 5)
-      }
-      write(0)
-    })
-  })
-  servers.push(server)
-  await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
-  const address = server.address()
-  if (address === null || typeof address === 'string') throw new Error('no port')
-  return {
-    url: `http://127.0.0.1:${address.port}`,
-    requests,
-    headers,
-    script,
-    close: () => new Promise(resolve => server.close(() => { resolve() })),
-  }
-}
-
-const textEvents = [
-  '{"choices":[{"delta":{"role":"assistant","content":null,"reasoning_content":""}}]}',
-  '{"choices":[{"delta":{"content":"hello"}}]}',
-  '{"choices":[{"delta":{"content":""},"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
-  '[DONE]',
-]
-
 async function harness(baseURL: string, config: object = {}) {
   const ctx = new Context()
   await ctx.plugin(LlmService)
@@ -105,6 +31,15 @@ async function harness(baseURL: string, config: object = {}) {
   return ctx
 }
 
+/** Direct adapter over the plugin's real resolve step, with a static key. */
+function adapterOf(config: Partial<LlmDeepSeek.Config> & { apiKey?: string } = {}): DeepSeekAdapter {
+  const { apiKey, ...rest } = config
+  return new DeepSeekAdapter({
+    options: () => resolveAdapterOptions(rest),
+    resolveApiKey: () => Promise.resolve(apiKey ?? 'k'),
+  })
+}
+
 describe('DeepSeekAdapter against a mock server', () => {
   it('streams a text generation end to end through the assembler', async () => {
     const server = await mockServer([{ kind: 'sse', events: textEvents }])
@@ -124,6 +59,7 @@ describe('DeepSeekAdapter against a mock server', () => {
     // The wire request carried the auth header contents we configured.
     expect(server.requests[0]).toMatchObject({
       model: 'deepseek-v4-flash',
+      max_tokens: 256_000,
       reasoning_effort: 'high',
       stream: true,
       stream_options: { include_usage: true },
@@ -143,7 +79,7 @@ describe('DeepSeekAdapter against a mock server', () => {
 
     const kinds: string[] = []
     for await (const chunk of ctx.llm.stream({
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-flash',
       messages: [createUserMessage({
         content: [{ type: 'text', text: 'hi' }],
@@ -232,6 +168,20 @@ describe('DeepSeekAdapter against a mock server', () => {
     })
   })
 
+  it('uses the configured maxTokens default and preserves an explicit request cap', async () => {
+    const server = await mockServer([
+      { kind: 'sse', events: textEvents },
+      { kind: 'sse', events: textEvents },
+    ])
+    const ctx = await harness(server.url, { maxTokens: 32_000 })
+
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [], maxTokens: 8_192 })
+
+    expect(server.requests[0]).toMatchObject({ max_tokens: 32_000 })
+    expect(server.requests[1]).toMatchObject({ max_tokens: 8_192 })
+  })
+
   it('publishes only off and omits the wire effort when thinking is disabled', async () => {
     const server = await mockServer([{ kind: 'sse', events: textEvents }])
     const ctx = await harness(server.url, { thinking: 'disabled' })
@@ -247,7 +197,7 @@ describe('DeepSeekAdapter against a mock server', () => {
       thinking: { type: 'disabled' },
     })
     expect(server.requests[0]).not.toHaveProperty('reasoning_effort')
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'deepseek-v4-flash'))
       .resolves.toMatchObject({
         reasoning: {
           efforts: [{ id: ReasoningEffortId('off'), name: 'Off' }],
@@ -275,14 +225,10 @@ describe('DeepSeekAdapter against a mock server', () => {
     'rejects direct adapter effort %s before I/O when thinking is disabled',
     async (effort) => {
       const server = await mockServer([])
-      const adapter = new DeepSeekAdapter({
-        apiKey: 'test-key',
-        baseURL: server.url,
-        defaults: { thinking: 'disabled' },
-      })
+      const adapter = adapterOf({ apiKey: 'test-key', baseURL: server.url, thinking: 'disabled' })
 
       const stream = adapter.stream({
-        provider: 'deepseek',
+        provider: 'deepseek-official',
         model: 'deepseek-v4-flash',
         reasoningEffort: ReasoningEffortId(effort),
         messages: [createUserMessage({
@@ -483,13 +429,13 @@ describe('DeepSeekAdapter against a mock server', () => {
   })
 
   it('throws EMPTY_RESPONSE when the response has no body', async () => {
-    const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
+    const adapter = adapterOf({ baseURL: 'http://127.0.0.1:1' })
     const fetchSpy = vi.spyOn(globalThis, 'fetch').mockResolvedValue(
       new Response(null, { status: 200 }),
     )
     try {
       const iterate = async (): Promise<void> => {
-        for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
+        for await (const _chunk of adapter.stream({ provider: 'deepseek-official', model: 'm', messages: [] })) { /* drain */ }
       }
       await expect(iterate()).rejects.toThrow(/no response body/)
     } finally {
@@ -521,7 +467,7 @@ describe('DeepSeekAdapter against a mock server', () => {
     const pending = (async () => {
       const chunks = []
       for await (const chunk of ctx.llm.stream({
-        provider: 'deepseek',
+        provider: 'deepseek-official',
         model: 'deepseek-v4-flash',
         messages: [],
         signal: controller.signal,
@@ -538,10 +484,10 @@ describe('DeepSeekAdapter against a mock server', () => {
   it('maps connection failures to TRANSPORT without losing the cause', async () => {
     const cause = new TypeError('connection refused')
     const fetchSpy = vi.spyOn(globalThis, 'fetch').mockRejectedValue(cause)
-    const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'https://example.invalid' })
+    const adapter = adapterOf({ baseURL: 'https://example.invalid' })
     try {
       const drain = async (): Promise<void> => {
-        for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
+        for await (const _chunk of adapter.stream({ provider: 'deepseek-official', model: 'm', messages: [] })) { /* drain */ }
       }
       await expect(drain()).rejects.toMatchObject({ code: 'TRANSPORT', cause })
     } finally {
@@ -555,10 +501,10 @@ describe('DeepSeekAdapter against a mock server', () => {
       failed.reject('offline')
       return failed.promise
     })
-    const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'https://example.invalid' })
+    const adapter = adapterOf({ baseURL: 'https://example.invalid' })
     try {
       const drain = async (): Promise<void> => {
-        for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
+        for await (const _chunk of adapter.stream({ provider: 'deepseek-official', model: 'm', messages: [] })) { /* drain */ }
       }
       await expect(drain()).rejects.toMatchObject({
         message: 'DeepSeek API request to https://example.invalid failed',
@@ -585,14 +531,10 @@ describe('DeepSeekAdapter against a mock server', () => {
       })
       return Promise.resolve(new Response(body, { status: 200 }))
     })
-    const adapter = new DeepSeekAdapter({
-      apiKey: 'k',
-      baseURL: 'https://example.invalid',
-      streamIdleTimeoutMs: 100,
-    })
+    const adapter = adapterOf({ baseURL: 'https://example.invalid', streamIdleTimeoutMs: 100 })
     try {
       const drain = (async () => {
-        for await (const _chunk of adapter.stream({ provider: 'deepseek', model: 'm', messages: [] })) { /* drain */ }
+        for await (const _chunk of adapter.stream({ provider: 'deepseek-official', model: 'm', messages: [] })) { /* drain */ }
       })()
       const rejected = expect(drain).rejects.toMatchObject({ code: 'TIMEOUT' })
       await vi.advanceTimersByTimeAsync(0)
@@ -627,9 +569,16 @@ describe('plugin registration and config', () => {
       apiKey: 'k',
       baseURL: server.url,
     })
-    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
+    expect(ctx.llm.listConfigurableProviders()).toEqual([{
+      provider: 'deepseek-official',
+      displayName: 'DeepSeek',
+      settingsNs: 'llm-deepseek',
+      settingsPath: [],
+    }])
     await fiber.dispose()
     expect(ctx.llm.listProviders()).toEqual([])
+    expect(ctx.llm.listConfigurableProviders()).toEqual([])
   })
 
   it('registers retryPolicy from the provider config', async () => {
@@ -644,7 +593,7 @@ describe('plugin registration and config', () => {
       },
     })
 
-    expect(ctx.llm.providerRetryPolicy('deepseek')).toEqual({
+    expect(ctx.llm.providerRetryPolicy('deepseek-official')).toEqual({
       mode: 'always',
       initialDelayMs: 25,
       maxDelayMs: 100,
@@ -656,17 +605,18 @@ describe('plugin registration and config', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmDeepSeek, { apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
-    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
-    await expect(ctx.llm.listModels('deepseek')).resolves.toEqual([
-      { provider: 'deepseek', id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash' },
-      { provider: 'deepseek', id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro' },
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([
+      { provider: 'deepseek-official', id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash' },
+      { provider: 'deepseek-official', id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro' },
     ])
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'deepseek-v4-flash'))
       .resolves.toMatchObject({
-        provider: 'deepseek',
+        provider: 'deepseek-official',
         id: 'deepseek-v4-flash',
         name: 'DeepSeek-V4-Flash',
-        context: { contextWindow: 256_000 },
+        context: { contextWindow: 1_000_000 },
+        defaultMaxTokens: 256_000,
         reasoning: {
           efforts: [
             { id: ReasoningEffortId('off'), name: 'Off' },
@@ -686,7 +636,7 @@ describe('plugin registration and config', () => {
       baseURL: 'http://127.0.0.1:1',
       reasoningEffort: effort,
     })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'unlisted-pass-through'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'unlisted-pass-through'))
       .resolves.toMatchObject({
         reasoning: {
           efforts: [
@@ -708,7 +658,7 @@ describe('plugin registration and config', () => {
       thinking: 'disabled',
       reasoningEffort: 'off',
     })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'unlisted-pass-through'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'unlisted-pass-through'))
       .resolves.toMatchObject({
         reasoning: {
           efforts: [{ id: ReasoningEffortId('off'), name: 'Off' }],
@@ -733,23 +683,16 @@ describe('plugin registration and config', () => {
   )
 
   it.each(['high', 'max'] as const)(
-    'rejects disabled-thinking effort %s at the direct constructor boundary',
+    'rejects disabled-thinking effort %s at the resolver boundary',
     (reasoningEffort) => {
-      expect(() => new DeepSeekAdapter({
-        apiKey: 'k',
-        baseURL: 'http://127.0.0.1:1',
-        defaults: { thinking: 'disabled', reasoningEffort },
-      })).toThrow(/only reasoningEffort "off"/)
+      expect(() => resolveAdapterOptions({ thinking: 'disabled', reasoningEffort }))
+        .toThrow(/only reasoningEffort "off"/)
     },
   )
 
-  it('accepts disabled thinking with off at the direct constructor boundary', async () => {
-    const adapter = new DeepSeekAdapter({
-      apiKey: 'k',
-      baseURL: 'http://127.0.0.1:1',
-      defaults: { thinking: 'disabled', reasoningEffort: 'off' },
-    })
-    await expect(adapter.resolveModel('deepseek', 'pass-through')).resolves.toMatchObject({
+  it('accepts disabled thinking with off at the resolver boundary', async () => {
+    const adapter = adapterOf({ thinking: 'disabled', reasoningEffort: 'off' })
+    await expect(adapter.resolveModel('deepseek-official', 'pass-through')).resolves.toMatchObject({
       reasoning: {
         efforts: [{ id: ReasoningEffortId('off'), name: 'Off' }],
         defaultEffort: ReasoningEffortId('off'),
@@ -761,9 +704,9 @@ describe('plugin registration and config', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     LlmDeepSeek.apply(ctx, { apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
-    await expect(ctx.llm.listModels('deepseek')).resolves.toEqual([
-      { provider: 'deepseek', id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash' },
-      { provider: 'deepseek', id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro' },
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([
+      { provider: 'deepseek-official', id: 'deepseek-v4-flash', name: 'DeepSeek-V4-Flash' },
+      { provider: 'deepseek-official', id: 'deepseek-v4-pro', name: 'DeepSeek-V4-Pro' },
     ])
   })
 
@@ -783,19 +726,22 @@ describe('plugin registration and config', () => {
         },
       ],
     })
-    await expect(ctx.llm.listModels('deepseek')).resolves.toEqual([
-      { provider: 'deepseek', id: 'private-fast', name: 'private-fast' },
-      { provider: 'deepseek', id: 'private-reasoner', name: 'Private Reasoner', description: 'Higher reasoning budget' },
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([
+      { provider: 'deepseek-official', id: 'private-fast', name: 'private-fast' },
+      { provider: 'deepseek-official', id: 'private-reasoner', name: 'Private Reasoner', description: 'Higher reasoning budget' },
     ])
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'private-fast'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'private-fast'))
       .resolves.toMatchObject({ context: { contextWindow: 32_000 } })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'private-reasoner'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'private-reasoner'))
       .resolves.toMatchObject({
         name: 'Private Reasoner',
         description: 'Higher reasoning budget',
       })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'arbitrary-unlisted'))
-      .resolves.not.toHaveProperty('context')
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'arbitrary-unlisted'))
+      .resolves.toMatchObject({
+        context: { contextWindow: 1_000_000 },
+        defaultMaxTokens: 256_000,
+      })
   })
 
   it('uses exact model capacity before the adapter-wide default', async () => {
@@ -811,11 +757,11 @@ describe('plugin registration and config', () => {
       ],
     })
 
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'inherits-default'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'inherits-default'))
       .resolves.toMatchObject({ context: { contextWindow: 256_000 } })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'exact-override'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'exact-override'))
       .resolves.toMatchObject({ context: { contextWindow: 64_000 } })
-    await expect(ctx.llm.resolveModelInfo('deepseek', 'unlisted-pass-through'))
+    await expect(ctx.llm.resolveModelInfo('deepseek-official', 'unlisted-pass-through'))
       .resolves.toMatchObject({ context: { contextWindow: 256_000 } })
   })
 
@@ -827,7 +773,7 @@ describe('plugin registration and config', () => {
       baseURL: 'http://127.0.0.1:1',
       models: [],
     })
-    await expect(ctx.llm.listModels('deepseek')).resolves.toEqual([])
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([])
   })
 
   it.each([
@@ -863,11 +809,8 @@ describe('plugin registration and config', () => {
   it.each([0, 1.5])(
     'rejects invalid adapter-wide default context capacity %s',
     async (defaultContextWindow) => {
-      expect(() => new DeepSeekAdapter({
-        apiKey: 'k',
-        baseURL: 'http://127.0.0.1:1',
-        defaultContextWindow,
-      })).toThrow(/defaultContextWindow must be a positive integer/)
+      expect(() => resolveAdapterOptions({ defaultContextWindow }))
+        .toThrow(/defaultContextWindow must be a positive integer/)
 
       const ctx = new Context()
       await ctx.plugin(LlmService)
@@ -880,22 +823,68 @@ describe('plugin registration and config', () => {
     },
   )
 
+  it.each([0, 1.5, Number.MAX_SAFE_INTEGER + 1])(
+    'rejects invalid adapter-wide maxTokens %s',
+    async (maxTokens) => {
+      expect(() => resolveAdapterOptions({ maxTokens }))
+        .toThrow(/maxTokens must be a positive safe integer/)
+
+      const ctx = new Context()
+      await ctx.plugin(LlmService)
+      await expect(ctx.plugin(LlmDeepSeek, {
+        apiKey: 'k',
+        baseURL: 'http://127.0.0.1:1',
+        maxTokens,
+      })).rejects.toThrow(/maxTokens/)
+      expect(ctx.llm.listProviders()).toEqual([])
+    },
+  )
+
   it('falls back to DEEPSEEK_API_KEY and DEEPSEEK_BASE_URL env vars', async () => {
     vi.stubEnv('DEEPSEEK_API_KEY', 'env-key')
     vi.stubEnv('DEEPSEEK_BASE_URL', 'http://127.0.0.1:1')
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmDeepSeek, {})
-    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
   })
 
-  it('throws a clear error when no API key is available', async () => {
+  it('loads keyless, keeps the catalog browsable, and fails the request actionably', async () => {
     vi.stubEnv('DEEPSEEK_API_KEY', '')
     const ctx = new Context()
     await ctx.plugin(LlmService)
-    await expect(ctx.plugin(LlmDeepSeek, {}))
-      .rejects.toThrow(/an API key is required/)
-    expect(ctx.llm.listProviders()).toEqual([])
+    await ctx.plugin(LlmDeepSeek, { baseURL: 'http://127.0.0.1:1' })
+    // First-boot onboarding: the route registers so models stay discoverable;
+    // only the request itself needs a key.
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toHaveLength(2)
+    await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toMatchObject({ code: 'MISSING_CREDENTIAL' })
+    // The guidance leads with the credential store — the path that keeps the
+    // secret out of configuration files — and mentions a literal key last.
+    await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toThrow(/store DEEPSEEK_API_KEY through the credentials service.*as a last resort.*"apiKey"/s)
+  })
+
+  it('reads the ambient variable when no credentials seam is mounted', async () => {
+    // The plain cordis.yml composition: no credential provider, the key in
+    // the launching environment.
+    vi.stubEnv('DEEPSEEK_API_KEY', 'ambient-key')
+    const server = await mockServer([{ kind: 'sse', events: textEvents }])
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+    await ctx.plugin(LlmDeepSeek, { baseURL: server.url })
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(server.headers[0]?.authorization).toBe('Bearer ambient-key')
+  })
+
+  it('treats an empty ambient variable as no key when no credentials seam is mounted', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+    await ctx.plugin(LlmDeepSeek, { baseURL: 'http://127.0.0.1:1' })
+    await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toMatchObject({ code: 'MISSING_CREDENTIAL' })
   })
 
   it('prefers explicit config over env for key and base URL', async () => {
@@ -924,26 +913,35 @@ describe('plugin registration and config', () => {
     await ctx.plugin(LlmService)
     // Registration succeeds; no call is made (would hit api.deepseek.com).
     await ctx.plugin(LlmDeepSeek, {})
-    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
   })
 
-  it('adapter is constructible directly for embedding', async () => {
-    const adapter = new DeepSeekAdapter({ apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
+  it('adapter is constructible directly for embedding over the shared resolver', async () => {
+    const adapter = adapterOf()
     expect(adapter).toBeInstanceOf(DeepSeekAdapter)
-    await expect(adapter.listModels('deepseek')).resolves.toEqual([])
+    // Direct embedding shares the plugin's one resolve step, so it advertises
+    // the same default catalog instead of a divergent empty one.
+    await expect(adapter.listModels('deepseek-official')).resolves.toHaveLength(2)
+  })
+
+  it('resolves connection facts and the credential exactly once per stream call', async () => {
+    const server = await mockServer([{ kind: 'sse', events: textEvents }])
+    const options = vi.fn(() => resolveAdapterOptions({ baseURL: server.url }))
+    const resolveApiKey = vi.fn(() => Promise.resolve('per-request-key'))
+    const adapter = new DeepSeekAdapter({ options, resolveApiKey })
+
+    for await (const _chunk of adapter.stream({ provider: 'deepseek-official', model: 'm', messages: [] })) { /* drain */ }
+
+    expect(options).toHaveBeenCalledTimes(1)
+    expect(resolveApiKey).toHaveBeenCalledTimes(1)
+    expect(server.headers[0]?.authorization).toBe('Bearer per-request-key')
   })
 
   it('rejects invalid idle watchdog bounds for direct and plugin composition', async () => {
-    expect(() => new DeepSeekAdapter({
-      apiKey: 'k',
-      baseURL: 'http://127.0.0.1:1',
-      streamIdleTimeoutMs: Number.POSITIVE_INFINITY,
-    })).toThrow(/streamIdleTimeoutMs.*positive finite/)
-    expect(() => new DeepSeekAdapter({
-      apiKey: 'k',
-      baseURL: 'http://127.0.0.1:1',
-      streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1,
-    })).toThrow(/streamIdleTimeoutMs.*no greater/)
+    expect(() => resolveAdapterOptions({ streamIdleTimeoutMs: Number.POSITIVE_INFINITY }))
+      .toThrow(/streamIdleTimeoutMs.*positive finite/)
+    expect(() => resolveAdapterOptions({ streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1 }))
+      .toThrow(/streamIdleTimeoutMs.*no greater/)
 
     const ctx = new Context()
     await ctx.plugin(LlmService)
diff --git a/packages/llm/llm-deepseek/tests/assemble.ts b/packages/llm/llm-deepseek/tests/assemble.ts
index 61726fd1d4..490b4e87cf 100644
--- a/packages/llm/llm-deepseek/tests/assemble.ts
+++ b/packages/llm/llm-deepseek/tests/assemble.ts
@@ -17,7 +17,7 @@ export interface AssembledResult {
 
 export async function assemble(ctx: Context, options: Omit<GenerateOptions, 'provider'> & { provider?: string }): Promise<AssembledResult> {
   const assembler = new BlockAssembler()
-  const request = { provider: 'deepseek', ...options }
+  const request = { provider: 'deepseek-official', ...options }
   for await (const chunk of ctx.llm.stream(request)) assembler.push(chunk)
   return {
     message: assembler.message({
diff --git a/packages/llm/llm-deepseek/tests/dynamic-config.spec.ts b/packages/llm/llm-deepseek/tests/dynamic-config.spec.ts
new file mode 100644
index 0000000000..25cf4f293b
--- /dev/null
+++ b/packages/llm/llm-deepseek/tests/dynamic-config.spec.ts
@@ -0,0 +1,195 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import LlmService from '@deepseek-ai/dsh-llm'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal } from '@deepseek-ai/dsh-credentials-local'
+import { settingsNamespace } from '@deepseek-ai/dsh-settings'
+import { SettingsLocal } from '@deepseek-ai/dsh-settings-local'
+import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
+import { assemble } from './assemble.ts'
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
+
+const NS = settingsNamespace('llm-deepseek')
+const KEY_REF = credentialRef('DEEPSEEK_API_KEY')
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  while (cleanups.length > 0) await cleanups.pop()!()
+  await closeMockServers()
+  vi.unstubAllEnvs()
+})
+
+async function home(): Promise<string> {
+  const dir = await mkdtemp(join(tmpdir(), 'dsh-llm-dynamic-'))
+  cleanups.push(() => rm(dir, { recursive: true, force: true }))
+  return dir
+}
+
+interface Harness {
+  ctx: Context
+  settingsFiber: { dispose(): Promise<void> }
+}
+
+/**
+ * Real dynamic composition: llm + settings-local + credentials-local +
+ * llm-deepseek over one temp harness home. `watch: false` keeps every change
+ * flowing through the in-process write path, which is deterministic; external
+ * file watching is the providers' own covered concern.
+ */
+async function boot(dir: string, config: object): Promise<Harness> {
+  const ctx = new Context()
+  cleanups.push(async () => {
+    await ctx.fiber.dispose()
+  })
+  await ctx.plugin(LlmService)
+  const settingsFiber = ctx.plugin(SettingsLocal, { path: join(dir, 'settings.yaml'), watch: false })
+  await settingsFiber
+  await ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+  await ctx.plugin(LlmDeepSeek, config)
+  return { ctx, settingsFiber }
+}
+
+function prompt(ctx: Context) {
+  return assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+}
+
+describe('request-level dynamic configuration', () => {
+  it('routes the next request with the freshly resolved base URL and credential', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const dir = await home()
+    await writeFile(join(dir, '.env'), 'DEEPSEEK_API_KEY=first-key\n')
+    const serverA = await mockServer([{ kind: 'sse', events: textEvents }])
+    const serverB = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx } = await boot(dir, { baseURL: serverA.url })
+
+    await prompt(ctx)
+    expect(serverA.headers[0]?.authorization).toBe('Bearer first-key')
+
+    await ctx.settings.update(NS, { baseURL: serverB.url })
+    await ctx.credentials.set(KEY_REF, 'second-key')
+
+    await prompt(ctx)
+    // No restart, no re-registration: the next request resolved both facts.
+    expect(serverA.requests).toHaveLength(1)
+    expect(serverB.headers[0]?.authorization).toBe('Bearer second-key')
+  })
+
+  it('prefers a literal settings apiKey over the credential layers', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const dir = await home()
+    await writeFile(join(dir, '.env'), 'DEEPSEEK_API_KEY=file-key\n')
+    const server = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx } = await boot(dir, { baseURL: server.url })
+
+    await ctx.settings.update(NS, { apiKey: 'literal-key' })
+    await prompt(ctx)
+    expect(server.headers[0]?.authorization).toBe('Bearer literal-key')
+  })
+
+  it('starts keyless and serves the next request once the key arrives', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const dir = await home()
+    const server = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx } = await boot(dir, { baseURL: server.url })
+
+    await expect(prompt(ctx)).rejects.toMatchObject({ code: 'MISSING_CREDENTIAL' })
+    await ctx.credentials.set(KEY_REF, 'sk-arrived')
+    await prompt(ctx)
+    expect(server.headers[0]?.authorization).toBe('Bearer sk-arrived')
+  })
+
+  it('advertises a live settings catalog without re-registration', async () => {
+    const dir = await home()
+    const { ctx } = await boot(dir, { apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
+
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toHaveLength(2)
+    await ctx.settings.update(NS, { models: [{ id: 'settings-model', name: 'From Settings' }] })
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([
+      { provider: 'deepseek-official', id: 'settings-model', name: 'From Settings' },
+    ])
+  })
+
+  it('re-registers the route in place when the captured retry policy changes, without an empty-registry window', async () => {
+    const dir = await home()
+    const { ctx } = await boot(dir, { apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
+
+    // Observing the topology event, not just the end state: disposing and
+    // re-registering also lands on the right final registry, but publishes an
+    // empty route set in between, so an observer sees the provider disappear.
+    const observed: string[][] = []
+    ctx.on('llm/adapters-updated', () => {
+      observed.push(ctx.llm.listProviders().map(provider => provider.id))
+    })
+
+    await ctx.settings.update(NS, {
+      retryPolicy: { mode: 'always', backoff: { initialDelayMs: 25, maxDelayMs: 100, jitterRatio: 0.2 } },
+    })
+    expect(ctx.llm.providerRetryPolicy('deepseek-official')).toEqual({
+      mode: 'always',
+      initialDelayMs: 25,
+      maxDelayMs: 100,
+      jitterRatio: 0.2,
+    })
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
+    expect(observed).toEqual([['deepseek-official']])
+  })
+
+  it('keeps the last good options when a settings snapshot fails beyond-schema validation', async () => {
+    const dir = await home()
+    const { ctx } = await boot(dir, { apiKey: 'k', baseURL: 'http://127.0.0.1:1' })
+
+    // Schema-valid but resolver-invalid: duplicate catalog ids pass the array
+    // schema and fail the explicit resolve step.
+    await ctx.settings.update(NS, { models: [{ id: 'dup' }, { id: 'dup' }] })
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toHaveLength(2)
+    await ctx.settings.update(NS, { models: [{ id: 'recovered' }] })
+    await expect(ctx.llm.listModels('deepseek-official')).resolves.toEqual([
+      { provider: 'deepseek-official', id: 'recovered', name: 'recovered' },
+    ])
+  })
+
+  it('sends the whole last-good snapshot when a rejected one changed both the key and the URL', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const dir = await home()
+    const good = await mockServer([{ kind: 'sse', events: textEvents }])
+    const rejected = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx } = await boot(dir, { apiKey: 'good-key', baseURL: good.url })
+
+    // One snapshot moves the endpoint AND the literal key, and fails the
+    // resolve step beyond the schema (duplicate catalog ids).
+    await ctx.settings.update(NS, {
+      apiKey: 'rejected-key',
+      baseURL: rejected.url,
+      models: [{ id: 'dup' }, { id: 'dup' }],
+    })
+
+    await prompt(ctx)
+    // The rejected generation contributes nothing: not its endpoint, and — the
+    // regression this pins — not its key either.
+    expect(rejected.requests).toHaveLength(0)
+    expect(good.requests).toHaveLength(1)
+    expect(good.headers[0]?.authorization).toBe('Bearer good-key')
+  })
+
+  it('falls back to the composition entry when settings detach', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const dir = await home()
+    await writeFile(join(dir, '.env'), 'DEEPSEEK_API_KEY=steady-key\n')
+    const serverA = await mockServer([{ kind: 'sse', events: textEvents }])
+    const serverB = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx, settingsFiber } = await boot(dir, { baseURL: serverA.url })
+
+    await ctx.settings.update(NS, { baseURL: serverB.url })
+    await prompt(ctx)
+    expect(serverB.requests).toHaveLength(1)
+
+    await settingsFiber.dispose()
+    await prompt(ctx)
+    expect(serverA.requests).toHaveLength(1)
+    expect(serverA.headers[0]?.authorization).toBe('Bearer steady-key')
+  })
+})
diff --git a/packages/llm/llm-deepseek/tests/loader-composition.spec.ts b/packages/llm/llm-deepseek/tests/loader-composition.spec.ts
new file mode 100644
index 0000000000..402f94441d
--- /dev/null
+++ b/packages/llm/llm-deepseek/tests/loader-composition.spec.ts
@@ -0,0 +1,174 @@
+/**
+ * Real-composition guard for the dynamic-configuration chain: LlmService,
+ * settings-local, credentials-local, and llm-deepseek boot from a test-only
+ * cordis.yml through the actual Loader + Include path, external edits of
+ * settings.yaml and .env hot-publish through their providers, and the very
+ * next request carries the fresh base URL and credential. The same adapter
+ * composition without settings or credentials entries keeps entry-config
+ * behavior — the documented optional-inject fallback.
+ */
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { pathToFileURL } from 'node:url'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import Loader from '@cordisjs/plugin-loader'
+import Include from '@cordisjs/plugin-include'
+import LlmService from '@deepseek-ai/dsh-llm'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import CredentialsLocal from '@deepseek-ai/dsh-credentials-local'
+import { settingsNamespace } from '@deepseek-ai/dsh-settings'
+import SettingsLocal from '@deepseek-ai/dsh-settings-local'
+import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
+import { assemble } from './assemble.ts'
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
+
+const NS = settingsNamespace('llm-deepseek')
+const KEY_REF = credentialRef('DEEPSEEK_API_KEY')
+
+let root: string | undefined
+let context: Context | undefined
+
+afterEach(async () => {
+  await context?.fiber.dispose()
+  context = undefined
+  if (root !== undefined) await rm(root, { recursive: true, force: true })
+  root = undefined
+  await closeMockServers()
+  vi.unstubAllEnvs()
+})
+
+async function loadComposition(
+  options: { withDynamic: boolean; baseURL: string; reuseRoot?: string },
+): Promise<{ ctx: Context; settingsPath: string; envPath: string }> {
+  // A reused root is the restart case: the same harness home, its documents
+  // exactly as the previous process left them.
+  const fresh = options.reuseRoot === undefined
+  root = options.reuseRoot ?? await mkdtemp(join(tmpdir(), 'dsh-llm-composition-'))
+  const settingsPath = join(root, 'settings.yaml')
+  const envPath = join(root, '.env')
+  if (options.withDynamic && fresh) {
+    await writeFile(settingsPath, '# personal settings\n')
+    await writeFile(envPath, 'DEEPSEEK_API_KEY=boot-key\n')
+  }
+
+  const configPath = join(root, 'cordis.yml')
+  await writeFile(configPath, [
+    '- id: llm',
+    "  name: 'test-llm-service'",
+    ...options.withDynamic
+      ? [
+        '- id: settings',
+        "  name: '@deepseek-ai/dsh-settings-local'",
+        '  config:',
+        `    path: ${JSON.stringify(settingsPath)}`,
+        '    debounceMs: 10',
+        '- id: credentials',
+        "  name: '@deepseek-ai/dsh-credentials-local'",
+        '  config:',
+        `    path: ${JSON.stringify(envPath)}`,
+        '    debounceMs: 10',
+      ]
+      : [],
+    '- id: llm-deepseek',
+    "  name: '@deepseek-ai/dsh-llm-deepseek'",
+    '  config:',
+    `    baseURL: ${JSON.stringify(options.baseURL)}`,
+    ...options.withDynamic ? [] : ['    apiKey: entry-key'],
+    '',
+  ].join('\n'))
+
+  const ctx = new Context()
+  context = ctx
+  ctx.baseUrl = pathToFileURL(root).href + '/'
+  await ctx.plugin(Loader)
+  ctx.loader.builtins.include = Include
+  const modules = new Map<string, unknown>([
+    ['test-llm-service', LlmService],
+    ['@deepseek-ai/dsh-settings-local', SettingsLocal],
+    ['@deepseek-ai/dsh-credentials-local', CredentialsLocal],
+    ['@deepseek-ai/dsh-llm-deepseek', LlmDeepSeek],
+  ])
+  ctx.loader.internal = {
+    version: 'v2',
+    async import(specifier: string) {
+      if (!modules.has(specifier)) throw new Error(`unexpected Loader import: ${specifier}`)
+      return modules.get(specifier)
+    },
+  } as unknown as NonNullable<typeof ctx.loader.internal>
+  await ctx.loader.create({
+    name: 'cordis:include',
+    config: { path: pathToFileURL(configPath).href },
+  })
+  await ctx.loader.await()
+  return { ctx, settingsPath, envPath }
+}
+
+describe('llm-deepseek real dynamic composition', () => {
+  it('boots from cordis.yml and routes the next request after external settings and .env edits', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const serverA = await mockServer([{ kind: 'sse', events: textEvents }])
+    const serverB = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx, settingsPath, envPath } = await loadComposition({ withDynamic: true, baseURL: serverA.url })
+
+    expect(ctx.get('settings')!.describe().map(entry => entry.ns)).toEqual([NS])
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(serverA.headers[0]?.authorization).toBe('Bearer boot-key')
+
+    // External edits, exactly as a user or the web UI would leave them on disk.
+    await writeFile(settingsPath, `llm-deepseek:\n  baseURL: ${serverB.url}\n`)
+    await vi.waitFor(() => {
+      expect((ctx.get('settings')!.get(NS) as { baseURL?: string }).baseURL).toBe(serverB.url)
+    }, { timeout: 5000 })
+    await writeFile(envPath, 'DEEPSEEK_API_KEY=rotated-key\n')
+    await vi.waitFor(async () => {
+      expect(await ctx.get('credentials')!.resolve(KEY_REF)).toEqual({ value: 'rotated-key', source: 'file' })
+    }, { timeout: 5000 })
+
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(serverA.requests).toHaveLength(1)
+    expect(serverB.headers[0]?.authorization).toBe('Bearer rotated-key')
+  })
+
+  it('keeps a stored key writable and rotatable across a real restart', async () => {
+    // No ambient DEEPSEEK_API_KEY: the shipped surfaces no longer hoist
+    // $DSH_HOME/.env into process.env, so a stored key must stay file-sourced.
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const first = await mockServer([{ kind: 'sse', events: textEvents }])
+    const second = await mockServer([{ kind: 'sse', events: textEvents }])
+    const boot = await loadComposition({ withDynamic: true, baseURL: first.url })
+    const home = root!
+    await boot.ctx.get('credentials')!.set(KEY_REF, 'stored-by-ui')
+    expect(await boot.ctx.get('credentials')!.describe(KEY_REF))
+      .toEqual({ configured: true, source: 'file', writable: true })
+    await assemble(boot.ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(first.headers[0]?.authorization).toBe('Bearer stored-by-ui')
+    await boot.ctx.fiber.dispose()
+    context = undefined
+
+    // Restart over the same harness home.
+    const restarted = await loadComposition({ withDynamic: true, baseURL: second.url, reuseRoot: home })
+    const credentials = restarted.ctx.get('credentials')!
+    // The stored key is still the provider's own writable file entry — not a
+    // read-only launch override, which is what hoisting it would have made it.
+    expect(await credentials.resolve(KEY_REF)).toEqual({ value: 'stored-by-ui', source: 'file' })
+    expect(await credentials.describe(KEY_REF)).toEqual({ configured: true, source: 'file', writable: true })
+    // Rotation still works after the restart, and the next request uses it.
+    await credentials.set(KEY_REF, 'rotated-after-restart')
+    await assemble(restarted.ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(second.headers[0]?.authorization).toBe('Bearer rotated-after-restart')
+  })
+
+  it('boots the same adapter without settings or credentials entries on entry config alone', async () => {
+    vi.stubEnv('DEEPSEEK_API_KEY', '')
+    const server = await mockServer([{ kind: 'sse', events: textEvents }])
+    const { ctx } = await loadComposition({ withDynamic: false, baseURL: server.url })
+
+    expect(ctx.get('settings')).toBeUndefined()
+    expect(ctx.get('credentials')).toBeUndefined()
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(server.headers[0]?.authorization).toBe('Bearer entry-key')
+  })
+})
diff --git a/packages/llm/llm-deepseek/tests/mock-server.ts b/packages/llm/llm-deepseek/tests/mock-server.ts
new file mode 100644
index 0000000000..cdb499e143
--- /dev/null
+++ b/packages/llm/llm-deepseek/tests/mock-server.ts
@@ -0,0 +1,82 @@
+import { createServer } from 'node:http'
+import type { IncomingMessage, Server, ServerResponse } from 'node:http'
+
+/** One scripted behavior for the next request the mock server receives. */
+export type Behavior =
+  | { kind: 'sse'; events: string[]; delayMs?: number }
+  | { kind: 'http-error'; status: number; body: string; contentType?: string; headers?: Record<string, string> }
+  | { kind: 'close-early'; events: string[] }
+
+export interface MockServer {
+  url: string
+  /** Bodies of received requests, in order. */
+  requests: unknown[]
+  /** Header bags of received requests, in order (parallel to `requests`). */
+  headers: IncomingMessage['headers'][]
+  script: Behavior[]
+  close(): Promise<void>
+}
+
+const servers: Server[] = []
+
+/** Close every server opened since the last call; run from each spec's afterEach. */
+export async function closeMockServers(): Promise<void> {
+  await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
+}
+
+/** A minimal complete text generation, reused by request-shape assertions. */
+export const textEvents = [
+  '{"choices":[{"delta":{"role":"assistant","content":null,"reasoning_content":""}}]}',
+  '{"choices":[{"delta":{"content":"hello"}}]}',
+  '{"choices":[{"delta":{"content":""},"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
+  '[DONE]',
+]
+
+/** Local chat-completions stand-in: replays scripted behaviors per request. */
+export async function mockServer(script: Behavior[]): Promise<MockServer> {
+  const requests: unknown[] = []
+  const headers: IncomingMessage['headers'][] = []
+  const server = createServer((request: IncomingMessage, response: ServerResponse) => {
+    let body = ''
+    request.on('data', (chunk: Buffer) => { body += chunk.toString('utf8') })
+    request.on('end', () => {
+      requests.push(JSON.parse(body))
+      headers.push(request.headers)
+      const behavior = script.shift()
+      if (!behavior) {
+        response.writeHead(500).end('mock script exhausted')
+        return
+      }
+      if (behavior.kind === 'http-error') {
+        response.writeHead(behavior.status, {
+          'content-type': behavior.contentType ?? 'application/json',
+          ...behavior.headers,
+        })
+        response.end(behavior.body)
+        return
+      }
+      response.writeHead(200, { 'content-type': 'text/event-stream' })
+      const write = (index: number): void => {
+        if (index >= behavior.events.length) {
+          if (behavior.kind === 'sse') response.end()
+          else response.destroy() // close-early: drop the socket mid-stream
+          return
+        }
+        response.write(`data: ${behavior.events[index]}\n\n`)
+        setTimeout(() => { write(index + 1) }, behavior.kind === 'sse' ? behavior.delayMs ?? 0 : 5)
+      }
+      write(0)
+    })
+  })
+  servers.push(server)
+  await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('no port')
+  return {
+    url: `http://127.0.0.1:${address.port}`,
+    requests,
+    headers,
+    script,
+    close: () => new Promise(resolve => server.close(() => { resolve() })),
+  }
+}
diff --git a/packages/llm/llm-deepseek/tests/serialize.spec.ts b/packages/llm/llm-deepseek/tests/serialize.spec.ts
index 539dec3258..167feef89a 100644
--- a/packages/llm/llm-deepseek/tests/serialize.spec.ts
+++ b/packages/llm/llm-deepseek/tests/serialize.spec.ts
@@ -4,7 +4,7 @@ import type { ContentBlock, GenerateOptions, Message } from '@deepseek-ai/dsh-ll
 import { serializeMessages, serializeRequest } from '../src/serialize.ts'
 
 function request(overrides: Partial<GenerateOptions> = {}): GenerateOptions {
-  return { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [], ...overrides }
+  return { provider: 'deepseek-official', model: 'deepseek-v4-flash', messages: [], ...overrides }
 }
 
 describe('serializeMessages', () => {
diff --git a/packages/llm/llm-deepseek/tsconfig.json b/packages/llm/llm-deepseek/tsconfig.json
index 45c2af21a5..ee8a81e73b 100644
--- a/packages/llm/llm-deepseek/tsconfig.json
+++ b/packages/llm/llm-deepseek/tsconfig.json
@@ -20,6 +20,12 @@
     {
       "path": "../../llm/llm"
     },
+    {
+      "path": "../../credentials/credentials"
+    },
+    {
+      "path": "../../settings/settings"
+    },
     {
       "path": "../../support/invariants"
     },
diff --git a/packages/llm/llm-pi-ai/README.i18n.yaml b/packages/llm/llm-pi-ai/README.i18n.yaml
index fb47822ca5..2a1a47b253 100644
--- a/packages/llm/llm-pi-ai/README.i18n.yaml
+++ b/packages/llm/llm-pi-ai/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/llm/llm-pi-ai/README.md
-README.md: ac47cf6a21285fc887948a5a7798a9f1cb9157b0
-README.zh.md: 650ec7a578549cec6bd001e15ff5be4dea86e942
+README.md: e8c2682cbb72ca1ac6a5ad6b26bdf63f0695716b
+README.zh.md: 5fb19ee1343e905352609d96e7f540c1a411b4d8
diff --git a/packages/llm/llm-pi-ai/README.md b/packages/llm/llm-pi-ai/README.md
index ac47cf6a21..e8c2682cbb 100644
--- a/packages/llm/llm-pi-ai/README.md
+++ b/packages/llm/llm-pi-ai/README.md
@@ -2,21 +2,21 @@
 
 English | [中文](README.zh.md)
 
-Generic multi-provider adapter for the harness LLM seam backed by [`@earendil-works/pi-ai`](https://www.npmjs.com/package/@earendil-works/pi-ai). One plugin instance owns an explicit list of provider profiles; every request selects a profile with `GenerateOptions.provider` and resolves `GenerateOptions.model` dynamically from pi-ai's installed catalog.
+Generic multi-provider adapter for the harness LLM seam backed by [`@earendil-works/pi-ai`](https://www.npmjs.com/package/@earendil-works/pi-ai). One plugin instance owns a dict of provider profiles keyed by route; every request selects a profile with `GenerateOptions.provider` and resolves `GenerateOptions.model` dynamically from pi-ai's installed catalog.
 
 The package root exposes the Cordis plugin contract and `PiAiAdapter`; profile resolution, model construction, replay conversion, and stream conversion remain package-internal.
 
 ## Config
 
-Configure credentials and deployment-specific transport settings per provider. Omitting `apiKey` delegates authentication to pi-ai's provider-native ambient discovery. `baseURL` overrides only the endpoint of the selected catalog model, preserving its API family and compatibility metadata, so private proxies such as `https://proxy.example.com:8443` remain supported.
+Configure credentials and deployment-specific transport settings per provider, keyed by the provider route itself. Prefer `apiKeyEnv` — a credential *reference* resolved per request — over a literal `apiKey`, so no secret enters this file. Omitting **both** is what delegates authentication to pi-ai's provider-native ambient discovery; a configured reference that resolves to nothing fails the request with `MISSING_CREDENTIAL` instead, because falling through would authenticate with whatever unrelated key the environment happens to hold. `baseURL` overrides only the endpoint of the selected catalog model, preserving its API family and compatibility metadata, so private proxies such as `https://proxy.example.com:8443` remain supported.
 
 ```yaml
 - id: llm
   name: '@deepseek-ai/dsh-llm-pi-ai'
   config:
     providers:
-      - provider: openai
-        apiKey: !!js process.env.OPENAI_API_KEY
+      openai:
+        apiKeyEnv: OPENAI_API_KEY
         baseURL: https://proxy.example.com:8443
         reasoning: high
         retryPolicy:
@@ -26,22 +26,28 @@ Configure credentials and deployment-specific transport settings per provider. O
             initialDelayMs: 500
             maxDelayMs: 10000
             jitterRatio: 0.1
-      - provider: anthropic
-        apiKey: !!js process.env.ANTHROPIC_API_KEY
+      anthropic:
+        apiKeyEnv: ANTHROPIC_API_KEY
         streamIdleTimeoutMs: 300000
-      - provider: openrouter
-        apiKey: !!js process.env.OPENROUTER_API_KEY
+      openrouter:
+        apiKeyEnv: OPENROUTER_API_KEY
         headers:
           X-Deployment: production
 ```
 
-Each provider name must exist in pi-ai's installed catalog and may appear only once in this plugin instance. Registration with `ctx.llm` is atomic: a collision with any provider route already owned by another adapter fails plugin loading without registering the remaining routes. Model ids are not lifecycle config; an unknown model fails before any provider request with `LlmError('UNKNOWN_MODEL')`.
+Each dict key must exist in pi-ai's installed catalog; the dict shape makes duplicates unrepresentable, and the pre-release array shape (with per-profile `provider` fields) fails load with migration directions. `providers` may also be empty or omitted entirely: the adapter then mounts **dormant** — zero routes, no extra catalog entries — and registers routes the moment the `llm-pi-ai:` settings section supplies profiles, dropping them again when it empties. Dormant or not, the plugin declares every installed catalog provider in the configurable-provider directory (`ctx.llm.listConfigurableProviders()`, settings path `providers.<provider>`), so configuration surfaces can offer the full catalog before any route exists. Which adapters exist is composition; which providers run can be entirely the user's settings document. Registration with `ctx.llm` is atomic: a collision with any provider route already owned by another adapter fails plugin loading without registering the remaining routes. Model ids are not lifecycle config; an unknown model fails before any provider request with `LlmError('UNKNOWN_MODEL')`.
+
+## Dynamic configuration (settings + credentials)
+
+The adapter reads its profiles through a thunk **once per operation** instead of freezing them at construction. The plugin registers the `llm-pi-ai` namespace on the optional `ctx.settings` seam with this same `Config` schema and its `cordis.yml` entry as the composition `base`, and because `providers` is a dict, the base and the user's `llm-pi-ai:` settings section merge **per provider**: a user can add a route, override one field of a composition route, or point a route at another proxy, all effective on the next request with no restart. Without a mounted settings service the entry config alone drives the adapter, unchanged.
+
+Credentials resolve per stream call: a non-empty literal `apiKey` wins, then `apiKeyEnv` through the optional `ctx.credentials` seam (`$DSH_HOME/.env` under the live environment; exactly that variable without a mounted seam). A profile naming no credential at all — and only that case — defers to pi-ai's ambient discovery. The route set and each route's captured retry policy are the registration-level facts: when either changes, the plugin replaces its registration atomically (same adapter instance, candidate set validated first), so a route another adapter already owns leaves the previous routes serving and reverting to a working configuration re-applies. Provider key order never counts as a change. A live settings snapshot naming an unknown provider (or failing any other resolver bound) keeps the last good profiles and logs the failure; the entry config itself still fails plugin load.
 
 The adapter exposes each configured provider's installed pi-ai models through `ctx.llm.listModels(provider)`. This is provider-neutral selector metadata derived from `getModels(provider)`; request-time resolution still performs the authoritative catalog lookup, so discovery does not create a second model registry. `ctx.llm.resolveModelInfo(provider, model)` performs that exact descriptor lookup once and returns its identity, context window, and selectable thinking levels, keeping authoritative metadata on the route-owning adapter rather than its consumers.
 
 The `reasoning.efforts` list is pi-ai's ordered `getSupportedThinkingLevels(model)` result without filtering or normalization, including `off` and the model-specific availability of `xhigh` or `max`. The Harness exposes each canonical pi-ai level as an opaque ID; provider/model wire spellings remain inside pi-ai's `thinkingLevelMap`. A non-reasoning model therefore exposes pi-ai's `off` choice. The profile `reasoning` value, including `off`, is the deployment default when configured; omitting it preserves the provider default. Per-request `GenerateOptions.reasoningEffort` takes precedence, and any explicit value absent from the exact model capability fails with `UNSUPPORTED_REASONING_EFFORT` before network I/O instead of being clamped. pi-ai's common stream options represent `off` by omitting `reasoning`.
 
-Supported profile fields are `provider`, `apiKey`, `baseURL`, `headers`, `reasoning`, `thinkingBudgets`, `cacheRetention`, `transport`, `timeoutMs`, `websocketConnectTimeoutMs`, `streamIdleTimeoutMs`, and `retryPolicy`. Each profile's optional retry policy is captured with that provider route; omission uses bounded normal defaults. The stream-idle interval is a positive finite Node timer delay, defaults to five minutes, and covers only an outstanding provider read, not consumer think time. Harness app attribution wins a conflicting configured header name.
+Supported profile fields are `apiKey`, `apiKeyEnv`, `baseURL`, `headers`, `reasoning`, `thinkingBudgets`, `cacheRetention`, `transport`, `timeoutMs`, `websocketConnectTimeoutMs`, `streamIdleTimeoutMs`, and `retryPolicy`. Each profile's optional retry policy is captured with that provider route; omission uses bounded normal defaults. The stream-idle interval is a positive finite Node timer delay, defaults to five minutes, and covers only an outstanding provider read, not consumer think time. Harness app attribution wins a conflicting configured header name.
 
 The adapter forces pi-ai's SDK `maxRetries` to zero so one `stream()` call makes one provider request. The removed profile fields `maxRetries` and `maxRetryDelayMs` fail load instead of silently multiplying or hiding the separately composed agent-level retry budget. Idle expiry aborts the SDK's stable request signal and surfaces `TIMEOUT`; an earlier caller abort remains `ABORTED`.
 
@@ -71,7 +77,7 @@ pi-ai installs several provider SDKs and lazy-loads the one selected by the cata
 
 ## Testing
 
-Unit tests use pi-ai catalog models redirected to local mock servers and cover provider/profile routing, one wire request per adapter call, idle-timeout response termination, caller abort, native API selection, endpoint overrides, attribution, conversion, replay-state validation, and cross-provider/model replay within one adapter instance. Real-API coverage remains key-gated under `pnpm run test:e2e`.
+Unit tests use pi-ai catalog models redirected to local mock servers and cover provider/profile routing, one wire request per adapter call, idle-timeout response termination, caller abort, native API selection, endpoint overrides, attribution, conversion, replay-state validation, and cross-provider/model replay within one adapter instance. `tests/dynamic-config.spec.ts` drives real settings-local and credentials-local providers: a settings-born route registers live and drops when the user layer resets, `apiKeyEnv` credentials rotate between requests, and an unknown-provider snapshot keeps the last good profiles. `tests/loader-composition.spec.ts` boots the dormant posture from a test-only `cordis.yml` through the actual Loader and registers its route from an on-disk `settings.yaml` edit. Real-API coverage remains key-gated under `pnpm run test:e2e`.
 
 ## Model Experience
 
@@ -105,6 +111,8 @@ Recorded response content appends to the next request and does not invalidate it
 
 ## Known Limitations and Deferred Work
 
+- **Settings can add or override routes, not remove composition routes** — the user layer merges over the composition `base`, so deleting a `cordis.yml`-provided provider is a composition change; `replace` on the namespace only resets the user layer.
+- **`headers` can carry a credential the redactor never sees** — the profile's `headers` dict is plain strings, so `Authorization` or `api-key` set there is returned verbatim by a redacted `describe()` and rendered by any configuration UI. Store credentials as `apiKeyEnv` references; making the dict write-only is deferred with the rest of the [wire-boundary work](../llm/README.md#known-limitations-and-deferred-work).
 - **Catalog membership is required** — custom model ids that are absent from the installed pi-ai catalog fail with `UNKNOWN_MODEL`, even when a provider profile supplies a custom endpoint.
 - **`GenerateOptions.stop` is unsupported** — pi-ai's common stream options cannot guarantee stop-sequence behavior across providers, so the adapter rejects the field.
 - **In-history `system` messages use pi-ai's common context conversion** — provider-specific placement follows pi-ai rather than a harness-owned wire override.
diff --git a/packages/llm/llm-pi-ai/README.zh.md b/packages/llm/llm-pi-ai/README.zh.md
index 650ec7a578..5fb19ee134 100644
--- a/packages/llm/llm-pi-ai/README.zh.md
+++ b/packages/llm/llm-pi-ai/README.zh.md
@@ -2,21 +2,21 @@
 
 [English](README.md) | 中文
 
-基于 [`@earendil-works/pi-ai`](https://www.npmjs.com/package/@earendil-works/pi-ai) 的 harness LLM（大语言模型）seam 通用多提供方适配器。一个插件实例拥有显式提供方 profile 列表；每个请求使用 `GenerateOptions.provider` 选择 profile，并从 pi-ai 已安装 catalog 中动态解析 `GenerateOptions.model`。
+基于 [`@earendil-works/pi-ai`](https://www.npmjs.com/package/@earendil-works/pi-ai) 的 harness LLM（大语言模型）seam 通用多提供方适配器。一个插件实例拥有一份以路由为键的提供方 profile 字典；每个请求使用 `GenerateOptions.provider` 选择 profile，并从 pi-ai 已安装 catalog 中动态解析 `GenerateOptions.model`。
 
 包（package）根入口导出 Cordis 插件契约与 `PiAiAdapter`；profile 解析、模型构造、回放转换和流转换保留在包内部。
 
 ## 配置
 
-按提供方配置凭证与部署特定传输设置。省略 `apiKey` 会将认证委托给 pi-ai 的提供方原生环境发现。`baseURL` 只会覆盖所选 catalog 模型的端点，保留其 API 家族与兼容性元数据，因此仍支持 `https://proxy.example.com:8443` 等私有 proxy。
+按提供方配置凭据与部署特定传输设置，并以提供方路由本身为键。优先使用 `apiKeyEnv`——按请求解析的凭据*引用*——而非字面 `apiKey`，让机密不进入该文件。**两者**都省略，才会把认证委托给 pi-ai 的提供方原生环境发现；已配置却解析不出任何值的引用则相反，会让请求以 `MISSING_CREDENTIAL` 失败，因为放行下去就会用环境里恰好持有的某个无关密钥完成认证。`baseURL` 只会覆盖所选 catalog 模型的端点，保留其 API 家族与兼容性元数据，因此仍支持 `https://proxy.example.com:8443` 等私有 proxy。
 
 ```yaml
 - id: llm
   name: '@deepseek-ai/dsh-llm-pi-ai'
   config:
     providers:
-      - provider: openai
-        apiKey: !!js process.env.OPENAI_API_KEY
+      openai:
+        apiKeyEnv: OPENAI_API_KEY
         baseURL: https://proxy.example.com:8443
         reasoning: high
         retryPolicy:
@@ -26,22 +26,28 @@
             initialDelayMs: 500
             maxDelayMs: 10000
             jitterRatio: 0.1
-      - provider: anthropic
-        apiKey: !!js process.env.ANTHROPIC_API_KEY
+      anthropic:
+        apiKeyEnv: ANTHROPIC_API_KEY
         streamIdleTimeoutMs: 300000
-      - provider: openrouter
-        apiKey: !!js process.env.OPENROUTER_API_KEY
+      openrouter:
+        apiKeyEnv: OPENROUTER_API_KEY
         headers:
           X-Deployment: production
 ```
 
-每个提供方名称必须存在于 pi-ai 已安装 catalog 中，且在此插件实例中最多出现一次。向 `ctx.llm` 注册具有原子性：如果与另一适配器已拥有的任何提供方路由冲突，插件会加载失败，不注册剩余路由。模型 id 不是生命周期配置；未知模型会在发起任何提供方请求前以 `LlmError('UNKNOWN_MODEL')` 失败。
+每个字典键都必须存在于 pi-ai 已安装 catalog 中；字典形状使重复项无法表示，发布前的数组形状（每个 profile 携带 `provider` 字段）会加载失败并给出迁移指引。`providers` 也可以为空或整体省略：适配器将以**休眠**姿态挂载——零路由、模型选择器不多一条——一旦 `llm-pi-ai:` settings 分节提供了 profile 就即时注册路由，分节清空时随之撤销。无论是否休眠，插件都会在可配置提供方目录（`ctx.llm.listConfigurableProviders()`，settings 路径 `providers.<provider>`）中声明每个已安装 catalog 提供方，因此配置界面可以在任何路由存在之前就提供完整 catalog。哪些适配器存在归组合面；哪些提供方在运行可以完全交给用户的设置文档。向 `ctx.llm` 注册具有原子性：如果与另一适配器已拥有的任何提供方路由冲突，插件会加载失败，不注册剩余路由。模型 id 不是生命周期配置；未知模型会在发起任何提供方请求前以 `LlmError('UNKNOWN_MODEL')` 失败。
+
+## 动态配置（settings + credentials）
+
+适配器经由一个 thunk **每操作读取一次** profile，而非在构造期冻结。插件在可选的 `ctx.settings` seam 上用同一份 `Config` schema 注册 `llm-pi-ai` namespace，并以其 `cordis.yml` 条目为组合 `base`；由于 `providers` 是字典，base 与用户的 `llm-pi-ai:` settings 分节**按提供方**合并：用户可以新增路由、覆盖组合路由的单个字段，或把路由指向另一个 proxy，全部在下一次请求生效，无需重启。未挂载 settings 服务时，仅由 entry 配置驱动适配器，行为不变。
+
+凭据按每次 stream 调用解析：非空的字面 `apiKey` 优先，其次经可选的 `ctx.credentials` seam 解析 `apiKeyEnv`（活跃环境之下的 `$DSH_HOME/.env`；未挂载 seam 时恰好读取该环境变量）。只有完全没有点名任何凭据的 profile——仅限这一种情况——才交给 pi-ai 的环境发现。路由集合与每条路由捕获的重试策略是注册级事实：两者任一变化时，插件都会原子地替换自己的注册（同一适配器实例，候选集合先经校验），因此某条路由若已被另一适配器占有，先前的路由会继续服务，而改回可用配置时注册会重新生效。提供方键的顺序绝不算作变化。存活 settings 快照若点名未知提供方（或违反任何其他 resolver 约束），则保留最后可用 profile 并记录失败；entry 配置本身仍会使插件加载失败。
 
 适配器通过 `ctx.llm.listModels(provider)` 公开每个已配置提供方已安装的 pi-ai 模型。这是从 `getModels(provider)` 派生的提供方无关 selector 元数据；请求时解析仍会执行权威 catalog 查找，因此发现不会创建第二个模型注册表。`ctx.llm.resolveModelInfo(provider, model)` 会执行一次精确 descriptor 查找，并返回其身份、上下文窗口和可选思考级别，让权威元数据保留在拥有路由的适配器上，而非消费方。
 
 `reasoning.efforts` 列表是 pi-ai 有序的 `getSupportedThinkingLevels(model)` 结果，不经筛选或规范化，其中包括 `off`，以及模型对 `xhigh` 或 `max` 的特定支持。Harness 将每个规范 pi-ai 级别公开为不透明 ID；提供方／模型在协议格式中的表示仍保留在 pi-ai 的 `thinkingLevelMap` 中。因此，不具备推理（reasoning）能力的模型也会公开 pi-ai 的 `off` 选项。配置 profile 的 `reasoning` 值（包括 `off`）在存在时是部署默认值；省略它会保留提供方默认值。每次请求的 `GenerateOptions.reasoningEffort` 优先；任何未出现在确切模型能力中的显式值都会在网络 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败，而不会被自动调整。pi-ai 的通用流选项通过省略 `reasoning` 表示 `off`。
 
-受支持的 profile 字段是 `provider`、`apiKey`、`baseURL`、`headers`、`reasoning`、`thinkingBudgets`、`cacheRetention`、`transport`、`timeoutMs`、`websocketConnectTimeoutMs`、`streamIdleTimeoutMs` 和 `retryPolicy`。每个 profile 的可选重试策略都会与该提供方路由一同捕获；省略时使用有界的常规默认值。流空闲间隔必须是正的有限 Node 定时器延迟，默认为五分钟，且只覆盖未完成提供方读取，不包括消费方思考时间。若已配置标头中有同名项，则以 Harness 应用归因为准。
+受支持的 profile 字段是 `apiKey`、`apiKeyEnv`、`baseURL`、`headers`、`reasoning`、`thinkingBudgets`、`cacheRetention`、`transport`、`timeoutMs`、`websocketConnectTimeoutMs`、`streamIdleTimeoutMs` 和 `retryPolicy`。每个 profile 的可选重试策略都会与该提供方路由一同捕获；省略时使用有界的常规默认值。流空闲间隔必须是正的有限 Node 定时器延迟，默认为五分钟，且只覆盖未完成提供方读取，不包括消费方思考时间。若已配置标头中有同名项，则以 Harness 应用归因为准。
 
 适配器强制 pi-ai SDK `maxRetries` 为零，因此一次 `stream()` 调用只会发起一次提供方请求。已移除 profile 字段 `maxRetries` 和 `maxRetryDelayMs` 会使加载失败，而不是静默倍增或隐藏单独组合的 agent（智能体）级重试预算。空闲超时会 abort SDK 的稳定请求信号，并以 `TIMEOUT` 呈现；较早的调用方 abort 仍为 `ABORTED`。
 
@@ -71,7 +77,7 @@ pi-ai 会安装多个提供方 SDK，并延迟加载 catalog 模型所选的 SDK
 
 ## 测试
 
-单元测试使用重定向到本地 mock 服务器的 pi-ai catalog 模型，覆盖提供方／profile 路由、每次适配器调用只发起一个协议请求、idle-timeout 响应终止、调用方 abort、原生 API 选择、端点覆盖、归因、转换、回放状态验证，以及一个适配器实例内的跨提供方／模型回放。真实 API 覆盖仍需 key 才会启用，并通过 `pnpm run test:e2e` 运行。
+单元测试使用重定向到本地 mock 服务器的 pi-ai catalog 模型，覆盖提供方／profile 路由、每次适配器调用只发起一个协议请求、idle-timeout 响应终止、调用方 abort、原生 API 选择、端点覆盖、归因、转换、回放状态验证，以及一个适配器实例内的跨提供方／模型回放。`tests/dynamic-config.spec.ts` 驱动真实的 settings-local 与 credentials-local provider：settings 里新生的路由实时完成注册，并在用户层重置时随之移除，`apiKeyEnv` 凭据在两次请求之间轮换，点名未知提供方的快照则保留最后可用 profile。`tests/loader-composition.spec.ts` 从仅测试用的 `cordis.yml` 出发，经真实 Loader 拉起休眠姿态，并从磁盘上的一次 `settings.yaml` 编辑注册出它的路由。真实 API 覆盖仍需 key 才会启用，并通过 `pnpm run test:e2e` 运行。
 
 ## 模型体验
 
@@ -105,6 +111,8 @@ pi-ai 事件会变为 harness 推理、文本、工具调用、usage 与 finish
 
 ## 已知限制与暂缓事项
 
+- **settings 能新增或覆盖路由，但不能移除组合路由**：用户层合并在组合 `base` 之上，因此删除 `cordis.yml` 提供的提供方属于组合变更；对该 namespace 执行 `replace` 只会重置用户层。
+- **`headers` 可能承载一条脱敏器看不见的凭据**：profile 的 `headers` 是纯字符串字典，因此设在其中的 `Authorization` 或 `api-key` 会被脱敏后的 `describe()` 原样返回，并被任何配置 UI 渲染出来。请把凭据存为 `apiKeyEnv` 引用；把该字典整体改为只写与其余[协议边界工作](../llm/README.md#known-limitations-and-deferred-work)一并暂缓。
 - **必须属于 catalog**：已安装 pi-ai catalog 中不存在的自定义模型 id 会以 `UNKNOWN_MODEL` 失败，即使提供方 profile 配置了自定义端点。
 - **不支持 `GenerateOptions.stop`**：pi-ai 的通用流选项无法保证所有提供方都支持 stop sequence，因此适配器会拒绝该字段。
 - **历史中的 `system` 消息使用 pi-ai 通用上下文转换**：提供方特定位置由 pi-ai 决定，而非由 harness 拥有的协议覆盖决定。
diff --git a/packages/llm/llm-pi-ai/package.json b/packages/llm/llm-pi-ai/package.json
index e2b639624b..43b97a14f0 100644
--- a/packages/llm/llm-pi-ai/package.json
+++ b/packages/llm/llm-pi-ai/package.json
@@ -27,8 +27,10 @@
   ],
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-credentials": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-llm": "^0.0.1",
+    "@deepseek-ai/dsh-settings": "^0.0.1",
     "@deepseek-ai/dsh-timeout": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
@@ -37,9 +39,11 @@
     "schemastery": "^3.18.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-credentials": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
     "@deepseek-ai/dsh-llm-deepseek": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^",
     "@deepseek-ai/dsh-timeout": "workspace:^",
     "cordis": "^4.0.0-rc.7"
   }
diff --git a/packages/llm/llm-pi-ai/src/adapter.ts b/packages/llm/llm-pi-ai/src/adapter.ts
index 0cc6dda739..030592f74c 100644
--- a/packages/llm/llm-pi-ai/src/adapter.ts
+++ b/packages/llm/llm-pi-ai/src/adapter.ts
@@ -30,15 +30,22 @@ import type {
   StreamChunk,
 } from '@deepseek-ai/dsh-llm'
 import { idleWatchdog, timeoutOf } from '@deepseek-ai/dsh-timeout'
-import { resolveProfiles } from './config.ts'
-import type { PiAiProviderProfile, ResolvedPiAiProviderProfile } from './config.ts'
+import type { ResolvedPiAiProviderProfile } from './config.ts'
 import { toPiContext } from './context.ts'
 import { toStreamChunks } from './stream.ts'
 
-/** Constructor options for {@link PiAiAdapter}. */
+/** Constructor options for {@link PiAiAdapter}: the two resolution seams the plugin owns. */
 export interface PiAiAdapterOptions {
-  /** Validated provider profiles this adapter instance owns. */
-  profiles: readonly PiAiProviderProfile[]
+  /** Current validated profiles by provider route; called once per operation. */
+  profiles: () => ReadonlyMap<string, ResolvedPiAiProviderProfile>
+  /**
+   * Resolve the credential for one already-resolved profile; called once per
+   * stream call and frozen for that call. `undefined` defers to pi-ai's
+   * provider-native ambient discovery, which the plugin allows only for a
+   * profile naming no credential at all; a named reference that misses throws
+   * `LlmError` `MISSING_CREDENTIAL` rather than falling back.
+   */
+  resolveApiKey: (provider: string, profile: ResolvedPiAiProviderProfile) => Promise<string | undefined>
 }
 
 /**
@@ -46,7 +53,7 @@ export interface PiAiAdapterOptions {
  * override, preserving the catalog's API/capability/compatibility metadata.
  */
 function resolvePiModel(
-  profile: Omit<PiAiProviderProfile, 'retryPolicy'>,
+  profile: ResolvedPiAiProviderProfile,
   modelId: string,
 ): Model<Api> {
   const model = getBuiltinModels(profile.provider as BuiltinProvider).find(candidate => candidate.id === modelId) as Model<Api> | undefined
@@ -58,12 +65,13 @@ function resolvePiModel(
 
 /** Copy profile stream knobs into pi-ai's common option vocabulary. */
 function profileOptions(
-  profile: Omit<PiAiProviderProfile, 'retryPolicy'>,
+  profile: ResolvedPiAiProviderProfile,
   reasoning: ModelThinkingLevel | undefined,
+  apiKey: string | undefined,
 ): SimpleStreamOptions {
   const enabledReasoning: ThinkingLevel | undefined = reasoning === 'off' ? undefined : reasoning
   return {
-    ...profile.apiKey === undefined ? {} : { apiKey: profile.apiKey },
+    ...apiKey === undefined ? {} : { apiKey },
     ...enabledReasoning === undefined ? {} : { reasoning: enabledReasoning },
     ...profile.thinkingBudgets === undefined ? {} : { thinkingBudgets: profile.thinkingBudgets },
     ...profile.cacheRetention === undefined ? {} : { cacheRetention: profile.cacheRetention },
@@ -104,19 +112,16 @@ function requestHeaders(headers: Readonly<Record<string, string>> | undefined):
  * request, so models need not be registered during the Cordis lifecycle.
  */
 export class PiAiAdapter extends LlmAdapter {
-  private readonly profiles: ReadonlyMap<string, ResolvedPiAiProviderProfile>
-
-  constructor(options: PiAiAdapterOptions) {
+  constructor(private readonly config: PiAiAdapterOptions) {
     super()
-    this.profiles = new Map(resolveProfiles(options.profiles).map(profile => [profile.provider, profile]))
   }
 
   override providerRetryPolicy(provider: string): ResolvedRetryPolicy | undefined {
-    return this.profiles.get(provider)?.retryPolicy
+    return this.config.profiles().get(provider)?.retryPolicy
   }
 
   override listModels(provider: string): Promise<readonly LlmModelInfo[]> {
-    const profile = this.profiles.get(provider)
+    const profile = this.config.profiles().get(provider)
     if (profile === undefined) {
       return Promise.reject(new LlmError(`pi-ai adapter does not own provider "${provider}"`, 'NO_ADAPTER'))
     }
@@ -132,7 +137,7 @@ export class PiAiAdapter extends LlmAdapter {
     model: string,
     _signal?: AbortSignal,
   ): Promise<LlmResolvedModelInfo> {
-    const profile = this.profiles.get(provider)
+    const profile = this.config.profiles().get(provider)
     if (profile === undefined) {
       return Promise.reject(new LlmError(
         `pi-ai adapter does not own provider "${provider}"`,
@@ -165,7 +170,10 @@ export class PiAiAdapter extends LlmAdapter {
     if (options.stop !== undefined) {
       throw new LlmError('llm-pi-ai does not support GenerateOptions.stop', 'UNSUPPORTED_OPTION')
     }
-    const profile = this.profiles.get(options.provider)
+    // One resolution per stream call: the profile snapshot and the credential
+    // freeze here and hold for this whole request, so an in-flight stream
+    // never observes a configuration change and the next call re-resolves.
+    const profile = this.config.profiles().get(options.provider)
     if (profile === undefined) {
       throw new LlmError(`pi-ai adapter does not own provider "${options.provider}"`, 'NO_ADAPTER')
     }
@@ -174,6 +182,7 @@ export class PiAiAdapter extends LlmAdapter {
       model,
       options.reasoningEffort ?? profile.reasoning,
     )
+    const apiKey = await this.config.resolveApiKey(options.provider, profile)
 
     const consumer = new AbortController()
     const upstream = options.signal === undefined
@@ -184,7 +193,7 @@ export class PiAiAdapter extends LlmAdapter {
 
     try {
       const events = streamSimple(model, toPiContext(options), {
-        ...profileOptions(profile, reasoning),
+        ...profileOptions(profile, reasoning, apiKey),
         ...options.temperature === undefined ? {} : { temperature: options.temperature },
         ...options.maxTokens === undefined ? {} : { maxTokens: options.maxTokens },
         ...options.sessionId === undefined ? {} : { sessionId: String(options.sessionId) },
diff --git a/packages/llm/llm-pi-ai/src/config.ts b/packages/llm/llm-pi-ai/src/config.ts
index 8c7da2badd..c635b1f13e 100644
--- a/packages/llm/llm-pi-ai/src/config.ts
+++ b/packages/llm/llm-pi-ai/src/config.ts
@@ -1,5 +1,7 @@
 /**
  * Configuration schema and provider-profile validation for the pi-ai adapter.
+ * Profiles are a dict keyed by provider route, so the composition base and a
+ * user-settings layer merge per provider and the route set is structural.
  *
  * @module dsh-llm-pi-ai/config
  */
@@ -7,6 +9,8 @@
 import { getBuiltinProviders } from '@earendil-works/pi-ai/providers/all'
 import type { CacheRetention, ModelThinkingLevel, ThinkingBudgets, Transport } from '@earendil-works/pi-ai'
 import z from 'schemastery'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import type { CredentialRef } from '@deepseek-ai/dsh-credentials'
 import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
 import { resolveRetryPolicy, RetryPolicySchema } from '@deepseek-ai/dsh-llm'
 import type { ResolvedRetryPolicy, RetryPolicyConfig } from '@deepseek-ai/dsh-llm'
@@ -14,12 +18,12 @@ import type { ResolvedRetryPolicy, RetryPolicyConfig } from '@deepseek-ai/dsh-ll
 /** Default maximum idle interval while an adapter stream read is outstanding. */
 export const DEFAULT_STREAM_IDLE_TIMEOUT_MS = 300_000
 
-/** Configuration for one pi-ai provider route. */
+/** Configuration for one pi-ai provider route; the `providers` dict key IS the route. */
 export interface PiAiProviderProfile {
-  /** pi-ai provider catalog name and Harness route key. */
-  provider: string
-  /** Provider credential; when absent pi-ai uses its provider-native ambient discovery. */
+  /** Literal provider credential; prefer {@link apiKeyEnv}. With both absent pi-ai uses its provider-native ambient discovery. */
   apiKey?: string
+  /** Credential reference (environment-variable name) resolved per request through `ctx.credentials`. */
+  apiKeyEnv?: string
   /** Override the selected catalog model's endpoint without changing its protocol metadata. */
   baseURL?: string
   /** Provider request headers; Harness attribution wins reserved names. */
@@ -42,18 +46,26 @@ export interface PiAiProviderProfile {
   retryPolicy?: RetryPolicyConfig
 }
 
-/** Validated profile with every adapter-owned default resolved. */
-export interface ResolvedPiAiProviderProfile extends Omit<PiAiProviderProfile, 'retryPolicy'> {
+/** Validated profile with its route stamped and every adapter-owned default resolved. */
+export interface ResolvedPiAiProviderProfile extends Omit<PiAiProviderProfile, 'apiKeyEnv' | 'retryPolicy'> {
+  /** pi-ai provider catalog name and Harness route key (the configuration dict key). */
+  provider: string
+  /** Validated credential reference, when one is configured. */
+  apiKeyEnv?: CredentialRef
   /** Positive finite provider-idle interval after defaulting. */
   streamIdleTimeoutMs: number
   /** Immutable retry policy captured with this provider route. */
   retryPolicy: ResolvedRetryPolicy
 }
 
-/** Plugin configuration: the non-empty provider profiles this instance owns. */
+/** Plugin configuration: the provider routes this instance owns. */
 export interface Config {
-  /** Non-empty set of pi-ai provider routes this adapter instance owns. */
-  providers: PiAiProviderProfile[]
+  /**
+   * pi-ai provider routes, keyed by provider. An empty (or omitted) dict is
+   * the dormant settings-driven posture: the adapter mounts with no routes
+   * and registers them the moment a settings section supplies profiles.
+   */
+  providers?: Record<string, PiAiProviderProfile>
 }
 
 const thinkingBudgets = z.object({
@@ -64,8 +76,8 @@ const thinkingBudgets = z.object({
 })
 
 const profile = z.object({
-  provider: z.string().required(),
-  apiKey: z.string(),
+  apiKey: z.string().role('secret'),
+  apiKeyEnv: z.string().role('credential-ref'),
   baseURL: z.string(),
   headers: z.dict(z.string()),
   reasoning: z.union(['off', 'minimal', 'low', 'medium', 'high', 'xhigh', 'max']),
@@ -80,54 +92,64 @@ const profile = z.object({
 
 /** Runtime schema for {@link Config}. */
 export const Config: z<Config> = z.object({
-  providers: z.array(profile).required(),
+  providers: z.dict(profile).default({}),
 })
 
 /**
  * Validate profiles against the installed pi-ai catalog and return a detached
- * shallow copy suitable for adapter construction.
- * @param profiles - configured provider profiles.
+ * route-keyed map suitable for per-request reads. This is the one explicit
+ * resolve step, so an omitted dict resolves to the empty (dormant) route set
+ * here rather than through a hidden fallback.
+ * @param providers - configured provider profiles keyed by route.
  * @returns validated profiles in configuration order.
  */
-export function resolveProfiles(profiles: readonly PiAiProviderProfile[]): ResolvedPiAiProviderProfile[] {
-  if (profiles.length === 0) throw new Error('llm-pi-ai: providers must contain at least one profile')
+export function resolveProfiles(
+  providers: Readonly<Record<string, PiAiProviderProfile>> | undefined,
+): Map<string, ResolvedPiAiProviderProfile> {
+  if (Array.isArray(providers)) {
+    throw new Error('llm-pi-ai: providers is now a dict keyed by provider route, not an array of profiles')
+  }
+  const entries = Object.entries(providers ?? {})
   const supported = new Set<string>(getBuiltinProviders())
-  const seen = new Set<string>()
-  return profiles.map((source) => {
+  const resolved = new Map<string, ResolvedPiAiProviderProfile>()
+  for (const [provider, source] of entries) {
     const legacy = source as PiAiProviderProfile & {
+      provider?: unknown
       maxRetries?: unknown
       maxRetryDelayMs?: unknown
     }
+    if ('provider' in legacy) {
+      throw new Error('llm-pi-ai: the profile "provider" field moved to the providers dict key')
+    }
     if ('maxRetries' in legacy || 'maxRetryDelayMs' in legacy) {
       throw new Error('llm-pi-ai: maxRetries and maxRetryDelayMs were removed; compose agent recovery with dsh-llm-retry')
     }
-    if (source.provider.length === 0) throw new Error('llm-pi-ai: provider names must be non-empty')
-    if (!supported.has(source.provider)) throw new Error(`llm-pi-ai: unknown pi-ai provider "${source.provider}"`)
-    if (seen.has(source.provider)) throw new Error(`llm-pi-ai: duplicate provider profile "${source.provider}"`)
+    if (provider.length === 0) throw new Error('llm-pi-ai: provider names must be non-empty')
+    if (!supported.has(provider)) throw new Error(`llm-pi-ai: unknown pi-ai provider "${provider}"`)
     if (source.apiKey !== undefined && source.apiKey.trim().length === 0) {
-      throw new Error(`llm-pi-ai: provider "${source.provider}" has an empty apiKey; omit it to use ambient authentication`)
+      throw new Error(`llm-pi-ai: provider "${provider}" has an empty apiKey; omit it to use ambient authentication`)
     }
     if (source.baseURL !== undefined && source.baseURL.length === 0) {
-      throw new Error(`llm-pi-ai: provider "${source.provider}" has an empty baseURL`)
+      throw new Error(`llm-pi-ai: provider "${provider}" has an empty baseURL`)
     }
     const streamIdleTimeoutMs = source.streamIdleTimeoutMs ?? DEFAULT_STREAM_IDLE_TIMEOUT_MS
     if (!Number.isFinite(streamIdleTimeoutMs)
       || streamIdleTimeoutMs <= 0
       || streamIdleTimeoutMs > MAX_TIMER_DELAY_MS) {
       throw new Error(
-        `llm-pi-ai: provider "${source.provider}" streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
+        `llm-pi-ai: provider "${provider}" streamIdleTimeoutMs must be a positive finite number no greater than ${MAX_TIMER_DELAY_MS}`,
       )
     }
-    seen.add(source.provider)
-    return {
-      ...source,
+    const { apiKeyEnv, retryPolicy, ...rest } = source
+    resolved.set(provider, {
+      ...rest,
+      provider,
+      ...apiKeyEnv === undefined ? {} : { apiKeyEnv: credentialRef(apiKeyEnv) },
       streamIdleTimeoutMs,
-      retryPolicy: resolveRetryPolicy(
-        source.retryPolicy,
-        `llm-pi-ai: provider "${source.provider}" retryPolicy`,
-      ),
-      ...source.headers === undefined ? {} : { headers: { ...source.headers } },
-      ...source.thinkingBudgets === undefined ? {} : { thinkingBudgets: { ...source.thinkingBudgets } },
-    }
-  })
+      retryPolicy: resolveRetryPolicy(retryPolicy, `llm-pi-ai: provider "${provider}" retryPolicy`),
+      ...rest.headers === undefined ? {} : { headers: { ...rest.headers } },
+      ...rest.thinkingBudgets === undefined ? {} : { thinkingBudgets: { ...rest.thinkingBudgets } },
+    })
+  }
+  return resolved
 }
diff --git a/packages/llm/llm-pi-ai/src/index.ts b/packages/llm/llm-pi-ai/src/index.ts
index da104cb22d..91cb32a181 100644
--- a/packages/llm/llm-pi-ai/src/index.ts
+++ b/packages/llm/llm-pi-ai/src/index.ts
@@ -1,22 +1,27 @@
 /**
- * Generic pi-ai-backed LLM adapter plugin. One plugin instance registers an
- * explicit set of provider profiles; requests select a profile by provider and
- * resolve the model dynamically from pi-ai's installed catalog.
+ * Generic pi-ai-backed LLM adapter plugin. One plugin instance owns a dict of
+ * provider routes; requests select a profile by provider and resolve the
+ * model dynamically from pi-ai's installed catalog. Profile facts resolve per
+ * request over the optional `llm-pi-ai` user-settings section and the
+ * optional credential seam, so a changed key, endpoint, or knob reaches the
+ * next request without a restart; a changed *route set* (or a route's
+ * registration-captured retry policy) re-registers the same adapter instance
+ * in place.
  *
  * ```yaml
  * - id: llm
  *   name: '@deepseek-ai/dsh-llm-pi-ai'
  *   config:
  *     providers:
- *       - provider: openai
- *         apiKey: !!js process.env.OPENAI_API_KEY
+ *       openai:
+ *         apiKeyEnv: OPENAI_API_KEY
  *         retryPolicy:
  *           mode: normal
  *           maxRetries: 2
- *       - provider: anthropic
- *         apiKey: !!js process.env.ANTHROPIC_API_KEY
- *       - provider: openrouter
- *         apiKey: !!js process.env.OPENROUTER_API_KEY
+ *       anthropic:
+ *         apiKeyEnv: ANTHROPIC_API_KEY
+ *       openrouter:
+ *         apiKeyEnv: OPENROUTER_API_KEY
  *         baseURL: https://proxy.example.com/v1
  * ```
  *
@@ -24,21 +29,133 @@
  */
 
 import type { Context } from 'cordis'
-import type {} from '@deepseek-ai/dsh-llm'
+import { getBuiltinProviders } from '@earendil-works/pi-ai/providers/all'
+import { LlmError } from '@deepseek-ai/dsh-llm'
+import type { AdapterRegistrationHandle } from '@deepseek-ai/dsh-llm'
+import { deepEqualJson, installSettingsSection, settingsNamespace } from '@deepseek-ai/dsh-settings'
 import { PiAiAdapter } from './adapter.ts'
 import { Config, resolveProfiles } from './config.ts'
+import type { ResolvedPiAiProviderProfile } from './config.ts'
 
 export { PiAiAdapter } from './adapter.ts'
 export type { PiAiAdapterOptions } from './adapter.ts'
 export { Config } from './config.ts'
-export type { PiAiProviderProfile } from './config.ts'
+export type { PiAiProviderProfile, ResolvedPiAiProviderProfile } from './config.ts'
 
 export const name = 'llm-pi-ai'
 export const inject = ['llm']
 
+const NS = settingsNamespace('llm-pi-ai')
+
+/**
+ * The registry captures these per route; a change here must re-register.
+ * Sorted by provider so a settings document that merely reorders its keys is
+ * not mistaken for a route change.
+ */
+function registrationFacts(profiles: ReadonlyMap<string, ResolvedPiAiProviderProfile>): unknown {
+  return [...profiles.entries()]
+    .map(([provider, profile]) => ({ provider, retryPolicy: profile.retryPolicy }))
+    .sort((left, right) => left.provider.localeCompare(right.provider))
+}
+
 /** Register one generic pi-ai adapter for all configured provider routes. */
 export function apply(ctx: Context, config: Config): void {
-  const profiles = resolveProfiles(config.providers)
-  const adapter = new PiAiAdapter({ profiles: config.providers })
-  ctx.llm.registerAdapter(profiles.map(entry => entry.provider), adapter)
+  let current: () => Config = () => config
+  let lastRaw: Config | undefined
+  let lastGood: ReadonlyMap<string, ResolvedPiAiProviderProfile> | undefined
+  const profiles = (): ReadonlyMap<string, ResolvedPiAiProviderProfile> => {
+    const raw = current()
+    if (raw === lastRaw && lastGood !== undefined) return lastGood
+    try {
+      const next = resolveProfiles(raw.providers)
+      lastRaw = raw
+      lastGood = next
+      return next
+    } catch (error) {
+      // Static composition resolves before anything registers, so this branch
+      // only sees a live settings snapshot failing catalog or bound checks:
+      // keep serving the last good profiles and say so once per bad snapshot.
+      if (lastGood === undefined) throw error
+      lastRaw = raw
+      ctx.logger.error('llm-pi-ai: keeping the last good profiles after an invalid settings section')
+      ctx.logger.error(error)
+      return lastGood
+    }
+  }
+  profiles()
+
+  const resolveApiKey = async (
+    provider: string,
+    profile: ResolvedPiAiProviderProfile,
+  ): Promise<string | undefined> => {
+    if (profile.apiKey !== undefined) return profile.apiKey
+    const ref = profile.apiKeyEnv
+    // Only a profile that names no credential at all defers to pi-ai's
+    // provider-native discovery. Once one is named, a miss must fail loud:
+    // handing pi-ai `undefined` would let it pick up an unrelated ambient key
+    // (OPENAI_API_KEY and friends), billing another tenant for a request the
+    // deployment meant to authenticate differently.
+    if (ref === undefined) return undefined
+    const credentials = ctx.get('credentials')
+    const hit = credentials !== undefined
+      ? (await credentials.resolve(ref))?.value
+      // Without the seam, read exactly the named variable so a plain
+      // cordis.yml composition works from the environment alone.
+      : process.env[ref]
+    if (hit !== undefined && hit.length > 0) return hit
+    throw new LlmError(
+      `llm-pi-ai: no credential for provider route "${provider}"; its profile resolves ${ref}, which is not`
+      + ` set — store ${ref} through the credentials service (the web Models page writes it) or export it,`
+      + ' and remove apiKeyEnv only if this provider should authenticate from pi-ai\'s own environment discovery',
+      'MISSING_CREDENTIAL',
+    )
+  }
+
+  const adapter = new PiAiAdapter({ profiles, resolveApiKey })
+  // The full installed catalog is configurable from the moment the plugin
+  // mounts — dormant or not — so configuration surfaces can offer every
+  // pi-ai provider before any route exists.
+  ctx.llm.registerConfigurableProviders(getBuiltinProviders().map(provider => ({
+    provider,
+    displayName: provider,
+    settingsNs: NS,
+    settingsPath: ['providers', provider],
+  })))
+  // Route effects bind to this apply fiber via the stable `ctx` reference,
+  // even when a swap runs inside the scoped settings callback below. A bare
+  // mount (zero routes) is the dormant posture: nothing registers until a
+  // settings section supplies profiles, and routes drop when it empties.
+  let registration: AdapterRegistrationHandle | undefined
+  let registeredFacts: unknown
+  const ensureRegistrationFacts = (): void => {
+    const facts = registrationFacts(profiles())
+    if (deepEqualJson(facts, registeredFacts)) return
+    // The registry captures the route set and each route's retry policy at
+    // registration, so a change to either must re-register. The swap is
+    // atomic (same adapter instance, validated before anything moves): a
+    // conflicting route leaves the previous routes serving requests, and
+    // `registeredFacts` only advances once the registry actually holds the
+    // new set — so returning to a working configuration always re-applies.
+    const routes = [...profiles().keys()]
+    if (registration === undefined) {
+      // Dormant bare mount: nothing is registered until a section supplies
+      // profiles, and an empty section keeps it that way.
+      if (routes.length === 0) {
+        registeredFacts = facts
+        return
+      }
+      registration = ctx.llm.registerAdapter(routes, adapter)
+    } else {
+      registration.replace(routes)
+    }
+    registeredFacts = facts
+  }
+  ensureRegistrationFacts()
+
+  installSettingsSection(ctx, NS, Config, config, {
+    setSource: (source) => {
+      current = source
+    },
+    onChange: ensureRegistrationFacts,
+  })
 }
diff --git a/packages/llm/llm-pi-ai/tests/adapter.e2e.ts b/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
index 352f2067d8..4637a75298 100644
--- a/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
+++ b/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
@@ -23,12 +23,13 @@ async function harness(_model: string, config: Partial<PiAiProviderProfile> = {}
   contexts.push(ctx)
   await ctx.plugin(LlmService)
   await ctx.plugin(LlmPiAi, {
-    providers: [{
-      provider: 'deepseek',
-      ...process.env.DEEPSEEK_API_KEY === undefined ? {} : { apiKey: process.env.DEEPSEEK_API_KEY },
-      ...process.env.DEEPSEEK_BASE_URL === undefined ? {} : { baseURL: process.env.DEEPSEEK_BASE_URL },
-      ...config,
-    }],
+    providers: {
+      deepseek: {
+        ...process.env.DEEPSEEK_API_KEY === undefined ? {} : { apiKey: process.env.DEEPSEEK_API_KEY },
+        ...process.env.DEEPSEEK_BASE_URL === undefined ? {} : { baseURL: process.env.DEEPSEEK_BASE_URL },
+        ...config,
+      },
+    },
   })
   return ctx
 }
@@ -154,7 +155,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('llm-pi-ai e2e (real API)', () =>
 
     const prompt = ask('Reply with exactly the word: pong')
     const [fromDeepSeek, fromPiAi] = await Promise.all([
-      assemble(deepseekCtx, { model: FLASH, messages: prompt, maxTokens: 50 }),
+      assemble(deepseekCtx, { provider: 'deepseek-official', model: FLASH, messages: prompt, maxTokens: 50 }),
       assemble(piCtx, { model: FLASH, messages: prompt, maxTokens: 50 }),
     ])
     expect(blockKinds(fromPiAi)).toEqual(blockKinds(fromDeepSeek))
diff --git a/packages/llm/llm-pi-ai/tests/adapter.spec.ts b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
index cb70b6d3b8..a0826b3571 100644
--- a/packages/llm/llm-pi-ai/tests/adapter.spec.ts
+++ b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
@@ -1,5 +1,3 @@
-import { createServer } from 'node:http'
-import type { IncomingMessage, Server, ServerResponse } from 'node:http'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import LlmService, { createUserMessage, CONTEXT_WINDOW_EXCEEDED_CODE, LlmError, ReasoningEffortId, userAgent  } from '@deepseek-ai/dsh-llm'
@@ -9,94 +7,30 @@ import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
 import { getBuiltinModels } from '@earendil-works/pi-ai/providers/all'
 import { resolveProfiles } from '../src/config.ts'
 import { assemble } from './assemble.ts'
-
-interface MockServer {
-  url: string
-  paths: string[]
-  requests: unknown[]
-  headers: IncomingMessage['headers'][]
-  readonly closedResponses: number
-  responseClosed: Promise<void>
-}
-
-const servers: Server[] = []
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
 
 afterEach(async () => {
   vi.unstubAllEnvs()
-  await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
+  await closeMockServers()
 })
 
-async function mockServer(script: {
-  status?: number
-  events?: string[]
-  body?: string
-  delayMs?: number
-  headers?: Record<string, string>
-}[]): Promise<MockServer> {
-  const paths: string[] = []
-  const requests: unknown[] = []
-  const headers: IncomingMessage['headers'][] = []
-  let closedResponses = 0
-  const responseClosed = Promise.withResolvers<undefined>()
-  const server = createServer((request: IncomingMessage, response: ServerResponse) => {
-    response.on('close', () => {
-      closedResponses += 1
-      responseClosed.resolve(undefined)
-    })
-    let body = ''
-    request.on('data', (chunk: Buffer) => { body += chunk.toString('utf8') })
-    request.on('end', () => {
-      paths.push(request.url ?? '')
-      requests.push(body.length === 0 ? undefined : JSON.parse(body))
-      headers.push(request.headers)
-      const behavior = script.shift() ?? { status: 500, body: 'script exhausted' }
-      if (behavior.status !== undefined && behavior.status !== 200) {
-        response.writeHead(behavior.status, { 'content-type': 'application/json', ...behavior.headers })
-        response.end(behavior.body ?? '{}')
-        return
-      }
-      response.writeHead(200, { 'content-type': 'text/event-stream' })
-      let index = 0
-      const writeNext = (): void => {
-        const event = behavior.events?.[index++]
-        if (event === undefined) { response.end(); return }
-        response.write(`data: ${event}\n\n`)
-        if (behavior.delayMs === undefined) writeNext()
-        else setTimeout(writeNext, behavior.delayMs)
-      }
-      writeNext()
-    })
-  })
-  servers.push(server)
-  await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
-  const address = server.address()
-  if (address === null || typeof address === 'string') throw new Error('no port')
-  return {
-    url: `http://127.0.0.1:${address.port}`,
-    paths,
-    requests,
-    headers,
-    responseClosed: responseClosed.promise,
-    get closedResponses() { return closedResponses },
-  }
-}
-
-const textEvents = [
-  '{"choices":[{"delta":{"role":"assistant","content":""},"index":0,"finish_reason":null}]}',
-  '{"choices":[{"delta":{"content":"hello"},"index":0,"finish_reason":null}]}',
-  '{"choices":[{"delta":{},"index":0,"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
-  '[DONE]',
-]
-
 async function harness(baseURL: string, overrides: Record<string, unknown> = {}): Promise<Context> {
   const ctx = new Context()
   await ctx.plugin(LlmService)
   await ctx.plugin(LlmPiAi, {
-    providers: [{ provider: 'deepseek', apiKey: 'test-key', baseURL, ...overrides }],
+    providers: { deepseek: { apiKey: 'test-key', baseURL, ...overrides } },
   })
   return ctx
 }
 
+/** Direct adapter over the real profile resolver, with literal-key resolution. */
+function adapterOf(providers: Record<string, LlmPiAi.PiAiProviderProfile>): PiAiAdapter {
+  return new PiAiAdapter({
+    profiles: () => resolveProfiles(providers),
+    resolveApiKey: (_provider, profile) => Promise.resolve(profile.apiKey),
+  })
+}
+
 describe('PiAiAdapter provider routing', () => {
   it('resolves a catalog model dynamically and uses a private endpoint', async () => {
     const server = await mockServer([{ events: textEvents }])
@@ -182,8 +116,8 @@ describe('PiAiAdapter provider routing', () => {
     const server = await mockServer([{ events: textEvents }])
     const ctx = new Context()
     await ctx.plugin(LlmService)
-    ctx.llm.registerAdapter(['deepseek'], new PiAiAdapter({
-      profiles: [{ provider: 'deepseek', apiKey: 'test-key', baseURL: server.url }],
+    ctx.llm.registerAdapter(['deepseek'], adapterOf({
+      deepseek: { apiKey: 'test-key', baseURL: server.url },
     }))
 
     const result = await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
@@ -212,7 +146,7 @@ describe('PiAiAdapter provider routing', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmPiAi, {
-      providers: [{ provider: 'openai', apiKey: 'test-key', baseURL: `${server.url}/v1` }],
+      providers: { openai: { apiKey: 'test-key', baseURL: `${server.url}/v1` } },
     })
     const result = await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
     expect(result.finish.kind).toBe('error')
@@ -232,7 +166,7 @@ describe('PiAiAdapter provider routing', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmPiAi, {
-      providers: [{ provider: 'openai', apiKey: 'test-key', baseURL: `${server.url}/v1` }],
+      providers: { openai: { apiKey: 'test-key', baseURL: `${server.url}/v1` } },
     })
 
     const result = await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
@@ -246,12 +180,13 @@ describe('PiAiAdapter provider routing', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmPiAi, {
-      providers: [{
-        provider: 'openai',
-        apiKey: 'test-key',
-        baseURL: `${server.url}/api/projects/openai/openai/v1`,
-        headers: { 'api-key': 'test-key', Authorization: '' },
-      }],
+      providers: {
+        openai: {
+          apiKey: 'test-key',
+          baseURL: `${server.url}/api/projects/openai/openai/v1`,
+          headers: { 'api-key': 'test-key', Authorization: '' },
+        },
+      },
     })
     const result = await assemble(ctx, { provider: 'openai', model: 'gpt-5.5', messages: [] })
     expect(result.finish.kind).toBe('error')
@@ -333,16 +268,15 @@ describe('provider profile lifecycle', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     const fiber = await ctx.plugin(LlmPiAi, {
-      providers: [
-        {
-          provider: 'openai',
+      providers: {
+        openai: {
           retryPolicy: {
             mode: 'always',
             backoff: { initialDelayMs: 25, maxDelayMs: 100, jitterRatio: 0.2 },
           },
         },
-        { provider: 'anthropic' },
-      ],
+        anthropic: {},
+      },
     })
     expect(ctx.llm.listProviders()).toEqual([
       { id: 'openai', name: 'openai' },
@@ -365,7 +299,7 @@ describe('provider profile lifecycle', () => {
   it('exposes the installed pi-ai model catalog through provider-neutral metadata', async () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
-    await ctx.plugin(LlmPiAi, { providers: [{ provider: 'openai' }] })
+    await ctx.plugin(LlmPiAi, { providers: { openai: {} } })
     const models = await ctx.llm.listModels('openai')
     expect(models.find(model => model.id === 'gpt-4.1')).toEqual({
       provider: 'openai', id: 'gpt-4.1', name: 'GPT-4.1',
@@ -379,7 +313,7 @@ describe('provider profile lifecycle', () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await ctx.plugin(LlmPiAi, {
-      providers: [{ provider: 'deepseek' }, { provider: 'openai' }],
+      providers: { deepseek: {}, openai: {} },
     })
 
     await expect(ctx.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
@@ -413,7 +347,7 @@ describe('provider profile lifecycle', () => {
     const supported = new Context()
     await supported.plugin(LlmService)
     await supported.plugin(LlmPiAi, {
-      providers: [{ provider: 'deepseek', reasoning: 'max' }],
+      providers: { deepseek: { reasoning: 'max' } },
     })
     await expect(supported.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
       .resolves.toMatchObject({ reasoning: { defaultEffort: ReasoningEffortId('max') } })
@@ -421,7 +355,7 @@ describe('provider profile lifecycle', () => {
     const unsupported = new Context()
     await unsupported.plugin(LlmService)
     await unsupported.plugin(LlmPiAi, {
-      providers: [{ provider: 'deepseek', reasoning: 'medium' }],
+      providers: { deepseek: { reasoning: 'medium' } },
     })
     await expect(unsupported.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
       .rejects.toMatchObject({ code: 'UNSUPPORTED_REASONING_EFFORT' })
@@ -429,7 +363,7 @@ describe('provider profile lifecycle', () => {
     const disabled = new Context()
     await disabled.plugin(LlmService)
     await disabled.plugin(LlmPiAi, {
-      providers: [{ provider: 'deepseek', reasoning: 'off' }],
+      providers: { deepseek: { reasoning: 'off' } },
     })
     await expect(disabled.llm.resolveModelInfo('deepseek', 'deepseek-v4-flash'))
       .resolves.toMatchObject({ reasoning: { defaultEffort: ReasoningEffortId('off') } })
@@ -443,24 +377,53 @@ describe('provider profile lifecycle', () => {
     expect(server.headers[0]?.authorization).toBe('Bearer ambient-key')
   })
 
-  it('validates empty, duplicate, unknown, and explicitly blank profiles', () => {
-    expect(() => resolveProfiles([])).toThrow(/at least one/)
-    expect(() => resolveProfiles([{ provider: '' }])).toThrow(/non-empty/)
-    expect(() => resolveProfiles([{ provider: 'not-real' }])).toThrow(/unknown/)
-    expect(() => resolveProfiles([{ provider: 'openai' }, { provider: 'openai' }])).toThrow(/duplicate/)
-    expect(() => resolveProfiles([{ provider: 'openai', apiKey: '' }])).toThrow(/empty apiKey/)
-    expect(() => resolveProfiles([{ provider: 'openai', apiKey: '  ' }])).toThrow(/empty apiKey/)
-    expect(() => resolveProfiles([{ provider: 'openai', baseURL: '' }])).toThrow(/empty baseURL/)
+  it('falls back to the ambient environment for apiKeyEnv without the credentials seam', async () => {
+    vi.stubEnv('PI_CUSTOM_REF_KEY', 'custom-ref-key')
+    const server = await mockServer([{ events: textEvents }])
+    const ctx = await harness(server.url, { apiKey: undefined, apiKeyEnv: 'PI_CUSTOM_REF_KEY' })
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [] })
+    expect(server.headers[0]?.authorization).toBe('Bearer custom-ref-key')
+  })
+
+  it('fails a named-but-missing apiKeyEnv instead of using another ambient key', async () => {
+    // The exact confusion this guards: the named reference is empty while an
+    // unrelated provider key sits in the environment. Deferring to pi-ai's own
+    // discovery here would authenticate as another tenant.
+    vi.stubEnv('PI_CUSTOM_REF_KEY', '')
+    vi.stubEnv('DEEPSEEK_API_KEY', 'ambient-key')
+    const server = await mockServer([{ events: textEvents }])
+    const ctx = await harness(server.url, { apiKey: undefined, apiKeyEnv: 'PI_CUSTOM_REF_KEY' })
+    await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toMatchObject({ code: 'MISSING_CREDENTIAL' })
+    await expect(assemble(ctx, { model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toThrow(/provider route "deepseek".*PI_CUSTOM_REF_KEY/s)
+    expect(server.requests).toHaveLength(0)
+  })
+
+  it('validates empty, unknown, legacy-shaped, and explicitly blank profiles', () => {
+    // Empty and omitted dicts are the dormant zero-route posture, not errors.
+    expect(resolveProfiles({}).size).toBe(0)
+    expect(resolveProfiles(undefined).size).toBe(0)
+    expect(() => resolveProfiles({ '': {} })).toThrow(/non-empty/)
+    expect(() => resolveProfiles({ 'not-real': {} })).toThrow(/unknown/)
+    // The pre-release array shape and its per-profile provider field fail
+    // loud with migration directions instead of half-working.
+    expect(() => resolveProfiles([{ provider: 'openai' }] as never)).toThrow(/dict keyed by provider/)
+    expect(() => resolveProfiles({ openai: { provider: 'openai' } as never })).toThrow(/moved to the providers dict key/)
+    expect(() => resolveProfiles({ openai: { apiKey: '' } })).toThrow(/empty apiKey/)
+    expect(() => resolveProfiles({ openai: { apiKey: '  ' } })).toThrow(/empty apiKey/)
+    expect(() => resolveProfiles({ openai: { baseURL: '' } })).toThrow(/empty baseURL/)
+    expect(() => resolveProfiles({ openai: { apiKeyEnv: 'not-a-var!' } })).toThrow(/must match/)
   })
 
   it.each(['maxRetries', 'maxRetryDelayMs'] as const)(
     'rejects removed profile field %s instead of silently restoring hidden SDK retries',
     async (field) => {
-      const legacy = { provider: 'openai', [field]: 2 }
-      expect(() => resolveProfiles([legacy as never])).toThrow(/removed.*agent recovery/i)
+      const legacy = { [field]: 2 }
+      expect(() => resolveProfiles({ openai: legacy })).toThrow(/removed.*agent recovery/i)
       const ctx = new Context()
       await ctx.plugin(LlmService)
-      await expect(ctx.plugin(LlmPiAi, { providers: [legacy as never] }))
+      await expect(ctx.plugin(LlmPiAi, { providers: { openai: legacy } }))
         .rejects.toThrow(/removed.*agent recovery/i)
     },
   )
@@ -476,30 +439,26 @@ describe('provider profile lifecycle', () => {
     for (const entry of invalid) {
       const ctx = new Context()
       await ctx.plugin(LlmService)
-      await expect(ctx.plugin(LlmPiAi, { providers: [{ provider: 'openai', ...entry }] }))
+      await expect(ctx.plugin(LlmPiAi, { providers: { openai: { ...entry } } }))
         .rejects.toThrow()
     }
   })
 
   it('rejects invalid nested retryPolicy at the provider-profile boundary', async () => {
-    expect(() => resolveProfiles([{
-      provider: 'openai',
-      retryPolicy: { mode: 'always', backoff: { jitterRatio: -1 } },
-    }])).toThrow(/retryPolicy\.backoff\.jitterRatio/)
+    expect(() => resolveProfiles({
+      openai: { retryPolicy: { mode: 'always', backoff: { jitterRatio: -1 } } },
+    })).toThrow(/retryPolicy\.backoff\.jitterRatio/)
 
     const ctx = new Context()
     await ctx.plugin(LlmService)
     await expect(ctx.plugin(LlmPiAi, {
-      providers: [{
-        provider: 'openai',
-        retryPolicy: { mode: 'normal', maxRetries: -1 },
-      }],
+      providers: { openai: { retryPolicy: { mode: 'normal', maxRetries: -1 } } },
     })).rejects.toThrow(/retryPolicy/)
     expect(ctx.llm.listProviders()).toEqual([])
   })
 
   it('constructs the adapter directly and rejects routes it does not own', async () => {
-    const adapter = new PiAiAdapter({ profiles: [{ provider: 'openai' }] })
+    const adapter = adapterOf({ openai: {} })
     await expect(adapter.listModels('anthropic')).rejects.toMatchObject({ code: 'NO_ADAPTER' })
     await expect(adapter.resolveModel('anthropic', 'claude-sonnet-4'))
       .rejects.toMatchObject({ code: 'NO_ADAPTER' })
@@ -511,12 +470,12 @@ describe('provider profile lifecycle', () => {
     expect(new LlmError('x', 'X')).toBeInstanceOf(Error)
   })
 
-  it('validates direct-constructor profiles at the embedding boundary', () => {
-    expect(() => new PiAiAdapter({
-      profiles: [{ provider: 'openai', streamIdleTimeoutMs: 0 }],
+  it('validates profiles at the shared resolver boundary', () => {
+    expect(() => resolveProfiles({
+      openai: { streamIdleTimeoutMs: 0 },
     })).toThrow(/streamIdleTimeoutMs.*positive finite/)
-    expect(() => new PiAiAdapter({
-      profiles: [{ provider: 'openai', streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1 }],
+    expect(() => resolveProfiles({
+      openai: { streamIdleTimeoutMs: MAX_TIMER_DELAY_MS + 1 },
     })).toThrow(/streamIdleTimeoutMs.*no greater/)
   })
 })
@@ -527,7 +486,7 @@ describe('abort wiring', () => {
     const message = Object.defineProperty({}, 'role', {
       get() { throw original },
     })
-    const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
+    const adapter = adapterOf({ deepseek: { apiKey: 'test-key' } })
     const drain = async (): Promise<void> => {
       for await (const _chunk of adapter.stream({
         provider: 'deepseek',
@@ -548,7 +507,7 @@ describe('abort wiring', () => {
         throw original
       },
     })
-    const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
+    const adapter = adapterOf({ deepseek: { apiKey: 'test-key' } })
     const drain = async (): Promise<void> => {
       for await (const _chunk of adapter.stream({
         provider: 'deepseek',
@@ -562,7 +521,7 @@ describe('abort wiring', () => {
   })
 
   it('resolves catalog endpoints without an override before honoring pre-abort', async () => {
-    const adapter = new PiAiAdapter({ profiles: [{ provider: 'deepseek', apiKey: 'test-key' }] })
+    const adapter = adapterOf({ deepseek: { apiKey: 'test-key' } })
     const controller = new AbortController()
     controller.abort('already stopped')
     const chunks = []
diff --git a/packages/llm/llm-pi-ai/tests/dynamic-config.spec.ts b/packages/llm/llm-pi-ai/tests/dynamic-config.spec.ts
new file mode 100644
index 0000000000..d13234f8db
--- /dev/null
+++ b/packages/llm/llm-pi-ai/tests/dynamic-config.spec.ts
@@ -0,0 +1,199 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import LlmService, { LlmAdapter } from '@deepseek-ai/dsh-llm'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { CredentialsLocal } from '@deepseek-ai/dsh-credentials-local'
+import { settingsNamespace } from '@deepseek-ai/dsh-settings'
+import { SettingsLocal } from '@deepseek-ai/dsh-settings-local'
+import * as LlmPiAi from '@deepseek-ai/dsh-llm-pi-ai'
+import { assemble } from './assemble.ts'
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
+
+const NS = settingsNamespace('llm-pi-ai')
+
+/** Minimal foreign adapter: only needs to own a route the pi-ai plugin then wants. */
+class StubAdapter extends LlmAdapter {
+
+  override async * stream(): AsyncIterable<never> {
+    throw new Error('stub adapter must never stream')
+  }
+}
+
+const cleanups: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  while (cleanups.length > 0) await cleanups.pop()!()
+  await closeMockServers()
+  vi.unstubAllEnvs()
+})
+
+async function home(): Promise<string> {
+  const dir = await mkdtemp(join(tmpdir(), 'dsh-pi-dynamic-'))
+  cleanups.push(() => rm(dir, { recursive: true, force: true }))
+  return dir
+}
+
+/** Real dynamic composition mirroring the deepseek twin's harness. */
+async function boot(dir: string, config: LlmPiAi.Config): Promise<Context> {
+  const ctx = new Context()
+  cleanups.push(async () => {
+    await ctx.fiber.dispose()
+  })
+  await ctx.plugin(LlmService)
+  await ctx.plugin(SettingsLocal, { path: join(dir, 'settings.yaml'), watch: false })
+  await ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+  await ctx.plugin(LlmPiAi, config)
+  return ctx
+}
+
+describe('request-level dynamic profiles', () => {
+  it('mounts bare and dormant, then registers routes the moment settings supply providers', async () => {
+    vi.stubEnv('PI_DYNAMIC_KEY', '')
+    const dir = await home()
+    await writeFile(join(dir, '.env'), 'PI_DYNAMIC_KEY=pk-from-settings\n')
+    const server = await mockServer([{ events: textEvents }])
+    // The exact product posture: `- id: llm-pi-ai` with no config at all.
+    const ctx = await boot(dir, {})
+
+    expect(ctx.llm.listProviders()).toEqual([])
+    // Dormant ≠ invisible: every installed catalog provider is configurable
+    // before any route exists, each addressed inside the providers dict.
+    const directory = ctx.llm.listConfigurableProviders()
+    expect(directory.length).toBeGreaterThan(30)
+    expect(directory).toContainEqual({
+      provider: 'openai',
+      displayName: 'openai',
+      settingsNs: 'llm-pi-ai',
+      settingsPath: ['providers', 'openai'],
+    })
+    await ctx.settings.update(NS, {
+      providers: { deepseek: { apiKeyEnv: 'PI_DYNAMIC_KEY', baseURL: server.url } },
+    })
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['deepseek'])
+    await expect(ctx.llm.listModels('deepseek')).resolves.not.toHaveLength(0)
+
+    const result = await assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] })
+    expect(result.message.content).toEqual([{ type: 'text', text: 'hello' }])
+    expect(server.headers[0]?.authorization).toBe('Bearer pk-from-settings')
+
+    // Emptying the user layer returns the adapter to its dormant state.
+    await ctx.settings.replace(NS, {})
+    expect(ctx.llm.listProviders()).toEqual([])
+  })
+
+  it('adds a provider route from settings and drops it when the user layer resets', async () => {
+    const dir = await home()
+    const server = await mockServer([{ events: textEvents }])
+    const ctx = await boot(dir, {
+      providers: { openai: { apiKey: 'k', baseURL: 'http://127.0.0.1:1/v1' } },
+    })
+
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['openai'])
+    await ctx.settings.update(NS, {
+      providers: { deepseek: { apiKey: 'live-key', baseURL: server.url } },
+    })
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['openai', 'deepseek'])
+
+    const result = await assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] })
+    expect(result.message.content).toEqual([{ type: 'text', text: 'hello' }])
+    expect(server.headers[0]?.authorization).toBe('Bearer live-key')
+
+    // Reset the user layer: the settings-born route unregisters, the
+    // composition route stays.
+    await ctx.settings.replace(NS, {})
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['openai'])
+    await expect(assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] }))
+      .rejects.toMatchObject({ code: 'NO_ADAPTER' })
+  })
+
+  it('rotates the per-request credential referenced by apiKeyEnv', async () => {
+    vi.stubEnv('PI_DYNAMIC_KEY', '')
+    const dir = await home()
+    await writeFile(join(dir, '.env'), 'PI_DYNAMIC_KEY=pk-one\n')
+    const server = await mockServer([{ events: textEvents }, { events: textEvents }])
+    const ctx = await boot(dir, {
+      providers: { deepseek: { apiKeyEnv: 'PI_DYNAMIC_KEY', baseURL: server.url } },
+    })
+
+    await assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] })
+    expect(server.headers[0]?.authorization).toBe('Bearer pk-one')
+
+    await ctx.credentials.set(credentialRef('PI_DYNAMIC_KEY'), 'pk-two')
+    await assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] })
+    expect(server.headers[1]?.authorization).toBe('Bearer pk-two')
+  })
+
+  it('re-registers routes in place when a captured retry policy changes', async () => {
+    const dir = await home()
+    const ctx = await boot(dir, { providers: { openai: {} } })
+
+    await ctx.settings.update(NS, {
+      providers: {
+        openai: {
+          retryPolicy: { mode: 'always', backoff: { initialDelayMs: 25, maxDelayMs: 100, jitterRatio: 0.2 } },
+        },
+      },
+    })
+    expect(ctx.llm.providerRetryPolicy('openai')).toEqual({
+      mode: 'always',
+      initialDelayMs: 25,
+      maxDelayMs: 100,
+      jitterRatio: 0.2,
+    })
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['openai'])
+  })
+
+  it('keeps the last good profiles when a settings snapshot names an unknown provider', async () => {
+    const dir = await home()
+    const ctx = await boot(dir, { providers: { openai: {} } })
+
+    // Schema-valid but catalog-invalid: the resolver rejects it and the
+    // last good route set keeps serving.
+    await ctx.settings.update(NS, { providers: { 'not-a-real-provider': {} } })
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['openai'])
+  })
+
+  it('keeps serving its routes when a settings-born route collides with another adapter', async () => {
+    const dir = await home()
+    const server = await mockServer([{ events: textEvents }, { events: textEvents }])
+    const ctx = await boot(dir, { providers: { openai: { apiKey: 'pk', baseURL: `${server.url}/v1` } } })
+    // Another adapter owns `anthropic`; the registry must refuse to hand it over.
+    ctx.llm.registerAdapter(['anthropic'], new StubAdapter())
+
+    await ctx.settings.update(NS, {
+      providers: {
+        openai: { apiKey: 'pk', baseURL: `${server.url}/v1` },
+        anthropic: { apiKey: 'other' },
+      },
+    })
+
+    // The conflicting swap was refused whole: the previous route set still
+    // owns openai (an eager dispose would have dropped it), and anthropic
+    // still belongs to its original adapter.
+    expect(ctx.llm.listProviders().map(provider => provider.id).sort()).toEqual(['anthropic', 'openai'])
+    const result = await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
+    expect(result.finish.kind).toBe('error')
+    expect(server.paths).toEqual(['/v1/responses'])
+
+    // Reverting to the working configuration re-applies, even though its
+    // facts equal the ones the registry already holds.
+    await ctx.settings.replace(NS, {})
+    expect(ctx.llm.listProviders().map(provider => provider.id).sort()).toEqual(['anthropic', 'openai'])
+    await assemble(ctx, { provider: 'openai', model: 'gpt-4.1', messages: [] })
+    expect(server.paths).toEqual(['/v1/responses', '/v1/responses'])
+  })
+
+  it('ignores a settings document that merely reorders its provider keys', async () => {
+    const dir = await home()
+    const ctx = await boot(dir, { providers: { openai: {}, anthropic: {} } })
+    const before = ctx.llm.listProviders().map(provider => provider.id)
+
+    // Same routes, different YAML key order: nothing about the registration
+    // changed, so no swap should happen at all.
+    await ctx.settings.update(NS, { providers: { anthropic: {}, openai: {} } })
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(before)
+  })
+})
diff --git a/packages/llm/llm-pi-ai/tests/loader-composition.spec.ts b/packages/llm/llm-pi-ai/tests/loader-composition.spec.ts
new file mode 100644
index 0000000000..460e78b7c2
--- /dev/null
+++ b/packages/llm/llm-pi-ai/tests/loader-composition.spec.ts
@@ -0,0 +1,116 @@
+/**
+ * Real-composition guard for the dormant pi-ai posture: LlmService,
+ * settings-local, credentials-local, and a bare `llm-pi-ai` row boot from a
+ * test-only cordis.yml through the actual Loader + Include path, an external
+ * edit of settings.yaml registers the route live, and the next request
+ * carries the credential the .env supplies. A hand-mounted `ctx.plugin` cannot
+ * catch Loader export-shape failures, which is why the twin adapter has the
+ * same guard.
+ */
+
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { pathToFileURL } from 'node:url'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import Loader from '@cordisjs/plugin-loader'
+import Include from '@cordisjs/plugin-include'
+import LlmService from '@deepseek-ai/dsh-llm'
+import CredentialsLocal from '@deepseek-ai/dsh-credentials-local'
+import SettingsLocal from '@deepseek-ai/dsh-settings-local'
+import * as LlmPiAi from '@deepseek-ai/dsh-llm-pi-ai'
+import { assemble } from './assemble.ts'
+import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
+
+let root: string | undefined
+let context: Context | undefined
+
+afterEach(async () => {
+  await context?.fiber.dispose()
+  context = undefined
+  if (root !== undefined) await rm(root, { recursive: true, force: true })
+  root = undefined
+  await closeMockServers()
+  vi.unstubAllEnvs()
+})
+
+/** Boot the dormant composition: a bare `llm-pi-ai` row with no config at all. */
+async function loadComposition(): Promise<{ ctx: Context; settingsPath: string }> {
+  root = await mkdtemp(join(tmpdir(), 'dsh-pi-composition-'))
+  const settingsPath = join(root, 'settings.yaml')
+  await writeFile(settingsPath, '# personal settings\n')
+  await writeFile(join(root, '.env'), 'PI_COMPOSITION_KEY=key-from-store\n')
+
+  const configPath = join(root, 'cordis.yml')
+  await writeFile(configPath, [
+    '- id: llm',
+    "  name: 'test-llm-service'",
+    '- id: settings',
+    "  name: '@deepseek-ai/dsh-settings-local'",
+    '  config:',
+    `    path: ${JSON.stringify(settingsPath)}`,
+    '    debounceMs: 10',
+    '- id: credentials',
+    "  name: '@deepseek-ai/dsh-credentials-local'",
+    '  config:',
+    `    path: ${JSON.stringify(join(root, '.env'))}`,
+    '    debounceMs: 10',
+    '- id: llm-pi-ai',
+    "  name: '@deepseek-ai/dsh-llm-pi-ai'",
+    '',
+  ].join('\n'))
+
+  const ctx = new Context()
+  context = ctx
+  ctx.baseUrl = pathToFileURL(root).href + '/'
+  await ctx.plugin(Loader)
+  ctx.loader.builtins.include = Include
+  const modules = new Map<string, unknown>([
+    ['test-llm-service', LlmService],
+    ['@deepseek-ai/dsh-settings-local', SettingsLocal],
+    ['@deepseek-ai/dsh-credentials-local', CredentialsLocal],
+    ['@deepseek-ai/dsh-llm-pi-ai', LlmPiAi],
+  ])
+  ctx.loader.internal = {
+    version: 'v2',
+    async import(specifier: string) {
+      if (!modules.has(specifier)) throw new Error(`unexpected Loader import: ${specifier}`)
+      return modules.get(specifier)
+    },
+  } as unknown as NonNullable<typeof ctx.loader.internal>
+  await ctx.loader.create({
+    name: 'cordis:include',
+    config: { path: pathToFileURL(configPath).href },
+  })
+  await ctx.loader.await()
+  return { ctx, settingsPath }
+}
+
+describe('llm-pi-ai real dormant composition', () => {
+  it('boots with zero routes and registers one the moment settings supply a profile', async () => {
+    vi.stubEnv('PI_COMPOSITION_KEY', '')
+    const server = await mockServer([{ events: textEvents }])
+    const { ctx, settingsPath } = await loadComposition()
+
+    // The shipped posture: the adapter exists, no route does.
+    expect(ctx.llm.listProviders()).toEqual([])
+
+    // Exactly what the web Models page leaves on disk.
+    await writeFile(settingsPath, [
+      'llm-pi-ai:',
+      '  providers:',
+      '    deepseek:',
+      '      apiKeyEnv: PI_COMPOSITION_KEY',
+      `      baseURL: ${server.url}`,
+      '',
+    ].join('\n'))
+    await vi.waitFor(() => {
+      expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['deepseek'])
+    }, { timeout: 5000 })
+
+    const result = await assemble(ctx, { provider: 'deepseek', model: 'deepseek-v4-flash', messages: [] })
+    expect(result.message.content).toEqual([{ type: 'text', text: 'hello' }])
+    expect(server.headers[0]?.authorization).toBe('Bearer key-from-store')
+  })
+})
diff --git a/packages/llm/llm-pi-ai/tests/mock-server.ts b/packages/llm/llm-pi-ai/tests/mock-server.ts
new file mode 100644
index 0000000000..573c61a9a2
--- /dev/null
+++ b/packages/llm/llm-pi-ai/tests/mock-server.ts
@@ -0,0 +1,82 @@
+import { createServer } from 'node:http'
+import type { IncomingMessage, Server, ServerResponse } from 'node:http'
+
+export interface MockServer {
+  url: string
+  paths: string[]
+  requests: unknown[]
+  headers: IncomingMessage['headers'][]
+  readonly closedResponses: number
+  responseClosed: Promise<void>
+}
+
+const servers: Server[] = []
+
+/** Close every server opened since the last call; run from each spec's afterEach. */
+export async function closeMockServers(): Promise<void> {
+  await Promise.all(servers.splice(0).map(server => new Promise(resolve => server.close(resolve))))
+}
+
+/** A minimal complete text generation in pi-ai's chat-completions shape. */
+export const textEvents = [
+  '{"choices":[{"delta":{"role":"assistant","content":""},"index":0,"finish_reason":null}]}',
+  '{"choices":[{"delta":{"content":"hello"},"index":0,"finish_reason":null}]}',
+  '{"choices":[{"delta":{},"index":0,"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
+  '[DONE]',
+]
+
+/** Local provider stand-in: replays scripted behaviors per request. */
+export async function mockServer(script: {
+  status?: number
+  events?: string[]
+  body?: string
+  delayMs?: number
+  headers?: Record<string, string>
+}[]): Promise<MockServer> {
+  const paths: string[] = []
+  const requests: unknown[] = []
+  const headers: IncomingMessage['headers'][] = []
+  let closedResponses = 0
+  const responseClosed = Promise.withResolvers<undefined>()
+  const server = createServer((request: IncomingMessage, response: ServerResponse) => {
+    response.on('close', () => {
+      closedResponses += 1
+      responseClosed.resolve(undefined)
+    })
+    let body = ''
+    request.on('data', (chunk: Buffer) => { body += chunk.toString('utf8') })
+    request.on('end', () => {
+      paths.push(request.url ?? '')
+      requests.push(body.length === 0 ? undefined : JSON.parse(body))
+      headers.push(request.headers)
+      const behavior = script.shift() ?? { status: 500, body: 'script exhausted' }
+      if (behavior.status !== undefined && behavior.status !== 200) {
+        response.writeHead(behavior.status, { 'content-type': 'application/json', ...behavior.headers })
+        response.end(behavior.body ?? '{}')
+        return
+      }
+      response.writeHead(200, { 'content-type': 'text/event-stream' })
+      let index = 0
+      const writeNext = (): void => {
+        const event = behavior.events?.[index++]
+        if (event === undefined) { response.end(); return }
+        response.write(`data: ${event}\n\n`)
+        if (behavior.delayMs === undefined) writeNext()
+        else setTimeout(writeNext, behavior.delayMs)
+      }
+      writeNext()
+    })
+  })
+  servers.push(server)
+  await new Promise<void>(resolve => server.listen(0, '127.0.0.1', resolve))
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('no port')
+  return {
+    url: `http://127.0.0.1:${address.port}`,
+    paths,
+    requests,
+    headers,
+    responseClosed: responseClosed.promise,
+    get closedResponses() { return closedResponses },
+  }
+}
diff --git a/packages/llm/llm-pi-ai/tests/provider-apis.e2e.ts b/packages/llm/llm-pi-ai/tests/provider-apis.e2e.ts
index 0d08e9b93d..f59859bfad 100644
--- a/packages/llm/llm-pi-ai/tests/provider-apis.e2e.ts
+++ b/packages/llm/llm-pi-ai/tests/provider-apis.e2e.ts
@@ -43,12 +43,11 @@ async function harness(): Promise<Context> {
   contexts.push(ctx)
   await ctx.plugin(LlmService)
   await ctx.plugin(LlmPiAi, {
-    providers: providerCases.map(profile => ({
-      provider: profile.provider,
+    providers: Object.fromEntries(providerCases.map(profile => [profile.provider, {
       ...profile.apiKey === undefined ? {} : { apiKey: profile.apiKey },
       ...profile.baseURL === undefined ? {} : { baseURL: profile.baseURL },
       ...profile.headers === undefined ? {} : { headers: profile.headers },
-    })),
+    }])),
   })
   return ctx
 }
diff --git a/packages/llm/llm-pi-ai/tests/sdk-options.spec.ts b/packages/llm/llm-pi-ai/tests/sdk-options.spec.ts
index d96297c242..3f12ef4460 100644
--- a/packages/llm/llm-pi-ai/tests/sdk-options.spec.ts
+++ b/packages/llm/llm-pi-ai/tests/sdk-options.spec.ts
@@ -10,6 +10,7 @@ vi.mock('@earendil-works/pi-ai/compat', async (importOriginal) => {
 })
 
 import { PiAiAdapter } from '../src/adapter.ts'
+import { resolveProfiles } from '../src/config.ts'
 
 afterEach(() => { streamSimple.mockReset() })
 
@@ -21,7 +22,10 @@ describe('pi-ai SDK retry boundary', () => {
         throw failure
       },
     })
-    const adapter = new PiAiAdapter({ profiles: [{ provider: 'openai', apiKey: 'test-key' }] })
+    const adapter = new PiAiAdapter({
+      profiles: () => resolveProfiles({ openai: { apiKey: 'test-key' } }),
+      resolveApiKey: () => Promise.resolve('test-key'),
+    })
     const drain = async (): Promise<void> => {
       for await (const _chunk of adapter.stream({
         provider: 'openai',
diff --git a/packages/llm/llm-pi-ai/tsconfig.json b/packages/llm/llm-pi-ai/tsconfig.json
index 45c2af21a5..ee8a81e73b 100644
--- a/packages/llm/llm-pi-ai/tsconfig.json
+++ b/packages/llm/llm-pi-ai/tsconfig.json
@@ -20,6 +20,12 @@
     {
       "path": "../../llm/llm"
     },
+    {
+      "path": "../../credentials/credentials"
+    },
+    {
+      "path": "../../settings/settings"
+    },
     {
       "path": "../../support/invariants"
     },
diff --git a/packages/llm/llm-retry/tests/transport-recovery.spec.ts b/packages/llm/llm-retry/tests/transport-recovery.spec.ts
index f9de22a120..a17074504a 100644
--- a/packages/llm/llm-retry/tests/transport-recovery.spec.ts
+++ b/packages/llm/llm-retry/tests/transport-recovery.spec.ts
@@ -93,7 +93,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     const port = await unusedPort()
     context = await harness(`http://127.0.0.1:${port}`, { initialDelayMs: 100 })
     const agent = context.agentLoop.create(SessionId('wire-refused'), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
     let recoveryServer: Promise<MockLlmServer> | undefined
@@ -128,7 +128,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     })
     context = await harness(server.baseURL)
     const agent = context.agentLoop.create(SessionId(`wire-${behavior}`), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
 
@@ -154,7 +154,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     })
     context = await harness(server.baseURL)
     const agent = context.agentLoop.create(SessionId('wire-empty'), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
 
@@ -182,7 +182,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     })
     context = await harness(server.baseURL)
     const agent = context.agentLoop.create(SessionId('wire-partial-eof'), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
 
@@ -209,7 +209,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     // the stalled attempt and the mock server's immediate successful response.
     context = await harness(server.baseURL, { streamIdleTimeoutMs: 1_000 })
     const agent = context.agentLoop.create(SessionId('wire-stall'), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
 
@@ -227,7 +227,7 @@ describe('bounded retry through the real DeepSeek HTTP/SSE adapter', () => {
     })
     context = await harness(server.baseURL)
     const agent = context.agentLoop.create(SessionId('wire-exhausted'), {
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'mock-model',
     })
 
diff --git a/packages/llm/llm/README.i18n.yaml b/packages/llm/llm/README.i18n.yaml
index 49ff6d7c48..50c6c42cfd 100644
--- a/packages/llm/llm/README.i18n.yaml
+++ b/packages/llm/llm/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/llm/llm/README.md
-README.md: d343449d1530bf70a3a8c57f883894e29c42d18f
-README.zh.md: 4dc4a0ca06378116d05fdb4b9b048738930511fd
+README.md: f4be9b298c730b7ec0a0faa4470890fe5e3f5af8
+README.zh.md: 9aa22ba861ee368523b03a5472ea783bbcbbd765
diff --git a/packages/llm/llm/README.md b/packages/llm/llm/README.md
index d343449d15..f4be9b298c 100644
--- a/packages/llm/llm/README.md
+++ b/packages/llm/llm/README.md
@@ -10,12 +10,14 @@ An adapter registry plus a single streaming call surface, interceptable via a wa
 
 ### Public API
 
-- `ctx.llm.registerAdapter(providers: string[], adapter: LlmAdapter): () => void` Register one adapter instance for the given provider routes. Registration is all-or-nothing, and is disposed with the calling fiber.
+- `ctx.llm.registerAdapter(providers: string[], adapter: LlmAdapter): AdapterRegistrationHandle` Register one adapter instance for the given provider routes. Registration is all-or-nothing, and is disposed with the calling fiber. The returned disposer also carries `replace(providers)`: the candidate route set is validated in full before anything moves, so a conflict with another adapter leaves the current routes registered and serving, and the swap itself is one synchronous section with no observable gap. `replace([])` is legal — a registration holding zero routes — unlike an empty initial registration.
 - `ctx.llm.listProviders(): LlmProviderInfo[]` Describe registered provider routes in registration order.
+- `ctx.llm.registerConfigurableProviders(entries: readonly LlmConfigurableProvider[]): () => void` Declare provider routes an adapter plugin can activate through configuration — registered or dormant — each naming its owning settings namespace and the path to its profile inside that section. All-or-nothing (`INVALID_DIRECTORY`/`DUPLICATE_DIRECTORY`), disposed with the calling fiber.
+- `ctx.llm.listConfigurableProviders(): LlmConfigurableProvider[]` List the declared directory in declaration order; configuration surfaces merge it with `listProviders()` to mark each entry live or dormant.
 - `ctx.llm.providerRetryPolicy(provider: string): ResolvedRetryPolicy` Return the provider-owned retry policy captured during registration, with normal defaults resolved.
 - `ctx.llm.listModels(provider: string): Promise<LlmModelInfo[]>` Discover the models one registered provider currently advertises.
-- `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise<LlmResolvedModelInfo>` Resolve validated exact-model identity plus available context and reasoning metadata from the owning adapter, with optional cancellation for asynchronous adapters.
-- `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise<LlmCallConfig>` Validate an explicit effort and materialize an adapter-configured default without clamping.
+- `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise<LlmResolvedModelInfo>` Resolve validated exact-model identity plus available context, output-default, and reasoning metadata from the owning adapter, with optional cancellation for asynchronous adapters.
+- `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise<LlmCallConfig>` Validate an explicit effort and materialize adapter-configured call defaults without clamping.
 - `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise<PreparedLlmCall>` Resolve a config and capture its current adapter registration as one cancellable, one-shot call.
 - `ctx.llm.stream(options: GenerateOptions): AsyncIterable<StreamChunk>` Stream one model call as raw chunks (token-level deltas). Consumers assemble the chunks into blocks/messages with `BlockAssembler`.
 
@@ -23,9 +25,11 @@ An adapter registry plus a single streaming call surface, interceptable via a wa
 
 Provider and model metadata is a discovery surface, not a routing whitelist. `registerAdapter()` still owns provider exclusivity and captures the adapter's retry policy for each route, while an adapter may accept model ids absent from `listModels()`; consumers must not reject a request because its model is unlisted. Returned selector metadata is detached and invalid or duplicate adapter entries fail with `INVALID_ADAPTER` or `INVALID_CATALOG`.
 
-Exact-model metadata is a separate correctness query, not a catalog decoration or global LLM setting. `resolveModelInfo()` asks the adapter that owns the exact provider/model route once; an adapter can describe an unlisted dynamic model, and absent `context` or `reasoning` fields mean only that those capabilities are unavailable. Invalid identity, context, or reasoning metadata fails with `INVALID_MODEL_INFO`, `INVALID_MODEL_CONTEXT`, or `INVALID_MODEL_REASONING`.
+Every topology commit point — adapter routes registering or disposing, directory entries appearing or withdrawing — emits the payload-free `llm/adapters-updated` event after the mutation, so consumers re-read `listProviders()`/`listModels()`/`listConfigurableProviders()` instead of polling. Observer failures are contained (logged, non-vetoing); only `INVARIANT`-coded failures rethrow after the fan-out.
 
-Reasoning identifiers are opaque adapter-owned strings rather than a core enum. An adapter publishes its ordered selectable list, including an `off` id when that model's capability API exposes one. `resolveCallConfig()` accepts only an exact advertised identifier, materializes `defaultEffort` when present, and otherwise preserves the provider default. Asynchronous model resolvers receive the caller's signal and must settle promptly after cancellation. `prepareCall()` additionally retains the exact adapter registration through header logging and terminal dispatch, so HMR cannot combine one adapter's capability result with another adapter's request; reusing its one-shot handle or changing its call-config fields fails with `INVALID_PREPARED_CALL`. An unsupported explicit or configured effort fails with `UNSUPPORTED_REASONING_EFFORT` before provider I/O.
+Exact-model metadata is a separate correctness query, not a catalog decoration or global LLM setting. `resolveModelInfo()` asks the adapter that owns the exact provider/model route once; an adapter can describe an unlisted dynamic model, and absent `context`, `defaultMaxTokens`, or `reasoning` fields preserve unknown capacity, provider-owned output defaults, or unavailable reasoning capability. Invalid identity, context, output default, or reasoning metadata fails with `INVALID_MODEL_INFO`, `INVALID_MODEL_CONTEXT`, `INVALID_MODEL_MAX_TOKENS`, or `INVALID_MODEL_REASONING`.
+
+`defaultMaxTokens` is an adapter-configured per-request output cap, not a model hard limit. `resolveCallConfig()` materializes it only when the request omits `maxTokens`; an explicit cap wins. Reasoning identifiers are opaque adapter-owned strings rather than a core enum: the same resolution accepts only an exact advertised identifier, materializes `defaultEffort` when present, and otherwise preserves the provider default. Asynchronous model resolvers receive the caller's signal and must settle promptly after cancellation. `prepareCall()` additionally reports which `maxTokens` and `reasoningEffort` fields it materialized in `adapterDefaults` and retains the exact adapter registration through header logging and terminal dispatch, so HMR cannot combine one adapter's capability result with another adapter's request; reusing its one-shot handle or changing its call-config fields fails with `INVALID_PREPARED_CALL`. An unsupported explicit or configured effort fails with `UNSUPPORTED_REASONING_EFFORT` before provider I/O.
 
 ### Events
 
@@ -35,7 +39,7 @@ Reasoning identifiers are opaque adapter-owned strings rather than a core enum.
 
 ### Extension points
 
-- Subclass `LlmAdapter` and call `ctx.llm.registerAdapter(providers, adapter)` to add one or more provider routes. `GenerateOptions.provider` selects the adapter; `GenerateOptions.model` is adapter-owned and may be resolved dynamically. Override `providerRetryPolicy()` to supply provider-owned recovery configuration, `providerInfo()` and asynchronous `listModels()` to expose selector metadata, then implement `resolveModel()` when exact identity, capacity, or selectable reasoning efforts are available; an asynchronous resolver must honor its optional cancellation signal. The defaults use bounded normal retry policy, use the route and model ids as names, advertise no models, and return no capacity or reasoning metadata.
+- Subclass `LlmAdapter` and call `ctx.llm.registerAdapter(providers, adapter)` to add one or more provider routes. `GenerateOptions.provider` selects the adapter; `GenerateOptions.model` is adapter-owned and may be resolved dynamically. Override `providerRetryPolicy()` to supply provider-owned recovery configuration, `providerInfo()` and asynchronous `listModels()` to expose selector metadata, then implement `resolveModel()` when exact identity, capacity, an output default, or selectable reasoning efforts are available; an asynchronous resolver must honor its optional cancellation signal. The defaults use bounded normal retry policy, use the route and model ids as names, advertise no models, and return no capacity, output default, or reasoning metadata.
 - Wrap `llm/stream` via `ctx.on()` waterfall listeners for caching, logging, or routing. A wrapper that retries after emitting a chunk has no durable attempt boundary; shipped agent retry policy therefore uses `agent/request-error` instead.
 
 ### Messages (`message.ts`) and content blocks (`types.ts`)
@@ -48,7 +52,7 @@ Streaming is a raw chunk protocol (`block-start`, `text-delta`, `reasoning-delta
 
 ### Call configuration (`call-config.ts`)
 
-`LlmCallConfig` is the provider, model, optional adapter-owned reasoning effort, and sampling scalars of one conversation's requests (`provider`, `model`, `reasoningEffort`, `temperature`, `maxTokens`, `stop` — each mapping 1:1 onto the same-named `GenerateOptions` field). It is per-conversation state recorded in the session log as part of the request header (see the dsh-session `request/header` events), never a silently-adjustable per-call knob: the `agent/request` waterfall proposes a replacement, `prepareCall()` validates and defaults it under the turn signal, and the loop logs the effective value before using the prepared call's registration-bound stream. `callConfigEquals(a, b)` is the field-wise real-change detector; `deepFreeze(value)` is the ownership helper the loop applies to every built request before dispatch (`llm/stream` listeners and adapters read, never rewrite). `markAgentLoopRequest()` gives that exact object process-local loop provenance, and `isAgentLoopRequest()` lets observers distinguish it from independently logged auxiliary calls that may also be frozen and session-associated. `GenerateOptions.purpose` classifies logged auxiliary compaction and session-title calls so adapters can apply purpose-specific transport policy without changing ordinary conversation requests.
+`LlmCallConfig` is the provider, model, optional adapter-owned reasoning effort, and sampling scalars of one conversation's requests (`provider`, `model`, `reasoningEffort`, `temperature`, `maxTokens`, `stop` — each mapping 1:1 onto the same-named `GenerateOptions` field). It is per-conversation state recorded in the session log as part of the request header (see the dsh-session `request/header` events), never a silently-adjustable per-call knob: the `agent/request` waterfall proposes a replacement, `prepareCall()` validates it and materializes adapter defaults under the turn signal, and the loop logs the effective value plus adapter-default provenance before using the prepared call's registration-bound stream. The next proposal omits marked defaults so a changed route resolves its own values; unmarked explicit fields persist. `callConfigEquals(a, b)` is the field-wise real-change detector; `deepFreeze(value)` is the ownership helper the loop applies to every built request before dispatch (`llm/stream` listeners and adapters read, never rewrite). `markAgentLoopRequest()` gives that exact object process-local loop provenance, and `isAgentLoopRequest()` lets observers distinguish it from independently logged auxiliary calls that may also be frozen and session-associated. `GenerateOptions.purpose` classifies logged auxiliary compaction and session-title calls so adapters can apply purpose-specific transport policy without changing ordinary conversation requests.
 
 ### App attribution (`attribution.ts`)
 
@@ -67,7 +71,7 @@ Every product adapter sends application identity on provider HTTP requests. `att
 
 ### Real adapters
 
-Two adapters implement `LlmAdapter` on different internals: [`@deepseek-ai/dsh-llm-deepseek`](../llm-deepseek) uses direct fetch with `eventsource-parser` SSE framing for the `deepseek` route, while [`@deepseek-ai/dsh-llm-pi-ai`](../llm-pi-ai) dynamically resolves configured provider/model pairs through `@earendil-works/pi-ai`. Both follow the `StreamChunk` conventions in `types.ts`: usage precedes finish, tool arguments remain raw strings, and errors take one of two sanctioned paths. See [the twin LLM adapters](../../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md) for the design rationale.
+Two adapters implement `LlmAdapter` on different internals: [`@deepseek-ai/dsh-llm-deepseek`](../llm-deepseek) uses direct fetch with `eventsource-parser` SSE framing for the `deepseek-official` route, while [`@deepseek-ai/dsh-llm-pi-ai`](../llm-pi-ai) dynamically resolves configured provider/model pairs through `@earendil-works/pi-ai`. Both follow the `StreamChunk` conventions in `types.ts`: usage precedes finish, tool arguments remain raw strings, and errors take one of two sanctioned paths. See [the twin LLM adapters](../../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md) for the design rationale.
 
 ## Model Experience
 
diff --git a/packages/llm/llm/README.zh.md b/packages/llm/llm/README.zh.md
index 4dc4a0ca06..9aa22ba861 100644
--- a/packages/llm/llm/README.zh.md
+++ b/packages/llm/llm/README.zh.md
@@ -10,12 +10,14 @@
 
 ### 公开 API
 
-- `ctx.llm.registerAdapter(providers: string[], adapter: LlmAdapter): () => void` 为给定提供方路由注册一个适配器实例。注册要么全部成功，要么全部不生效，并且会随调用 fiber 一起 dispose（资源释放）。
+- `ctx.llm.registerAdapter(providers: string[], adapter: LlmAdapter): AdapterRegistrationHandle` 为给定提供方路由注册一个适配器实例。注册要么全部成功，要么全部不生效，并且会随调用 fiber 一起 dispose（资源释放）。返回的释放器还携带 `replace(providers)`：候选路由集合会在任何东西变动之前完整校验，因此与另一适配器冲突时，当前路由保持注册且继续服务，而替换本身是一个同步区段，不存在可观察的空档。`replace([])` 合法——一个持有零条路由的注册——这与空的初始注册不同。
 - `ctx.llm.listProviders(): LlmProviderInfo[]` 按注册顺序描述已注册提供方路由。
+- `ctx.llm.registerConfigurableProviders(entries: readonly LlmConfigurableProvider[]): () => void` 声明适配器插件可通过配置激活的提供方路由——无论已注册还是休眠——每个条目指明其所属 settings namespace，以及 profile 在该分节内的路径。要么全部成功，要么全部不生效（`INVALID_DIRECTORY`/`DUPLICATE_DIRECTORY`），并随调用 fiber dispose。
+- `ctx.llm.listConfigurableProviders(): LlmConfigurableProvider[]` 按声明顺序列出已声明的目录；配置界面将其与 `listProviders()` 合并，为每个条目标注存活或休眠。
 - `ctx.llm.providerRetryPolicy(provider: string): ResolvedRetryPolicy` 返回注册时捕获的提供方重试策略，并解析 normal 默认值。
 - `ctx.llm.listModels(provider: string): Promise<LlmModelInfo[]>` 发现某个已注册提供方当前公布的模型。
-- `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise<LlmResolvedModelInfo>` 从拥有精确路由的适配器解析经校验的确切模型身份、可用上下文和推理（reasoning）元数据；异步适配器可选地支持取消。
-- `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise<LlmCallConfig>` 校验显式推理强度，并填入适配器配置的默认值，但不自动调整。
+- `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise<LlmResolvedModelInfo>` 从拥有精确路由的适配器解析经校验的确切模型身份，以及可用上下文、输出默认值和推理（reasoning）元数据；异步适配器可选地支持取消。
+- `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise<LlmCallConfig>` 校验显式推理强度，并填入适配器配置的调用默认值，但不自动调整。
 - `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise<PreparedLlmCall>` 解析配置并将其当前适配器注册捕获为一次可取消、一次性调用。
 - `ctx.llm.stream(options: GenerateOptions): AsyncIterable<StreamChunk>` 将一次模型调用流式输出为原始分片（token 级增量）。消费方使用 `BlockAssembler` 将分片组装为块／消息。
 
@@ -23,9 +25,11 @@
 
 提供方与模型元数据是发现接口，不是路由白名单。`registerAdapter()` 仍拥有提供方排他性，并为每条路由捕获适配器的重试策略；适配器则可以接受 `listModels()` 中不存在的模型 id，消费方禁止因模型未列出而拒绝请求。返回的 selector 元数据与输入脱离，无效或重复适配器配置项会以 `INVALID_ADAPTER` 或 `INVALID_CATALOG` 失败。
 
-确切模型元数据是独立的正确性查询，不是 catalog 装饰或全局 LLM 设置。`resolveModelInfo()` 会向拥有精确提供方／模型路由的适配器查询一次；适配器可以描述未列出的动态模型，缺少 `context` 或 `reasoning` 字段只表示相应能力不可用。无效的身份、上下文或推理元数据会以 `INVALID_MODEL_INFO`、`INVALID_MODEL_CONTEXT` 或 `INVALID_MODEL_REASONING` 失败。
+每个拓扑提交点——适配器路由注册或 dispose、目录条目出现或撤回——都会在变更之后发出无载荷的 `llm/adapters-updated` 事件，消费方因此重读 `listProviders()`/`listModels()`/`listConfigurableProviders()` 而非轮询。观察者故障会被隔离（记录日志、不否决）；只有带 `INVARIANT` 码的故障会在扇出后重新抛出。
 
-推理标识符是由适配器持有的不透明字符串，而非核心枚举。适配器会公布有序可选列表；模型能力 API 提供 `off` id 时，列表也会包含它。`resolveCallConfig()` 只接受与已公布标识符完全一致的值，在存在 `defaultEffort` 时填入它，否则保留提供方默认值。异步模型解析器会接收调用方的 signal，并且必须在取消后迅速结束。`prepareCall()` 还会让精确适配器注册跨越请求头记录和最终分派，因此 HMR（热模块替换）不会将一个适配器的能力结果与另一个适配器的请求混用；复用其一次性句柄或更改调用配置字段会以 `INVALID_PREPARED_CALL` 失败。不支持的显式或配置推理强度会在提供方 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败。
+确切模型元数据是独立的正确性查询，不是 catalog 装饰或全局 LLM 设置。`resolveModelInfo()` 会向拥有精确提供方／模型路由的适配器查询一次；适配器可以描述未列出的动态模型，缺少 `context`、`defaultMaxTokens` 或 `reasoning` 字段会分别保留未知容量、提供方持有的输出默认值或不可用的推理能力。无效的身份、上下文、输出默认值或推理元数据会以 `INVALID_MODEL_INFO`、`INVALID_MODEL_CONTEXT`、`INVALID_MODEL_MAX_TOKENS` 或 `INVALID_MODEL_REASONING` 失败。
+
+`defaultMaxTokens` 是适配器配置的单次请求输出上限，不是模型硬上限。仅当请求省略 `maxTokens` 时，`resolveCallConfig()` 才会填入该值；显式上限优先。推理标识符是由适配器持有的不透明字符串，而非核心枚举：同一次解析只接受与已公布标识符完全一致的值，在存在 `defaultEffort` 时填入它，否则保留提供方默认值。异步模型解析器会接收调用方的 signal，并且必须在取消后迅速结束。`prepareCall()` 还会通过 `adapterDefaults` 报告它填入了哪些 `maxTokens` 和 `reasoningEffort` 字段，并让精确适配器注册跨越请求头记录和最终分派，因此 HMR（热模块替换）不会将一个适配器的能力结果与另一个适配器的请求混用；复用其一次性句柄或更改调用配置字段会以 `INVALID_PREPARED_CALL` 失败。不支持的显式或配置推理强度会在提供方 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败。
 
 ### 事件
 
@@ -35,7 +39,7 @@
 
 ### 扩展点
 
-- 继承 `LlmAdapter` 并调用 `ctx.llm.registerAdapter(providers, adapter)`，添加一条或多条提供方路由。`GenerateOptions.provider` 选择适配器；`GenerateOptions.model` 属于适配器，可以动态解析。覆盖 `providerRetryPolicy()` 以提供由提供方持有的恢复配置，覆盖 `providerInfo()` 和异步 `listModels()` 以公开 selector 元数据；精确身份、容量或可选推理强度可用时，实现 `resolveModel()`；异步解析器必须响应其可选的取消 signal。默认实现使用有界的 normal 重试策略，将路由和模型 id 用作名称，不公布模型，也不返回容量或推理元数据。
+- 继承 `LlmAdapter` 并调用 `ctx.llm.registerAdapter(providers, adapter)`，添加一条或多条提供方路由。`GenerateOptions.provider` 选择适配器；`GenerateOptions.model` 属于适配器，可以动态解析。覆盖 `providerRetryPolicy()` 以提供由提供方持有的恢复配置，覆盖 `providerInfo()` 和异步 `listModels()` 以公开 selector 元数据；精确身份、容量、输出默认值或可选推理强度可用时，实现 `resolveModel()`；异步解析器必须响应其可选的取消 signal。默认实现使用有界的 normal 重试策略，将路由和模型 id 用作名称，不公布模型，也不返回容量、输出默认值或推理元数据。
 - 包装 `llm/stream` 时，通过 `ctx.on()` waterfall listener 实现缓存、日志或路由。发出分片后重试的包装层没有持久尝试边界；因此已发布 agent 重试策略改用 `agent/request-error`。
 
 ### 消息（`message.ts`）与内容块（`types.ts`）
@@ -48,7 +52,7 @@
 
 ### 调用配置（`call-config.ts`）
 
-`LlmCallConfig` 是一个会话中各次请求的提供方、模型、可选的适配器持有推理强度和采样标量（`provider`、`model`、`reasoningEffort`、`temperature`、`maxTokens`、`stop`，每个都与同名 `GenerateOptions` 字段 1:1 映射）。它是作为请求标头一部分记录在会话日志中的每会话状态（见 dsh-session `request/header` 事件），绝不是可静默调整的每次调用旋钮：`agent/request` waterfall 会提议替换，`prepareCall()` 在轮次 signal 控制下校验并填入默认值，loop 随后记录生效值，再使用已准备调用中与注册绑定的流。`callConfigEquals(a, b)` 是逐字段真实变更检测器；`deepFreeze(value)` 是 loop 在 dispatch 前对每个已构建请求应用的所有权 helper（`llm/stream` listener 与适配器只读，绝不改写）。`markAgentLoopRequest()` 为该精确对象添加进程本地 loop 溯源，`isAgentLoopRequest()` 让观测方可以将其与同样可能冻结并关联会话、但独立记录的辅助调用区分。`GenerateOptions.purpose` 对已记录辅助压缩与会话标题调用分类，让适配器可以应用目的特定传输策略，而不改变普通会话请求。
+`LlmCallConfig` 是一个会话中各次请求的提供方、模型、可选的适配器持有推理强度和采样标量（`provider`、`model`、`reasoningEffort`、`temperature`、`maxTokens`、`stop`，每个都与同名 `GenerateOptions` 字段 1:1 映射）。它是作为请求标头一部分记录在会话日志中的每会话状态（见 dsh-session `request/header` 事件），绝不是可静默调整的每次调用旋钮：`agent/request` waterfall 会提议替换，`prepareCall()` 在轮次 signal 控制下校验它并填入适配器默认值，loop 随后记录生效值及适配器默认值来源，再使用已准备调用中与注册绑定的流。下一次提议会省略带标记的默认值，使变更后的路由解析自身的值；未带标记的显式字段会保留。`callConfigEquals(a, b)` 是逐字段真实变更检测器；`deepFreeze(value)` 是 loop 在 dispatch 前对每个已构建请求应用的所有权 helper（`llm/stream` listener 与适配器只读，绝不改写）。`markAgentLoopRequest()` 为该精确对象添加进程本地 loop 溯源，`isAgentLoopRequest()` 让观测方可以将其与同样可能冻结并关联会话、但独立记录的辅助调用区分。`GenerateOptions.purpose` 对已记录辅助压缩与会话标题调用分类，让适配器可以应用目的特定传输策略，而不改变普通会话请求。
 
 ### 应用归因（`attribution.ts`）
 
@@ -67,7 +71,7 @@
 
 ### 真实适配器
 
-两个适配器使用不同内部机制实现 `LlmAdapter`：[`@deepseek-ai/dsh-llm-deepseek`](../llm-deepseek) 针对 `deepseek` 路由使用直接 fetch 加 `eventsource-parser` SSE（Server-Sent Events）分帧，[`@deepseek-ai/dsh-llm-pi-ai`](../llm-pi-ai) 则通过 `@earendil-works/pi-ai` 动态解析已配置提供方／模型对。两者都遵循 `StreamChunk` 约定，定义见 `types.ts`：usage 先于 finish，工具参数保持原始字符串，错误使用两种已批准路径之一。设计理由见 [双 LLM 适配器](../../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md)。
+两个适配器使用不同内部机制实现 `LlmAdapter`：[`@deepseek-ai/dsh-llm-deepseek`](../llm-deepseek) 针对 `deepseek-official` 路由使用直接 fetch 加 `eventsource-parser` SSE（Server-Sent Events）分帧，[`@deepseek-ai/dsh-llm-pi-ai`](../llm-pi-ai) 则通过 `@earendil-works/pi-ai` 动态解析已配置提供方／模型对。两者都遵循 `StreamChunk` 约定，定义见 `types.ts`：usage 先于 finish，工具参数保持原始字符串，错误使用两种已批准路径之一。设计理由见 [双 LLM 适配器](../../../.agents/notes/implemented/architecture/2026-06-13-twin-llm-adapters.md)。
 
 ## 模型体验
 
diff --git a/packages/llm/llm/src/call-config.ts b/packages/llm/llm/src/call-config.ts
index c5247af143..2daa6d1a4c 100644
--- a/packages/llm/llm/src/call-config.ts
+++ b/packages/llm/llm/src/call-config.ts
@@ -27,6 +27,15 @@ export interface LlmCallConfig {
   stop?: string[]
 }
 
+/**
+ * Effective config fields supplied by exact-model adapter resolution rather
+ * than by the caller's request proposal.
+ */
+export interface LlmCallConfigAdapterDefaults {
+  reasoningEffort?: true
+  maxTokens?: true
+}
+
 /**
  * Field-wise equality over {@link LlmCallConfig} — the comparison a caller
  * runs to decide whether a proposed configuration is a real change (worth a
diff --git a/packages/llm/llm/src/index.ts b/packages/llm/llm/src/index.ts
index 1fb4443af0..2c078833f9 100644
--- a/packages/llm/llm/src/index.ts
+++ b/packages/llm/llm/src/index.ts
@@ -9,6 +9,7 @@
 import { Context, Service } from 'cordis'
 import type {
   GenerateOptions,
+  LlmConfigurableProvider,
   LlmFailure,
   LlmModelInfo,
   LlmResolvedModelInfo,
@@ -20,7 +21,7 @@ import { resolveRetryPolicy } from './retry-policy.ts'
 import type { ResolvedRetryPolicy } from './retry-policy.ts'
 import type { ProviderRequestId } from './brand.ts'
 import { callConfigEquals, deepFreeze } from './call-config.ts'
-import type { LlmCallConfig } from './call-config.ts'
+import type { LlmCallConfig, LlmCallConfigAdapterDefaults } from './call-config.ts'
 import { HarnessError } from './error.ts'
 import { bindAdapterFailureScope, markLlmAdapterFailure } from './adapter-failure.ts'
 import type { AdapterFailureScope } from './adapter-failure.ts'
@@ -34,7 +35,7 @@ export * from './message.ts'
 export * from './retry-policy.ts'
 export { BlockAssembler } from './assembler.ts'
 export { callConfigEquals, deepFreeze, isAgentLoopRequest, markAgentLoopRequest } from './call-config.ts'
-export type { LlmCallConfig } from './call-config.ts'
+export type { LlmCallConfig, LlmCallConfigAdapterDefaults } from './call-config.ts'
 export { isLlmAdapterFailure, llmFailureOf, llmRetryPolicyOf } from './adapter-failure.ts'
 
 declare module 'cordis' {
@@ -56,6 +57,17 @@ declare module 'cordis' {
      * @mode waterfall
      */
     'llm/stream'(this: LlmService, options: GenerateOptions, next: () => AsyncIterable<StreamChunk>): AsyncIterable<StreamChunk>
+
+    /**
+     * The provider topology changed: an adapter registered or unregistered
+     * routes, or the configurable-provider directory gained or lost entries.
+     * This is a payload-free registry notification fired at each commit point
+     * (including registration disposal); consumers re-read `listProviders()`,
+     * `listModels()`, or `listConfigurableProviders()` for the new state.
+     * Observer failures are contained and cannot veto the registry mutation.
+     * @mode emit
+     */
+    'llm/adapters-updated'(): void
   }
 }
 
@@ -113,6 +125,8 @@ export class LlmError extends HarnessError {
 export interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Config fields materialized by the captured adapter rather than proposed by the caller. */
+  readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
    * Dispatch this call once through the registration captured during
    * preparation. The request's call-config fields must match {@link config};
@@ -166,7 +180,7 @@ export abstract class LlmAdapter {
    * @param model - exact model id passed to {@link GenerateOptions.model}.
    * @param _signal - cancellation for this exact-model lookup; asynchronous
    *   implementations must settle promptly after it aborts.
-   * @returns provider/model identity plus any context and reasoning metadata.
+   * @returns provider/model identity plus any context, call-default, and reasoning metadata.
    */
   resolveModel(
     provider: string,
@@ -184,56 +198,159 @@ export abstract class LlmAdapter {
   abstract stream(options: GenerateOptions): AsyncIterable<StreamChunk>
 }
 
+/**
+ * What {@link LlmService.registerAdapter} returns: the disposer, plus an
+ * atomic route replacement for the same adapter instance.
+ */
+export interface AdapterRegistrationHandle {
+  /** Release every route this registration currently holds. */
+  (): void
+  /**
+   * Replace this registration's routes with `providers`, keeping the same
+   * adapter instance. The candidate set is validated in full first — a
+   * conflict with another adapter, an invalid name, or bad provider metadata
+   * throws and leaves the current routes untouched — and the swap itself is
+   * one synchronous section, so no request can observe a gap. An empty array
+   * is legal here (a settings section that emptied holds zero routes while
+   * staying registered), unlike an empty initial registration.
+   *
+   * Throws `LlmError` with code `REGISTRATION_DISPOSED` once the registration
+   * has been released: its routes are gone and its disposer has already run,
+   * so anything registered afterwards would have no owner left to release it.
+   * @param providers - the complete next route set for this registration.
+   */
+  replace(providers: string[]): void
+}
+
 /**
  * The abstract `llm` service: an adapter registry plus a streaming model-call
  * surface, interceptable via the `llm/stream` waterfall.
  */
 export class LlmService extends Service {
   private adapters = new Map<string, AdapterRegistration>()
+  private directory = new Map<string, LlmConfigurableProvider>()
 
   constructor(ctx: Context) {
     super(ctx, 'llm')
   }
 
+  /** Notify topology observers without letting one broken listener veto the commit. */
+  private emitAdaptersUpdated(): void {
+    // Cordis emit uses Array.map: one synchronous throw starves later
+    // listeners. Registry notifications are non-vetoing, so contain each
+    // callback independently; INVARIANT-coded failures still surface.
+    let invariantFailure: unknown
+    for (const listener of this.ctx.events.dispatch('emit', ['llm/adapters-updated']) as Array<() => unknown>) {
+      try {
+        const returned = listener()
+        if (returned != null && typeof (returned as PromiseLike<unknown>).then === 'function') {
+          // An emit listener may still be an async function; its rejection
+          // cannot reach the synchronous INVARIANT rethrow below, so it is
+          // contained here instead of becoming an unhandled rejection.
+          void Promise.resolve(returned as PromiseLike<unknown>).then(undefined, (error: unknown) => {
+            this.warnAdaptersListenerFailure(error)
+          })
+        }
+      } catch (error) {
+        if ((error as { code?: unknown } | null)?.code === 'INVARIANT') {
+          invariantFailure ??= error
+          continue
+        }
+        this.warnAdaptersListenerFailure(error)
+      }
+    }
+    if (invariantFailure !== undefined) throw invariantFailure as Error
+  }
+
+  /** Contained-listener diagnostic shared by the sync and async failure paths. */
+  private warnAdaptersListenerFailure(error: unknown): void {
+    this.ctx.logger.warn('llm: an llm/adapters-updated listener failed')
+    this.ctx.logger.warn(error)
+  }
+
   /**
    * Register an adapter for the given provider routes. Throws `LlmError` with code
    * `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing).
    * Disposed with the fiber.
    * @param providers - every provider route this adapter should serve.
    * @param adapter - the adapter that streams calls for those providers.
-   * @returns the disposer that unregisters all of them.
+   * @returns the disposer, carrying {@link AdapterRegistrationHandle.replace}.
    */
-  registerAdapter(providers: string[], adapter: LlmAdapter): () => void {
+  registerAdapter(providers: string[], adapter: LlmAdapter): AdapterRegistrationHandle {
+    // The routes this registration currently holds; `replace` rewrites it, and
+    // the disposer releases whatever it holds at disposal time.
+    const owned = new Set<string>()
+    // The disposer has run: `owned` being empty cannot say so on its own,
+    // because `replace([])` legally leaves a live registration holding none.
+    let released = false
     const dispose = this.ctx.effect(function* (this: LlmService) {
       if (providers.length === 0) throw new LlmError('an adapter must register at least one provider', 'INVALID_ADAPTER')
-      const unique = new Set<string>()
-      const registrations: AdapterRegistration[] = []
-      for (const provider of providers) {
-        if (provider.length === 0) throw new LlmError('adapter provider names must be non-empty', 'INVALID_ADAPTER')
-        if (unique.has(provider) || this.adapters.has(provider)) {
-          throw new LlmError(`an adapter for provider "${provider}" is already registered`, 'DUPLICATE_ADAPTER')
-        }
-        const info = adapter.providerInfo(provider)
-        if (typeof info.id !== 'string' || info.id !== provider || typeof info.name !== 'string' || info.name.length === 0) {
-          throw new LlmError(`adapter metadata for provider "${provider}" must preserve its id and have a non-empty name`, 'INVALID_ADAPTER')
-        }
-        unique.add(provider)
-        const retryPolicy = adapter.providerRetryPolicy(provider)
-          ?? resolveRetryPolicy(undefined, `llm: provider "${provider}" retryPolicy`)
-        registrations.push({
-          adapter,
-          provider: { id: info.id, name: info.name },
-          retryPolicy,
-        })
-      }
-      for (const registration of registrations) this.adapters.set(registration.provider.id, registration)
+      this.commitRoutes(owned, this.prepareRoutes(providers, adapter, owned))
       yield () => {
-        for (const provider of providers) this.adapters.delete(provider)
+        released = true
+        for (const provider of owned) this.adapters.delete(provider)
+        owned.clear()
+        this.emitAdaptersUpdated()
       }
     }.bind(this), 'llm.registerAdapter()')
     // ctx.effect's disposer returns Promise<void>; our disposer API is
     // synchronous fire-and-forget — discard the (always-resolved) promise.
-    return () => void dispose()
+    const handle = (() => void dispose()) as AdapterRegistrationHandle
+    handle.replace = (next: string[]): void => {
+      // Registering here would leak: the effect's disposer already ran, so
+      // nothing remains to release whatever this call would put in the map.
+      if (released) {
+        throw new LlmError('a disposed adapter registration cannot replace its routes', 'REGISTRATION_DISPOSED')
+      }
+      this.commitRoutes(owned, this.prepareRoutes(next, adapter, owned))
+    }
+    return handle
+  }
+
+  /**
+   * Validate one candidate route set for `adapter`, treating routes this
+   * registration already holds as available. Nothing is mutated: a rejected
+   * candidate leaves the registry exactly as it was.
+   */
+  private prepareRoutes(providers: string[], adapter: LlmAdapter, owned: ReadonlySet<string>): AdapterRegistration[] {
+    const unique = new Set<string>()
+    const registrations: AdapterRegistration[] = []
+    for (const provider of providers) {
+      if (provider.length === 0) throw new LlmError('adapter provider names must be non-empty', 'INVALID_ADAPTER')
+      if (unique.has(provider) || (this.adapters.has(provider) && !owned.has(provider))) {
+        throw new LlmError(`an adapter for provider "${provider}" is already registered`, 'DUPLICATE_ADAPTER')
+      }
+      const info = adapter.providerInfo(provider)
+      if (typeof info.id !== 'string' || info.id !== provider || typeof info.name !== 'string' || info.name.length === 0) {
+        throw new LlmError(`adapter metadata for provider "${provider}" must preserve its id and have a non-empty name`, 'INVALID_ADAPTER')
+      }
+      unique.add(provider)
+      const retryPolicy = adapter.providerRetryPolicy(provider)
+        ?? resolveRetryPolicy(undefined, `llm: provider "${provider}" retryPolicy`)
+      registrations.push({
+        adapter,
+        provider: { id: info.id, name: info.name },
+        retryPolicy,
+      })
+    }
+    return registrations
+  }
+
+  /**
+   * Swap this registration's routes for the prepared ones in one synchronous
+   * section, so no observer can see the registry between the release and the
+   * re-registration. The route set's one mutation point is also where
+   * `llm/adapters-updated` is published, so a `replace` announces itself
+   * exactly like a first registration.
+   */
+  private commitRoutes(owned: Set<string>, registrations: readonly AdapterRegistration[]): void {
+    for (const provider of owned) this.adapters.delete(provider)
+    owned.clear()
+    for (const registration of registrations) {
+      this.adapters.set(registration.provider.id, registration)
+      owned.add(registration.provider.id)
+    }
+    this.emitAdaptersUpdated()
   }
 
   /**
@@ -244,6 +361,50 @@ export class LlmService extends Service {
     return [...this.adapters.values()].map(({ provider }) => ({ ...provider }))
   }
 
+  /**
+   * Declare provider routes an adapter plugin can activate through
+   * configuration. Registration is all-or-nothing: an empty list, invalid
+   * entry, or a provider already declared by any registration throws
+   * `LlmError` without registering the rest. Disposed with the fiber.
+   * @param entries - every configurable provider this plugin owns.
+   * @returns the disposer that withdraws all of them.
+   */
+  registerConfigurableProviders(entries: readonly LlmConfigurableProvider[]): () => void {
+    const dispose = this.ctx.effect(function* (this: LlmService) {
+      if (entries.length === 0) {
+        throw new LlmError('a configurable-provider registration must declare at least one provider', 'INVALID_DIRECTORY')
+      }
+      const detached: LlmConfigurableProvider[] = []
+      for (const entry of entries) {
+        if (entry.provider.length === 0 || entry.displayName.length === 0 || entry.settingsNs.length === 0) {
+          throw new LlmError('configurable providers need a non-empty provider, displayName, and settingsNs', 'INVALID_DIRECTORY')
+        }
+        if (entry.settingsPath.some(segment => segment.length === 0)) {
+          throw new LlmError(`configurable provider "${entry.provider}" has an empty settingsPath segment`, 'INVALID_DIRECTORY')
+        }
+        if (this.directory.has(entry.provider) || detached.some(seen => seen.provider === entry.provider)) {
+          throw new LlmError(`configurable provider "${entry.provider}" is already declared`, 'DUPLICATE_DIRECTORY')
+        }
+        detached.push({ ...entry, settingsPath: [...entry.settingsPath] })
+      }
+      for (const entry of detached) this.directory.set(entry.provider, entry)
+      this.emitAdaptersUpdated()
+      yield () => {
+        for (const entry of detached) this.directory.delete(entry.provider)
+        this.emitAdaptersUpdated()
+      }
+    }.bind(this), 'llm.registerConfigurableProviders()')
+    return () => void dispose()
+  }
+
+  /**
+   * List every declared configurable provider, registered or dormant.
+   * @returns detached directory entries in declaration order.
+   */
+  listConfigurableProviders(): LlmConfigurableProvider[] {
+    return [...this.directory.values()].map(entry => ({ ...entry, settingsPath: [...entry.settingsPath] }))
+  }
+
   /**
    * Resolve the retry policy captured when one provider route was registered.
    * @param provider - registered provider route to inspect.
@@ -331,12 +492,21 @@ export class LlmService extends Service {
         'INVALID_MODEL_CONTEXT',
       )
     }
+    const defaultMaxTokens = resolved.defaultMaxTokens
+    if (defaultMaxTokens !== undefined
+      && (!Number.isSafeInteger(defaultMaxTokens) || defaultMaxTokens <= 0)) {
+      throw new LlmError(
+        `adapter returned invalid default maxTokens for provider "${provider}" model "${model}"`,
+        'INVALID_MODEL_MAX_TOKENS',
+      )
+    }
     const info: LlmResolvedModelInfo = {
       provider,
       id: model,
       name: resolved.name,
       ...resolved.description === undefined ? {} : { description: resolved.description },
       ...context === undefined ? {} : { context: { contextWindow: context.contextWindow } },
+      ...defaultMaxTokens === undefined ? {} : { defaultMaxTokens },
     }
     const reasoning = resolved.reasoning
     if (reasoning === undefined) return info
@@ -385,7 +555,7 @@ export class LlmService extends Service {
 
   /**
    * Validate a conversation call config against its exact model capability and
-   * materialize an adapter-configured default. Unsupported explicit efforts
+   * materialize adapter-configured defaults. Unsupported explicit efforts
    * reject before provider I/O; no clamping or aliasing is performed. This
    * standalone query does not bind a later dispatch; use {@link prepareCall}
    * when logging and streaming must share one adapter registration.
@@ -402,8 +572,12 @@ export class LlmService extends Service {
     config: LlmCallConfig,
     signal?: AbortSignal,
   ): Promise<LlmCallConfig> {
-    const reasoning = (await this.resolveModelInfoFor(registration, config.model, signal)).reasoning
-    const requested = config.reasoningEffort
+    const info = await this.resolveModelInfoFor(registration, config.model, signal)
+    const defaulted = config.maxTokens === undefined && info.defaultMaxTokens !== undefined
+      ? { ...config, maxTokens: info.defaultMaxTokens }
+      : config
+    const reasoning = info.reasoning
+    const requested = defaulted.reasoningEffort
     if (reasoning === undefined) {
       if (requested !== undefined) {
         throw new LlmError(
@@ -411,17 +585,17 @@ export class LlmService extends Service {
           'UNSUPPORTED_REASONING_EFFORT',
         )
       }
-      return config
+      return defaulted
     }
     const effective = requested ?? reasoning.defaultEffort
-    if (effective === undefined) return config
+    if (effective === undefined) return defaulted
     if (!reasoning.efforts.some(effort => effort.id === effective)) {
       throw new LlmError(
         `provider "${config.provider}" model "${config.model}" does not support reasoning effort "${effective}"`,
         'UNSUPPORTED_REASONING_EFFORT',
       )
     }
-    return requested === effective ? config : { ...config, reasoningEffort: effective }
+    return requested === effective ? defaulted : { ...defaulted, reasoningEffort: effective }
   }
 
   /**
@@ -434,12 +608,20 @@ export class LlmService extends Service {
    */
   async prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise<PreparedLlmCall> {
     const registration = this.registration(config.provider)
-    const resolvedConfig = deepFreeze(structuredClone(
-      await this.resolveCallConfigFor(registration, config, signal),
-    ))
+    const resolved = await this.resolveCallConfigFor(registration, config, signal)
+    const resolvedConfig = deepFreeze(structuredClone(resolved))
+    const adapterDefaults = deepFreeze<LlmCallConfigAdapterDefaults>({
+      ...config.reasoningEffort === undefined && resolved.reasoningEffort !== undefined
+        ? { reasoningEffort: true }
+        : {},
+      ...config.maxTokens === undefined && resolved.maxTokens !== undefined
+        ? { maxTokens: true }
+        : {},
+    })
     let dispatched = false
     return Object.freeze({
       config: resolvedConfig,
+      adapterDefaults,
       stream: (options: GenerateOptions): AsyncIterable<StreamChunk> => {
         if (dispatched) {
           throw new LlmError('a prepared LLM call can only be dispatched once', 'INVALID_PREPARED_CALL')
diff --git a/packages/llm/llm/src/invariant.ts b/packages/llm/llm/src/invariant.ts
index 76d55509cb..a755d87126 100644
--- a/packages/llm/llm/src/invariant.ts
+++ b/packages/llm/llm/src/invariant.ts
@@ -84,6 +84,21 @@ async function* validateStream(
 /** Install validation around every provider stream. */
 const install: InvariantInstaller = (ctx, fail) => {
   ctx.on('llm/stream', (_options, next) => validateStream(next(), fail), { global: true, prepend: true })
+  ctx.on('llm/adapters-updated', () => {
+    // A disposer-time emit can outlive the service-store entry during whole-
+    // context teardown; only a live service promises a readable registry.
+    const llm = ctx.get('llm')
+    if (llm === undefined) return
+    for (const provider of llm.listProviders()) {
+      try {
+        llm.providerRetryPolicy(provider.id)
+      } catch {
+        // Reaching here IS the violation: the notification promised a readable
+        // registry, and only that broken promise can make the lookup throw.
+        fail(`llm/adapters-updated fired while provider "${provider.id}" has no readable registration`)
+      }
+    }
+  }, { global: true })
 }
 
 /**
diff --git a/packages/llm/llm/src/types.ts b/packages/llm/llm/src/types.ts
index 4e6e0eabe2..83230f7079 100644
--- a/packages/llm/llm/src/types.ts
+++ b/packages/llm/llm/src/types.ts
@@ -119,6 +119,26 @@ export interface LlmProviderInfo {
   name: string
 }
 
+/**
+ * One provider route an adapter plugin can activate through configuration,
+ * whether or not the route is currently registered. Configuration surfaces
+ * merge this directory with `listProviders()` to offer every configurable
+ * provider alongside its live/dormant state.
+ */
+export interface LlmConfigurableProvider {
+  /** Provider route key this entry activates when configured. */
+  provider: string
+  /** Human-readable provider name for configuration surfaces. */
+  displayName: string
+  /** User-settings namespace whose section configures this provider. */
+  settingsNs: string
+  /**
+   * Path from that namespace's section root to this provider's profile
+   * object; empty when the whole section is the profile.
+   */
+  settingsPath: readonly string[]
+}
+
 /** One adapter-discovered model; catalog membership is advisory, not request validation. */
 export interface LlmModelInfo {
   /** Provider route that owns this model entry. */
@@ -162,6 +182,8 @@ export interface LlmModelReasoningInfo {
 export interface LlmResolvedModelInfo extends LlmModelInfo {
   /** Provider-owned context capacity when known. */
   context?: LlmModelContext
+  /** Adapter-configured per-request output cap materialized when callers omit one. */
+  defaultMaxTokens?: number
   /** Adapter-owned selectable reasoning levels when exposed. */
   reasoning?: LlmModelReasoningInfo
 }
diff --git a/packages/llm/llm/tests/invariant.spec.ts b/packages/llm/llm/tests/invariant.spec.ts
index 9eb868df1c..8aebb556c2 100644
--- a/packages/llm/llm/tests/invariant.spec.ts
+++ b/packages/llm/llm/tests/invariant.spec.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
-import { CallId } from '@deepseek-ai/dsh-llm'
+import LlmService, { CallId, LlmAdapter } from '@deepseek-ai/dsh-llm'
 import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
 import * as LlmInvariant from '@deepseek-ai/dsh-llm/invariant'
 import InvariantService from '@deepseek-ai/dsh-invariants'
@@ -84,3 +84,40 @@ describe('LLM stream invariants', () => {
     })()).rejects.toThrow('provider failed')
   })
 })
+
+describe('adapters-updated invariants', () => {
+  class NoopAdapter extends LlmAdapter {
+
+    async * stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
+      throw new Error('not exercised')
+    }
+  }
+
+  it('accepts a coherent registry at every topology notification', async () => {
+    const ctx = await setup()
+    await ctx.plugin(LlmService)
+    const dispose = ctx.llm.registerAdapter(['coherent'], new NoopAdapter())
+    ctx.llm.registerConfigurableProviders([
+      { provider: 'dormant', displayName: 'Dormant', settingsNs: 'ns', settingsPath: [] },
+    ])
+    dispose()
+    expect(ctx.llm.listProviders()).toEqual([])
+  })
+
+  it('skips the check when the service store has no llm entry', async () => {
+    const ctx = await setup()
+    expect(() => { ctx.emit('llm/adapters-updated') }).not.toThrow()
+  })
+
+  it('reports a notification whose registry cannot be re-read', async () => {
+    class BrokenLlm extends LlmService {
+      override providerRetryPolicy(_provider: string): never {
+        throw new Error('registration vanished')
+      }
+    }
+    const ctx = await setup()
+    await ctx.plugin(BrokenLlm)
+    expect(() => ctx.llm.registerAdapter(['ghost'], new NoopAdapter()))
+      .toThrow(/no readable registration/)
+  })
+})
diff --git a/packages/llm/llm/tests/service.spec.ts b/packages/llm/llm/tests/service.spec.ts
index 1afb3c4b6d..630b7fe483 100644
--- a/packages/llm/llm/tests/service.spec.ts
+++ b/packages/llm/llm/tests/service.spec.ts
@@ -60,6 +60,7 @@ class CatalogAdapter extends ScriptedAdapter {
     private readonly models: readonly LlmModelInfo[],
     private readonly contexts: Readonly<Record<string, LlmModelContext>> = {},
     private readonly reasoning: Readonly<Record<string, LlmModelReasoningInfo>> = {},
+    private readonly defaultMaxTokens: Readonly<Record<string, number>> = {},
   ) {
     super(SCRIPT)
   }
@@ -82,6 +83,7 @@ class CatalogAdapter extends ScriptedAdapter {
       name: model,
       ...this.contexts[model] === undefined ? {} : { context: this.contexts[model] },
       ...this.reasoning[model] === undefined ? {} : { reasoning: this.reasoning[model] },
+      ...this.defaultMaxTokens[model] === undefined ? {} : { defaultMaxTokens: this.defaultMaxTokens[model] },
     })
   }
 }
@@ -904,7 +906,12 @@ describe('LlmService', () => {
       { id: 'route', name: 'Route' },
       [],
       {},
-      { model: source },
+      {
+        model: source,
+        providerDefault: {
+          efforts: [{ id: ReasoningEffortId('standard'), name: 'Standard' }],
+        },
+      },
     ))
 
     const resolved = await ctx.llm.resolveModelInfo('route', 'model')
@@ -918,8 +925,54 @@ describe('LlmService', () => {
     })
     const explicit = { provider: 'route', model: 'model', reasoningEffort: ReasoningEffortId('ultra') }
     await expect(ctx.llm.resolveCallConfig(explicit)).resolves.toBe(explicit)
+    const providerDefault = { provider: 'route', model: 'providerDefault' }
+    await expect(ctx.llm.resolveCallConfig(providerDefault)).resolves.toBe(providerDefault)
   })
 
+  it('materializes an adapter-owned maxTokens default while preserving an explicit cap', async () => {
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+    ctx.llm.registerAdapter(['route'], new CatalogAdapter(
+      { id: 'route', name: 'Route' },
+      [],
+      {},
+      {},
+      { model: 256_000 },
+    ))
+
+    await expect(ctx.llm.resolveModelInfo('route', 'model')).resolves.toMatchObject({
+      defaultMaxTokens: 256_000,
+    })
+    await expect(ctx.llm.resolveCallConfig({ provider: 'route', model: 'model' })).resolves.toEqual({
+      provider: 'route',
+      model: 'model',
+      maxTokens: 256_000,
+    })
+    const preparedDefault = await ctx.llm.prepareCall({ provider: 'route', model: 'model' })
+    expect(preparedDefault.adapterDefaults).toEqual({ maxTokens: true })
+    const explicit = { provider: 'route', model: 'model', maxTokens: 8_192 }
+    await expect(ctx.llm.resolveCallConfig(explicit)).resolves.toBe(explicit)
+    const preparedExplicit = await ctx.llm.prepareCall(explicit)
+    expect(preparedExplicit.adapterDefaults).toEqual({})
+  })
+
+  it.each([0, 1.5, Number.MAX_SAFE_INTEGER + 1])(
+    'rejects invalid adapter-owned default maxTokens %s',
+    async (defaultMaxTokens) => {
+      const ctx = new Context()
+      await ctx.plugin(LlmService)
+      const adapter = new class extends ScriptedAdapter {
+        override resolveModel(provider: string, model: string): Promise<LlmResolvedModelInfo> {
+          return Promise.resolve({ provider, id: model, name: model, defaultMaxTokens })
+        }
+      }(SCRIPT)
+      ctx.llm.registerAdapter(['route'], adapter)
+
+      await expect(ctx.llm.resolveModelInfo('route', 'model'))
+        .rejects.toMatchObject({ code: 'INVALID_MODEL_MAX_TOKENS' })
+    },
+  )
+
   it.each([
     [{ efforts: [] }, 'empty effort list'],
     [{ efforts: [{ id: '', name: 'Empty' }] }, 'empty id'],
@@ -1064,6 +1117,8 @@ describe('LlmService', () => {
     ctx.llm.registerAdapter(['route'], adapter)
     const prepared = await ctx.llm.prepareCall({ provider: 'route', model: 'model' })
     expect(Object.isFrozen(prepared.config)).toBe(true)
+    expect(Object.isFrozen(prepared.adapterDefaults)).toBe(true)
+    expect(prepared.adapterDefaults).toEqual({ reasoningEffort: true })
     const stream = prepared.stream({
       ...prepared.config,
       model: 'other',
@@ -1381,4 +1436,32 @@ describe('LlmService', () => {
     disposeAgain()
     expect(ctx.llm.listProviders()).toEqual([])
   })
+
+  it('refuses to replace routes on a registration that was already released', async () => {
+    // The leak this prevents: the effect's disposer has run, so a route added
+    // afterwards would sit in the registry with nothing left to release it.
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+
+    const handle = ctx.llm.registerAdapter(['m1'], new ScriptedAdapter(SCRIPT))
+    handle()
+    expect(() => { handle.replace(['leaked']) })
+      .toThrow(/disposed adapter registration cannot replace its routes/)
+    expect(ctx.llm.listProviders()).toEqual([])
+  })
+
+  it('still allows an empty route set on a live registration', async () => {
+    // `replace([])` is the settings-section-emptied case: legal, and it must
+    // not be mistaken for disposal by the guard above.
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+
+    const handle = ctx.llm.registerAdapter(['m1'], new ScriptedAdapter(SCRIPT))
+    handle.replace([])
+    expect(ctx.llm.listProviders()).toEqual([])
+    handle.replace(['m2'])
+    expect(ctx.llm.listProviders()).toEqual([{ id: 'm2', name: 'm2' }])
+    handle()
+    expect(ctx.llm.listProviders()).toEqual([])
+  })
 })
diff --git a/packages/llm/llm/tests/topology.spec.ts b/packages/llm/llm/tests/topology.spec.ts
new file mode 100644
index 0000000000..f07b33af7d
--- /dev/null
+++ b/packages/llm/llm/tests/topology.spec.ts
@@ -0,0 +1,181 @@
+import { describe, expect, it, vi } from 'vitest'
+import { Context } from 'cordis'
+import LlmService, { LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
+import type { GenerateOptions, LlmConfigurableProvider, StreamChunk } from '@deepseek-ai/dsh-llm'
+
+class NoopAdapter extends LlmAdapter {
+
+  async * stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
+    throw new Error('not exercised')
+  }
+}
+
+async function setup(): Promise<Context> {
+  const ctx = new Context()
+  await ctx.plugin(LlmService)
+  return ctx
+}
+
+function entry(overrides: Partial<LlmConfigurableProvider> = {}): LlmConfigurableProvider {
+  return {
+    provider: 'openai',
+    displayName: 'OpenAI',
+    settingsNs: 'llm-pi-ai',
+    settingsPath: ['providers', 'openai'],
+    ...overrides,
+  }
+}
+
+describe('llm/adapters-updated', () => {
+  it('fires at both adapter registration commit points with the registry already readable', async () => {
+    const ctx = await setup()
+    const observed: string[][] = []
+    ctx.on('llm/adapters-updated', () => {
+      observed.push(ctx.llm.listProviders().map(provider => provider.id))
+    })
+    const dispose = ctx.llm.registerAdapter(['a', 'b'], new NoopAdapter())
+    expect(observed).toEqual([['a', 'b']])
+    dispose()
+    expect(observed).toEqual([['a', 'b'], []])
+  })
+
+  it('contains a throwing listener without vetoing registration or starving later listeners', async () => {
+    const ctx = await setup()
+    const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => undefined)
+    const later = vi.fn()
+    ctx.on('llm/adapters-updated', () => {
+      throw new Error('broken observer')
+    })
+    ctx.on('llm/adapters-updated', later)
+    ctx.llm.registerAdapter(['a'], new NoopAdapter())
+    expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['a'])
+    expect(later).toHaveBeenCalledTimes(1)
+    expect(warn).toHaveBeenCalledWith('llm: an llm/adapters-updated listener failed')
+  })
+
+  it('contains an ASYNC listener rejection instead of leaving it unhandled', async () => {
+    // An emit listener may be an async function; its rejection cannot reach
+    // the synchronous catch, so an uncontained one escapes the process as an
+    // unhandled rejection rather than a warned observer failure.
+    const ctx = await setup()
+    const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => undefined)
+    const unhandled = vi.fn()
+    process.on('unhandledRejection', unhandled)
+    try {
+      // Typed as returning unknown so the listener is not a Promise-returning
+      // function type: the point is exactly that an async one may slip in.
+      const rejecting = (): unknown => Promise.reject(new Error('async observer'))
+      ctx.on('llm/adapters-updated', rejecting)
+      ctx.llm.registerAdapter(['a'], new NoopAdapter())
+      expect(ctx.llm.listProviders().map(provider => provider.id)).toEqual(['a'])
+      await new Promise(resolve => setTimeout(resolve, 10))
+      expect(unhandled).not.toHaveBeenCalled()
+      expect(warn).toHaveBeenCalledWith('llm: an llm/adapters-updated listener failed')
+    } finally {
+      process.off('unhandledRejection', unhandled)
+    }
+  })
+
+  it('replaces a route set in one event, never publishing an empty registry between the two', async () => {
+    // The retry-policy swap in llm-deepseek: disposing and re-registering
+    // would let an observer see the provider disappear and come back.
+    const ctx = await setup()
+    const observed: string[][] = []
+    const registration = ctx.llm.registerAdapter(['a'], new NoopAdapter())
+    ctx.on('llm/adapters-updated', () => {
+      observed.push(ctx.llm.listProviders().map(provider => provider.id))
+    })
+    registration.replace(['a'])
+    expect(observed).toEqual([['a']])
+  })
+
+  it('rethrows the first INVARIANT-coded listener failure after notifying the rest', async () => {
+    const ctx = await setup()
+    const later = vi.fn()
+    ctx.on('llm/adapters-updated', () => {
+      throw Object.assign(new Error('registry incoherent'), { code: 'INVARIANT' })
+    })
+    ctx.on('llm/adapters-updated', later)
+    expect(() => ctx.llm.registerAdapter(['a'], new NoopAdapter())).toThrow('registry incoherent')
+    expect(later).toHaveBeenCalledTimes(1)
+  })
+})
+
+describe('configurable-provider directory', () => {
+  it('registers entries, lists detached copies in order, and fires the topology event', async () => {
+    const ctx = await setup()
+    const events = vi.fn()
+    ctx.on('llm/adapters-updated', events)
+    ctx.llm.registerConfigurableProviders([
+      entry({ provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [] }),
+      entry(),
+    ])
+    expect(events).toHaveBeenCalledTimes(1)
+    const listed = ctx.llm.listConfigurableProviders()
+    expect(listed).toEqual([
+      { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [] },
+      { provider: 'openai', displayName: 'OpenAI', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'] },
+    ])
+    listed[0]!.displayName = 'mutated'
+    ;(listed[1]!.settingsPath as string[]).push('mutated')
+    expect(ctx.llm.listConfigurableProviders()[0]!.displayName).toBe('DeepSeek')
+    expect(ctx.llm.listConfigurableProviders()[1]!.settingsPath).toEqual(['providers', 'openai'])
+  })
+
+  it('detaches stored entries from caller-owned objects', async () => {
+    const ctx = await setup()
+    const source = entry()
+    ctx.llm.registerConfigurableProviders([source])
+    source.displayName = 'mutated'
+    expect(ctx.llm.listConfigurableProviders()[0]!.displayName).toBe('OpenAI')
+  })
+
+  it('withdraws every entry when the registration disposes', async () => {
+    const ctx = await setup()
+    const dispose = ctx.llm.registerConfigurableProviders([entry()])
+    const events = vi.fn()
+    ctx.on('llm/adapters-updated', events)
+    dispose()
+    expect(ctx.llm.listConfigurableProviders()).toEqual([])
+    expect(events).toHaveBeenCalledTimes(1)
+  })
+
+  it('withdraws entries when the contributing fiber disposes', async () => {
+    const ctx = await setup()
+    const fiber = await ctx.plugin({
+      inject: ['llm'],
+      apply: (child: Context) => {
+        child.llm.registerConfigurableProviders([entry()])
+      },
+    })
+    expect(ctx.llm.listConfigurableProviders()).toHaveLength(1)
+    await fiber.dispose()
+    expect(ctx.llm.listConfigurableProviders()).toEqual([])
+  })
+
+  it('rejects an empty registration', async () => {
+    const ctx = await setup()
+    expect(() => ctx.llm.registerConfigurableProviders([])).toThrow(LlmError)
+    expect(() => ctx.llm.registerConfigurableProviders([])).toThrow(/at least one provider/)
+  })
+
+  it.each([
+    [entry({ provider: '' }), /non-empty provider/],
+    [entry({ displayName: '' }), /non-empty provider/],
+    [entry({ settingsNs: '' }), /non-empty provider/],
+    [entry({ settingsPath: ['providers', ''] }), /empty settingsPath segment/],
+  ])('rejects invalid entries all-or-nothing', async (invalid, message) => {
+    const ctx = await setup()
+    expect(() => ctx.llm.registerConfigurableProviders([entry({ provider: 'valid-first' }), invalid])).toThrow(message)
+    expect(ctx.llm.listConfigurableProviders()).toEqual([])
+  })
+
+  it('rejects duplicates within one registration and across registrations', async () => {
+    const ctx = await setup()
+    expect(() => ctx.llm.registerConfigurableProviders([entry(), entry()])).toThrow(/already declared/)
+    ctx.llm.registerConfigurableProviders([entry()])
+    expect(() => ctx.llm.registerConfigurableProviders([entry({ displayName: 'Other' }), entry({ provider: 'unseen' })]))
+      .toThrow(/already declared/)
+    expect(ctx.llm.listConfigurableProviders()).toHaveLength(1)
+  })
+})
diff --git a/packages/sdk/create-sdk/src/args.ts b/packages/sdk/create-sdk/src/args.ts
index 2b156f7fb5..0f1ba0d3a5 100644
--- a/packages/sdk/create-sdk/src/args.ts
+++ b/packages/sdk/create-sdk/src/args.ts
@@ -11,7 +11,7 @@ import type { PackageManagerName, RunInterface } from '@deepseek-ai/dsh-helper'
 export interface CreateArgs {
   directory?: string
   description?: string
-  provider?: 'deepseek' | 'custom'
+  provider?: 'deepseek-official' | 'custom'
   baseURL?: string
   apiKey?: string
   model?: string
@@ -27,7 +27,7 @@ export interface CreateArgs {
 
 interface CommanderCreateOptions {
   description?: string
-  provider?: 'deepseek' | 'custom'
+  provider?: 'deepseek-official' | 'custom'
   baseUrl?: string
   apiKey?: string
   model?: string
@@ -57,7 +57,7 @@ function createProgram(): Command {
     .argument('[directory]')
     .option('-h, --help')
     .option('--description <text>')
-    .addOption(new Option('--provider <name>').choices(['deepseek', 'custom']))
+    .addOption(new Option('--provider <name>').choices(['deepseek-official', 'custom']))
     .option('--base-url <url>')
     .option('--api-key <key>')
     .option('--model <name>')
diff --git a/packages/sdk/create-sdk/src/create-questions.ts b/packages/sdk/create-sdk/src/create-questions.ts
index 236385e45c..a45d46d503 100644
--- a/packages/sdk/create-sdk/src/create-questions.ts
+++ b/packages/sdk/create-sdk/src/create-questions.ts
@@ -24,7 +24,7 @@ export interface ProjectAnswers {
   directory: string
   name: string
   description: string
-  provider: 'deepseek' | 'custom'
+  provider: 'deepseek-official' | 'custom'
   baseURL: string
   apiKey: string
   model: string
@@ -142,14 +142,14 @@ const PROJECT_QUESTION_STEPS: readonly WizardStep<ProjectAnswerState>[] = [
     apply: (state, value) => { state.description = value },
   }),
   questionStep({
-    question: () => new SelectQuestion<'deepseek' | 'custom'>({
+    question: () => new SelectQuestion<'deepseek-official' | 'custom'>({
       id: 'provider',
       message: 'Model provider',
       options: [
-        { value: 'deepseek', label: 'DeepSeek' },
+        { value: 'deepseek-official', label: 'DeepSeek' },
         { value: 'custom', label: 'Custom endpoint (pi-ai)' },
       ],
-      initialValue: 'deepseek',
+      initialValue: 'deepseek-official',
     }),
     prefilled: state => state.args.provider,
     apply: (state, value) => { state.provider = value },
diff --git a/packages/sdk/create-sdk/src/headless.ts b/packages/sdk/create-sdk/src/headless.ts
index 164405e14f..9210f12fc1 100644
--- a/packages/sdk/create-sdk/src/headless.ts
+++ b/packages/sdk/create-sdk/src/headless.ts
@@ -18,7 +18,7 @@ import type { CreateArgs } from './args.ts'
 interface HeadlessCreateSpec {
   directory?: string
   description?: string
-  provider?: 'deepseek' | 'custom'
+  provider?: 'deepseek-official' | 'custom'
   baseURL?: string
   apiKey?: string
   model?: string
diff --git a/packages/sdk/create-sdk/src/templates/assets/usage.txt.tpl b/packages/sdk/create-sdk/src/templates/assets/usage.txt.tpl
index 1842571cdd..8972c1c7df 100644
--- a/packages/sdk/create-sdk/src/templates/assets/usage.txt.tpl
+++ b/packages/sdk/create-sdk/src/templates/assets/usage.txt.tpl
@@ -2,7 +2,7 @@ Usage: create-sdk [directory] [options]
 
 Options:
   --description <text>
-  --provider <deepseek|custom>
+  --provider <deepseek-official|custom>
   --base-url <url>
   --api-key <key>
   --model <name>
diff --git a/packages/sdk/create-sdk/tests/create.snapshot.ts b/packages/sdk/create-sdk/tests/create.snapshot.ts
index 941c8cbb7f..db60939050 100644
--- a/packages/sdk/create-sdk/tests/create.snapshot.ts
+++ b/packages/sdk/create-sdk/tests/create.snapshot.ts
@@ -87,7 +87,7 @@ describe.skipIf(process.platform === 'win32')('create-sdk terminal contract', ()
       'my-agent',
       'my-agent',
       'Snapshot agent',
-      'deepseek',
+      'deepseek-official',
       'secret-key',
       'acp',
       [
@@ -166,7 +166,7 @@ describe.skipIf(process.platform === 'win32')('create-sdk terminal contract', ()
             "message": "Project description",
           },
           {
-            "initialValue": "deepseek",
+            "initialValue": "deepseek-official",
             "kind": "select",
             "message": "Model provider",
             "options": [
@@ -330,7 +330,7 @@ describe.skipIf(process.platform === 'win32')('create-sdk terminal contract', ()
             {
               "id": "provider",
               "options": [
-                "deepseek",
+                "deepseek-official",
               ],
             },
             {
diff --git a/packages/sdk/create-sdk/tests/create.spec.ts b/packages/sdk/create-sdk/tests/create.spec.ts
index f6dc8e1709..b3ec9f0909 100644
--- a/packages/sdk/create-sdk/tests/create.spec.ts
+++ b/packages/sdk/create-sdk/tests/create.spec.ts
@@ -131,13 +131,13 @@ afterEach(async () => {
 describe('create arguments', () => {
   it('parses public options and the private repository link mode', () => {
     expect(parseCreateArgs([
-      'agent', '--description=demo', '--provider', 'deepseek', '--base-url=https://api.example',
+      'agent', '--description=demo', '--provider', 'deepseek-official', '--base-url=https://api.example',
       '--api-key', 'key', '--model=m', '--interface', 'acp', '--pm=pnpm', '--no-install',
       '--link-workspace',
     ])).toEqual({
       directory: 'agent',
       description: 'demo',
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       baseURL: 'https://api.example',
       apiKey: 'key',
       model: 'm',
@@ -205,7 +205,7 @@ describe('CreateWizard and scaffolder', () => {
     const args = parseCreateArgs([
       'my-agent',
       '--description=demo',
-      '--provider=deepseek',
+      '--provider=deepseek-official',
       '--api-key=deepseek-key',
       '--model=deepseek-v4-flash',
       '--interface=tui',
@@ -246,7 +246,7 @@ describe('CreateWizard and scaffolder', () => {
     ]
     const resolved = await new CreateWizard({
       args: parseCreateArgs([
-        'my-agent', '--description=demo', '--provider=deepseek', '--api-key=deepseek-key',
+        'my-agent', '--description=demo', '--provider=deepseek-official', '--api-key=deepseek-key',
         '--model=deepseek-v4-flash', '--interface=tui', '--pm=npm', '--no-install',
       ]),
       port: new HeadlessPromptPort(),
@@ -274,7 +274,7 @@ describe('CreateWizard and scaffolder', () => {
     ] as unknown as FeatureSelection[]
     await expect(new CreateWizard({
       args: parseCreateArgs([
-        'my-agent', '--description=demo', '--provider=deepseek', '--api-key=k',
+        'my-agent', '--description=demo', '--provider=deepseek-official', '--api-key=k',
         '--model=m', '--interface=tui', '--pm=npm', '--no-install',
       ]),
       port: new HeadlessPromptPort(),
@@ -295,7 +295,7 @@ describe('CreateWizard and scaffolder', () => {
       packageManager: new NpmPackageManager('10.0.0'),
       releaseVersion: '0.0.1',
       features: [
-        { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'key' } },
+        { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'key' } },
         { id: featureId('bash'), options: ['local'] },
         { id: featureId('app'), options: ['embed'] },
         { id: featureId('persistence'), options: ['jsonl'] },
@@ -346,7 +346,7 @@ describe('CreateWizard and scaffolder', () => {
     ])
     const resolved = await new CreateWizard({
       args: parseCreateArgs([
-        'workflow-agent', '--description=test', '--provider=deepseek', '--api-key=key',
+        'workflow-agent', '--description=test', '--provider=deepseek-official', '--api-key=key',
         '--interface=embed', '--pm=npm', '--no-install',
       ]),
       port,
@@ -371,7 +371,7 @@ describe('CreateWizard and scaffolder', () => {
     ])
     const resolved = await new CreateWizard({
       args: parseCreateArgs([
-        'empty-key-agent', '--description=test', '--provider=deepseek',
+        'empty-key-agent', '--description=test', '--provider=deepseek-official',
         '--interface=embed', '--pm=npm', '--no-install',
       ]),
       port,
@@ -398,7 +398,7 @@ describe('CreateWizard and scaffolder', () => {
       'embed',
       [
         { value: featureId('persistence'), choices: ['jsonl'] },
-        { value: featureId('web'), choices: ['deepseek'] },
+        { value: featureId('web'), choices: ['deepseek-official'] },
       ],
       true,
       'none',
@@ -426,14 +426,14 @@ describe('CreateWizard and scaffolder', () => {
       'agent',
       [
         { value: featureId('persistence'), choices: ['jsonl'] },
-        { value: featureId('web'), choices: ['deepseek'] },
+        { value: featureId('web'), choices: ['deepseek-official'] },
         { value: featureId('timeout-policy'), choices: ['default'] },
       ],
       'none',
     ])
     const resolved = await new CreateWizard({
       args: parseCreateArgs([
-        'agent', '--description=test', '--provider=deepseek', '--api-key=key',
+        'agent', '--description=test', '--provider=deepseek-official', '--api-key=key',
         '--interface=embed', '--pm=npm', '--no-install',
       ]),
       port,
@@ -451,7 +451,7 @@ describe('CreateWizard and scaffolder', () => {
     ])
     const resolved = await new CreateWizard({
       args: parseCreateArgs([
-        name, '--description=test', '--provider=deepseek', '--api-key=key',
+        name, '--description=test', '--provider=deepseek-official', '--api-key=key',
         '--interface=embed', '--pm=npm', '--no-install',
       ]),
       port,
@@ -467,7 +467,7 @@ describe('CreateWizard and scaffolder', () => {
 
 describe('create command composition', () => {
   const argv = (directory: string, install: boolean): string[] => [
-    directory, '--description=test', '--provider=deepseek', '--api-key=key',
+    directory, '--description=test', '--provider=deepseek-official', '--api-key=key',
     '--interface=embed', '--pm=npm', install ? '--install' : '--no-install',
   ]
 
@@ -490,7 +490,7 @@ describe('create command composition', () => {
     const root = await mkdtemp(join(tmpdir(), 'create-headless-cmd-'))
     temporary.push(root)
     const spec = JSON.stringify({
-      directory: 'agent', description: 'test', provider: 'deepseek', apiKey: 'key',
+      directory: 'agent', description: 'test', provider: 'deepseek-official', apiKey: 'key',
       model: 'deepseek-v4-flash', interface: 'embed', pm: 'npm', install: false,
       features: [{ id: 'persistence', options: ['jsonl'] }],
     })
@@ -510,7 +510,7 @@ describe('create command composition', () => {
     const ok = commandContext(root)
     ok.stdin.isTTY = false
     ok.stdout.isTTY = false
-    const okSpec = JSON.stringify({ ...base, directory: 'done-agent', provider: 'deepseek', apiKey: 'key', features: [] })
+    const okSpec = JSON.stringify({ ...base, directory: 'done-agent', provider: 'deepseek-official', apiKey: 'key', features: [] })
     await expect(runCreateCommand(['--config-json', okSpec, '--json'], ok)).resolves.toBe(0)
     expect(ok.readStdout()).toContain('{"type":"done"}')
     // stdout stays pure NDJSON: every line parses, human progress goes to stderr
@@ -573,7 +573,7 @@ describe('create command composition', () => {
     expect(install).toHaveBeenCalledOnce()
     expect(build).toHaveBeenCalledOnce()
     const spec = JSON.stringify({
-      directory: 'json-agent', description: 'test', provider: 'deepseek', apiKey: 'key',
+      directory: 'json-agent', description: 'test', provider: 'deepseek-official', apiKey: 'key',
       model: 'deepseek-v4-flash', interface: 'embed', pm: 'npm', install: true, features: [],
     })
     const json = commandContext(root)
diff --git a/packages/sdk/create-sdk/tests/link-workspace.e2e.ts b/packages/sdk/create-sdk/tests/link-workspace.e2e.ts
index 7d1944614d..b7739acc16 100644
--- a/packages/sdk/create-sdk/tests/link-workspace.e2e.ts
+++ b/packages/sdk/create-sdk/tests/link-workspace.e2e.ts
@@ -64,7 +64,7 @@ describe.skipIf(!existsSync(builtScripts))('live-linked generated projects', ()
         releaseVersion: '0.0.1',
         linkWorkspaceRoot: repoRoot,
         features: [
-          { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'test-key' } },
+          { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'test-key' } },
           { id: featureId('bash'), options: ['local'] },
           { id: featureId('app'), options: ['embed'] },
           { id: featureId('persistence'), options: ['jsonl'] },
diff --git a/packages/sdk/helper/src/features/builtin/index.ts b/packages/sdk/helper/src/features/builtin/index.ts
index 27ba0aa581..09fe8eb5b7 100644
--- a/packages/sdk/helper/src/features/builtin/index.ts
+++ b/packages/sdk/helper/src/features/builtin/index.ts
@@ -154,7 +154,7 @@ config:
       ],
       options: [
         {
-          id: 'deepseek',
+          id: 'deepseek-official',
           label: 'DeepSeek search',
           default: true,
           markers: [{ id: 'web-search-deepseek', name: '@deepseek-ai/dsh-web-search-deepseek' }],
diff --git a/packages/sdk/helper/src/features/builtin/provider.ts b/packages/sdk/helper/src/features/builtin/provider.ts
index ba54bdc641..94ea8a9679 100644
--- a/packages/sdk/helper/src/features/builtin/provider.ts
+++ b/packages/sdk/helper/src/features/builtin/provider.ts
@@ -20,7 +20,7 @@ const DEFAULT_MODEL = 'deepseek-v4-flash'
 const API_KEY_COMMENT = 'Required before start; an empty value makes provider startup fail.'
 
 class DeepSeekOption extends FeatureOption {
-  override readonly id = 'deepseek'
+  override readonly id = 'deepseek-official'
   override readonly label = 'DeepSeek'
   override readonly secrets = [{
     id: 'apiKey',
@@ -76,7 +76,7 @@ export class ProviderFeature extends ExclusiveOptionFeature {
 
   /** Prefer the direct-fetch adapter and its public endpoint defaults. */
   override defaultOptions(): readonly string[] {
-    return ['deepseek']
+    return ['deepseek-official']
   }
 
   /** Recover literal endpoint overrides from either provider entry. */
diff --git a/packages/sdk/helper/tests/project.spec.ts b/packages/sdk/helper/tests/project.spec.ts
index 3a8c3b3158..648ec11428 100644
--- a/packages/sdk/helper/tests/project.spec.ts
+++ b/packages/sdk/helper/tests/project.spec.ts
@@ -61,7 +61,7 @@ function request(
     packageManager: new NpmPackageManager('10.0.0'),
     releaseVersion: '0.0.1',
     features: [
-      selection('provider', ['deepseek'], { apiKey: 'test-key' }),
+      selection('provider', ['deepseek-official'], { apiKey: 'test-key' }),
       selection('bash', [bash]),
       selection('app', [app]),
       selection('persistence', ['jsonl']),
@@ -344,7 +344,7 @@ describe('SdkProject and ProjectEditSession', () => {
     const edit = project.edit(registry)
     expect(edit.inspections()).not.toHaveLength(0)
     const todo = registry.get(featureId('todo'))
-    edit.configureFeature(registry.get(featureId('web')), selection('web', ['deepseek']))
+    edit.configureFeature(registry.get(featureId('web')), selection('web', ['deepseek-official']))
     edit.disableFeature(todo)
     edit.configureFeature(todo, selection('todo', ['default']))
     edit.enableFeature(todo)
@@ -598,7 +598,7 @@ describe('SdkProject and ProjectEditSession', () => {
     expect(installation.diagnostics).toContain('missing package.json dependencies entry @deepseek-ai/dsh-llm-deepseek')
     const partialEdit = partial.edit(createBuiltinRegistry(partial.profile))
     const provider = createBuiltinRegistry(partial.profile).get(featureId('provider'))
-    expect(() => { partialEdit.configureFeature(provider, selection('provider', ['deepseek'])) }).toThrow('inconsistent')
+    expect(() => { partialEdit.configureFeature(provider, selection('provider', ['deepseek-official'])) }).toThrow('inconsistent')
     expect(() => { partialEdit.enableFeature(provider) }).toThrow('inconsistent')
     expect(() => { partialEdit.disableFeature(provider) }).toThrow('required feature')
   })
@@ -615,7 +615,7 @@ describe('SdkProject and ProjectEditSession', () => {
     const edit = project.edit(builtin)
     const web = builtin.get(featureId('web'))
     expect(() => { edit.disableFeature(web) }).toThrow('inconsistent')
-    expect(() => { edit.installFeature(web, selection('web', ['deepseek'])) }).toThrow('inconsistent')
+    expect(() => { edit.installFeature(web, selection('web', ['deepseek-official'])) }).toThrow('inconsistent')
 
     class RequiresWeb extends FixedFeature {
       override readonly id = featureId('requires-web')
@@ -656,7 +656,7 @@ describe('SdkProject and ProjectEditSession', () => {
     const project = await createCommitted([selection('web', ['exa'], { apiKey: 'exa' })])
     const registry = createBuiltinRegistry(project.profile)
     const edit = project.edit(registry)
-    edit.configureFeature(registry.get(featureId('web')), selection('web', ['deepseek']))
+    edit.configureFeature(registry.get(featureId('web')), selection('web', ['deepseek-official']))
     expect(edit.readEnvironment('.env.example', 'EXA_API_KEY')).toBeUndefined()
   })
 
@@ -676,7 +676,7 @@ describe('SdkProject and ProjectEditSession', () => {
     const edit = reopened.edit(registry)
     edit.configureFeature(
       registry.get(featureId('provider')),
-      selection('provider', ['deepseek'], { apiKey: 'replacement' }),
+      selection('provider', ['deepseek-official'], { apiKey: 'replacement' }),
     )
     edit.installFeature(registry.get(featureId('web')), selection('web', ['exa'], { apiKey: 'exa-key' }))
     const withExa = (await edit.commit()).project
@@ -686,7 +686,7 @@ describe('SdkProject and ProjectEditSession', () => {
     }
     const nextRegistry = createBuiltinRegistry(withExa.profile)
     const remove = withExa.edit(nextRegistry)
-    remove.configureFeature(nextRegistry.get(featureId('web')), selection('web', ['deepseek']))
+    remove.configureFeature(nextRegistry.get(featureId('web')), selection('web', ['deepseek-official']))
     await remove.commit()
     expect(await readFile(join(withExa.root, '.env'), 'utf8')).toBe(`${original}EXA_API_KEY=exa-key\n`)
   })
@@ -936,12 +936,12 @@ describe('extension points', () => {
     expect(spineAgentLoop?.validateConfig?.({ agents: 'main' })).toEqual(['agents must be an array'])
     expect(spineAgentLoop?.validateConfig?.({ agents: ['main'] })).toEqual(['agents must be empty'])
     expect(spineAgentLoop?.validateConfig?.({ agents: [] })).toEqual([])
-    expect(builtins.get(featureId('provider')).defaultOptions(profile)).toEqual(['deepseek'])
+    expect(builtins.get(featureId('provider')).defaultOptions(profile)).toEqual(['deepseek-official'])
     expect(() => builtins.get(featureId('provider')).contribution({
       id: featureId('provider'), options: ['custom'], values: { baseURL: 1 },
     }, profile)).toThrow('baseURL must be a string')
     const alternateModel = builtins.get(featureId('provider')).contribution({
-      id: featureId('provider'), options: ['deepseek'],
+      id: featureId('provider'), options: ['deepseek-official'],
     }, { ...profile, runtime: { model: 'other' } }).resources
       .find(resource => resource.kind === 'cordis-config-entry')
     expect(alternateModel?.entry.config?.models).toEqual(['other'])
diff --git a/packages/sdk/helper/tests/questions.spec.ts b/packages/sdk/helper/tests/questions.spec.ts
index dc9e734ac5..e4ac919f8d 100644
--- a/packages/sdk/helper/tests/questions.spec.ts
+++ b/packages/sdk/helper/tests/questions.spec.ts
@@ -383,7 +383,7 @@ describe('feature configurator', () => {
 
   it('shares exclusive, multiple, fixed, and secret behavior', async () => {
     const registry = createBuiltinRegistry(profile)
-    const port = new QueuePromptPort(['sqlite', ['spawn', 'fork'], 'deepseek', 'new-key'])
+    const port = new QueuePromptPort(['sqlite', ['spawn', 'fork'], 'deepseek-official', 'new-key'])
     const configurator = new FeatureConfigurator(port)
     await expect(configurator.configure(registry.get(featureId('persistence')), profile)).resolves.toMatchObject({
       options: ['sqlite'],
@@ -394,7 +394,7 @@ describe('feature configurator', () => {
     await expect(configurator.configure(
       registry.get(featureId('provider')),
       profile,
-      { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'old-key' } },
+      { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'old-key' } },
     )).resolves.toMatchObject({ secrets: { apiKey: 'new-key' } })
     expect(port.requests).toEqual([
       'Choose durable session storage',
@@ -412,13 +412,13 @@ describe('feature configurator', () => {
     })
     const requiredSecret = new FeatureConfigurator(new QueuePromptPort([]))
     await expect(requiredSecret.configure(
-      registry.get(featureId('provider')), profile, undefined, ['deepseek'], { apiKey: '' },
+      registry.get(featureId('provider')), profile, undefined, ['deepseek-official'], { apiKey: '' },
     )).rejects.toThrow('required')
-    const keep = new FeatureConfigurator(new QueuePromptPort(['deepseek', '']))
+    const keep = new FeatureConfigurator(new QueuePromptPort(['deepseek-official', '']))
     await expect(keep.configure(
       registry.get(featureId('provider')),
       profile,
-      { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'old' } },
+      { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'old' } },
     )).resolves.toMatchObject({ secrets: { apiKey: 'old' } })
     const custom = registry.get(featureId('provider'))
     await expect(new FeatureConfigurator(new QueuePromptPort(['custom'])).configure(
diff --git a/packages/sdk/scripts/package.json b/packages/sdk/scripts/package.json
index 63afe96d08..e4bb35491c 100644
--- a/packages/sdk/scripts/package.json
+++ b/packages/sdk/scripts/package.json
@@ -39,7 +39,7 @@
     "@deepseek-ai/dsh-helper": "workspace:^",
     "@deepseek-ai/dsh-telemetry": "workspace:^",
     "commander": "^15.0.0",
-    "node-addon-require-builtin": "^0.1.0"
+    "node-addon-require-builtin": "^0.1.3"
   },
   "peerDependencies": {
     "@deepseek-ai/dsh-app-boot": "workspace:^",
diff --git a/packages/sdk/scripts/tests/__snapshots__/config.snapshot.ts.snap b/packages/sdk/scripts/tests/__snapshots__/config.snapshot.ts.snap
index f3d6867225..d4ce43908a 100644
--- a/packages/sdk/scripts/tests/__snapshots__/config.snapshot.ts.snap
+++ b/packages/sdk/scripts/tests/__snapshots__/config.snapshot.ts.snap
@@ -34,7 +34,7 @@ Change file: package.json
             {
               "default": true,
               "label": "DeepSeek",
-              "value": "deepseek",
+              "value": "deepseek-official",
             },
             {
               "default": false,
@@ -173,7 +173,7 @@ Change file: package.json
             {
               "default": true,
               "label": "DeepSeek search",
-              "value": "deepseek",
+              "value": "deepseek-official",
             },
             {
               "default": false,
diff --git a/packages/sdk/scripts/tests/config.snapshot.ts b/packages/sdk/scripts/tests/config.snapshot.ts
index e6047c8562..e0e755d517 100644
--- a/packages/sdk/scripts/tests/config.snapshot.ts
+++ b/packages/sdk/scripts/tests/config.snapshot.ts
@@ -92,7 +92,7 @@ async function baseProject(): Promise<SdkProject> {
     packageManager: new NpmPackageManager('10.0.0'),
     releaseVersion: '0.0.1',
     features: [
-      { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'key' } },
+      { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'key' } },
       { id: featureId('bash'), options: ['local'] },
       { id: featureId('app'), options: ['tui'] },
       { id: featureId('persistence'), options: ['jsonl'] },
diff --git a/packages/sdk/scripts/tests/scripts.spec.ts b/packages/sdk/scripts/tests/scripts.spec.ts
index 74c450025f..d9f1f6f936 100644
--- a/packages/sdk/scripts/tests/scripts.spec.ts
+++ b/packages/sdk/scripts/tests/scripts.spec.ts
@@ -94,7 +94,7 @@ function creation(
     packageManager: new NpmPackageManager('10.0.0'),
     releaseVersion: '0.0.1',
     features: [
-      { id: featureId('provider'), options: ['deepseek'], secrets: { apiKey: 'key' } },
+      { id: featureId('provider'), options: ['deepseek-official'], secrets: { apiKey: 'key' } },
       { id: featureId('bash'), options: ['local'] },
       { id: featureId('app'), options: [app] },
       { id: featureId('persistence'), options: ['jsonl'] },
@@ -550,7 +550,7 @@ describe('ConfigWorkflow', () => {
     const output = outputBuffer()
     const workflow = new ConfigWorkflow(new QueuePort([
       [
-        { value: 'feature:provider', choices: ['deepseek'] },
+        { value: 'feature:provider', choices: ['deepseek-official'] },
         { value: 'feature:app', choices: ['acp'] },
         { value: 'feature:persistence', choices: ['jsonl'] },
         { value: 'feature:ask-user', choices: ['default'] },
diff --git a/packages/sdk/sdk-client/README.i18n.yaml b/packages/sdk/sdk-client/README.i18n.yaml
index c0bf2706ff..27bd88cefd 100644
--- a/packages/sdk/sdk-client/README.i18n.yaml
+++ b/packages/sdk/sdk-client/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/sdk/sdk-client/README.md
-README.md: 3ac4de540401f6f40dab3e84f7005f91d024aee8
-README.zh.md: 95fb6b2887a7bc748a610f7fedae4be1aa2af623
+README.md: eb0387292fb0093b3ed9360e8aec087201b611f0
+README.zh.md: 3745d2bd3aba72942a0c69b8669ea707bd429188
diff --git a/packages/sdk/sdk-client/README.md b/packages/sdk/sdk-client/README.md
index 3ac4de5404..eb0387292f 100644
--- a/packages/sdk/sdk-client/README.md
+++ b/packages/sdk/sdk-client/README.md
@@ -13,7 +13,7 @@ import { DeepSeekHarness } from '@deepseek-ai/dsh-sdk-client'
 
 await using harness = new DeepSeekHarness({
   launch: { command: 'node', args: ['lib/bin.js', 'cordis.yml'] },
-  provider: 'deepseek',
+  provider: 'deepseek-official',
   model: 'deepseek-v4-flash',
   maxTokens: 49_152,
 })
diff --git a/packages/sdk/sdk-client/README.zh.md b/packages/sdk/sdk-client/README.zh.md
index 95fb6b2887..3745d2bd3a 100644
--- a/packages/sdk/sdk-client/README.zh.md
+++ b/packages/sdk/sdk-client/README.zh.md
@@ -13,7 +13,7 @@ import { DeepSeekHarness } from '@deepseek-ai/dsh-sdk-client'
 
 await using harness = new DeepSeekHarness({
   launch: { command: 'node', args: ['lib/bin.js', 'cordis.yml'] },
-  provider: 'deepseek',
+  provider: 'deepseek-official',
   model: 'deepseek-v4-flash',
   maxTokens: 49_152,
 })
diff --git a/packages/sdk/sdk-client/src/api.ts b/packages/sdk/sdk-client/src/api.ts
index b5cfd12c6b..08f201cf71 100644
--- a/packages/sdk/sdk-client/src/api.ts
+++ b/packages/sdk/sdk-client/src/api.ts
@@ -37,7 +37,7 @@ export class DeepSeekHarness implements AsyncDisposable {
     // process's cwd, but the wire cwd is resolved again inside the child — a
     // relative value would double-resolve (e.g. `worker` → `worker/worker`).
     this.cwd = resolve(options.cwd ?? options.launch.cwd ?? process.cwd())
-    this.provider = options.provider ?? 'deepseek'
+    this.provider = options.provider ?? 'deepseek-official'
     this.model = options.model ?? 'deepseek-v4-flash'
     this.maxTokens = options.maxTokens
   }
diff --git a/packages/sdk/sdk-client/src/types.ts b/packages/sdk/sdk-client/src/types.ts
index ad4998ca13..8f983375c4 100644
--- a/packages/sdk/sdk-client/src/types.ts
+++ b/packages/sdk/sdk-client/src/types.ts
@@ -51,7 +51,7 @@ export interface DeepSeekHarnessOptions {
   launch: HarnessClientOptions
   /** Workspace cwd recorded on every SDK-created session (default: the launch cwd, else `process.cwd()`). */
   cwd?: string
-  /** Provider route for SDK-created agents (default `deepseek`). */
+  /** Provider route for SDK-created agents (default `deepseek-official`). */
   provider?: string
   /** Model for SDK-created agents (default `deepseek-v4-flash`). */
   model?: string
diff --git a/packages/sdk/sdk-protocol/README.i18n.yaml b/packages/sdk/sdk-protocol/README.i18n.yaml
index 7eec4f64dd..b868126d59 100644
--- a/packages/sdk/sdk-protocol/README.i18n.yaml
+++ b/packages/sdk/sdk-protocol/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/sdk/sdk-protocol/README.md
-README.md: 62b26d4a82d358fa4efcb7ab84036e5f4848057f
-README.zh.md: 11677c6119c7da407d95ee38ad9f8f7a552c15de
+README.md: 6dfc749bb0610f2c94e1a23fa395a428e47126bc
+README.zh.md: 2c2284dcdac3029ffaf6cac65e4c1247a2328939
diff --git a/packages/sdk/sdk-protocol/README.md b/packages/sdk/sdk-protocol/README.md
index 62b26d4a82..6dfc749bb0 100644
--- a/packages/sdk/sdk-protocol/README.md
+++ b/packages/sdk/sdk-protocol/README.md
@@ -22,7 +22,7 @@ The shared wire protocol for the DeepSeek Harness SDK runtime: one newline-delim
 | server→client | `subagent.started` | `SubagentStartedNotification` |
 | server→client | `subagent.finished` | `SubagentFinishedNotification` (in-process runs only) |
 
-`HarnessSdkRequestMap` and `HarnessSdkNotificationMap` index these by method name. `InitializeParams.maxTokens` is an optional positive safe integer that caps each conversation-model output for SDK-created agents and their in-process descendants; omission leaves the provider default in control. The notification payload types depend on `SessionEvent` (`dsh-session`), `ContentBlock` (`dsh-llm`), and `SubagentStopReason` (`dsh-subagent`) — the protocol streams full session-log envelopes, so the session vocabulary is part of the wire contract. `serverInfo.name` stays the wire-stable `deepseek-harness-sdk-runtime`.
+`HarnessSdkRequestMap` and `HarnessSdkNotificationMap` index these by method name. `InitializeParams.maxTokens` is an optional positive safe integer that caps each conversation-model output for SDK-created agents and their in-process descendants; omission allows the selected adapter's exact-model default to apply, or otherwise preserves provider behavior. The notification payload types depend on `SessionEvent` (`dsh-session`), `ContentBlock` (`dsh-llm`), and `SubagentStopReason` (`dsh-subagent`) — the protocol streams full session-log envelopes, so the session vocabulary is part of the wire contract. `serverInfo.name` stays the wire-stable `deepseek-harness-sdk-runtime`.
 
 ## Model Experience
 
diff --git a/packages/sdk/sdk-protocol/README.zh.md b/packages/sdk/sdk-protocol/README.zh.md
index 11677c6119..2c2284dcda 100644
--- a/packages/sdk/sdk-protocol/README.zh.md
+++ b/packages/sdk/sdk-protocol/README.zh.md
@@ -22,7 +22,7 @@ DeepSeek Harness SDK 运行时的共享协议格式（wire format）：一个按
 | server→client | `subagent.started` | `SubagentStartedNotification` |
 | server→client | `subagent.finished` | `SubagentFinishedNotification`（仅进程内运行） |
 
-`HarnessSdkRequestMap` 与 `HarnessSdkNotificationMap` 按方法名索引这些类型。`InitializeParams.maxTokens` 是可选的正的安全整数，用于限制 SDK 创建的 agent（智能体）及其进程内后代的每次对话模型输出；省略时由提供方默认值控制。通知载荷类型依赖 `SessionEvent`（`dsh-session`）、`ContentBlock`（`dsh-llm`）与 `SubagentStopReason`（`dsh-subagent`）——协议以完整会话日志封套进行流式传输，因此会话词汇是协议格式契约的一部分。`serverInfo.name` 的协议值固定为 `deepseek-harness-sdk-runtime`。
+`HarnessSdkRequestMap` 与 `HarnessSdkNotificationMap` 按方法名索引这些类型。`InitializeParams.maxTokens` 是可选的正的安全整数，用于限制 SDK 创建的 agent（智能体）及其进程内后代的每次对话模型输出；省略时会应用所选适配器的确切模型默认值，否则提供方行为保持不变。通知载荷类型依赖 `SessionEvent`（`dsh-session`）、`ContentBlock`（`dsh-llm`）与 `SubagentStopReason`（`dsh-subagent`）——协议以完整会话日志封套进行流式传输，因此会话词汇是协议格式契约的一部分。`serverInfo.name` 的协议值固定为 `deepseek-harness-sdk-runtime`。
 
 ## 模型体验
 
diff --git a/packages/session-title/session-title-first-message-llm/tests/provider.e2e.ts b/packages/session-title/session-title-first-message-llm/tests/provider.e2e.ts
index 1268656551..84b108a64f 100644
--- a/packages/session-title/session-title-first-message-llm/tests/provider.e2e.ts
+++ b/packages/session-title/session-title-first-message-llm/tests/provider.e2e.ts
@@ -31,7 +31,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('first-message title provider wit
       maxInputBytes: 4_096,
       maxOutputTokens: 64,
       timeoutMs: 60_000,
-      provider: 'deepseek',
+      provider: 'deepseek-official',
       model: 'deepseek-v4-flash',
     })
     const session = ctx.sessions.create(SessionId('real-title-provider'))
@@ -51,7 +51,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('first-message title provider wit
       source: {
         kind: 'provider',
         provider: 'session-title-first-message-llm',
-        model: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+        model: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
       },
     })
     expect(title?.title.length).toBeGreaterThan(0)
diff --git a/packages/settings/settings-local/package.json b/packages/settings/settings-local/package.json
index aefb1ccd33..0040b65507 100644
--- a/packages/settings/settings-local/package.json
+++ b/packages/settings/settings-local/package.json
@@ -27,6 +27,7 @@
   ],
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-atomic-write": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-paths": "^0.0.1",
     "@deepseek-ai/dsh-settings": "^0.0.1",
@@ -38,6 +39,7 @@
     "yaml": "^2.9.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-atomic-write": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-paths": "workspace:^",
     "@deepseek-ai/dsh-settings": "workspace:^",
diff --git a/packages/settings/settings-local/src/index.ts b/packages/settings/settings-local/src/index.ts
index d0d1497b16..8043e6db45 100644
--- a/packages/settings/settings-local/src/index.ts
+++ b/packages/settings/settings-local/src/index.ts
@@ -10,10 +10,10 @@
 import { Context, Service } from 'cordis'
 import z from 'schemastery'
 import { watch as chokidarWatch } from 'chokidar'
-import { randomBytes } from 'node:crypto'
-import { mkdir, readFile, rename, rm, stat, writeFile } from 'node:fs/promises'
+import { mkdir, readFile } from 'node:fs/promises'
 import { dirname, extname, join, resolve } from 'node:path'
 import { Document, parseDocument } from 'yaml'
+import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
 import { resolveDshHome } from '@deepseek-ai/dsh-paths'
 import { Settings, deepEqualJson, type SettingsNamespace } from '@deepseek-ai/dsh-settings'
 
@@ -96,23 +96,6 @@ function isENOENT(error: unknown): boolean {
   return (error as NodeJS.ErrnoException | null)?.code === 'ENOENT'
 }
 
-/** Whether an exclusive create failed because the path already exists. */
-function isEEXIST(error: unknown): boolean {
-  return (error as NodeJS.ErrnoException | null)?.code === 'EEXIST'
-}
-
-/**
- * Writer-lock protocol constants. These are robustness invariants of the
- * cross-process write protocol, not deployment tunables: a holder rewrites one
- * small document in milliseconds, so contention resolves well inside the
- * retry deadline, and a lock older than the stale age can only belong to a
- * crashed holder.
- */
-const LOCK_RETRY_INITIAL_MS = 20
-const LOCK_RETRY_MAX_MS = 200
-const LOCK_TIMEOUT_MS = 2_000
-const LOCK_STALE_MS = 5_000
-
 /** File-backed settings provider (`settings.yaml`/`.json`). */
 export class SettingsLocal extends Settings {
   static Config: z<Config> = z.object({
@@ -197,8 +180,11 @@ export class SettingsLocal extends Settings {
   }
 
   private async persistSection(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
-    await mkdir(dirname(this.spec.filename), { recursive: true })
-    await this.withWriterLock(async () => {
+    // The writer lock's exclusive create needs the parent to exist before
+    // writeFileAtomic gets its own chance to create it.
+    // 0700: the harness home holds user-private documents.
+    await mkdir(dirname(this.spec.filename), { recursive: true, mode: 0o700 })
+    await withFileLock(this.spec.filename, async () => {
       // Read-modify-write: fold in any on-disk state this process has not
       // observed yet — an external edit still inside the watcher debounce
       // window, a change the watcher missed, or another process's write — so
@@ -209,74 +195,14 @@ export class SettingsLocal extends Settings {
       const output = this.spec.format === 'yaml'
         ? this.renderYaml(ns, section)
         : this.renderJson(ns, section)
-      // Exclusive-create (`wx`) a random-suffix sibling: the open refuses to
-      // follow any planted symlink at a guessable temp path, and the fresh inode
-      // carries owner-only permissions that survive the rename — a document that
-      // may hold personal values is never world-readable and never a symlink.
-      const temp = `${this.spec.filename}.${randomBytes(6).toString('hex')}.tmp`
-      // TODO(settings-atomic-durability): Use a replacement that fsyncs the file
-      // and parent directory and preserves owner-only permissions on Windows.
-      try {
-        await writeFile(temp, output, { mode: 0o600, flag: 'wx' })
-        await rename(temp, this.spec.filename)
-      } catch (error) {
-        await rm(temp, { force: true })
-        throw error
-      }
+      // 0600: a document that may hold personal values is never world-readable.
+      await writeFileAtomic(this.spec.filename, output, { mode: 0o600, dirMode: 0o700 })
       this.text = output
-    })
-  }
-
-  /**
-   * Hold the cross-process writer lock around one read-render-rename cycle.
-   * The lock is a `wx`-created sibling (`<file>.lock`); the rename-based
-   * commit keeps readers lock-free, so only writers contend. A lock older
-   * than {@link LOCK_STALE_MS} is a crashed holder and is broken with a
-   * warning; a live holder past {@link LOCK_TIMEOUT_MS} fails the write.
-   */
-  private async withWriterLock<T>(operation: () => Promise<T>): Promise<T> {
-    const lockPath = `${this.spec.filename}.lock`
-    const deadline = Date.now() + LOCK_TIMEOUT_MS
-    let delay = LOCK_RETRY_INITIAL_MS
-    for (;;) {
-      try {
-        await writeFile(lockPath, `${process.pid}\n`, { mode: 0o600, flag: 'wx' })
-        break
-      } catch (error) {
-        if (!isEEXIST(error)) throw error
-      }
-      const ageMs = await this.lockAgeMs(lockPath)
-      // The holder released between the failed create and the stat: the lock
-      // is free right now, so retry without burning backoff or deadline.
-      if (ageMs === undefined) continue
-      if (ageMs > LOCK_STALE_MS) {
-        // TODO(settings-lock-ownership): Replace age-only takeover with ownership-safe
-        // acquisition and release so a slow writer cannot remove a successor's lock.
+    }, {
+      onStaleBreak: (lockPath) => {
         this.ctx.logger.warn('settings-local: breaking a stale writer lock at %s', lockPath)
-        await rm(lockPath, { force: true })
-        continue
-      }
-      if (Date.now() >= deadline) {
-        throw new Error(`settings-local: timed out waiting for the writer lock at ${lockPath}`)
-      }
-      await new Promise(resolve => setTimeout(resolve, delay))
-      delay = Math.min(delay * 2, LOCK_RETRY_MAX_MS)
-    }
-    try {
-      return await operation()
-    } finally {
-      await rm(lockPath, { force: true })
-    }
-  }
-
-  /** Age of the writer lock, or `undefined` when it vanished after a failed create. */
-  private async lockAgeMs(lockPath: string): Promise<number | undefined> {
-    try {
-      return Date.now() - (await stat(lockPath)).mtimeMs
-    } catch (error) {
-      if (!isENOENT(error)) throw error
-      return undefined
-    }
+      },
+    })
   }
 
   override async* [Service.init](): AsyncGenerator<() => Promise<void> | void, void, void> {
diff --git a/packages/settings/settings-local/tsconfig.json b/packages/settings/settings-local/tsconfig.json
index 67a746c982..cf5b68fc11 100644
--- a/packages/settings/settings-local/tsconfig.json
+++ b/packages/settings/settings-local/tsconfig.json
@@ -17,6 +17,9 @@
     {
       "path": "../../../vendor/schemastery"
     },
+    {
+      "path": "../../util/atomic-write"
+    },
     {
       "path": "../../util/paths"
     },
diff --git a/packages/settings/settings/README.i18n.yaml b/packages/settings/settings/README.i18n.yaml
index 4f03498b06..9f920486d6 100644
--- a/packages/settings/settings/README.i18n.yaml
+++ b/packages/settings/settings/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/settings/settings/README.md
-README.md: ec9f0e09c47015edd8495dac48beb610e0b5cdc5
-README.zh.md: 6d0a760f9b1bbef21881a03933d0fe5b9fc3cd0d
+README.md: 1f1ce07722bfb035746ad5733f90ddabe2d1553b
+README.zh.md: 0d96a0deda3b9d8f6260a1f223eb86cb87781565
diff --git a/packages/settings/settings/README.md b/packages/settings/settings/README.md
index ec9f0e09c4..1f1ce07722 100644
--- a/packages/settings/settings/README.md
+++ b/packages/settings/settings/README.md
@@ -7,10 +7,12 @@ Abstract user-settings seam (`ctx.settings`). One provider holds a raw document
 ## Service API
 
 - `register(ns, schema, { base?, applies? })` — returns the owner `SettingsScope` (`get`/`watch`/`update`). The registration is an effect on the calling plugin's fiber: disposing that fiber removes the namespace and its observers. A stored section the schema rejects fails the registration itself; a duplicate namespace fails loud.
-- `describe()` — one descriptor per namespace (`schema.toJSON()` envelope, resolved value, `applies`) for configuration surfaces.
+- `describe(options?)` — one descriptor per namespace (`schema.toJSON()` envelope, resolved value, detached `base`/`user` layers, `applies`) for configuration surfaces; a field's presence in `user` is what marks it user-overridden. `describe({ redactSecrets: true })` strips `role('secret')` fields from every layer and adds the `secrets` slot list (`{ path, set }`); every wire surface MUST pass it, and the pure `redactSecrets(schema, value)` walker is exported for other wires.
 - `get(ns)` — resolved value, `undefined` while unregistered.
 - `update(ns, patch)` — deep-merges the plain-object patch into the user section only (never the `base`), validates the resolved candidate, persists through the provider, then commits. Patches must be JSON-shaped data: a Date, Map, BigInt, non-finite number, or circular reference rejects with its `$`-rooted path before anything persists (YAML/JSON storage would silently distort such values on reload). Validation failure rejects before anything is persisted; a read-only provider (`writable: false`) rejects every write. Writes to one namespace are serialized in call order.
-- `replace(ns, section)` — sets the user section wholesale: the removal/reset path a merge cannot express (`replace({})` re-inherits `base` and schema defaults).
+- `replace(ns, section)` — sets the user section wholesale: the deliberate reset (`replace({})` re-inherits `base` and schema defaults).
+- `mutate(ns, ops)` — applies ordered `{ op: 'set' | 'unset', path }` edits to the section as it stands when the write reaches the front of the queue. This is the removal path for any caller holding an INCOMPLETE view: a configuration UI reads the redacted descriptor, so rebuilding a section from it and replacing wholesale deletes every secret the wire never returned, while an op names the one field it means.
+- Every write takes an optional `expectedRevision`. Each descriptor carries the namespace's `revision`, a monotonic counter over its RAW section; a write whose expectation no longer matches rejects with `SettingsConflictError` (`code: 'SETTINGS_CONFLICT'`, both revisions attached) instead of overwriting the writer that landed first. The write queue orders writes but cannot by itself tell a fresh writer from one holding a stale snapshot.
 - Resolved values are deep-frozen snapshots. Watchers receive `(next, prev)` after each commit: invocations of one callback run asynchronously, one at a time, in commit order (a slow stale invocation can never apply after a newer one), and failures — sync throws and async rejections alike — are contained. After a watch disposer returns, no further invocation starts (one already queued is skipped); an invocation already started still settles. The `settings/updated` event fans out one listener at a time, so one throwing listener cannot starve the rest; an async listener's rejection is contained and logged, which is why `INVARIANT`-coded failures rethrow only from synchronous listeners.
 - Service teardown refuses new writes and watcher starts, then drains every queued write and every started watcher invocation before disposal completes; a write whose registrant fiber was disposed mid-flight still reaches storage but commits and notifies nobody.
 
@@ -20,7 +22,9 @@ Subclasses implement `writable`, `load()`, and `persist(ns, section)`, and push
 
 ## Events
 
-`settings/updated (ns, next, prev, source)` fires after each commit; `source` is `update` (in-process write) or `provider` (external change). It never fires for a deep-equal resolved value.
+`settings/updated (ns, next, prev, source)` fires after each commit; `source` is `update` (in-process write) or `provider` (external change). It never fires for a deep-equal resolved value — it is the consumer-facing event, and a consumer only cares that its value moved.
+
+`settings/document-updated (ns, revision)` fires whenever the RAW user section changes, whether or not the resolved value did. Configuration surfaces need this one: storing an override equal to the composition base leaves the resolved value alone but changes what the document says (the field is now overridden, not inherited) and moves the revision every open editor is holding. Listener containment matches `settings/updated`.
 
 ## Model Experience
 
@@ -33,5 +37,5 @@ No direct invalidation; a consumer that folds a settings value into the request
 ## Known Limitations and Deferred Work
 
 - **Single user layer** — resolution knows schema defaults, one composition `base`, and one user document; there is no project/managed layering or per-value provenance yet.
+- **`redactSecrets` is not a proven wire boundary** — the walker follows `object`/`dict`/`array`, so a `role('secret')` reached only through a union, intersection, or transform is returned VERBATIM with an empty `secrets` list, and `schema.toJSON()` carries a secret field's `.default(...)` to every client. Neither case is rejected; a schema whose secrets are not reachable through the walked containers must not be registered on a wire-exposed namespace. A fail-closed `describeForWire()` — one that refuses a schema it cannot prove safe, and sanitizes the serialized envelope and error text — is the real answer and is deferred.
 - **Cross-process concurrency is provider-defined** — the seam serializes writes per namespace in-process only; concurrent processes converge by provider behavior (the local file provider read-modify-writes under a writer lock, so namespaces survive concurrent writers and same-namespace conflicts resolve last-write-wins).
-- **No secret-field redaction** — `describe()` returns resolved values verbatim; a wire surface (RPC/UI) must redact `role('secret')` fields before exposure.
diff --git a/packages/settings/settings/README.zh.md b/packages/settings/settings/README.zh.md
index 6d0a760f9b..0d96a0deda 100644
--- a/packages/settings/settings/README.zh.md
+++ b/packages/settings/settings/README.zh.md
@@ -7,10 +7,12 @@
 ## 服务 API
 
 - `register(ns, schema, { base?, applies? })` — 返回 owner 的 `SettingsScope`（`get`/`watch`/`update`）。注册是调用方插件 fiber 上的 effect：dispose 该 fiber 即移除 namespace 及其观察者。schema 拒绝的存量分节会使注册本身失败；重复 namespace 立即报错。
-- `describe()` — 每个 namespace 一条描述（`schema.toJSON()` 信封、解析值、`applies`），供配置界面使用。
+- `describe(options?)` — 每个 namespace 一条描述（`schema.toJSON()` 信封、解析值、分离出的 `base`/`user` 层、`applies`），供配置界面使用；字段出现在 `user` 中即标记其被用户覆盖。`describe({ redactSecrets: true })` 从每一层剥离 `role('secret')` 字段，并附加 `secrets` 槽位列表（`{ path, set }`）；每个 wire 面都必须传入它，纯遍历器 `redactSecrets(schema, value)` 已导出，供其他 wire 使用。
 - `get(ns)` — 解析值；未注册时为 `undefined`。
 - `update(ns, patch)` — 把普通对象 patch 深合并进用户分节（绝不合并进 `base`），校验解析候选值，经 provider 持久化后提交。patch 必须是 JSON 形状的数据：Date、Map、BigInt、非有限数或循环引用会在任何内容持久化前带着以 `$` 为根的路径拒绝（YAML/JSON 存储在重载时会静默扭曲这类值）。校验失败在持久化前拒绝；只读 provider（`writable: false`）拒绝一切写入。同一 namespace 的写入按调用顺序串行。
-- `replace(ns, section)` — 整体替换用户分节：merge 表达不了的删除/重置路径（`replace({})` 重新继承 `base` 与 schema 默认值）。
+- `replace(ns, section)` — 整体替换用户分节：这是刻意的重置（`replace({})` 重新继承 `base` 与 schema 默认值）。
+- `mutate(ns, ops)` — 在写入排到队首那一刻的分节上，按序施加 `{ op: 'set' | 'unset', path }` 编辑。这是任何持有**不完整**视图的调用方的删除路径：配置 UI 读到的是脱敏后的 descriptor，据此重建分节再整体替换，会把 wire 从未回传的每个机密都删掉，而一条 op 只点名它真正要改的那个字段。
+- 每次写入都可携带可选的 `expectedRevision`。每个 descriptor 都带有该 namespace 的 `revision`——一个针对其**原始**分节的单调计数器；期望值不再匹配的写入会以 `SettingsConflictError`（`code: 'SETTINGS_CONFLICT'`，并附上两个 revision）被拒绝，而不是覆盖先落地的那个写方。写队列只保证写入的先后次序，它本身分辨不出一个新写方与一个持有过期快照的写方。
 - 解析值是深冻结快照。每次提交后观察者收到 `(next, prev)`：同一回调的调用异步、逐次、按提交顺序执行（慢的旧调用绝不会覆盖更新的结果），异常——同步抛出与异步拒绝——均被隔离。watch 的 disposer 返回后不再启动新的调用（已排队的那一次会被跳过）；已启动的调用仍会结算。`settings/updated` 事件逐 listener 扇出，一个抛错的 listener 不会饿死其余 listener；异步 listener 的拒绝会被隔离并记入日志，这正是 `INVARIANT` 编码的失败只从同步 listener 重新抛出的原因。
 - 服务卸载先拒绝新写入与观察者调用的启动，再排干全部排队写入与已启动的观察者调用后才完成；registrant fiber 在写入途中被 dispose 时，该写入仍到达存储，但不向任何人提交或通知。
 
@@ -20,7 +22,9 @@
 
 ## 事件
 
-`settings/updated (ns, next, prev, source)` 在每次提交后触发；`source` 为 `update`（进程内写入）或 `provider`（外部变更）。解析值深相等时绝不触发。
+`settings/updated (ns, next, prev, source)` 在每次提交后触发；`source` 为 `update`（进程内写入）或 `provider`（外部变更）。解析值深相等时绝不触发——它面向消费方，而消费方只关心自己的值有没有变。
+
+`settings/document-updated (ns, revision)` 在**原始**用户分节发生变化时触发，无论解析值是否随之改变。配置界面需要的是这一个：存入一个与组合 `base` 相同的覆盖值不会改变解析值，却改变了文档的说法（该字段从继承变成了覆盖），也推进了每个已打开编辑器所持有的 revision。监听器的收容方式与 `settings/updated` 相同。
 
 ## Model Experience
 
@@ -33,5 +37,5 @@
 ## Known Limitations and Deferred Work
 
 - **单一用户层** — 解析只认识 schema 默认值、一个组合 `base` 与一个用户文档；尚无 project/managed 分层或按值溯源。
+- **`redactSecrets` 并非一条可被证明的协议边界**：walker 只跟随 `object`/`dict`/`array`，因此只能经由 union、intersection 或 transform 抵达的 `role('secret')` 会被**原样**返回，且 `secrets` 列表为空；而 `schema.toJSON()` 会把 secret 字段的 `.default(...)` 一并带给每个客户端。这两种情况都不会被拒绝；机密无法经由被遍历的容器抵达的 schema，绝不可注册到暴露于协议的 namespace 上。真正的答案是一个 fail-closed 的 `describeForWire()`——它拒绝自己无法证明安全的 schema，并对序列化信封与错误文本做净化——此项暂缓。
 - **跨进程并发由 provider 定义** — seam 仅在进程内按 namespace 串行化写入；跨进程并发按 provider 行为收敛（本地文件 provider 在写锁下读-改-写，因此 namespace 在并发写入者下不会丢失，同 namespace 冲突按后写胜出解决）。
-- **无 secret 字段脱敏** — `describe()` 原样返回解析值；wire 面（RPC/UI）在暴露前必须对 `role('secret')` 字段脱敏。
diff --git a/packages/settings/settings/src/index.ts b/packages/settings/settings/src/index.ts
index 76c1082f3f..6dbfd688e5 100644
--- a/packages/settings/settings/src/index.ts
+++ b/packages/settings/settings/src/index.ts
@@ -9,6 +9,11 @@
 import { Context, Service } from 'cordis'
 import type z from 'schemastery'
 import type { Branded } from '@deepseek-ai/dsh-brand'
+import { redactSecrets } from './redact.ts'
+import type { RedactedSecret } from './redact.ts'
+
+export { redactSecrets } from './redact.ts'
+export type { RedactedSecret, RedactedValue } from './redact.ts'
 
 /** Nominal id of one registered settings namespace. */
 export type SettingsNamespace = Branded<'SettingsNamespace'>
@@ -51,8 +56,32 @@ export interface SettingsDescriptor {
   schema: unknown
   /** Current resolved value. */
   value: unknown
+  /**
+   * Monotonic revision of the raw user section this descriptor was read at.
+   * Send it back as `expectedRevision` on a write to refuse a stale one.
+   */
+  revision: number
+  /** Registrant's composition `base` layer (detached), when one was declared. */
+  base?: unknown
+  /**
+   * Raw user section from the stored document (detached), when one exists and
+   * is well-formed; a field's presence here is what marks it user-overridden.
+   */
+  user?: unknown
   /** Owner's declared effect timing. */
   applies: SettingsApplies
+  /** Schema-declared secret positions; present only under `redactSecrets`. */
+  secrets?: RedactedSecret[]
+}
+
+/** Options for {@link Settings.describe}. */
+export interface SettingsDescribeOptions {
+  /**
+   * Strip `role('secret')` fields from `value`/`base`/`user` and enumerate
+   * them in each descriptor's `secrets`. Every wire surface MUST pass this;
+   * the verbatim default exists for same-process configuration UIs only.
+   */
+  redactSecrets?: boolean
 }
 
 /** Owner-facing handle for one registered namespace. */
@@ -106,6 +135,19 @@ declare module 'cordis' {
      * @mode emit
      */
     'settings/updated'(ns: SettingsNamespace, next: unknown, prev: unknown, source: SettingsUpdateSource): void
+
+    /**
+     * One registered namespace's RAW user section changed, whether or not the
+     * resolved value did. `settings/updated` is the consumer-facing event and
+     * stays deep-equal-gated; this one exists for configuration surfaces,
+     * which must learn that a field went from inherited to overridden (same
+     * resolved value, different meaning) and that their held revision is
+     * stale. Listener containment matches `settings/updated`.
+     * @param ns - the namespace whose stored section changed.
+     * @param revision - the namespace's new revision.
+     * @mode emit
+     */
+    'settings/document-updated'(ns: SettingsNamespace, revision: number): void
   }
 }
 
@@ -131,6 +173,32 @@ export function deepEqualJson(a: unknown, b: unknown): boolean {
   return keys.every(key => key in right && deepEqualJson(left[key], right[key]))
 }
 
+/**
+ * A write refused because the namespace moved since the caller read it. The
+ * seam's serialized write queue orders writes; it cannot tell a fresh writer
+ * from one holding a stale snapshot, which is what this reports.
+ */
+export class SettingsConflictError extends Error {
+  /** Stable machine code for wire layers mapping this to their own taxonomy. */
+  readonly code = 'SETTINGS_CONFLICT'
+  /** The revision the write expected. */
+  readonly expected: number
+  /** The revision the namespace actually stands at. */
+  readonly actual: number
+
+  /**
+   * @param ns - the namespace whose write was refused.
+   * @param expected - the revision the caller sent.
+   * @param actual - the revision now stored.
+   */
+  constructor(ns: SettingsNamespace, expected: number, actual: number) {
+    super(`settings namespace "${ns}" changed since it was read (expected revision ${String(expected)}, now ${String(actual)})`)
+    this.name = 'SettingsConflictError'
+    this.expected = expected
+    this.actual = actual
+  }
+}
+
 /** Whether a value is a plain data object (not an array, null, or class instance). */
 function isPlainObject(value: unknown): value is Record<string, unknown> {
   if (typeof value !== 'object' || value === null || Array.isArray(value)) return false
@@ -138,6 +206,44 @@ function isPlainObject(value: unknown): value is Record<string, unknown> {
   return proto === Object.prototype || proto === null
 }
 
+/**
+ * One path-addressed edit to a namespace's user section. Path mutation exists
+ * for a caller holding an INCOMPLETE view of the section — a configuration UI
+ * reads the redacted descriptor, which by construction never received the
+ * `role('secret')` fields. Such a caller can name the field it means without
+ * restating the section: a wholesale `replace` rebuilt from a redacted
+ * document silently deletes every secret the wire never returned.
+ */
+export type SettingsPathOp =
+  | { op: 'set'; path: readonly string[]; value: unknown }
+  | { op: 'unset'; path: readonly string[] }
+
+/** Apply one path op to a detached section, returning the next section. */
+function applyPathOp(section: Record<string, unknown>, op: SettingsPathOp): Record<string, unknown> {
+  const [head, ...rest] = op.path
+  // The empty path addresses the section itself.
+  if (head === undefined) {
+    if (op.op === 'unset') return {}
+    if (!isPlainObject(op.value)) {
+      throw new TypeError('settings mutate: setting the section root requires a plain object')
+    }
+    return { ...op.value }
+  }
+  if (rest.length === 0) {
+    if (op.op === 'set') return { ...section, [head]: op.value }
+    const { [head]: _removed, ...kept } = section
+    return kept
+  }
+  const child = section[head]
+  if (!isPlainObject(child)) {
+    // Unsetting through an absent path is already satisfied; setting through
+    // one creates the intermediate objects it needs.
+    if (op.op === 'unset') return section
+    return { ...section, [head]: applyPathOp({}, { ...op, path: rest }) }
+  }
+  return { ...section, [head]: applyPathOp(child, { ...op, path: rest }) }
+}
+
 /** Human label for a value rejected by the JSON-shape boundary (numbers reject inline). */
 function describeRejected(value: unknown): string {
   if (value === undefined) return 'undefined'
@@ -238,6 +344,15 @@ interface SettingsRegistration {
   base: unknown
   applies: SettingsApplies
   resolved: unknown
+  /**
+   * Monotonic counter over this namespace's RAW user section — bumped by any
+   * change to what is stored, including one whose resolved value is
+   * unchanged (adding an override equal to the composition base). Editors
+   * carry it as `expectedRevision` to detect a concurrent write, and the
+   * document event carries it so another tab learns a field went from
+   * inherited to overridden.
+   */
+  revision: number
   watchers: Set<SettingsWatcher>
 }
 
@@ -321,6 +436,7 @@ export abstract class Settings extends Service {
       base: options?.base,
       applies: options?.applies ?? 'live',
       resolved: deepFreeze(this.resolve(schema, options?.base, this.section(ns))),
+      revision: 0,
       watchers: new Set(),
     }
     this.ctx.effect(() => {
@@ -345,16 +461,45 @@ export abstract class Settings extends Service {
   }
 
   /**
-   * Describe every registered namespace for configuration surfaces.
+   * Describe every registered namespace for configuration surfaces, including
+   * the composition `base` and raw user layers so a form can mark which fields
+   * the user overrode (presence in `user`) and what a reset returns to.
+   * @param options - redaction switch; wire surfaces must redact.
    * @returns one descriptor per registered namespace, in registration order.
    */
-  describe(): SettingsDescriptor[] {
-    return [...this.registrations.values()].map(registration => ({
-      ns: registration.ns,
-      schema: registration.schema.toJSON(),
-      value: registration.resolved,
-      applies: registration.applies,
-    }))
+  describe(options?: SettingsDescribeOptions): SettingsDescriptor[] {
+    return [...this.registrations.values()].map((registration) => {
+      let user: Record<string, unknown> | undefined
+      try {
+        user = this.section(registration.ns)
+      } catch {
+        // A malformed stored section already warned at publish and kept the
+        // last good resolved value; only that malformed shape can throw here,
+        // and describing it as "no user layer" keeps this read total.
+        user = undefined
+      }
+      const base = registration.base === undefined ? undefined : structuredClone(registration.base)
+      const detachedUser = user === undefined ? undefined : structuredClone(user)
+      const descriptor: SettingsDescriptor = {
+        ns: registration.ns,
+        schema: registration.schema.toJSON(),
+        value: registration.resolved,
+        revision: registration.revision,
+        ...base === undefined ? {} : { base },
+        ...detachedUser === undefined ? {} : { user: detachedUser },
+        applies: registration.applies,
+      }
+      if (options?.redactSecrets !== true) return descriptor
+      const schema = registration.schema as z<never>
+      const redacted = redactSecrets(schema, registration.resolved)
+      return {
+        ...descriptor,
+        value: redacted.value,
+        ...base === undefined ? {} : { base: redactSecrets(schema, base).value },
+        ...detachedUser === undefined ? {} : { user: redactSecrets(schema, detachedUser).value },
+        secrets: redacted.secrets,
+      }
+    })
   }
 
   /**
@@ -374,9 +519,11 @@ export abstract class Settings extends Service {
    * merging over the previous write's committed section.
    * @param ns - the registered namespace to update.
    * @param patch - plain-object patch over the user section.
+   * @param expectedRevision - the descriptor `revision` the caller read; a
+   *   namespace that moved past it rejects with {@link SettingsConflictError}.
    */
-  async update(ns: SettingsNamespace, patch: object): Promise<void> {
-    return this.write(ns, patch, 'merge')
+  async update(ns: SettingsNamespace, patch: object, expectedRevision?: number): Promise<void> {
+    return this.write(ns, patch, 'merge', expectedRevision)
   }
 
   /**
@@ -386,14 +533,46 @@ export abstract class Settings extends Service {
    * merge-only patch cannot express (`replace({})` re-inherits everything).
    * @param ns - the registered namespace to replace.
    * @param section - the complete next user section.
+   * @param expectedRevision - the descriptor `revision` the caller read; a
+   *   namespace that moved past it rejects with {@link SettingsConflictError}.
    */
-  async replace(ns: SettingsNamespace, section: object): Promise<void> {
-    return this.write(ns, section, 'replace')
+  async replace(ns: SettingsNamespace, section: object, expectedRevision?: number): Promise<void> {
+    return this.write(ns, section, 'replace', expectedRevision)
+  }
+
+  /**
+   * Apply path-addressed edits to one registered namespace's user section,
+   * validate, persist, then commit and emit. The ops are applied to the
+   * section as it stands when the write reaches the front of the queue, so a
+   * caller never has to restate fields it did not touch — and, crucially,
+   * cannot delete fields it never saw. This is the write path for any caller
+   * holding a redacted view; `replace` remains the wholesale reset.
+   * @param ns - the registered namespace to edit.
+   * @param ops - ordered path edits; later ops observe earlier ones.
+   * @param expectedRevision - the descriptor `revision` the caller read; a
+   *   namespace that moved past it rejects with {@link SettingsConflictError}.
+   */
+  async mutate(ns: SettingsNamespace, ops: readonly SettingsPathOp[], expectedRevision?: number): Promise<void> {
+    if (!Array.isArray(ops)) throw new TypeError(`settings mutate for "${ns}" must be an array of path ops`)
+    for (const op of ops) {
+      if (!isPlainObject(op) || (op['op'] !== 'set' && op['op'] !== 'unset')) {
+        throw new TypeError(`settings mutate for "${ns}" ops must be {op:'set'|'unset', path}`)
+      }
+      if (!Array.isArray(op['path']) || (op['path'] as unknown[]).some(part => typeof part !== 'string')) {
+        throw new TypeError(`settings mutate for "${ns}" op paths must be arrays of strings`)
+      }
+    }
+    return this.write(ns, ops, 'mutate', expectedRevision)
   }
 
   /** Validate a write, then queue it on the namespace's serialized write chain. */
-  private write(ns: SettingsNamespace, input: object, mode: 'merge' | 'replace'): Promise<void> {
-    const verb = mode === 'merge' ? 'update' : 'replace'
+  private write(
+    ns: SettingsNamespace,
+    input: object,
+    mode: 'merge' | 'replace' | 'mutate',
+    expectedRevision?: number,
+  ): Promise<void> {
+    const verb = mode === 'merge' ? 'update' : mode === 'replace' ? 'replace' : 'mutate'
     const registration = this.registrations.get(ns)
     if (registration === undefined) {
       throw new Error(`settings namespace "${ns}" is not registered`)
@@ -404,13 +583,19 @@ export abstract class Settings extends Service {
     if (!this.writable) {
       throw new Error(`settings provider is read-only: "${ns}" cannot be updated in-process`)
     }
-    if (!isPlainObject(input)) {
-      throw new TypeError(`settings ${verb} for "${ns}" must be a plain object`)
+    // A mutate's ops array is wrapped so one JSON-shape walk covers both
+    // shapes; merge/replace carry the section itself.
+    let payload: Record<string, unknown>
+    if (mode === 'mutate') {
+      payload = { ops: input }
+    } else {
+      if (!isPlainObject(input)) throw new TypeError(`settings ${verb} for "${ns}" must be a plain object`)
+      payload = input
     }
     // Snapshot at call time: the queue must never read a caller-owned object
     // the caller may keep mutating while the write waits its turn. The same
     // walk is the JSON-shape boundary check (see cloneJsonShaped).
-    const snapshot = cloneJsonShaped(input, (label, path) =>
+    const snapshot = cloneJsonShaped(payload, (label, path) =>
       new TypeError(`settings ${verb} for "${ns}" must be JSON-shaped data (found ${label} at ${path})`))
     const previous = this.writeQueues.get(ns) ?? Promise.resolve()
     // Chain past a failed predecessor: one rejected write must not poison the
@@ -422,9 +607,20 @@ export abstract class Settings extends Service {
       if (this.registrations.get(ns) !== registration) {
         throw new Error(`settings namespace "${ns}" registration was disposed before the queued ${verb} ran`)
       }
+      // Every mode derives from the section as it stands NOW, at the front of
+      // the queue — never from whatever the caller last saw.
+      const current = this.section(ns) ?? {}
+      // The revision check belongs HERE, not at call time: the queue orders
+      // writes but cannot tell a fresh writer from one holding a snapshot
+      // that a predecessor already superseded.
+      if (expectedRevision !== undefined && expectedRevision !== registration.revision) {
+        throw new SettingsConflictError(ns, expectedRevision, registration.revision)
+      }
       const section = mode === 'merge'
-        ? mergeLayers(this.section(ns) ?? {}, snapshot) as Record<string, unknown>
-        : snapshot
+        ? mergeLayers(current, snapshot) as Record<string, unknown>
+        : mode === 'replace'
+          ? snapshot
+          : (snapshot['ops'] as SettingsPathOp[]).reduce(applyPathOp, current)
       const next = deepFreeze(this.resolve(registration.schema, registration.base, section))
       await this.persist(ns, section)
       // The write reached storage either way; the cache must say so. Commit
@@ -434,6 +630,7 @@ export abstract class Settings extends Service {
       // TODO(settings-replacement-resync): Re-resolve any replacement registration
       // from this persisted section so an old in-flight write cannot leave it stale.
       if (this.registrations.get(ns) === registration && !this.isStopped()) {
+        this.bumpRevision(registration, current, section)
         this.commit(registration, next, 'update')
       }
     })
@@ -449,6 +646,19 @@ export abstract class Settings extends Service {
    * @param source - change origin; defaults to `provider`.
    */
   protected publish(doc: Record<string, unknown>, source: SettingsUpdateSource = 'provider'): void {
+    // Read every raw section BEFORE swapping the document, so the revision
+    // bump below compares what was stored with what now is — an external edit
+    // moves the revision exactly like an in-process write.
+    const before = new Map<SettingsNamespace, unknown>()
+    for (const registration of this.registrations.values()) {
+      try {
+        before.set(registration.ns, this.section(registration.ns))
+      } catch {
+        // A malformed stored section is not a readable "before"; treating it
+        // as absent still bumps against any well-formed replacement.
+        before.set(registration.ns, undefined)
+      }
+    }
     this.document = doc
     for (const registration of this.registrations.values()) {
       let next: unknown
@@ -459,6 +669,7 @@ export abstract class Settings extends Service {
         this.ctx.logger.warn(error)
         continue
       }
+      this.bumpRevision(registration, before.get(registration.ns), this.section(registration.ns))
       this.commit(registration, next, source)
     }
   }
@@ -480,6 +691,42 @@ export abstract class Settings extends Service {
     return schema(mergeLayers(base, section) as never)
   }
 
+  /**
+   * Advance a namespace's revision when its RAW section changed, and announce
+   * it. Deliberately independent of {@link commit}'s resolved-value equality:
+   * storing an override equal to the composition base leaves the resolved
+   * value alone but changes what the document says, which is exactly what a
+   * configuration surface must re-read.
+   */
+  private bumpRevision(registration: SettingsRegistration, before: unknown, after: unknown): void {
+    if (deepEqualJson(before, after)) return
+    registration.revision += 1
+    this.emitDocumentUpdated(registration.ns, registration.revision)
+  }
+
+  /** Contained fan-out of `settings/document-updated`, mirroring {@link commit}'s. */
+  private emitDocumentUpdated(ns: SettingsNamespace, revision: number): void {
+    let invariantFailure: unknown
+    const args = ['settings/document-updated', ns, revision]
+    for (const listener of this.ctx.events.dispatch('emit', args) as Array<(...listenerArgs: unknown[]) => unknown>) {
+      try {
+        const returned = listener(ns, revision)
+        if (returned != null && typeof (returned as PromiseLike<unknown>).then === 'function') {
+          void Promise.resolve(returned as PromiseLike<unknown>).then(undefined, (error: unknown) => {
+            this.warnListenerFailure(ns, error)
+          })
+        }
+      } catch (error) {
+        if ((error as { code?: unknown } | null)?.code === 'INVARIANT') {
+          invariantFailure ??= error
+          continue
+        }
+        this.warnListenerFailure(ns, error)
+      }
+    }
+    if (invariantFailure !== undefined) throw invariantFailure as Error
+  }
+
   /** Commit a resolved value when changed: swap, notify watchers, emit the event. */
   private commit(registration: SettingsRegistration, next: unknown, source: SettingsUpdateSource): void {
     const prev = registration.resolved
@@ -546,4 +793,80 @@ export abstract class Settings extends Service {
   }
 }
 
+/**
+ * Value mirror of the `FiberState` members {@link isUnloading} compares
+ * against: a const enum has no runtime object to import, and the value is
+ * needed at runtime (same rationale as the CLI boot driver's mirror).
+ */
+const FIBER_DISPOSED = 4
+const FIBER_UNLOADING = 5
+
+/** Whether the consumer's own fiber is tearing down (not just losing the settings service). */
+function isUnloading(ctx: Context): boolean {
+  const state: number = ctx.fiber.state
+  return state === FIBER_UNLOADING || state === FIBER_DISPOSED
+}
+
+/** Hooks a consumer hands to {@link installSettingsSection}. */
+export interface SettingsSectionHooks<T> {
+  /**
+   * Receive the active configuration source: the resolved settings scope
+   * while one is attached, the composition entry otherwise. Called before
+   * the matching `onChange` at attach and at detach.
+   * @param current - thunk returning the currently authoritative value.
+   */
+  setSource(current: () => T): void
+  /**
+   * Re-judge anything derived from the source — registration-level facts,
+   * memoized resolutions — after an attach, a detach, or a committed change.
+   */
+  onChange(): void
+}
+
+/**
+ * Install the canonical optional-settings consumer wiring: while a settings
+ * service exists, register `ns` with the consumer's composition entry as the
+ * `base` layer and point the source thunk at the resolved scope; when the
+ * service goes away (disposal, provider reload), fall back to the entry so
+ * the consumer keeps working exactly as composed. The registration rides the
+ * scoped fiber, so no settings service ever mounted means none of this runs.
+ * @param ctx - consumer plugin context owning the wiring.
+ * @param ns - the consumer-owned settings namespace.
+ * @param schema - schema resolving the namespace (typically the plugin Config).
+ * @param entry - the consumer's composition entry config, used as `base`.
+ * @param hooks - source sink and change notification.
+ */
+export function installSettingsSection<T>(
+  ctx: Context,
+  ns: SettingsNamespace,
+  schema: z<T>,
+  entry: T,
+  hooks: SettingsSectionHooks<T>,
+): void {
+  ctx.inject(['settings'], (sctx) => {
+    const scope = sctx.settings.register(ns, schema, { base: entry })
+    hooks.setSource(() => scope.get())
+    sctx.effect(() => () => {
+      // This disposer runs for two different reasons. A settings provider
+      // detaching leaves the consumer running, so it must fall back to its
+      // composition entry and re-judge what it derived. The consumer's own
+      // unload runs it too — and there `onChange` would re-register routes
+      // and touch resources the teardown is releasing, so the fallback is
+      // pointless and the notification actively harmful.
+      if (isUnloading(ctx)) return
+      hooks.setSource(() => entry)
+      hooks.onChange()
+    })
+    hooks.onChange()
+    scope.watch(() => {
+      // A stored change landing while the consumer unloads reaches the watcher
+      // before the registration is released, and `onChange` is exactly as
+      // harmful here as in the disposer above: it re-registers routes against
+      // a fiber whose resources are being let go.
+      if (isUnloading(ctx)) return
+      hooks.onChange()
+    })
+  })
+}
+
 export default Settings
diff --git a/packages/settings/settings/src/redact.ts b/packages/settings/settings/src/redact.ts
new file mode 100644
index 0000000000..c9f4cda347
--- /dev/null
+++ b/packages/settings/settings/src/redact.ts
@@ -0,0 +1,109 @@
+/**
+ * Structural secret redaction for settings values. `role('secret')` fields are
+ * removed from a value before it crosses a wire boundary; a sidecar records
+ * each schema-declared secret position and whether it currently holds a value,
+ * so a configuration surface can render a write-only input without ever
+ * receiving the secret itself.
+ * @module @deepseek-ai/dsh-settings/redact
+ */
+
+import type z from 'schemastery'
+
+/**
+ * Minimal structural view of a live schemastery node. Only the relations the
+ * redactor walks are named; everything else on the instance is ignored.
+ */
+interface SchemaNode {
+  type?: string
+  meta?: { role?: unknown }
+  /** `object` properties, keyed by property name. */
+  dict?: Record<string, SchemaNode>
+  /** `dict`/`array` element schema. */
+  inner?: SchemaNode
+}
+
+/** One schema-declared secret position inside a redacted value. */
+export interface RedactedSecret {
+  /** Path from the section root to the removed field (concrete dict keys and array indexes included). */
+  path: string[]
+  /** Whether the field held a value before redaction. */
+  set: boolean
+}
+
+/** A value with every `role('secret')` field removed, plus the removal record. */
+export interface RedactedValue {
+  /** Detached copy of the input with secret fields absent. */
+  value: unknown
+  /**
+   * Every reachable secret position: object properties always (even unset, so
+   * a form knows the slot exists), dict entries and array items only where the
+   * value has them.
+   */
+  secrets: RedactedSecret[]
+}
+
+/** Whether a value is a plain data object the walker may recurse into. */
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+function walk(node: SchemaNode | undefined, value: unknown, path: string[], secrets: RedactedSecret[]): unknown {
+  if (node === undefined) return value
+  if (node.meta?.role === 'secret') {
+    secrets.push({ path, set: value !== undefined })
+    return undefined
+  }
+  switch (node.type) {
+    case 'object': {
+      const properties = node.dict ?? {}
+      const source = isRecord(value) ? value : undefined
+      const rebuilt: Record<string, unknown> = {}
+      if (source !== undefined) {
+        for (const [key, entry] of Object.entries(source)) {
+          if (key in properties) continue
+          rebuilt[key] = entry
+        }
+      }
+      for (const [key, child] of Object.entries(properties)) {
+        const stripped = walk(child, source?.[key], [...path, key], secrets)
+        if (stripped !== undefined) rebuilt[key] = stripped
+      }
+      return source === undefined && Object.keys(rebuilt).length === 0 ? value : rebuilt
+    }
+    case 'dict': {
+      if (!isRecord(value)) return value
+      const rebuilt: Record<string, unknown> = {}
+      for (const [key, entry] of Object.entries(value)) {
+        const stripped = walk(node.inner, entry, [...path, key], secrets)
+        if (stripped !== undefined) rebuilt[key] = stripped
+      }
+      return rebuilt
+    }
+    case 'array': {
+      if (!Array.isArray(value)) return value
+      return value.map((entry, index) => walk(node.inner, entry, [...path, String(index)], secrets))
+    }
+    default:
+      // TODO(settings-wire-redaction): Fail closed instead — a secret reachable
+      // only through a union, intersection, or transform is returned verbatim
+      // here, with nothing recording that it was missed.
+      return value
+  }
+}
+
+/**
+ * Remove every `role('secret')` field a schema declares from a value. The
+ * walker follows `object`, `dict`, and `array` containers; a secret must be
+ * declared directly on a field reachable through those containers (a secret
+ * buried inside a union branch or transform is not reachable and must not be
+ * modeled that way). The input is never mutated.
+ * @param schema - live schemastery schema describing the value.
+ * @param value - the value to strip; `undefined` yields an empty record with
+ *   object-property secret slots still enumerated.
+ * @returns the stripped detached value and the ordered secret positions.
+ */
+export function redactSecrets(schema: z<never>, value: unknown): RedactedValue {
+  const secrets: RedactedSecret[] = []
+  const stripped = walk(schema, value, [], secrets)
+  return { value: stripped, secrets }
+}
diff --git a/packages/settings/settings/tests/redact.spec.ts b/packages/settings/settings/tests/redact.spec.ts
new file mode 100644
index 0000000000..fff6902ea6
--- /dev/null
+++ b/packages/settings/settings/tests/redact.spec.ts
@@ -0,0 +1,168 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import z from 'schemastery'
+import { redactSecrets, settingsNamespace } from '../src/index.ts'
+import { MemorySettings } from './memory.ts'
+
+const Profile = z.object({
+  apiKey: z.string().role('secret'),
+  apiKeyEnv: z.string().role('credential-ref'),
+  baseURL: z.string(),
+})
+
+const Adapter: z<object> = z.object({
+  apiKey: z.string().role('secret'),
+  providers: z.dict(Profile),
+  fallbacks: z.array(Profile),
+  nested: z.object({
+    token: z.string().role('secret'),
+  }),
+})
+
+describe('redactSecrets', () => {
+  it('strips secrets from object, dict, and array containers and records each position', () => {
+    const { value, secrets } = redactSecrets(Adapter as z<never>, {
+      apiKey: 'top-secret',
+      providers: {
+        openai: { apiKey: 'sk-live', apiKeyEnv: 'OPENAI_API_KEY', baseURL: 'https://x' },
+        anthropic: { apiKeyEnv: 'ANTHROPIC_API_KEY' },
+      },
+      fallbacks: [{ apiKey: 'fb', baseURL: 'https://y' }],
+      nested: {},
+    })
+    expect(value).toEqual({
+      providers: {
+        openai: { apiKeyEnv: 'OPENAI_API_KEY', baseURL: 'https://x' },
+        anthropic: { apiKeyEnv: 'ANTHROPIC_API_KEY' },
+      },
+      fallbacks: [{ baseURL: 'https://y' }],
+      nested: {},
+    })
+    expect(secrets).toEqual([
+      { path: ['apiKey'], set: true },
+      { path: ['providers', 'openai', 'apiKey'], set: true },
+      { path: ['providers', 'anthropic', 'apiKey'], set: false },
+      { path: ['fallbacks', '0', 'apiKey'], set: true },
+      { path: ['nested', 'token'], set: false },
+    ])
+  })
+
+  it('enumerates unset object-property slots without inventing containers', () => {
+    const { value, secrets } = redactSecrets(Adapter as z<never>, undefined)
+    expect(value).toBeUndefined()
+    expect(secrets).toEqual([
+      { path: ['apiKey'], set: false },
+      { path: ['nested', 'token'], set: false },
+    ])
+  })
+
+  it('never mutates the input and preserves keys outside the schema', () => {
+    const input = Object.freeze({
+      apiKey: 'frozen',
+      extra: Object.freeze({ keep: true }),
+    })
+    const { value } = redactSecrets(Adapter as z<never>, input)
+    expect(input.apiKey).toBe('frozen')
+    expect(value).toEqual({ extra: { keep: true }, nested: undefined } as never)
+    expect((value as { extra: unknown }).extra).toEqual({ keep: true })
+  })
+
+  it('passes malformed container values through untouched', () => {
+    const { value, secrets } = redactSecrets(Adapter as z<never>, {
+      providers: 'not-a-dict',
+      fallbacks: 'not-an-array',
+    })
+    expect(value).toEqual({ providers: 'not-a-dict', fallbacks: 'not-an-array' })
+    expect(secrets).toEqual([
+      { path: ['apiKey'], set: false },
+      { path: ['nested', 'token'], set: false },
+    ])
+  })
+
+  it('treats a secret-role container as one opaque secret leaf', () => {
+    const Weird = z.object({ blob: z.object({ inner: z.string() }).role('secret') })
+    const { value, secrets } = redactSecrets(Weird as z<never>, { blob: { inner: 'x' } })
+    expect(value).toEqual({})
+    expect(secrets).toEqual([{ path: ['blob'], set: true }])
+  })
+
+  it('drops a dict entry whose entire value is the secret', () => {
+    const Tokens = z.object({ tokens: z.dict(z.string().role('secret')) })
+    const { value, secrets } = redactSecrets(Tokens as z<never>, { tokens: { a: 'x', b: 'y' } })
+    expect(value).toEqual({ tokens: {} })
+    expect(secrets).toEqual([
+      { path: ['tokens', 'a'], set: true },
+      { path: ['tokens', 'b'], set: true },
+    ])
+  })
+
+  it('tolerates structural nodes missing their relation maps', () => {
+    expect(redactSecrets({ type: 'dict' } as never, { k: 'v' })).toEqual({ value: { k: 'v' }, secrets: [] })
+    expect(redactSecrets({ type: 'object' } as never, { k: 'v' })).toEqual({ value: { k: 'v' }, secrets: [] })
+    expect(redactSecrets({ type: 'array' } as never, ['v'])).toEqual({ value: ['v'], secrets: [] })
+  })
+})
+
+describe('describe() layers and redaction', () => {
+  const NS = settingsNamespace('adapter')
+
+  async function boot(doc?: Record<string, unknown>) {
+    const ctx = new Context()
+    await ctx.plugin(MemorySettings, doc === undefined ? undefined : { doc })
+    return ctx
+  }
+
+  it('exposes detached base and user layers beside the resolved value', async () => {
+    const ctx = await boot({ adapter: { baseURL: 'https://user' } })
+    const base = { apiKey: 'entry-key', baseURL: 'https://base' }
+    ctx.settings.register(NS, Profile, { base })
+    const [descriptor] = ctx.settings.describe()
+    expect(descriptor?.base).toEqual(base)
+    expect(descriptor?.base).not.toBe(base)
+    expect(descriptor?.user).toEqual({ baseURL: 'https://user' })
+    expect(descriptor?.value).toEqual({ apiKey: 'entry-key', baseURL: 'https://user' })
+    ;(descriptor?.user as Record<string, unknown>).baseURL = 'mutated'
+    expect(ctx.settings.describe()[0]?.user).toEqual({ baseURL: 'https://user' })
+    expect(descriptor?.secrets).toBeUndefined()
+  })
+
+  it('omits the layers when neither a base nor a user section exists', async () => {
+    const ctx = await boot()
+    ctx.settings.register(NS, Profile)
+    const [descriptor] = ctx.settings.describe()
+    expect(descriptor).not.toHaveProperty('base')
+    expect(descriptor).not.toHaveProperty('user')
+  })
+
+  it('describes a section that became malformed after registration as having no user layer', async () => {
+    const ctx = await boot({ adapter: { baseURL: 'https://user' } })
+    const provider = ctx.get('settings') as MemorySettings
+    ctx.settings.register(NS, Profile, { base: { baseURL: 'https://base' } })
+    provider.pushExternal({ adapter: 5 })
+    const [descriptor] = ctx.settings.describe()
+    expect(descriptor).not.toHaveProperty('user')
+    // The malformed publish kept the last good resolved value.
+    expect(descriptor?.value).toEqual({ baseURL: 'https://user' })
+  })
+
+  it('redacts a descriptor that has neither base nor user layer', async () => {
+    const ctx = await boot()
+    ctx.settings.register(NS, Profile)
+    const [descriptor] = ctx.settings.describe({ redactSecrets: true })
+    expect(descriptor).not.toHaveProperty('base')
+    expect(descriptor).not.toHaveProperty('user')
+    expect(descriptor?.secrets).toEqual([{ path: ['apiKey'], set: false }])
+  })
+
+  it('redacts every layer and enumerates secret slots under redactSecrets', async () => {
+    const ctx = await boot({ adapter: { apiKey: 'user-key', baseURL: 'https://user' } })
+    ctx.settings.register(NS, Profile, { base: { apiKey: 'entry-key' } })
+    const [descriptor] = ctx.settings.describe({ redactSecrets: true })
+    expect(descriptor?.value).toEqual({ baseURL: 'https://user' })
+    expect(descriptor?.base).toEqual({})
+    expect(descriptor?.user).toEqual({ baseURL: 'https://user' })
+    expect(descriptor?.secrets).toEqual([{ path: ['apiKey'], set: true }])
+    const [verbatim] = ctx.settings.describe()
+    expect(verbatim?.value).toEqual({ apiKey: 'user-key', baseURL: 'https://user' })
+  })
+})
diff --git a/packages/settings/settings/tests/settings.spec.ts b/packages/settings/settings/tests/settings.spec.ts
index 379ce02d08..12e0d77ffe 100644
--- a/packages/settings/settings/tests/settings.spec.ts
+++ b/packages/settings/settings/tests/settings.spec.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import z from 'schemastery'
-import { Settings, deepEqualJson, settingsNamespace, type SettingsNamespace, type SettingsScope, type SettingsUpdateSource } from '../src/index.ts'
+import { Settings, SettingsConflictError, deepEqualJson, installSettingsSection, settingsNamespace, type SettingsNamespace, type SettingsScope, type SettingsUpdateSource } from '../src/index.ts'
 import { MemorySettings } from './memory.ts'
 
 /** A provider implementing only the three primitives: the seam owns init. */
@@ -652,3 +652,361 @@ describe('watch', () => {
     expect(scope.get()).toEqual({ theme: 'light', fontSize: 14 })
   })
 })
+
+describe('installSettingsSection', () => {
+  const HelperSchema: z<{ theme: string }> = z.object({
+    theme: z.string().default('default'),
+  })
+
+  it('drives the source through attach, live commits, and detach', async () => {
+    const ctx = new Context()
+    const entry = { theme: 'entry' }
+    let current: () => { theme: string } = () => entry
+    let changes = 0
+    installSettingsSection(ctx, settingsNamespace('helper-ns'), HelperSchema, entry, {
+      setSource: (source) => {
+        current = source
+      },
+      onChange: () => {
+        changes += 1
+      },
+    })
+    // No settings service mounted: nothing ran, the entry stays authoritative.
+    expect(current()).toEqual({ theme: 'entry' })
+    expect(changes).toBe(0)
+
+    const fiber = ctx.plugin(MemorySettings, { doc: { 'helper-ns': { theme: 'user' } } })
+    await fiber
+    await vi.waitFor(() => {
+      expect(current()).toEqual({ theme: 'user' })
+    })
+    expect(changes).toBe(1)
+
+    await ctx.settings.update(settingsNamespace('helper-ns'), { theme: 'live' })
+    await vi.waitFor(() => {
+      expect(changes).toBe(2)
+    })
+    expect(current()).toEqual({ theme: 'live' })
+
+    await fiber.dispose()
+    await vi.waitFor(() => {
+      expect(changes).toBe(3)
+    })
+    expect(current()).toEqual({ theme: 'entry' })
+  })
+
+  it('stays silent when the consumer itself unloads', async () => {
+    const { ctx } = await boot({ doc: { 'helper-ns': { theme: 'user' } } })
+    const entry = { theme: 'entry' }
+    let current: () => { theme: string } = () => entry
+    const changes: string[] = []
+    const consumer = ctx.plugin({
+      inject: ['settings'],
+      apply: (child: Context) => {
+        installSettingsSection(child, settingsNamespace('helper-ns'), HelperSchema, entry, {
+          setSource: (source) => {
+            current = source
+          },
+          onChange: () => {
+            changes.push(current().theme)
+          },
+        })
+      },
+    })
+    await consumer
+    await vi.waitFor(() => {
+      expect(changes).toEqual(['user'])
+    })
+
+    // The consumer's own teardown must not re-derive anything: an onChange
+    // here would re-register routes and touch resources being released.
+    await consumer.dispose()
+    await new Promise(resolve => setTimeout(resolve, 20))
+    expect(changes).toEqual(['user'])
+  })
+
+  it('stays silent for a stored change that lands while the consumer unloads', async () => {
+    // The watcher outlives the start of teardown by the width of the unload,
+    // so a document change arriving in that window reaches it. Notifying then
+    // is exactly as harmful as notifying from the disposer.
+    const { ctx, provider } = await boot({ doc: { 'helper-ns': { theme: 'user' } } })
+    const entry = { theme: 'entry' }
+    let current: () => { theme: string } = () => entry
+    const changes: string[] = []
+    const consumer = ctx.plugin({
+      inject: ['settings'],
+      apply: (child: Context) => {
+        installSettingsSection(child, settingsNamespace('helper-ns'), HelperSchema, entry, {
+          setSource: (source) => {
+            current = source
+          },
+          onChange: () => {
+            changes.push(current().theme)
+          },
+        })
+      },
+    })
+    await consumer
+    await vi.waitFor(() => {
+      expect(changes).toEqual(['user'])
+    })
+
+    const unloading = consumer.dispose()
+    provider.pushExternal({ 'helper-ns': { theme: 'racing' } })
+    await unloading
+    expect(changes).toEqual(['user'])
+  })
+})
+
+describe('mutate (path-addressed writes)', () => {
+  interface KeyedConfig {
+    apiKey: string
+    baseURL: string
+    reasoning: string
+  }
+
+  const KeyedSchema: z<KeyedConfig> = z.object({
+    apiKey: z.string().role('secret'),
+    baseURL: z.string(),
+    reasoning: z.string(),
+  })
+
+  const KEYED = settingsNamespace('keyed')
+  const NESTED = settingsNamespace('workspace')
+
+  async function mounted(doc: Record<string, unknown>) {
+    const ctx = new Context()
+    await ctx.plugin(BareProvider, { doc })
+    ctx.settings.register(KEYED, KeyedSchema)
+    return ctx
+  }
+
+  it('removes one field without touching a secret the caller never saw', async () => {
+    // The data-loss shape this exists to prevent: a configuration UI reads the
+    // REDACTED descriptor (no apiKey), the user resets baseURL, and the client
+    // rebuilds the section from what it holds. A wholesale replace of that
+    // rebuild deletes the stored literal key; a path unset cannot.
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored', baseURL: 'https://user', reasoning: 'high' } })
+    const redacted = ctx.settings.describe({ redactSecrets: true }).find(d => d.ns === KEYED)!
+    expect(redacted.user).toEqual({ baseURL: 'https://user', reasoning: 'high' })
+
+    await ctx.settings.mutate(KEYED, [{ op: 'unset', path: ['baseURL'] }])
+
+    const raw = ctx.settings.describe().find(d => d.ns === KEYED)!
+    expect(raw.user).toEqual({ apiKey: 'sk-stored', reasoning: 'high' })
+  })
+
+  it('applies set and unset in one write, in order', async () => {
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored', baseURL: 'https://old' } })
+    await ctx.settings.mutate(KEYED, [
+      { op: 'set', path: ['baseURL'], value: 'https://new' },
+      { op: 'set', path: ['reasoning'], value: 'low' },
+      { op: 'unset', path: ['reasoning'] },
+    ])
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user)
+      .toEqual({ apiKey: 'sk-stored', baseURL: 'https://new' })
+  })
+
+  it('reads the section as it stands at the front of the queue, not at call time', async () => {
+    // Two concurrent writers: the mutate is issued against the pre-update
+    // section but must observe the update that ran before it.
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored' } })
+    const first = ctx.settings.update(KEYED, { baseURL: 'https://first', reasoning: 'high' })
+    const second = ctx.settings.mutate(KEYED, [{ op: 'unset', path: ['reasoning'] }])
+    await Promise.all([first, second])
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user)
+      .toEqual({ apiKey: 'sk-stored', baseURL: 'https://first' })
+  })
+
+  it('creates intermediate objects for a nested set and leaves an absent unset alone', async () => {
+    const ctx = new Context()
+    await ctx.plugin(BareProvider, { doc: {} })
+    ctx.settings.register(NESTED, NestedSchema)
+    await ctx.settings.mutate(NESTED, [{ op: 'set', path: ['retry', 'attempts'], value: 5 }])
+    expect(ctx.settings.describe().find(d => d.ns === NESTED)!.user).toEqual({ retry: { attempts: 5 } })
+    await ctx.settings.mutate(NESTED, [{ op: 'unset', path: ['missing', 'deep'] }])
+    expect(ctx.settings.describe().find(d => d.ns === NESTED)!.user).toEqual({ retry: { attempts: 5 } })
+  })
+
+  it('edits one leaf of an existing nested object without replacing its siblings', async () => {
+    const ctx = new Context()
+    await ctx.plugin(BareProvider, { doc: { workspace: { retry: { attempts: 5, delayMs: 250 } } } })
+    ctx.settings.register(NESTED, NestedSchema)
+    await ctx.settings.mutate(NESTED, [{ op: 'set', path: ['retry', 'delayMs'], value: 900 }])
+    expect(ctx.settings.describe().find(d => d.ns === NESTED)!.user)
+      .toEqual({ retry: { attempts: 5, delayMs: 900 } })
+  })
+
+  it('addresses the section itself through the empty path', async () => {
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored', baseURL: 'https://user' } })
+    await ctx.settings.mutate(KEYED, [{ op: 'set', path: [], value: { reasoning: 'low' } }])
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user).toEqual({ reasoning: 'low' })
+    await ctx.settings.mutate(KEYED, [{ op: 'unset', path: [] }])
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user).toEqual({})
+  })
+
+  it('refuses a non-object at the section root, leaving the stored section alone', async () => {
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored' } })
+    await expect(ctx.settings.mutate(KEYED, [{ op: 'set', path: [], value: 'a whole section' }]))
+      .rejects.toThrow(/setting the section root requires a plain object/)
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user).toEqual({ apiKey: 'sk-stored' })
+  })
+
+  it('rejects ops that are not an array at all', async () => {
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored' } })
+    await expect(ctx.settings.mutate(KEYED, { op: 'unset', path: ['apiKey'] } as never))
+      .rejects.toThrow(/must be an array of path ops/)
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user).toEqual({ apiKey: 'sk-stored' })
+  })
+
+  it('rejects a malformed op before anything is queued', async () => {
+    const ctx = await mounted({ keyed: { apiKey: 'sk-stored' } })
+    await expect(ctx.settings.mutate(KEYED, [{ op: 'delete' } as never]))
+      .rejects.toThrow(/must be \{op:'set'\|'unset', path\}/)
+    await expect(ctx.settings.mutate(KEYED, [{ op: 'unset', path: ['a', 1] as never }]))
+      .rejects.toThrow(/op paths must be arrays of strings/)
+    expect(ctx.settings.describe().find(d => d.ns === KEYED)!.user).toEqual({ apiKey: 'sk-stored' })
+  })
+
+  it('rejects a value the JSON-shape boundary refuses', async () => {
+    const ctx = await mounted({ keyed: {} })
+    await expect(ctx.settings.mutate(KEYED, [{ op: 'set', path: ['baseURL'], value: new Date() }]))
+      .rejects.toThrow(/must be JSON-shaped data/)
+  })
+})
+
+describe('revision and conflict detection', () => {
+  const REV = settingsNamespace('rev')
+  const RevSchema: z<{ a: string; b: string }> = z.object({
+    a: z.string().default('base-a'),
+    b: z.string(),
+  })
+
+  async function mounted(doc: Record<string, unknown> = {}) {
+    const ctx = new Context()
+    await ctx.plugin(BareProvider, { doc })
+    return ctx
+  }
+
+  it('refuses a write whose expected revision is stale, leaving the winner in place', async () => {
+    // Two editors open the same namespace, both holding revision 0. The first
+    // to land wins; the second must be told rather than overwrite it.
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    const opened = ctx.settings.describe().find(d => d.ns === REV)!.revision
+
+    await ctx.settings.update(REV, { b: 'from-tab-B' }, opened)
+    await expect(ctx.settings.update(REV, { a: 'from-tab-A' }, opened))
+      .rejects.toThrow(/changed since it was read \(expected revision 0, now 1\)/)
+    expect(ctx.settings.describe().find(d => d.ns === REV)!.user).toEqual({ b: 'from-tab-B' })
+  })
+
+  it('carries the machine code and both revisions on the refusal', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    await ctx.settings.update(REV, { b: 'first' })
+    const error = await ctx.settings.update(REV, { b: 'second' }, 0).catch((e: unknown) => e)
+    expect(error).toBeInstanceOf(SettingsConflictError)
+    expect(error).toMatchObject({ code: 'SETTINGS_CONFLICT', expected: 0, actual: 1 })
+  })
+
+  it('accepts a write that carries no expectation at all', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    await ctx.settings.update(REV, { b: 'one' })
+    await ctx.settings.update(REV, { b: 'two' })
+    expect(ctx.settings.describe().find(d => d.ns === REV)!.revision).toBe(2)
+  })
+
+  it('announces a raw change whose resolved value is unchanged', async () => {
+    // Storing an override equal to the schema default leaves `value` alone but
+    // changes what the document says: the field is now overridden, not
+    // inherited, and another tab has to learn that.
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    const documents: Array<[string, number]> = []
+    const resolved: string[] = []
+    ctx.on('settings/document-updated', (ns, revision) => { documents.push([String(ns), revision]) })
+    ctx.on('settings/updated', (ns) => { resolved.push(String(ns)) })
+
+    await ctx.settings.update(REV, { a: 'base-a' })
+
+    expect(documents).toEqual([['rev', 1]])
+    expect(resolved).toEqual([])
+    expect(ctx.settings.describe().find(d => d.ns === REV)!.user).toEqual({ a: 'base-a' })
+  })
+
+  it('does not move the revision when a write stores an identical section', async () => {
+    const ctx = await mounted({ rev: { b: 'same' } })
+    ctx.settings.register(REV, RevSchema)
+    const documents: unknown[] = []
+    ctx.on('settings/document-updated', (ns, revision) => { documents.push([String(ns), revision]) })
+    await ctx.settings.update(REV, { b: 'same' })
+    expect(documents).toEqual([])
+    expect(ctx.settings.describe().find(d => d.ns === REV)!.revision).toBe(0)
+  })
+
+  it('moves the revision for an external edit the provider publishes', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    const documents: Array<[string, number]> = []
+    ctx.on('settings/document-updated', (ns, revision) => { documents.push([String(ns), revision]) })
+    ;(ctx.settings as unknown as { publish(doc: Record<string, unknown>): void })
+      .publish({ rev: { b: 'edited on disk' } })
+    expect(documents).toEqual([['rev', 1]])
+    // An editor that opened before the external edit is now refused.
+    await expect(ctx.settings.update(REV, { b: 'stale' }, 0)).rejects.toThrow(SettingsConflictError)
+  })
+
+  it('moves the revision past a stored section that was not an object', async () => {
+    // A hand-edited file can leave a namespace holding a scalar. The resolved
+    // value keeps its last good reading, and the repair that follows still has
+    // to announce itself — an open editor is reading a document it cannot see.
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    const settings = ctx.settings as unknown as { publish(doc: Record<string, unknown>): void }
+    settings.publish({ rev: 'not a section' })
+    const documents: Array<[string, number]> = []
+    ctx.on('settings/document-updated', (ns, revision) => { documents.push([String(ns), revision]) })
+    settings.publish({ rev: { b: 'repaired by hand' } })
+    expect(documents).toEqual([['rev', 1]])
+  })
+
+  it('contains a throwing document listener and keeps the rest of the fan-out running', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    const seen: number[] = []
+    ctx.on('settings/document-updated', () => { throw new Error('document listener boom') })
+    ctx.on('settings/document-updated', (_ns, revision) => { seen.push(revision) })
+    await ctx.settings.update(REV, { b: 'one' })
+    await ctx.settings.update(REV, { b: 'two' })
+    expect(seen).toEqual([1, 2])
+  })
+
+  it('contains an async document listener rejection', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    // Same shape as the `settings/updated` case above: the unknown return type
+    // keeps an async listener legal at this file's typed surface while the
+    // runtime value stays the rejected promise the containment guard handles.
+    const boom = (): unknown => Promise.reject(new Error('async document boom'))
+    ctx.on('settings/document-updated', boom)
+    await ctx.settings.update(REV, { b: 'one' })
+    expect(ctx.settings.describe().find(d => d.ns === REV)!.revision).toBe(1)
+    // Give the rejected listener promise a microtask turn; containment means
+    // vitest observes no unhandled rejection out of this test.
+    await new Promise(resolve => setTimeout(resolve, 10))
+  })
+
+  it('propagates an invariant-coded document listener failure instead of containing it', async () => {
+    const ctx = await mounted()
+    ctx.settings.register(REV, RevSchema)
+    ctx.on('settings/document-updated', () => {
+      throw Object.assign(new Error('forged revision'), { code: 'INVARIANT' })
+    })
+    expect(() => {
+      (ctx.settings as unknown as { publish(doc: Record<string, unknown>): void })
+        .publish({ rev: { b: 'edited on disk' } })
+    }).toThrow(/forged revision/)
+  })
+})
diff --git a/packages/settings/settings/tsdown.config.ts b/packages/settings/settings/tsdown.config.ts
new file mode 100644
index 0000000000..e92275a7f5
--- /dev/null
+++ b/packages/settings/settings/tsdown.config.ts
@@ -0,0 +1,25 @@
+import { defineConfig } from 'tsdown'
+
+/** Build the package root and optional invariant companion as independent bundles. */
+export default defineConfig([
+  {
+    entry: ['lib/types/index.js'],
+    outDir: 'lib',
+    format: ['esm'],
+    platform: 'node',
+    target: 'es2024',
+    fixedExtension: false,
+    dts: false,
+    clean: false,
+  },
+  {
+    entry: ['lib/types/invariant.js'],
+    outDir: 'lib',
+    format: ['esm'],
+    platform: 'node',
+    target: 'es2024',
+    fixedExtension: false,
+    dts: false,
+    clean: false,
+  },
+])
diff --git a/packages/subagent/subagent-dsh-sdk/README.i18n.yaml b/packages/subagent/subagent-dsh-sdk/README.i18n.yaml
index 296617f484..cd2be512c9 100644
--- a/packages/subagent/subagent-dsh-sdk/README.i18n.yaml
+++ b/packages/subagent/subagent-dsh-sdk/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/subagent/subagent-dsh-sdk/README.md
-README.md: e904ce3c09a1b44f8f5a0072b9ca85812898e74f
-README.zh.md: cec89ad9a65c68163fc136fe7b04cb135c57fb51
+README.md: a0c0811b585b69a634e49a2c838137655f316585
+README.zh.md: e068e27c7cb2cfd39bbf723fabbc29b17f6676f8
diff --git a/packages/subagent/subagent-dsh-sdk/README.md b/packages/subagent/subagent-dsh-sdk/README.md
index e904ce3c09..a0c0811b58 100644
--- a/packages/subagent/subagent-dsh-sdk/README.md
+++ b/packages/subagent/subagent-dsh-sdk/README.md
@@ -30,9 +30,9 @@ The provider advertises no start-time capabilities (`outputSchema`/`depthLimit`/
 | `command` | required | Executable spawned per run (the child runtime bin or packaged exe). |
 | `args` | `[]` | Command arguments (typically the child's `cordis.yml` path). |
 | `cwd` | parent session cwd | Working-directory override; same validation as [`subagent-acp`](../subagent-acp/README.md). |
-| `provider` | `deepseek` | Provider route sent in the child's `initialize`. |
+| `provider` | `deepseek-official` | Provider route sent in the child's `initialize`. |
 | `model` | `deepseek-v4-flash` | Model sent in the child's `initialize`. |
-| `maxTokens` | provider default | Per-request output-token cap sent in the child's `initialize`; it applies to the child root agent and its in-process descendants. |
+| `maxTokens` | adapter/provider route default | Per-request output-token cap sent in the child's `initialize`; it applies to the child root agent and its in-process descendants. |
 | `env` | `{}` | Explicit child environment layered over a credential-scrubbed parent environment (e.g. the child's own `DEEPSEEK_API_KEY`, or `DSH_CORDIS_CONFIG`). |
 | `shutdownTimeoutMs` | `1000` | Bound on the protocol `shutdown` exchange during dispose. |
 | `disposeEofGraceMs` | `6000` | Grace after stdin EOF before platform termination. |
diff --git a/packages/subagent/subagent-dsh-sdk/README.zh.md b/packages/subagent/subagent-dsh-sdk/README.zh.md
index cec89ad9a6..e068e27c7c 100644
--- a/packages/subagent/subagent-dsh-sdk/README.zh.md
+++ b/packages/subagent/subagent-dsh-sdk/README.zh.md
@@ -30,9 +30,9 @@ Provider 不宣告任何启动期能力（`outputSchema`/`depthLimit`/`toolFilte
 | `command` | 必填 | 每次运行时 spawn 的可执行文件（子运行时 bin 或打包后的可执行文件）。 |
 | `args` | `[]` | 命令参数（通常是子进程的 `cordis.yml` 路径）。 |
 | `cwd` | 父会话 cwd | 工作目录覆盖；校验规则与 [`subagent-acp`](../subagent-acp/README.md) 相同。 |
-| `provider` | `deepseek` | 写入子进程 `initialize` 的提供方路由。 |
+| `provider` | `deepseek-official` | 写入子进程 `initialize` 的提供方路由。 |
 | `model` | `deepseek-v4-flash` | 写入子进程 `initialize` 的模型。 |
-| `maxTokens` | 提供方默认值 | 写入子进程 `initialize` 的单次请求输出 token 上限；对子运行时的根 agent 及其进程内后代生效。 |
+| `maxTokens` | 适配器／提供方路由默认值 | 写入子进程 `initialize` 的单次请求输出 token 上限；对子运行时的根 agent 及其进程内后代生效。 |
 | `env` | `{}` | 在凭据擦除后的父环境之上叠加的显式子环境（例如子进程自己的 `DEEPSEEK_API_KEY`，或 `DSH_CORDIS_CONFIG`）。 |
 | `shutdownTimeoutMs` | `1000` | dispose 期间协议 `shutdown` 交换的时限。 |
 | `disposeEofGraceMs` | `6000` | stdin EOF 之后、平台终止之前的宽限。 |
diff --git a/packages/subagent/subagent-dsh-sdk/src/index.ts b/packages/subagent/subagent-dsh-sdk/src/index.ts
index e25ed9fb27..09a1a64d32 100644
--- a/packages/subagent/subagent-dsh-sdk/src/index.ts
+++ b/packages/subagent/subagent-dsh-sdk/src/index.ts
@@ -42,7 +42,7 @@ export interface Config {
    * fails.
    */
   cwd?: string
-  /** Provider route the child runtime initializes with (default `deepseek`). */
+  /** Provider route the child runtime initializes with (default `deepseek-official`). */
   provider: string
   /** Model the child runtime initializes with (default `deepseek-v4-flash`). */
   model: string
@@ -73,7 +73,7 @@ export const Config: z<Config> = z.object({
   command: z.string().required(),
   args: z.array(z.string()).default([]),
   cwd: z.string(),
-  provider: z.string().default('deepseek'),
+  provider: z.string().default('deepseek-official'),
   model: z.string().default('deepseek-v4-flash'),
   maxTokens: z.number().step(1).min(1).max(Number.MAX_SAFE_INTEGER),
   env: z.dict(z.string()).default({}),
diff --git a/packages/subagent/subagent-spawn/tests/spawn.e2e.ts b/packages/subagent/subagent-spawn/tests/spawn.e2e.ts
index b71d11b5d8..48220c1d9d 100644
--- a/packages/subagent/subagent-spawn/tests/spawn.e2e.ts
+++ b/packages/subagent/subagent-spawn/tests/spawn.e2e.ts
@@ -23,7 +23,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('spawn backend with-key smoke', (
   it('a parent delegates to a child that writes a file on disk', async () => {
     workdir = await mkdtemp(join(tmpdir(), 'dsh-subagent-spawn-e2e-'))
     ctx = await spawnHarness(workdir)
-    const parent = ctx.agentLoop.create(SessionId('e2e-parent'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+    const parent = ctx.agentLoop.create(SessionId('e2e-parent'), { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
 
     parent.followup(createUserMessage({
       content: [{ type: 'text', text:
diff --git a/packages/support/llm-replay/README.i18n.yaml b/packages/support/llm-replay/README.i18n.yaml
index cfd0fb0b63..e4f6711ea7 100644
--- a/packages/support/llm-replay/README.i18n.yaml
+++ b/packages/support/llm-replay/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/support/llm-replay/README.md
-README.md: 6c934e01a5f13b94724d0e5435524d9d463adb2f
-README.zh.md: d13d84ad95a6b63177ee0e2aa83965be19fdeeb8
+README.md: 0deb6e76b29d40483b754ac01c98ee0e01bfcbe8
+README.zh.md: 7720e2d1bc6eb7bc5c89d5c1708767a54a7b0080
diff --git a/packages/support/llm-replay/README.md b/packages/support/llm-replay/README.md
index 6c934e01a5..0deb6e76b2 100644
--- a/packages/support/llm-replay/README.md
+++ b/packages/support/llm-replay/README.md
@@ -33,7 +33,7 @@ Replay keys every call by its calling session id (`GenerateOptions.sessionId`, s
   name: '@deepseek-ai/dsh-llm-replay'
   config:
     providers:
-      - id: deepseek
+      - id: deepseek-official
         name: DeepSeek
         retryPolicy:
           mode: normal
diff --git a/packages/support/llm-replay/README.zh.md b/packages/support/llm-replay/README.zh.md
index d13d84ad95..7720e2d1bc 100644
--- a/packages/support/llm-replay/README.zh.md
+++ b/packages/support/llm-replay/README.zh.md
@@ -33,7 +33,7 @@ fixture 就是持久化的会话日志（`<scenario>/session.jsonl`）。其 `as
   name: '@deepseek-ai/dsh-llm-replay'
   config:
     providers:
-      - id: deepseek
+      - id: deepseek-official
         name: DeepSeek
         retryPolicy:
           mode: normal
diff --git a/packages/support/loader-smoke/src/index.ts b/packages/support/loader-smoke/src/index.ts
index e573684a4e..4ee5cfec7d 100644
--- a/packages/support/loader-smoke/src/index.ts
+++ b/packages/support/loader-smoke/src/index.ts
@@ -141,6 +141,13 @@ export interface LoaderSmokeOptions {
   readonly prepare?: (cwd: string) => Promise<void> | void
   /** Optional world-state assertion run in the isolated cwd before cleanup. */
   readonly inspect?: (cwd: string) => Promise<void> | void
+  /**
+   * Exact process exit code this smoke expects; defaults to `0`. Scenarios
+   * pinning a designed failure surface (a one-shot turn ending in an error
+   * result) declare its nonzero exit here, and a run that exits any other
+   * way — including succeeding — still fails the smoke.
+   */
+  readonly expectedExitCode?: number
 }
 
 /** Captured output from a Loader smoke that exited successfully. */
@@ -187,8 +194,9 @@ export async function runLoaderSmoke(options: LoaderSmokeOptions): Promise<Loade
     if (result.timedOut) {
       throw new Error(`${options.label} did not exit within ${processTimeoutMs / 1_000}s. stdout:\n${result.stdout}\nstderr:\n${result.stderr}`)
     }
-    if (result.failed) {
-      throw new Error(`${options.label} exited ${String(result.exitCode)}. stdout:\n${result.stdout}\nstderr:\n${result.stderr}`)
+    const expectedExitCode = options.expectedExitCode ?? 0
+    if (result.exitCode !== expectedExitCode) {
+      throw new Error(`${options.label} exited ${String(result.exitCode)} (expected ${expectedExitCode}). stdout:\n${result.stdout}\nstderr:\n${result.stderr}`)
     }
     await options.inspect?.(cwd)
     return { stdout: result.stdout, stderr: result.stderr }
diff --git a/packages/support/loader-smoke/tests/loader-smoke.spec.ts b/packages/support/loader-smoke/tests/loader-smoke.spec.ts
index d1f764c69b..7a803f2c80 100644
--- a/packages/support/loader-smoke/tests/loader-smoke.spec.ts
+++ b/packages/support/loader-smoke/tests/loader-smoke.spec.ts
@@ -74,7 +74,32 @@ describe('runLoaderSmoke', () => {
       libBinScript: fixture('fail'),
       configPath,
       tsconfigPath,
-    })).rejects.toThrow('failure fixture exited 7. stdout:\n\nstderr:\nfixture failed')
+    })).rejects.toThrow('failure fixture exited 7 (expected 0). stdout:\n\nstderr:\nfixture failed')
+  })
+
+  it('accepts a declared expected failure exit and rejects any other outcome', async () => {
+    // A scenario pinning a designed failure surface declares its exit code…
+    const declared = await runLoaderSmoke({
+      label: 'declared failure fixture',
+      tempDirPrefix: 'loader-smoke-declared-fail-',
+      binScript: fixture('fail'),
+      libBinScript: fixture('fail'),
+      configPath,
+      tsconfigPath,
+      expectedExitCode: 7,
+    })
+    expect(declared.stderr).toBe('fixture failed\n')
+
+    // …and a run that succeeds instead still fails the smoke.
+    await expect(runLoaderSmoke({
+      label: 'unexpectedly clean fixture',
+      tempDirPrefix: 'loader-smoke-clean-',
+      binScript: fixture('success'),
+      libBinScript: fixture('success'),
+      configPath,
+      tsconfigPath,
+      expectedExitCode: 7,
+    })).rejects.toThrow(/exited 0 \(expected 7\)/)
   })
 
   it('kills a process at its deadline and reports captured output', async () => {
diff --git a/packages/ui/app-boot/README.i18n.yaml b/packages/ui/app-boot/README.i18n.yaml
index ab36ca58a5..c670928ba7 100644
--- a/packages/ui/app-boot/README.i18n.yaml
+++ b/packages/ui/app-boot/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/ui/app-boot/README.md
-README.md: 4d8c7de65515a251f227075c7baf041fc1b210c8
-README.zh.md: d9b69a2b102a60685524288f75edeaabb21802db
+README.md: 1beffd6fbff2b84202683b010cd104f7c84297c7
+README.zh.md: d9ce9774b9b492a98556bbd9aa4564b711dbe40e
diff --git a/packages/ui/app-boot/README.md b/packages/ui/app-boot/README.md
index 4d8c7de655..1beffd6fbf 100644
--- a/packages/ui/app-boot/README.md
+++ b/packages/ui/app-boot/README.md
@@ -27,8 +27,8 @@ This package carries no loader hooks and no dev-mode surface. The [`dsh` app](..
 
 A developer's machine-local preferences live outside every repository in the Harness home (default `~/.dsh`, overridable via `$DSH_HOME`; the single root [`resolveDshHome`](../../util/paths/README.md) resolves), consumed by the official `dsh` surfaces ([`apps/cli`](../../../apps/cli/README.md)); the demo bins boot their committed trees verbatim. Two optional files:
 
-- **`.env`** — loaded after the invoking directory's `.env`; `process.loadEnvFile` never overrides, so precedence is ambient environment > project `.env` > personal `.env`.
-- **`config.yaml`** — loader overlay patches applied over the shipped default config, with the same semantics as the shipped surface overlays: an id-targeted patch replaces the named entry's whole `config` (restate unchanged fields), `insert` adds entries, and `!!js` expressions interpolate at mount — so a personal `apiKey` can reference the personal `.env`. A patch naming an entry id absent from the booted tree is a silent no-op. An empty or comments-only file throws (it parses to nothing, not to a list); disable the overlay with `[]` or by deleting the file.
+- **`.env`** — the credential store of [`dsh-credentials-local`](../../credentials/credentials-local/README.md), read by that provider alone. No surface hoists it into `process.env`: doing so would make every stored key look like a read-only launch override on the next run, blocking rotation from the TUI and the web page. The environment layers are the ambient one and the invoking directory's `.env` (loaded by the bin; `process.loadEnvFile` never overrides), and a composition without the credential provider keeps resolving keys from those alone.
+- **`config.yaml`** — loader overlay patches applied over the shipped default config, with the same semantics as the shipped surface overlays: an id-targeted patch replaces the named entry's whole `config` (restate unchanged fields), `insert` adds entries, and `!!js` expressions interpolate at mount. A patch naming an entry id absent from the booted tree is a silent no-op. An empty or comments-only file throws (it parses to nothing, not to a list); disable the overlay with `[]` or by deleting the file.
 
 Subprocess test launchers point `DSH_HOME` at an isolated per-test directory so a developer's personal overlay can never leak into fixtures.
 
diff --git a/packages/ui/app-boot/README.zh.md b/packages/ui/app-boot/README.zh.md
index d9b69a2b10..d9ce9774b9 100644
--- a/packages/ui/app-boot/README.zh.md
+++ b/packages/ui/app-boot/README.zh.md
@@ -27,8 +27,8 @@
 
 开发者的机器本地偏好位于所有仓库之外的 Harness home 中（默认 `~/.dsh`，可由 `$DSH_HOME` 覆盖；统一由根级 [`resolveDshHome`](../../util/paths/README.md) 解析），并由官方 `dsh` 界面（[`apps/cli`](../../../apps/cli/README.md)）使用；demo bin 会原样启动仓库中提交的树。这里有两个可选文件：
 
-- **`.env`**：在调用目录的 `.env` 之后加载；`process.loadEnvFile` 从不覆盖已有值，因此优先级为环境中的值 > 项目 `.env` > 个人 `.env`。
-- **`config.yaml`**：在发布的默认配置上应用 Loader overlay patch，语义与交付的 surface overlay 相同：按 id 定位的 patch 会替换对应条目的整个 `config`（未改字段也要重述），`insert` 会添加条目，`!!js` 表达式则在挂载时插值，因此个人 `apiKey` 可以引用个人 `.env`。如果 patch 指定的条目 id 不在已启动树中，则静默不执行任何操作。空文件或仅含注释的文件会抛出异常（其解析结果为空，而不是列表）；如需禁用 overlay，请使用 `[]` 或删除该文件。
+- **`.env`**：[`dsh-credentials-local`](../../credentials/credentials-local/README.md) 的凭据存储，只由该 provider 读取。没有任何表层会把它提升进 `process.env`：那样做会让每个已存密钥在下次运行时看起来都像只读的启动时覆盖，从而阻断从 TUI 与 Web 页面轮换密钥。环境层次由环境中的值与调用目录的 `.env` 构成（由 bin 加载；`process.loadEnvFile` 从不覆盖已有值），没有凭据 provider 的组合仍然只从这两者解析密钥。
+- **`config.yaml`**：在发布的默认配置上应用 Loader overlay patch，语义与交付的 surface overlay 相同：按 id 定位的 patch 会替换对应条目的整个 `config`（未改字段也要重述），`insert` 会添加条目，`!!js` 表达式则在挂载时插值。如果 patch 指定的条目 id 不在已启动树中，则静默不执行任何操作。空文件或仅含注释的文件会抛出异常（其解析结果为空，而不是列表）；如需禁用 overlay，请使用 `[]` 或删除该文件。
 
 子进程测试 launcher 会把 `DSH_HOME` 指向逐测试隔离的目录，确保开发者的个人 overlay 不会泄漏到 fixture（测试前置数据）中。
 
diff --git a/packages/ui/app-boot/src/index.ts b/packages/ui/app-boot/src/index.ts
index 25e6291bbf..b404809527 100644
--- a/packages/ui/app-boot/src/index.ts
+++ b/packages/ui/app-boot/src/index.ts
@@ -234,7 +234,8 @@ export function assertEntriesActive(ctx: Context, binName: string): void {
  * @param patches - optional overlay patches applied over the included tree
  * (see {@link loadPersonalPatches}); an empty list mounts none.
  * @param prepare - optional host setup run after Loader installation and before any config-tree entry mounts.
- * @returns the root context once every entry has started.
+ * @returns the root context once every entry has started, or as soon as a
+ * surface disposed the tree while startup was still in flight.
  */
 export async function boot(
   binName: string,
@@ -255,6 +256,13 @@ export async function boot(
     },
   })
   await ctx.loader.await()
+  // A surface can finish and dispose the whole tree while that await is still
+  // pending: the TUI renders as soon as its own fiber starts, so an `/exit`
+  // typed before the last entry settles tears the context down under us. The
+  // Loader service goes with it, and both assertions below describe a live
+  // tree — reading `ctx.loader` here would throw a TypeError over an app that
+  // exited exactly as asked.
+  if (ctx.get('loader') === undefined) return ctx
   assertEntriesLoaded(ctx, binName)
   assertEntriesActive(ctx, binName)
   return ctx
diff --git a/packages/ui/app-boot/tests/app-boot.spec.ts b/packages/ui/app-boot/tests/app-boot.spec.ts
index 264ba82e65..d6807bbaed 100644
--- a/packages/ui/app-boot/tests/app-boot.spec.ts
+++ b/packages/ui/app-boot/tests/app-boot.spec.ts
@@ -207,6 +207,25 @@ describe('boot', () => {
     }
   })
 
+  it('returns instead of asserting over a tree a surface disposed mid-startup', async () => {
+    // What a TUI `/exit` does (ui-tui's disposeRootAndExit): dispose the root
+    // fiber, which lands while boot() is still awaiting the Loader whenever the
+    // surface renders before the last entry settles. The Loader service goes
+    // with the tree, so reading it for the post-boot assertions would crash an
+    // app that exited exactly as the user asked.
+    const dir = tmp()
+    writeFileSync(join(dir, 'exiting.mjs'), [
+      'export const name = "exiting"',
+      'export function apply(ctx) {',
+      '  void ctx.root.fiber.dispose()',
+      '}',
+      '',
+    ].join('\n'))
+    writeFileSync(join(dir, 'cordis.yml'), '- id: exiting\n  name: ./exiting.mjs\n')
+    const ctx = await boot(NAME, join(dir, 'cordis.yml'))
+    expect(ctx.get('loader')).toBeUndefined()
+  })
+
   it('rejects (never exits 0 half-empty) when a config names a plugin that cannot be imported', async () => {
     const dir = tmp()
     writeFileSync(join(dir, 'cordis.yml'), '- id: ghost\n  name: ./missing.mjs\n')
diff --git a/packages/ui/jsonrpc/README.i18n.yaml b/packages/ui/jsonrpc/README.i18n.yaml
index 324f8c4d99..8942c29a92 100644
--- a/packages/ui/jsonrpc/README.i18n.yaml
+++ b/packages/ui/jsonrpc/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/ui/jsonrpc/README.md
-README.md: b1219ba10269fc7d046da22c280ff1b91424a5ae
-README.zh.md: 1c27f5edf2f1f172aa6303697b17e2e77a65842a
+README.md: ac47af28e69e647ba44a7718478db163d406f5dc
+README.zh.md: 2ab600dce52f471d8eef63848e6283217008dcf6
diff --git a/packages/ui/jsonrpc/README.md b/packages/ui/jsonrpc/README.md
index b1219ba102..ac47af28e6 100644
--- a/packages/ui/jsonrpc/README.md
+++ b/packages/ui/jsonrpc/README.md
@@ -6,7 +6,7 @@ The `jsonrpc` plugin serves newline-delimited JSON-RPC over stdio so out-of-proc
 
 ## Wiring
 
-`inject: ['agents']`. The server gets or creates one agent per `sessionId`. It forwards subagent completions only when the service-snapshotted lifecycle `local` flag is true; provider names, child ids, and durable lineage never establish locality. A registered adapter wins, an unowned `deepseek` route mounts `dsh-llm-deepseek`, and any other unowned provider fails initialization. Other capabilities come from the surrounding `cordis.yml`.
+`inject: ['agents']`. The server gets or creates one agent per `sessionId`. It forwards subagent completions only when the service-snapshotted lifecycle `local` flag is true; provider names, child ids, and durable lineage never establish locality. A registered adapter wins, an unowned `deepseek-official` route mounts `dsh-llm-deepseek`, and any other unowned provider fails initialization. Other capabilities come from the surrounding `cordis.yml`.
 
 ## Config
 
@@ -22,7 +22,7 @@ The plugin answers `shutdown`, disposes SDK-owned agents and subscriptions to qu
 
 ## Wire notes
 
-`initialize.serverInfo.name` is the wire-stable `deepseek-harness-sdk-runtime`. An optional positive `initialize.maxTokens` becomes the request output cap of each SDK-created agent and its in-process descendants; invalid values reject initialization, while omission sends no cap and preserves provider defaults. A session accepts one in-flight prompt; overlap fails immediately, other sessions remain independent, and the session is reusable after settlement. `session.finished` reports that prompt's message-triggered turn outcome; later between-turn records still stream as `session.event` notifications but cannot replace the prompt status. Persistence roots and persona come from `cordis.yml`.
+`initialize.serverInfo.name` is the wire-stable `deepseek-harness-sdk-runtime`. An optional positive `initialize.maxTokens` becomes the request output cap of each SDK-created agent and its in-process descendants; invalid values reject initialization, while omission sends no SDK cap and allows the selected adapter or provider route default to apply. A session accepts one in-flight prompt; overlap fails immediately, other sessions remain independent, and the session is reusable after settlement. `session.finished` reports that prompt's message-triggered turn outcome; later between-turn records still stream as `session.event` notifications but cannot replace the prompt status. Persistence roots and persona come from `cordis.yml`.
 
 ## Model Experience
 
diff --git a/packages/ui/jsonrpc/README.zh.md b/packages/ui/jsonrpc/README.zh.md
index 1c27f5edf2..2ab600dce5 100644
--- a/packages/ui/jsonrpc/README.zh.md
+++ b/packages/ui/jsonrpc/README.zh.md
@@ -6,7 +6,7 @@
 
 ## 组装
 
-`inject: ['agents']`。服务器按 `sessionId` 获取或创建一个 agent。只有服务对生命周期建立快照时记录的 `local` 标志为 true，服务器才会转发 subagent 完成事件；提供方名称、子级 id 和持久化谱系均不能证明本地性。已注册的适配器优先；尚无适配器负责的 `deepseek` 路由会挂载 `dsh-llm-deepseek`，任何其他尚无适配器负责的提供方都会导致初始化失败。其他功能由外围 `cordis.yml` 提供。
+`inject: ['agents']`。服务器按 `sessionId` 获取或创建一个 agent。只有服务对生命周期建立快照时记录的 `local` 标志为 true，服务器才会转发 subagent 完成事件；提供方名称、子级 id 和持久化谱系均不能证明本地性。已注册的适配器优先；尚无适配器负责的 `deepseek-official` 路由会挂载 `dsh-llm-deepseek`，任何其他尚无适配器负责的提供方都会导致初始化失败。其他功能由外围 `cordis.yml` 提供。
 
 ## 配置
 
@@ -22,7 +22,7 @@ Stdout 只承载 JSON-RPC 帧。部署不得组合 stdout logger；诊断应写
 
 ## 协议说明
 
-`initialize.serverInfo.name` 的协议稳定值为 `deepseek-harness-sdk-runtime`。可选的正整数 `initialize.maxTokens` 会成为每个 SDK 创建的 agent 及其进程内后代的请求输出上限；非法值会使初始化失败，省略时则不发送上限并保留提供方默认值。一个会话只接受一个进行中的提示词；重叠请求会立即失败，其他会话保持独立，当前请求结算后该会话可再次使用。`session.finished` 报告由该提示词消息触发的轮次结果；后续轮次间记录仍会作为 `session.event` 通知流式发出，但不能替换该提示词的状态。持久化根目录和 persona 由 `cordis.yml` 提供。
+`initialize.serverInfo.name` 的协议稳定值为 `deepseek-harness-sdk-runtime`。可选的正整数 `initialize.maxTokens` 会成为每个 SDK 创建的 agent 及其进程内后代的请求输出上限；非法值会使初始化失败，省略时则不发送 SDK 上限，并应用所选适配器或提供方路由的默认值。一个会话只接受一个进行中的提示词；重叠请求会立即失败，其他会话保持独立，当前请求结算后该会话可再次使用。`session.finished` 报告由该提示词消息触发的轮次结果；后续轮次间记录仍会作为 `session.event` 通知流式发出，但不能替换该提示词的状态。持久化根目录和 persona 由 `cordis.yml` 提供。
 
 ## 模型体验
 
diff --git a/packages/ui/jsonrpc/src/server.ts b/packages/ui/jsonrpc/src/server.ts
index aa4769aebc..d9144aada4 100644
--- a/packages/ui/jsonrpc/src/server.ts
+++ b/packages/ui/jsonrpc/src/server.ts
@@ -55,8 +55,8 @@ function successStatus(reason: string, options: HarnessSdkServerOptions): 'ok' |
  */
 export class HarnessSdkServer {
   private cwd = process.cwd()
-  private provider = 'deepseek'
-  private model = 'deepseek'
+  private provider = 'deepseek-official'
+  private model = 'deepseek-official'
   private maxTokens: number | undefined
   private llmFiber: { dispose(): Promise<void> } | undefined
   private readonly sessions = new Map<string, SessionRecord>()
@@ -124,7 +124,7 @@ export class HarnessSdkServer {
     this.model = params.model
     this.maxTokens = params.maxTokens
     if (!this.hasAdapterFor(this.provider)) {
-      if (this.provider !== 'deepseek') throw new Error(`no adapter registered for provider "${this.provider}"`)
+      if (this.provider !== 'deepseek-official') throw new Error(`no adapter registered for provider "${this.provider}"`)
       this.llmFiber = await this.ctx.plugin(LlmDeepSeek, {})
     }
     return { serverInfo: { name: 'deepseek-harness-sdk-runtime', version: '0.0.1' } }
diff --git a/packages/ui/jsonrpc/tests/plugin-apply.spec.ts b/packages/ui/jsonrpc/tests/plugin-apply.spec.ts
index 0eef295911..185805d739 100644
--- a/packages/ui/jsonrpc/tests/plugin-apply.spec.ts
+++ b/packages/ui/jsonrpc/tests/plugin-apply.spec.ts
@@ -153,7 +153,7 @@ describe('dsh-jsonrpc plugin apply', () => {
     vi.stubEnv('DEEPSEEK_API_KEY', 'test-key')
     const harness = await mountPlugin(storageDir)
     try {
-      harness.send({ jsonrpc: '2.0', id: 'init-1', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek', model: 'apply-model' } })
+      harness.send({ jsonrpc: '2.0', id: 'init-1', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek-official', model: 'apply-model' } })
 
       const response = await harness.waitForFrame(frame => frame.id === 'init-1', 'initialize response')
       expect(response).toEqual({
@@ -175,7 +175,7 @@ describe('dsh-jsonrpc plugin apply', () => {
     vi.stubEnv('DEEPSEEK_BASE_URL', llmServer.url)
     const harness = await mountPlugin(storageDir)
     try {
-      harness.send({ jsonrpc: '2.0', id: 1, method: 'initialize', params: { cwd: storageDir, provider: 'deepseek', model: 'dsagent-model' } })
+      harness.send({ jsonrpc: '2.0', id: 1, method: 'initialize', params: { cwd: storageDir, provider: 'deepseek-official', model: 'dsagent-model' } })
       await harness.waitForFrame(frame => frame.id === 1, 'initialize response')
 
       harness.send({
@@ -236,7 +236,7 @@ describe('dsh-jsonrpc plugin apply', () => {
       expect(harness.exits()).toEqual([0])
 
       const before = harness.frames().length
-      harness.send({ jsonrpc: '2.0', id: 'after-exit', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek', model: 'x' } })
+      harness.send({ jsonrpc: '2.0', id: 'after-exit', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek-official', model: 'x' } })
       await settle()
       expect(harness.frames().length).toBe(before)
     } finally {
@@ -257,7 +257,7 @@ describe('dsh-jsonrpc plugin apply', () => {
       expect(harness.outputErrors.map(error => error.message)).toEqual(['flush callback failed'])
 
       const before = harness.frames().length
-      harness.send({ jsonrpc: '2.0', id: 'after-flush-failure', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek', model: 'x' } })
+      harness.send({ jsonrpc: '2.0', id: 'after-flush-failure', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek-official', model: 'x' } })
       await settle()
       expect(harness.frames().length).toBe(before)
     } finally {
@@ -281,7 +281,7 @@ describe('dsh-jsonrpc plugin apply', () => {
       await harness.fiber.dispose()
 
       const before = harness.frames().length
-      harness.send({ jsonrpc: '2.0', id: 'probe-2', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek', model: 'x' } })
+      harness.send({ jsonrpc: '2.0', id: 'probe-2', method: 'initialize', params: { cwd: storageDir, provider: 'deepseek-official', model: 'x' } })
       await settle()
       expect(harness.frames().length).toBe(before)
       expect(harness.exits()).toEqual([])
diff --git a/packages/ui/jsonrpc/tests/server.spec.ts b/packages/ui/jsonrpc/tests/server.spec.ts
index 19ad56881c..10931f1bd7 100644
--- a/packages/ui/jsonrpc/tests/server.spec.ts
+++ b/packages/ui/jsonrpc/tests/server.spec.ts
@@ -121,7 +121,7 @@ describe('HarnessSdkServer', () => {
 
       const init = await server.handleRequest('initialize', {
         cwd: storageDir,
-        provider: 'deepseek',
+        provider: 'deepseek-official',
         model: 'dsagent-model',
         maxTokens: 321,
       }) as { serverInfo: { name: string } }
@@ -154,7 +154,7 @@ describe('HarnessSdkServer', () => {
       const orphanHandle = await ctx.agents.create({
         sessionId: SessionId('orphan-session'),
         meta: { cwd: storageDir },
-        agentOptions: { provider: 'deepseek', model: 'dsagent-model' },
+        agentOptions: { provider: 'deepseek-official', model: 'dsagent-model' },
       })
       orphanHandle.agent.followup(createUserMessage({ content: [{ type: 'text', text: 'outside the sdk session map' }], source: { kind: 'user' } }))
       await orphanHandle.agent.whenIdle()
@@ -352,7 +352,7 @@ describe('HarnessSdkServer', () => {
     try {
       const server = new HarnessSdkServer(ctx, new FakeTransport())
 
-      await server.initialize({ cwd: storageDir, provider: 'deepseek', model: 'plain-model' })
+      await server.initialize({ cwd: storageDir, provider: 'deepseek-official', model: 'plain-model' })
       await server.prompt({
         sessionId: 'plain',
         contentBlocks: [{ type: 'text', text: 'hello' }],
@@ -376,20 +376,20 @@ describe('HarnessSdkServer', () => {
       const parentHandle = await ctx.agents.create({
         sessionId: SessionId('main'),
         meta: { cwd: storageDir },
-        agentOptions: { provider: 'deepseek', model: 'deepseek' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-official' },
       })
       // A custom in-process provider may own its child at the provider/root
       // scope while preserving durable parent lineage.
       const handle = await ctx.agents.create({
         sessionId: SessionId('child-session'),
         meta: { cwd: storageDir, parentSession: SessionId('main') },
-        agentOptions: { provider: 'deepseek', model: 'deepseek' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-official' },
       })
       expect(ctx.agents.roots()).toContain(handle.agent)
       const parentlessHandle = await parentHandle.agent.ctx.agents.create({
         sessionId: SessionId('parentless-child-session'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       await settleSubagent(ctx, parentHandle.agent, {
         provider: 'spawn',
@@ -446,12 +446,12 @@ describe('HarnessSdkServer', () => {
       const parentHandle = await ctx.agents.create({
         sessionId: SessionId('collision-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const collidingChild = await parentHandle.agent.ctx.agents.create({
         sessionId: SessionId('remote-run-id'),
         meta: { cwd: storageDir, parentSession: SessionId('collision-parent') },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
 
       await settleSubagent(ctx, parentHandle.agent, {
@@ -485,12 +485,12 @@ describe('HarnessSdkServer', () => {
       const parentHandle = await ctx.agents.create({
         sessionId: SessionId('continuation-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const childHandle = await parentHandle.agent.ctx.agents.create({
         sessionId: SessionId('continuation-child'),
         meta: { cwd: storageDir, parentSession: SessionId('continuation-parent') },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
 
       await settleSubagent(ctx, parentHandle.agent, {
@@ -530,12 +530,12 @@ describe('HarnessSdkServer', () => {
       const oldParent = await ctx.agents.create({
         sessionId: SessionId('old-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const oldChild = await oldParent.agent.ctx.agents.create({
         sessionId: SessionId('reused-child'),
         meta: { cwd: storageDir, parentSession: SessionId('old-parent') },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const first = Promise.withResolvers<SubagentResult>()
       const sameLifetime = Promise.withResolvers<SubagentResult>()
@@ -571,12 +571,12 @@ describe('HarnessSdkServer', () => {
       const newParent = await ctx.agents.create({
         sessionId: SessionId('new-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const newChild = await newParent.agent.ctx.agents.create({
         sessionId: SessionId('reused-child'),
         meta: { cwd: storageDir, parentSession: SessionId('new-parent') },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       currentLocalAgent = newChild.agent
       const secondRun = await ctx.subagents.start('reused', {
@@ -629,12 +629,12 @@ describe('HarnessSdkServer', () => {
       const parent = await ctx.agents.create({
         sessionId: SessionId('provider-reuse-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const child = await parent.agent.ctx.agents.create({
         sessionId: SessionId('provider-reuse-child'),
         meta: { cwd: storageDir, parentSession: SessionId('provider-reuse-parent') },
-        agentOptions: { model: 'deepseek' },
+        agentOptions: { model: 'deepseek-official' },
       })
       const localResult = Promise.withResolvers<SubagentResult>()
       const remoteResult = Promise.withResolvers<SubagentResult>()
@@ -722,18 +722,18 @@ describe('HarnessSdkServer', () => {
       parentHandle = await ctx.agents.create({
         sessionId: SessionId('fallback-parent'),
         meta: { cwd: storageDir },
-        agentOptions: { provider: 'deepseek', model: 'deepseek' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-official' },
       })
       handle = await parentHandle.agent.ctx.agents.create({
         sessionId: SessionId('fallback-child-session'),
         meta: { cwd: storageDir, parentSession: SessionId('fallback-parent') },
-        agentOptions: { provider: 'deepseek', model: 'deepseek' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-official' },
       })
       const fallbackChild = handle.agent
       failedHandle = await parentHandle.agent.ctx.agents.create({
         sessionId: SessionId('failed-child-session'),
         meta: { cwd: storageDir },
-        agentOptions: { provider: 'deepseek', model: 'deepseek' },
+        agentOptions: { provider: 'deepseek-official', model: 'deepseek-official' },
       })
       const missedStartResult = Promise.withResolvers<SubagentResult>()
       const disposeMissedStartProvider = ctx.subagents.registerProvider({
@@ -831,11 +831,11 @@ describe('HarnessSdkServer', () => {
       const server = new HarnessSdkServer(ctx, new FakeTransport())
       const inspect = server as unknown as { hasAdapterFor(provider: string): boolean }
 
-      expect(inspect.hasAdapterFor('deepseek')).toBe(true)
+      expect(inspect.hasAdapterFor('deepseek-official')).toBe(true)
       expect(inspect.hasAdapterFor('missing-provider')).toBe(false)
-      await server.initialize({ cwd: storageDir, provider: 'deepseek', model: 'preinstalled-model' })
+      await server.initialize({ cwd: storageDir, provider: 'deepseek-official', model: 'preinstalled-model' })
 
-      expect(ctx.get('llm')?.listProviders().filter(provider => provider.id === 'deepseek')).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
+      expect(ctx.get('llm')?.listProviders().filter(provider => provider.id === 'deepseek-official')).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
       await server.shutdown()
     } finally {
       await ctx.fiber.dispose()
@@ -854,7 +854,7 @@ describe('HarnessSdkServer', () => {
       await expect(server.initialize({ cwd: storageDir, provider: 'private', model: 'new-model' }))
         .rejects.toThrow('no adapter registered for provider "private"')
 
-      expect(ctx.get('llm')?.listProviders()).toEqual([{ id: 'deepseek', name: 'DeepSeek' }])
+      expect(ctx.get('llm')?.listProviders()).toEqual([{ id: 'deepseek-official', name: 'DeepSeek' }])
       await server.shutdown()
     } finally {
       await ctx.fiber.dispose()
@@ -871,7 +871,7 @@ describe('HarnessSdkServer', () => {
         const server = new HarnessSdkServer(ctx, new FakeTransport())
         await expect(server.initialize({
           cwd: storageDir,
-          provider: 'deepseek',
+          provider: 'deepseek-official',
           model: 'model',
           maxTokens,
         })).rejects.toThrow('initialize maxTokens must be a positive safe integer')
diff --git a/packages/ui/permission/src/index.ts b/packages/ui/permission/src/index.ts
index 597d17199a..5c18a2b560 100644
--- a/packages/ui/permission/src/index.ts
+++ b/packages/ui/permission/src/index.ts
@@ -211,16 +211,19 @@ export class PermissionService extends Service {
         name: 'permission',
         description: 'Switch the permission preset (sandbox mode + approval policy)',
         input: { hint: '<preset>' },
+        // No settlement text labels its value with this command's own name: a
+        // surface that renders `name · text` (the web command row) would
+        // otherwise read `permission · Permission preset: workspace-write.`
         handler: ({ agent, rawInput }) => {
           const name = rawInput.trim()
           if (name === '') {
-            return { kind: 'success', text: `Current permission preset: ${this.current(agent.session.events)}. Available: ${this.names.join(', ')}.` }
+            return { kind: 'success', text: `current preset ${this.current(agent.session.events)} (available: ${this.names.join(', ')})` }
           }
           if (!this.names.includes(name)) {
-            return { kind: 'error', text: `unknown permission preset "${name}" (available: ${this.names.join(', ')})` }
+            return { kind: 'error', text: `unknown preset "${name}" (available: ${this.names.join(', ')})` }
           }
           this.set(agent.session, name)
-          return { kind: 'success', text: `Permission preset: ${name}.` }
+          return { kind: 'success', text: `preset ${name}` }
         },
       })
     })
diff --git a/packages/ui/permission/tests/projection.spec.ts b/packages/ui/permission/tests/projection.spec.ts
index 2046adb6a1..1649fe7077 100644
--- a/packages/ui/permission/tests/projection.spec.ts
+++ b/packages/ui/permission/tests/projection.spec.ts
@@ -89,7 +89,7 @@ describe('/permission command', () => {
     const { ctx, session } = await harness()
     const agent = await agentFor(ctx, session)
     const execution = await ctx.commands.execute(agent, '/permission danger-full-access', new AbortController().signal)
-    expect(execution?.result).toEqual({ kind: 'success', text: 'Permission preset: danger-full-access.' })
+    expect(execution?.result).toEqual({ kind: 'success', text: 'preset danger-full-access' })
     expect(ctx.permission.current(session.events)).toBe('danger-full-access')
     const run = session.events.find(event => event.type === 'command/run')
     expect(run?.data).toMatchObject({ name: 'permission', args: ' danger-full-access' })
@@ -101,7 +101,7 @@ describe('/permission command', () => {
     const execution = await ctx.commands.execute(agent, '/permission', new AbortController().signal)
     expect(execution?.result).toEqual({
       kind: 'success',
-      text: 'Current permission preset: workspace-write. Available: workspace-write, danger-full-access.',
+      text: 'current preset workspace-write (available: workspace-write, danger-full-access)',
     })
     expect(session.events.filter(event => event.type === 'permission/preset')).toHaveLength(0)
   })
@@ -110,7 +110,13 @@ describe('/permission command', () => {
     const { ctx, session } = await harness()
     const agent = await agentFor(ctx, session)
     const execution = await ctx.commands.execute(agent, '/permission yolo', new AbortController().signal)
-    expect(execution?.result).toMatchObject({ kind: 'error' })
+    // The error text carries the same no-self-labelling rule as the success
+    // texts: `permission · unknown preset "yolo" (…)`, not `unknown permission
+    // preset`, which the row's own title already says.
+    expect(execution?.result).toEqual({
+      kind: 'error',
+      text: 'unknown preset "yolo" (available: workspace-write, danger-full-access)',
+    })
     expect(session.events.filter(event => event.type !== 'command/run' && event.type !== 'command/done')).toHaveLength(0)
   })
 })
diff --git a/packages/ui/tui/src/components/transcript.ts b/packages/ui/tui/src/components/transcript.ts
index 58d3d6a178..774e982f81 100644
--- a/packages/ui/tui/src/components/transcript.ts
+++ b/packages/ui/tui/src/components/transcript.ts
@@ -389,10 +389,23 @@ export class ToolCardComponent implements Component {
     const glyph = this.result === undefined ? '○' : '●'
     const rawBody = this.renderBody()
     const view = this.resultView ?? this.callView
-    const genericContent = view.card === 'generic' ? view.content ?? this.result?.content : undefined
-    const unknownXml = this.definition === undefined && genericContent !== undefined
+    // A generic card's own content, or a web card's fallback to the raw result
+    // content (the `web` view carries no `content` copy), both render as one dim
+    // Markdown block below, so links/lists/headings keep the unified dim styling
+    // rather than reading as bare text. Terminal and diff cards own their body
+    // styling, so they are excluded (mirrors renderBody's post-terminal/diff fallback).
+    const markdownContent = view.card === 'generic'
+      ? view.content ?? this.result?.content
+      : view.card === 'web'
+        // A web resultView is only assigned alongside this.result (the result
+        // handler sets both) and the pending callView is never a web card, so
+        // the optional-chain undefined side is unreachable here.
+        /* v8 ignore next */
+        ? this.result?.content
+        : undefined
+    const unknownXml = this.definition === undefined && markdownContent !== undefined
       ? renderUnknownXml(
-        displayText(contentText(genericContent)),
+        displayText(contentText(markdownContent)),
         this.maxOutputLines,
         this.visibility === 'expanded',
         displayText,
@@ -405,7 +418,7 @@ export class ToolCardComponent implements Component {
     // A generic card renders title and result as one Markdown document, so the
     // document's own block spacing is preserved, then dims every row — the whole
     // card body reads as one dim block under the status-colored header.
-    const body = unknownXml ?? (genericContent !== undefined && rawBody.lines.length > 0
+    const body = unknownXml ?? (markdownContent !== undefined && rawBody.lines.length > 0
       ? this.dimBody(rawBody, width)
       : [...rawBody.prelude, ...rawBody.lines])
     const visibleBody = unknownXml !== undefined || this.visibility === 'expanded'
@@ -502,7 +515,11 @@ export class ToolCardComponent implements Component {
       // rather than under the dim result-output color.
       return { prelude: [...hunks, footer], lines: [] }
     }
-    const content = view.content ?? this.result?.content
+    // The web card carries no `content` copy, so a `web` result view falls back
+    // to the raw result content here (`view.card === 'generic'` narrows the
+    // generic union arm; a `web` card takes the same fallback, mirroring the
+    // `markdownContent` selection in render()).
+    const content = (view.card === 'generic' ? view.content : undefined) ?? this.result?.content
     const prelude: string[] = []
     const lines: string[] = []
     // The presenter title headlines the body now that the header is a fixed
diff --git a/packages/ui/tui/tests/harness.ts b/packages/ui/tui/tests/harness.ts
index 13b8c2ac1e..5a12bdcb98 100644
--- a/packages/ui/tui/tests/harness.ts
+++ b/packages/ui/tui/tests/harness.ts
@@ -105,10 +105,10 @@ export async function createTuiTestHarness<TerminalType extends Terminal, Exit e
   await ctx.plugin(UserInteractionService)
   await ctx.plugin(TuiPromptService)
   const catalog = options.catalog ?? {
-    providers: [{ id: 'deepseek', name: 'DeepSeek' }],
+    providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
     models: [
-      { provider: 'deepseek', id: 'deepseek-v4-flash', name: 'DeepSeek V4 Flash' },
-      { provider: 'deepseek', id: 'deepseek-v4-pro', name: 'DeepSeek V4 Pro' },
+      { provider: 'deepseek-official', id: 'deepseek-v4-flash', name: 'DeepSeek V4 Flash' },
+      { provider: 'deepseek-official', id: 'deepseek-v4-pro', name: 'DeepSeek V4 Pro' },
     ],
   }
   ctx.provide('tokenMeter', {
@@ -194,7 +194,7 @@ export async function createTuiTestHarness<TerminalType extends Terminal, Exit e
   const cancelled: AgentCancelCause[] = []
   const agent: FakeAgent = {
     id: sessionId,
-    options: options.agentOptions ?? { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    options: options.agentOptions ?? { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     session,
     status: options.status ?? 'idle',
     get acceptsNextStep() {
diff --git a/packages/ui/tui/tests/prompt.spec.ts b/packages/ui/tui/tests/prompt.spec.ts
index f212ef10e2..d18493a435 100644
--- a/packages/ui/tui/tests/prompt.spec.ts
+++ b/packages/ui/tui/tests/prompt.spec.ts
@@ -152,8 +152,8 @@ describe('TUI prompt values', () => {
 describe('TUI prompt templates', () => {
   it('interpolates values and removes separators around unavailable values', () => {
     const tokens = parseTuiPromptTemplate('${cwd} ${git/worktree} :: ${missing} ${model}')
-    const values = new Map([['cwd', '/work'], ['model', 'deepseek']])
-    expect(renderTuiPromptTemplate(tokens, name => values.get(name))).toBe('/work :: deepseek')
+    const values = new Map([['cwd', '/work'], ['model', 'deepseek-official']])
+    expect(renderTuiPromptTemplate(tokens, name => values.get(name))).toBe('/work :: deepseek-official')
   })
 
   it('keeps a trailing literal after the last value', () => {
diff --git a/packages/ui/tui/tests/snapshots/model-selector-filtered.expected.txt b/packages/ui/tui/tests/snapshots/model-selector-filtered.expected.txt
index bb79cc00fd..cdd3313c92 100644
--- a/packages/ui/tui/tests/snapshots/model-selector-filtered.expected.txt
+++ b/packages/ui/tui/tests/snapshots/model-selector-filtered.expected.txt
@@ -36,9 +36,9 @@ buffer
 14| "        │                                                                          │        "
   style 8-8 fg=bright-magenta
   style 83-83 fg=bright-magenta
-15| "        │ → deepseek/deepseek-v4-pro        DeepSeek V4 Pro                        │        "
+15| "        │ → deepseek-official/deepseek-v4-  DeepSeek V4 Pro                        │        "
   style 8-8 fg=bright-magenta
-  style 10-58 fg=bright-magenta inverse
+  style 10-41 fg=bright-magenta inverse
   style 83-83 fg=bright-magenta
 16| "        │                                                                          │        "
   style 8-8 fg=bright-magenta
diff --git a/packages/ui/tui/tests/snapshots/model-selector.expected.txt b/packages/ui/tui/tests/snapshots/model-selector.expected.txt
index 449a1c7bfc..1151163d61 100644
--- a/packages/ui/tui/tests/snapshots/model-selector.expected.txt
+++ b/packages/ui/tui/tests/snapshots/model-selector.expected.txt
@@ -36,13 +36,13 @@ buffer
 14| "        │                                                                          │        "
   style 8-8 fg=bright-magenta
   style 83-83 fg=bright-magenta
-15| "        │ → deepseek/deepseek-v4-flash      DeepSeek V4 Flash — current            │        "
+15| "        │ → deepseek-official/deepseek-v4-  DeepSeek V4 Flash — current            │        "
   style 8-8 fg=bright-magenta
-  style 10-70 fg=bright-magenta inverse
+  style 10-41 fg=bright-magenta inverse
   style 83-83 fg=bright-magenta
-16| "        │   deepseek/deepseek-v4-pro        DeepSeek V4 Pro                        │        "
+16| "        │   deepseek-official/deepseek-v4-  DeepSeek V4 Pro                        │        "
   style 8-8 fg=bright-magenta
-  style 36-58 dim
+  style 42-58 dim
   style 83-83 fg=bright-magenta
 17| "        │                                                                          │        "
   style 8-8 fg=bright-magenta
diff --git a/packages/ui/tui/tests/snapshots/model-switching.expected.txt b/packages/ui/tui/tests/snapshots/model-switching.expected.txt
index b57b3f8b23..d15e789d3e 100644
--- a/packages/ui/tui/tests/snapshots/model-switching.expected.txt
+++ b/packages/ui/tui/tests/snapshots/model-switching.expected.txt
@@ -16,8 +16,8 @@ buffer
 5| "Model wait 0.0s                                                                             "
   style 0-14 dim
 6| <blank>
-7| "Model selected: deepseek/deepseek-v4-pro. New steps will use it.                            "
-  style 0-63 dim
+7| "Model selected: deepseek-official/deepseek-v4-pro. New steps will use it.                   "
+  style 0-72 dim
 8| <blank>
 9| "/workspace/project (tui-staging)  deepseek-v4-pro  ↑0 ↓0  0% context"
   style 0-17 fg=bright-magenta bold
diff --git a/packages/ui/tui/tests/snapshots/resume-sessions-all-workspaces.expected.txt b/packages/ui/tui/tests/snapshots/resume-sessions-all-workspaces.expected.txt
index 1e68714d7e..63ca211c89 100644
--- a/packages/ui/tui/tests/snapshots/resume-sessions-all-workspaces.expected.txt
+++ b/packages/ui/tui/tests/snapshots/resume-sessions-all-workspaces.expected.txt
@@ -31,15 +31,15 @@ buffer
 13| "    unavailable: current session                                                            "
   style 2-31 fg=yellow
 14| "    Other workspace work                                                                    "
-15| "    2024-02-02T00:00:08.000Z · turn 1: completed · deepseek/deepseek-v4-pro                 "
-  style 2-74 dim
+15| "    2024-02-02T00:00:08.000Z · turn 1: completed · deepseek-official/deepseek-v4-pro        "
+  style 2-83 dim
 16| "    persisted · elsewhere-session                                                           "
   style 2-32 dim
 17| "    workspace /workspace/other                                                              "
   style 2-29 dim
 18| "    Resume selector design                                                                  "
-19| "    2024-01-01T00:00:08.000Z · turn 1: completed · deepseek/deepseek-v4-pro                 "
-  style 2-74 dim
+19| "    2024-01-01T00:00:08.000Z · turn 1: completed · deepseek-official/deepseek-v4-pro        "
+  style 2-83 dim
 20| "    persisted · earlier-session                                                             "
   style 2-30 dim
 21| "    workspace /workspace/project                                                            "
diff --git a/packages/ui/tui/tests/snapshots/resume-sessions.expected.txt b/packages/ui/tui/tests/snapshots/resume-sessions.expected.txt
index fdd13c23e9..46452aebdb 100644
--- a/packages/ui/tui/tests/snapshots/resume-sessions.expected.txt
+++ b/packages/ui/tui/tests/snapshots/resume-sessions.expected.txt
@@ -29,8 +29,8 @@ buffer
 12| "    unavailable: current session                                                            "
   style 2-31 fg=yellow
 13| "    Resume selector design                                                                  "
-14| "    2024-01-01T00:00:08.000Z · turn 1: completed · deepseek/deepseek-v4-pro                 "
-  style 2-74 dim
+14| "    2024-01-01T00:00:08.000Z · turn 1: completed · deepseek-official/deepseek-v4-pro        "
+  style 2-83 dim
 15| "    persisted · earlier-session                                                             "
   style 2-30 dim
 16| "                                                                                            "
diff --git a/packages/ui/tui/tests/snapshots/status-diagnostics-narrow.expected.txt b/packages/ui/tui/tests/snapshots/status-diagnostics-narrow.expected.txt
index b35a53ed0d..4c9a87c57d 100644
--- a/packages/ui/tui/tests/snapshots/status-diagnostics-narrow.expected.txt
+++ b/packages/ui/tui/tests/snapshots/status-diagnostics-narrow.expected.txt
@@ -1,7 +1,7 @@
-terminal 56x36 buffer=normal length=44 base=8 viewport=8
+terminal 56x36 buffer=normal length=45 base=9 viewport=9
 lifecycle started=1 stopped=0 progress=inactive
 title "Inspect session diagnostics — DSH snapshot"
-cursor hidden column=7 viewportRow=35 bufferRow=43
+cursor hidden column=7 viewportRow=35 bufferRow=44
 buffer
 0| " DEEPSEEK HARNESS"
   style 1-8 fg=bright-magenta bold
@@ -37,84 +37,87 @@ buffer
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim
-15| "│  Model:      deepseek/deepseek-v4-pro (effort        │"
-  style 0-0 dim
-  style 3-12 dim
-  style 40-55 dim
-16| "│              default; reasoning blocks shown)        │"
-  style 0-0 dim
-  style 15-46 dim
-  style 55-55 dim
-17| "│                                                      │"
-  style 0-0 dim
-  style 55-55 dim
-18| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1   │"
+15| "│  Model:      deepseek-official/deepseek-v4-pro       │"
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim
-19| "│              tool call                               │"
+16| "│              (effort default; reasoning blocks       │"
+  style 0-0 dim
+  style 15-55 dim
+17| "│              shown)                                  │"
+  style 0-0 dim
+  style 15-20 dim
+  style 55-55 dim
+18| "│                                                      │"
   style 0-0 dim
   style 55-55 dim
-20| "│                                                      │"
-  style 0-0 dim
-  style 55-55 dim
-21| "│  Tokens:     1,250 input + 340 output                │"
+19| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1   │"
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim
-22| "│  KV cache:   [███████████░░░░░] 67% hit (3,000 read  │"
+20| "│              tool call                               │"
+  style 0-0 dim
+  style 55-55 dim
+21| "│                                                      │"
+  style 0-0 dim
+  style 55-55 dim
+22| "│  Tokens:     1,250 input + 340 output                │"
+  style 0-0 dim
+  style 3-12 dim
+  style 55-55 dim
+23| "│  KV cache:   [███████████░░░░░] 67% hit (3,000 read  │"
   style 0-0 dim
   style 3-12 dim
   style 15-15 dim
   style 16-26 fg=bright-magenta
   style 27-32 dim
   style 55-55 dim
-23| "│              + 250 write)                            │"
+24| "│              + 250 write)                            │"
   style 0-0 dim
   style 55-55 dim
-24| "│  Context:    [█████░░░░░░░░░░░] 33% used (42,000 /   │"
+25| "│  Context:    [█████░░░░░░░░░░░] 33% used (42,000 /   │"
   style 0-0 dim
   style 3-12 dim
   style 15-15 dim
   style 16-20 fg=bright-magenta
   style 21-32 dim
   style 55-55 dim
-25| "│              128,000)                                │"
+26| "│              128,000)                                │"
   style 0-0 dim
   style 55-55 dim
-26| "│                                                      │"
+27| "│                                                      │"
   style 0-0 dim
   style 55-55 dim
-27| "│  Created:    2026-07-22 09:10:11 UTC                 │"
+28| "│  Created:    2026-07-22 09:10:11 UTC                 │"
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim
-28| "│  Active:     2026-07-22 09:10:11 UTC                 │"
+29| "│  Active:     2026-07-22 09:10:11 UTC                 │"
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim
-29| "╰──────────────────────────────────────────────────────╯"
+30| "╰──────────────────────────────────────────────────────╯"
   style 0-55 dim
-30| <blank>
-31| "System prompt                                           "
+31| <blank>
+32| "System prompt                                           "
   style 0-12 fg=bright-magenta bold
-32| "You are an AI agent powered by the DeepSeek Harness SDK."
-33| "                                                        "
-34| "Paths prefixed with @ are files explicitly referenced by"
-35| "the user. Use the read tool when their contents are     "
-36| "needed; do not claim to have inspected a file before    "
-37| "reading it.                                             "
-38| <blank>
-39| "Registered tools                                        "
+33| "You are an AI agent powered by the DeepSeek Harness SDK."
+34| "                                                        "
+35| "Paths prefixed with @ are files explicitly referenced by"
+36| "the user. Use the read tool when their contents are     "
+37| "needed; do not claim to have inspected a file before    "
+38| "reading it.                                             "
+39| <blank>
+40| "Registered tools                                        "
   style 0-15 fg=bright-magenta bold
-40| "read, write                                             "
-41| <blank>
-42| "/workspace/project (tui-staging)  deepseek-v4-pro  ↑1.3k"
+41| "read, write                                             "
+42| <blank>
+43| "/workspace/project (tui-staging)  deepseek-v4-pro  ↑1.3k"
   style 0-17 fg=bright-magenta bold
   style 18-31 dim
   style 34-48 dim
   style 51-55 dim
-43| " dsh >                                                  "
+44| " dsh >                                                  "
   style 1-3 fg=bright-magenta bold
   style 5-6 dim
   style 7-7 inverse
diff --git a/packages/ui/tui/tests/snapshots/status-diagnostics.expected.txt b/packages/ui/tui/tests/snapshots/status-diagnostics.expected.txt
index 70ec6a3a04..98ae28fc60 100644
--- a/packages/ui/tui/tests/snapshots/status-diagnostics.expected.txt
+++ b/packages/ui/tui/tests/snapshots/status-diagnostics.expected.txt
@@ -21,68 +21,68 @@ buffer
   style 0-2 fg=bright-magenta bold underline
 9| "inspect this session                                                                        "
 10| <blank>
-11| "╭─ Session status ───────────────────────────────────────────────────────────────╮"
+11| "╭─ Session status ────────────────────────────────────────────────────────────────────────╮"
   style 0-2 dim
   style 3-16 fg=bright-magenta bold
-  style 17-81 dim
-12| "│  Session:    main-session                                                      │"
+  style 17-90 dim
+12| "│  Session:    main-session                                                               │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-13| "│  Title:      Inspect session diagnostics                                       │"
+  style 90-90 dim
+13| "│  Title:      Inspect session diagnostics                                                │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-14| "│  Directory:  /workspace/project                                                │"
+  style 90-90 dim
+14| "│  Directory:  /workspace/project                                                         │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-15| "│  Model:      deepseek/deepseek-v4-pro (effort default; reasoning blocks shown) │"
+  style 90-90 dim
+15| "│  Model:      deepseek-official/deepseek-v4-pro (effort default; reasoning blocks shown) │"
   style 0-0 dim
   style 3-12 dim
-  style 40-79 dim
-  style 81-81 dim
-16| "│                                                                                │"
+  style 49-88 dim
+  style 90-90 dim
+16| "│                                                                                         │"
   style 0-0 dim
-  style 81-81 dim
-17| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1 tool call                   │"
+  style 90-90 dim
+17| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1 tool call                            │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-18| "│                                                                                │"
+  style 90-90 dim
+18| "│                                                                                         │"
   style 0-0 dim
-  style 81-81 dim
-19| "│  Tokens:     1,250 input + 340 output                                          │"
+  style 90-90 dim
+19| "│  Tokens:     1,250 input + 340 output                                                   │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-20| "│  KV cache:   [███████████░░░░░] 67% hit (3,000 read + 250 write)               │"
+  style 90-90 dim
+20| "│  KV cache:   [███████████░░░░░] 67% hit (3,000 read + 250 write)                        │"
   style 0-0 dim
   style 3-12 dim
   style 15-15 dim
   style 16-26 fg=bright-magenta
   style 27-32 dim
-  style 81-81 dim
-21| "│  Context:    [█████░░░░░░░░░░░] 33% used (42,000 / 128,000)                    │"
+  style 90-90 dim
+21| "│  Context:    [█████░░░░░░░░░░░] 33% used (42,000 / 128,000)                             │"
   style 0-0 dim
   style 3-12 dim
   style 15-15 dim
   style 16-20 fg=bright-magenta
   style 21-32 dim
-  style 81-81 dim
-22| "│                                                                                │"
+  style 90-90 dim
+22| "│                                                                                         │"
   style 0-0 dim
-  style 81-81 dim
-23| "│  Created:    2026-07-22 09:10:11 UTC                                           │"
+  style 90-90 dim
+23| "│  Created:    2026-07-22 09:10:11 UTC                                                    │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-24| "│  Active:     2026-07-22 09:10:11 UTC                                           │"
+  style 90-90 dim
+24| "│  Active:     2026-07-22 09:10:11 UTC                                                    │"
   style 0-0 dim
   style 3-12 dim
-  style 81-81 dim
-25| "╰────────────────────────────────────────────────────────────────────────────────╯"
-  style 0-81 dim
+  style 90-90 dim
+25| "╰─────────────────────────────────────────────────────────────────────────────────────────╯"
+  style 0-90 dim
 26| <blank>
 27| "System prompt                                                                               "
   style 0-12 fg=bright-magenta bold
diff --git a/packages/ui/tui/tests/tui.snapshot.ts b/packages/ui/tui/tests/tui.snapshot.ts
index b93cf73308..18f0a9a793 100644
--- a/packages/ui/tui/tests/tui.snapshot.ts
+++ b/packages/ui/tui/tests/tui.snapshot.ts
@@ -554,7 +554,7 @@ describe('TUI terminal-state snapshots', () => {
           description: 'Audit terminal states from independent angles',
           phases: [
             { title: 'Inspect', detail: 'Map renderer branches' },
-            { title: 'Verify', detail: 'Challenge missing states', provider: 'deepseek', model: 'deepseek-v4-flash' },
+            { title: 'Verify', detail: 'Challenge missing states', provider: 'deepseek-official', model: 'deepseek-v4-flash' },
           ],
         },
         args: { packages: ['ui/tui', 'workflow/tool-workflow'] },
@@ -866,13 +866,13 @@ describe('TUI terminal-state snapshots', () => {
         { type: 'turn/start', seq: 0, time: Date.parse(`${day}T00:00:01Z`), data: { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } } },
         { type: 'user/message', seq: 1, time: Date.parse(`${day}T00:00:02Z`), data: createUserMessage({ content: [{ type: 'text', text: 'restore the selector' }], source: { kind: 'user' } }), surfaceOp: 'append' },
         { type: 'step/start', seq: 2, time: Date.parse(`${day}T00:00:03Z`), data: { turn: 1, step: 1 } },
-        { type: 'request/header', seq: 3, time: Date.parse(`${day}T00:00:04Z`), data: { header: { config: { provider: 'deepseek', model: 'deepseek-v4-pro' } }, reason: 'initial' } },
+        { type: 'request/header', seq: 3, time: Date.parse(`${day}T00:00:04Z`), data: { header: { config: { provider: 'deepseek-official', model: 'deepseek-v4-pro' } }, reason: 'initial' } },
         { type: 'assistant/message', seq: 4, time: Date.parse(`${day}T00:00:05Z`), data: {
           turn: 1, step: 1,
           message: createMessage({
             role: 'assistant',
             content: [{ type: 'text', text: 'ready' }],
-            source: { kind: 'model', provider: 'deepseek', model: 'deepseek-v4-pro' },
+            source: { kind: 'model', provider: 'deepseek-official', model: 'deepseek-v4-pro' },
           }),
         }, surfaceOp: 'append' },
         { type: 'step/end', seq: 5, time: Date.parse(`${day}T00:00:06Z`), data: { turn: 1, step: 1 } },
@@ -913,7 +913,7 @@ describe('TUI terminal-state snapshots', () => {
     const harness = await setupSnapshot({
       contextWindow: 128_000,
       contextTokens: 42_000,
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-pro' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-pro' },
       tools: {
         read: {
           name: 'read',
diff --git a/packages/ui/tui/tests/tui.spec.ts b/packages/ui/tui/tests/tui.spec.ts
index 445487065f..79aa6f4f97 100644
--- a/packages/ui/tui/tests/tui.spec.ts
+++ b/packages/ui/tui/tests/tui.spec.ts
@@ -247,7 +247,7 @@ describe('goodbye message and /resume', () => {
     ({ version: 0, id: SessionId(id), createdAt, cwd })
   const resumeEvents = (
     title: string,
-    provider = 'deepseek',
+    provider = 'deepseek-official',
     time = 100,
     reason: TurnEndReason = { kind: 'completed' },
   ): SessionEvent[] => [
@@ -319,8 +319,8 @@ describe('goodbye message and /resume', () => {
       sessionPersistence: {
         list: async () => [older, newer, header('foreign-session', 3000, '/elsewhere')],
         load: async id => id === newer.id
-          ? { meta: newer, events: resumeEvents('Newer product work', 'deepseek', 300) }
-          : { meta: older, events: resumeEvents('Older investigation', 'deepseek', 100) },
+          ? { meta: newer, events: resumeEvents('Newer product work', 'deepseek-official', 300) }
+          : { meta: older, events: resumeEvents('Older investigation', 'deepseek-official', 100) },
       },
     })
     result.terminal.send('/resume')
@@ -419,7 +419,7 @@ describe('goodbye message and /resume', () => {
         list: async () => targets,
         load: async id => ({
           meta: targets.find(target => target.id === id)!,
-          events: resumeEvents(`Paged ${id.slice('paged-'.length)}`, 'deepseek', 1000 - Number(id.slice('paged-'.length)) * 10),
+          events: resumeEvents(`Paged ${id.slice('paged-'.length)}`, 'deepseek-official', 1000 - Number(id.slice('paged-'.length)) * 10),
         }),
       },
     })
@@ -475,7 +475,7 @@ describe('goodbye message and /resume', () => {
       cwd: '/workspace',
       sessionPersistence: {
         list: async () => [target],
-        load: async () => ({ meta: target, events: resumeEvents(`Turn ${label}`, 'deepseek', 100, reason) }),
+        load: async () => ({ meta: target, events: resumeEvents(`Turn ${label}`, 'deepseek-official', 100, reason) }),
       },
     })
     result.terminal.send('/resume')
@@ -711,7 +711,7 @@ describe('goodbye message and /resume', () => {
   it('falls back to assistant provenance and header creation time for sparse logs', async () => {
     const assistantOnly = header('assistant-route', 20, '/workspace')
     const empty = header('empty-log', 10, '/workspace')
-    const events = resumeEvents('Assistant route', 'deepseek')
+    const events = resumeEvents('Assistant route', 'deepseek-official')
       .filter(event => event.type !== 'request/header')
       .map((event, seq) => ({ ...event, seq })) as SessionEvent[]
     const result = await setup({
@@ -726,7 +726,7 @@ describe('goodbye message and /resume', () => {
     result.terminal.send('/resume')
     result.terminal.send('\r')
     await tick(); await tick()
-    expect(result.terminal.output).toContain('deepseek/model-1')
+    expect(result.terminal.output).toContain('deepseek-official/model-1')
     expect(result.terminal.output).toContain(new Date(empty.createdAt).toISOString())
     await dispose(result)
   })
@@ -2397,7 +2397,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
       contextWindow: 128_000,
       contextTokens: 42_000,
       config: { showReasoning: false },
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-pro' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-pro' },
       tools: {
         read: {
           name: 'read', description: 'Read a file', parameters: {},
@@ -2445,7 +2445,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
     expect(result.terminal.output).toContain('main-session')
     expect(result.terminal.output).toContain('Inspect status \\x1b]2;unsafe\\x07')
     expect(result.terminal.output).toContain('/workspace/status')
-    expect(result.terminal.output).toContain('deepseek/deepseek-v4-pro (effort default; reasoning blocks')
+    expect(result.terminal.output).toContain('deepseek-official/deepseek-v4-pro (effort default; reasoning blocks')
     expect(result.terminal.output).toContain('hidden)')
     // 6 domain events + the /status invocation's own command/run (open turn: joined directly).
     expect(result.terminal.output).toContain('running · 7 events · 1 turn · 1 step · 2 tool calls')
@@ -3601,7 +3601,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
 
     const failed = await setup({
       catalog: {
-        providers: [{ id: 'deepseek', name: 'DeepSeek' }],
+        providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
         models: [],
         listModels: () => Promise.reject(new Error('catalog offline')),
         resolveModelInfo: () => Promise.reject(new Error('capacity offline')),
@@ -3617,8 +3617,8 @@ describe('pi-tui chat lifecycle and transcript', () => {
 
     const reasoningFailed = await setup({
       catalog: {
-        providers: [{ id: 'deepseek', name: 'DeepSeek' }],
-        models: [{ provider: 'deepseek', id: 'model-1', name: 'Model One' }],
+        providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
+        models: [{ provider: 'deepseek-official', id: 'model-1', name: 'Model One' }],
         resolveModelInfo: () => Promise.reject(new Error('reasoning metadata offline')),
       },
     })
@@ -3634,7 +3634,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
     const deferred = Promise.withResolvers<never[]>()
     const result = await setup({
       catalog: {
-        providers: [{ id: 'deepseek', name: 'DeepSeek' }],
+        providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
         models: [],
         listModels: () => deferred.promise,
       },
@@ -3650,7 +3650,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
     const rejected = Promise.withResolvers<never[]>()
     const rejectedResult = await setup({
       catalog: {
-        providers: [{ id: 'deepseek', name: 'DeepSeek' }],
+        providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
         models: [],
         listModels: () => rejected.promise,
       },
@@ -3667,7 +3667,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
     const contextResult = await setup({
       contextTokens: 99,
       catalog: {
-        providers: [{ id: 'deepseek', name: 'DeepSeek' }],
+        providers: [{ id: 'deepseek-official', name: 'DeepSeek' }],
         models: [],
         resolveModelInfo: () => context.promise.then(value => ({ context: value })),
       },
@@ -4376,6 +4376,14 @@ describe('tool cards and surface replay', () => {
       name: 'knownXml', description: '', parameters: {}, output: UNUSED_TOOL_OUTPUT, execute: async () => [],
       presentCall: () => ({ card: 'generic', title: 'Known XML' }),
     },
+    // A web card carries no `content` copy, so it falls back to the raw result
+    // content, which must still render through the dim Markdown path (bold
+    // markers stripped) rather than as bare text.
+    webCard: {
+      name: 'webCard', description: '', parameters: {}, output: UNUSED_TOOL_OUTPUT, execute: async () => [],
+      presentCall: () => ({ card: 'generic', title: 'Fetch page', kind: 'fetch' }),
+      presentResult: () => ({ card: 'web', kind: 'fetch', title: 'https://a.test', url: 'https://a.test', statusCode: 200, truncated: false }),
+    },
   }
 
   it('uses terminal, diff, generic, fallback, and collapsed tool presentations', async () => {
@@ -4396,6 +4404,7 @@ describe('tool cards and surface replay', () => {
       ['c11', 'terminalResult', '{}'],
       ['c12', 'symbolic', '{}'],
       ['c13', 'knownXml', '{}'],
+      ['c16', 'webCard', '{}'],
     ] as const
     appendAssistant(result.session, [
       { type: 'text', text: 'Calling tools' },
@@ -4489,6 +4498,14 @@ describe('tool cards and surface replay', () => {
         isError: false,
       }),
     }, { surfaceOp: 'append' })
+    result.session.append('tool/result', {
+      turn: 1, step: 1,
+      message: createToolResultMessage({
+        callId: 'c16' as never,
+        content: [{ type: 'text', text: 'Fetched **body** text' }],
+        isError: false,
+      }),
+    }, { surfaceOp: 'append' })
     result.session.append('tool/result', {
       turn: 1,
       step: 1,
@@ -4538,6 +4555,11 @@ describe('tool cards and surface replay', () => {
     expect(output).toContain('Empty card')
     expect(output).toContain('converted terminal')
     expect(output).toContain('<known><value>literal</value></known>')
+    // A web card carries no `content` copy, so it falls back to the raw result
+    // content, which still renders through the dim Markdown path: the bold
+    // markers are stripped rather than shown literally.
+    expect(output).toContain('Fetched body text')
+    expect(output).not.toContain('Fetched **body** text')
     expect(output).toContain('path: /tmp/a.txt')
     expect(output).toContain('line (number="1"): hello')
     expect(output).not.toContain('<result>')
diff --git a/packages/util/README.i18n.yaml b/packages/util/README.i18n.yaml
index 8bd1ff35b2..add6070a27 100644
--- a/packages/util/README.i18n.yaml
+++ b/packages/util/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/util/README.md
-README.md: 605c3dd0beebc16109e8e6bc944ea722a60975c0
-README.zh.md: 5c66ded33a36079f80965cf466449843e07511f0
+README.md: 46904aba70c7cf0f98bb75cce79d97bb12b950a9
+README.zh.md: 59a2dcf7926c12d7005446393cadfd8b0be88f77
diff --git a/packages/util/README.md b/packages/util/README.md
index 605c3dd0be..46904aba70 100644
--- a/packages/util/README.md
+++ b/packages/util/README.md
@@ -10,6 +10,7 @@ Zero-dependency primitives shared across the other groups. A package lands here
 | `paths/` | Canonical single-root `DSH_HOME` resolution plus shared filesystem path constants and helpers for harness user data (no harness deps) |
 | `timeout/` | The timing/classification half of a timeout — `clampTimeout`/`deadline`/`timeoutOf`/`TimeoutReason` (pure functions, no harness deps); termination stays in each capability |
 | `retention/` | Bounded model-facing output — `ItemRetainer`/`TextRetainer` + neutral notice helpers (pure, no harness deps); business semantics stay in each tool |
+| `atomic-write/` | Atomic file replacement — `writeFileAtomic` (exclusive-create temp + rename carrying the caller-stated mode); shared by the settings and credentials stores |
 | `native-command/` | No-shell `execFile` runner for host-native OS integrations — utf8 capture, abort propagation, Windows hide (no harness deps); command choice stays in each caller |
 
 `dsh-brand` is the canonical case: it owns ONLY the `Branded<B>` helper, so a capability package can brand the ids it owns (`dsh-tasks`'s `TaskId`, `dsh-session`'s `SessionId`, …) by depending on `dsh-brand` alone, without pulling in an unrelated package just to reach `Branded`.
diff --git a/packages/util/README.zh.md b/packages/util/README.zh.md
index 5c66ded33a..59a2dcf792 100644
--- a/packages/util/README.zh.md
+++ b/packages/util/README.zh.md
@@ -10,6 +10,7 @@
 | `paths/` | 规范的单根 `DSH_HOME` 解析，以及 harness 用户数据的共享文件系统路径常量和辅助工具（无 harness 依赖） |
 | `timeout/` | 超时的时序/分类部分：`clampTimeout`/`deadline`/`timeoutOf`/`TimeoutReason`（纯函数，无 harness 依赖）；终止机制保留在各个功能中 |
 | `retention/` | 有界的面向模型输出：`ItemRetainer`/`TextRetainer` 加上中性通知辅助工具（纯工具，无 harness 依赖）；业务语义保留在各个工具中 |
+| `atomic-write/` | 原子文件替换：`writeFileAtomic`（独占创建临时文件 + 携带调用方所声明 mode 的 rename）；由设置与凭据存储共用 |
 | `native-command/` | 宿主原生 OS 集成的免 shell `execFile` 运行器——utf8 捕获、abort 传播、Windows 窗口隐藏（无 harness 依赖）；命令选择保留在各调用方 |
 
 `dsh-brand` 是规范示例：它只负责 `Branded<B>` 辅助工具，因此功能包可以为自己拥有的 id 添加品牌（`dsh-tasks` 的 `TaskId`、`dsh-session` 的 `SessionId` 等），而只需依赖 `dsh-brand`，无需仅为使用 `Branded` 而引入不相关的包。
diff --git a/packages/util/atomic-write/README.i18n.yaml b/packages/util/atomic-write/README.i18n.yaml
new file mode 100644
index 0000000000..ffa4d7ccbb
--- /dev/null
+++ b/packages/util/atomic-write/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/util/atomic-write/README.md
+README.md: be9f896eb24e28aedc2c04858da8b8da9da548dc
+README.zh.md: 19a067dc84f12d334e5c31dda58e7cf78dac51f9
diff --git a/packages/util/atomic-write/README.md b/packages/util/atomic-write/README.md
new file mode 100644
index 0000000000..be9f896eb2
--- /dev/null
+++ b/packages/util/atomic-write/README.md
@@ -0,0 +1,45 @@
+# dsh-atomic-write
+
+English | [中文](README.zh.md)
+
+Zero-dependency atomic file replacement shared by file-backed stores that must never leave partial, symlink-hijacked, or wider-than-intended content on disk — the user-settings document (`dsh-settings-local`) and the credentials store (`dsh-credentials-local`).
+
+## Surface
+
+```ts
+import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+
+declare const text: string
+declare const render: (previous: string) => string
+
+await writeFileAtomic('/home/u/.dsh/settings.yaml', text, { mode: 0o600 })
+
+// Read-modify-write against the same file from several processes.
+await withFileLock('/home/u/.dsh/settings.yaml', async () => {
+  await writeFileAtomic('/home/u/.dsh/settings.yaml', render(text), { mode: 0o600 })
+})
+```
+
+`writeFileAtomic` commits one already-rendered string. The contract, in the order failures would exploit it:
+
+- **Exclusive-create temp** (`wx`, random suffix): the open refuses to follow a symlink planted at a guessable temp path.
+- **The fresh inode carries `mode` through the rename**: replacing a wider-permission file narrows it without a chmod race. `mode` is required so the permission decision stays visible at every call site (subject to the process umask, like every fresh inode).
+- **`rename` replaces a symlinked target itself**, never writing through to its referent.
+- **Same-directory sibling** keeps the rename on one filesystem, so the swap stays atomic.
+- Parent directories are created; on any failure the temp is removed and the failure rethrown; readers observe either the old or the new complete content.
+
+`withFileLock` serializes the writers of one file across processes, for the read-render-commit cycles a bare atomic commit cannot make safe on its own. The lock is a `wx`-created `<filename>.lock` sibling, so readers never contend; waiters back off exponentially and fail with a timeout rather than block forever. A lock older than the stale age is treated as a crashed holder and broken — see [Known Limitations and Deferred Work](#known-limitations-and-deferred-work) for what that costs.
+
+## Model Experience
+
+None, as this is a pure filesystem primitive; nothing here reaches a model request.
+
+#### KV Cache effect
+
+None; nothing here enters a request prefix.
+
+## Known Limitations and Deferred Work
+
+- **Atomic, not durable** — no `fsync` of the file or its directory, so after a crash the rename may be observed unwound. The file-backed stores here re-read and republish on boot, keeping durability the caller's policy.
+- **String content only** — no `Buffer` or stream form until a consumer needs one.
+- **The lock takes over by age, not by ownership** (`TODO(settings-lock-ownership)`) — a holder slower than the stale age has its lock broken by a waiter, and release unlinks the path unconditionally, so a slow writer can remove a successor's lock. Two writers can then overlap and one cycle's result be lost. The stale age is set well above any write this repo performs, so the exposure is a paused or swapped-out process; ownership-safe acquisition and release is the fix.
diff --git a/packages/util/atomic-write/README.zh.md b/packages/util/atomic-write/README.zh.md
new file mode 100644
index 0000000000..19a067dc84
--- /dev/null
+++ b/packages/util/atomic-write/README.zh.md
@@ -0,0 +1,45 @@
+# dsh-atomic-write
+
+[English](README.md) | 中文
+
+零依赖的原子文件替换，供绝不允许在磁盘上留下不完整、被符号链接劫持或权限过宽内容的文件型存储共用：用户设置文档（`dsh-settings-local`）与凭据存储（`dsh-credentials-local`）。
+
+## 接口面
+
+```ts
+import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+
+declare const text: string
+declare const render: (previous: string) => string
+
+await writeFileAtomic('/home/u/.dsh/settings.yaml', text, { mode: 0o600 })
+
+// Read-modify-write against the same file from several processes.
+await withFileLock('/home/u/.dsh/settings.yaml', async () => {
+  await writeFileAtomic('/home/u/.dsh/settings.yaml', render(text), { mode: 0o600 })
+})
+```
+
+`writeFileAtomic` 提交一份已经渲染好的字符串。契约按故障利用它的先后顺序列出：
+
+- **独占创建临时文件**（`wx` + 随机后缀）：open 拒绝跟随预先埋在可猜测临时路径上的符号链接。
+- **全新 inode 携带 `mode` 走完 rename**：替换权限过宽的旧文件时直接收窄，不存在 chmod 竞态。`mode` 为必填，让权限决策始终可见于每个调用点（与所有新建 inode 一样受进程 umask 影响）。
+- **`rename` 替换的是符号链接目标本身**，绝不写穿到其指向的文件。
+- **同目录兄弟文件**保证 rename 落在同一文件系统上，交换保持原子。
+- 自动创建父目录；任何失败都会移除临时文件并重新抛出该失败；读取方只会观察到旧内容或完整的新内容。
+
+`withFileLock` 跨进程串行化同一文件的写入方，服务于单靠原子提交无法保证安全的读-渲染-提交循环。锁是以 `wx` 创建的同目录 `<filename>.lock`，因此读取方从不参与竞争；等待方按指数退避，超时即失败而非无限阻塞。超过陈旧时限的锁被视为持有者已崩溃并被打破——其代价见[Known Limitations and Deferred Work](#known-limitations-and-deferred-work)。
+
+## Model Experience
+
+无：本包是纯文件系统原语，此处没有任何内容会到达模型请求。
+
+#### KV Cache effect
+
+无；此处没有任何内容会进入请求前缀。
+
+## Known Limitations and Deferred Work
+
+- **原子但不保证持久**——不对文件或其所在目录做 `fsync`，因此崩溃后可能观察到 rename 被回退。此处的文件型存储在启动时重新读取并重新发布，把持久性留作调用方的策略。
+- **仅支持字符串内容**——在有消费方需要之前，不提供 `Buffer` 或流式形态。
+- **锁按时长而非归属接管**（`TODO(settings-lock-ownership)`）——持有者若慢于陈旧时限，其锁会被等待方打破，而释放又无条件删除该路径，因此慢写入方可能删掉后继者的锁。两个写入方随之重叠，一轮循环的结果可能丢失。陈旧时限远高于本仓库的任何一次写入，因此暴露面是被暂停或被换出的进程；修法是按归属安全地获取与释放。
diff --git a/packages/util/atomic-write/package.json b/packages/util/atomic-write/package.json
new file mode 100644
index 0000000000..147ecb1e05
--- /dev/null
+++ b/packages/util/atomic-write/package.json
@@ -0,0 +1,37 @@
+{
+  "name": "@deepseek-ai/dsh-atomic-write",
+  "description": "Zero-dependency atomic file replacement: exclusive-create random-suffix temp + rename carrying the caller-stated permissions (writeFileAtomic)",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/types/**/*.d.ts",
+    "lib/types/**/*.d.ts.map",
+    "src"
+  ],
+  "license": "BSD-3-Clause",
+  "peerDependencies": {
+    "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "devDependencies": {
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "cordis": "^4.0.0-rc.7"
+  }
+}
diff --git a/packages/util/atomic-write/src/index.ts b/packages/util/atomic-write/src/index.ts
new file mode 100644
index 0000000000..07d0276033
--- /dev/null
+++ b/packages/util/atomic-write/src/index.ts
@@ -0,0 +1,157 @@
+/**
+ * Zero-dependency atomic file replacement and writer coordination.
+ * `writeFileAtomic` writes a random-suffix sibling with exclusive create and
+ * the caller's permission bits, then renames it over the target, so readers
+ * observe either the old or the new complete content and a replaced file ends
+ * up with exactly the stated mode. `withFileLock` serializes cross-process
+ * writers of one file through a `wx`-created `<file>.lock` sibling, so a
+ * read-modify-write cycle can never resurrect a state another writer just
+ * replaced; readers stay lock-free because the rename commit is atomic.
+ * @module @deepseek-ai/dsh-atomic-write
+ */
+
+import { randomBytes } from 'node:crypto'
+import { mkdir, rename, rm, stat, writeFile } from 'node:fs/promises'
+import { dirname } from 'node:path'
+
+/**
+ * Filesystem options for {@link writeFileAtomic}; `mode` is required so the
+ * permission decision stays visible at every call site.
+ */
+export interface WriteFileAtomicOptions {
+  /**
+   * Permission bits stamped on the fresh temp inode and carried through the
+   * rename (subject to the process umask, like every fresh inode).
+   */
+  mode: number
+  /**
+   * Permission bits for parent directories this call creates (subject to the
+   * umask; existing directories keep their mode). Omission uses the mkdir
+   * default — pass `0o700` when the tree holds user-private data.
+   */
+  dirMode?: number
+}
+
+/**
+ * Replace `filename` with `content` in one atomic step, creating parent
+ * directories. The content is first written to a random-suffix sibling opened
+ * with exclusive create (`wx`): the open refuses to follow a symlink planted
+ * at the temp path, and the fresh inode carries `options.mode` through the
+ * rename, so replacing a wider-permission file narrows it without a chmod
+ * race. The rename also replaces a symlinked target itself instead of writing
+ * through to its referent, and the same-directory sibling keeps the rename on
+ * one filesystem. On any failure the temp file is removed and the failure
+ * rethrown. Crash durability (fsync) is out of scope.
+ * @param filename - final path receiving the content.
+ * @param content - complete next file content.
+ * @param options - permission bits for the replacement inode.
+ */
+export async function writeFileAtomic(filename: string, content: string, options: WriteFileAtomicOptions): Promise<void> {
+  await mkdir(dirname(filename), {
+    recursive: true,
+    ...options.dirMode === undefined ? {} : { mode: options.dirMode },
+  })
+  // TODO(settings-atomic-durability): Use a replacement that fsyncs the file
+  // and parent directory and preserves owner-only permissions on Windows.
+  const temp = `${filename}.${randomBytes(6).toString('hex')}.tmp`
+  try {
+    await writeFile(temp, content, { mode: options.mode, flag: 'wx' })
+    await rename(temp, filename)
+  } catch (error) {
+    await rm(temp, { force: true })
+    throw error
+  }
+}
+
+/** Whether an exclusive create failed because the path already exists. */
+function isEEXIST(error: unknown): boolean {
+  return (error as NodeJS.ErrnoException | null)?.code === 'EEXIST'
+}
+
+/** Whether a filesystem error means absence. */
+function isENOENT(error: unknown): boolean {
+  return (error as NodeJS.ErrnoException | null)?.code === 'ENOENT'
+}
+
+/**
+ * Writer-lock protocol constants. These are robustness invariants of the
+ * cross-process write protocol, not deployment tunables: a holder rewrites one
+ * small file in milliseconds, so contention resolves well inside the retry
+ * deadline, and a lock older than the stale age can only belong to a crashed
+ * holder.
+ */
+const LOCK_RETRY_INITIAL_MS = 20
+const LOCK_RETRY_MAX_MS = 200
+const LOCK_TIMEOUT_MS = 2_000
+const LOCK_STALE_MS = 5_000
+
+/** Options for {@link withFileLock}. */
+export interface WithFileLockOptions {
+  /**
+   * Called once each time a stale (crashed-holder) lock is broken, so the
+   * caller can log the takeover in its own voice.
+   */
+  onStaleBreak?: (lockPath: string) => void
+}
+
+/** Age of the lock file, or `undefined` when it vanished after a failed create. */
+async function lockAgeMs(lockPath: string): Promise<number | undefined> {
+  try {
+    return Date.now() - (await stat(lockPath)).mtimeMs
+  } catch (error) {
+    if (!isENOENT(error)) throw error
+    return undefined
+  }
+}
+
+/**
+ * Hold the cross-process writer lock for `filename` around one operation. The
+ * lock is a `wx`-created sibling (`<filename>.lock`); paired with the
+ * rename-based commit of {@link writeFileAtomic}, readers stay lock-free and
+ * only writers contend. Contention backs off exponentially; a lock older than
+ * the stale age is a crashed holder and is broken (see
+ * {@link WithFileLockOptions.onStaleBreak}); a live holder past the deadline
+ * fails the operation with a timed-out error. The parent directory must exist.
+ * @param filename - the file whose writers this lock serializes.
+ * @param operation - the read-render-commit cycle to run while holding the lock.
+ * @param options - stale-takeover notification hook.
+ * @returns the operation's result; the lock releases on both outcomes.
+ */
+export async function withFileLock<T>(
+  filename: string,
+  operation: () => Promise<T>,
+  options?: WithFileLockOptions,
+): Promise<T> {
+  const lockPath = `${filename}.lock`
+  const deadline = Date.now() + LOCK_TIMEOUT_MS
+  let delay = LOCK_RETRY_INITIAL_MS
+  for (;;) {
+    try {
+      await writeFile(lockPath, `${process.pid}\n`, { mode: 0o600, flag: 'wx' })
+      break
+    } catch (error) {
+      if (!isEEXIST(error)) throw error
+    }
+    const ageMs = await lockAgeMs(lockPath)
+    // The holder released between the failed create and the stat: the lock is
+    // free right now, so retry without burning backoff or deadline.
+    if (ageMs === undefined) continue
+    if (ageMs > LOCK_STALE_MS) {
+      // TODO(settings-lock-ownership): Replace age-only takeover with ownership-safe
+      // acquisition and release so a slow writer cannot remove a successor's lock.
+      options?.onStaleBreak?.(lockPath)
+      await rm(lockPath, { force: true })
+      continue
+    }
+    if (Date.now() >= deadline) {
+      throw new Error(`atomic-write: timed out waiting for the writer lock at ${lockPath}`)
+    }
+    await new Promise(resolve => setTimeout(resolve, delay))
+    delay = Math.min(delay * 2, LOCK_RETRY_MAX_MS)
+  }
+  try {
+    return await operation()
+  } finally {
+    await rm(lockPath, { force: true })
+  }
+}
diff --git a/packages/util/atomic-write/src/invariant.ts b/packages/util/atomic-write/src/invariant.ts
new file mode 100644
index 0000000000..4027dd9bda
--- /dev/null
+++ b/packages/util/atomic-write/src/invariant.ts
@@ -0,0 +1,30 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-atomic-write`.
+ * @module @deepseek-ai/dsh-atomic-write/invariant
+ */
+
+/* jscpd:ignore-start */
+import type { Context } from 'cordis'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-atomic-write'
+
+/** Cordis companion plugin name. */
+export const name = 'atomic-write-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * No runtime invariant: this pure filesystem primitive owns no event stream or mutable runtime
+ * data; its replacement contract is enforced by unit tests.
+ */
+const install: InvariantInstaller = () => {}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */
diff --git a/packages/util/atomic-write/tests/atomic-write.spec.ts b/packages/util/atomic-write/tests/atomic-write.spec.ts
new file mode 100644
index 0000000000..2bc9d3ab6a
--- /dev/null
+++ b/packages/util/atomic-write/tests/atomic-write.spec.ts
@@ -0,0 +1,48 @@
+import { lstat, mkdir, mkdtemp, readFile, readdir, stat, symlink, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { writeFileAtomic } from '../src/index.ts'
+
+async function scratch(): Promise<string> {
+  return mkdtemp(join(tmpdir(), 'dsh-atomic-write-'))
+}
+
+describe('writeFileAtomic', () => {
+  it('creates the file and its parents with exactly the stated mode', async () => {
+    const dir = await scratch()
+    const target = join(dir, 'nested', 'deep', 'doc.yaml')
+    await writeFileAtomic(target, 'a: 1\n', { mode: 0o600 })
+    expect(await readFile(target, 'utf8')).toBe('a: 1\n')
+    expect((await stat(target)).mode & 0o777).toBe(0o600)
+  })
+
+  it('replaces existing content and narrows a wider-permission file to the stated mode', async () => {
+    const dir = await scratch()
+    const target = join(dir, 'doc.yaml')
+    await writeFile(target, 'old', { mode: 0o644 })
+    await writeFileAtomic(target, 'new', { mode: 0o600 })
+    expect(await readFile(target, 'utf8')).toBe('new')
+    expect((await stat(target)).mode & 0o777).toBe(0o600)
+  })
+
+  it('replaces a symlinked target itself without writing through to the referent', async () => {
+    const dir = await scratch()
+    const victim = join(dir, 'victim')
+    await writeFile(victim, 'victim-content')
+    const target = join(dir, 'doc.yaml')
+    await symlink(victim, target)
+    await writeFileAtomic(target, 'replaced', { mode: 0o600 })
+    expect((await lstat(target)).isSymbolicLink()).toBe(false)
+    expect(await readFile(target, 'utf8')).toBe('replaced')
+    expect(await readFile(victim, 'utf8')).toBe('victim-content')
+  })
+
+  it('leaves no temp sibling and rethrows when the rename fails', async () => {
+    const dir = await scratch()
+    const target = join(dir, 'occupied')
+    await mkdir(target)
+    await expect(writeFileAtomic(target, 'content', { mode: 0o600 })).rejects.toThrow()
+    expect((await readdir(dir)).filter(entry => entry.includes('.tmp'))).toEqual([])
+  })
+})
diff --git a/packages/util/atomic-write/tests/invariant.spec.ts b/packages/util/atomic-write/tests/invariant.spec.ts
new file mode 100644
index 0000000000..c80346762c
--- /dev/null
+++ b/packages/util/atomic-write/tests/invariant.spec.ts
@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import InvariantService from '@deepseek-ai/dsh-invariants'
+import * as AtomicWriteInvariant from '../src/invariant.ts'
+
+describe('atomic-write invariant companion', () => {
+  it('registers its explained empty runtime invariant', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService)
+    const fiber = await ctx.plugin(AtomicWriteInvariant)
+
+    expect(() => {
+      ctx.invariants.register('@deepseek-ai/dsh-atomic-write', () => {})
+    }).toThrow(/already registered/)
+    await fiber.dispose()
+    await ctx.fiber.dispose()
+  })
+})
diff --git a/packages/util/atomic-write/tsconfig.json b/packages/util/atomic-write/tsconfig.json
new file mode 100644
index 0000000000..d970a00263
--- /dev/null
+++ b/packages/util/atomic-write/tsconfig.json
@@ -0,0 +1,15 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}
diff --git a/packages/web/tool-web/README.i18n.yaml b/packages/web/tool-web/README.i18n.yaml
index d239e581fa..4a853a1fa8 100644
--- a/packages/web/tool-web/README.i18n.yaml
+++ b/packages/web/tool-web/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/web/tool-web/README.md
-README.md: 9b78920b1b6c611118294421dec1e75e381ed5d6
-README.zh.md: d36258d3a5bd8af6716e1fd9c3384389e8395e23
+README.md: 7bee0d2d30fbbcf582fd7b60eb5d9130b6bdf888
+README.zh.md: 3d708839c9ffbdd89df08678fd6997fc6c45ee07
diff --git a/packages/web/tool-web/README.md b/packages/web/tool-web/README.md
index 9b78920b1b..7bee0d2d30 100644
--- a/packages/web/tool-web/README.md
+++ b/packages/web/tool-web/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-The model-facing web tool suite — `web_search` and `web_fetch` — over the [web capability seam](../web/README.md) (`ctx.web`). It owns model-facing concerns only: tool names, JSON schemas, snake_case argument names, prompt sections, the result-count bound, result formatting, HTML→markdown presentation, and `presentCall`. All web access goes through `ctx.web`; this package never imports a concrete provider. Neither tool exposes a model-facing timeout — each tool's cooperative tool-call budget is declared here via config (`fetchTimeoutMs`/`searchTimeoutMs`, attached as `ToolDefinition.timeoutMs`) and enforced by [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md) (a `tools/execute` wrapper); each tool just forwards `exec.signal` to the seam.
+The model-facing web tool suite — `web_search` and `web_fetch` — over the [web capability seam](../web/README.md) (`ctx.web`). It owns model-facing concerns only: tool names, JSON schemas, snake_case argument names, prompt sections, the result-count bound, result formatting, HTML→markdown presentation, and the UI presentation projection — `presentCall`, `presentResult` (a `card: 'web'` result card discriminated by `kind: 'search' | 'fetch'`), and the `output.presentationMeta` that carries the structured search sources or the fetch summary the lossy render text cannot (see the [web-result-card Agent Note](../../../.agents/notes/implemented/feature/2026-07-30-web-result-card.md)). All web access goes through `ctx.web`; this package never imports a concrete provider. Neither tool exposes a model-facing timeout — each tool's cooperative tool-call budget is declared here via config (`fetchTimeoutMs`/`searchTimeoutMs`, attached as `ToolDefinition.timeoutMs`) and enforced by [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md) (a `tools/execute` wrapper); each tool just forwards `exec.signal` to the seam.
 
 Each tool is registered independently; a product that wants only one disables the other via config (`{ search: false }` / `{ fetch: false }`).
 
diff --git a/packages/web/tool-web/README.zh.md b/packages/web/tool-web/README.zh.md
index d36258d3a5..3d708839c9 100644
--- a/packages/web/tool-web/README.zh.md
+++ b/packages/web/tool-web/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-面向模型的 web 工具套件 `web_search` 与 `web_fetch`，构建于 [web 能力 seam](../web/README.md)（`ctx.web`）之上。它只负责面向模型的事项：工具名称、JSON Schema、snake_case 参数名称、提示词区段、结果数量上限、结果格式、HTML→markdown 呈现，以及 `presentCall`。所有 web 访问都通过 `ctx.web`；该包（package）绝不导入具体提供方。两个工具都不公开面向模型的超时：每个工具的协作式工具调用超时预算通过配置在此声明（`fetchTimeoutMs`／`searchTimeoutMs`，附加为 `ToolDefinition.timeoutMs`），由 [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md)（`tools/execute` 包装层）强制执行；每个工具只把 `exec.signal` 转发给 seam。
+面向模型的 web 工具套件 `web_search` 与 `web_fetch`，构建于 [web 能力 seam](../web/README.md)（`ctx.web`）之上。它只负责面向模型的事项：工具名称、JSON Schema、snake_case 参数名称、提示词区段、结果数量上限、结果格式、HTML→markdown 呈现，以及 UI 呈现投影——`presentCall`、`presentResult`（以 `kind: 'search' | 'fetch'` 区分的 `card: 'web'` 结果卡片），以及承载有损渲染文本无法携带的结构化搜索来源或抓取摘要的 `output.presentationMeta`（见 [web-result-card Agent Note](../../../.agents/notes/implemented/feature/2026-07-30-web-result-card.md)）。所有 web 访问都通过 `ctx.web`；该包（package）绝不导入具体提供方。两个工具都不公开面向模型的超时：每个工具的协作式工具调用超时预算通过配置在此声明（`fetchTimeoutMs`／`searchTimeoutMs`，附加为 `ToolDefinition.timeoutMs`），由 [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md)（`tools/execute` 包装层）强制执行；每个工具只把 `exec.signal` 转发给 seam。
 
 每个工具独立注册；只需要其中一个工具的产品可以通过配置禁用另一个（`{ search: false }`／`{ fetch: false }`）。
 
diff --git a/packages/web/tool-web/src/fetch.ts b/packages/web/tool-web/src/fetch.ts
index 75108f663c..d642615874 100644
--- a/packages/web/tool-web/src/fetch.ts
+++ b/packages/web/tool-web/src/fetch.ts
@@ -9,7 +9,7 @@ import type { Context } from 'cordis'
 import TurndownService from 'turndown'
 import { gfm } from '@joplin/turndown-plugin-gfm'
 import { defineTool } from '@deepseek-ai/dsh-tools'
-import type { GenericCallView } from '@deepseek-ai/dsh-tools'
+import type { GenericCallView, JsonValue, ToolResult, WebFetchResultView } from '@deepseek-ai/dsh-tools'
 import type { WebFetchBody, WebFetchResult } from '@deepseek-ai/dsh-web'
 import { assertNever } from '@deepseek-ai/dsh-llm'
 import type {} from '@deepseek-ai/dsh-system-prompt'
@@ -246,26 +246,87 @@ function renderBody(body: WebFetchBody, maxInputChars: number): RenderedBody {
 /** The truncation notice appended when the provider or the output cap cut content. */
 const TRUNCATION_FOOTER = '\n\n(Content truncated. Fetch a more specific URL or section for the full text.)'
 
+/** A rendered fetch output: the model-facing text and its effective truncation. */
+interface RenderedFetch {
+  /** The complete bounded output — header, rendered body, and truncation footer. */
+  text: string
+  /**
+   * True when the provider capped the body, a pre-conversion source cut applied,
+   * or the complete output exceeded `maxOutputChars`. This is the effective
+   * truncation the returned text reflects (its footer), wider than the
+   * provider-only `WebFetchResult.truncated`.
+   */
+  truncated: boolean
+}
+
 /**
- * Format a fetch result as one model-facing text block, bounded as a whole.
- * The same cap limits the source prefix processed synchronously, then applies
- * again where the complete output — header, rendered body, and footer — is known.
+ * Render a fetch result to its bounded model-facing text and effective
+ * truncation. The single source of both the `render` text and the fetch card's
+ * `truncated`, so the card never disagrees with the text the model saw. The cap
+ * limits the source prefix processed synchronously, then applies again where the
+ * complete output — header, rendered body, and footer — is known.
+ *
+ * Package-internal: the only callers are {@link formatFetchOutput} and
+ * {@link fetchMetaFromValue}, both reached through the tool registry, which
+ * deep-freezes the result value before calling `output.render` and
+ * `output.presentationMeta`. The conversion is memoized per
+ * `(result, maxOutputChars)` so the synchronous DOM parse and turndown walk run
+ * once, not twice, on that same frozen value. Keeping it unexported means no
+ * caller can mutate a cached input or the returned {@link RenderedFetch}, so the
+ * memo needs no defensive copy.
  *
  * @param result - the seam's fetch outcome.
  * @param maxOutputChars - cap on the complete returned string; a cut body gets
  *   the same fetch-something-narrower notice as provider-side truncation.
- * @returns a `Fetched <url> (HTTP <status>)` header, the rendered body, and a
- *   truncation notice when the provider or the cap cut the content.
+ * @returns the complete `Fetched <url> (HTTP <status>)`-headed text and whether
+ *   the provider, a source cut, or the cap trimmed the content.
  */
-export function formatFetchOutput(result: WebFetchResult, maxOutputChars: number): string {
+function renderFetchOutput(result: WebFetchResult, maxOutputChars: number): RenderedFetch {
+  const byCap = renderCache.get(result) ?? new Map<number, RenderedFetch>()
+  const cached = byCap.get(maxOutputChars)
+  if (cached !== undefined) return cached
+  const computed = computeFetchOutput(result, maxOutputChars)
+  byCap.set(maxOutputChars, computed)
+  renderCache.set(result, byCap)
+  return computed
+}
+
+/**
+ * Per-result memo for {@link renderFetchOutput}, keyed first on the frozen
+ * result value so a garbage-collected result drops its entry, then on the output
+ * cap (a deployment constant per registration). Collapses the registry's twin
+ * `render`/`presentationMeta` calls into one HTML→markdown conversion.
+ */
+const renderCache = new WeakMap<WebFetchResult, Map<number, RenderedFetch>>()
+
+/**
+ * The uncached conversion behind {@link renderFetchOutput}. Separated so the
+ * memo wraps exactly one call site and the conversion logic stays pure.
+ *
+ * @param result - the seam's fetch outcome.
+ * @param maxOutputChars - cap on the complete returned string.
+ * @returns the bounded text and effective truncation.
+ */
+function computeFetchOutput(result: WebFetchResult, maxOutputChars: number): RenderedFetch {
   const header = `Fetched ${result.url} (HTTP ${result.statusCode})\n\n`
   const rendered = renderBody(result.body, maxOutputChars)
   const prefix = `${header}${rendered.text}`
   const truncated = result.truncated || rendered.sourceTruncated || prefix.length > maxOutputChars
   const full = `${prefix}${truncated ? TRUNCATION_FOOTER : ''}`
-  if (full.length <= maxOutputChars) return full
-  if (maxOutputChars < TRUNCATION_FOOTER.length) return full.slice(0, maxOutputChars)
-  return `${prefix.slice(0, maxOutputChars - TRUNCATION_FOOTER.length)}${TRUNCATION_FOOTER}`
+  if (full.length <= maxOutputChars) return { text: full, truncated }
+  if (maxOutputChars < TRUNCATION_FOOTER.length) return { text: full.slice(0, maxOutputChars), truncated }
+  return { text: `${prefix.slice(0, maxOutputChars - TRUNCATION_FOOTER.length)}${TRUNCATION_FOOTER}`, truncated }
+}
+
+/**
+ * Format a fetch result as one model-facing text block, bounded as a whole.
+ *
+ * @param result - the seam's fetch outcome.
+ * @param maxOutputChars - cap on the complete returned string.
+ * @returns the complete text from {@link renderFetchOutput}.
+ */
+export function formatFetchOutput(result: WebFetchResult, maxOutputChars: number): string {
+  return renderFetchOutput(result, maxOutputChars).text
 }
 
 /**
@@ -278,6 +339,83 @@ export function presentFetchCall(args: { url: string }): GenericCallView {
   return { card: 'generic', title: args.url, kind: 'fetch', rawInput: args.url }
 }
 
+/**
+ * The `web_fetch` tool's private `tool/result` `meta` payload: the fetch summary
+ * a UI cannot recover from the model-facing render text without reparsing its
+ * header line. Attached opaquely (as `JsonValue`) on the tool result and
+ * persisted with the session log, so `presentResult` reproduces the fetch card
+ * on replay. The body itself is already markdown in the result content, so it is
+ * not duplicated here. `truncated` is the effective truncation the render text
+ * reflects, which a client cannot recompute (it does not know the deployment's
+ * `fetchMaxOutputChars`); this is why fetch meta is carried, not derived from the
+ * header line (see the web-result-card Agent Note).
+ */
+export interface WebFetchMeta {
+  /** The final URL after allowed redirects. */
+  url: string
+  /** HTTP status code of the fetched response. */
+  statusCode: number
+  /** True when the provider, a source cut, or the output cap trimmed the content. */
+  truncated: boolean
+}
+
+/**
+ * Project a validated `web_fetch` output value into its replayable presentation
+ * meta ({@link WebFetchMeta} as opaque JSON). `truncated` is the effective
+ * truncation the model-facing text reflects (via {@link renderFetchOutput}), not
+ * the provider-only `WebFetchResult.truncated`, so the fetch card never disagrees
+ * with the returned text.
+ *
+ * @param value - the canonical `web_fetch` output value (the seam's result shape).
+ * @param maxOutputChars - the deployment's output cap, the same one
+ *   {@link formatFetchOutput} applies to the render text.
+ * @returns the URL, status code, and effective truncation flag.
+ */
+export function fetchMetaFromValue(value: WebFetchResult, maxOutputChars: number): JsonValue {
+  return { url: value.url, statusCode: value.statusCode, truncated: renderFetchOutput(value, maxOutputChars).truncated }
+}
+
+/**
+ * Narrow opaque live or replayed result metadata to a {@link WebFetchMeta}.
+ * Malformed metadata returns `undefined` so presentation can fall back to the
+ * generic card instead of throwing during replay.
+ *
+ * @param meta - result metadata.
+ * @returns the validated fetch meta, or `undefined` for absent or malformed data.
+ */
+export function fetchMetaFromResult(meta: unknown): WebFetchMeta | undefined {
+  if (typeof meta !== 'object' || meta === null || Array.isArray(meta)) return undefined
+  const { url, statusCode, truncated } = meta as Record<string, unknown>
+  if (typeof url !== 'string' || typeof statusCode !== 'number' || typeof truncated !== 'boolean') return undefined
+  return { url, statusCode, truncated }
+}
+
+/**
+ * Completed-call presentation: a `web` fetch card carrying the retrieval summary
+ * from `meta`. It sets no `content` copy — a UI without the `web` capability
+ * falls back to the raw `tool/result` content, the already-markdown body (see the
+ * web-result-card Agent Note).
+ *
+ * @param args - the raw tool arguments; `url` becomes the result-state title so a
+ *   window-truncated replay that dropped the call head still has one.
+ * @param result - the final model-facing tool result; `meta` carries the summary.
+ * @returns the fetch result view, or `undefined` (generic card) on failure or
+ *   malformed meta.
+ */
+export function presentFetchResult(args: { url: string }, result: ToolResult): WebFetchResultView | undefined {
+  if (result.isError) return undefined
+  const meta = fetchMetaFromResult(result.meta)
+  if (meta === undefined) return undefined
+  return {
+    card: 'web',
+    kind: 'fetch',
+    title: args.url,
+    url: meta.url,
+    statusCode: meta.statusCode,
+    truncated: meta.truncated,
+  }
+}
+
 /**
  * Register the `web_fetch` tool and its system-prompt guidance.
  *
@@ -333,6 +471,7 @@ export function applyWebFetchTool(ctx: Context, timeoutMs: number, maxOutputChar
         },
       },
       render: (_args, value) => [{ type: 'text', text: formatFetchOutput(value, maxOutputChars) }],
+      presentationMeta: (_args, value) => fetchMetaFromValue(value, maxOutputChars),
     },
     timeoutMs,
     // Provider reads do not mutate parent-agent state.
@@ -351,5 +490,6 @@ export function applyWebFetchTool(ctx: Context, timeoutMs: number, maxOutputChar
       }
     },
     presentCall: presentFetchCall,
+    presentResult: (args, result) => presentFetchResult(args, result),
   }))
 }
diff --git a/packages/web/tool-web/src/index.ts b/packages/web/tool-web/src/index.ts
index 74585b3cab..397e2bf7bb 100644
--- a/packages/web/tool-web/src/index.ts
+++ b/packages/web/tool-web/src/index.ts
@@ -12,8 +12,10 @@ import type {} from '@deepseek-ai/dsh-web'
 import { applyWebSearchTool, WEB_SEARCH_MAX_RESULTS } from './search.ts'
 import { applyWebFetchTool } from './fetch.ts'
 
-export { WEB_SEARCH_MAX_RESULTS, applyWebSearchTool, formatSearchOutput, parseSearchArgs, presentSearchCall } from './search.ts'
-export { applyWebFetchTool, formatFetchOutput, parseFetchArgs, presentFetchCall } from './fetch.ts'
+export { WEB_SEARCH_MAX_RESULTS, applyWebSearchTool, formatSearchOutput, parseSearchArgs, presentSearchCall, presentSearchResult, searchMetaFromValue, searchMetaFromResult } from './search.ts'
+export type { WebSearchMeta } from './search.ts'
+export { applyWebFetchTool, formatFetchOutput, parseFetchArgs, presentFetchCall, presentFetchResult, fetchMetaFromValue, fetchMetaFromResult } from './fetch.ts'
+export type { WebFetchMeta } from './fetch.ts'
 
 /** Cordis plugin name used by loader diagnostics. */
 export const name = 'tool-web'
diff --git a/packages/web/tool-web/src/search.ts b/packages/web/tool-web/src/search.ts
index 816650e4b0..20979e4035 100644
--- a/packages/web/tool-web/src/search.ts
+++ b/packages/web/tool-web/src/search.ts
@@ -7,8 +7,8 @@
 
 import type { Context } from 'cordis'
 import { defineTool } from '@deepseek-ai/dsh-tools'
-import type { GenericCallView } from '@deepseek-ai/dsh-tools'
-import type { WebSearchResult } from '@deepseek-ai/dsh-web'
+import type { GenericCallView, JsonValue, ToolResult, WebSearchResultView, WebSource } from '@deepseek-ai/dsh-tools'
+import type { WebSearchResult, WebSearchSource } from '@deepseek-ai/dsh-web'
 import type {} from '@deepseek-ai/dsh-system-prompt'
 
 /**
@@ -84,6 +84,117 @@ export function presentSearchCall(args: { query: string }): GenericCallView {
   return { card: 'generic', title: args.query, kind: 'search', rawInput: args.query }
 }
 
+/**
+ * The `web_search` tool's private `tool/result` `meta` payload: the structured
+ * sources, the optional provider answer, and the truncation flag. Attached
+ * opaquely (as `JsonValue`) on the tool result and persisted with the session
+ * log, so `presentResult` reproduces the search card on replay. This projection
+ * is the only faithful route to the per-source fields, which the lossy render
+ * text cannot carry (the owning rationale is the web-result-card Agent Note).
+ */
+export interface WebSearchMeta {
+  /** The faithful structured sources, in result order. */
+  sources: WebSource[]
+  /** True when the seam cut the source list to honor the result cap. */
+  truncated: boolean
+  /** The provider-generated answer text, when any. */
+  answer?: string
+}
+
+/**
+ * Project one seam source into a plain object that omits every absent optional
+ * field. Shared by the canonical `execute` result and its replayable
+ * presentation meta so both carry byte-identical source shapes.
+ *
+ * @param source - one source from the `ctx.web` search outcome.
+ * @returns `{ url }` plus each present optional field.
+ */
+function projectSource(source: WebSearchSource): {
+  url: string
+  title?: string
+  snippet?: string
+  publishedAt?: string
+} {
+  return {
+    url: source.url,
+    ...source.title !== undefined ? { title: source.title } : {},
+    ...source.snippet !== undefined ? { snippet: source.snippet } : {},
+    ...source.publishedAt !== undefined ? { publishedAt: source.publishedAt } : {},
+  }
+}
+
+/**
+ * Project a validated `web_search` output value into its replayable
+ * presentation meta ({@link WebSearchMeta} as opaque JSON).
+ *
+ * @param value - the canonical `web_search` output value (the seam's result shape).
+ * @returns the structured sources, the truncation flag, and the answer when present.
+ */
+export function searchMetaFromValue(value: WebSearchResult): JsonValue {
+  return {
+    sources: value.sources.map(projectSource),
+    truncated: value.truncated,
+    ...value.content !== undefined ? { answer: value.content } : {},
+  }
+}
+
+/** Whether `value` is a valid {@link WebSource} (defensive narrowing from opaque `meta`). */
+function isWebSource(value: unknown): value is WebSource {
+  if (typeof value !== 'object' || value === null || Array.isArray(value)) return false
+  const { url, title, snippet, publishedAt } = value as Record<string, unknown>
+  return typeof url === 'string'
+    && (title === undefined || typeof title === 'string')
+    && (snippet === undefined || typeof snippet === 'string')
+    && (publishedAt === undefined || typeof publishedAt === 'string')
+}
+
+/**
+ * Narrow opaque live or replayed result metadata to a {@link WebSearchMeta}.
+ * Malformed metadata returns `undefined` so presentation can fall back to the
+ * generic card instead of throwing during replay.
+ *
+ * @param meta - result metadata.
+ * @returns the validated search meta, or `undefined` for absent or malformed data.
+ */
+export function searchMetaFromResult(meta: unknown): WebSearchMeta | undefined {
+  if (typeof meta !== 'object' || meta === null || Array.isArray(meta)) return undefined
+  const { sources, truncated, answer } = meta as Record<string, unknown>
+  if (!Array.isArray(sources) || !sources.every(isWebSource)) return undefined
+  if (typeof truncated !== 'boolean') return undefined
+  if (answer !== undefined && typeof answer !== 'string') return undefined
+  return {
+    sources,
+    truncated,
+    ...answer !== undefined ? { answer } : {},
+  }
+}
+
+/**
+ * Completed-call presentation: a `web` search card carrying the faithful
+ * structured sources from `meta`. It sets no `content` copy — a UI without the
+ * `web` capability falls back to the raw `tool/result` content, which is the
+ * same text (see the web-result-card Agent Note).
+ *
+ * @param args - the raw tool arguments; `query` becomes the result-state title so
+ *   a window-truncated replay that dropped the call head still has one.
+ * @param result - the final model-facing tool result; `meta` carries the sources.
+ * @returns the search result view, or `undefined` (generic card) on failure or
+ *   malformed meta.
+ */
+export function presentSearchResult(args: { query: string }, result: ToolResult): WebSearchResultView | undefined {
+  if (result.isError) return undefined
+  const meta = searchMetaFromResult(result.meta)
+  if (meta === undefined) return undefined
+  return {
+    card: 'web',
+    kind: 'search',
+    title: args.query,
+    sources: meta.sources,
+    truncated: meta.truncated,
+    ...meta.answer !== undefined ? { answer: meta.answer } : {},
+  }
+}
+
 /**
  * Register the `web_search` tool and its system-prompt guidance.
  *
@@ -131,6 +242,7 @@ export function applyWebSearchTool(ctx: Context, maxResults: number, timeoutMs:
         },
       },
       render: (_args, value) => [{ type: 'text', text: formatSearchOutput(value) }],
+      presentationMeta: (_args, value) => searchMetaFromValue(value),
     },
     timeoutMs,
     // Provider reads do not mutate parent-agent state.
@@ -143,15 +255,11 @@ export function applyWebSearchTool(ctx: Context, maxResults: number, timeoutMs:
       )
       return {
         ...result.content !== undefined ? { content: result.content } : {},
-        sources: result.sources.map(source => ({
-          url: source.url,
-          ...source.title !== undefined ? { title: source.title } : {},
-          ...source.snippet !== undefined ? { snippet: source.snippet } : {},
-          ...source.publishedAt !== undefined ? { publishedAt: source.publishedAt } : {},
-        })),
+        sources: result.sources.map(projectSource),
         truncated: result.truncated,
       }
     },
     presentCall: presentSearchCall,
+    presentResult: (args, result) => presentSearchResult(args, result),
   }))
 }
diff --git a/packages/web/tool-web/tests/integration.spec.ts b/packages/web/tool-web/tests/integration.spec.ts
index 7650231a10..e235d4d455 100644
--- a/packages/web/tool-web/tests/integration.spec.ts
+++ b/packages/web/tool-web/tests/integration.spec.ts
@@ -97,7 +97,7 @@ describe('web_search integration over the real Exa provider', () => {
       JSON.stringify({ results: [{ url: 'https://result.test', title: 'Result', highlights: ['a highlight'] }] }),
       { status: 200, headers: { 'content-type': 'application/json' } },
     )))
-    const out = await call('web_search', { query: 'deepseek' })
+    const out = await call('web_search', { query: 'deepseek-official' })
     expect(out.isError).toBe(false)
     expect(out.content.map(b => b.type === 'text' ? b.text : '').join('')).toContain('[Result](https://result.test)')
   })
diff --git a/packages/web/tool-web/tests/tool-web.spec.ts b/packages/web/tool-web/tests/tool-web.spec.ts
index 2324922046..fa07c4ba56 100644
--- a/packages/web/tool-web/tests/tool-web.spec.ts
+++ b/packages/web/tool-web/tests/tool-web.spec.ts
@@ -14,8 +14,16 @@ import {
   parseFetchArgs,
   presentSearchCall,
   presentFetchCall,
+  presentSearchResult,
+  presentFetchResult,
+  searchMetaFromValue,
+  searchMetaFromResult,
+  fetchMetaFromValue,
+  fetchMetaFromResult,
   WEB_SEARCH_MAX_RESULTS,
 } from '@deepseek-ai/dsh-tool-web'
+import type { ContentBlock } from '@deepseek-ai/dsh-llm'
+import type { ToolResult } from '@deepseek-ai/dsh-tools'
 
 const testToolSignal = new AbortController().signal
 
@@ -91,6 +99,97 @@ describe('search formatting', () => {
   })
 })
 
+/** Build a completed non-error tool result with the given meta and text content. */
+function toolResult(meta: unknown, text = 'body', isError = false): ToolResult {
+  const content: ContentBlock[] = [{ type: 'text', text }]
+  return { content, isError, ...meta !== undefined ? { meta: meta as never } : {} }
+}
+
+describe('web_search presentation meta and result view', () => {
+  it('projects sources, answer, and truncation into meta, omitting absent optional fields', () => {
+    const meta = searchMetaFromValue({
+      content: 'an answer', truncated: true,
+      sources: [
+        { url: 'https://a.test/x', title: 'A', snippet: 'about a', publishedAt: '2026-01-01' },
+        { url: 'https://b.test/y' },
+      ],
+    })
+    expect(meta).toEqual({
+      answer: 'an answer',
+      truncated: true,
+      sources: [
+        { url: 'https://a.test/x', title: 'A', snippet: 'about a', publishedAt: '2026-01-01' },
+        { url: 'https://b.test/y' },
+      ],
+    })
+  })
+
+  it('omits answer from meta when the provider returned none', () => {
+    const meta = searchMetaFromValue({ truncated: false, sources: [{ url: 'https://a.test' }] })
+    expect(meta).toEqual({ truncated: false, sources: [{ url: 'https://a.test' }] })
+  })
+
+  it('round-trips projected meta back to a typed search meta', () => {
+    const value = {
+      content: 'ans', truncated: false,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 's', publishedAt: '2026-01-01' }],
+    }
+    expect(searchMetaFromResult(searchMetaFromValue(value))).toEqual({
+      answer: 'ans', truncated: false,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 's', publishedAt: '2026-01-01' }],
+    })
+  })
+
+  it('presents a completed search as a web/search card carrying the structured sources, titled by the query', () => {
+    const meta = searchMetaFromValue({
+      content: 'an answer', truncated: true,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 'snip', publishedAt: '2026-07-20' }],
+    })
+    expect(presentSearchResult({ query: 'q' }, toolResult(meta, 'rendered'))).toEqual({
+      card: 'web',
+      kind: 'search',
+      title: 'q',
+      answer: 'an answer',
+      truncated: true,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 'snip', publishedAt: '2026-07-20' }],
+    })
+  })
+
+  it('omits the answer from the view when meta carries none', () => {
+    const meta = searchMetaFromValue({ truncated: false, sources: [{ url: 'https://a.test' }] })
+    const view = presentSearchResult({ query: 'q' }, toolResult(meta))
+    expect(view).toBeDefined()
+    expect(view && 'answer' in view).toBe(false)
+    expect(view && 'content' in view).toBe(false)
+  })
+
+  it('falls back to the generic card on an error result', () => {
+    const meta = searchMetaFromValue({ truncated: false, sources: [{ url: 'https://a.test' }] })
+    expect(presentSearchResult({ query: 'q' }, toolResult(meta, 'body', true))).toBeUndefined()
+  })
+
+  it('falls back to the generic card on absent or malformed meta', () => {
+    expect(presentSearchResult({ query: 'q' }, toolResult(undefined))).toBeUndefined()
+    expect(searchMetaFromResult(undefined)).toBeUndefined()
+    expect(searchMetaFromResult(null)).toBeUndefined()
+    expect(searchMetaFromResult('nope')).toBeUndefined()
+    expect(searchMetaFromResult([])).toBeUndefined()
+    expect(searchMetaFromResult({})).toBeUndefined()
+    expect(searchMetaFromResult({ sources: 'x', truncated: false })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [], truncated: 'no' })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [], truncated: false, answer: 1 })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [null], truncated: false })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [{ url: 1 }], truncated: false })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [{ url: 'u', title: 2 }], truncated: false })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [{ url: 'u', snippet: 2 }], truncated: false })).toBeUndefined()
+    expect(searchMetaFromResult({ sources: [{ url: 'u', publishedAt: 2 }], truncated: false })).toBeUndefined()
+  })
+
+  it('accepts an empty source list as valid meta', () => {
+    expect(searchMetaFromResult({ sources: [], truncated: false })).toEqual({ sources: [], truncated: false })
+  })
+})
+
 describe('fetch formatting', () => {
   const NO_CAP = 1_000_000
   const HEADER = 'Fetched https://a.test (HTTP 200)\n\n'
@@ -259,6 +358,87 @@ describe('fetch formatting', () => {
   })
 })
 
+describe('web_fetch presentation meta and result view', () => {
+  const NO_CAP = 1_000_000
+
+  it('projects url, status, and the provider truncation into meta', () => {
+    expect(fetchMetaFromValue({ url: 'https://a.test', statusCode: 404, truncated: true, body: { kind: 'text', content: 'x' } }, NO_CAP))
+      .toEqual({ url: 'https://a.test', statusCode: 404, truncated: true })
+  })
+
+  it('projects truncated: true when the output cap cut a body the provider did not, matching the render footer', () => {
+    // The provider reports truncated: false, but conversion outgrows the cap, so
+    // the render text carries the truncation footer. The meta must agree.
+    const value = {
+      url: 'https://a.test', statusCode: 200, truncated: false,
+      body: { kind: 'html' as const, content: `<p>${'_'.repeat(1000)}</p>` },
+    }
+    const meta = fetchMetaFromValue(value, 500) as { truncated: boolean }
+    expect(meta.truncated).toBe(true)
+    expect(formatFetchOutput(value, 500)).toContain('Content truncated')
+  })
+
+  it('projects truncated: false when neither the provider nor the cap cut the body', () => {
+    const value = {
+      url: 'https://a.test', statusCode: 200, truncated: false,
+      body: { kind: 'text' as const, content: 'short' },
+    }
+    const meta = fetchMetaFromValue(value, NO_CAP) as { truncated: boolean }
+    expect(meta.truncated).toBe(false)
+    expect(formatFetchOutput(value, NO_CAP)).not.toContain('Content truncated')
+  })
+
+  it('converts one HTML body once across the render and meta projections of the same result', () => {
+    // The registry calls output.render and output.presentationMeta with the same
+    // frozen result value; the memo must collapse them into one turndown walk so
+    // a large or deeply nested page is not parsed and converted twice. A second
+    // cap on the same result is a distinct entry, so it converts again.
+    const spy = vi.spyOn(TurndownService.prototype, 'turndown')
+    const value = {
+      url: 'https://a.test', statusCode: 200, truncated: false,
+      body: { kind: 'html' as const, content: '<p>hello</p>' },
+    }
+    try {
+      formatFetchOutput(value, NO_CAP)
+      fetchMetaFromValue(value, NO_CAP)
+      expect(spy).toHaveBeenCalledTimes(1)
+      formatFetchOutput(value, NO_CAP - 1)
+      expect(spy).toHaveBeenCalledTimes(2)
+    } finally {
+      spy.mockRestore()
+    }
+  })
+
+  it('presents a completed fetch as a web/fetch card carrying the summary, titled by the url, without content', () => {
+    const meta = fetchMetaFromValue({ url: 'https://a.test', statusCode: 200, truncated: false, body: { kind: 'text', content: '# Title' } }, NO_CAP)
+    expect(presentFetchResult({ url: 'https://a.test' }, toolResult(meta, '# Title'))).toEqual({
+      card: 'web',
+      kind: 'fetch',
+      title: 'https://a.test',
+      url: 'https://a.test',
+      statusCode: 200,
+      truncated: false,
+    })
+  })
+
+  it('falls back to the generic card on an error result', () => {
+    const meta = fetchMetaFromValue({ url: 'https://a.test', statusCode: 200, truncated: false, body: { kind: 'text', content: 'ok' } }, NO_CAP)
+    expect(presentFetchResult({ url: 'https://a.test' }, toolResult(meta, 'body', true))).toBeUndefined()
+  })
+
+  it('falls back to the generic card on absent or malformed meta', () => {
+    expect(presentFetchResult({ url: 'https://a.test' }, toolResult(undefined))).toBeUndefined()
+    expect(fetchMetaFromResult(undefined)).toBeUndefined()
+    expect(fetchMetaFromResult(null)).toBeUndefined()
+    expect(fetchMetaFromResult('nope')).toBeUndefined()
+    expect(fetchMetaFromResult([])).toBeUndefined()
+    expect(fetchMetaFromResult({})).toBeUndefined()
+    expect(fetchMetaFromResult({ url: 1, statusCode: 200, truncated: false })).toBeUndefined()
+    expect(fetchMetaFromResult({ url: 'u', statusCode: 'x', truncated: false })).toBeUndefined()
+    expect(fetchMetaFromResult({ url: 'u', statusCode: 200, truncated: 'no' })).toBeUndefined()
+  })
+})
+
 describe('tool-web registration', () => {
   it('registers both tools by default', async () => {
     const { fiber, ctx } = await mountTools()
@@ -323,6 +503,38 @@ describe('tool-web execution through the real registry', () => {
     await fiber.dispose()
   })
 
+  it('projects the search sources into the tool result meta and derives its web/search view', async () => {
+    const result: WebSearchResult = {
+      content: 'answer', truncated: true,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 'snip', publishedAt: '2026-07-20' }],
+    }
+    const { ctx, fiber, call } = await mountTools({ webConfig: { searchProvider: 'stub-search' }, search: searchProvider(result) })
+    const out = await call('web_search', { query: 'q' })
+    expect(out.meta).toEqual({
+      answer: 'answer', truncated: true,
+      sources: [{ url: 'https://a.test', title: 'A', snippet: 'snip', publishedAt: '2026-07-20' }],
+    })
+    const view = ctx.tools.get('web_search')?.presentResult?.({ query: 'q' }, { content: out.content, isError: out.isError, ...out.meta !== undefined ? { meta: out.meta } : {} })
+    expect(view).toMatchObject({ card: 'web', kind: 'search', truncated: true, answer: 'answer' })
+    await fiber.dispose()
+  })
+
+  it('projects the fetch summary into the tool result meta and derives its web/fetch view', async () => {
+    const fetchProvider = {
+      id: 'stub-fetch',
+      available: () => available,
+      fetch: (request: { url: string }) => Promise.resolve({
+        url: request.url, statusCode: 200, body: { kind: 'text' as const, content: 'ok' }, truncated: true,
+      }),
+    }
+    const { ctx, fiber, call } = await mountTools({ webConfig: { fetchProvider: 'stub-fetch' }, fetchProvider })
+    const out = await call('web_fetch', { url: 'https://a.test' })
+    expect(out.meta).toEqual({ url: 'https://a.test', statusCode: 200, truncated: true })
+    const view = ctx.tools.get('web_fetch')?.presentResult?.({ url: 'https://a.test' }, { content: out.content, isError: out.isError, ...out.meta !== undefined ? { meta: out.meta } : {} })
+    expect(view).toMatchObject({ card: 'web', kind: 'fetch', url: 'https://a.test', statusCode: 200, truncated: true })
+    await fiber.dispose()
+  })
+
   it('surfaces a structured WebError when no provider is available', async () => {
     const { fiber, call } = await mountTools()
     const out = await call('web_search', { query: 'q' })
diff --git a/packages/web/web-search-deepseek/src/provider.ts b/packages/web/web-search-deepseek/src/provider.ts
index cd259a999d..871c911deb 100644
--- a/packages/web/web-search-deepseek/src/provider.ts
+++ b/packages/web/web-search-deepseek/src/provider.ts
@@ -22,7 +22,7 @@ import type {
 } from './types.ts'
 
 /** Stable id this provider registers under. */
-export const DEEPSEEK_PROVIDER_ID = 'deepseek'
+export const DEEPSEEK_PROVIDER_ID = 'deepseek-official'
 
 /**
  * Default endpoint: DeepSeek's Anthropic-compatible surface, `/v1` included
diff --git a/packages/workflow/workflow-workerthread/tests/workflow-workerthread.e2e.ts b/packages/workflow/workflow-workerthread/tests/workflow-workerthread.e2e.ts
index 74d42f739b..08e1845d22 100644
--- a/packages/workflow/workflow-workerthread/tests/workflow-workerthread.e2e.ts
+++ b/packages/workflow/workflow-workerthread/tests/workflow-workerthread.e2e.ts
@@ -64,7 +64,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY)('worker workflow engine with-key
     ctx = await harness()
     const parentHandle = await ctx.agents.create({
       sessionId: 'wf-worker-e2e-session' as never,
-      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+      agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
     })
 
     const events: string[] = []
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index adb73145e8..4264805360 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -228,6 +228,9 @@ importers:
       '@deepseek-ai/dsh-compact-tool-result-prune':
         specifier: workspace:^
         version: link:../../packages/compact/compact-tool-result-prune
+      '@deepseek-ai/dsh-credentials-local':
+        specifier: workspace:^
+        version: link:../../packages/credentials/credentials-local
       '@deepseek-ai/dsh-frontend':
         specifier: workspace:^
         version: link:../web
@@ -315,12 +318,18 @@ importers:
       '@deepseek-ai/dsh-session-reference':
         specifier: workspace:^
         version: link:../../packages/context/session-reference
+      '@deepseek-ai/dsh-session-telemetry-otel':
+        specifier: workspace:^
+        version: link:../../packages/telemetry/session-telemetry-otel
       '@deepseek-ai/dsh-session-title':
         specifier: workspace:^
         version: link:../../packages/session-title/session-title
       '@deepseek-ai/dsh-session-title-first-message-llm':
         specifier: workspace:^
         version: link:../../packages/session-title/session-title-first-message-llm
+      '@deepseek-ai/dsh-settings-local':
+        specifier: workspace:^
+        version: link:../../packages/settings/settings-local
       '@deepseek-ai/dsh-skill':
         specifier: workspace:^
         version: link:../../packages/skill/skill
@@ -433,9 +442,15 @@ importers:
         specifier: ^4.2.0
         version: 4.2.0
     devDependencies:
+      '@deepseek-ai/dsh-llm-mock-server':
+        specifier: workspace:^
+        version: link:../../packages/support/llm-mock-server
       '@types/js-yaml':
         specifier: ^4.0.9
         version: 4.0.9
+      execa:
+        specifier: ^10.0.0
+        version: 10.0.0
       node-pty:
         specifier: 1.1.0
         version: 1.1.0(patch_hash=7a0c04f1f49d798a9ffe2f7f414c01064a44ca2489772d0c3e1235ab336755e6)
@@ -542,6 +557,9 @@ importers:
       '@deepseek-ai/dsh-compact-tool-result-prune':
         specifier: workspace:*
         version: link:../packages/compact/compact-tool-result-prune
+      '@deepseek-ai/dsh-credentials-local':
+        specifier: workspace:*
+        version: link:../packages/credentials/credentials-local
       '@deepseek-ai/dsh-fs-local':
         specifier: workspace:*
         version: link:../packages/fs/fs-local
@@ -638,6 +656,9 @@ importers:
       '@deepseek-ai/dsh-session-title-first-message-llm':
         specifier: workspace:*
         version: link:../packages/session-title/session-title-first-message-llm
+      '@deepseek-ai/dsh-settings-local':
+        specifier: workspace:*
+        version: link:../packages/settings/settings-local
       '@deepseek-ai/dsh-skill':
         specifier: workspace:*
         version: link:../packages/skill/skill
@@ -1077,6 +1098,19 @@ importers:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
 
+  packages/client/schema-form:
+    dependencies:
+      schemastery:
+        specifier: ^3.18.0
+        version: 3.18.0
+    devDependencies:
+      '@deepseek-ai/dsh-invariants':
+        specifier: workspace:^
+        version: link:../../support/invariants
+      cordis:
+        specifier: ^4.0.0-rc.7
+        version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
+
   packages/client/test-runtime:
     dependencies:
       '@testing-library/dom':
@@ -1316,18 +1350,30 @@ importers:
 
   packages/client/ui-models:
     devDependencies:
+      '@deepseek-ai/dsh-client-connection':
+        specifier: workspace:^
+        version: link:../connection
       '@deepseek-ai/dsh-client-locale':
         specifier: workspace:^
         version: link:../locale
       '@deepseek-ai/dsh-client-runtime':
         specifier: workspace:^
         version: link:../runtime
+      '@deepseek-ai/dsh-client-schema-form':
+        specifier: workspace:^
+        version: link:../schema-form
+      '@deepseek-ai/dsh-client-ui-primitives':
+        specifier: workspace:^
+        version: link:../ui-primitives
       '@deepseek-ai/dsh-client-ui-settings':
         specifier: workspace:^
         version: link:../ui-settings
       '@deepseek-ai/dsh-client-ui-slots':
         specifier: workspace:^
         version: link:../ui-slots
+      '@deepseek-ai/dsh-client-web-react':
+        specifier: workspace:^
+        version: link:../web-react
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
@@ -1777,6 +1823,9 @@ importers:
       '@deepseek-ai/dsh-client-modules':
         specifier: workspace:^
         version: link:../modules
+      '@deepseek-ai/dsh-client-schema-form':
+        specifier: workspace:^
+        version: link:../schema-form
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:^
         version: link:../ui-primitives
@@ -2116,7 +2165,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@cordisjs/plugin-timer':
         specifier: workspace:^
         version: link:../../../vendor/timer
@@ -2292,6 +2341,46 @@ importers:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
 
+  packages/credentials/credentials:
+    devDependencies:
+      '@deepseek-ai/dsh-brand':
+        specifier: workspace:^
+        version: link:../../util/brand
+      '@deepseek-ai/dsh-invariants':
+        specifier: workspace:^
+        version: link:../../support/invariants
+      cordis:
+        specifier: ^4.0.0-rc.7
+        version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
+
+  packages/credentials/credentials-local:
+    dependencies:
+      chokidar:
+        specifier: ^4.0.3
+        version: 4.0.3
+      dotenv:
+        specifier: ^17.2.0
+        version: 17.4.2
+      schemastery:
+        specifier: ^3.18.0
+        version: 3.18.0
+    devDependencies:
+      '@deepseek-ai/dsh-atomic-write':
+        specifier: workspace:^
+        version: link:../../util/atomic-write
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../credentials
+      '@deepseek-ai/dsh-invariants':
+        specifier: workspace:^
+        version: link:../../support/invariants
+      '@deepseek-ai/dsh-paths':
+        specifier: workspace:^
+        version: link:../../util/paths
+      cordis:
+        specifier: ^4.0.0-rc.7
+        version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
+
   packages/examples/acp-demo:
     devDependencies:
       '@cordisjs/plugin-include':
@@ -3025,6 +3114,9 @@ importers:
       '@deepseek-ai/dsh-commands':
         specifier: workspace:^
         version: link:../../ui/commands
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../../credentials/credentials
       '@deepseek-ai/dsh-goal':
         specifier: workspace:^
         version: link:../../goal/goal
@@ -3052,6 +3144,9 @@ importers:
       '@deepseek-ai/dsh-session-title':
         specifier: workspace:^
         version: link:../../session-title/session-title
+      '@deepseek-ai/dsh-settings':
+        specifier: workspace:^
+        version: link:../../settings/settings
       '@deepseek-ai/dsh-skill':
         specifier: workspace:^
         version: link:../../skill/skill
@@ -3235,12 +3330,18 @@ importers:
         specifier: ^3.18.0
         version: 3.18.0
     devDependencies:
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../../credentials/credentials
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
       '@deepseek-ai/dsh-llm':
         specifier: workspace:^
         version: link:../llm
+      '@deepseek-ai/dsh-settings':
+        specifier: workspace:^
+        version: link:../../settings/settings
       '@deepseek-ai/dsh-timeout':
         specifier: workspace:^
         version: link:../../util/timeout
@@ -3257,6 +3358,9 @@ importers:
         specifier: ^3.18.0
         version: 3.18.0
     devDependencies:
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../../credentials/credentials
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
@@ -3266,6 +3370,9 @@ importers:
       '@deepseek-ai/dsh-llm-deepseek':
         specifier: workspace:^
         version: link:../llm-deepseek
+      '@deepseek-ai/dsh-settings':
+        specifier: workspace:^
+        version: link:../../settings/settings
       '@deepseek-ai/dsh-timeout':
         specifier: workspace:^
         version: link:../../util/timeout
@@ -3805,8 +3912,8 @@ importers:
         specifier: ^15.0.0
         version: 15.0.0
       node-addon-require-builtin:
-        specifier: ^0.1.0
-        version: 0.1.0
+        specifier: ^0.1.3
+        version: 0.1.3
     devDependencies:
       '@deepseek-ai/dsh-app-boot':
         specifier: workspace:^
@@ -4270,6 +4377,9 @@ importers:
         specifier: ^2.9.0
         version: 2.9.0
     devDependencies:
+      '@deepseek-ai/dsh-atomic-write':
+        specifier: workspace:^
+        version: link:../../util/atomic-write
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
@@ -4533,7 +4643,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@deepseek-ai/dsh-agent':
         specifier: workspace:^
         version: link:../../core/agent
@@ -4570,7 +4680,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@deepseek-ai/dsh-agent':
         specifier: workspace:^
         version: link:../../core/agent
@@ -4610,7 +4720,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@deepseek-ai/dsh-agent':
         specifier: workspace:^
         version: link:../../core/agent
@@ -4695,7 +4805,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@deepseek-ai/dsh-agent':
         specifier: workspace:^
         version: link:../../core/agent
@@ -4747,7 +4857,7 @@ importers:
     devDependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@deepseek-ai/dsh-agent':
         specifier: workspace:^
         version: link:../../core/agent
@@ -5438,6 +5548,15 @@ importers:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
 
+  packages/util/atomic-write:
+    devDependencies:
+      '@deepseek-ai/dsh-invariants':
+        specifier: workspace:^
+        version: link:../../support/invariants
+      cordis:
+        specifier: ^4.0.0-rc.7
+        version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
+
   packages/util/brand:
     devDependencies:
       '@deepseek-ai/dsh-invariants':
@@ -5864,6 +5983,9 @@ importers:
       '@deepseek-ai/dsh-compact-tool-result-prune':
         specifier: workspace:^
         version: link:../../packages/compact/compact-tool-result-prune
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../../packages/credentials/credentials
       '@deepseek-ai/dsh-fs':
         specifier: workspace:^
         version: link:../../packages/fs/fs
@@ -5975,6 +6097,9 @@ importers:
       '@deepseek-ai/dsh-session-title':
         specifier: workspace:^
         version: link:../../packages/session-title/session-title
+      '@deepseek-ai/dsh-settings':
+        specifier: workspace:^
+        version: link:../../packages/settings/settings
       '@deepseek-ai/dsh-skill':
         specifier: workspace:^
         version: link:../../packages/skill/skill
@@ -6095,6 +6220,9 @@ importers:
       cordis:
         specifier: workspace:^
         version: link:../../vendor/cordis
+      schemastery:
+        specifier: workspace:^
+        version: link:../../vendor/schemastery
 
   vendor/cordis:
     dependencies:
@@ -6103,7 +6231,7 @@ importers:
         version: 1.0.4(@cordisjs/plugin-loader@1.0.0-rc.5)(cordis@4.0.0-rc.7)
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       '@standard-schema/spec':
         specifier: ^1.1.0
         version: 1.1.0
@@ -6117,7 +6245,7 @@ importers:
     dependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       cordis:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
@@ -6160,7 +6288,7 @@ importers:
     dependencies:
       '@cordisjs/plugin-loader':
         specifier: ^1.0.0-rc.5
-        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+        version: 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       cordis:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
@@ -6180,8 +6308,8 @@ importers:
         specifier: ^1.8.1
         version: 1.8.1
       node-addon-require-builtin:
-        specifier: ^0.1.0
-        version: 0.1.0
+        specifier: ^0.1.3
+        version: 0.1.3
 
   vendor/logger-console:
     dependencies:
@@ -9237,6 +9365,10 @@ packages:
   dompurify@3.4.11:
     resolution: {integrity: sha512-zhlUV12GsaRzMsf9q5M254YhA4+VuF0fG+QFqu6aYpoGlKtz+w8//jBcGVYBgQkR5GHjUomejY84AV+/uPbWdw==}
 
+  dotenv@17.4.2:
+    resolution: {integrity: sha512-nI4U3TottKAcAD9LLud4Cb7b2QztQMUEfHbvhTH09bqXTxnSie8WnjPALV/WMCrJZ6UV/qHJ6L03OqO3LcdYZw==}
+    engines: {node: '>=12'}
+
   dts-resolver@3.0.0:
     resolution: {integrity: sha512-1T1f+z+4tl9XD+m+0HBgWoL/nm0bOIffyWaUuUSBlFg/86IWvfx+wjNaO/ybU0AJzG9/Mi5hBUgGV6zCmWEN7Q==}
     engines: {node: ^22.18.0 || >=24.0.0}
@@ -10339,56 +10471,56 @@ packages:
     resolution: {integrity: sha512-c5qopltRonjW6+VinXYMp4FVi9Sxf8eQEb/9G82EksQQ+JC4CDprv+ko5URWmtyZ3wD4GFdeRTyw1AG5yCwJhQ==}
     engines: {node: '>=20'}
 
-  node-addon-native-custom-loader@0.1.0:
-    resolution: {integrity: sha512-LtkRZWBshiGdWB9K7yuQuEeQaoYfWSFMwV52wi4kKsQSRCSjB4Sf4lEgQTiOlVmOznM0Bg9EABLKBowkCDucQQ==}
+  node-addon-native-custom-loader@0.1.3:
+    resolution: {integrity: sha512-uMG8D3aOtEMgh7dkNWAJP0fSpmpMwUf6Cj5JePQQqtxt72sW7RDzRetaLjKIKl3+DZtBX2FobAgRS6U3LO2qXQ==}
     engines: {node: '>=20'}
 
-  node-addon-require-builtin-darwin-arm64@0.1.0:
-    resolution: {integrity: sha512-KXmOO2gs5um5HXt8k9sZMnNwrgTdnRKOf5NMXLyrY6pc3QCJrdCY6J6STgurjoM4GXOJlfo2emEfOxrIS0sCbg==}
+  node-addon-require-builtin-darwin-arm64@0.1.3:
+    resolution: {integrity: sha512-uBZIRpq3gVG/lg4SV1w8xNfgoaAWZiv7B8Gn38/wd0uUE0LSTRikY69al3Yb4gMDmJPWBoXPN3gzTxAjhllzGg==}
     engines: {node: '>=20'}
     cpu: [arm64]
     os: [darwin]
 
-  node-addon-require-builtin-darwin-x64@0.1.0:
-    resolution: {integrity: sha512-m1JkvBslC4ooNUvlvQoOx96d0qk2M1e+bO2gVkl+TT0SD07VGAPXNkxZvyT+O3A63i/1j0rjJ88B78sSdyDiVA==}
+  node-addon-require-builtin-darwin-x64@0.1.3:
+    resolution: {integrity: sha512-BLaBoaBjI7mpsgTpXvn444vCQSmrb1AC2t0tAHFuxwBtN56UT9Zaxl+gS2KZGrq5fShTPxFAUIiTcwroFXWWhg==}
     engines: {node: '>=20'}
     cpu: [x64]
     os: [darwin]
 
-  node-addon-require-builtin-linux-arm64-gnu@0.1.0:
-    resolution: {integrity: sha512-76fYWMzYBeT6eunBUrxAUleyMZwQfp8FgB3XLDCrQAsDtH0UVdg+zgmbVIQeJyJQdxTnfsQ9sfvdymG96ZeZew==}
+  node-addon-require-builtin-linux-arm64-gnu@0.1.3:
+    resolution: {integrity: sha512-L+qNUfBarYxE0HSZjf2KGymS6ZKMieLs5esRXbAbO+q1k4L1t9oBNGpQuFe7/a1a98YrfHnkAg9Q6US5j/xnIw==}
     engines: {node: '>=20'}
     cpu: [arm64]
     os: [linux]
     libc: [glibc]
 
-  node-addon-require-builtin-linux-x64-gnu@0.1.0:
-    resolution: {integrity: sha512-dDOumCPgJheVfcHOVq2nCQUp3mRU0Qsu6MfnZzVZMA73tSeQwA+yoUuQW3oPz/wuE51LwXEkm6Se9aerawi0Ng==}
+  node-addon-require-builtin-linux-x64-gnu@0.1.3:
+    resolution: {integrity: sha512-Cy2ua4yy44GE5HAtf/o4LjzTa5aUJt5m0YLMjZCa8lRte5hU+C7aWm6bVkmKY82b1JnnQnHwUMEoFugLqVybSQ==}
     engines: {node: '>=20'}
     cpu: [x64]
     os: [linux]
     libc: [glibc]
 
-  node-addon-require-builtin-win32-arm64-msvc@0.1.0:
-    resolution: {integrity: sha512-OJ7m8r074Wbtc8mLsh+ugIP4KCwsTyDzfB7FE+7eeSSYRgQlbSOC11jMOYIWqMalLhAWCLkRBw7fYJDty3sSAw==}
+  node-addon-require-builtin-win32-arm64-msvc@0.1.3:
+    resolution: {integrity: sha512-8j/VcAmgT6HPQzwUo1kBNzLE2d5iVmwfraEre5KAoznuBeOiuU12oqDYpkuHGIzSjSDJiVOj/SqOe5mUMRaZOg==}
     engines: {node: '>=20'}
     cpu: [arm64]
     os: [win32]
 
-  node-addon-require-builtin-win32-ia32-msvc@0.1.0:
-    resolution: {integrity: sha512-qUhC7MEP0NhuNMwlnPudYIBtPKlUo9McRi3PWsv4539hFar1RfxGmU4DZYtDQk07Bms/NAlIE8X7mxKVu8E+OQ==}
+  node-addon-require-builtin-win32-ia32-msvc@0.1.3:
+    resolution: {integrity: sha512-Iqh+Wxmbu6SaP2lEJpEpIMkusVZeVljn914CIcz7HZtzvxTgxHZAmfsZuRMDtRhDg2Yf4AFBHLWpcJn7SeBQ/A==}
     engines: {node: '>=20 <23'}
     cpu: [ia32]
     os: [win32]
 
-  node-addon-require-builtin-win32-x64-msvc@0.1.0:
-    resolution: {integrity: sha512-JHiuwzW6jz6K8UxzoFmthDCUyZcbXlPIim0LuH7rlgz7ebVW7791lJThZp4WYGHWMiHzhljEfVG9YW4DuEwEmA==}
+  node-addon-require-builtin-win32-x64-msvc@0.1.3:
+    resolution: {integrity: sha512-5iI7C/BwwRemDNKXO2b1J/iK1gTRp1278Cwfoy92zgn7KXhv7xsAP8klk/fDu8RWX/o9zk736tRSFTBBGSHf/Q==}
     engines: {node: '>=20'}
     cpu: [x64]
     os: [win32]
 
-  node-addon-require-builtin@0.1.0:
-    resolution: {integrity: sha512-HGlhjpNtFP7qtbBIBQ2+eXDe1qXcX4RQa426IMQ+SKoLCQS9AcHYl0kwJCERvG821wfRlJOzGBoREtBOwvUGeg==}
+  node-addon-require-builtin@0.1.3:
+    resolution: {integrity: sha512-u9ZRdwDCx+ksIcYwoLeoe5Rj3151GrzSF8ln9jp7P/Zhf0OrPs1X6a8wYw6brc532ypAwjwKlhruT/V3m8MCbg==}
     engines: {node: '>=20'}
 
   node-domexception@1.0.0:
@@ -12021,7 +12153,7 @@ snapshots:
 
   '@cordisjs/plugin-include@1.0.4(@cordisjs/plugin-loader@1.0.0-rc.5)(cordis@4.0.0-rc.7)':
     dependencies:
-      '@cordisjs/plugin-loader': 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+      '@cordisjs/plugin-loader': 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
       cordis: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
       cosmokit: 1.8.1
       js-yaml: 4.2.0
@@ -12034,12 +12166,12 @@ snapshots:
       js-yaml: 4.2.0
     optional: true
 
-  '@cordisjs/plugin-loader@1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)':
+  '@cordisjs/plugin-loader@1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)':
     dependencies:
       cordis: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
       cosmokit: 1.8.1
     optionalDependencies:
-      node-addon-require-builtin: 0.1.0
+      node-addon-require-builtin: 0.1.3
 
   '@cordisjs/plugin-timer@1.1.2(cordis@4.0.0-rc.7)':
     dependencies:
@@ -13987,7 +14119,7 @@ snapshots:
       cosmokit: 1.8.1
     optionalDependencies:
       '@cordisjs/plugin-include': 1.0.4(@cordisjs/plugin-loader@1.0.0-rc.5)(cordis@4.0.0-rc.7)
-      '@cordisjs/plugin-loader': 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.0)
+      '@cordisjs/plugin-loader': 1.0.0-rc.5(cordis@4.0.0-rc.7)(node-addon-require-builtin@0.1.3)
 
   cordis@4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@vendor+loader):
     dependencies:
@@ -14268,6 +14400,8 @@ snapshots:
     optionalDependencies:
       '@types/trusted-types': 2.0.7
 
+  dotenv@17.4.2: {}
+
   dts-resolver@3.0.0(oxc-resolver@11.20.0):
     optionalDependencies:
       oxc-resolver: 11.20.0
@@ -15678,54 +15812,54 @@ snapshots:
       node-addon-landlock-run-linux-arm64: 0.0.0-test.0
       node-addon-landlock-run-linux-x64: 0.0.0-test.0
 
-  node-addon-native-custom-loader@0.1.0: {}
+  node-addon-native-custom-loader@0.1.3: {}
 
-  node-addon-require-builtin-darwin-arm64@0.1.0:
+  node-addon-require-builtin-darwin-arm64@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-darwin-x64@0.1.0:
+  node-addon-require-builtin-darwin-x64@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-linux-arm64-gnu@0.1.0:
+  node-addon-require-builtin-linux-arm64-gnu@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-linux-x64-gnu@0.1.0:
+  node-addon-require-builtin-linux-x64-gnu@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-win32-arm64-msvc@0.1.0:
+  node-addon-require-builtin-win32-arm64-msvc@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-win32-ia32-msvc@0.1.0:
+  node-addon-require-builtin-win32-ia32-msvc@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin-win32-x64-msvc@0.1.0:
+  node-addon-require-builtin-win32-x64-msvc@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optional: true
 
-  node-addon-require-builtin@0.1.0:
+  node-addon-require-builtin@0.1.3:
     dependencies:
-      node-addon-native-custom-loader: 0.1.0
+      node-addon-native-custom-loader: 0.1.3
     optionalDependencies:
-      node-addon-require-builtin-darwin-arm64: 0.1.0
-      node-addon-require-builtin-darwin-x64: 0.1.0
-      node-addon-require-builtin-linux-arm64-gnu: 0.1.0
-      node-addon-require-builtin-linux-x64-gnu: 0.1.0
-      node-addon-require-builtin-win32-arm64-msvc: 0.1.0
-      node-addon-require-builtin-win32-ia32-msvc: 0.1.0
-      node-addon-require-builtin-win32-x64-msvc: 0.1.0
+      node-addon-require-builtin-darwin-arm64: 0.1.3
+      node-addon-require-builtin-darwin-x64: 0.1.3
+      node-addon-require-builtin-linux-arm64-gnu: 0.1.3
+      node-addon-require-builtin-linux-x64-gnu: 0.1.3
+      node-addon-require-builtin-win32-arm64-msvc: 0.1.3
+      node-addon-require-builtin-win32-ia32-msvc: 0.1.3
+      node-addon-require-builtin-win32-x64-msvc: 0.1.3
 
   node-domexception@1.0.0: {}
 
diff --git a/python/sdk-runtime/package.json b/python/sdk-runtime/package.json
index cbec3a4923..5af9f4fc8c 100644
--- a/python/sdk-runtime/package.json
+++ b/python/sdk-runtime/package.json
@@ -10,8 +10,8 @@
     "@cordisjs/plugin-timer": "workspace:^",
     "@deepseek-ai/dsh-acp": "workspace:^",
     "@deepseek-ai/dsh-agent": "workspace:^",
-    "@deepseek-ai/dsh-agent-spine-demo": "workspace:^",
     "@deepseek-ai/dsh-agent-loop": "workspace:^",
+    "@deepseek-ai/dsh-agent-spine-demo": "workspace:^",
     "@deepseek-ai/dsh-app-boot": "workspace:^",
     "@deepseek-ai/dsh-bash": "workspace:^",
     "@deepseek-ai/dsh-bash-local": "workspace:^",
@@ -22,6 +22,8 @@
     "@deepseek-ai/dsh-commands": "workspace:^",
     "@deepseek-ai/dsh-compact": "workspace:^",
     "@deepseek-ai/dsh-compact-basic": "workspace:^",
+    "@deepseek-ai/dsh-compact-tool-result-prune": "workspace:^",
+    "@deepseek-ai/dsh-credentials": "workspace:^",
     "@deepseek-ai/dsh-fs": "workspace:^",
     "@deepseek-ai/dsh-fs-local": "workspace:^",
     "@deepseek-ai/dsh-fs-policy": "workspace:^",
@@ -32,37 +34,34 @@
     "@deepseek-ai/dsh-hooks-codex": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-jsonrpc": "workspace:^",
-    "@deepseek-ai/dsh-sdk-protocol": "workspace:^",
     "@deepseek-ai/dsh-jsonrpc-demo": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
-    "@deepseek-ai/dsh-session-projection": "workspace:^",
-    "@deepseek-ai/dsh-token-meter": "workspace:^",
-    "@deepseek-ai/dsh-compact-tool-result-prune": "workspace:^",
     "@deepseek-ai/dsh-llm-deepseek": "workspace:^",
     "@deepseek-ai/dsh-llm-pi-ai": "workspace:^",
     "@deepseek-ai/dsh-llm-retry": "workspace:^",
+    "@deepseek-ai/dsh-paths": "workspace:^",
+    "@deepseek-ai/dsh-permission": "workspace:^",
     "@deepseek-ai/dsh-plan-mode": "workspace:^",
     "@deepseek-ai/dsh-pty": "workspace:^",
     "@deepseek-ai/dsh-pty-local": "workspace:^",
-    "@deepseek-ai/dsh-subprocess": "workspace:^",
-    "@deepseek-ai/dsh-subprocess-local": "workspace:^",
-    "@deepseek-ai/dsh-permission": "workspace:^",
-    "@deepseek-ai/dsh-paths": "workspace:^",
     "@deepseek-ai/dsh-repeat-tool-guard": "workspace:^",
     "@deepseek-ai/dsh-retention": "workspace:^",
     "@deepseek-ai/dsh-sandbox": "workspace:^",
     "@deepseek-ai/dsh-sandbox-local": "workspace:^",
     "@deepseek-ai/dsh-sandbox-policy": "workspace:^",
     "@deepseek-ai/dsh-scope": "workspace:^",
+    "@deepseek-ai/dsh-sdk-protocol": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-checkpoint-policy": "workspace:^",
     "@deepseek-ai/dsh-session-persistence": "workspace:^",
     "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
     "@deepseek-ai/dsh-session-persistence-sqlite": "workspace:^",
+    "@deepseek-ai/dsh-session-projection": "workspace:^",
     "@deepseek-ai/dsh-session-query": "workspace:^",
     "@deepseek-ai/dsh-session-query-sqlite": "workspace:^",
     "@deepseek-ai/dsh-session-reference": "workspace:^",
     "@deepseek-ai/dsh-session-title": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^",
     "@deepseek-ai/dsh-skill": "workspace:^",
     "@deepseek-ai/dsh-skill-local": "workspace:^",
     "@deepseek-ai/dsh-subagent": "workspace:^",
@@ -70,19 +69,22 @@
     "@deepseek-ai/dsh-subagent-fork": "workspace:^",
     "@deepseek-ai/dsh-subagent-inprocess": "workspace:^",
     "@deepseek-ai/dsh-subagent-spawn": "workspace:^",
+    "@deepseek-ai/dsh-subprocess": "workspace:^",
+    "@deepseek-ai/dsh-subprocess-local": "workspace:^",
     "@deepseek-ai/dsh-system-prompt": "workspace:^",
     "@deepseek-ai/dsh-tasks": "workspace:^",
     "@deepseek-ai/dsh-tasks-local": "workspace:^",
     "@deepseek-ai/dsh-timeout": "workspace:^",
     "@deepseek-ai/dsh-timeout-policy": "workspace:^",
+    "@deepseek-ai/dsh-token-meter": "workspace:^",
     "@deepseek-ai/dsh-tool-ask-user": "workspace:^",
     "@deepseek-ai/dsh-tool-bash": "workspace:^",
-    "@deepseek-ai/dsh-tool-cordis": "workspace:^",
     "@deepseek-ai/dsh-tool-bash-persistent": "workspace:^",
+    "@deepseek-ai/dsh-tool-cordis": "workspace:^",
     "@deepseek-ai/dsh-tool-fs": "workspace:^",
-    "@deepseek-ai/dsh-tool-str-replace-editor": "workspace:^",
     "@deepseek-ai/dsh-tool-goal": "workspace:^",
     "@deepseek-ai/dsh-tool-skill": "workspace:^",
+    "@deepseek-ai/dsh-tool-str-replace-editor": "workspace:^",
     "@deepseek-ai/dsh-tool-subagent": "workspace:^",
     "@deepseek-ai/dsh-tool-tasks": "workspace:^",
     "@deepseek-ai/dsh-tool-todo": "workspace:^",
@@ -96,9 +98,10 @@
     "@deepseek-ai/dsh-web-search-deepseek": "workspace:^",
     "@deepseek-ai/dsh-web-search-exa": "workspace:^",
     "@deepseek-ai/dsh-web-search-perplexity": "workspace:^",
-    "@deepseek-ai/dsh-workspace-context": "workspace:^",
     "@deepseek-ai/dsh-workflow": "workspace:^",
     "@deepseek-ai/dsh-workflow-workerthread": "workspace:^",
-    "cordis": "workspace:^"
+    "@deepseek-ai/dsh-workspace-context": "workspace:^",
+    "cordis": "workspace:^",
+    "schemastery": "workspace:^"
   }
 }
diff --git a/python/sdk/README.i18n.yaml b/python/sdk/README.i18n.yaml
index 0115e41ce9..a96ccd30b8 100644
--- a/python/sdk/README.i18n.yaml
+++ b/python/sdk/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write python/sdk/README.md
-README.md: f1e16e724efd6f71f63e475e47d7e4d704b8ceac
-README.zh.md: 11ff235a0eea23acab5f1737537c799021c35bea
+README.md: bb3420f1a1bd461facbd0eb1312a255df1da4412
+README.zh.md: adc8e377ca9f70838b6164301a9052e2247c8eff
diff --git a/python/sdk/README.md b/python/sdk/README.md
index f1e16e724e..bb3420f1a1 100644
--- a/python/sdk/README.md
+++ b/python/sdk/README.md
@@ -25,7 +25,7 @@ By default, the SDK launches the bundled single-file `dsh-jsonrpc-agent` executa
 from deepseek_harness import DeepSeekHarness
 
 with DeepSeekHarness(
-    provider="deepseek",
+    provider="deepseek-official",
     model="deepseek-v4-flash",
     max_tokens=49_152,
     cordis="examples/jsonrpc-agent/cordis.yml",
@@ -33,7 +33,7 @@ with DeepSeekHarness(
     result = harness.run("Make the requested code change.")
 ```
 
-`provider` selects a provider route registered by the chosen Cordis composition; `model` is the model id resolved by that adapter. `max_tokens` is an optional positive per-request output-token cap for the root agent and its in-process descendants; omission leaves the provider default in control. Compaction summaries keep the separate limit configured by their compaction plugin. The bundled default composition registers `deepseek`. A custom composition can mount `llm-pi-ai`, configure provider-specific credentials/endpoints there, and select any provider/model present in pi-ai's installed catalog.
+`provider` selects a provider route registered by the chosen Cordis composition; `model` is the model id resolved by that adapter. `max_tokens` is an optional positive per-request output-token cap for the root agent and its in-process descendants; omission leaves the provider default in control. Compaction summaries keep the separate limit configured by their compaction plugin. The bundled default composition registers `deepseek-official`. A custom composition can mount `llm-pi-ai`, configure provider-specific credentials/endpoints there, and select any provider/model present in pi-ai's installed catalog.
 
 `HarnessClient` retains discovered subagent ancestry for the lifetime of the runtime process. During each `Session.run()`, `TurnResult.notifications` and `on_notification` receive the root session and all known descendant notifications in wire order, including nested subagent lifecycle and session events. `TurnResult.events` remains the root session's complete event stream, and `TurnResult.final_response` is the text content from its last `assistant/message`; descendant messages therefore cannot replace the root response.
 
diff --git a/python/sdk/README.zh.md b/python/sdk/README.zh.md
index 11ff235a0e..adc8e377ca 100644
--- a/python/sdk/README.zh.md
+++ b/python/sdk/README.zh.md
@@ -21,7 +21,7 @@ with DeepSeekHarness() as harness:
 from deepseek_harness import DeepSeekHarness
 
 with DeepSeekHarness(
-    provider="deepseek",
+    provider="deepseek-official",
     model="deepseek-v4-flash",
     max_tokens=49_152,
     cordis="examples/jsonrpc-agent/cordis.yml",
@@ -29,7 +29,7 @@ with DeepSeekHarness(
     result = harness.run("Make the requested code change.")
 ```
 
-`provider` 用于选择当前 Cordis 组合已注册的提供方路由；`model` 是该适配器解析的模型 ID。`max_tokens` 是可选的正整数，用于限制根 agent 及其进程内后代每次请求的输出 token；省略时由提供方默认值控制。压缩摘要继续使用压缩插件单独配置的上限。内置默认组合注册 `deepseek`。自定义组合可以挂载 `llm-pi-ai`，在其中配置各提供方的凭据与端点，再选择 pi-ai 已安装目录中的任意提供方/模型组合。
+`provider` 用于选择当前 Cordis 组合已注册的提供方路由；`model` 是该适配器解析的模型 ID。`max_tokens` 是可选的正整数，用于限制根 agent 及其进程内后代每次请求的输出 token；省略时由提供方默认值控制。压缩摘要继续使用压缩插件单独配置的上限。内置默认组合注册 `deepseek-official`。自定义组合可以挂载 `llm-pi-ai`，在其中配置各提供方的凭据与端点，再选择 pi-ai 已安装目录中的任意提供方/模型组合。
 
 `HarnessClient` 会在运行时进程的生命周期内保留已发现的 subagent（子 agent）祖先关系。每次执行 `Session.run()` 时，`TurnResult.notifications` 与 `on_notification` 会按协议传输顺序收到根会话及所有已知后代的通知，其中包括嵌套 subagent 的生命周期事件与会话事件。`TurnResult.events` 仍只保存根会话的完整事件流，`TurnResult.final_response` 则取该会话最后一个 `assistant/message` 的文本内容，因此后代消息不会覆盖根会话回复。
 
diff --git a/python/sdk/src/deepseek_harness/api.py b/python/sdk/src/deepseek_harness/api.py
index 29bb4223ac..1d5abdede4 100644
--- a/python/sdk/src/deepseek_harness/api.py
+++ b/python/sdk/src/deepseek_harness/api.py
@@ -18,7 +18,7 @@ class DeepSeekHarnessConfig:
     intentionally override or inject variables for a subprocess.
     """
 
-    provider: str = "deepseek"
+    provider: str = "deepseek-official"
     model: str = "deepseek-v4-flash"
     max_tokens: int | None = None
     cwd: str | None = None
diff --git a/python/sdk/tests/test_bundled_runtime.py b/python/sdk/tests/test_bundled_runtime.py
index 07f9b170ce..1ac4487582 100644
--- a/python/sdk/tests/test_bundled_runtime.py
+++ b/python/sdk/tests/test_bundled_runtime.py
@@ -72,7 +72,7 @@ def test_bundled_runtime_boots_a_cordis_config(tmp_path: Path, mode: str) -> Non
     (tmp_path / "cordis.yml").write_text(_CORDIS_YML)
 
     with _client(tmp_path, launch_args) as client:
-        init = client.initialize(provider="deepseek", cwd=str(tmp_path), model="deepseek-v4-pro")
+        init = client.initialize(provider="deepseek-official", cwd=str(tmp_path), model="deepseek-v4-pro")
 
     assert init.serverInfo is not None
     assert init.serverInfo.name == "deepseek-harness-sdk-runtime"
@@ -89,7 +89,7 @@ def test_bundled_runtime_surfaces_unbundled_plugin_failure(tmp_path: Path, mode:
     client.start()
     try:
         with pytest.raises((TransportClosedError, TimeoutError)) as excinfo:
-            client.initialize(provider="deepseek", cwd=str(tmp_path), model="deepseek-v4-pro")
+            client.initialize(provider="deepseek-official", cwd=str(tmp_path), model="deepseek-v4-pro")
     finally:
         client.close()
 
diff --git a/python/sdk/tests/test_client.py b/python/sdk/tests/test_client.py
index 52ceac9f4d..576486c704 100644
--- a/python/sdk/tests/test_client.py
+++ b/python/sdk/tests/test_client.py
@@ -94,7 +94,7 @@ for line in sys.stdin:
     assert dumped_env["DSH_CORDIS_CONFIG"] == str(tmp_path / "cordis.yml")
     assert json.loads(init_dump.read_text()) == {
         "cwd": str(tmp_path),
-        "provider": "deepseek",
+        "provider": "deepseek-official",
         "model": "deepseek-v4-flash",
         "maxTokens": 4096,
     }
@@ -404,7 +404,7 @@ for line in sys.stdin:
     with HarnessClient(
         HarnessConfig(launch_args_override=(sys.executable, str(script)))
     ) as client:
-        init = client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        init = client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         assert init.serverInfo.name == "fake-dsh"
 
         client.session_prompt("main", [{"type": "text", "text": "fix it"}])
@@ -542,7 +542,7 @@ for line in sys.stdin:
         raise RuntimeError("bad notification filter")
 
     with HarnessClient(HarnessConfig(launch_args_override=(sys.executable, str(script)))) as client:
-        client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         with (
             client.subscribe_notifications(broken_filter) as broken,
             client.subscribe_notifications(lambda notification: notification.method == "tick") as healthy,
@@ -579,7 +579,7 @@ for line in sys.stdin:
     )
 
     with HarnessClient(HarnessConfig(launch_args_override=(sys.executable, str(script)))) as client:
-        client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         with pytest.raises(ValueError):
             client.session_prompt("main", [{"type": "text", "text": "fix it"}])
 
@@ -608,7 +608,7 @@ for line in sys.stdin:
     with HarnessClient(
         HarnessConfig(launch_args_override=(sys.executable, str(script)))
     ) as client:
-        client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
 
         request = client.next_request()
         assert request.id == "bridge-req-1"
@@ -642,7 +642,7 @@ for line in sys.stdin:
     with HarnessClient(
         HarnessConfig(launch_args_override=(sys.executable, str(script)))
     ) as client:
-        init = client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        init = client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         assert init.serverInfo.name == "fake-dsh"
 
 
@@ -664,7 +664,7 @@ time.sleep(60)
     ) as client:
         start = time.monotonic()
         try:
-            client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+            client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         except TimeoutError:
             assert time.monotonic() - start < 2
         else:
@@ -700,7 +700,7 @@ for line in sys.stdin:
     client.start()
     proc = client._proc
     assert proc is not None
-    client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+    client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
     start = time.monotonic()
     client.close()
     assert time.monotonic() - start < 2
@@ -731,7 +731,7 @@ for line in sys.stdin:
     assert proc is not None
 
     with pytest.raises(Exception, match="bad initialize"):
-        client.initialize(provider="deepseek", cwd=".", model="dsagent")
+        client.initialize(provider="deepseek-official", cwd=".", model="dsagent")
 
     assert proc.wait(timeout=1) is not None
     assert client._proc is None
@@ -773,7 +773,7 @@ for line in sys.stdin:
 
     client = HarnessClient(HarnessConfig(launch_args_override=(sys.executable, str(script))))
     client.start()
-    client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+    client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
     client.close()
     client.close()
 
@@ -796,7 +796,7 @@ sys.exit(42)
         )
     ) as client:
         with pytest.raises(Exception, match="fatal bridge exploded"):
-            client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+            client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
 
 
 def test_client_serializes_concurrent_writes(tmp_path: Path) -> None:
@@ -827,7 +827,7 @@ with open(os.environ["SEEN"], "w") as seen:
             env={"SEEN": str(output)},
         )
     ) as client:
-        client.initialize(provider="deepseek", cwd="/workspace", model="dsagent")
+        client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
         threads = [
             threading.Thread(target=client.notify, args=(f"notice-{index}", {"index": index}))
             for index in range(50)
@@ -898,7 +898,7 @@ def test_client_default_launch_uses_bundled_runtime_and_injects_default_config(
         monkeypatch.setenv("DSH_CORDIS_CONFIG", ambient_config)
 
     with HarnessClient(HarnessConfig(env={"ENV_DUMP": str(env_dump)})) as client:
-        init = client.initialize(provider="deepseek", cwd="/workspace", model="deepseek-v4-pro")
+        init = client.initialize(provider="deepseek-official", cwd="/workspace", model="deepseek-v4-pro")
 
     assert init.serverInfo.name == "bundled-runtime"
     assert json.loads(env_dump.read_text())["DSH_CORDIS_CONFIG"] == str(default_config)
@@ -914,7 +914,7 @@ def test_client_respects_explicit_config_over_bundled_default(
     with HarnessClient(
         HarnessConfig(env={"ENV_DUMP": str(env_dump), "DSH_CORDIS_CONFIG": "./explicit.yml"})
     ) as client:
-        client.initialize(provider="deepseek", cwd="/workspace", model="deepseek-v4-pro")
+        client.initialize(provider="deepseek-official", cwd="/workspace", model="deepseek-v4-pro")
 
     assert json.loads(env_dump.read_text())["DSH_CORDIS_CONFIG"] == "./explicit.yml"
 
diff --git a/scripts/doc-budgets.manifest.json b/scripts/doc-budgets.manifest.json
index 537abeff00..16fa0265d6 100644
--- a/scripts/doc-budgets.manifest.json
+++ b/scripts/doc-budgets.manifest.json
@@ -1,5 +1,5 @@
 {
-  "AGENTS.md": 1765,
+  "AGENTS.md": 1775,
   "docs/AGENTS.md": 1150,
   "docs/architecture.md": 1920,
   "docs/cordis-primer.md": 600,
@@ -7,5 +7,5 @@
   "docs/testing.md": 1100,
   "examples/AGENTS.md": 310,
   "packages/AGENTS.md": 675,
-  "packages/README.md": 905
+  "packages/README.md": 920
 }
diff --git a/scripts/gen-cordis-catalog.ts b/scripts/gen-cordis-catalog.ts
index 67cd6c84f8..86368b03ed 100644
--- a/scripts/gen-cordis-catalog.ts
+++ b/scripts/gen-cordis-catalog.ts
@@ -33,6 +33,7 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   MessageId: 'core.md',
   HookContext: 'core.md',
   SettleReason: 'core.md',
+  AdapterRegistrationHandle: 'core.md',
   LlmCallConfig: 'core.md',
   LlmModelContext: 'core.md',
   LlmModelReasoningInfo: 'core.md',
@@ -40,6 +41,7 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   LlmFailure: 'llm-streaming.md',
   LlmModelInfo: 'core.md',
   LlmProviderInfo: 'core.md',
+  LlmConfigurableProvider: 'core.md',
   ResolvedRetryPolicy: 'llm-streaming.md',
   Message: 'core.md',
   MessageSource: 'core.md',
@@ -190,7 +192,12 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   SettingsRegisterOptions: 'settings.md',
   SettingsScope: 'settings.md',
   SettingsDescriptor: 'settings.md',
+  SettingsPathOp: 'settings.md',
+  SettingsDescribeOptions: 'settings.md',
   SettingsUpdateSource: 'settings.md',
+  CredentialRef: 'credentials.md',
+  CredentialInfo: 'credentials.md',
+  ResolvedCredential: 'credentials.md',
   AskUserQuestionAnswer: 'user-interaction.md',
   AskUserQuestionRequest: 'user-interaction.md',
   UserInteractionProvider: 'user-interaction.md',
diff --git a/scripts/gen-doc-graphs.ts b/scripts/gen-doc-graphs.ts
index 826e326436..77c0302dce 100644
--- a/scripts/gen-doc-graphs.ts
+++ b/scripts/gen-doc-graphs.ts
@@ -158,8 +158,17 @@ const SERVICE_ROLES: ServiceRole[] = [
     title: 'User-settings seam',
     mode: 'seam',
     implementations: ['settings-local'],
-    consumers: [],
-    note: 'Plugins register namespace schemas and resolve layered values; providers store the raw document. No production consumer is migrated yet.',
+    consumers: ['llm-deepseek', 'llm-pi-ai', 'apiproxy'],
+    note: 'Plugins register namespace schemas and resolve layered values; providers store the raw document. The LLM adapters register their entry config as the composition base under the user section; the web gateway serves redacted layered descriptors and writes the user layer.',
+  },
+  {
+    key: 'credentials',
+    pkg: 'credentials',
+    title: 'Credential seam',
+    mode: 'seam',
+    implementations: ['credentials-local'],
+    consumers: ['llm-deepseek', 'llm-pi-ai', 'apiproxy'],
+    note: 'Configuration carries references to secrets; providers own the values. Consumers resolve per operation, so a rotated credential reaches the very next request; the web gateway exposes value-free views and write-only storage.',
   },
   {
     key: 'telemetry',
diff --git a/scripts/project-doc-site.spec.ts b/scripts/project-doc-site.spec.ts
index 28f854fe9b..3892a0e5f3 100644
--- a/scripts/project-doc-site.spec.ts
+++ b/scripts/project-doc-site.spec.ts
@@ -197,7 +197,7 @@ describe('docsPages locale routes', () => {
     const translated = rootPages.filter(page => page.contentLocale === 'zh-CN')
     const fallbacks = rootPages.filter(page => page.contentLocale === 'en-US')
 
-    expect(translated).toHaveLength(19)
+    expect(translated).toHaveLength(20)
     expect(translated.every(page => page.source.endsWith('.zh.md'))).toBe(true)
     expect(fallbacks.map(page => page.source).sort()).toEqual([
       'docs/core-data-structures/commands.md',
diff --git a/scripts/smoke-python-runtime.py b/scripts/smoke-python-runtime.py
index 3ce800932f..415784cd7a 100644
--- a/scripts/smoke-python-runtime.py
+++ b/scripts/smoke-python-runtime.py
@@ -510,7 +510,7 @@ def smoke_sdk_default(base_url: str) -> None:
         root = Path(temporary).resolve()
         sessions = root / "sessions"
         with DeepSeekHarness(
-            provider="deepseek",
+            provider="deepseek-official",
             model="smoke-model",
             cwd=str(root),
             session_root=str(sessions),
@@ -533,7 +533,7 @@ def smoke_sdk_custom(base_url: str, executable: Path) -> None:
         cordis = root / "cordis.yml"
         cordis.write_text(CUSTOM_CORDIS)
         with DeepSeekHarness(
-            provider="deepseek",
+            provider="deepseek-official",
             model="smoke-model",
             cwd=str(root),
             session_root=str(sessions),
@@ -598,7 +598,7 @@ def smoke_sdk_snapshot(base_url: str, executable: Path, update_snapshots: bool)
         cordis = root / "cordis.yml"
         cordis.write_text(CUSTOM_CORDIS)
         with DeepSeekHarness(
-            provider="deepseek",
+            provider="deepseek-official",
             model="smoke-model",
             cwd=str(root),
             session_root=str(sessions),
@@ -648,7 +648,7 @@ def smoke_direct(base_url: str, executable: Path) -> None:
         }
         peer = RuntimePeer([str(executable)], root, environment)
         try:
-            peer.send({"jsonrpc": "2.0", "id": "initialize", "method": "initialize", "params": {"cwd": str(root), "provider": "deepseek", "model": "smoke-model"}})
+            peer.send({"jsonrpc": "2.0", "id": "initialize", "method": "initialize", "params": {"cwd": str(root), "provider": "deepseek-official", "model": "smoke-model"}})
             peer.read_until(lambda message: message.get("id") == "initialize")
             peer.send({
                 "jsonrpc": "2.0",
diff --git a/scripts/snapshots/translation-prompt-v4/request-response.expected.json b/scripts/snapshots/translation-prompt-v4/request-response.expected.json
index 78255907c3..46782f3dca 100644
--- a/scripts/snapshots/translation-prompt-v4/request-response.expected.json
+++ b/scripts/snapshots/translation-prompt-v4/request-response.expected.json
@@ -4,7 +4,7 @@
     "messages": [
       {
         "role": "system",
-        "content": "# Translation Prompt\n\nYou are a senior technical translator specializing in LLM and agent development documentation. Your task is to translate the given source document from English to Chinese, producing natural, professional technical prose.\n\n## Quality Requirements\n\n### Structure and Format Preservation\n- Output a complete translated document that maintains exactly the same structure as the source: heading hierarchy, list shape, table columns, link targets, and code blocks.\n- Fenced code blocks must be byte-identical to the source, including ALL comments inside them. Do NOT translate comments inside code blocks. This is a hard rule with no exceptions.\n- Inline code spans (commands, flags, paths, API names, version numbers) must be kept verbatim. Never translate or reformat them.\n- Every relative link must point to the same target as in the source. Link text is translated; link targets are not.\n- Language switcher line: when translating into Chinese, write `[English](source-filename.md) | 中文`. When translating into English, write `English | [中文](source-filename.zh.md)`. Do NOT copy the switcher line from the source file unchanged — you must flip the link direction.\n- After a closing bold marker `**`, insert a space before the next character when that character is a Latin letter, digit, or CJK ideograph. Never insert a space before any punctuation (full-width or half-width).\n\n### Tone and Style\n- The translation must read as if originally written in the target language by a native speaker. If an expression sounds like a word-for-word rendering from the source language, rephrase it.\n- Write in a professional, formal tone appropriate for developer documentation. Never use colloquial or casual expressions.\n- Use polite imperative forms where the text instructs the reader to do something.\n- Keep the author's register: concise stays concise, detailed stays detailed.\n\n### Sentence Structure\n- Break long sentences with commas or semicolons. Avoid run-on sentences.\n- Prefer active voice. Convert passive constructions to active if it reads more naturally.\n- Translate meaning, not words. Restructure sentences where the target language grammar requires it.\n- Do not invent words or expressions that do not exist in natural technical writing of the target language.\n\n### Word Choice\n- Prefer precise, formal vocabulary over casual or colloquial alternatives.\n- When multiple synonyms exist, choose the one most commonly used in professional technical documentation of the target language.\n- Avoid slang, internal jargon, or overly literal translations that would not be recognized by the general developer audience.\n- Do not use the same word to translate two different source-language terms that carry distinct meanings.\n- Avoid repeating the same verb in close proximity; vary word choice for readability.\n\n#### When translating into Chinese\n- When a number modifies a noun, always include a Chinese classifier or measure word (量词). For example: \"three-package seam\" → \"由三个包构成的 seam\", not \"三包 seam\".\n\n### Punctuation\n\n#### When translating into Chinese\n- Use full-width Chinese punctuation in prose: `，。：；？！（）「」`.\n- Strongly prefer replacing all em-dashes (——) with colons, periods, commas, or parentheses. Keep an em-dash only if no other punctuation works at all.\n- Use enumeration commas (、) between parallel items, not regular commas.\n- List item endings: use semicolons or no punctuation. Do not end list items with commas.\n- Put one half-width space between Chinese text and Latin words/numbers.\n- For RFC 2119 keywords (MUST, MUST NOT, SHOULD, MAY), translate to the corresponding Chinese term (必须、禁止、应当、可以) and keep the SOURCE emphasis marker: plain source stays plain (必须), italic source stays italic (*必须*), and bold source stays bold (**必须**).\n\n#### When translating into English\n(To be added.)\n\n## Terminology\n\nA terminology table is provided below. Follow it strictly:\n- Render every listed term exactly as specified.\n- When the target language is Chinese, use the \"中文\" column. On first occurrence, write the \"首次出现\" value with its parenthetical gloss; on subsequent occurrences, write only the part before the parentheses.\n- When the target language is English, use the \"English\" column without a Chinese gloss; do not copy the \"中文\" or \"首次出现\" value into English prose.\n- If a term has already been glossed as part of a compound term, do not gloss it again when it appears alone later.\n- NEVER use translations listed in the \"不要译作\" column.\n- For technical terms not in the table, follow the target language: for a Chinese target, use an established Chinese rendering from a major Chinese-language OSS or vendor source, or keep the source term and flag it as pending when no such precedent exists; for an English target, use the established English technical term, or preserve an ambiguous source term with a short English gloss and flag it as pending. Do not invent a translation. This rule applies to terminology only; for general prose, freely restructure and paraphrase for natural expression.\n\n# Terminology\n\n本表约定本仓库的中英术语统一译法。\n\n**通用规则：**\n- \"中文\"列为中文译文的正文默认用词。若该列为英文，则中文译文的正文中保留英文不翻译。\n- 首次出现按\"首次出现\"列书写（带括号注释）；后续出现只写括号前的部分（可能为中文，也可能为英文），不出现括号内的注释。\n- \"不要译作\"列为严格禁止的译法。\n- 如果某术语已经作为另一个术语的组成部分被括注过（如 `agent loop（智能体循环）` 中已包含 `agent` 的括注），则该术语后续单独出现时无需再次括注。\n\n## 缩写类（中英文文本中均使用缩写）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| ACP | ACP | ACP（Agent Client Protocol） | | |\n| AI | AI | AI（人工智能） | | |\n| API | API | | | |\n| CI | CI | | | |\n| CLI | CLI | CLI（命令行界面） | | |\n| e2e | e2e | | | |\n| HMR | HMR | HMR（热模块替换） | | |\n| JSON Schema | JSON Schema | | | |\n| JSONL | JSONL | | | |\n| LLM | LLM | LLM（大语言模型） | | |\n| MCP | MCP | | | |\n| PR | PR | PR（Pull Request） | | |\n| RAG | RAG | RAG（检索增强生成） | | |\n| SDK | SDK | | | |\n| SSE | SSE | SSE（Server-Sent Events） | | |\n\n## 英文类（中英文文本中均使用英文）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| agent | agent | agent（智能体） | | |\n| Agent Note | Agent Note | Agent Note（agent 决策记录） | 智能体注记、智能体笔记 | 本仓库中由 agent 撰写的提案与决策记录 |\n| agent harness | agent harness | agent harness（智能体框架） | | agent 组合词（agent harness/workflow/loop/skill 等）整体保留英文；未括注过 agent 时首现按对应组合词或 agent 行处理 |\n| agent loop | agent loop | agent loop（智能体循环） | | |\n| blob hash | blob hash | | | `git hash-object` 的结果 |\n| Cordis | Cordis | | | |\n| dispose | dispose | dispose（资源释放） | | |\n| doc-sync | doc-sync | doc-sync（文档同步门禁） | | |\n| fiber | fiber | | | |\n| fixture | fixture | fixture（测试前置数据） | | |\n| fork | fork | | | |\n| Function Calling | Function Calling | Function Calling（函数调用） | | |\n| harness | harness | | | |\n| harness engineering | harness engineering | | | |\n| lint | lint | | | |\n| mock | mock | | | 保留英文；指测试替身 |\n| loader | loader | | | |\n| manifest | manifest | manifest（元数据清单） | | |\n| monorepo | monorepo | | | |\n| Round | Round | | 回合、目标回合、Ralph 回合 | 外层策略使用 Round 时，领域层级为 Session > Round > Turn（轮次） > Step（步骤）；Round 是可选的外层策略迭代，并非每个会话轮次都具有的通用层级。Goal Round 与 Ralph Round 均保留英文。一个 Round 承载一个轮次，步骤隶属于该轮次；明确的零步骤轮次仍保持原义。 |\n| schema | schema | | | |\n| schema DSL | schema DSL | | | |\n| seam | seam | | 接缝 | 与 `extension point` 是不同概念；根据具体语境，可译为`服务边界`或`可替换点` |\n| skill | skill | skill（技能） | | |\n| spawn | spawn | | | |\n| steering | steering | steering（中途引导） | | |\n| task id | task id | | 任务 id | 保留英文 |\n| subagent | subagent | | | |\n| thinking | thinking | | | API 字段保留英文；描述模型模式时译为`思考` |\n| transcript | transcript | transcript（文本记录） | | 指会话渲染给用户或编辑器的完整文本，区别于事件日志 |\n| waterfall | waterfall | waterfall（瀑布式事件） | | |\n| wheel | wheel 包 | | | Python 打包格式 |\n| worktree | worktree | | | git 工作区概念 |\n| Zstandard | Zstandard | | | RFC 8878 compression format; `zstd` remains a code value. |\n\n## 双语类（中英文文本各自使用中英文）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| adapter | 适配器 | | | |\n| adapter contract | 适配器契约 | 适配器契约（adapter contract） | | |\n| append-only | 仅追加 | | | |\n| artifact | 产物 | | 制品 | |\n| backend | 后端 | | | |\n| background task | 后台任务 | | | |\n| block | 块 | | | |\n| build target | 构建目标 | | | |\n| cancel | 取消 | | | |\n| canary test | canary 测试 | | 金丝雀测试 | 本仓库保留 `canary` |\n| capability seam | 能力 seam | | 功能 seam、能力接缝 | 本仓库接口、实现与消费方分离的命名架构概念；普通 `seam` 仍按其词条处理 |\n| feature | 功能 | | 能力 | SDK 产品与工程模型中的可管理产品单元 |\n| feature option | 功能选项 | | variant | 一项 SDK 功能内有限、可选择的实现或配置 |\n| checkpoint | 检查点 | | | |\n| chunk | 分片 | | | |\n| compaction | 压缩 | 压缩（compaction） | | |\n| companion tool | 配套工具 | | | |\n| composition bundle | 组合包 | | | 只约束应用或插件的组合语境，不约束所有 `bundle` |\n| Cordis plugin config | Cordis 插件配置 | | | Cordis 插件公开的 `Config` 对象或配置结构 |\n| config key | 配置键 | | | Cordis 插件配置中的单个字段 |\n| consumer | 消费方 | | 消费者 | |\n| content block | 内容块 | | | |\n| Cookbook | 实操手册 | | | 文档标题用语 |\n| context | 上下文 | | | |\n| counterpart | 对侧文件 | | 对应物、配对物 | 双语配对语境；泛指\"另一侧\"时可写「另一侧」 |\n| context compaction | 上下文压缩 | 上下文压缩（context compaction） | | |\n| contract | 契约 | | | 如：`pairing contract` →`配对契约` |\n| Cordis config entry | Cordis 配置项 | | | 指 `cordis.yml` 插件列表中的一项；插件实现本身写`Cordis 插件` |\n| Cordis plugin | Cordis 插件 | | | Cordis 加载的插件实现，不指 `cordis.yml` 中的一项配置 |\n| coverage | 覆盖率 | | | |\n| crash recovery | 崩溃恢复 | | | |\n| deploy root | 部署根目录 | | | |\n| durability | 持久性 | | | |\n| feature requirement | 功能依赖 | | | 功能或功能选项通过 `requires` 声明的关系 |\n| ergonomics | 易用性 / 开发体验 | | 人体工学 | API 或面向模型的接口用「易用性」；工具链或开发者工作流用「开发体验」 |\n| event | 事件 | | | |\n| event log | 事件日志 | | | |\n| event stream | 事件流 | | | |\n| event-sourced | 事件溯源 | | | 沿用 DDD 社区通行译法 |\n| Executive summary | 摘要 | | | 事故复盘标题用语 |\n| executor | 执行器 | | | |\n| expected output | 预期输出 | | 金标 | 指 snapshot 比较产物；翻译语料的人工校准样例不在此列 |\n| extension | 扩展 | | | |\n| extension point | 扩展点 | | | 注意与 `seam` 区分 |\n| fail-fast | 快速失败 | | | |\n| fenced code block | 围栏代码块 | | | 沿用 MDN 中文翻译 |\n| fingerprint | 指纹 | | | 通用内容指纹；双语配对机制使用 sidecar record 记录两侧 blob hash |\n| finish reason | 结束原因 | | | |\n| foreground run | 前台运行 | | | |\n| freshness | 新鲜度 | | | 沿用 MDN 中文翻译；在本项目中指译文相对源文的同步状态 |\n| hook | 钩子 | | | |\n| implementation | 实现 | | | |\n| inference | 推理 | 推理（inference） | | 需要和 `reasoning` 区分时保留英文括注 |\n| info string | 信息字符串 | | | 沿用 CommonMark 中文翻译；指代码围栏 ``` 之后的语言标注 |\n| injection | 注入 | | | |\n| integration | 集成 | | | |\n| interface | 接口 | | | |\n| language switcher | 语言切换行 | | | i18n 配对机制用语：双语配对文件顶部的互链行 |\n| memory | 记忆 / 内存 | | | 与 `agent` 搭配时译为`记忆`（如 `agent memory` →`智能体记忆`）；指系统资源时译为`内存` |\n| merge | 合并 | | | |\n| message | 消息 | | | |\n| mod | 模组 | | | |\n| model provider | 模型提供方 | | | |\n| module | 模块 | | | |\n| non-escalation | 非升权 | | 非升级、不可升级 | 仅用于安全与权限语境，指主体不得获得超出既有授权的权限；普通升级不适用此行 |\n| npm dependency | NPM 依赖 | | | `package.json` 中的包关系；`dependencies`、`devDependencies` 等字段保持原样 |\n| opt-out ratio | opt-out 比例 | | 退出检查比例 | |\n| orphan | 遗留 | | 孤儿、孤立 | 指英文源已不存在的 `.zh.md`（如「遗留译文」）；进程语境按 OS 惯用语译「孤儿进程」 |\n| orphan branch | 孤立分支 | | 孤儿分支 | 沿用 git 官方中文翻译 |\n| package | 包 | 包（package） | | 指 npm 包（`@deepseek-ai/dsh-*`）；`package.json` 等代码标识保持原样 |\n| pairing | 配对 | | | |\n| parent-subset grants | 父级子集授权 | | 父集合授权 | 指授权范围仅限于父级所持授权的子集 |\n| peer dependency | 对等依赖 | 对等依赖（peer dependency） | | |\n| permission | 权限 | | | |\n| persistence | 持久化 | | | |\n| pipeline | 流水线 | | | |\n| plugin | 插件 | | | |\n| postmortem | 事故复盘 | 事故复盘（postmortem） | 事后分析、事故记录 | 事故记录与分析文档；目录或路径中的 `postmortem` 保持代码形式 |\n| prompt | 提示词 | | | |\n| provider | 提供方 | | | |\n| provider-neutral | 提供方无关 | | 提供方中立 | |\n| quality gate | 质量门禁 | | | |\n| quiescence | 完全停稳 | | 静默、静止状态 | 指生命周期工作全部结算后的状态 |\n| reasoning | 推理 | 推理（reasoning） | | 需要和 `inference` 区分时保留英文括注 |\n| reasoning_content | 思考内容 | | | |\n| registry | 注册表 | | | |\n| replay | 回放 | | | |\n| resume | 恢复 | | | |\n| runtime | 运行时 | | | |\n| same-world subprocess | 与宿主共享文件系统和内核的子进程 | | 同世界子进程 | |\n| sandbox | 沙箱 | | | |\n| service | 服务 | | | |\n| serving surface | 对外服务接口 | | | |\n| session | 会话 | | | |\n| session event | 会话事件 | | | |\n| sidecar record | 伴随记录 | | 旁挂记录 | 指与文档同目录的伴随记录文件 |\n| smoke test | 冒烟测试 | | | |\n| snapshot | 快照 | | | |\n| source of truth | 真源 | | 事实来源、唯一来源 | |\n| spine | 主干 | | | |\n| staged | 暂存 | | | 沿用 git 官方中文翻译 |\n| stale | 陈旧 | | 过期 | 与 `fresh`（`新鲜`）成对；门禁输出中保留英文 `stale` 不翻译；`expired` 才译为`过期` |\n| step | 步骤 | | | |\n| stream | 流 | | | |\n| streaming | 流式输出 | | | |\n| structural signature | 结构签名 | | | i18n 配对机制用语：门禁比对两侧文件时提取的有序结构序列（标题层级、代码块、列表等） |\n| Summary | 概述 | | | 事故复盘标题用语 |\n| system prompt | 系统提示词 | | | |\n| taxonomy | 分类体系 | | | |\n| token usage | token 用量 | | | |\n| tool | 工具 | | | |\n| tool call | 工具调用 | | | |\n| tool result | 工具结果 | | | |\n| tool schema | 工具 schema | | | |\n| toolkit | 工具包 | | | |\n| turn | 轮次 | | | |\n| VFS | VFS | 虚拟文件系统（VFS） | | |\n| typecheck | 类型检查 | | | |\n| vocabulary | 词汇 | | | |\n| wire format | 协议格式 | 协议格式（wire format） | | |\n| workflow | 工作流 | | | |\n| wrapper | 包装层 | | | 软件层或 SDK 包装层 |\n| wrapper script | 包装脚本 | | | 可执行脚本包装层 |\n\n\n## Output Format\n\nProduce your output in three XML sections:\n\nThe outer section tags are framing. If Markdown inside any section body contains a line consisting only of `<translation>`, `</translation>`, `<review>`, `</review>`, `<final>`, or `</final>`, prefix that line with `\\`. If the original line already has one or more backslashes immediately before the tag, add one more. The parser removes exactly one framing escape; tags mentioned inline need no escaping.\n\n```xml\n<translation>\n(Complete translation of the source document)\n</translation>\n\n<review>\n(Self-review notes, one correction per line with category tag, e.g.)\n- [Tone] \"旁挂记录\" → \"伴随记录\"（生造词）\n- [Sentence] 第 3 段补充逗号断句\n- [Punctuation] 两处破折号替换为冒号\n- 无修正\n</review>\n\n<final>\n(Final translation after corrections)\n</final>\n```\n\n## Self-Review Instructions\n\nAfter writing `<translation>`, re-read it in the target language only, without looking at the source. Check by category:\n\n**Structure**\n- Is the heading hierarchy, list shape, and code block content identical to the source?\n- Are ALL comments inside code blocks left untranslated (byte-identical to source)?\n- Is the language switcher line correctly flipped (not copied from source)?\n- Are link targets preserved, and are spaces after bold markers present only before Latin letters, digits, or CJK ideographs?\n- Are wrapper-tag lines inside section bodies escaped with one additional backslash?\n\n**Tone & Style**\n- Does every sentence read as if originally written by a native speaker?\n- Is there any colloquial, casual, or overly informal phrasing?\n\n**Sentence Structure**\n- Are there run-on sentences that need breaking?\n- Are there stiff passive constructions that should be converted to active voice?\n\n**Word Choice**\n- Are there overly literal translations that sound unnatural?\n- Is the same target-language word used to translate two distinct source concepts?\n- Is any slang or internal jargon present?\n\n**Terminology**\n- For a Chinese target, are first-occurrence glosses correctly applied (not missing, not repeated)? For an English target, are Chinese glosses absent?\n- Are any \"不要译作\" forbidden translations present?\n- For unlisted terms, does a Chinese target use established Chinese precedent or retain the source term as pending, and does an English target use established English terminology or preserve only an ambiguous source term with a short English gloss?\n\n**Punctuation** (when target is Chinese)\n- Are there em-dashes that should be replaced with colons, periods, or commas?\n- Are list items ending with commas instead of semicolons?\n- Do RFC 2119 keywords preserve the source emphasis exactly?\n\nRecord corrections in `<review>` with category tags. Then output the corrected version in `<final>`. If no corrections are needed, write \"无修正\" in `<review>` and copy the translation unchanged into `<final>`.\n\n## Examples\n\nBelow are representative examples of common problems and their corrections. Follow the \"Good\" versions.\n\n### Colloquial verb → Professional verb\n- Source: `The repo pins pnpm@11.7.0 in package.json`\n- Bad: `仓库在 package.json 中钉住 pnpm@11.7.0`\n- Good: `该仓库在 package.json 中固定使用 pnpm@11.7.0`\n\n### Run-on sentence → Natural phrasing with pause\n- Source: `Read docs/architecture.md before changing anything under packages/.`\n- Bad: `改动 packages/ 下的任何东西之前先读 docs/architecture.md。`\n- Good: `在修改 packages/ 目录下的任何内容之前，请先阅读 docs/architecture.md。`\n\n### Stiff passive voice → Active and natural\n- Source: `a green gate means the pair was confirmed consistent at these exact contents, not that the confirmation was sound.`\n- Bad: `门禁绿意味着这对文档曾在当前内容上被确认一致，不意味着这次确认本身是对的。`\n- Good: `门禁通过意味着这组文档在当前内容上的一致性得到了确认，不代表确认本身正确可靠。`\n\n### Invented word → Natural expression\n- Source: `A sidecar record of both blob hashes makes consistency checkable`\n- Bad: `旁挂记录两侧 blob hash，使一致性可检查`\n- Good: `伴随记录保存两侧 blob hash，使一致性可检查`\n\n### Em-dash → Colon/period\n- Source: `FIXME — an issue that should block a new release. A release should not ship with an open FIXME unless reviewers explicitly agree the change can be merged anyway.`\n- Bad: `FIXME——应当阻塞新版本发布的问题。除非评审者明确同意可以照常合入，发布不应带着未解决的 FIXME 出门。`\n- Good: `FIXME：应当阻塞新版本发布的问题。除非评审者明确同意该更改可以合并，否则发布版本不应包含未解决的 FIXME。`\n\n### Overly literal → Meaningful rendering\n- Source: `awkward phrasing is easier to hear without the source anchoring you`\n- Bad: `没有源文锚着，别扭的表述更容易被听出来`\n- Good: `不对照原文时，更容易察觉别扭的表达`\n\n### Terminology — do not translate what should be kept in English\n- Source: `typed service seams, and explicit extension points`\n- Bad: `类型化的服务 seam（扩展点）与显式扩展点`\n- Good: `类型化的服务 seam 与显式扩展点`\n\n### Slang/jargon → Professional phrasing\n- Source: `The committed agent workflow lives in .agents/skills/dsh-translate-docs`\n- Bad: `进仓的 agent 工作流见 .agents/skills/dsh-translate-docs`\n- Good: `仓库内置的 agent 工作流见 .agents/skills/dsh-translate-docs`\n\n### \"For humans\" — translate the intent, not the word\n- Source: `For humans, start with the development guide`\n- Bad: `对于人工读者，请先从开发指南开始`（\"人工读者\"生硬）\n- Good: `面向开发者：请先阅读开发指南`（\"开发者\"自然，且中文里冒号在此处更自然）\n\n### Code block comments — NEVER translate\n- Source code block contains: `# full-screen TUI coding agent (needs DEEPSEEK_API_KEY)`\n- Bad: `# 全屏 TUI coding agent（需要 DEEPSEEK_API_KEY）`\n- Good: `# full-screen TUI coding agent (needs DEEPSEEK_API_KEY)` (keep exactly as-is, byte-for-byte)\n\n### Language switcher — flip direction\n- Source file (English) has: `English | [中文](README.zh.md)`\n- Bad (copying source unchanged): `English | [中文](README.zh.md)`\n- Good (flipped for Chinese file): `[English](README.md) | 中文`\n\n---\n\nNow translate the following document:"
+        "content": "# Translation Prompt\n\nYou are a senior technical translator specializing in LLM and agent development documentation. Your task is to translate the given source document from English to Chinese, producing natural, professional technical prose.\n\n## Quality Requirements\n\n### Structure and Format Preservation\n- Output a complete translated document that maintains exactly the same structure as the source: heading hierarchy, list shape, table columns, link targets, and code blocks.\n- Fenced code blocks must be byte-identical to the source, including ALL comments inside them. Do NOT translate comments inside code blocks. This is a hard rule with no exceptions.\n- Inline code spans (commands, flags, paths, API names, version numbers) must be kept verbatim. Never translate or reformat them.\n- Every relative link must point to the same target as in the source. Link text is translated; link targets are not.\n- Language switcher line: when translating into Chinese, write `[English](source-filename.md) | 中文`. When translating into English, write `English | [中文](source-filename.zh.md)`. Do NOT copy the switcher line from the source file unchanged — you must flip the link direction.\n- After a closing bold marker `**`, insert a space before the next character when that character is a Latin letter, digit, or CJK ideograph. Never insert a space before any punctuation (full-width or half-width).\n\n### Tone and Style\n- The translation must read as if originally written in the target language by a native speaker. If an expression sounds like a word-for-word rendering from the source language, rephrase it.\n- Write in a professional, formal tone appropriate for developer documentation. Never use colloquial or casual expressions.\n- Use polite imperative forms where the text instructs the reader to do something.\n- Keep the author's register: concise stays concise, detailed stays detailed.\n\n### Sentence Structure\n- Break long sentences with commas or semicolons. Avoid run-on sentences.\n- Prefer active voice. Convert passive constructions to active if it reads more naturally.\n- Translate meaning, not words. Restructure sentences where the target language grammar requires it.\n- Do not invent words or expressions that do not exist in natural technical writing of the target language.\n\n### Word Choice\n- Prefer precise, formal vocabulary over casual or colloquial alternatives.\n- When multiple synonyms exist, choose the one most commonly used in professional technical documentation of the target language.\n- Avoid slang, internal jargon, or overly literal translations that would not be recognized by the general developer audience.\n- Do not use the same word to translate two different source-language terms that carry distinct meanings.\n- Avoid repeating the same verb in close proximity; vary word choice for readability.\n\n#### When translating into Chinese\n- When a number modifies a noun, always include a Chinese classifier or measure word (量词). For example: \"three-package seam\" → \"由三个包构成的 seam\", not \"三包 seam\".\n\n### Punctuation\n\n#### When translating into Chinese\n- Use full-width Chinese punctuation in prose: `，。：；？！（）「」`.\n- Strongly prefer replacing all em-dashes (——) with colons, periods, commas, or parentheses. Keep an em-dash only if no other punctuation works at all.\n- Use enumeration commas (、) between parallel items, not regular commas.\n- List item endings: use semicolons or no punctuation. Do not end list items with commas.\n- Put one half-width space between Chinese text and Latin words/numbers.\n- For RFC 2119 keywords (MUST, MUST NOT, SHOULD, MAY), translate to the corresponding Chinese term (必须、禁止、应当、可以) and keep the SOURCE emphasis marker: plain source stays plain (必须), italic source stays italic (*必须*), and bold source stays bold (**必须**).\n\n#### When translating into English\n(To be added.)\n\n## Terminology\n\nA terminology table is provided below. Follow it strictly:\n- Render every listed term exactly as specified.\n- When the target language is Chinese, use the \"中文\" column. On first occurrence, write the \"首次出现\" value with its parenthetical gloss; on subsequent occurrences, write only the part before the parentheses.\n- When the target language is English, use the \"English\" column without a Chinese gloss; do not copy the \"中文\" or \"首次出现\" value into English prose.\n- If a term has already been glossed as part of a compound term, do not gloss it again when it appears alone later.\n- NEVER use translations listed in the \"不要译作\" column.\n- For technical terms not in the table, follow the target language: for a Chinese target, use an established Chinese rendering from a major Chinese-language OSS or vendor source, or keep the source term and flag it as pending when no such precedent exists; for an English target, use the established English technical term, or preserve an ambiguous source term with a short English gloss and flag it as pending. Do not invent a translation. This rule applies to terminology only; for general prose, freely restructure and paraphrase for natural expression.\n\n# Terminology\n\n本表约定本仓库的中英术语统一译法。\n\n**通用规则：**\n- \"中文\"列为中文译文的正文默认用词。若该列为英文，则中文译文的正文中保留英文不翻译。\n- 首次出现按\"首次出现\"列书写（带括号注释）；后续出现只写括号前的部分（可能为中文，也可能为英文），不出现括号内的注释。\n- \"不要译作\"列为严格禁止的译法。\n- 如果某术语已经作为另一个术语的组成部分被括注过（如 `agent loop（智能体循环）` 中已包含 `agent` 的括注），则该术语后续单独出现时无需再次括注。\n\n## 缩写类（中英文文本中均使用缩写）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| ACP | ACP | ACP（Agent Client Protocol） | | |\n| AI | AI | AI（人工智能） | | |\n| API | API | | | |\n| CI | CI | | | |\n| CLI | CLI | CLI（命令行界面） | | |\n| e2e | e2e | | | |\n| HMR | HMR | HMR（热模块替换） | | |\n| JSON Schema | JSON Schema | | | |\n| JSONL | JSONL | | | |\n| LLM | LLM | LLM（大语言模型） | | |\n| MCP | MCP | | | |\n| PR | PR | PR（Pull Request） | | |\n| RAG | RAG | RAG（检索增强生成） | | |\n| SDK | SDK | | | |\n| SSE | SSE | SSE（Server-Sent Events） | | |\n\n## 英文类（中英文文本中均使用英文）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| agent | agent | agent（智能体） | | |\n| Agent Note | Agent Note | Agent Note（agent 决策记录） | 智能体注记、智能体笔记 | 本仓库中由 agent 撰写的提案与决策记录 |\n| agent harness | agent harness | agent harness（智能体框架） | | agent 组合词（agent harness/workflow/loop/skill 等）整体保留英文；未括注过 agent 时首现按对应组合词或 agent 行处理 |\n| agent loop | agent loop | agent loop（智能体循环） | | |\n| blob hash | blob hash | | | `git hash-object` 的结果 |\n| Cordis | Cordis | | | |\n| dispose | dispose | dispose（资源释放） | | |\n| doc-sync | doc-sync | doc-sync（文档同步门禁） | | |\n| fiber | fiber | | | |\n| fixture | fixture | fixture（测试前置数据） | | |\n| fork | fork | | | |\n| Function Calling | Function Calling | Function Calling（函数调用） | | |\n| harness | harness | | | |\n| harness engineering | harness engineering | | | |\n| lint | lint | | | |\n| mock | mock | | | 保留英文；指测试替身 |\n| loader | loader | | | |\n| manifest | manifest | manifest（元数据清单） | | |\n| monorepo | monorepo | | | |\n| Round | Round | | 回合、目标回合、Ralph 回合 | 外层策略使用 Round 时，领域层级为 Session > Round > Turn（轮次） > Step（步骤）；Round 是可选的外层策略迭代，并非每个会话轮次都具有的通用层级。Goal Round 与 Ralph Round 均保留英文。一个 Round 承载一个轮次，步骤隶属于该轮次；明确的零步骤轮次仍保持原义。 |\n| schema | schema | | | |\n| schema DSL | schema DSL | | | |\n| seam | seam | | 接缝 | 与 `extension point` 是不同概念；根据具体语境，可译为`服务边界`或`可替换点` |\n| skill | skill | skill（技能） | | |\n| spawn | spawn | | | |\n| steering | steering | steering（中途引导） | | |\n| task id | task id | | 任务 id | 保留英文 |\n| subagent | subagent | | | |\n| thinking | thinking | | | API 字段保留英文；描述模型模式时译为`思考` |\n| transcript | transcript | transcript（文本记录） | | 指会话渲染给用户或编辑器的完整文本，区别于事件日志 |\n| waterfall | waterfall | waterfall（瀑布式事件） | | |\n| wheel | wheel 包 | | | Python 打包格式 |\n| worktree | worktree | | | git 工作区概念 |\n| Zstandard | Zstandard | | | RFC 8878 compression format; `zstd` remains a code value. |\n\n## 双语类（中英文文本各自使用中英文）\n\n| English | 中文 | 首次出现 | 不要译作 | 备注 |\n|---|---|---|---|---|\n| adapter | 适配器 | | | |\n| adapter contract | 适配器契约 | 适配器契约（adapter contract） | | |\n| append-only | 仅追加 | | | |\n| artifact | 产物 | | 制品 | |\n| backend | 后端 | | | |\n| background task | 后台任务 | | | |\n| block | 块 | | | |\n| build target | 构建目标 | | | |\n| cancel | 取消 | | | |\n| canary test | canary 测试 | | 金丝雀测试 | 本仓库保留 `canary` |\n| capability seam | 能力 seam | | 功能 seam、能力接缝 | 本仓库接口、实现与消费方分离的命名架构概念；普通 `seam` 仍按其词条处理 |\n| feature | 功能 | | 能力 | SDK 产品与工程模型中的可管理产品单元 |\n| feature option | 功能选项 | | variant | 一项 SDK 功能内有限、可选择的实现或配置 |\n| checkpoint | 检查点 | | | |\n| chunk | 分片 | | | |\n| compaction | 压缩 | 压缩（compaction） | | |\n| companion tool | 配套工具 | | | |\n| composition bundle | 组合包 | | | 只约束应用或插件的组合语境，不约束所有 `bundle` |\n| Cordis plugin config | Cordis 插件配置 | | | Cordis 插件公开的 `Config` 对象或配置结构 |\n| config key | 配置键 | | | Cordis 插件配置中的单个字段 |\n| consumer | 消费方 | | 消费者 | |\n| content block | 内容块 | | | |\n| Cookbook | 实操手册 | | | 文档标题用语 |\n| context | 上下文 | | | |\n| counterpart | 对侧文件 | | 对应物、配对物 | 双语配对语境；泛指\"另一侧\"时可写「另一侧」 |\n| configurable-provider directory | 可配置提供方目录 | | | llm seam 中 `registerConfigurableProviders()` 维护的目录；沿用 Service Catalog →「服务目录」先例 |\n| context compaction | 上下文压缩 | 上下文压缩（context compaction） | | |\n| contract | 契约 | | | 如：`pairing contract` →`配对契约` |\n| Cordis config entry | Cordis 配置项 | | | 指 `cordis.yml` 插件列表中的一项；插件实现本身写`Cordis 插件` |\n| Cordis plugin | Cordis 插件 | | | Cordis 加载的插件实现，不指 `cordis.yml` 中的一项配置 |\n| coverage | 覆盖率 | | | |\n| crash recovery | 崩溃恢复 | | | |\n| deploy root | 部署根目录 | | | |\n| dormant | 休眠 | | 睡眠、蛰伏 | 指已声明可配置但当前未注册路由的提供方 |\n| durability | 持久性 | | | |\n| feature requirement | 功能依赖 | | | 功能或功能选项通过 `requires` 声明的关系 |\n| ergonomics | 易用性 / 开发体验 | | 人体工学 | API 或面向模型的接口用「易用性」；工具链或开发者工作流用「开发体验」 |\n| event | 事件 | | | |\n| event log | 事件日志 | | | |\n| event stream | 事件流 | | | |\n| event-sourced | 事件溯源 | | | 沿用 DDD 社区通行译法 |\n| Executive summary | 摘要 | | | 事故复盘标题用语 |\n| executor | 执行器 | | | |\n| expected output | 预期输出 | | 金标 | 指 snapshot 比较产物；翻译语料的人工校准样例不在此列 |\n| extension | 扩展 | | | |\n| extension point | 扩展点 | | | 注意与 `seam` 区分 |\n| fail-fast | 快速失败 | | | |\n| fenced code block | 围栏代码块 | | | 沿用 MDN 中文翻译 |\n| fingerprint | 指纹 | | | 通用内容指纹；双语配对机制使用 sidecar record 记录两侧 blob hash |\n| finish reason | 结束原因 | | | |\n| fold | 折叠区 | | | 配置界面语境：默认收起的字段分区（collapsed →「收起」）|\n| foreground run | 前台运行 | | | |\n| freshness | 新鲜度 | | | 沿用 MDN 中文翻译；在本项目中指译文相对源文的同步状态 |\n| hook | 钩子 | | | |\n| implementation | 实现 | | | |\n| inference | 推理 | 推理（inference） | | 需要和 `reasoning` 区分时保留英文括注 |\n| info string | 信息字符串 | | | 沿用 CommonMark 中文翻译；指代码围栏 ``` 之后的语言标注 |\n| injection | 注入 | | | |\n| integration | 集成 | | | |\n| interface | 接口 | | | |\n| language switcher | 语言切换行 | | | i18n 配对机制用语：双语配对文件顶部的互链行 |\n| memory | 记忆 / 内存 | | | 与 `agent` 搭配时译为`记忆`（如 `agent memory` →`智能体记忆`）；指系统资源时译为`内存` |\n| merge | 合并 | | | |\n| message | 消息 | | | |\n| mod | 模组 | | | |\n| model provider | 模型提供方 | | | |\n| module | 模块 | | | |\n| non-escalation | 非升权 | | 非升级、不可升级 | 仅用于安全与权限语境，指主体不得获得超出既有授权的权限；普通升级不适用此行 |\n| npm dependency | NPM 依赖 | | | `package.json` 中的包关系；`dependencies`、`devDependencies` 等字段保持原样 |\n| opt-out ratio | opt-out 比例 | | 退出检查比例 | |\n| orphan | 遗留 | | 孤儿、孤立 | 指英文源已不存在的 `.zh.md`（如「遗留译文」）；进程语境按 OS 惯用语译「孤儿进程」 |\n| orphan branch | 孤立分支 | | 孤儿分支 | 沿用 git 官方中文翻译 |\n| package | 包 | 包（package） | | 指 npm 包（`@deepseek-ai/dsh-*`）；`package.json` 等代码标识保持原样 |\n| pairing | 配对 | | | |\n| parent-subset grants | 父级子集授权 | | 父集合授权 | 指授权范围仅限于父级所持授权的子集 |\n| peer dependency | 对等依赖 | 对等依赖（peer dependency） | | |\n| permission | 权限 | | | |\n| persistence | 持久化 | | | |\n| pipeline | 流水线 | | | |\n| plugin | 插件 | | | |\n| postmortem | 事故复盘 | 事故复盘（postmortem） | 事后分析、事故记录 | 事故记录与分析文档；目录或路径中的 `postmortem` 保持代码形式 |\n| prompt | 提示词 | | | |\n| provider | 提供方 | | | |\n| provider-neutral | 提供方无关 | | 提供方中立 | |\n| quality gate | 质量门禁 | | | |\n| quiescence | 完全停稳 | | 静默、静止状态 | 指生命周期工作全部结算后的状态 |\n| reasoning | 推理 | 推理（reasoning） | | 需要和 `inference` 区分时保留英文括注 |\n| reasoning_content | 思考内容 | | | |\n| registry | 注册表 | | | |\n| replay | 回放 | | | |\n| resume | 恢复 | | | |\n| runtime | 运行时 | | | |\n| same-world subprocess | 与宿主共享文件系统和内核的子进程 | | 同世界子进程 | |\n| sandbox | 沙箱 | | | |\n| service | 服务 | | | |\n| serving surface | 对外服务接口 | | | |\n| session | 会话 | | | |\n| session event | 会话事件 | | | |\n| setup card | 设置卡片 | | | 首次运行时代替行卡直接展开的配置卡 |\n| sidecar record | 伴随记录 | | 旁挂记录 | 指与文档同目录的伴随记录文件 |\n| smoke test | 冒烟测试 | | | |\n| snapshot | 快照 | | | |\n| source of truth | 真源 | | 事实来源、唯一来源 | |\n| spine | 主干 | | | |\n| staged | 暂存 | | | 沿用 git 官方中文翻译 |\n| stale | 陈旧 | | 过期 | 与 `fresh`（`新鲜`）成对；门禁输出中保留英文 `stale` 不翻译；`expired` 才译为`过期` |\n| step | 步骤 | | | |\n| stream | 流 | | | |\n| streaming | 流式输出 | | | |\n| structural signature | 结构签名 | | | i18n 配对机制用语：门禁比对两侧文件时提取的有序结构序列（标题层级、代码块、列表等） |\n| Summary | 概述 | | | 事故复盘标题用语 |\n| system prompt | 系统提示词 | | | |\n| taxonomy | 分类体系 | | | |\n| token usage | token 用量 | | | |\n| tool | 工具 | | | |\n| tool call | 工具调用 | | | |\n| tool result | 工具结果 | | | |\n| tool schema | 工具 schema | | | |\n| toolkit | 工具包 | | | |\n| turn | 轮次 | | | |\n| VFS | VFS | 虚拟文件系统（VFS） | | |\n| typecheck | 类型检查 | | | |\n| vocabulary | 词汇 | | | |\n| wire format | 协议格式 | 协议格式（wire format） | | |\n| workflow | 工作流 | | | |\n| wrapper | 包装层 | | | 软件层或 SDK 包装层 |\n| wrapper script | 包装脚本 | | | 可执行脚本包装层 |\n\n\n## Output Format\n\nProduce your output in three XML sections:\n\nThe outer section tags are framing. If Markdown inside any section body contains a line consisting only of `<translation>`, `</translation>`, `<review>`, `</review>`, `<final>`, or `</final>`, prefix that line with `\\`. If the original line already has one or more backslashes immediately before the tag, add one more. The parser removes exactly one framing escape; tags mentioned inline need no escaping.\n\n```xml\n<translation>\n(Complete translation of the source document)\n</translation>\n\n<review>\n(Self-review notes, one correction per line with category tag, e.g.)\n- [Tone] \"旁挂记录\" → \"伴随记录\"（生造词）\n- [Sentence] 第 3 段补充逗号断句\n- [Punctuation] 两处破折号替换为冒号\n- 无修正\n</review>\n\n<final>\n(Final translation after corrections)\n</final>\n```\n\n## Self-Review Instructions\n\nAfter writing `<translation>`, re-read it in the target language only, without looking at the source. Check by category:\n\n**Structure**\n- Is the heading hierarchy, list shape, and code block content identical to the source?\n- Are ALL comments inside code blocks left untranslated (byte-identical to source)?\n- Is the language switcher line correctly flipped (not copied from source)?\n- Are link targets preserved, and are spaces after bold markers present only before Latin letters, digits, or CJK ideographs?\n- Are wrapper-tag lines inside section bodies escaped with one additional backslash?\n\n**Tone & Style**\n- Does every sentence read as if originally written by a native speaker?\n- Is there any colloquial, casual, or overly informal phrasing?\n\n**Sentence Structure**\n- Are there run-on sentences that need breaking?\n- Are there stiff passive constructions that should be converted to active voice?\n\n**Word Choice**\n- Are there overly literal translations that sound unnatural?\n- Is the same target-language word used to translate two distinct source concepts?\n- Is any slang or internal jargon present?\n\n**Terminology**\n- For a Chinese target, are first-occurrence glosses correctly applied (not missing, not repeated)? For an English target, are Chinese glosses absent?\n- Are any \"不要译作\" forbidden translations present?\n- For unlisted terms, does a Chinese target use established Chinese precedent or retain the source term as pending, and does an English target use established English terminology or preserve only an ambiguous source term with a short English gloss?\n\n**Punctuation** (when target is Chinese)\n- Are there em-dashes that should be replaced with colons, periods, or commas?\n- Are list items ending with commas instead of semicolons?\n- Do RFC 2119 keywords preserve the source emphasis exactly?\n\nRecord corrections in `<review>` with category tags. Then output the corrected version in `<final>`. If no corrections are needed, write \"无修正\" in `<review>` and copy the translation unchanged into `<final>`.\n\n## Examples\n\nBelow are representative examples of common problems and their corrections. Follow the \"Good\" versions.\n\n### Colloquial verb → Professional verb\n- Source: `The repo pins pnpm@11.7.0 in package.json`\n- Bad: `仓库在 package.json 中钉住 pnpm@11.7.0`\n- Good: `该仓库在 package.json 中固定使用 pnpm@11.7.0`\n\n### Run-on sentence → Natural phrasing with pause\n- Source: `Read docs/architecture.md before changing anything under packages/.`\n- Bad: `改动 packages/ 下的任何东西之前先读 docs/architecture.md。`\n- Good: `在修改 packages/ 目录下的任何内容之前，请先阅读 docs/architecture.md。`\n\n### Stiff passive voice → Active and natural\n- Source: `a green gate means the pair was confirmed consistent at these exact contents, not that the confirmation was sound.`\n- Bad: `门禁绿意味着这对文档曾在当前内容上被确认一致，不意味着这次确认本身是对的。`\n- Good: `门禁通过意味着这组文档在当前内容上的一致性得到了确认，不代表确认本身正确可靠。`\n\n### Invented word → Natural expression\n- Source: `A sidecar record of both blob hashes makes consistency checkable`\n- Bad: `旁挂记录两侧 blob hash，使一致性可检查`\n- Good: `伴随记录保存两侧 blob hash，使一致性可检查`\n\n### Em-dash → Colon/period\n- Source: `FIXME — an issue that should block a new release. A release should not ship with an open FIXME unless reviewers explicitly agree the change can be merged anyway.`\n- Bad: `FIXME——应当阻塞新版本发布的问题。除非评审者明确同意可以照常合入，发布不应带着未解决的 FIXME 出门。`\n- Good: `FIXME：应当阻塞新版本发布的问题。除非评审者明确同意该更改可以合并，否则发布版本不应包含未解决的 FIXME。`\n\n### Overly literal → Meaningful rendering\n- Source: `awkward phrasing is easier to hear without the source anchoring you`\n- Bad: `没有源文锚着，别扭的表述更容易被听出来`\n- Good: `不对照原文时，更容易察觉别扭的表达`\n\n### Terminology — do not translate what should be kept in English\n- Source: `typed service seams, and explicit extension points`\n- Bad: `类型化的服务 seam（扩展点）与显式扩展点`\n- Good: `类型化的服务 seam 与显式扩展点`\n\n### Slang/jargon → Professional phrasing\n- Source: `The committed agent workflow lives in .agents/skills/dsh-translate-docs`\n- Bad: `进仓的 agent 工作流见 .agents/skills/dsh-translate-docs`\n- Good: `仓库内置的 agent 工作流见 .agents/skills/dsh-translate-docs`\n\n### \"For humans\" — translate the intent, not the word\n- Source: `For humans, start with the development guide`\n- Bad: `对于人工读者，请先从开发指南开始`（\"人工读者\"生硬）\n- Good: `面向开发者：请先阅读开发指南`（\"开发者\"自然，且中文里冒号在此处更自然）\n\n### Code block comments — NEVER translate\n- Source code block contains: `# full-screen TUI coding agent (needs DEEPSEEK_API_KEY)`\n- Bad: `# 全屏 TUI coding agent（需要 DEEPSEEK_API_KEY）`\n- Good: `# full-screen TUI coding agent (needs DEEPSEEK_API_KEY)` (keep exactly as-is, byte-for-byte)\n\n### Language switcher — flip direction\n- Source file (English) has: `English | [中文](README.zh.md)`\n- Bad (copying source unchanged): `English | [中文](README.zh.md)`\n- Good (flipped for Chinese file): `[English](README.md) | 中文`\n\n---\n\nNow translate the following document:"
       },
       {
         "role": "user",
diff --git a/scripts/type-equiv.manifest.json b/scripts/type-equiv.manifest.json
index 61f1ce96db..d18bd54268 100644
--- a/scripts/type-equiv.manifest.json
+++ b/scripts/type-equiv.manifest.json
@@ -31,6 +31,11 @@
       "symbol": "FinishReasonMap",
       "source": "packages/llm/llm/src/types.ts"
     },
+    {
+      "doc": "docs/core-data-structures/core.md",
+      "symbol": "AdapterRegistrationHandle",
+      "source": "packages/llm/llm/src/index.ts"
+    },
     {
       "doc": "docs/core-data-structures/core.md",
       "symbol": "LlmProviderInfo",
@@ -81,6 +86,11 @@
       "symbol": "LlmCallConfig",
       "source": "packages/llm/llm/src/call-config.ts"
     },
+    {
+      "doc": "docs/core-data-structures/core.md",
+      "symbol": "LlmCallConfigAdapterDefaults",
+      "source": "packages/llm/llm/src/call-config.ts"
+    },
     {
       "doc": "docs/core-data-structures/core.md",
       "symbol": "SessionEvent",
@@ -1368,6 +1378,36 @@
       "doc": "docs/core-data-structures/settings.md",
       "symbol": "SettingsUpdateSource",
       "source": "packages/settings/settings/src/index.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/credentials.md",
+      "symbol": "CredentialRef",
+      "source": "packages/credentials/credentials/src/index.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/credentials.md",
+      "symbol": "ResolvedCredential",
+      "source": "packages/credentials/credentials/src/index.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/credentials.md",
+      "symbol": "CredentialInfo",
+      "source": "packages/credentials/credentials/src/index.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/settings.md",
+      "symbol": "SettingsDescribeOptions",
+      "source": "packages/settings/settings/src/index.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/core.md",
+      "symbol": "LlmConfigurableProvider",
+      "source": "packages/llm/llm/src/types.ts"
+    },
+    {
+      "doc": "docs/core-data-structures/settings.md",
+      "symbol": "SettingsPathOp",
+      "source": "packages/settings/settings/src/index.ts"
     }
   ]
 }
diff --git a/scripts/verify-package-readme-model-experience.ts b/scripts/verify-package-readme-model-experience.ts
index 615cc2832f..24debd782c 100644
--- a/scripts/verify-package-readme-model-experience.ts
+++ b/scripts/verify-package-readme-model-experience.ts
@@ -53,6 +53,7 @@ const SENTENCE_MODEL_EXPERIENCE: Readonly<Record<string, SentenceContract>> = {
   'packages/client/ui-slots': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
   'packages/client/ui-primitives': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
   'packages/client/web-react': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
+  'packages/client/schema-form': { kind: 'none', reason: 'Browser-side form-rendering library; registers no model surface.' },
   'packages/client/connection': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
   'packages/client/runtime': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
   'packages/client/ui-layout': { kind: 'none', reason: 'Browser-side UI plugin layer; registers no model surface.' },
@@ -104,6 +105,9 @@ const SENTENCE_MODEL_EXPERIENCE: Readonly<Record<string, SentenceContract>> = {
   'packages/session-query/session-query-sqlite': { kind: 'none', reason: 'The search backend returns hits only to callers and registers no model surface.' },
   'packages/settings/settings': { kind: 'indirect', reason: 'The seam stores and resolves user settings; consumer plugins own any model surface a value feeds.' },
   'packages/settings/settings-local': { kind: 'indirect', reason: 'The file provider stores and publishes namespace sections; consumers of ctx.settings own any model surface.' },
+  'packages/credentials/credentials': { kind: 'indirect', reason: 'The seam resolves credential references; the consuming adapter owns every model surface a value authorizes.' },
+  'packages/credentials/credentials-local': { kind: 'indirect', reason: 'The file/environment provider stores credential values; consumers of ctx.credentials own any model surface.' },
+  'packages/util/atomic-write': { kind: 'none', reason: 'Pure filesystem write primitive; registers no model surface.' },
   'packages/telemetry/session-telemetry': { kind: 'none', reason: 'The seam observes the session stream and hands redacted copies outward; it registers no model surface.' },
   'packages/telemetry/session-telemetry-otel': { kind: 'none', reason: 'The backend forwards seam records into the OTel SDK pipeline and registers no model surface.' },
   'packages/skill/skill': { kind: 'indirect', reason: 'The provider registry delegates model rendering to dsh-tool-skill.' },
diff --git a/skills/create-dsh-sdk-project/SKILL.md b/skills/create-dsh-sdk-project/SKILL.md
index d05cae182a..1fe1d7a7f1 100644
--- a/skills/create-dsh-sdk-project/SKILL.md
+++ b/skills/create-dsh-sdk-project/SKILL.md
@@ -27,7 +27,7 @@ block.
 {
   "directory": "my-agent",
   "description": "A DeepSeek Harness agent",
-  "provider": "deepseek",
+  "provider": "deepseek-official",
   "apiKey": "<key>",
   "model": "deepseek-v4-flash",
   "interface": "tui",
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 5a69af958d..f902aa21a5 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -95,6 +95,7 @@
         "./packages/session-title/*/src/invariant.ts",
         "./packages/session-query/*/src/invariant.ts",
         "./packages/settings/*/src/invariant.ts",
+        "./packages/credentials/*/src/invariant.ts",
         "./packages/telemetry/*/src/invariant.ts",
         "./packages/acp/*/src/invariant.ts",
         "./packages/storage/*/src/invariant.ts",
@@ -131,6 +132,8 @@
       "@deepseek-ai/dsh-host-webserver": ["./packages/host/webserver/src"],
       "@deepseek-ai/dsh-client-ui-slots": ["./packages/client/ui-slots/src"],
       "@deepseek-ai/dsh-client-ui-primitives": ["./packages/client/ui-primitives/src"],
+      "@deepseek-ai/dsh-client-schema-form": ["./packages/client/schema-form/src"],
+      "@deepseek-ai/dsh-client-schema-form/invariant": ["./packages/client/schema-form/src/invariant.ts"],
       "@deepseek-ai/dsh-client-web-react": ["./packages/client/web-react/src"],
       "@deepseek-ai/dsh-client-connection": ["./packages/client/connection/src"],
       "@deepseek-ai/dsh-client-hmr": ["./packages/client/hmr/src"],
@@ -189,6 +192,7 @@
         "./packages/session-query/*/src",
         "./packages/session-title/*/src",
         "./packages/settings/*/src",
+        "./packages/credentials/*/src",
         "./packages/telemetry/*/src",
         "./packages/acp/*/src",
         "./packages/storage/*/src",
diff --git a/tsconfig.client.json b/tsconfig.client.json
index aca5772ec0..62b2cb7999 100644
--- a/tsconfig.client.json
+++ b/tsconfig.client.json
@@ -38,6 +38,7 @@
     { "path": "./packages/host/directory-picker-native" },
     { "path": "./packages/host/directory-picker-browse" },
     { "path": "./packages/client/ui-slots" },
+    { "path": "./packages/client/schema-form" },
     { "path": "./packages/client/ui-primitives" },
     { "path": "./packages/client/web-react" },
     { "path": "./packages/client/modules" },
diff --git a/tsconfig.host.json b/tsconfig.host.json
index d5c6b9a03a..4d111917a0 100644
--- a/tsconfig.host.json
+++ b/tsconfig.host.json
@@ -20,6 +20,8 @@
     "apps/web/tests/lifecycle-chrome.e2e.ts",
     "apps/web/tests/details-session-lifecycle.e2e.ts",
     "apps/web/tests/settings-chrome.e2e.ts",
+    "apps/web/tests/models-settings.e2e.ts",
+    "apps/web/tests/onboarding-deepseek-config.e2e.ts",
     "apps/web/tests/workspace-management.e2e.ts",
     "apps/web/tests/replay-round-trip.e2e.ts",
     "apps/web/tests/seeded-history.e2e.ts",
@@ -61,6 +63,7 @@
     { "path": "./packages/util/paths" },
     { "path": "./packages/util/timeout" },
     { "path": "./packages/util/retention" },
+    { "path": "./packages/util/atomic-write" },
     { "path": "./packages/llm/llm" },
     { "path": "./packages/llm/token-meter" },
     { "path": "./packages/core/session" },
@@ -77,6 +80,8 @@
     { "path": "./packages/session-query/session-query-sqlite" },
     { "path": "./packages/settings/settings" },
     { "path": "./packages/settings/settings-local" },
+    { "path": "./packages/credentials/credentials" },
+    { "path": "./packages/credentials/credentials-local" },
     { "path": "./packages/session-query/tool-session-query" },
     { "path": "./packages/storage/storage" },
     { "path": "./packages/storage/storage-json" },
diff --git a/vendor/loader/package.json b/vendor/loader/package.json
index ad5f14f7cd..c7bbaf5176 100644
--- a/vendor/loader/package.json
+++ b/vendor/loader/package.json
@@ -24,7 +24,7 @@
   "license": "MIT",
   "peerDependencies": {
     "cordis": "^4.0.0-rc.7",
-    "node-addon-require-builtin": "^0.1.0"
+    "node-addon-require-builtin": "^0.1.3"
   },
   "peerDependenciesMeta": {
     "node-addon-require-builtin": {
diff --git a/website/docs.ts b/website/docs.ts
index cbc8d9e627..a640d01e18 100644
--- a/website/docs.ts
+++ b/website/docs.ts
@@ -257,6 +257,7 @@ const coreDataReference = pairedPages(([
   ['web.md', 'Web 访问', 'Web access', 19],
   ['persistence.md', '会话持久化', 'Session persistence', 20],
   ['settings.md', '用户设置', 'User settings', 21],
+  ['credentials.md', '用户凭据', 'User credentials', 22],
 ] as const).map(([file, rootLabel, enLabel, order]): PairedPage => ({
   source: `docs/core-data-structures/${file}`,
   route: `reference/core-data-structures/${file}`,