Merge remote-tracking branch 'origin/master' into feat/code-runtime-multilang-seam

# Conflicts:
#	docs/core-data-structures/code-runtime.i18n.yaml
#	packages/code-runtime/code-runtime/README.i18n.yaml

.agents/notes/implemented/architecture/2026-07-19-package-invariant-runtime-contracts.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/architecture/2026-07-19-package-invariant-runtime-contracts.md
-2026-07-19-package-invariant-runtime-contracts.md: 40d152b2320ac65f9ea7d8732b1a667236d2780a
-2026-07-19-package-invariant-runtime-contracts.zh.md: a734b1a3deb739c214d1c4c2565fc697b5e4b89b
+2026-07-19-package-invariant-runtime-contracts.md: 86d86f69b606c348e85d1ae654b6b35c4326985a
+2026-07-19-package-invariant-runtime-contracts.zh.md: 386a294b577561d08493a3b2925910ee5ba971b4

.agents/notes/implemented/architecture/2026-07-19-package-invariant-runtime-contracts.md

@@ -50,7 +50,7 @@ The current 103-package workspace has 21 executable companions and 82 justified
 | `dsh-user-approval` | Approval asked/decided records pair by call and use valid outcomes and policies. |
 | `dsh-workflow` | Workflow and child-agent start/end events preserve run metadata, identity, outcome, count, and error relations. |
 | `dsh-tasks` | Current and terminal task snapshots preserve id/kind, owner, status, and timestamp relationships. |
-| `dsh-tool-todo` | Durable whole-list snapshots use unique trimmed items, closed statuses, and at most one active item. |
+| `dsh-tool-todo` | Durable whole-list snapshots use unique trimmed items and closed statuses. |
 | `dsh-time-context` | Plugin-attributed clock readings agree with the session's open turn, next pre-step position, and elapsed baseline; rendered time parses and does not postdate its event. |
 
 Session-backed companions validate existing durable events when they load, using the prefix preceding each candidate where the relationship depends on event order. Other checks observe the authoritative live event boundary or mutable service result. Validation runs before publication where accepting an invalid event would otherwise commit bad state.

.agents/notes/implemented/architecture/2026-07-19-package-invariant-runtime-contracts.zh.md

@@ -50,7 +50,7 @@ Status: implemented
 | `dsh-user-approval` | approval asked/decided 记录按 call 配对，并使用有效 outcome 和 policy。 |
 | `dsh-workflow` | 工作流和 child-agent start/end 事件保持 run metadata、身份、outcome、数量和 error 关系。 |
 | `dsh-tasks` | 当前与终态 task 快照保持 id/kind、owner、status 和 timestamp 关系。 |
-| `dsh-tool-todo` | 持久化全量快照使用唯一且已 trim 的条目、封闭 status，并且最多有一个活动条目。 |
+| `dsh-tool-todo` | 持久化全量快照使用唯一且已 trim 的条目和封闭 status。 |
 | `dsh-time-context` | 标注插件来源的时钟 reading 必须匹配会话当前打开的轮次、下一个步骤开始前的位置和 elapsed baseline；渲染时间必须可解析，且不得晚于对应事件。 |
 
 基于会话的 companion 在加载时验证已有持久化事件；关系依赖事件顺序时，会使用每个候选事件之前的事件前缀。其他检查观测权威实时事件边界或可变服务结果。如果接受无效事件会提交错误状态，验证就在发布前执行。

.agents/notes/implemented/bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.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/bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md
-2026-08-02-message-fork-actions-require-completed-turn-tail.md: f2e7fd67b65a6ce4a86ba3f4405f78842be8f234
-2026-08-02-message-fork-actions-require-completed-turn-tail.zh.md: 2c3feeaa3ef01dbde67faa73257520918996f9c8
+2026-08-02-message-fork-actions-require-completed-turn-tail.md: abdcbc79948c67619bb70a8a87741046f65b8838
+2026-08-02-message-fork-actions-require-completed-turn-tail.zh.md: a93b572c6db3c76ce3869747fd9a7660bf3ea395

.agents/notes/implemented/bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md

@@ -12,6 +12,8 @@ The Web conversation attached branch to the last assistant node with nonempty te
 
 `ConversationSnapshot.turnEnds` retains the completed turn boundaries present in the raw event window. The conversation view walks transcript nodes through each boundary and enables branch only when the boundary's last node is a user message, a durable steering message, or a content-bearing assistant message. Open turns have no eligible message, and a later tool result, reasoning-only interruption, turn error, or other transcript node leaves branch unavailable on earlier messages. The unavailable control stays visible, focusable, and hoverable; `aria-disabled`, a tooltip, and `aria-describedby` explain the completed-tail requirement without sending a Host request. Copy and clock remain available under their existing message chrome, and the Host's completed-turn fork semantics remain unchanged.
 
+The message-bubble half of this eligibility is superseded by the [user-bubble branch removal](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md): user and steering bubbles no longer render the control at all, so only content-assistant tails may fork; the assistant-side gate and its visible-but-unavailable presentation stand.
+
 This narrows the message eligibility established by the earlier [Web session fork action decision](../feature/2026-07-27-web-session-fork-actions.md). Session-row forking still selects the latest completed turn, and eligible message actions still pass their event seq through the shared client runtime operation.
 
 ## Alternatives considered

.agents/notes/implemented/bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.zh.md

@@ -12,6 +12,8 @@ Web 会话把分支操作挂到每个轮次中最后一个文本非空的 assist
 
 `ConversationSnapshot.turnEnds` 保留原始事件窗口中的已完成轮次边界。会话视图按各边界遍历 transcript（文本记录）节点，仅当边界的最后一个节点是用户消息、持久 steering（中途引导）消息或含内容的 assistant 消息时才启用分支操作。开放轮次没有符合条件的消息；如果后面还有工具结果、只有推理内容的中断、轮次错误或其他 transcript 节点，较早消息上的分支操作会保持不可用。不可用的控件仍然可见、可聚焦、可悬停；`aria-disabled`、tooltip 与 `aria-describedby` 会说明已完成尾部这一要求，且不会发送 Host 请求。复制和时钟仍可在既有消息 chrome 下使用，Host 按已完成轮次 fork 的语义保持不变。
 
+本资格判定中消息气泡的那一半已被 [user 气泡分支移除决策](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md)取代：user 与 steering 气泡不再渲染该控件，因此只有内容 assistant 尾部可以 fork；assistant 侧门禁及其可见但不可用的呈现保持有效。
+
 本决策收紧了较早的 [Web 会话 fork 操作决策](../feature/2026-07-27-web-session-fork-actions.md)所定义的消息资格。Session 行 fork 仍选择最新的已完成轮次；符合条件的消息操作仍通过共享 client 运行时操作传递其事件 seq。
 
 ## 考虑过的替代方案

.agents/notes/implemented/bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.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/bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md
+2026-08-05-turn-tail-actions-require-a-completed-turn.md: 689d50bb86c830d6e428239f112568f00d74c9b8
+2026-08-05-turn-tail-actions-require-a-completed-turn.zh.md: 2cc426bbb82acb8f57d491b0f068e89771699357

.agents/notes/implemented/bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md

@@ -0,0 +1,31 @@
+# Agent Note: Turn-tail IconActions require a completed turn
+
+Status: implemented
+
+English | [中文](2026-08-05-turn-tail-actions-require-a-completed-turn.zh.md)
+
+## Problem
+
+Assistant IconActions were derived from the finalized transcript alone: the last content-text assistant of each turn owned the row. That quantity is stable only after the turn closes. While a turn is still producing steps, the narration a model writes before a tool call *is* the last content assistant so far, so it took the row for as long as the tool ran and then lost it to the next step's text. Readers saw copy, branch, and a clock appear under an intermediate sentence, shift the flow by one 28px row, and disappear. The row was also incoherent in that state: its branch control was already disabled through `turnEnds`, and its `Ran for` label was already withheld through `turnTimings`, so only copy worked.
+
+The [message chrome decision](../feature/2026-07-29-web-message-icon-actions-and-clock.md) always claimed mid-turn narration stays chrome-free; the derivation never carried a completion signal to make that true.
+
+## Decision
+
+`assistantActionsSeqs` takes `ConversationSnapshot.turnEnds` and grants the row only within a turn that has a `turn/end` in the window. Ownership inside a completed turn is unchanged: its last content-text assistant. A turn still producing steps grants nothing, so its narration never mounts the row, and the seat appears once, under the settled answer, when the turn closes.
+
+This is the same completion fact the branch control and the run-time label already use, so the three parts of one row now agree. Turn completion is read from the durable `turn/end` event rather than inferred from `running`, the streaming partial, or in-flight tool calls, matching the [completed-turn-tail decision](2026-08-02-message-fork-actions-require-completed-turn-tail.md). Every reason kind closes a turn, so an aborted turn's frozen tail keeps its footer, and a crash-orphaned turn receives its `turn/end` from log repair on load.
+
+`hasContentText` moves to `chat-flow.ts` and `AssistantMarkdown` imports it, so the ownership gate and the mount gate cannot drift apart.
+
+## Alternatives considered
+
+**Withhold by naming the open turn from `running` plus the streaming partial or the first in-flight tool call.** This shipped briefly in the original change and was then dropped. It infers completion instead of reading it, needs a special case so a turn accepted before its first step does not strip the previous answer's seat, and is the inference the completed-turn-tail decision rejected for the branch control. `turnEnds` answers the same question per turn with no inference and no special case.
+
+**Leave the row mounted mid-turn and disable its controls.** Rejected: mid-turn narration is not a degraded answer, it is not the answer. Copy would still write an intermediate sentence, and the row would still move to the real tail at turn end.
+
+**Keep the row under every finalized content node permanently.** Rejected again here for the reason the original decision gave: repeating copy, branch, and a clock under every step clutters the flow. It also does not solve the reported problem, since the branch control is only meaningful on the tail.
+
+## Consequences
+
+A running turn carries no message footer below the user bubble that triggered it, while every earlier completed turn keeps its own; the seat appears once when `turn/end` lands, which adds one 28px row under the settled answer at that moment. A turn whose `turn/end` is outside the loaded window grants nothing, which cannot arise from paging because a turn's end follows its own nodes. `apps/web/tests/turn-tail-actions.e2e.ts` pins both states through the assembled application: a `hang` sidecar on the second model call parks a turn whose first step narrated before calling bash, and the two goldens hold the parked flow and the flow after stopping. Package tests cover the derivation directly and the running-turn render.

.agents/notes/implemented/bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.zh.md

@@ -0,0 +1,31 @@
+# Agent Note: 轮次尾部 IconActions 要求轮次已完成
+
+Status: implemented
+
+[English](2026-08-05-turn-tail-actions-require-a-completed-turn.md) | 中文
+
+## 问题
+
+assistant IconActions 此前只从已定稿的 transcript（文本记录）推导：每个轮次中最后一条含内容文本的 assistant 拥有该行。这个量只有在轮次关闭后才稳定。轮次仍在产出步骤时，模型在工具调用前写下的叙述就是当时该轮次的最后一条内容 assistant，于是它在工具执行期间取得该行，等下一步的文本落定又把它交出去。读者会看到复制、分支和时钟出现在一句中间叙述下方，把流程推开一行 28px，然后消失。该行在这个状态下本身也是残缺的：分支控件已经通过 `turnEnds` 判定为禁用，`Ran for` 标签已经通过 `turnTimings` 判定为不显示，只有复制可用。
+
+[消息 chrome 决策](../feature/2026-07-29-web-message-icon-actions-and-clock.md)一直声称轮次中间的叙述不带 chrome，但推导过程从未拿到能让这句话成立的完成信号。
+
+## 决策
+
+`assistantActionsSeqs` 接收 `ConversationSnapshot.turnEnds`，只在事件窗口中存在该轮次 `turn/end` 时才授予该行。已完成轮次内部的归属不变，仍是其最后一条含内容文本的 assistant。仍在产出步骤的轮次不授予任何座位，因此其叙述不会挂载该行；轮次关闭时，座位在已定稿答案下方一次性出现。
+
+这与分支控件和运行时长标签使用的完成事实相同，因此同一行的三个部分现在口径一致。轮次是否完成读自持久的 `turn/end` 事件，而不是从 `running`、流式 partial 或在途工具调用推断，与[已完成轮次尾部决策](2026-08-02-message-fork-actions-require-completed-turn-tail.md)一致。任何 reason 类别都会关闭轮次，因此已中止轮次冻结的尾部保留其操作栏，而崩溃遗留的开放轮次会在加载时由日志修复补上 `turn/end`。
+
+`hasContentText` 移入 `chat-flow.ts`，由 `AssistantMarkdown` 导入，使归属门控与挂载门控无法各自漂移。
+
+## 考虑过的替代方案
+
+**用 `running` 加流式 partial 或第一个在途工具调用指认开放轮次，据此扣留。** 这一做法曾在最初的变更中短暂存在，随后被删除。它推断完成状态而不是读取完成状态，还需要一个特例，避免轮次已被接受但尚未产出第一步时把上一条回答的座位取走；这正是已完成轮次尾部决策为分支控件否决过的推断。`turnEnds` 按轮次回答同一个问题，不需要推断，也不需要特例。
+
+**轮次进行中保留该行，只把控件置为不可用。** 不予采纳：轮次中间的叙述不是一个降级的答案，它根本不是答案。复制仍然会写入一句中间文本，该行在轮次结束时仍然要移动到真正的尾部。
+
+**让每个已定稿的内容节点长期保留该行。** 在此重新否决，理由与最初的决策相同：在每一步下重复复制、分支和时钟会打乱流程。它也解决不了本次报告的问题，因为分支控件只有落在尾部才有意义。
+
+## 后果
+
+运行中的轮次在触发它的用户气泡之下不再有任何消息操作栏，而此前每个已完成轮次仍保留各自的座位；座位在 `turn/end` 到达时一次性出现，此刻已定稿答案下方会多出一行 28px。`turn/end` 落在加载窗口之外的轮次不授予座位，而翻页不会造成这种情况，因为一个轮次的结束事件排在它自己的节点之后。`apps/web/tests/turn-tail-actions.e2e.ts` 通过组装后的应用钉住两种状态：`hang` sidecar 作用在第二次模型调用上，把一个首步先叙述再调用 bash 的轮次挂住，两份 golden 分别记录挂起中的流程和停止之后的流程。包级测试直接覆盖该推导以及运行中轮次的渲染结果。

.agents/notes/implemented/feature/2026-06-15-code-mode.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/2026-06-15-code-mode.md
-2026-06-15-code-mode.md: b6a24ecd9700e32912b8112b59cbd8b6ab131eb5
-2026-06-15-code-mode.zh.md: a00a43ece1e581190de6096be8138df25a23f07f
+2026-06-15-code-mode.md: 99bbed3edab32512f88ece9694d6519a1f89c2dd
+2026-06-15-code-mode.zh.md: ca1bbe9ed3e412186763d1ed4fca9ed06669d4c3

.agents/notes/implemented/feature/2026-06-15-code-mode.md

@@ -6,7 +6,7 @@ English | [中文](2026-06-15-code-mode.zh.md)
 
 ## Problem
 
-In the registry's native presentation, the agent loop advertises every visible capability as a JSON-schema function definition. `ToolRegistry` contributes its schemas to the system-prompt assembly, the assembly's `tools` land on the wire (and in the logged request header), the model invokes one `tool-call` block per step, and the loop dispatches each call through `ctx.tools.execute()` **sequentially** (parallel tool execution is an explicit open TODO in `dsh-tools` and [docs/architecture.md](../../../../docs/architecture.md)), with **every** intermediate `tool-result` re-entering the model's context on the next request.
+In the registry's native presentation, the agent loop advertises every visible capability as a JSON-schema function definition. `ToolRegistry` contributes its schemas to the system-prompt assembly, the assembly's `tools` land on the wire (and in the logged request header), the model invokes one `tool-call` block per step, and at the time of this note the loop dispatched each call through `ctx.tools.execute()` **sequentially** (parallel tool execution was an open TODO then; bounded parallel dispatch has since shipped — the [parallel tool-call note](2026-07-10-parallel-tool-call-execution.md), the rolling pool in [docs/architecture.md](../../../../docs/architecture.md)) — with **every** intermediate `tool-result` re-entering the model's context on the next request.
 
 For multi-step tool work this is token-heavy and serial. The model cannot compose tools — loop over a result set, branch on an intermediate value, fan out, post-process — without a full model round-trip per call, and each round-trip drags the entire intermediate result back into context whether the model needs it or not.
 
@@ -32,7 +32,7 @@ This note owns Code Mode's presentation, composition, isolation, and settlement
 
 **Interaction with `toolOrder`, stated up front:** a configured `systemPrompt.toolOrder` naming native capabilities rejects every assembly under `mode: 'code'`, because those names are outside that mode's wire-validation universe. This is correct behavior, not a bug: a deployment using Code Mode updates its order config or drops it.
 
-**SDK prompt section.** In `'code'` and `'both'`, the lazy `tools:sdk` section in the tool-guidance order band renders TypeScript declarations plus fixed usage instructions for the scope's visible capabilities. It shares lookup and execution visibility, excludes `run_code`, and sorts tools lexicographically for byte-stable output.
+**SDK prompt section.** In `'code'` and `'both'`, the lazy `tools:sdk` section in the tool-guidance order band renders the loaded runtime's language declarations plus fixed usage instructions for the scope's visible capabilities (TypeScript by default; the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md) added Python and the `ctx.codeRuntime.language` renderer table). It shares lookup and execution visibility, excludes `run_code`, and sorts tools lexicographically for byte-stable output.
 
 **Assembly ownership.** `run_code` and `tools:sdk` enter the trusted `system-prompt/assemble` waterfall as normal assembly inputs. A scoped `tools:sdk` section may shadow the global default before dispatch, and a listener may remove or replace either contribution. The waterfall's returned assembly is final, so whoever changes these inputs owns preserving a viable Code Mode protocol when the deployment expects Code Mode to remain usable; no restoration pass overrides deliberate composition.
 
@@ -48,7 +48,7 @@ Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentat
 
 **Sub-call contexts are deferred through the parent.** Injecting inside `run_code` would break parent call/result adjacency, so `ToolRunContext.deferContext()` collects every sub-result `additionalContexts` entry in dispatch order. The registry carries that array even when the program later throws, and the loop appends each entry only after the outer result and every sibling result in the step. An outer post-execute block discards tool-deferred entries and exposes only contexts explicitly attached by the blocking decision.
 
-**Concurrency is serialized.** Each run owns a dispatch queue, so even `Promise.all` executes tool calls in submission order. Settlement abandons queued calls that have not started. Parallelism requires per-tool concurrency-safety metadata.
+**Concurrency is bounded, not serialized.** Each run owns a dispatch queue that starts calls strictly in submission order and classifies each one through `registry.executionMode`, the same fail-closed `isConcurrencySafe` contract the native loop uses. Consecutive parallel-classified calls overlap up to `maxParallelSubCalls` (default 10; `1` restores serial dispatch); an exclusive call drains the pool and runs alone. Settlement abandons queued calls that have not started. This note shipped the serialized placeholder; the [live-parallel Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) owns the scheduler that replaced it.
 
 **Presentation.** `run_code`'s render intent is decided here per the [render-intent Agent Note](../architecture/2026-07-02-tool-render-intent-union.md): `presentCall` creates a `generic` card with `kind: 'execute'`, the program text as its title, and the same program text as `rawInput`; `run_code` intentionally declares no `presentResult`, so the TUI and host/client runtime (Web) complete that card through their generic raw-content fallback using the final durable `tool/result.content`, including captured logs plus the returned value, failure, or post-policy spill preview. This is not a `terminal` card: that card's semantics are "a shell command in a working directory", which a program is not. See the [result-card completeness note](../../archived/bug-fix/2026-07-20-code-mode-result-card-completeness.md).
 
@@ -64,7 +64,7 @@ Each sub-dispatch appends a log-only `tool/code-dispatch-start` event at pool en
 - `CodeBindingNamespace = { global: string; functions: Record<string, (args: unknown) => Promise<CodeJsonValue>>; errorClass?: { name: string; memberNameProperty: string } }` — the runtime exposes each namespace as a global object of async functions inside the program; the optional descriptor asks the runtime to inject a real program-visible rejection class without teaching the seam consumer-specific names. `CodeJsonValue` is this dependency-light seam's structural lossless-JSON type, so binding arguments and resolutions cross the implementation's serialization boundary whole.
 - `CodeRunResult = { value?: CodeJsonValue; logs: string[]; error?: CodeRunFailure }` — program execution outcomes resolve as the `error` field. `run()` may reject only for caller/seam misuse (for example a duplicate binding namespace); consumers still contain a non-conforming backend rejection at their own error boundary.
 - `CodeRunFailure = { kind: 'exception' | 'timeout' | 'abort' | 'worker-exit' | 'invalid-output' | 'output-limit'; message: string }` — orthogonal outcomes reported independently per [defensive patterns](../../../../docs/defensive-patterns.md); a timed-out run is not an exception, an abort is not a timeout, a lossy completion is not an overflow, and a substrate exit is none of them.
-- Two readonly backend descriptors, informational not gating: `language` (what the program must be written in — `'typescript'` for the shipped backend; a Python backend would say so, and pair with its own SDK generator on the presentation side) and `isolation` (`'worker-thread'` for the shipped backend; `'process'`, `'container'`, … for future ones). `dsh-tools` requires `language === 'typescript'` in the MVP — its codegen emits TS — and fails the assembly loudly otherwise, the same misconfiguration idiom as `toolOrder` violations (as when `mode` is non-native with no `ctx.codeRuntime` loaded at all).
+- Two readonly backend descriptors, informational not gating: `language` (what the program must be written in — `'typescript'` for the first backend; a Python backend says `'python'` and pairs with its own SDK generator on the presentation side) and `isolation` (`'worker-thread'` for the shipped backend; `'process'`, `'container'`, … for future ones). `dsh-tools` accepts any `language` with a registered SDK renderer and `run_code` flavor (TypeScript and Python ship; see the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md)) and fails the assembly loudly otherwise, the same misconfiguration idiom as `toolOrder` violations (as when `mode` is non-native with no `ctx.codeRuntime` loaded at all).
 
 Requests contain every runtime input; implementations own validated timeout and cap defaults. The registry looks up the optional runtime only when Code Mode is assembled, so native mode does not depend on one. Missing or language-incompatible runtimes fail loudly. Alternate substrates or languages can replace the implementation behind the same seam, paired with the appropriate SDK generator.
 
@@ -85,11 +85,11 @@ The worker runtime provides containment, not a security boundary: model code can
 
 ### What the model sees
 
-The SDK instructs the model to write an async erasable-TypeScript body, call tools through `await tools.name(args)`, catch rejected tool calls when needed, and return or log only the output that should re-enter context. Calls remain sequential even under `Promise.all`. The declaration prefix can be as large as native schemas, especially in `'both'`, but remains stable for provider caching.
+The SDK instructs the model to write an async body in the loaded runtime's language (an erasable-TypeScript body by default; a Python `async` body under a Python runtime — see the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md)), call tools through `await tools.name(args)`, catch rejected tool calls when needed, and return or log only the output that should re-enter context. Both flavors state the same contract in their own primitive: independent read-only calls MAY overlap under `Promise.all` (TypeScript) or `asyncio.gather` (Python), mutating calls run alone in submission order, and dependent work sequences with `await`. The declaration prefix can be as large as native schemas, especially in `'both'`, but remains stable for provider caching.
 
 ## Consequences
 
-Deployments switching to `'code'` must update any native-only `toolOrder`. Assembly listeners own the integrity of any rewritten protocol surface. Sub-dispatch remains serialized, while per-call contexts retain their source, envelope, and metadata through the outer result.
+Deployments switching to `'code'` must update any native-only `toolOrder`. Assembly listeners own the integrity of any rewritten protocol surface. Sub-dispatch starts in submission order under a bounded overlap pool, while per-call contexts retain their source, envelope, and metadata through the outer result.
 
 ## Testing
 
@@ -106,7 +106,7 @@ Deployments switching to `'code'` must update any native-only `toolOrder`. Assem
 
 **Result elision / summarization over native tool-calling.** Addresses only the context-bloat half of the problem: trimming old `tool-result`s is cheap to add as a logged surface replacement under reconstructable requests, but still pays one model round-trip per call and cannot express loops, branches, or joins. Complementary, not competing; it can layer under Code Mode for residual native calls.
 
-**Parallel native dispatch in the loop.** The other answer to round-trip cost; still valid future work (the open TODO), still blocked on concurrency-safety metadata, and still no composition — it parallelizes calls the model already decided on in one step. Code Mode's serialized-queue decision keeps the two compatible: when the metadata lands, both native parallel dispatch and per-tool binding parallelism unlock together.
+**Parallel native dispatch in the loop.** The other answer to round-trip cost at decision time; it was blocked on concurrency-safety metadata and offers no composition either way — it parallelizes calls the model already decided on in one step. Code Mode's queue decision kept the two compatible, and that is how it played out: the metadata landed as `isConcurrencySafe` (the [parallel tool-call note](2026-07-10-parallel-tool-call-execution.md)), and native rolling-pool dispatch and per-tool binding parallelism unlocked on the same classifier.
 
 **Always-exclusive (Cloudflare-faithful, no mode).** Rejected for this SDK's primary consumer: a coding agent's bread-and-butter single calls (`bash`, `read`, `edit`) are already ideal as native calls, and forcing every edit through a program taxes the common case. The mode config keeps the faithful form (`'code'`) one line away without imposing it.
 
@@ -128,6 +128,6 @@ Deployments switching to `'code'` must update any native-only `toolOrder`. Assem
 
 **Large lossless JSON values can exhaust memory.** Tool bindings snapshot lossless JSON before dispatch and return canonical JSON resolutions whole. The runtime validates both sides of the worker port and applies no per-binding byte cap; structured-clone cost and process or worker memory are the practical bounds. The combined outer-output ledger for logs, the completion value, and a failure diagnostic is the only byte-capped boundary.
 
-**Serialized-only sub-dispatch.** `Promise.all` gains no wall-clock parallelism yet, only fewer round-trips; models may over-expect. The instructions state it; lifting it is tied to the same concurrency-safety metadata the native parallel-dispatch TODO needs.
+**Sub-dispatch overlap is bounded by tool safety claims, not by the caller.** A program's `Promise.all` or `asyncio.gather` buys wall-clock parallelism only across calls the tool itself classifies concurrency-safe; a run of exclusive calls still costs its round-trips in sequence, and models may over-expect. Both flavors' SDK instructions state the real contract. This note shipped the serialized placeholder that made the risk absolute; the [live-parallel Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) owns the scheduler and its overlap cap.
 
 **Budget metering reads the event loop, not a flag.** Busy-time polling (`eventLoopUtilization()`) is coarser than an exact CPU meter — a budget expires up to one poll interval late — and its correctness claim ("a pending dispatch cannot pause it") is load-bearing against a hostile program. Both sides are unit-tested (hot loop with a pending decoy dispatch dies at `computeMs`; idle-on-slow-binding survives to `maxWallMs`), and the poll interval is an internal constant, not config — nothing a deployment could mis-tune into a bypass. `maxWallMs` is config, and it reaches `setTimeout`, which clamps a delay above `MAX_TIMER_DELAY_MS` (2^31-1 ms) to 1 ms; a positivity check alone therefore accepts a 25-day ceiling that expires on the first tick and times out every run. The worker runtime range-checks the field at load for that reason. `computeMs` needs no upper bound because it is compared against measured utilization instead of being handed to a timer.

.agents/notes/implemented/feature/2026-06-15-code-mode.zh.md

@@ -6,7 +6,7 @@ Status: implemented
 
 ## 问题
 
-在注册表的原生呈现方式下，agent loop（智能体循环）将每个可见能力以 JSON Schema 函数定义的形式通告给模型。`ToolRegistry` 将其 schema 贡献给系统提示词组装，组装结果中的 `tools` 落到协议格式（wire format）上（也记录在请求头日志中），模型每步调用一个 `tool-call` 块，循环通过 `ctx.tools.execute()` **逐个**分发每次调用（并行工具执行是 `dsh-tools` 和 [docs/architecture.md](../../../../docs/architecture.md) 中明确标注的 open TODO），且**每一个**中间 `tool-result` 都会在下一次请求时重新进入模型上下文。
+在注册表的原生呈现方式下，agent loop（智能体循环）将每个可见能力以 JSON Schema 函数定义的形式通告给模型。`ToolRegistry` 将其 schema 贡献给系统提示词组装，组装结果中的 `tools` 落到协议格式（wire format）上（也记录在请求头日志中），模型每步调用一个 `tool-call` 块，而在本 note 写作时，循环通过 `ctx.tools.execute()` **逐个**分发每次调用（并行工具执行当时还是 open TODO；此后有界的并行分发已经交付——见[并行工具调用 note](2026-07-10-parallel-tool-call-execution.md)，以及 [docs/architecture.md](../../../../docs/architecture.md) 中的 rolling pool）——且**每一个**中间 `tool-result` 都会在下一次请求时重新进入模型上下文。
 
 对于多步工具操作，这种方式 token 开销大且串行。模型无法组合工具——遍历结果集、根据中间值分支、扇出、后处理——每次调用都需要一次完整的模型往返，而每次往返都会把完整的中间结果拖回上下文，不管模型是否需要。
 
@@ -32,7 +32,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一
 
 **与 `toolOrder` 的交互，预先说明：** 如果配置的 `systemPrompt.toolOrder` 引用了原生能力名称，在 `mode: 'code'` 下会拒绝所有组装，因为那些名称不在该模式的协议校验范围内。这是正确行为而非 bug：使用 Code Mode 的部署需要更新其 order 配置或移除它。
 
-**SDK 提示词段。** 在 `'code'` 和 `'both'` 下，tool-guidance order band 中的惰性 `tools:sdk` 段为当前 scope 的可见能力渲染 TypeScript 声明加固定的使用说明。它共享查找和执行可见性，排除 `run_code`，并按字典序排列工具以获得字节稳定的输出。
+**SDK 提示词段。** 在 `'code'` 和 `'both'` 下，tool-guidance order band 中的惰性 `tools:sdk` 段为当前 scope 的可见能力渲染所加载运行时语言的声明加固定的使用说明（默认 TypeScript；[语言分发 note](2026-07-31-code-mode-language-dispatch.md) 加入了 Python 与按 `ctx.codeRuntime.language` 选择的渲染器表）。它共享查找和执行可见性，排除 `run_code`，并按字典序排列工具以获得字节稳定的输出。
 
 **组装所有权。** `run_code` 和 `tools:sdk` 作为正常的组装输入进入受信任的 `system-prompt/assemble` waterfall。一个 scoped 的 `tools:sdk` 段可以在分发前遮蔽全局默认值，监听器也可以移除或替换任一贡献。waterfall 返回的组装结果是最终的，因此修改这些输入的人有责任在部署期望 Code Mode 可用时保持协议面的完整性；没有恢复 pass 会覆盖有意的组合。
 
@@ -48,7 +48,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一
 
 **子调用上下文通过父调用延后。** 在 `run_code` 内部注入会破坏父调用/结果的相邻性，因此 `ToolRunContext.deferContext()` 按分发顺序收集每个子结果的 `additionalContexts` 条目。即使程序后来抛出异常，注册表仍携带该数组；循环只在外层结果与步骤中所有兄弟结果之后追加每个条目。外层 post-execute 阻止会丢弃工具延后的条目，只暴露阻止 decision 显式附加的上下文。
 
-**并发被序列化。** 每次 run 拥有一个分发队列，因此即使 `Promise.all` 也按提交顺序执行工具调用。结算时放弃尚未开始的排队调用。并行化需要每个工具的并发安全元数据。
+**并发是有界的，而非被序列化。** 每次 run 拥有一个分发队列，严格按提交顺序启动调用，并通过 `registry.executionMode` 对每个调用分类——与原生循环所用的 fail-closed `isConcurrencySafe` 契约相同。连续的 parallel 类调用最多重叠 `maxParallelSubCalls` 个（默认 10；设为 `1` 恢复串行分发）；exclusive 类调用会排空池并单独运行。结算时放弃尚未开始的排队调用。本 note 交付的是被序列化的占位实现；取代它的调度器由[实时并行 Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) 负责。
 
 **呈现。** `run_code` 的 render intent 按[呈现意图 Agent Note](../architecture/2026-07-02-tool-render-intent-union.md)在此决定：`presentCall` 创建一个 `generic` 卡片，`kind: 'execute'`，以程序文本作为标题，并将同一程序文本作为 `rawInput`；`run_code` 有意不声明 `presentResult`，因此 TUI 和宿主/客户端运行时（Web）会通过通用原始内容回退机制，使用最终持久化的 `tool/result.content` 补全该卡片，其中包括捕获的日志，以及返回值、失败信息或 post-policy 输出落盘预览。这不是 `terminal` 卡片：该卡片的语义是「工作目录中的 shell 命令」，程序不是。参见[结果卡片完整性说明](../../archived/bug-fix/2026-07-20-code-mode-result-card-completeness.md)。
 
@@ -64,7 +64,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一
 - `CodeBindingNamespace = { global: string; functions: Record<string, (args: unknown) => Promise<CodeJsonValue>>; errorClass?: { name: string; memberNameProperty: string } }`——运行时将每个命名空间作为程序内部的全局异步函数对象暴露；可选描述符要求运行时注入真正的、程序可见的 reject 类，而无需让 seam 获知消费方专用名称。`CodeJsonValue` 是这个低依赖 seam 的结构化无损 JSON 类型，因此绑定参数与返回值可以完整跨越实现的序列化边界。
 - `CodeRunResult = { value?: CodeJsonValue; logs: string[]; error?: CodeRunFailure }`——程序执行失败时，执行 promise 仍会 fulfill，并通过 `error` 字段返回失败结果。只有调用方/seam 误用（例如重复的绑定命名空间）时，`run()` 才会 reject；消费方仍在自己的错误边界处理不合规后端的拒绝。
 - `CodeRunFailure = { kind: 'exception' | 'timeout' | 'abort' | 'worker-exit' | 'invalid-output' | 'output-limit'; message: string }`——按[防御性模式](../../../../docs/defensive-patterns.md)独立报告的正交结果；超时的 run 不是异常，abort 不是超时，有损完成值不是溢出，基底退出也与上述情况相互独立。
-- 两个只读的后端描述符，仅供信息参考而非门禁判定：`language`（程序必须使用的语言——交付的后端为 `'typescript'`；Python 后端会声明自己，并在呈现侧配对自己的 SDK 生成器）和 `isolation`（交付的后端为 `'worker-thread'`；未来可为 `'process'`、`'container'` 等）。`dsh-tools` 在 MVP 中要求 `language === 'typescript'`——其代码生成输出 TS——否则组装会大声失败，与 `toolOrder` 违规时的配置错误惯用法相同（如 `mode` 为非 native 但根本没有加载 `ctx.codeRuntime`）。
+- 两个只读的后端描述符，仅供信息参考而非门禁判定：`language`（程序必须使用的语言——首个后端为 `'typescript'`；Python 后端声明 `'python'`，并在呈现侧配对自己的 SDK 生成器）和 `isolation`（交付的后端为 `'worker-thread'`；未来可为 `'process'`、`'container'` 等）。`dsh-tools` 接受任何注册了 SDK 渲染器与 `run_code` flavor 的 `language`（TypeScript 与 Python 已交付；见[语言分发 note](2026-07-31-code-mode-language-dispatch.md)），否则组装会大声失败，与 `toolOrder` 违规时的配置错误惯用法相同（如 `mode` 为非 native 但根本没有加载 `ctx.codeRuntime`）。
 
 请求包含所有运行时输入；实现方拥有经校验的超时和上限默认值。注册表仅在组装 Code Mode 时查找可选的运行时，因此 native 模式不依赖它。缺失或语言不兼容的运行时会大声失败。替代基底或语言可以在同一 seam 背后替换实现，配对相应的 SDK 生成器。
 
@@ -85,11 +85,11 @@ worker 运行时只能约束程序的运行，而不构成安全边界：模型
 
 ### 模型看到的内容
 
-SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `await tools.name(args)` 调用工具，在需要时捕获被拒绝的工具调用，并仅 return 或 log 应重新进入上下文的输出。即使在 `Promise.all` 下调用仍保持顺序。声明前缀可能与原生 schema 一样大，尤其在 `'both'` 下，但对提供方缓存保持稳定。
+SDK 指示模型编写一个所加载运行时语言的异步函数体（默认可擦除 TypeScript；Python 运行时下为 Python `async` 函数体——见[语言分发 note](2026-07-31-code-mode-language-dispatch.md)），通过 `await tools.name(args)` 调用工具，在需要时捕获被拒绝的工具调用，并仅 return 或 log 应重新进入上下文的输出。两种 flavor 用各自的原语陈述同一契约：相互独立的只读调用可以在 `Promise.all`（TypeScript）或 `asyncio.gather`（Python）下重叠，有副作用的调用按提交顺序单独运行，有依赖的工作用 `await` 排序。声明前缀可能与原生 schema 一样大，尤其在 `'both'` 下，但对提供方缓存保持稳定。
 
 ## 后果
 
-切换到 `'code'` 的部署必须更新任何仅限 native 的 `toolOrder`。组装监听器有责任维护任何被重写的协议面的完整性。子分发保持序列化，而每次调用的上下文会通过外层结果保留其 source、信封与元数据。
+切换到 `'code'` 的部署必须更新任何仅限 native 的 `toolOrder`。组装监听器有责任维护任何被重写的协议面的完整性。子分发在有界的重叠池下按提交顺序启动，而每次调用的上下文会通过外层结果保留其 source、信封与元数据。
 
 ## 测试
 
@@ -106,7 +106,7 @@ SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `aw
 
 **在原生工具调用上做结果省略/摘要。** 仅解决问题中上下文膨胀这一半：裁剪旧 `tool-result` 作为可重建请求下的日志化表面替换成本低，但仍需每次调用一次模型往返，且无法表达循环、分支或汇合。互补而非竞争；它可以在 Code Mode 下为残余的原生调用分层。
 
-**循环中的并行原生分发。** 往返成本的另一个答案；仍是有效的未来工作（open TODO），仍被并发安全元数据阻塞，且仍无组合能力——它并行化的是模型在一步中已经决定的调用。Code Mode 的序列化队列决策保持两者兼容：当元数据就绪时，原生并行分发和每工具绑定并行化一起解锁。
+**循环中的并行原生分发。** 决策当时对往返成本的另一个答案；它被并发安全元数据阻塞，且无论如何都不提供组合能力——它并行化的是模型在一步中已经决定的调用。Code Mode 的队列决策保持了两者兼容，后续也正是这样落地的：元数据以 `isConcurrencySafe` 的形式就绪（见[并行工具调用 note](2026-07-10-parallel-tool-call-execution.md)），原生 rolling-pool 分发与每工具绑定并行化基于同一个分类器一起解锁。
 
 **始终排他（忠于 Cloudflare，无模式）。** 否决，因为本 SDK 的主要消费方是编码 agent：其日常的单次调用（`bash`、`read`、`edit`）作为原生调用已经是最优的，强制每次编辑都通过程序会给常见场景增加负担。mode 配置让忠实形式（`'code'`）只需一行配置即可启用，而不强加于人。
 
@@ -128,6 +128,6 @@ SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `aw
 
 **大型无损 JSON 值可能耗尽内存。** 工具绑定会在分发前对无损 JSON 创建快照，并完整返回规范 JSON 返回值。运行时会校验 worker 端口两侧，但不对单次绑定设置字节数上限；结构化克隆成本以及进程或 worker 内存构成实际边界。只有包含日志、完成值和失败诊断的组合外层输出账本受字节数上限约束。
 
-**仅序列化的子分发。** `Promise.all` 尚未获得挂钟并行性，仅减少往返次数；模型可能过度期望。说明中已声明；解除此限制与原生并行分发 TODO 所需的并发安全元数据绑定。
+**子分发的重叠由工具自身的安全声明限定，而非由调用方决定。** 程序里的 `Promise.all` 或 `asyncio.gather` 只在工具自己分类为并发安全的调用之间换来挂钟并行性；一串 exclusive 调用仍要按顺序付出各自的往返开销，模型可能过度期望。两种 flavor 的 SDK 说明都陈述了真实契约。本 note 交付的是使该风险绝对化的序列化占位实现；调度器及其重叠上限由[实时并行 Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) 负责。
 
 **预算计量读取事件循环，而非 flag。** 忙碌时间轮询（`eventLoopUtilization()`）比精确 CPU 计量更粗糙——预算到期最多延迟一个轮询间隔——且其正确性声明（「pending 的分发不能暂停它」）是抵御恶意程序的关键。两种情况均有单元测试（带 pending 诱饵分发的热循环会在耗尽 `computeMs` 预算时终止；等待慢速绑定的空闲程序则会持续运行至 `maxWallMs`），轮询间隔是内部常量而非配置——部署无法将其误调为绕过手段。`maxWallMs` 是配置项，且会传入 `setTimeout`，后者会把超过 `MAX_TIMER_DELAY_MS`（2^31-1 ms）的延迟夹到 1 ms；因此仅有正数校验会放行一个 25 天的上限，它在第一个 tick 就到期，使每次运行都超时。worker 运行时正因如此在加载时对该字段做范围校验。`computeMs` 不需要上界，因为它对照的是实测占用率，而不是交给定时器。

.agents/notes/implemented/feature/2026-06-29-todo-write-tool.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/2026-06-29-todo-write-tool.md
-2026-06-29-todo-write-tool.md: 288932f641a37c13ea6beeb069ac360c4a8447c1
-2026-06-29-todo-write-tool.zh.md: 2eced2e1670c20726989137d441d1c78df289641
+2026-06-29-todo-write-tool.md: c4cf64b7876bd8b80df80fe6fc27005715f96b5e
+2026-06-29-todo-write-tool.zh.md: 1f797c5517df8affd66addecf2a8db43c1da3332

.agents/notes/implemented/feature/2026-06-29-todo-write-tool.md

@@ -6,7 +6,7 @@ English | [中文](2026-06-29-todo-write-tool.zh.md)
 
 ## Problem
 
-The harness gives the model bash and subagent tools but no way to record a structured task list. A todo list serves two co-equal purposes: it steers the model to plan multi-step work and keep the active task unambiguous (at most one active, exactly one while work remains), and it gives an interactive host a live progress checklist. Every reference coding agent surveyed (claude-code, opencode, codex, oh-my-pi, pi) ships some form of this; the harness had nothing.
+The harness gives the model bash and subagent tools but no way to record a structured task list. A todo list serves two co-equal purposes: it steers the model to plan multi-step work and keep the active work unambiguous, and it gives an interactive host a live progress checklist. Every reference coding agent surveyed (claude-code, opencode, codex, oh-my-pi, pi) ships some form of this; the harness had nothing.
 
 ## Decision
 
@@ -34,7 +34,7 @@ Each list belongs to the calling agent session, and non-agent calls are rejected
 
 ### Validation: the cheap middle
 
-The schema enforces type/required/enum. Beyond that, `execute` rejects empty or duplicate `content` and more than one `in_progress` task. claude-code leaves single-in-progress to the prompt; oh-my-pi enforces it in code. We take the middle: enforce the cheap invariants that make a plan *coherent* (no blank tasks, no dupes, at most one active), but leave ordering and the discipline of keeping the list current to the model via the tool description. A rejected write returns an `isError` result so the model self-corrects.
+The schema enforces type/required/enum. Beyond that, `execute` rejects empty or duplicate `content` and, when `allowParallelInProgress` is `false`, more than one active task. Ordering and keeping the list current remain model disciplines expressed in the tool description. A rejected write returns an `isError` result so the model self-corrects. The required deployment policy and the durable invariant's independence from it are owned by the [parallel in-progress Agent Note](2026-07-26-todo-parallel-in-progress.md).
 
 ## Why no cordis-catalog entry / no `@mode`
 

.agents/notes/implemented/feature/2026-06-29-todo-write-tool.zh.md

@@ -6,7 +6,7 @@ Status: implemented
 
 ## 问题
 
-harness 为模型提供了 bash 和 subagent 工具，却没有办法记录结构化的任务列表。todo 列表有两个同等重要的用途：引导模型规划多步骤工作并保持当前活跃任务明确（最多一个活跃，有剩余工作时恰好一个）；同时为交互式宿主提供实时进度清单。调研的所有参考编码 agent（智能体），包括 claude-code、opencode、codex、oh-my-pi 和 pi，都提供了某种形式的此功能；本 harness 此前没有。
+harness 为模型提供了 bash 和 subagent 工具，却没有办法记录结构化的任务列表。todo 列表有两个同等重要的用途：引导模型规划多步骤工作并保持当前活跃任务明确；同时为交互式宿主提供实时进度清单。调研的所有参考编码 agent（智能体），包括 claude-code、opencode、codex、oh-my-pi 和 pi，都提供了某种形式的此功能；本 harness 此前没有。
 
 ## 决策
 
@@ -34,7 +34,7 @@ claude-code V1 的条目是 `{ content, status, activeForm }`；后来（V2）
 
 ### 校验：低成本的中间路线
 
-schema 强制 type/required/enum。在此之上，`execute` 拒绝为空或重复的 `content`，以及超过一个 `in_progress` 任务。claude-code 将单一 in_progress 交给提示词约束；oh-my-pi 在代码中强制。我们取中间路线：强制执行使计划*连贯*的低成本不变式（无空任务、无重复、最多一个活跃），但将排序和保持列表最新的纪律通过工具描述交给模型。被拒绝的写入返回 `isError` 结果，使模型自行修正。
+schema 强制 type/required/enum。在此之上，`execute` 拒绝为空或重复的 `content`，并在 `allowParallelInProgress` 为 `false` 时拒绝超过一个活跃任务。排序和保持列表最新仍通过工具描述交给模型。被拒绝的写入返回 `isError` 结果，使模型自行修正。必填的部署策略及持久日志不变式独立于该策略这一约定，由[并行 in-progress Agent Note](2026-07-26-todo-parallel-in-progress.md) 负责。
 
 ## 为何没有 cordis-catalog 条目 / 没有 `@mode`
 

.agents/notes/implemented/feature/2026-07-23-web-todo-display.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/2026-07-23-web-todo-display.md
-2026-07-23-web-todo-display.md: d5939c0fa6ab83a61f1932622c4b6a150ccaded7
-2026-07-23-web-todo-display.zh.md: b1ecf679efe81016e00c5c1221c04730b3ce98bb
+2026-07-23-web-todo-display.md: 9e6e4914cd24d1db9271baa3d3fb6fdc56a9ac65
+2026-07-23-web-todo-display.zh.md: 5a5ac554b37c255a7d8c1ce821ebeb1b3f9f091f

.agents/notes/implemented/feature/2026-07-23-web-todo-display.md

@@ -18,11 +18,11 @@ Consume `todo/write` as a Session side effect, not a surface node, and render it
 
 ### TodoPanel: the durable list as a persistent strip
 
-The panel mounts through the `conversation.input.dock` slot (a plain registrant plugin, `todoDockEntry`, using `ctx.slots.inject` with no `ConversationService` edge, `order: -1` above the queue rows), hidden while empty, collapsible to a header of title + `"<done>/<total> tasks · <n> in progress"` (no in-progress content hint when collapsed). Status glyphs are the figma todo set (green check ring / blue fading ring / dashed pending ring) on a tip-surface card (`--dsw-specific-tip`, 14px radius, `width: calc(100% - 88px)` / `max-width: 776px` centered; InputBar top pad 6px is the gap to the composer card). It reads `snapshot.todos` via the standard-kit `useSession` hook the dock entry receives — no store, no service, no ctx. The inner component stays props-complete and framework-free; the dock adapter is a one-line wrapper.
+The panel mounts through the `conversation.input.dock` slot (a plain registrant plugin, `todoDockEntry`, using `ctx.slots.inject` with no `ConversationService` edge, `order: 0` above the queue rows), hidden while empty, collapsible to a header of title + `·`-joined per-status counts (localized, `1 completed · 2 in progress · 1 pending`, zero-count segments omitted; no in-progress content hint when collapsed). Status glyphs are the figma todo set (green check ring / blue fading ring / dashed pending ring) on a tip-surface card (`--dsw-specific-tip`, 14px radius, `width: calc(100% - 88px)` / `max-width: 776px` centered; InputBar top pad 6px is the gap to the composer card). It reads the host-computed `todos` projection via the standard-kit `useProjection` hook the dock entry receives — no store, no service, no ctx. The inner component stays props-complete and framework-free; the dock adapter is a one-line wrapper.
 
 ### TodoRow: the per-call row through the keyed toolview slot
 
-The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`, mounted from `apply`) that registers into the keyed `conversation.chat.toolview` slot through `ctx.slots.inject`, the same declaration-lifetime posture as the bash sample but a product registration. The summary derives from call args (`N/M done · active item`); unparseable args fall back to the generic row summary; clicking opens the details column with the raw args. No `ToolEventView` is added for todo — presentation is client-owned, and the durable list renders from the session event, not the tool card.
+The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`, mounted from `apply`) that registers into the keyed `conversation.chat.toolview` slot through `ctx.slots.inject`, the same declaration-lifetime posture as the bash sample but a product registration. The summary derives from call args (`N/M done · first active item`, with a `+<n>` count of the other active ones in `ToolRow`'s non-shrinking `summarySuffix` slot); unparseable args fall back to the generic row summary; clicking opens the details column with the raw args. No `ToolEventView` is added for todo — presentation is client-owned, and the durable list renders from the session event, not the tool card.
 
 ## Alternatives considered
 
@@ -33,4 +33,4 @@ The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`
 
 ## Consequences
 
-Replay correctness is owned by one code path: any future change to window rebuild keeps todos consistent for free, and the fixture (fx-alpha turn 65) plus the assembled keyless snapshot (`apps/web/tests/todo-display.snapshot.ts`) pin the full chain (row summary and state, dock panel content, collapse round-trip) over the built client graph. `todos` is a required `ConversationSnapshot` field, so scripted fakes in specs must carry it. The TUI panel shares the same turn-scoped lifetime (the automation-only ACP bridge deliberately omits todo presentation); the web surfaces render the same event, adding one wire field and no new event type. That field is how cold-load reconstruction stays host-backed: the tail history page carries `todos` — the full-log standing plan (latest `todo/write` with no later `turn/start`), computed independently of the page window (the same backscan posture the view pairing uses) — so a reopened session restores the plan when it still stands and the last write precedes the window; that value survives an older-page prepend, is overwritten by any later write, clears on a later `turn/start`, and resets to empty when a tail response carries no projection.
+Replay correctness is owned by one code path: any future change to window rebuild keeps todos consistent for free, and the fixture (fx-alpha turn 71) plus `packages/client/ui-conversation/tests/todo-panel.spec.tsx` pin the full chain (row summary and state, dock panel content, collapse round-trip). `todos` is a required `ConversationSnapshot` field, so scripted fakes in specs must carry it. The automation-only ACP bridge deliberately omits todo presentation; the web surfaces render the same event, adding one wire field and no new event type. That field is how cold-load reconstruction stays host-backed: the tail history page carries `todos` — the full-log standing plan (latest `todo/write` with no later `turn/start`), computed independently of the page window (the same backscan posture the view pairing uses) — so a reopened session restores the plan when it still stands and the last write precedes the window; that value survives an older-page prepend, is overwritten by any later write, clears on a later `turn/start`, and resets to empty when a tail response carries no projection.

.agents/notes/implemented/feature/2026-07-23-web-todo-display.zh.md

@@ -18,11 +18,11 @@ Status: implemented
 
 ### TodoPanel：持久化列表作为一条常驻横条
 
-面板经 `conversation.input.dock` slot 挂载（普通注册者插件 `todoDockEntry` 使用 `ctx.slots.inject`，不依赖 `ConversationService`，`order: -1` 排在队列条上方），空列表时隐藏，可折叠为标题加 `"<已完成>/<总数> tasks · <n> in progress"` 的表头（折叠态不再附带进行中条目正文）。状态图标为 figma todo 套件（绿色勾选环／蓝色渐隐环／虚线未开始环），卡片使用 tip 表面（`--dsw-specific-tip`、14px 圆角、`width: calc(100% - 88px)`／`max-width: 776px` 居中；InputBar 顶部 6px 内边距是到输入卡的间距）。它经 dock entry 收到的标准件 `useSession` hook 读取 `snapshot.todos`——无 store、无 service、无 ctx。内部组件保持 props 完备且框架无关；dock 适配件只是一行包装。
+面板经 `conversation.input.dock` slot 挂载（普通注册者插件 `todoDockEntry` 使用 `ctx.slots.inject`，不依赖 `ConversationService`，`order: 0` 排在队列条上方），空列表时隐藏，可折叠为标题加以 `·` 连接的各状态计数的表头（本地化，形如 `1 已完成 · 2 进行中 · 1 待处理`，计数为零的段落省略；折叠态不再附带进行中条目正文）。状态图标为 figma todo 套件（绿色勾选环／蓝色渐隐环／虚线未开始环），卡片使用 tip 表面（`--dsw-specific-tip`、14px 圆角、`width: calc(100% - 88px)`／`max-width: 776px` 居中；InputBar 顶部 6px 内边距是到输入卡的间距）。它经 dock entry 收到的标准件 `useProjection` hook 读取 host 计算的 `todos` 投影——无 store、无 service、无 ctx。内部组件保持 props 完备且框架无关；dock 适配件只是一行包装。
 
 ### TodoRow：经 keyed toolview slot 的逐调用行
 
-专用的 `todo_write` 对话行是一个普通注册者插件（`todoToolview`，由 `apply` 挂载），经 `ctx.slots.inject` 注册进 keyed 的 `conversation.chat.toolview` slot，遵循与 bash 样例相同的声明生命周期，但属产品级注册。摘要由调用 args 推导（`N/M done · active item`）；无法解析的 args 回退到通用行摘要；点击会以原始 args 打开 details 列。todo 不新增任何 `ToolEventView`——呈现归客户端所有，常驻列表从会话事件渲染，而非工具卡。
+专用的 `todo_write` 对话行是一个普通注册者插件（`todoToolview`，由 `apply` 挂载），经 `ctx.slots.inject` 注册进 keyed 的 `conversation.chat.toolview` slot，遵循与 bash 样例相同的声明生命周期，但属产品级注册。摘要由调用 args 推导（`N/M done · first active item`，其余活跃项的 `+<n>` 计数放在 `ToolRow` 的不收缩 `summarySuffix` 位里）；无法解析的 args 回退到通用行摘要；点击会以原始 args 打开 details 列。todo 不新增任何 `ToolEventView`——呈现归客户端所有，常驻列表从会话事件渲染，而非工具卡。
 
 ## 考虑过的替代方案
 
@@ -33,4 +33,4 @@ Status: implemented
 
 ## 后果
 
-回放正确性由一条代码路径掌管：未来对窗口重建的任何改动都会自然保持 todos 一致；fx-alpha 第 65 轮的 fixture（测试前置数据）加上组装后的无密钥快照（`apps/web/tests/todo-display.snapshot.ts`）在构建后的完整客户端依赖图中固定整条链（行摘要与状态、dock 面板内容、折叠往返）。`todos` 是 `ConversationSnapshot` 的必填字段，所以 spec 里脚本化的 fake 必须带上它。TUI 面板共用同一按轮次界定的生命周期（自动化专用的 ACP 桥接刻意不做 todo 呈现）；Web 各面渲染同一个事件，只新增一个协议字段，不新增事件类型。这个由 host 提供的字段正是冷加载重建的依据：history 尾页附带 `todos`——全量 log 上当前有效的计划（其后没有更晚 `turn/start` 的最近一次 `todo/write`），独立于分页窗口计算（与 view 配对同一种 backscan 姿势）——因此重开会话时若计划仍然有效且最后一次写入落在窗口之前，计划也照常恢复；该值跨往前翻页保留，之后的任何写入照常覆盖，更晚的 `turn/start` 会清空，而尾页响应不带投影时复位为空。
+回放正确性由一条代码路径掌管：未来对窗口重建的任何改动都会自然保持 todos 一致；fx-alpha 第 71 轮的 fixture（测试前置数据）加上 `packages/client/ui-conversation/tests/todo-panel.spec.tsx` 固定整条链（行摘要与状态、dock 面板内容、折叠往返）。`todos` 是 `ConversationSnapshot` 的必填字段，所以 spec 里脚本化的 fake 必须带上它。自动化专用的 ACP 桥接刻意不做 todo 呈现；Web 各面渲染同一个事件，只新增一个协议字段，不新增事件类型。这个由 host 提供的字段正是冷加载重建的依据：history 尾页附带 `todos`——全量 log 上当前有效的计划（其后没有更晚 `turn/start` 的最近一次 `todo/write`），独立于分页窗口计算（与 view 配对同一种 backscan 姿势）——因此重开会话时若计划仍然有效且最后一次写入落在窗口之前，计划也照常恢复；该值跨往前翻页保留，之后的任何写入照常覆盖，更晚的 `turn/start` 会清空，而尾页响应不带投影时复位为空。

.agents/notes/implemented/feature/2026-07-26-todo-parallel-in-progress.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/2026-07-26-todo-parallel-in-progress.md
+2026-07-26-todo-parallel-in-progress.md: 2805ef894050d1b1cffe06fce59a4984d463f8d1
+2026-07-26-todo-parallel-in-progress.zh.md: 16b32daa05b10f24eacde4cec9622b2159cdef09

.agents/notes/implemented/feature/2026-07-26-todo-parallel-in-progress.md

@@ -0,0 +1,54 @@
+# Agent Note: Allow several `in_progress` todos at once
+
+Status: implemented
+
+English | [中文](2026-07-26-todo-parallel-in-progress.zh.md)
+
+## Problem
+
+The [original `todo_write` design](2026-06-29-todo-write-tool.md) enforced at most one `in_progress` task per list, both in `execute` and in the durable-log invariant. That invariant assumes sequential work, but the harness runs genuinely parallel work — concurrent subagents through the delegation tool, background bash commands, workflow fan-out — and a list that can name only one active task cannot represent it. The model was forced to either mislabel parallel tasks as `pending` or merge them into one vague item, and the UI progress checklist under-reported what was actually running.
+
+## Decision
+
+Make the single-`in_progress` cap a deployment policy instead of a fixed rule, requiring every composition to choose:
+
+- `packages/todo/tool-todo/src/index.ts` gains the required `Config.allowParallelInProgress` field. At `true`, `execute` accepts any number of active items and the description instructs the model to mark every actively-worked task — several during parallel work, one for sequential work — keeping at least one while work remains. At `false`, the description asks for exactly one and `execute` rejects a call marking more.
+- The durable-log invariant in `packages/todo/tool-todo/src/invariant.ts` no longer rejects snapshots with several active items, and does not follow the config, so previously-persisted logs are unaffected and parallel snapshots replay cleanly under either policy.
+
+The remaining coded invariants are unchanged: non-empty trimmed unique `content`, valid status enum. This supersedes the "at most one active" clause of the [original design's validation decision](2026-06-29-todo-write-tool.md); the rest of that Agent Note (whole-list replace, log-backed state, single owner) stands.
+
+## Why guidance, not a parallelism-aware invariant
+
+A coded invariant can only see the list, not the runtime: whether two `in_progress` items are legitimate depends on whether work is actually running concurrently, which the tool cannot observe. Enforcing a cap was therefore wrong in exactly the cases parallelism made it matter, and any replacement (for example, capping active items at the live subagent count) would couple the tool to runtimes it deliberately knows nothing about. The discipline of matching `in_progress` marks to genuinely concurrent work moves to the tool description, the same place ordering and list freshness already live.
+
+## The policy is a deployment choice
+
+Whether concurrent active tasks are legitimate depends on runtime concurrency the tool cannot observe — but whether a deployment's agents ever run work concurrently is knowable at composition time. That makes the policy a required `Config` field rather than a constant or default: every cordis.yml composition sets `allowParallelInProgress` deliberately, choosing `true` for agents that may fan out work or `false` for the single-active discipline.
+
+The flag moves the model-facing instruction and the accepted input together. Splitting them would be the bug: a description asking for one active task while `execute` accepts several teaches the model a rule the tool does not hold, and the reverse rejects calls the description invited. Only the active-status clause of the description varies, because that is the only instruction the policy changes.
+
+The durable-log invariant deliberately does NOT follow the flag. A log written while parallel work was allowed must still replay after a deployment tightens the policy, so tying `invariant.ts` to the current config would reject history that was valid when it was written. The invariant stays silent on the active count; the tool is where the policy applies, at the moment of the write.
+
+## Alternatives considered
+
+- **Keep the cap and add an explicit parallel opt-in flag** — an extra argument on every call to serve the common case; the flag would be noise for sequential work and still unverifiable.
+- **Cap active items at a configured maximum** — any fixed number is arbitrary. This is why the config field is a boolean policy switch and not a count: "may several tasks be active" is a property of the deployment, while "at most N" invents a threshold nothing can justify.
+- **Hardcode the parallel policy** — the first revision of this branch did, which is what made `allowParallelInProgress` necessary: a deployment running strictly sequential agents had no way back to the discipline it wanted.
+
+## The display surfaces are part of the change
+
+Lifting the cap makes a list shape reachable that no renderer had ever received, so this branch stacks on the [web todo display](2026-07-23-web-todo-display.md) rather than landing beside it: both change `tool-todo`, and the GUI is where a parallel plan becomes visible. Two web sites derived their one-line summary with `todos.find(t => t.status === 'in_progress')` — the collapsed plan-strip header and the `todo_write` row — and under the old cap that `find` was total, since at most one item could match. With several active it silently dropped every active item but the first: a four-item plan with three running tasks collapsed to the name of one, and the row read `1/4 已完成 · <one task>` while two others were in flight. The expanded list was always correct (it maps every item), which is why neither PR's tests caught it — only the collapsed header and the row lost information. The panel redesign in [#740](https://github.com/deepseek-harness/deepseek-harness/pull/740) has since replaced the collapsed header's named hint with `·`-joined per-status counts (localized, `1 completed · 2 in progress · 1 pending`, zero-count segments omitted), which reports parallel work correctly and needs no name to truncate; the row is the one site this branch still had to fix.
+
+The row takes `planSummary` in `toolviews/plan-summary.ts`. It names the first active item and counts the rest, so the row reports how many tasks are running instead of implying one. Naming every active item was rejected: the row is a single line, and an unbounded join would overflow it — the count degrades predictably where a list does not. The derivation sits inside the toolviews domain rather than in `contract/`, the inter-domain face: the panel computes its own counts inline and shares nothing with the row, so a contract module would declare a sharing relationship that no longer exists.
+
+`planSummary` returns the name and the count as separate fields rather than one joined string, because the row truncates its summary with `overflow: hidden` / `text-overflow: ellipsis`. A count appended to the task name sits at the far end of the truncatable text, so exactly the narrow viewports and long task names that make the count informative are the ones that clip it away, leaving a parallel plan indistinguishable from a sequential one. The row therefore hands the count to the shared `ToolRow` as `summarySuffix`, a non-shrinking slot beside the ellipsized summary text; a pre-joined string could not express that split, and pushing the count in front of the name was rejected because the task name is what the reader is looking for first.
+
+`summarySuffix` is a slot on `ToolRow` rather than markup owned by the todo row: every toolview renders through that shared component, whose `summary` is a plain ellipsized string with no place for a fragment that must survive the clip. Sitting outside the `.summary` rule, the suffix repeats that rule's `font-size` and `line-height` — the web shell leaves body text at the browser default rather than the row's 14px, so an unstyled span renders visibly larger than the text beside it on a 24px row. An error row drops the suffix, because its collapsed summary is the failure line rather than anything derived from the call args.
+
+## Deferred
+
+Two review findings are recorded here rather than fixed on this branch. The `summarySuffix` span carries no accessible name, so a screen reader reads the count without its noun (`… 实现 fixture 样本 +1`); naming it introduces localized copy with its own test contract, which belongs to an accessibility pass over the whole `ToolRow` summary line rather than to one row. And when the *first* active item's content is unusable — missing, mistyped, or blank once trimmed — the row drops the active clause and the count with it, so a parallel plan renders as bare counts; skipping forward to the first usable active item was rejected because call args are an explicitly unvalidated boundary where model order is the only ordering the row can honour, and dropping the unusable clause alone keeps the `done`/`total` counts, which are trustworthy regardless.
+
+## Consequences
+
+A todo list can now faithfully mirror parallel execution, and every surface renders several active markers at once: the plan strip's header counts the active items, and the row needed the derivation above. A composition that sets `allowParallelInProgress: true` no longer rejects a formerly-invalid snapshot shape; one that sets `false` keeps the old rejection, and the durable-log invariant accepts both. The model-facing description changed, which re-recorded the tool-catalog page and every snapshot sidecar carrying the todo schema. No count is recorded here: the set grows with every pinning scenario that lands, and the two point-in-time censuses this note previously carried were both stale within days. The operative rule is that a branch changing the tool description must refresh whichever sidecars landed after it branched — including the numbered `tool-schemas.<n>.expected.json` files pinning a subagent class, whose schemas the parent scenario does not cover — and `pnpm run test:snapshot:refresh` does it keylessly over the whole corpus. The web fixture's todo sample now runs two items `in_progress`, so both fixture-driven surfaces render a parallel plan. `packages/client/ui-conversation/tests/todo-panel.spec.tsx` pins the row summary and the plan strip over src, the ACP `todo-write` scenario records a three-todo plan with two active, and `apps/web/tests/todo-row.snapshot.ts` pins both surfaces in the assembled application — booted from the built `packages/client/*/lib/client.js` bundles, so it is the one place the keyed registration and the bundled wiring are under test. That last file records `summary`, `suffix`, and the strip's header as separate fields, so folding the `+N` count back into the summary string changes the expected output even though the concatenated text would read the same.

.agents/notes/implemented/feature/2026-07-26-todo-parallel-in-progress.zh.md

@@ -0,0 +1,54 @@
+# Agent Note: 允许同时存在多个 `in_progress` todo
+
+Status: implemented
+
+[English](2026-07-26-todo-parallel-in-progress.md) | 中文
+
+## 问题
+
+[原始 `todo_write` 设计](2026-06-29-todo-write-tool.md)在 `execute` 和持久日志不变式中都强制每个列表至多一个 `in_progress` 任务。该不变式假设工作是顺序进行的，但 harness 会运行真正并行的工作（通过委派工具启动的并发 subagent、后台 bash 命令、工作流扇出），而一个只能标出单个活跃任务的列表无法表示这种情况。模型被迫要么把并行任务错误标记为 `pending`，要么把它们合并成一个含糊的条目，导致 UI 进度清单少报了实际正在运行的工作。
+
+## 决策
+
+把单一 `in_progress` 上限从固定规则改为部署策略，并要求每个组合都作出选择：
+
+- `packages/todo/tool-todo/src/index.ts` 新增必填的 `Config.allowParallelInProgress` 字段。为 `true` 时，`execute` 接受任意数量的活跃条目，描述指示模型把每个正在处理的任务标记为 `in_progress`（并行工作时可以有多个，顺序工作时只有一个），并在仍有工作未完成时至少保留一个；为 `false` 时，描述要求恰好一个，`execute` 拒绝标记更多的调用。
+- `packages/todo/tool-todo/src/invariant.ts` 中的持久日志不变式不再拒绝含多个活跃条目的快照，且不跟随该配置，因此此前持久化的日志不受影响，并行快照在任一策略下都能干净回放。
+
+其余编码的不变式保持不变：`content` 去除首尾空白后非空且唯一、status 为合法枚举值。本决定取代[原始设计的校验决策](2026-06-29-todo-write-tool.md)中「至多一个活跃」的条款；该 Agent Note 的其余部分（整列表替换、日志支撑的状态、单一所有者）依然成立。
+
+## 为何用指引而非感知并行的不变式
+
+编码的不变式只能看到列表，看不到运行时：两个 `in_progress` 条目是否合理，取决于工作是否真的在并发运行，而这一点工具无法观测。因此，恰恰在并行让上限变得重要的场景里，强制上限反而是错的；任何替代方案（例如把活跃条目数限制为在线 subagent 的数量）都会把工具耦合到它有意一无所知的运行时上。把 `in_progress` 标记与真正并发的工作对应起来这一纪律，转移到工具描述中，也就是排序与列表新鲜度已经所在的地方。
+
+## 该策略是部署层的选择
+
+并发的活跃任务是否合理，取决于工具无法观测的运行时并发情况——但一个部署的 agent 是否会并发展开工作，在组装期就是可知的。因此该策略是必填的 `Config` 字段，而非常量或默认值：每个 cordis.yml 组合都会有意设置 `allowParallelInProgress`，为可能并行展开工作的 agent 选择 `true`，或为单活跃项纪律选择 `false`。
+
+该开关会同时改变面向模型的指令与接受的输入。把两者拆开才是 bug：描述要求只保留一个活跃任务、而 `execute` 却接受多个，等于教给模型一条工具并不遵守的规则；反过来则会拒绝描述所邀请的调用。描述中只有活跃状态那一句会变化，因为这是该策略唯一改变的指令。
+
+持久日志不变式刻意**不**跟随该开关。在允许并行时写下的日志，在部署收紧策略之后仍必须可回放，因此把 `invariant.ts` 绑定到当前配置会拒绝在写入当时合法的历史。不变式对活跃数量保持沉默；策略生效之处是工具，时机是写入的那一刻。
+
+## 曾考虑的替代方案
+
+- **保留上限并增加一个显式的并行 opt-in 标志**——为服务常见场景而给每次调用增加一个额外参数；这个标志对顺序工作而言只是噪声，而且仍然无法验证。
+- **把活跃条目限制在一个可配置的上限内**——任何固定数字都是任意的。这正是该配置字段是布尔策略开关而非数量的原因：「是否允许多个任务同时活跃」是部署的属性，而「最多 N 个」凭空发明了一个无从论证的阈值。
+- **把并行策略硬编码**——本分支的第一版就是如此，这也是 `allowParallelInProgress` 之所以必要的原因：运行严格顺序 agent 的部署没有任何办法回到它想要的纪律。
+
+## 展示面是本次改动的一部分
+
+解除上限使一种此前任何渲染器都不曾收到的列表形状变得可达，因此本分支 stack（栈叠）在 [web todo 展示](2026-07-23-web-todo-display.md)之上，而不是与之并行落地：两者都改 `tool-todo`，而 GUI 正是并行计划变得可见的地方。web 有两处用 `todos.find(t => t.status === 'in_progress')` 推导单行摘要——折叠态的计划横条表头与 `todo_write` 工具行——在旧上限下这个 `find` 是完备的，因为最多只能有一个条目匹配。一旦有多个活跃项，它会静默丢掉除第一个之外的全部活跃条目：一个四条目、三个任务在跑的计划折叠后只显示其中一个的名字，工具行读作 `1/4 已完成 · <一个任务>`，而另外两个仍在进行。展开态的列表始终正确（它遍历每个条目），这也是两个 PR 的测试都没抓到它的原因——只有折叠表头与工具行丢失了信息。其后 [#740](https://github.com/deepseek-harness/deepseek-harness/pull/740) 的面板重做已把折叠表头的具名提示换成以 `·` 连接的各状态计数（本地化后形如 `1 已完成 · 2 进行中 · 1 待处理`，计数为零的段落省略），它能正确报告并行工作，且不需要任何可被截断的名字；工具行才是本分支仍需修的那一处。
+
+工具行改用 `toolviews/plan-summary.ts` 中的 `planSummary`。它给出第一个活跃条目，并计数其余活跃项，因此工具行报告的是有多少任务在跑，而不是暗示只有一个。列出全部活跃条目被否决了：工具行是单行，无上界的拼接会溢出——在列表做不到的地方，计数能够可预测地降级。该推导放在 toolviews 域内而非 `contract/`（域间共享面）：面板自行内联计算其计数，与工具行不共享任何东西，因此放进 contract 会声明一种已不存在的共享关系。
+
+`planSummary` 把任务名与计数作为两个独立字段返回，而不是一个拼好的字符串，因为工具行用 `overflow: hidden` / `text-overflow: ellipsis` 截断其摘要文本。计数接在任务名之后时位于可截断文本的末端，于是恰恰是让计数变得有意义的那些场景——窄视口、长任务名——会把它裁掉，让并行计划看起来与顺序计划无异。因此工具行把计数交给共享的 `ToolRow`，作为 `summarySuffix`——一个紧邻被省略号截断的摘要文本、且不会收缩的槽位；一个预先拼好的字符串无法表达这个切分，而把计数放到任务名之前也被否决了：读者首先要找的是任务名。
+
+`summarySuffix` 是 `ToolRow` 上的槽位，而不是 todo 工具行自有的标记：每个 toolview 都经由这个共享组件渲染，而它的 `summary` 是一个会被省略号截断的普通字符串，容不下一个必须挺过截断的片段。该后缀落在 `.summary` 规则之外，因此重复了该规则的 `font-size` 与 `line-height`——Web 外壳把正文字号留在浏览器默认值而非该行的 14px，所以未加样式的 span 会明显大于同一 24px 行内与之并列的文本。错误行会丢弃该后缀，因为它折叠态的摘要是失败行，而非任何由调用 args 推导出的内容。
+
+## 暂缓项
+
+两条 review 结论在此记录而非在本分支修复。`summarySuffix` 这个 span 没有无障碍名称，屏幕阅读器读出的数量缺少它所修饰的名词（`… 实现 fixture 样本 +1`）；为它命名会引入带自身测试契约的本地化文案，这属于对整条 `ToolRow` 摘要行做的无障碍专项，而不属于某一行。以及，当*第一个*活跃条目的 content 不可用时——缺失、类型不对、或 trim 后为空——行会连同数量一起丢掉活跃子句，于是并行计划渲染成裸计数；向后跳到第一个可用活跃条目的方案被否决，因为调用 args 是一处明确未经校验的边界，模型给出的顺序是该行唯一能遵循的顺序，而只丢掉不可用的那个子句可以保住 `done`/`total` 计数——这两个数无论如何都是可信的。
+
+## 后果
+
+现在 todo 列表可以忠实反映并行执行，并且每个展示面都能一次渲染多个活跃标记：计划横条的表头会计数活跃条目，工具行则需要上述推导。设置 `allowParallelInProgress: true` 的组合不再拒绝一种此前无效的快照形状；设置为 `false` 的组合仍保留旧的拒绝行为，而持久日志不变式两者都接受。面向模型的描述发生了变化，这重新记录了 tool-catalog 页面以及每个带有 todo schema 的快照 sidecar。此处不记录数量：该集合会随每个新落地的 pin 场景增长，而本 Note 先前记过的两次点时刻计数都在几天内失实。有效规则是：改动工具描述的分支必须刷新它分叉之后落地的那些 sidecar —— 包括固定 subagent 类工具的编号文件 `tool-schemas.<n>.expected.json`，其 schema 不被父场景覆盖 —— `pnpm run test:snapshot:refresh` 可以无 key 地对整个语料完成刷新。web fixture 的 todo 样本现在有两个条目处于 `in_progress`，因此两个由 fixture 驱动的展示面渲染的都是并行计划。`packages/client/ui-conversation/tests/todo-panel.spec.tsx` 在 src 上固定工具行摘要与计划横条，ACP `todo-write` 场景录制的是三条目、两个活跃的计划，而 `apps/web/tests/todo-row.snapshot.ts` 在组装后的应用中固定这两个面——它从构建产物 `packages/client/*/lib/client.js` 启动，因此是唯一覆盖 keyed 注册与打包接线的地方。该文件把 `summary`、`suffix` 与横条表头记录为独立字段，因此即便拼接后的文本读起来一样，把 `+N` 计数折回摘要字符串也会改变预期输出。

.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: f43f7f9c9687e4494993d7e225d11cf6446a9954
-2026-07-29-web-message-icon-actions-and-clock.zh.md: a6261c65c1e9d77cea2de5624b2c9fde1278c612
+2026-07-29-web-message-icon-actions-and-clock.md: feced6aeb11d176d6c774242a4d1dae14f6730f8
+2026-07-29-web-message-icon-actions-and-clock.zh.md: 5e33182421b423f45c84dbe1a979505f4c31b819

.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md

@@ -12,6 +12,8 @@ The web chat user bubble already had copy / branch / edit IconActions but no clo
 
 **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.**
 
+The assistant seat is narrowed by the [completed-turn decision](../bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md): only a turn with a `turn/end` grants it, so a turn still producing steps hands the row to nothing. The user seat's branch control is removed outright by the [user-bubble branch removal](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md); a user row's IconActions are clock and copy.
+
 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

.agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.zh.md

@@ -12,6 +12,8 @@ Web 聊天的用户气泡已有复制、分支、编辑 IconActions，但没有
 
 **用户气泡在既有 IconActions 行的开头添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。**
 
+assistant 一侧的座位由[已完成轮次决策](../bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md)收紧：只有存在 `turn/end` 的轮次才授予该行，仍在产出步骤的轮次不把该行交给任何节点。user 一侧的分支控件被 [user 气泡分支移除决策](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md)直接移除；user 行的 IconActions 只有时钟与复制。
+
 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，且不新增框架钩子。`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`。组装后的界面由 `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

.agents/notes/implemented/feature/2026-07-31-code-mode-language-dispatch.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-code-mode-language-dispatch.md
+2026-07-31-code-mode-language-dispatch.md: 96001252d6494d058a8df9974fb5a0d59e7d7112
+2026-07-31-code-mode-language-dispatch.zh.md: aa7eb2a6b4b9117f1d707b37afcdbe12b814bad2

.agents/notes/implemented/feature/2026-07-31-code-mode-language-dispatch.md

@@ -0,0 +1,46 @@
+# Agent Note: Code Mode language dispatch and the Python SDK renderer
+
+Status: implemented
+
+English | [中文](2026-07-31-code-mode-language-dispatch.zh.md)
+
+## Problem
+
+Code Mode generated one SDK flavor: TypeScript. `ToolRegistry` hard-coded `renderToolsSdk` for the `tools:sdk` section and `requireCodeRuntime` rejected any `ctx.codeRuntime.language !== 'typescript'`. Adding a CPython backend means a program's source language is no longer fixed: the same visible tool registry must project a Python SDK when a Python runtime is loaded, and the model-facing `run_code` schema strings ("Execute a Python program …") must match the SDK section's language so the model never sees a TypeScript instruction over a Python runtime.
+
+This is the tool-facing half of the multi-language Code Mode split; the [code-runtime seam](../../../../packages/code-runtime/code-runtime/README.md) already carries `CodeRuntime.language`. This note owns only how `dsh-tools` dispatches on that field. The backend that implements `language: 'python'` is owned by its own note, delivered separately.
+
+## Decision
+
+Language selection is a lookup on `ctx.codeRuntime.language`, resolved lazily at prompt assembly, against two parallel tables in `dsh-tools`:
+
+- `SDK_RENDERERS` (index.ts) maps a language to its `tools:sdk` renderer — `typescript → renderToolsSdk`, `python → renderToolsSdkPy`. The `tools:sdk` section reads the loaded runtime's language and picks the renderer; `requireCodeRuntime` rejects a `mode: code`/`both` runtime whose language is absent from the table, naming the known languages.
+- `RUN_CODE_FLAVORS` (code-mode.ts) maps a language to its two model-facing `run_code` strings (tool `description` and the `code` parameter description), so a language's SDK section and its transport schema always agree.
+
+Both tables are read with `Object.hasOwn` before use so a language named `toString`/`constructor` cannot resolve an inherited `Object.prototype` member as a renderer. The two guards differ in reachability: `SDK_RENDERERS`' in-callback guard is unreachable because `requireCodeRuntime` validated the same `const` table earlier in the same callback (it carries a `/* v8 ignore */`), while `RUN_CODE_FLAVORS`' guard is the primary, publicly reachable rejection — any language absent from the flavor table hits it through `run_code`'s language-aware getters, which the public `schemas()` reaches without passing `requireCodeRuntime` first; the test reads one of those getters off the definition directly, under a language absent from both tables. A language present in `SDK_RENDERERS` but not `RUN_CODE_FLAVORS` is drift the shared `CodeSdkLanguage` `satisfies` pins reject at `typecheck`, so it is not an input either guard can see; what the guards still own is a mounted runtime reporting a language absent from both tables. Schema emission reads the runtime through `peekRuntime()` rather than `requireRuntime()`: `undefined` (no runtime mounted, reached by definition readers and `schemas()`, of which the doc-catalog harvest is the only shipped one and none of which feeds a model because assembly passes `requireCodeRuntime` first) degrades to the TypeScript flavor, whereas a mounted unknown language fails loud — this is NOT the silent fallback rejected below, which concerns emitting a wrong-language SDK for a real runtime. Adding a backend language is three parallel edits — a `CodeSdkLanguage` member and the two table entries — plus its renderer and the prose that names the well-known values instead of deriving them (the seam's `dsh-code-runtime` README pair, its `CodeRuntime.language` JSDoc, and the `docs/core-data-structures/code-runtime.md` pair; this package's own README pair and its `Config.mode` JSDoc — no gate checks any of it), with no `agent-loop` or registry-structure change.
+
+`code-mode.ts` depends only on the runtime seam (`@deepseek-ai/dsh-code-runtime`), never on a concrete backend; dispatch is by `runtime.language` at run time. The tool layer therefore lands independently of the protocol and backend PRs — it needs only the seam's `language` field, which is already on master.
+
+### The Python SDK renderer
+
+`py-types.ts` renders the same unified tool-schema vocabulary `jsonSchemaToTs` covers, targeting Python: `jsonSchemaToPy` emits a type expression per JSON-schema node, and `renderToolsSdkPy` assembles named `TypedDict`s for each visible tool's arguments and canonical output plus a `tools` object with usage instructions equivalent to the TypeScript flavor. Unsupported raw constructs degrade rather than throwing during assembly, matching the TypeScript renderer's contract. The output is deterministic — lexicographic tool order, byte-identical text for an unchanged tool set — so the prompt stays prefix-cache-friendly. Lexicographic means one ordered member stream: a tool whose name is not a legal attribute is listed as a `tools[name]` comment in its sorted position rather than partitioned to the end, matching how the TypeScript flavor quotes an exotic key in place. That stream forces one thing directly — comment lines are not statements, so a tool set that emits no method at all still needs an explicit `pass`. Three further rules are Python-specific rather than consequences of the ordering. The usage contract states that the declarations are static stubs and arguments are plain `dict`/`list` values: a `TypedDict` reads as a constructible class, so a model that writes `FooArgs(field=1)` gets a `NameError` — TypeScript's `interface` is visibly a type, and the TS flavor's "runs type-stripped" clause already covers it. A description becomes the method's docstring emitted as the FIRST statement of its body: above the `async def` the first one would document the `Tools` class and the rest would be dead expressions, leaving every method undocumented. And a `list[…]` chain degrades to `Any` past `MAX_LIST_NESTING`, because CPython's tokenizer rejects a line with more than 200 open brackets and the block must stay parseable Python — the same reason `docLines` escapes quotes and backslashes. `ts-types` needs neither: TypeScript attaches a leading `/** … */` to the member that follows it and bounds nesting nowhere in its grammar.
+
+The standard that cap serves is grammatical validity, and the boundary is deliberate: a long `A | B | …` union is valid Python at any length and is left uncapped, even though CPython's `compile()` exhausts its C recursion walking the left-nested `BinOp` spine (measured on 3.9: 1,000 branches compile, 5,000 raise `RecursionError`). Nothing compiles this block — it is prompt text — so that limit costs nothing, whereas capping union length would retire the deep-chain tests that pin the walk's linear time and the class-name propagation cap. A future renderer that does need compilable output should flatten unions rather than truncate them.
+
+`renderType` validates the whole schema once (`assertSupportedJsonSchema`) and then trusts it, wrapping the walk in one `try/catch` that degrades to `Any` — the same trusted-after-validation stance the sibling `ts-types` renderer takes at this typed same-process seam ([Trust TypeScript at typed same-process seams](../../../../AGENTS.md)). It deliberately carries NO defenses against a schema whose accessors mutate between reads (post-validation cycles, TOCTOU on `const`/`enum`, self-referential functions): the input is a first-party registration (a `defineTool` literal or a raw registration) or a wire-derived plain JSON schema — the former is trusted per AGENTS.md, the latter is a `JSON.parse` product that physically cannot carry accessors, and `renderType` re-validates the whole tree on every call regardless — so such inputs are unreachable, and adding per-shape guards here would break symmetry with `ts-types` (which has none) for values the static interface forbids. `jsonSchemaToPy(schema: unknown)` accepts `unknown` and returns `Any` on a malformed schema — the Python counterpart of the TS flavor's `unknown` — but its contract is "degrade an unsupported schema", not "survive an adversarial mutating one".
+
+## Alternatives considered
+
+- **A `language` config field on `ToolRegistry`.** Deployment would then have two places to name the language (the loaded runtime and the tools config) that can disagree; the loaded runtime is the single source of truth, so the registry reads it rather than duplicating it.
+- **Importing the Python backend into `code-mode.ts` to detect it.** That would couple the tool layer to a concrete backend and force the protocol/backend PRs to land first. Runtime dispatch on `language` keeps the layer backend-agnostic and independently shippable.
+- **A default renderer for an unknown language.** A silent fallback would emit a TypeScript SDK over, e.g., a Ruby runtime — the model would see instructions in the wrong language. Failing loud at assembly is the repository's misconfiguration stance.
+
+## Consequences
+
+Adding a backend language is three parallel edits — a `CodeSdkLanguage` member, an `SDK_RENDERERS` entry, and a `RUN_CODE_FLAVORS` entry — plus the renderer function the second points at, with no change to `agent-loop` or the registry structure. The two tables (`SDK_RENDERERS`, `RUN_CODE_FLAVORS`) must stay in step, and that invariant is checked statically rather than left to review: both are `satisfies`-checked against that one union, so a language added to one and not the other fails `typecheck`. This is the mechanical form the drift risk deserves — the runtime `Object.hasOwn` guards would catch it too, but only once a backend reporting that language ships: one PR after the drift, at the consumer's integration point rather than where it was introduced, and on this base never, since no second backend exists. The tables keep their `Record<string, …>` declared type because `CodeRuntime.language` is an unconstrained `string`; the union pins what the harness ships, the guards reject what a runtime reports. What stays outside that check is the prose that names the well-known values instead of deriving them: `dsh-code-runtime`'s README pair, its `CodeRuntime.language` JSDoc, and the `docs/core-data-structures/code-runtime.md` pair at the seam, plus this package's own README pair and its `Config.mode` JSDoc. Earlier notes name the values as the state at their own PR and are not on that list. Two separate reasons keep it ungated. Prose is not type-checked at all, wherever the union lives. And no type-level pin can stand in for it here: the interface package must not import its consumer's table, and `CodeRuntime.language` stays an unconstrained `string` by design, so moving the union into the seam would not apply it either. A unit test pinning the two key sets equal was rejected in favor of this: it would buy the same check at the cost of a test-only export of two private tables, and would run later than the compiler does. Which of the two runtime failures surfaces depends on the entry point, for a language absent from both tables: assembly reports the missing renderer, because `wireSchemas` calls `requireCodeRuntime` before projecting, while the public `schemas()` reaches `run_code`'s language-aware getters first and reports the missing flavor. The tool layer stays free of any concrete backend dependency, so it lands and is testable on master ahead of the Python protocol and backend.
+
+The cost is that the Python branch of both tables is unreachable on this base: `CodeRuntime.language` is set by the loaded backend, the only published backend is `dsh-code-runtime-worker` (`'typescript'`), and the registry reads the loaded runtime rather than a config field, so no assembled application can select `renderToolsSdkPy` or `PYTHON_FLAVOR`. The model-visible surface is therefore unchanged by this note's work until a backend reporting `'python'` is published, and this PR's coverage is unit-level — the renderer output plus the dispatch and rejection paths. The keyless snapshot for the Python model interface belongs to the PR that publishes that backend, because only there does a real `cordis.yml` over published plugins produce a Python assembly; a snapshot example that mounted a fixture runtime here would assert against a test double, which [docs/testing.md](../../../../docs/testing.md) rejects as a substitute for the assembled application transcript.
+
+Two runtime contracts the Python SDK text asserts are owed by that same backend PR. First, the instructions tell the model that exactly `tools` and `ToolCallError` are bound and that the declared `TypedDict` classes are not, so the backend must inject those two names — with `ToolCallError.toolName` populated per the seam's `errorClass` contract — and must NOT bind the declared class names into the program's globals; injecting them "helpfully" would make the SDK text false. Second, the language has to be bound to the request: `requireCodeRuntime` resolves `ctx.codeRuntime` separately at assembly and at `run_code` execution, so a reload that swapped the runtime between those two points would hand a program written against one flavor to the other. The split is finer than those two points — `run_code`'s `description` and `parameters` getters each call `resolveFlavor(peekRuntime())`, and `schemaOf` destructures both, so one projection reads the runtime twice; both reads are for `run_code`'s own schema, since the getters are installed on that one definition and every other definition carries plain data properties. A reload between those two reads yields a single schema whose two halves name different languages. Neither is reachable here — one published backend means both reads return the same flavor and no program ever runs against this renderer's output — and the cross-language rejection is not testable until a second language exists.
+
+Third, that PR owns the CPython floor, and with it the renderer's Unicode-table skew. Four expressions read the running engine's tables (Node 22.23.1: Unicode 17.0) while the interpreter uses its own (CPython 3.9.6: 13.0.0): `isBareIdentifier`'s `IDENTIFIER`, and `camelCase`'s split set, head test, and `toUpperCase()`. An interpreter older than the engine is the failing direction — the engine emits a character its tokenizer refuses, taking the whole block down — and it arrives by three independent paths. Through the predicate, a bare method or field name carrying a character added between the two versions — to `XID_Start` at its head, or to `XID_Continue` in any tail position, the middle of a name included. Through `camelCase`'s XID reads, a class name, which reaches emitted text whenever any object shape in the tool's schema declares a `TypedDict`, and which the predicate's verdict on the tool name does not gate: `zz-` plus U+1E4D0 never reaches the predicate's skew, since the `-` rejects it outright, yet it still declares `class Zz𞓐xArgs`. Through the case mapping, a class name derived from a tool the predicate accepted — a different table and a wider window than XID membership: U+019B is XID_Start and NFKC-stable, so `async def ƛ` compiles on 3.9.6, but Node uppercases it to U+A7DC (unassigned there; CPython's own `.upper()` is the identity) and `class ꟜArgs` fails with `invalid non-printable character U+A7DC`. The exposure window is the characters and mappings that changed between the two versions, so the PR that names a supported CPython range must decide explicitly between accepting it and pinning all four read points to tables for that floor — pinning the predicate alone leaves both class-name paths open. Nothing here can decide it: the floor does not exist yet, and a table pinned to a guess would be a deployment-varying constant with no configurability behind it. A second axis rides along with the floor and is not one of the four: the names and syntax the block would evaluate at definition time. `TypedDict` needs 3.8, the PEP 585 builtin generics `dict[str, Any]` and `list[…]` need 3.9, an `A | B` annotation 3.10, and `NotRequired` 3.11. These are not parse failures — the block parses on any version, which is the standard the `MAX_LIST_NESTING` cap serves — but definition-time evaluation failures, and nothing in the product evaluates this text. Recording them with the read points keeps "parseable on the supported range" from being read as "executable on it".

.agents/notes/implemented/feature/2026-07-31-code-mode-language-dispatch.zh.md

@@ -0,0 +1,46 @@
+# Agent Note: Code Mode 语言分发与 Python SDK 渲染器
+
+Status: implemented
+
+[English](2026-07-31-code-mode-language-dispatch.md) | 中文
+
+## 问题
+
+Code Mode 只生成一种 SDK 形态：TypeScript。`ToolRegistry` 为 `tools:sdk` 段硬编码了 `renderToolsSdk`，且 `requireCodeRuntime` 会拒绝任何 `ctx.codeRuntime.language !== 'typescript'`。引入 CPython 后端后，程序的源语言不再固定：同一个可见工具注册表在加载 Python 运行时时必须投射出 Python SDK，而面向模型的 `run_code` schema 字符串（"Execute a Python program …"）也必须与 SDK 段的语言一致，模型才不会在 Python 运行时下看到 TypeScript 指令。
+
+这是多语言 Code Mode 拆分中面向工具的那一半；[代码运行时 seam](../../../../packages/code-runtime/code-runtime/README.md) 已经携带 `CodeRuntime.language`。本 Note 只负责 `dsh-tools` 如何在该字段上分发。实现 `language: 'python'` 的后端由它自己的 Note 负责，单独交付。
+
+## 决策
+
+语言选择就是对 `ctx.codeRuntime.language` 的查表，在 prompt 装配时惰性解析，查 `dsh-tools` 里两张平行的表：
+
+- `SDK_RENDERERS`（index.ts）把语言映射到它的 `tools:sdk` 渲染器——`typescript → renderToolsSdk`、`python → renderToolsSdkPy`。`tools:sdk` 段读取所加载运行时的语言并选出渲染器；`requireCodeRuntime` 拒绝其语言不在表中的 `mode: code`/`both` 运行时，并列出已知语言。
+- `RUN_CODE_FLAVORS`（code-mode.ts）把语言映射到它那两条面向模型的 `run_code` 字符串（工具 `description` 与 `code` 参数描述），使一种语言的 SDK 段与它的传输 schema 始终一致。
+
+两张表在使用前都以 `Object.hasOwn` 读取，这样名为 `toString`/`constructor` 的语言不会把继承自 `Object.prototype` 的成员解析成渲染器。两个守卫的可达性不同：`SDK_RENDERERS` 的段内守卫不可达，因为 `requireCodeRuntime` 已在同一回调更早处校验过同一张 `const` 表（它带 `/* v8 ignore */`）；而 `RUN_CODE_FLAVORS` 的守卫是主要的、可公开到达的拒绝路径——任何缺席 flavor 表的语言都经 `run_code` 的语言感知 getter 到达它，而公共 `schemas()` 抵达那些 getter 时并未先过 `requireCodeRuntime`；测试直读 definition 上的其中一个 getter，用的是对两张表都缺席的语言。「在 `SDK_RENDERERS` 里却不在 `RUN_CODE_FLAVORS` 里」这种漂移已由共享的 `CodeSdkLanguage` `satisfies` 在 `typecheck` 处拒绝，两个守卫都看不到这种输入；它们如今负责的是所挂载运行时报告了一门两张表都缺席的语言。schema 发射通过 `peekRuntime()` 而非 `requireRuntime()` 读取运行时：`undefined`（无运行时，由直读 definition 的读者与 `schemas()` 到达，其中 doc-catalog 采集是唯一已交付的一个，而它们都不会喂给模型，因为组装路径先过 `requireCodeRuntime`）降级到 TypeScript flavor，而挂载了未知语言则 fail loud——这不是下方被否决的静默回退，那指的是为真实运行时发出错误语言的 SDK。新增一门后端语言是三处并列编辑——一个 `CodeSdkLanguage` 成员加两条表项——再加它的渲染器，以及点名已知值而非从中派生的散文（seam 侧的 `dsh-code-runtime` README 双语对、它的 `CodeRuntime.language` JSDoc 与 `docs/core-data-structures/code-runtime.md` 双语对；本包自己的 README 双语对与它的 `Config.mode` JSDoc，无任何 gate 检查其中任何一处），不动 `agent-loop`，也不动注册表结构。
+
+`code-mode.ts` 只依赖运行时 seam（`@deepseek-ai/dsh-code-runtime`），绝不依赖具体后端；分发在运行时按 `runtime.language` 进行。因此工具层独立于协议和后端 PR 落地——它只需要 seam 的 `language` 字段，而该字段已在 master 上。
+
+### Python SDK 渲染器
+
+`py-types.ts` 渲染 `jsonSchemaToTs` 所覆盖的同一套统一工具 schema 词汇，目标为 Python：`jsonSchemaToPy` 为每个 JSON-schema 节点发出一个类型表达式，`renderToolsSdkPy` 为每个可见工具的参数与规范输出装配具名 `TypedDict`，再加一个带用法说明的 `tools` 对象，与 TypeScript 形态等价。不支持的原始构造在装配时降级而非抛错，与 TypeScript 渲染器的契约一致。输出是确定性的——工具按字典序排列，工具集不变时文本逐字节相同——因此 prompt 保持 prefix-cache 友好。字典序意味着单一有序的成员流：名字不是合法属性的工具以 `tools[name]` 注释出现在它排序后的位置上，而不是被分拣到末尾，与 TypeScript 形态就地为异常键加引号的做法一致。这个成员流直接决定了一件事：注释行不是语句，所以一个不发出任何方法的工具集仍需显式 `pass`。另有三条规则并非源自排序，而是 Python 特有。其一，用法约定声明这些声明只是静态存根、参数为普通 `dict`/`list` 值：`TypedDict` 读起来像一个可构造的类，模型若写 `FooArgs(field=1)` 会得到 `NameError`——TypeScript 的 `interface` 一眼就是类型，且 TS 形态的「runs type-stripped」一句已经覆盖了它。其二，描述会成为方法的 docstring，且必须作为方法体的**第一条语句**发出：放在 `async def` 之上，第一条会变成 `Tools` 的类文档、其余都是无效果表达式，导致每个方法都没有文档。其三，`list[…]` 链超过 `MAX_LIST_NESTING` 后降级为 `Any`，因为 CPython 的 tokenizer 拒绝一行中超过 200 个同时未闭合的括号，而这个块必须是可解析的 Python——与 `docLines` 转义引号和反斜杠是同一个理由。`ts-types` 两者都不需要：TypeScript 会把前置的 `/** … */` 附着到其后的成员上，其语法也不对嵌套设限。
+
+该上限服务的标准是**语法合法性**，这条边界是有意划定的：长的 `A | B | …` union 在任何长度下都是合法 Python，故不设上限——尽管 CPython 的 `compile()` 在沿左嵌套 `BinOp` 脊柱下降时会耗尽 C 递归（在 3.9 上实测：1,000 个分支可编译，5,000 个抛 `RecursionError`）。没有任何东西会编译这个块——它是提示词文本——所以那条限制在这里没有代价；而给 union 长度封顶会作废那几个钉住 walk 线性时间与类名传播上限的深链测试。将来若有渲染器确实需要可编译的输出，应当把 union 拍平，而不是截断。
+
+`renderType` 先用 `assertSupportedJsonSchema` 整树校验一次、随后信任它，用单个 `try/catch` 把整个遍历兜住并降级为 `Any`——与姊妹渲染器 `ts-types` 在这个 typed 同进程 seam 上采取的「校验后信任」姿态一致（[Trust TypeScript at typed same-process seams](../../../../AGENTS.md)）。它有意不设任何针对「访问器在多次读取间变值」的防御（校验后成环、`const`/`enum` 的 TOCTOU、自引用函数）：输入是第一方注册（`defineTool` 字面量或 raw 注册）或从 wire 桥接而来的纯 JSON——前者按 AGENTS.md 受信任，后者是 `JSON.parse` 产物、物理上不可能携带访问器，且每次调用 `renderType` 都会整树重新校验——这类输入不可达，而在此加逐形态守卫会为静态接口所禁止的值破坏与 `ts-types`（没有这类守卫）的对称。`jsonSchemaToPy(schema: unknown)` 接受 `unknown` 并对畸形 schema 返回 `Any`——TypeScript 形态 `unknown` 的对应物——但它的契约是「降级不支持的 schema」，而非「扛住对抗性的可变 schema」。
+
+## Alternatives considered
+
+- **在 `ToolRegistry` 上加一个 `language` 配置字段。** 那样部署方就会有两处命名语言（所加载的运行时与 tools 配置）且可能相互矛盾；所加载的运行时是唯一真相来源，故注册表读取它而不复制它。
+- **把 Python 后端 import 进 `code-mode.ts` 来检测它。** 那会把工具层耦合到具体后端，并迫使协议/后端 PR 先落地。按 `language` 运行时分发使该层保持后端无关、可独立发布。
+- **为未知语言提供默认渲染器。** 静默回退会在比如 Ruby 运行时上发出 TypeScript SDK——模型会看到错误语言的指令。在装配处 fail loud 是本仓库对错误配置的立场。
+
+## Consequences
+
+新增一门后端语言是三处并列编辑——一个 `CodeSdkLanguage` 成员、一个 `SDK_RENDERERS` 表项、一个 `RUN_CODE_FLAVORS` 表项——再加第二处所指向的渲染器函数，不动 `agent-loop`，也不动注册表结构。两张表（`SDK_RENDERERS`、`RUN_CODE_FLAVORS`）必须同步，且这条不变式由静态检查把关，而非交给 review：两张表都以 `satisfies` 对上述同一个 union 校验，因此只加其一而漏掉另一会在 `typecheck` 处失败。这正是该漂移风险应有的机械形式——运行期的 `Object.hasOwn` 守卫同样能捕获，但要等到有后端报告该语言之后：晚于漂移引入一个 PR，且触发点在消费方的集成处而非漂移引入处；在当前 base 上则永远不会触发，因为不存在第二个后端。两张表的声明类型仍是 `Record<string, …>`，因为 `CodeRuntime.language` 是不受约束的 `string`：union 钉住本仓库交付了什么，守卫拒绝运行时报告了什么。落在这条检查之外的是点名已知值而非从中派生的散文：seam 侧的 `dsh-code-runtime` README 双语对、它的 `CodeRuntime.language` JSDoc 与 `docs/core-data-structures/code-runtime.md` 双语对，再加本包自己的 README 双语对与它的 `Config.mode` JSDoc。更早的 note 点名这些值时记的是其自身 PR 当时的状态，不在此列。让它无 gate 的是两条独立理由。其一，散文根本不受类型检查，union 放在哪里都一样。其二，类型级替代在这里也不可用：接口包不得 import 其消费方的表，而 `CodeRuntime.language` 按设计保持不受约束的 `string`，即便把 union 迁进 seam 也不会作用到它。用一个断言两张表键集相等的 unit test 的方案被否决：它买到的是同一条检查，代价却是把两张私有表做测试专用导出，且运行时机晚于编译器。对两张表都缺席的语言，两种运行期失败中报出哪一条随入口而异：组装路径报缺渲染器，因为 `wireSchemas` 在投影前先调 `requireCodeRuntime`；而公共 `schemas()` 先经过 `run_code` 的语言感知 getter，报的是缺 flavor 表项。工具层不依赖任何具体后端，因此它能先于 Python 协议和后端在 master 上落地并可测。
+
+代价是两张表的 Python 分支在当前 base 上不可达：`CodeRuntime.language` 由所加载的后端设定，已发布的后端只有 `dsh-code-runtime-worker`（`'typescript'`），而注册表读取的是所加载的运行时而非某个配置字段，因此没有任何一份组装好的应用能选中 `renderToolsSdkPy` 或 `PYTHON_FLAVOR`。也就是说，在报告 `'python'` 的后端发布之前，本 note 的工作不改变模型可见表面，本 PR 的覆盖因此是 unit 级——渲染器输出加分发与拒绝路径。Python 模型界面的 keyless snapshot 归属于发布该后端的那个 PR，因为只有在那里，一份基于已发布插件的真实 `cordis.yml` 才会产出 Python 组装；在此处挂载 fixture 运行时的快照示例断言的是测试替身，而 [docs/testing.md](../../../../docs/testing.md) 明确拒绝以此替代组装好的应用 transcript。
+
+Python SDK 文本断言的两条运行时契约同样归属那个 backend PR。其一，说明文字告诉模型运行时恰好绑定 `tools` 与 `ToolCallError` 两个名字、所声明的 `TypedDict` 类不绑定，因此后端必须注入这两个名字（并按 seam 的 `errorClass` 契约填充 `ToolCallError.toolName`），且**不得**把所声明的类名绑进程序全局——「好心」注入会使这段 SDK 文本变成假话。其二，语言必须绑定到请求上：`requireCodeRuntime` 在组装时与 `run_code` 执行时分别解析 `ctx.codeRuntime`，若在这两点之间发生重载并换掉运行时，就会把针对一种形态写成的程序交给另一种形态执行。分裂比这两点更细——`run_code` 的 `description` 与 `parameters` 两个 getter 各自调用 `resolveFlavor(peekRuntime())`，而 `schemaOf` 会解构这两个字段，因此一次投影读两次运行时；两次都属于 `run_code` 自己的 schema，因为这两个 getter 只装在那一个 definition 上，其余 definition 携带的都是普通数据属性。在这两次读取之间重载会产出单个 schema 的两半分属不同语言。两者在此处都不可达——只有一个已发布后端意味着两次读取返回同一形态，且没有任何程序会针对本渲染器的输出运行——而跨语言拒绝在第二门语言存在之前也无法测试。
+
+其三，那个 PR 拥有 CPython 版本下限，连带拥有本渲染器的 Unicode 表偏斜。有四处表达式读所运行引擎的表（Node 22.23.1：Unicode 17.0），而解释器用它自己的表（CPython 3.9.6：13.0.0）：`isBareIdentifier` 的 `IDENTIFIER`，以及 `camelCase` 的切分集、头部测试与 `toUpperCase()`。解释器旧于引擎是会失败的那个方向——引擎发出的字符被其 tokenizer 拒收，整个块随之不可解析——而它经三条独立路径抵达。经判据抵达的是裸发的方法名或字段名，其中带有一个在两个版本之间新增的字符——首位加进 `XID_Start`，或尾部任意位置（含名字中部）加进 `XID_Continue`。经 `camelCase` 的 XID 读取抵达的是类名：只要工具 schema 中有任一对象形态声明 `TypedDict`，该类名就进入发出的文本，且判据对工具名的裁决并不对它设闸——工具名 `zz-` 加 U+1E4D0 因 `-` 被判据直接拒绝、从不触及那里的偏斜，却照样声明 `class Zz𞓐xArgs`。经大写映射抵达的是由判据已接受的工具派生出的类名——这是另一张表，窗口也比 XID 归属更宽：U+019B 既是 XID_Start 又 NFKC 稳定，故 `async def ƛ` 在 3.9.6 上可编译，但 Node 将其大写为 U+A7DC（在那里未分配；CPython 自己的 `.upper()` 在此是恒等），于是 `class ꟜArgs` 以 `invalid non-printable character U+A7DC` 失败。暴露窗口是两个版本之间发生变化的那些字符与映射，所以宣布支持某个 CPython 范围的那个 PR 必须在「接受该暴露」与「按该下限的表钉住全部四个读取点」之间显式作出决定——只钉判据会同时留下两条类名路径。此处无法决定：下限尚不存在，而按猜测钉死一张表会成为一个随部署而变、却没有可配置性支撑的常量。还有第二条轴随该下限一同确定，且不属于那四个读取点：本块在定义期会被求值的那些名字与语法。`TypedDict` 需要 3.8，PEP 585 的内建泛型 `dict[str, Any]` 与 `list[…]` 需要 3.9，`A | B` 形式的注解需要 3.10，`NotRequired` 需要 3.11。这些不是解析失败——本块在任何版本上都能解析，这正是 `MAX_LIST_NESTING` 上限所服务的标准——而是定义期求值失败，且产品中没有任何东西会求值这段文本。把它们与那四个读取点记在一起，可避免把「在所支持范围上可解析」读成「在其上可执行」。

.agents/notes/implemented/simplification/2026-08-06-user-bubbles-drop-the-branch-action.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/2026-08-06-user-bubbles-drop-the-branch-action.md
+2026-08-06-user-bubbles-drop-the-branch-action.md: 817b5e72b7e18b03ddb3a160e6f7a86b04f02764
+2026-08-06-user-bubbles-drop-the-branch-action.zh.md: dab3890818d872d7bbb3ac9bcab014ce9b829a61

.agents/notes/implemented/simplification/2026-08-06-user-bubbles-drop-the-branch-action.md

@@ -0,0 +1,27 @@
+# Agent Note: User and steering bubbles drop the branch action
+
+Status: implemented
+
+English | [中文](2026-08-06-user-bubbles-drop-the-branch-action.zh.md)
+
+## Problem
+
+Every user and consumed-steering bubble rendered the branch control under the completed-turn-tail gate of the [completed-turn-tail decision](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md). On those bubbles the gate is effectively permanent: a turn-opening user message is followed by its own turn's nodes, and a consumed steering message is mid-turn by construction, so the control could enable only when the turn ended with no node after the message at all — a cancel before the first model event. Readers therefore saw a control that never enables, with a tooltip promising a state the button cannot reach. The affordance also misled when read at all: a fork at a message seq cuts at the containing `turn/end`, so "branch at my message" includes the answer below it — the opposite of the branch-to-re-ask reading a control on one's own bubble suggests.
+
+## Decision
+
+User and steering bubbles render no branch action. `MessageItem` loses its fork props, `PendingSteeringBubble` loses its `showBranch` special case, and `messageBranchSeqs` narrows to `assistantBranchSeqs`: only a completed turn's transcript tail that is the turn's own content-text assistant may fork. The branch affordance lives solely under the settled answer.
+
+A turn containing a steer keeps its fork point unchanged: fork is a log-prefix cut at `turn/end`, and the steer is model-visible history the child must inherit, so the settled answer of a steered turn forks like any other. The assistant-side gate and its visible-but-unavailable presentation are also unchanged — under an answer, unavailable is a transient, reachable state (a trailing tool or error row currently owns the tail), which is exactly what the tooltip is for.
+
+## Alternatives considered
+
+**Hide the control on message bubbles only while ineligible.** Rejected: it preserves the near-unreachable enabled case at the cost of an icon that appears on one's own bubble only when a turn died before producing anything, an inconsistency not worth the case it serves.
+
+**Keep the visible-but-unavailable control (status quo).** Rejected: the [completed-turn-tail decision](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md) chose visibility so the tooltip could explain a boundary the reader can reach; on user and steering bubbles the boundary is unreachable in practice, so the explanation props up a control that should not exist there.
+
+**Branch-before-the-message semantics on user bubbles.** Out of scope: re-asking from one's own prompt needs a cut before the message plus composer prefill, a different Host operation. Removing the current control keeps that seat free for such a feature instead of squatting on it with opposite semantics.
+
+## Consequences
+
+The only fork handles are the enabled branch controls under settled answers. A turn cancelled before any node followed its message loses its only handle and has no fork point, matching turns whose tail is a content-free interrupted node. Web aria goldens across `apps/web` drop the user-bubble disabled-branch row and its hidden explanation text. Package tests pin that user and steering bubbles render no branch control and that a steering-tail turn leaves the narration's control unavailable.

.agents/notes/implemented/simplification/2026-08-06-user-bubbles-drop-the-branch-action.zh.md

@@ -0,0 +1,27 @@
+# Agent Note：user 与 steering 气泡移除分支操作
+
+Status: implemented
+
+[English](2026-08-06-user-bubbles-drop-the-branch-action.md) | 中文
+
+## 问题
+
+每个 user 气泡和已消费的 steering（中途引导）气泡都渲染分支控件，受[已完成轮次尾部决策](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md)的门禁约束。在这些气泡上，该门禁实际上是永久性的：开轮的 user 消息后面必然跟着本轮自己的节点，已消费的 steering 消息按构造就处在轮次中间，因此只有当轮次结束时该消息之后一个节点都没有——即在第一个模型事件之前就取消——控件才可能启用。读者因此看到一个永远不会启用的控件，tooltip 许诺的是这个按钮到达不了的状态。这个操作入口本身也有误导：在消息 seq 处 fork 会切在所在轮次的 `turn/end`，"在我的消息处分支"实际会把下方的回答一并带走，与在自己气泡上看到分支时"分叉重问"的直觉预期恰好相反。
+
+## 决策
+
+user 与 steering 气泡不再渲染分支操作。`MessageItem` 移除其 fork props，`PendingSteeringBubble` 移除其 `showBranch` 特例，`messageBranchSeqs` 收窄为 `assistantBranchSeqs`：只有已完成轮次的 transcript 尾部、且该尾部是本轮自己的带 text 内容 assistant 节点才可 fork。分支入口只存在于已定稿的回答之下。
+
+含有 steer 的轮次的 fork 点保持不变：fork 是切在 `turn/end` 上的日志前缀，steer 是子会话必须继承的模型可见历史，因此被引导过的轮次的已定稿回答与其他轮次一样可以 fork。assistant 侧的门禁及其可见但不可用的呈现也保持不变——在回答之下，不可用是一个短暂且可到达的状态（当前尾部被后续工具行或错误行占据），这正是 tooltip 的用武之地。
+
+## 考虑过的替代方案
+
+**仅在不可用时隐藏消息气泡上的控件。** 否决：它保住了那个几乎不可达的启用场景，代价是图标只在轮次尚未产出任何东西就中止时才出现在自己的气泡上，这种不一致不值得为它服务的场景付出。
+
+**保留可见但不可用的控件（现状）。** 否决：[已完成轮次尾部决策](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md)选择可见，是为了让 tooltip 解释一个读者可以到达的边界；在 user 与 steering 气泡上这个边界实际不可达，解释文本是在为一个不该存在于此的控件打补丁。
+
+**在 user 气泡上采用切在消息之前的分支语义。** 不在本次范围内：从自己的提示词重问需要切在消息之前并预填输入框，是另一个 Host 操作。移除当前控件恰好为这样的功能留出位置，而不是让语义相反的控件占着它。
+
+## 后果
+
+唯一的 fork 入口是已定稿回答下方启用的分支控件。在任何节点跟上其消息之前就被取消的轮次失去了它唯一的入口，从此没有 fork 点，与尾部是无内容 interrupted 节点的轮次一致。`apps/web` 的 aria golden 全部移除 user 气泡的禁用分支行及其隐藏说明文本。包测试钉住：user 与 steering 气泡不渲染分支控件，steering 作为尾部的轮次让叙述节点的控件保持不可用。

apps/web/tests/assembled-boot.ts

@@ -0,0 +1,133 @@
+// Shared scaffolding for the assembled-jsdom snapshots: the real built
+// `packages/client/*/lib/client.js` artifacts booted through AppWebEntry's
+// ModuleLoader path (loadBundle) against the keyless FixtureApiClient
+// transport. Every file that mounts this graph needs the same boot entry list,
+// the same bundle map, the same jsdom globals, and the same mount call, and
+// differs only in what it asserts afterwards, so the scaffolding lives here.
+//
+// Keyless and deterministic: the fixture is the fake server, so nothing here
+// reaches a model or the network.
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { act, cleanup } from '@testing-library/react'
+import { afterEach, beforeEach, vi } from 'vitest'
+import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
+import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+
+/** Boot entries for the minimal assembled graph, each carrying the workspace directory its bundle is read from. */
+const PLUGINS: readonly (WebBootEntry & { dir: string })[] = [
+  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', url: '/plugins/connection.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', url: '/plugins/runtime.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', url: '/plugins/ui-theme.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-locale', dir: 'locale', url: '/plugins/locale.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-layout', dir: 'ui-layout', url: '/plugins/ui-layout.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-runtime'] },
+  { id: '@deepseek-ai/dsh-client-ui-sidebar', dir: 'ui-sidebar', url: '/plugins/ui-sidebar.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', url: '/plugins/ui-conversation.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  {
+    id: '@deepseek-ai/dsh-client-ui-workspace',
+    dir: 'ui-workspace',
+    url: '/plugins/ui-workspace.js',
+    rev: 'fx',
+    inject: [
+      '@deepseek-ai/dsh-client-runtime',
+      '@deepseek-ai/dsh-client-ui-conversation',
+      '@deepseek-ai/dsh-client-ui-sidebar',
+    ],
+  },
+  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', url: '/plugins/ui-trajectory.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
+]
+
+const bundles = new Map(PLUGINS.map(plugin => [
+  plugin.url,
+  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
+]))
+
+interface FixtureWindow extends Window {
+  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
+  __ModuleLoader__?: unknown
+}
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+const win = window as FixtureWindow
+let unmount: (() => void) | undefined
+
+/**
+ * Register the per-test jsdom setup and teardown the assembled boot needs:
+ * English pinned before boot so role/text locators stay deterministic across
+ * localized component migrations (the newEnglishPage e2e convention), the
+ * observers and frame callbacks jsdom lacks, and a full reset of the document,
+ * the boot globals, and the injected plugin styles afterwards.
+ */
+export function installAssembledBootEnv(): void {
+  beforeEach(() => {
+    localStorage.clear()
+    localStorage.setItem('dsh.locale', 'en')
+    document.title = 'DeepSeek Harness'
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      setTimeout(() => { callback(0) }, 0) as unknown as number)
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+  })
+
+  afterEach(() => {
+    act(() => { unmount?.() })
+    unmount = undefined
+    cleanup()
+    delete win.__DSH_BOOT__
+    delete win.__ModuleLoader__
+    document.body.innerHTML = ''
+    document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    document.title = ''
+    history.replaceState(null, '', '/')
+    vi.unstubAllGlobals()
+  })
+}
+
+/**
+ * Mount the assembled application on the fixture transport; the teardown
+ * registered by installAssembledBootEnv disposes it.
+ */
+export function mountAssembledApp(): void {
+  history.replaceState(null, '', '/?fixture')
+  const root = document.createElement('div')
+  root.id = 'root'
+  document.body.appendChild(root)
+  win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
+  act(() => {
+    const entry = new AppWebEntry(root, {
+      loadBundle: async (url) => {
+        const code = bundles.get(url)
+        if (code === undefined) throw new Error(`missing built bundle ${url}`)
+        ;(0, eval)(code)
+      },
+    })
+    void entry.run()
+    unmount = () => { entry.dispose() }
+  })
+}
+
+/**
+ * Match a CSS-module class by its logical name.
+ * Module class names carry a per-build hash in one of two schemes —
+ * ui-primitives emits `_<name>_<hash>` (name bounded by underscores),
+ * ui-conversation emits `<hash>_<name>` (name at the end) — and a longer name
+ * containing this one must not match (`line` must not hit `lineNumber`).
+ * @param el - element whose class list is inspected.
+ * @param name - logical (unhashed) module class name.
+ * @returns whether the element carries that module class.
+ */
+export function hasClass(el: Element, name: string): boolean {
+  return [...el.classList].some(cls => cls === name || cls.endsWith(`_${name}`) || cls.startsWith(`_${name}_`) || cls.includes(`_${name}_`))
+}
+
+/**
+ * Whether this run rewrites its golden instead of comparing against it, set by
+ * the snapshot gate's `DSH_SNAPSHOT` mode (`record` re-runs the scenarios from
+ * scratch, `refresh` re-derives the expected text from the existing ones).
+ */
+export const REFRESHING_GOLDEN = process.env.DSH_SNAPSHOT === 'record' || process.env.DSH_SNAPSHOT === 'refresh'

apps/web/tests/built-boot.snapshot.ts

@@ -1,105 +1,23 @@
 // @vitest-environment jsdom
-// The built-bundle boot smoke: the ONE assembled-jsdom test that loads the
-// real `packages/client/*/lib/client.js` artifacts through AppWebEntry's
-// ModuleLoader path (loadBundle) and proves the boot graph
-// assembles — staged activation across the immediately tier and the inject
-// layers, per-plugin CSS injection, and a rendered journey reaching chat
-// content from the keyless FixtureApiClient transport.
+// The built-bundle boot smoke: the assembled-jsdom test that owns the boot
+// graph itself. Other files share the same scaffolding (assembled-boot.ts) to
+// reach a surface only the built bundles expose; this one asserts that the
+// graph assembles at all — staged activation across the immediately tier and
+// the inject layers, per-plugin CSS injection, and a rendered journey reaching
+// chat content from the keyless FixtureApiClient transport.
 //
 // Component behavior remains owned by per-package suites (SlotTestRuntime
 // benches over src). This smoke additionally pins the resident interaction
 // fixture's cross-plugin projection because only the built connection/runtime/
 // workspace graph can prove that transport-to-row path end to end.
-import { readFileSync } from 'node:fs'
-import { join } from 'node:path'
-import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
-import { afterEach, beforeEach, expect, it, vi } from 'vitest'
-import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
-import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+import { act, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { expect, it } from 'vitest'
+import { installAssembledBootEnv, mountAssembledApp } from './assembled-boot.ts'
 
-const PLUGINS: readonly (WebBootEntry & { dir: string })[] = [
-  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', url: '/plugins/connection.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', url: '/plugins/runtime.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
-  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', url: '/plugins/ui-theme.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-locale', dir: 'locale', url: '/plugins/locale.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-ui-layout', dir: 'ui-layout', url: '/plugins/ui-layout.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-runtime'] },
-  { id: '@deepseek-ai/dsh-client-ui-sidebar', dir: 'ui-sidebar', url: '/plugins/ui-sidebar.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
-  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', url: '/plugins/ui-conversation.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
-  {
-    id: '@deepseek-ai/dsh-client-ui-workspace',
-    dir: 'ui-workspace',
-    url: '/plugins/ui-workspace.js',
-    rev: 'fx',
-    inject: [
-      '@deepseek-ai/dsh-client-runtime',
-      '@deepseek-ai/dsh-client-ui-conversation',
-      '@deepseek-ai/dsh-client-ui-sidebar',
-    ],
-  },
-  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', url: '/plugins/ui-trajectory.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
-]
-
-const bundles = new Map(PLUGINS.map(plugin => [
-  plugin.url,
-  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
-]))
-
-interface FixtureWindow extends Window {
-  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
-  __ModuleLoader__?: unknown
-}
-
-class ResizeObserverStub {
-  observe(): void {}
-  disconnect(): void {}
-  unobserve(): void {}
-}
-
-const win = window as FixtureWindow
-let unmount: (() => void) | undefined
-
-beforeEach(() => {
-  localStorage.clear()
-  // English pinned before boot: role/text locators stay deterministic across
-  // localized component migrations (the newEnglishPage e2e convention).
-  localStorage.setItem('dsh.locale', 'en')
-  document.title = 'DeepSeek Harness'
-  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
-  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
-    setTimeout(() => { callback(0) }, 0) as unknown as number)
-  vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
-})
-
-afterEach(() => {
-  act(() => { unmount?.() })
-  unmount = undefined
-  cleanup()
-  delete win.__DSH_BOOT__
-  delete win.__ModuleLoader__
-  document.body.innerHTML = ''
-  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
-  document.title = ''
-  history.replaceState(null, '', '/')
-  vi.unstubAllGlobals()
-})
+installAssembledBootEnv()
 
 it('boots the built plugin graph and renders a fixture session end to end', async () => {
-  history.replaceState(null, '', '/?fixture')
-  const root = document.createElement('div')
-  root.id = 'root'
-  document.body.appendChild(root)
-  win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
-  act(() => {
-    const entry = new AppWebEntry(root, {
-      loadBundle: async (url) => {
-        const code = bundles.get(url)
-        if (code === undefined) throw new Error(`missing built bundle ${url}`)
-        ;(0, eval)(code)
-      },
-    })
-    void entry.run()
-    unmount = () => { entry.dispose() }
-  })
+  mountAssembledApp()
 
   // The sidebar renders from the boot graph: every inject layer activated.
   const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })

apps/web/tests/goal-multi-turn-actions.e2e.ts

@@ -0,0 +1,168 @@
+// Keyless replay of a real two-round Goal run. Each autonomous round ends as
+// its own turn, so the first answer must keep its IconActions when Goal opens
+// round two and the final answer must own a second, distinct action row.
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent, SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-goal'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/goal-multi-turn-actions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const OVERRIDE = join(SNAPSHOT_DIR, 'replay.override.json')
+const UI_EXPECTED = join(SNAPSHOT_DIR, 'ui.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = '做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的'
+const COMMAND = `/goal ${PROMPT}`
+
+const PACKAGE_FILES: Readonly<Record<string, string>> = {
+  'packages/client/ui-conversation/README.md': '# UI conversation\n',
+  'packages/client/ui-conversation/package.json': '{"name":"@deepseek-ai/dsh-client-ui-conversation"}\n',
+  'packages/client/ui-conversation/src/client.ts': 'export {}\n',
+  'packages/client/ui-conversation/tests/chat-view.spec.tsx': 'export {}\n',
+  'packages/context/session-reference/README.md': '# Session reference\n',
+  'packages/context/session-reference/package.json': '{"name":"@deepseek-ai/dsh-session-reference"}\n',
+  'packages/context/session-reference/src/index.ts': 'export {}\n',
+  'packages/context/session-reference/src/uri.ts': 'export {}\n',
+  'packages/context/session-reference/tests/session-reference.spec.ts': 'export {}\n',
+  'packages/llm/token-meter/README.md': '# Token meter\n',
+  'packages/llm/token-meter/package.json': '{"name":"@deepseek-ai/dsh-token-meter"}\n',
+  'packages/llm/token-meter/src/index.ts': 'export {}\n',
+  'packages/llm/token-meter/tests/token-meter.spec.ts': 'export {}\n',
+  'packages/skill/skill-local/README.md': '# Local skill provider\n',
+  'packages/skill/skill-local/package.json': '{"name":"@deepseek-ai/dsh-skill-local"}\n',
+  'packages/skill/skill-local/src/index.ts': 'export {}\n',
+  'packages/skill/skill-local/src/invariant.ts': 'export {}\n',
+  'packages/skill/skill-local/tests/skill-local.spec.ts': 'export {}\n',
+}
+
+/** Materialize a stable package inventory inside the isolated session workspace. */
+async function seedPackageInventory(workspaceRoot: string): Promise<void> {
+  for (const [relativePath, content] of Object.entries(PACKAGE_FILES)) {
+    const path = join(workspaceRoot, 'workspace', relativePath)
+    await mkdir(dirname(path), { recursive: true })
+    await writeFile(path, content)
+  }
+}
+
+/** Await exactly the requested number of durable turn ends, then flush the session. */
+function whenTurnsSettled(scaffold: WebScaffold, count: number, timeoutMs: number): Promise<SessionId> {
+  return new Promise<SessionId>((resolve, reject) => {
+    let completed = 0
+    const timer = setTimeout(() => {
+      off()
+      reject(new Error(`only ${completed}/${count} Goal turns ended within ${timeoutMs}ms`))
+    }, timeoutMs)
+    const off = scaffold.ctx.on('session/event', (session, event: SessionEvent) => {
+      if (event.type !== 'turn/end') return
+      completed += 1
+      if (completed !== count) return
+      clearTimeout(timer)
+      off()
+      scaffold.ctx.sessions.flush(session).then(() => { resolve(session.id) }, reject)
+    })
+  })
+}
+
+/** Goal-owned round numbers in durable user-message order. */
+function goalRounds(events: readonly SessionEvent[]): number[] {
+  return events.flatMap(event => event.type === 'user/message' && event.data.source.kind === 'goal'
+    ? [event.data.source.round]
+    : [])
+}
+
+/** Objective written by each durable Goal creation. */
+function createdObjectives(events: readonly SessionEvent[]): string[] {
+  return events.flatMap(event => event.type === 'goal/change' && event.data.operation === 'create'
+    ? [event.data.goal.objective]
+    : [])
+}
+
+describe('web e2e: Goal keeps one assistant action row per completed turn', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+
+  afterEach(async () => {
+    const failures: unknown[] = []
+    await browser?.close().catch((error: unknown) => failures.push(error))
+    browser = undefined
+    const closing = scaffold
+    scaffold = undefined
+    await closing?.close().catch((error: unknown) => failures.push(error))
+    if (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'goal-multi-turn-actions teardown failed')
+  })
+
+  /** Boot the real Web composition and connect a fresh package fixture workspace. */
+  async function launch(): Promise<void> {
+    sessionEvents = []
+    scaffold = await launchWebScaffold(
+      MODE === 'record' ? {} : { replayFixture: FIXTURE, replayOverride: OVERRIDE },
+    )
+    await seedPackageInventory(scaffold.workspaceCwd)
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page, scaffold.workspaceCwd)
+  }
+
+  /** Submit the Goal command after arming the two-turn barrier. */
+  async function runGoal(timeoutMs: number): Promise<SessionId> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = whenTurnsSettled(scaffold!, 2, timeoutMs)
+    await input.fill(COMMAND)
+    await input.press('Enter')
+    return settled
+  }
+
+  it.skipIf(MODE !== 'record')('records the two-round Goal through the real model', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions-record'))
+    const sessionId = await runGoal(360_000)
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 380_000)
+
+  it.skipIf(MODE === 'record')('keeps actions on both completed Goal turn tails', async () => {
+    const fixtureEvents = parseSessionLog(await readFile(FIXTURE, 'utf8'))
+    expect(createdObjectives(fixtureEvents)).toEqual([PROMPT])
+    expect(goalRounds(fixtureEvents)).toEqual([1, 2])
+
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions'))
+    await runGoal(120_000)
+
+    expect(sessionEvents.flatMap(event => event.type === 'turn/end' ? [event.data.turn] : []))
+      .toEqual([1, 2])
+    expect(goalRounds(sessionEvents)).toEqual([1, 2])
+    const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
+    await expect.poll(() => branchButtons.count(), { timeout: 15_000 }).toBe(2)
+    expect(await branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))))
+      .toEqual([null, null])
+    await branchButtons.last().focus()
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 140_000)
+
+  it.skipIf(MODE === 'record')('keeps a closed fixture inventory', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['replay.override.json', 'session.jsonl', 'ui.expected.md'])
+  })
+})

apps/web/tests/message-actions.e2e.ts

@@ -107,17 +107,17 @@ 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). Every durable message footer keeps branch visible,
-    // but only the final assistant at a completed transcript tail enables it.
+    // hover/focus-within). Branch renders only under assistant answers — user
+    // bubbles carry none — and only a completed transcript tail enables it.
     const copyButtons = page.getByRole('button', { name: 'Copy' })
     await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(4)
     await copyButtons.first().focus()
     const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
-    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(4)
+    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(2)
     await expect.poll(
       () => branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))),
       { timeout: 5_000 },
-    ).toEqual(['true', 'true', 'true', null])
+    ).toEqual(['true', null])
     await branchButtons.first().focus()
     await expect.poll(() => page.getByRole('tooltip').textContent(), { timeout: 5_000 })
       .toBe('Available only on the last message of a completed turn')

apps/web/tests/search-card.snapshot.ts

@@ -14,69 +14,19 @@
 // derivation over the result view, pinned at every render site by the
 // ui-conversation suite; here the fixture turn exercises the assembled card
 // shape and its cap.
-import { mkdirSync, readFileSync, writeFileSync } from 'node:fs'
+import { mkdirSync, writeFileSync } from 'node:fs'
 import { dirname, join } from 'node:path'
-import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
-import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+import { act, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { describe, expect, it } from 'vitest'
+import { hasClass, installAssembledBootEnv, mountAssembledApp, REFRESHING_GOLDEN } from './assembled-boot.ts'
 
 const EXPECTED = join(process.cwd(), 'apps/web/tests/snapshots/search-card/grep-card.expected.txt')
-const refreshing = process.env.DSH_SNAPSHOT === 'record' || process.env.DSH_SNAPSHOT === 'refresh'
 
-const PLUGINS: readonly (WebBootEntry & { dir: string })[] = [
-  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', url: '/plugins/connection.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', url: '/plugins/runtime.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
-  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', url: '/plugins/ui-theme.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-locale', dir: 'locale', url: '/plugins/locale.js', rev: 'fx', inject: [], immediately: true },
-  { id: '@deepseek-ai/dsh-client-ui-layout', dir: 'ui-layout', url: '/plugins/ui-layout.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-runtime'] },
-  { id: '@deepseek-ai/dsh-client-ui-sidebar', dir: 'ui-sidebar', url: '/plugins/ui-sidebar.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
-  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', url: '/plugins/ui-conversation.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
-  {
-    id: '@deepseek-ai/dsh-client-ui-workspace',
-    dir: 'ui-workspace',
-    url: '/plugins/ui-workspace.js',
-    rev: 'fx',
-    inject: [
-      '@deepseek-ai/dsh-client-runtime',
-      '@deepseek-ai/dsh-client-ui-conversation',
-      '@deepseek-ai/dsh-client-ui-sidebar',
-    ],
-  },
-  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', url: '/plugins/ui-trajectory.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
-]
-
-const bundles = new Map(PLUGINS.map(plugin => [
-  plugin.url,
-  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
-]))
-
-interface FixtureWindow extends Window {
-  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
-  __ModuleLoader__?: unknown
-}
-
-class ResizeObserverStub {
-  observe(): void {}
-  disconnect(): void {}
-  unobserve(): void {}
-}
-
-const win = window as FixtureWindow
-let unmount: (() => void) | undefined
+installAssembledBootEnv()
 
 /** Normalize a rendered search card to a stable text shape: the kind, the banner
  *  summary, each file header (path + count), each visible match line, the expand
- *  control label, and the recovery footer. CSS-module class names carry a
- *  per-build hash in one of two schemes — ui-primitives emits `_<name>_<hash>`
- *  (name bounded by underscores), ui-conversation emits `<hash>_<name>` (name at
- *  the end). `hasClass` matches a module class by its logical name under either,
- *  without matching a longer name that contains it (`line` must not hit
- *  `lineNumber`). */
-function hasClass(el: Element, name: string): boolean {
-  return [...el.classList].some(cls => cls === name || cls.endsWith(`_${name}`) || cls.startsWith(`_${name}_`) || cls.includes(`_${name}_`))
-}
-
+ *  control label, and the recovery footer. */
 function cardShape(root: Element): string {
   const card = root.querySelector('[data-search]')
   if (card === null) return '<no search card>'
@@ -94,49 +44,9 @@ function cardShape(root: Element): string {
   return lines.join('\n')
 }
 
-beforeEach(() => {
-  localStorage.clear()
-  // English pinned before boot so the sidebar's role/text locators stay
-  // deterministic (the built-boot smoke's convention).
-  localStorage.setItem('dsh.locale', 'en')
-  document.title = 'DeepSeek Harness'
-  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
-  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
-    setTimeout(() => { callback(0) }, 0) as unknown as number)
-  vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
-})
-
-afterEach(() => {
-  act(() => { unmount?.() })
-  unmount = undefined
-  cleanup()
-  delete win.__DSH_BOOT__
-  delete win.__ModuleLoader__
-  document.body.innerHTML = ''
-  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
-  document.title = ''
-  history.replaceState(null, '', '/')
-  vi.unstubAllGlobals()
-})
-
 describe('assembled search card', () => {
   it('renders the grep card, its truncation summary, and its capped head/tail slice from the built bundles', async () => {
-    history.replaceState(null, '', '/?fixture')
-    const root = document.createElement('div')
-    root.id = 'root'
-    document.body.appendChild(root)
-    win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
-    act(() => {
-      const entry = new AppWebEntry(root, {
-        loadBundle: async (url) => {
-          const code = bundles.get(url)
-          if (code === undefined) throw new Error(`missing built bundle ${url}`)
-          ;(0, eval)(code)
-        },
-      })
-      void entry.run()
-      unmount = () => { entry.dispose() }
-    })
+    mountAssembledApp()
 
     const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
     fireEvent.click(await within(tree).findByText('Fixture 历史会话'))
@@ -161,7 +71,7 @@ describe('assembled search card', () => {
       expect(grepRow.querySelector('[data-search]')).not.toBeNull()
     }, { timeout: 10_000 })
     const shape = cardShape(grepRow)
-    if (refreshing) {
+    if (REFRESHING_GOLDEN) {
       mkdirSync(dirname(EXPECTED), { recursive: true })
       writeFileSync(EXPECTED, shape)
     }

apps/web/tests/snapshots/bash-abort-row/ui.expected.md

@@ -7,9 +7,6 @@
 - text: "Run two shell commands: wait for cancellation, then write skipped.txt. {{date}} {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/code-mode-round/ui.expected.md

@@ -7,9 +7,6 @@
 - 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. {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/cordis-tool-round/ui.expected.md

@@ -7,9 +7,6 @@
 - 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. {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/fresh-round-trip/ui.expected.md

@@ -7,9 +7,6 @@
 - text: "Use the bash tool to run exactly: echo WEB_E2E_OK. Then reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/goal-multi-turn-actions/replay.override.json

@@ -0,0 +1,52 @@
+{
+  "patches": [
+    {
+      "at": 2,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "argumentsDelta": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "arguments": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 156, "outputTokens": 202, "cacheReadTokens": 8448, "reasoningTokens": 80 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 7,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "argumentsDelta": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "arguments": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 62, "outputTokens": 164, "cacheReadTokens": 9728, "reasoningTokens": 46 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 10,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "text" },
+          { "type": "text-delta", "index": 0, "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" },
+          { "type": "block-end", "index": 0, "block": { "type": "text", "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_goal_complete", "name": "update_goal", "argumentsDelta": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_goal_complete", "name": "update_goal", "arguments": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 132, "outputTokens": 157, "cacheReadTokens": 10368, "reasoningTokens": 44 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    }
+  ]
+}

apps/web/tests/snapshots/goal-multi-turn-actions/session.jsonl

@@ -0,0 +1,183 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1786073817152,"cwd":"{{cwd}}/workspace"}
+{"type":"permission/preset","seq":0,"time":1786073817153,"data":{"preset":"workspace-write"}}
+{"type":"sandbox/mode","seq":1,"time":1786073817154,"data":{"mode":"workspace-write"}}
+{"type":"approval/policy","seq":2,"time":1786073817154,"data":{"policy":"ask"}}
+{"type":"command/run","seq":3,"time":1786073817205,"data":{"commandId":"cmd-fc52d8e6-1","name":"goal","args":" 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的","source":{"kind":"user"}}}
+{"type":"goal/change","seq":4,"time":1786073817206,"data":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"objective":"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的","phase":"active","maxGoalRounds":256},"roundsStarted":0,"createdAt":1786073817206,"updatedAt":1786073817206}}
+{"type":"command/done","seq":5,"time":1786073817207,"data":{"commandId":"cmd-fc52d8e6-1","kind":"success","text":"Goal created\nStatus: active\nObjective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\nRounds: 0/256\nActivation: armed\n\nCommands: /goal edit <objective>, /goal pause, /goal clear"}}
+{"type":"agent/inbox/spliced","seq":6,"time":1786073817217,"data":{"target":"next-turn","start":0,"inserted":[{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"}]}}
+{"type":"turn/start","seq":7,"time":1786073817218,"data":{"turn":1}}
+{"type":"agent/inbox/spliced","seq":8,"time":1786073817218,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":9,"time":1786073817223,"data":{"turn":1,"step":1}}
+{"type":"user/message","seq":10,"time":1786073817223,"data":{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"},"surfaceOp":"append"}
+{"type":"user/message","seq":11,"time":1786073817223,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"99d1946b-5e77-4742-9da6-3aba0b45b031"},"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":260,"time":1786073821014,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\"\n\nSo this is round 1 of 2. I need to output the file structure of a random package. Let me check the workspace to see if there's anything relevant — maybe there are packages installed or a specific context.\n\nLet me first check the current working directory and see what's there.\n\nThe instruction says: after finishing a turn, output the content directly and stop. So for this round, I should pick a random package and output its file structure. The system will open another turn for the second one.\n\nLet me look at the workspace to understand the environment."}}}}
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+{"type":"assistant/message","seq":265,"time":1786073821020,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\"\n\nSo this is round 1 of 2. I need to output the file structure of a random package. Let me check the workspace to see if there's anything relevant — maybe there are packages installed or a specific context.\n\nLet me first check the current working directory and see what's there.\n\nThe instruction says: after finishing a turn, output the content directly and stop. So for this round, I should pick a random package and output its file structure. The system will open another turn for the second one.\n\nLet me look at the workspace to understand the environment."},{"type":"tool-call","id":"call_00_IVvwEvXl7JJoIHrqvlDi1572","name":"bash","arguments":"{\"command\": \"pwd && ls -la\", \"description\": \"Show working directory and its contents\"}"},{"type":"tool-call","id":"call_01_hlqFt1P4CYy1jb078Ke71690","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fae578c0-1183-4482-9b57-f8b5091f8646"},"usage":{"inputTokens":7893,"outputTokens":297,"cacheReadTokens":0,"reasoningTokens":213}},"sourceEventSeqs":[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],"surfaceOp":"append"}
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+{"type":"agent/inbox/spliced","seq":1745,"time":1786073844590,"data":{"target":"next-step","start":0,"inserted":[{"content":[{"type":"text","text":"<goal_complete>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nThe goal is marked complete and this autonomous run is ending. Write the closing message to the user now: state the outcome, summarize what was done and how it was verified, and point to the concrete results (files, commits, or other artifacts). Report only what earlier rounds and tool results in this session actually establish; when a detail is not in the session, say so instead of inventing it. Note anything the user should review or do next. Address the user directly. Do not call any more tools in this run; further work waits for the user's next instruction.\n</goal_complete>"}],"source":{"kind":"plugin","plugin":"tool-goal","form":"notice","summary":"complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"},"role":"user","id":"34261fc8-220c-40c0-819d-c9c0332bf965"}]}}
+{"type":"step/end","seq":1746,"time":1786073844591,"data":{"turn":2,"step":5}}
+{"type":"agent/inbox/spliced","seq":1747,"time":1786073844591,"data":{"target":"next-step","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":1748,"time":1786073844598,"data":{"turn":2,"step":6}}
+{"type":"user/message","seq":1749,"time":1786073844598,"data":{"content":[{"type":"text","text":"<goal_complete>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nThe goal is marked complete and this autonomous run is ending. Write the closing message to the user now: state the outcome, summarize what was done and how it was verified, and point to the concrete results (files, commits, or other artifacts). Report only what earlier rounds and tool results in this session actually establish; when a detail is not in the session, say so instead of inventing it. Note anything the user should review or do next. Address the user directly. Do not call any more tools in this run; further work waits for the user's next instruction.\n</goal_complete>"}],"source":{"kind":"plugin","plugin":"tool-goal","form":"notice","summary":"complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"},"role":"user","id":"34261fc8-220c-40c0-819d-c9c0332bf965"},"surfaceOp":"append"}
+{"type":"assistant/chunk","seq":1750,"time":1786073845862,"data":{"turn":2,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
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+{"type":"assistant/chunk","seq":2092,"time":1786073848306,"data":{"turn":2,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"两个 turn 都完成了 ✅\n\n**总结：**\n\n- **Turn 1** — 随机选中 `packages/context/session-reference`，输出了文件结构：\n  ```\n  session-reference/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   ├── index.ts\n  │   └── uri.ts\n  └── tests/\n      └── session-reference.spec.ts\n  ```\n- **Turn 2** — 随机选中 `packages/llm/token-meter`，输出了文件结构：\n  ```\n  token-meter/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   └── index.ts\n  └── tests/\n      └── token-meter.spec.ts\n  ```\n\n**验证方式：** 两个包的随机选择都通过 `python3 random.choice` 从工作区的 `packages/` 目录下实际枚举的 4 个候选包中抽取（`ui-conversation`、`session-reference`、`token-meter`、`skill-local`），文件结构则用 `find` 实际列出文件后整理输出，均已排除 `node_modules` 和 `.git`。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。\n\n**说明：** 本轮没有产生任何文件修改或提交——任务本身就是\"输出文件结构\"，所有产物都在上面的消息文本里。\n\n如果你还想看剩下两个包（`ui-conversation`、`skill-local`）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。"}}}}
+{"type":"assistant/chunk","seq":2093,"time":1786073848307,"data":{"turn":2,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":311,"outputTokens":348,"cacheReadTokens":10624,"reasoningTokens":0}}}}
+{"type":"assistant/chunk","seq":2094,"time":1786073848307,"data":{"turn":2,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":2095,"time":1786073848307,"data":{"turn":2,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"两个 turn 都完成了 ✅\n\n**总结：**\n\n- **Turn 1** — 随机选中 `packages/context/session-reference`，输出了文件结构：\n  ```\n  session-reference/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   ├── index.ts\n  │   └── uri.ts\n  └── tests/\n      └── session-reference.spec.ts\n  ```\n- **Turn 2** — 随机选中 `packages/llm/token-meter`，输出了文件结构：\n  ```\n  token-meter/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   └── index.ts\n  └── tests/\n      └── token-meter.spec.ts\n  ```\n\n**验证方式：** 两个包的随机选择都通过 `python3 random.choice` 从工作区的 `packages/` 目录下实际枚举的 4 个候选包中抽取（`ui-conversation`、`session-reference`、`token-meter`、`skill-local`），文件结构则用 `find` 实际列出文件后整理输出，均已排除 `node_modules` 和 `.git`。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。\n\n**说明：** 本轮没有产生任何文件修改或提交——任务本身就是\"输出文件结构\"，所有产物都在上面的消息文本里。\n\n如果你还想看剩下两个包（`ui-conversation`、`skill-local`）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5a1daadd-6f23-49ea-980b-6f96f67e3f52"},"usage":{"inputTokens":311,"outputTokens":348,"cacheReadTokens":10624,"reasoningTokens":0}},"sourceEventSeqs":[1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,1761,1762,1763,1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,1806,1807,1808,1809,1810,1811,1812,1813,1814,1815,1816,1817,1818,1819,1820,1821,1822,1823,1824,1825,1826,1827,1828,1829,1830,1831,1832,1833,1834,1835,1836,1837,1838,1839,1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1850,1851,1852,1853,1854,1855,1856,1857,1858,1859,1860,1861,1862,1863,1864,1865,1866,1867,1868,1869,1870,1871,1872,1873,1874,1875,1876,1877,1878,1879,1880,1881,1882,1883,1884,1885,1886,1887,1888,1889,1890,1891,1892,1893,1894,1895,1896,1897,1898,1899,1900,1901,1902,1903,1904,1905,1906,1907,1908,1909,1910,1911,1912,1913,1914,1915,1916,1917,1918,1919,1920,1921,1922,1923,1924,1925,1926,1927,1928,1929,1930,1931,1932,1933,1934,1935,1936,1937,1938,1939,1940,1941,1942,1943,1944,1945,1946,1947,1948,1949,1950,1951,1952,1953,1954,1955,1956,1957,1958,1959,1960,1961,1962,1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026,2027,2028,2029,2030,2031,2032,2033,2034,2035,2036,2037,2038,2039,2040,2041,2042,2043,2044,2045,2046,2047,2048,2049,2050,2051,2052,2053,2054,2055,2056,2057,2058,2059,2060,2061,2062,2063,2064,2065,2066,2067,2068,2069,2070,2071,2072,2073,2074,2075,2076,2077,2078,2079,2080,2081,2082,2083,2084,2085,2086,2087,2088,2089,2090,2091,2092,2093,2094],"surfaceOp":"append"}
+{"type":"step/end","seq":2096,"time":1786073848308,"data":{"turn":2,"step":6}}
+{"type":"turn/end","seq":2097,"time":1786073848308,"data":{"turn":2,"reason":{"kind":"completed"}}}

apps/web/tests/snapshots/goal-multi-turn-actions/ui.expected.md

@@ -0,0 +1,200 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "workspace" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- 'button "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"':
+  - img
+  - img
+  - text: "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- 'button "Think The user''s goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""':
+  - img
+  - img
+  - text: "Think The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""
+- button "Bash Show working directory and its contents":
+  - img
+  - img
+  - text: Bash Show working directory and its contents
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- 'button "Think There''s a `packages` directory. Let me look inside to see what packages are available."':
+  - img
+  - img
+  - text: "Think There's a `packages` directory. Let me look inside to see what packages are available."
+- button "Bash List packages directory contents":
+  - img
+  - img
+  - text: Bash List packages directory contents
+- button "Think There are 4 packages:":
+  - img
+  - img
+  - text: "Think There are 4 packages:"
+- button "Failed Bash Randomly pick one package directory":
+  - img
+  - text: Failed Bash Randomly pick one package directory
+- 'button "Think shuf is not available on macOS. I''ll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."':
+  - img
+  - img
+  - text: "Think shuf is not available on macOS. I'll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."
+- button "Bash Randomly select one package with Python":
+  - img
+  - img
+  - text: Bash Randomly select one package with Python
+- 'button "Think The random pick for turn 1 is `packages/context/session-reference`. Now I''ll output its file structure. Let me get the file tree."':
+  - img
+  - img
+  - text: "Think The random pick for turn 1 is `packages/context/session-reference`. Now I'll output its file structure. Let me get the file tree."
+- button "Bash List all files in session-reference package":
+  - img
+  - img
+  - text: Bash List all files in session-reference package
+- 'button "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."':
+  - img
+  - img
+  - text: "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."
+- paragraph:
+  - strong: Turn 1 / 2
+  - text: — 随机选中的包：
+  - code: packages/context/session-reference
+  - text: 📦
+- button "Copy"
+- code: session-reference ├── README.md ├── package.json ├── src │ ├── index.ts │ └── uri.ts └── tests └── session-reference.spec.ts
+- button "Copy"
+- code: "session-reference/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ ├── index.ts # 入口，导出公共 API │ └── uri.ts # 会话引用 URI 相关实现 └── tests/ └── session-reference.spec.ts # 单元测试"
+- paragraph: 这是一个很典型的轻量 TypeScript 包结构：入口 + 实现 + 测试。这一轮到此结束，等系统开启下一个 turn。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- 'button "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."
+- button "Bash Randomly select another package with Python":
+  - img
+  - img
+  - text: Bash Randomly select another package with Python
+- 'button "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."':
+  - img
+  - img
+  - text: "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."
+- button "Bash Re-roll excluding the package from turn 1":
+  - img
+  - img
+  - text: Bash Re-roll excluding the package from turn 1
+- button "Bash List all files in token-meter package":
+  - img
+  - img
+  - text: Bash List all files in token-meter package
+- 'button "Think This is turn 2 of 2. I''ve output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I've output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."
+- paragraph:
+  - strong: Turn 2 / 2
+  - text: — 随机选中的包：
+  - code: packages/llm/token-meter
+  - text: 📦
+- button "Copy"
+- code: token-meter ├── README.md ├── package.json ├── src │ └── index.ts └── tests └── token-meter.spec.ts
+- button "Copy"
+- code: "token-meter/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ └── index.ts # 入口，导出公共 API（token 计量逻辑） └── tests/ └── token-meter.spec.ts # 单元测试"
+- paragraph:
+  - text: 两个 turn 都完成了（turn 1：
+  - code: session-reference
+  - text: ，turn 2：
+  - code: token-meter
+  - text: ）。这一轮到此结束。
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- paragraph: 两个 turn 均已完成，目标达成，标记 goal 为完成。
+- button "Tool call update_goal · goal-{{uuid}}":
+  - img
+  - img
+  - text: Tool call update_goal · goal-{{uuid}}
+- 'button "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"':
+  - img
+  - img
+  - text: "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"
+- paragraph: 两个 turn 都完成了 ✅
+- paragraph:
+  - strong: 总结：
+- list:
+  - listitem:
+    - strong: Turn 1
+    - text: — 随机选中
+    - code: packages/context/session-reference
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: session-reference/ ├── README.md ├── package.json ├── src/ │ ├── index.ts │ └── uri.ts └── tests/ └── session-reference.spec.ts
+  - listitem:
+    - strong: Turn 2
+    - text: — 随机选中
+    - code: packages/llm/token-meter
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: token-meter/ ├── README.md ├── package.json ├── src/ │ └── index.ts └── tests/ └── token-meter.spec.ts
+- paragraph:
+  - strong: 验证方式：
+  - text: 两个包的随机选择都通过
+  - code: python3 random.choice
+  - text: 从工作区的
+  - code: packages/
+  - text: 目录下实际枚举的 4 个候选包中抽取（
+  - code: ui-conversation
+  - text: 、
+  - code: session-reference
+  - text: 、
+  - code: token-meter
+  - text: 、
+  - code: skill-local
+  - text: ），文件结构则用
+  - code: find
+  - text: 实际列出文件后整理输出，均已排除
+  - code: node_modules
+  - text: 和
+  - code: .git
+  - text: 。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。
+- paragraph:
+  - strong: 说明：
+  - text: 本轮没有产生任何文件修改或提交——任务本身就是"输出文件结构"，所有产物都在上面的消息文本里。
+- paragraph:
+  - text: 如果你还想看剩下两个包（
+  - code: ui-conversation
+  - text: 、
+  - code: skill-local
+  - text: ）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- tooltip "Branch into a new conversation"
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "9% of context used"
+- button "Send message" [disabled]
+- text: 2 turns · 12 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 91% Input 113K tok · Output 2.4K tok

apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with the single word LIGHTHOUSE and stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/live-interactions/cancel.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/live-interactions/error-auth.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/live-interactions/loading.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/live-interactions/retry.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/markdown-cjk-strong/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Render adjacent CJK strong emphasis. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - heading "CJK strong emphasis" [level=2]
 - paragraph:
   - strong: 注意：

apps/web/tests/snapshots/markdown-images/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Show the Markdown image policy. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - heading "Markdown images" [level=2]
 - paragraph:
   - img "Remote test image"

apps/web/tests/snapshots/markdown-inline-code-links/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Show the local preview URL. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - heading "Inline code links" [level=2]
 - paragraph:
   - text: "Preview:"

apps/web/tests/snapshots/math-rendering/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Render this mathematical proof. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - heading "Math rendering" [level=2]
 - paragraph:
   - text: Inline dollar

apps/web/tests/snapshots/message-actions/ui.expected.md

@@ -8,9 +8,6 @@
 - button "Copy":
   - img
 - tooltip "Copy"
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - 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
@@ -38,9 +35,6 @@
 - text: Stopped Now give the final answer. 7/25 {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - paragraph: DONE
 - button "Copy":
   - img

apps/web/tests/snapshots/plan-review/approved.expected.md

@@ -8,9 +8,6 @@
 - text: "plan Plan mode on. Use /plan off to leave. Interjection 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 "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/question-composer/answered.expected.md

@@ -7,9 +7,6 @@
 - text: "Use the ask_user_question tool to ask me exactly one multi-select 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.\" Set multi_select to true. After I answer, reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/queue-actions/collapsed.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/queue-actions/editing.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/queue-actions/preserved.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/queue-actions/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/seeded-history/command-row.expected.md

@@ -7,9 +7,6 @@
 - 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. 7/25 {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - 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

apps/web/tests/snapshots/seeded-history/ui.expected.md

@@ -7,9 +7,6 @@
 - 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. 7/25 {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - 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

apps/web/tests/snapshots/steering/mid-steer.expected.md

@@ -7,9 +7,6 @@
 - 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. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/snapshots/steering/settled.expected.md

@@ -7,9 +7,6 @@
 - 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. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
@@ -25,9 +22,6 @@
 - text: "Interjection Interjection: include the word BANANA in your final reply. {{clock}}"
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Think The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer.":
   - img
   - img

apps/web/tests/snapshots/subagent-conversation/nested.expected.md

@@ -11,8 +11,6 @@
 - text: Give one concrete event sourcing example. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation":
-  - img
 - status:
   - strong: This subagent is read-only for now
   - text: The parent session is offline; reopen it to continue sending messages.

apps/web/tests/snapshots/subagent-conversation/ui.expected.md

@@ -12,9 +12,6 @@
 - text: Explain event sourcing in one sentence. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
@@ -31,9 +28,6 @@
 - text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s Now give the same explanation to a human reader. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Think 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.":
   - img
   - img

apps/web/tests/snapshots/todo-row/parallel-plan.expected.txt

@@ -0,0 +1,9 @@
+row=todo_write
+title=Update to-do list
+summary=1/4 completed · 实现 fixture 样本
+suffix=+1
+panel=1 completed · 2 in progress · 1 pending
+item=completed 梳理需求
+item=in_progress 实现 fixture 样本
+item=in_progress 跑后台构建
+item=pending 浏览器验收

apps/web/tests/snapshots/turn-tail-actions/running.expected.md

@@ -0,0 +1,35 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- status: Deep diving...
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Stop generating"
+- text: 1 turns · 1 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok

apps/web/tests/snapshots/turn-tail-actions/session.jsonl

@@ -0,0 +1,36 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785918212891,"cwd":"{{cwd}}/workspace"}
+{"type":"permission/preset","seq":0,"time":1785918212892,"data":{"preset":"workspace-write"}}
+{"type":"sandbox/mode","seq":1,"time":1785918212893,"data":{"mode":"workspace-write"}}
+{"type":"approval/policy","seq":2,"time":1785918212893,"data":{"policy":"ask"}}
+{"type":"turn/start","seq":3,"time":1785918212945,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":4,"time":1785918212945,"data":{"content":[{"type":"text","text":"Begin your reply with the plain sentence \"Reading the workspace now.\" as text, and in that same message call the bash tool with the command \"echo alpha\". After the tool result, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"4dcaa766-7ea2-4c6a-84cb-0d6ab53b5fb4"},"surfaceOp":"append"}
+{"type":"session/title","seq":5,"time":1785918212946,"data":{"title":"Begin your reply with the","messageSeqs":[4],"source":{"kind":"fallback"}}}
+{"type":"user/message","seq":6,"time":1785918212956,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"60b8851a-888c-4d7e-9513-7d845f8d769b"},"surfaceOp":"append"}
+{"type":"step/start","seq":7,"time":1785918212956,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":8,"time":1785918212957,"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":"request/context","seq":9,"time":1785918212958,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":1000000}}
+{"type":"assistant/chunk","seq":10,"time":1785918214389,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":11,"time0":1785918214390,"data":{"turn":1,"step":1,"index":0,"dt":[101,1,0,0,0,56,1,0,0,0,0,0,0,72,1,0,0,0,0,29,0,0,0,0,35,1,0,17,39,0,0,0,0,0,31,0,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," begin"," with"," \"","Reading"," the"," workspace"," now",".\""," and"," call"," bash"," with"," \"","echo"," alpha","\""," in"," the"," same"," message","."," Then"," after"," the"," tool"," result",","," reply"," with"," the"," single"," word"," D","ONE"," and"," stop","."]}}
+{"type":"assistant/chunk","seq":53,"time":1785918214774,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"text-chunks","seq0":54,"time0":1785918214774,"data":{"turn":1,"step":1,"index":1,"dt":[0,0,0,48],"texts":["Reading"," the"," workspace"," now","."]}}
+{"type":"assistant/chunk","seq":59,"time":1785918214841,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":2,"blockType":"tool-call"}}}
+{"type":"tool-call-chunks","seq0":60,"time0":1785918214842,"data":{"turn":1,"step":1,"index":2,"dt":[28,0,0,0,0,25,0,0,0,52,1,0,0,0,25,0,0,1,15,0,25],"id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","args":["","{","\"","command","\"",": ","\"","echo"," alpha","\"",", ","\"","description","\"",": ","\"","Print"," alpha"," to"," stdout","\"","}"]}}
+{"type":"assistant/chunk","seq":82,"time":1785918215056,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."}}}}
+{"type":"assistant/chunk","seq":83,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Reading the workspace now."}}}}
+{"type":"assistant/chunk","seq":84,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":2,"block":{"type":"tool-call","id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}}}}
+{"type":"assistant/chunk","seq":85,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":7788,"outputTokens":109,"cacheReadTokens":0,"reasoningTokens":42}}}}
+{"type":"assistant/chunk","seq":86,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":87,"time":1785918215061,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."},{"type":"text","text":"Reading the workspace now."},{"type":"tool-call","id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"73708391-4b5f-429e-b71c-ef2114244a95"},"usage":{"inputTokens":7788,"outputTokens":109,"cacheReadTokens":0,"reasoningTokens":42}},"sourceEventSeqs":[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],"surfaceOp":"append"}
+{"type":"tool/call","seq":88,"time":1785918215062,"data":{"turn":1,"step":1,"callId":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}}
+{"type":"tool/result","seq":89,"time":1785918215096,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_1yZGg4XTqe0N5r1rnDLx5082"},"content":[{"type":"tool-result","toolCallId":"call_00_1yZGg4XTqe0N5r1rnDLx5082","content":[{"type":"text","text":"alpha\n"}],"isError":false}],"role":"user","id":"8b7ad694-b19e-4728-a804-eef9f53820b9"}},"sourceEventSeqs":[88],"surfaceOp":"append"}
+{"type":"step/end","seq":90,"time":1785918215097,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":91,"time":1785918215106,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":92,"time":1785918216259,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":93,"time":1785918216259,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"D"}}}
+{"type":"assistant/chunk","seq":94,"time":1785918216288,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"ONE"}}}
+{"type":"assistant/chunk","seq":95,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":96,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":103,"outputTokens":3,"cacheReadTokens":7808,"reasoningTokens":0}}}}
+{"type":"assistant/chunk","seq":97,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":98,"time":1785918216289,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fbb5a6d0-9945-4b52-ad15-978173d450a7"},"usage":{"inputTokens":103,"outputTokens":3,"cacheReadTokens":7808,"reasoningTokens":0}},"sourceEventSeqs":[92,93,94,95,96,97],"surfaceOp":"append"}
+{"type":"step/end","seq":99,"time":1785918216289,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":100,"time":1785918216289,"data":{"turn":1,"reason":{"kind":"completed"}}}

apps/web/tests/snapshots/turn-tail-actions/settled.expected.md

@@ -0,0 +1,40 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- text: Stopped
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Send message" [disabled]
+- text: 1 turns · 2 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok

apps/web/tests/snapshots/web-search-round/ui.expected.md

@@ -7,9 +7,6 @@
 - text: Use web_search to search exactly "DeepSeek Harness snapshot search". Then reply exactly SEARCH_DONE and stop. {{clock}}
 - button "Copy":
   - img
-- button "Branch into a new conversation" [disabled]:
-  - img
-- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img

apps/web/tests/todo-row.snapshot.ts

@@ -0,0 +1,71 @@
+// @vitest-environment jsdom
+// Assembled todo snapshot: boots the real built `packages/client/*/lib/
+// client.js` bundles through AppWebEntry's ModuleLoader path against the
+// keyless FixtureApiClient transport, opens the fixture session, and pins the
+// two surfaces the fixture's parallel plan (turn 71, two items `in_progress`)
+// reaches — the `todo_write` tool row and the dock's plan strip.
+//
+// The row is pinned as three separate fields on purpose. `summary=` is the
+// ellipsized text and `suffix=` is ToolRow's non-shrinking `summarySuffix`
+// slot, so a regression that folds the `+N` count back into the summary string
+// changes this file even though the concatenated text would read the same; the
+// jsdom package suites bench over src and cannot see the bundled registration.
+import { mkdirSync, writeFileSync } from 'node:fs'
+import { dirname, join } from 'node:path'
+import { fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { describe, expect, it } from 'vitest'
+import { hasClass, installAssembledBootEnv, mountAssembledApp, REFRESHING_GOLDEN } from './assembled-boot.ts'
+
+const EXPECTED = join(process.cwd(), 'apps/web/tests/snapshots/todo-row/parallel-plan.expected.txt')
+
+installAssembledBootEnv()
+
+/** Normalize the todo row and the plan strip to a stable text shape: the row's
+ *  title, its truncatable summary, its non-shrinking suffix, then the panel's
+ *  per-status header and every list item with its status. */
+function todoShape(row: Element, panel: Element): string {
+  const pick = (from: Element, name: string): Element[] =>
+    [...from.querySelectorAll('*')].filter(el => hasClass(el, name))
+  const first = (from: Element, name: string): string =>
+    pick(from, name)[0]?.textContent?.trim() ?? '<absent>'
+  const items = [...panel.querySelectorAll('[data-status]')]
+    .map(item => `item=${item.getAttribute('data-status')} ${item.textContent?.trim() ?? ''}`)
+  return [
+    `row=${row.getAttribute('data-tool')}`,
+    `title=${first(row, 'title')}`,
+    `summary=${first(row, 'summary')}`,
+    `suffix=${first(row, 'summarySuffix')}`,
+    `panel=${first(panel, 'progress')}`,
+    ...items,
+  ].join('\n')
+}
+
+describe('assembled todo surfaces', () => {
+  it('renders the parallel plan as a row summary, a separate active count, and the dock plan strip', async () => {
+    mountAssembledApp()
+
+    const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
+    fireEvent.click(await within(tree).findByText('Fixture 历史会话'))
+    // The todo turn is the fixture's last, so wait for its keyed row rather
+    // than for chat content in general.
+    const row = await waitFor(() => {
+      const found = document.querySelector('[data-tool="todo_write"]')
+      expect(found).not.toBeNull()
+      return found!
+    }, { timeout: 10_000 })
+    // The panel is the standing plan the turn's `todo/write` event feeds; it
+    // mounts above the composer, outside the row, and starts collapsed — its
+    // list only exists once expanded.
+    const panel = await screen.findByTestId('todo-panel', undefined, { timeout: 10_000 })
+    const toggle = panel.querySelector('button[aria-expanded]')
+    if (toggle === null) throw new Error('the plan strip must expose its expand toggle')
+    if (toggle.getAttribute('aria-expanded') === 'false') fireEvent.click(toggle)
+
+    const shape = todoShape(row, panel)
+    if (REFRESHING_GOLDEN) {
+      mkdirSync(dirname(EXPECTED), { recursive: true })
+      writeFileSync(EXPECTED, shape)
+    }
+    await expect(shape).toMatchFileSnapshot(EXPECTED)
+  })
+})

apps/web/tests/turn-tail-actions.e2e.ts

@@ -0,0 +1,152 @@
+// Web e2e scenario: assistant IconActions belong to the settled answer, so
+// they arrive with `turn/end` and not before. The recorded turn narrates in
+// plain text before its tool call, which is the shape that used to hand the
+// footer to mid-turn narration for the seconds a tool runs and then move it
+// down. A `hang` sidecar on the SECOND model call parks the turn after the
+// narration and the tool result are durable, so the running state is stable by
+// construction rather than by timing; stopping from that park writes the
+// `turn/end` that hands the footer to the turn's transcript tail.
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { existsSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import type { ReplayOverrideDoc } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/turn-tail-actions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// Two goldens for the same message: parked mid-turn, then settled.
+const RUNNING_EXPECTED = join(SNAPSHOT_DIR, 'running.expected.md')
+const SETTLED_EXPECTED = join(SNAPSHOT_DIR, 'settled.expected.md')
+const MODE = webSnapshotMode()
+
+// The recording must carry text in the SAME assistant message as the tool
+// call; a Think-only step would leave nothing for the footer to attach to and
+// the scenario would pass against either implementation.
+const NARRATION = 'Reading the workspace now.'
+const PROMPT = `Begin your reply with the plain sentence "${NARRATION}" as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop.`
+
+describe('web e2e: assistant IconActions wait for the turn to end', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+  let sidecarDir: string | undefined
+
+  afterEach(async () => {
+    // close() carries the fixture-consumption tripwire, so its failure is the
+    // scenario's failure; run every teardown step, then rethrow what failed.
+    const failures: unknown[] = []
+    await browser?.close().catch((error: unknown) => failures.push(error))
+    browser = undefined
+    const closing = scaffold
+    scaffold = undefined
+    await closing?.close().catch((error: unknown) => failures.push(error))
+    if (sidecarDir !== undefined) await rm(sidecarDir, { recursive: true, force: true }).catch((error: unknown) => failures.push(error))
+    sidecarDir = undefined
+    if (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'turn-tail-actions teardown failed')
+  })
+
+  /** Boot scaffold + page, materializing the sidecar before the replay row installs. */
+  async function launch(buildOverride?: (sidecarHome: string) => ReplayOverrideDoc): Promise<void> {
+    sessionEvents = []
+    let overridePath: string | undefined
+    if (buildOverride !== undefined) {
+      sidecarDir = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sidecar-'))
+      overridePath = join(sidecarDir, 'replay.override.json')
+      await writeFile(overridePath, JSON.stringify(buildOverride(sidecarDir)))
+    }
+    scaffold = await launchWebScaffold(
+      MODE === 'record'
+        ? {}
+        : { replayFixture: FIXTURE, ...(overridePath === undefined ? {} : { replayOverride: overridePath }) },
+    )
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page, scaffold.workspaceCwd)
+  }
+
+  /** Send the recorded prompt with the settled barrier pre-armed (returned wrapped so the caller can act mid-turn). */
+  async function sendPrompt(timeoutMs?: number): Promise<{ settled: ReturnType<WebScaffold['whenTurnSettled']> }> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold!.whenTurnSettled(timeoutMs)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    return { settled }
+  }
+
+  it.skipIf(MODE !== 'record')('records the narrate-then-call turn live through the composer', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-turn-tail-actions-record'))
+    const { settled } = await sendPrompt(180_000)
+    const sessionId = await settled
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('withholds the footer while the turn runs and grants it at turn/end', async () => {
+    expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    let marker = ''
+    // Patch the SECOND call: the first one delivers the narration and the tool
+    // call as recorded, so the park happens with a durable mid-turn message.
+    await launch((sidecarHome) => {
+      marker = join(sidecarHome, '.hang-ready')
+      return { patches: [{ at: 1, entry: { kind: 'hang', readyFile: marker } }] }
+    })
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-turn-tail-actions'))
+    // The barrier is armed before the park and awaited only after the stop
+    // click, so its budget must cover the whole parked phase: marker poll,
+    // three UI polls, and two captures with their stability windows. The
+    // replay default (30s) leaves no headroom on a slow runner.
+    const { settled } = await sendPrompt(120_000)
+    // The marker IS the synchronization: the second call is provably parked,
+    // so the first step's message and tool result are already durable.
+    await expect.poll(() => existsSync(marker), { timeout: 20_000 }).toBe(true)
+    await expect.poll(() => page.getByText(NARRATION, { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(
+      () => page.getByRole('status').filter({ hasText: 'Deep diving...' }).isVisible(),
+      { timeout: 10_000 },
+    ).toBe(true)
+    // Only the user bubble owns a footer (clock + copy; user bubbles carry no
+    // branch action): the narration is not the answer yet.
+    const copyButtons = page.getByRole('button', { name: 'Copy' })
+    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBe(1)
+    expect(await page.getByRole('button', { name: 'Branch into a new conversation' }).count()).toBe(0)
+    await copyButtons.first().focus()
+    const running = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(RUNNING_EXPECTED, running, MODE)
+
+    // Closing the turn from the park is the state change under test: an
+    // aborted turn is durably closed, so its transcript tail (the frozen
+    // partial) takes the seat while the mid-turn narration keeps none.
+    await page.getByRole('button', { name: 'Stop generating' }).click()
+    await settled
+    expect(sessionEvents.filter(e => e.type === 'turn/end').map(e => e.data.reason.kind)).toEqual(['aborted'])
+    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBe(2)
+    await expect.poll(() => page.locator('[data-streaming="true"]').count(), { timeout: 10_000 }).toBe(0)
+    await copyButtons.last().focus()
+    const settledAria = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(SETTLED_EXPECTED, settledAria, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('keeps a closed fixture inventory', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['running.expected.md', 'session.jsonl', 'settled.expected.md'])
+  })
+})

apps/web/tsconfig.json

@@ -63,6 +63,8 @@
     "tests/startup-auto-selection.e2e.ts",
     "tests/subagent-conversation.e2e.ts",
     "tests/bash-abort-row.e2e.ts",
+    "tests/turn-tail-actions.e2e.ts",
+    "tests/goal-multi-turn-actions.e2e.ts",
     "tests/chat-scroll-fixture.ts",
     "tests/chat-scroll-contract.e2e.ts",
     "tests/chat-long-interactions.e2e.ts",

docs/config-catalog.md

@@ -2148,6 +2148,26 @@ export interface Config {
 
 Source: [`packages/tasks/tool-tasks/src/index.ts:23`](../packages/tasks/tool-tasks/src/index.ts)
 
+## `@deepseek-ai/dsh-tool-todo`
+
+Requires: `tools`
+
+```ts config-catalog
+/** Model-facing todo tool configuration. */
+export interface Config {
+  /**
+   * Required deployment choice for whether several todos may be `in_progress` at once. True suits
+   * agents that run work concurrently — subagents, background commands, workflow fan-out — and the
+   * description then instructs the model to mark every actively worked task. False restores the
+   * single-active discipline: the description asks for exactly one, and a call marking more is
+   * rejected.
+   */
+  allowParallelInProgress: boolean
+}
+```
+
+Source: [`packages/todo/tool-todo/src/index.ts:29`](../packages/todo/tool-todo/src/index.ts)
+
 ## `@deepseek-ai/dsh-tool-web`
 
 Requires: `tools` · `web` · `systemPrompt`
@@ -2198,8 +2218,9 @@ export interface Config {
   /**
    * Model presentation. `native` (default) sends every visible schema; `code`
    * sends only `run_code` plus a generated SDK prompt; `both` sends both forms.
-   * Code modes require a TypeScript runtime and fail prompt assembly when it is
-   * absent or mismatched. Under `code`, native names in `toolOrder` are invalid.
+   * Code modes require a `ctx.codeRuntime` whose `language` has a registered
+   * SDK renderer (TypeScript or Python) and fail prompt assembly when it is
+   * absent or has no renderer. Under `code`, native names in `toolOrder` are invalid.
    */
   mode?: ToolPresentationMode
   /**
@@ -2216,7 +2237,7 @@ export interface Config {
 export type ToolPresentationMode = 'native' | 'code' | 'both'
 ```
 
-Source: [`packages/core/tools/src/index.ts:592`](../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:616`](../packages/core/tools/src/index.ts)
 
 ## `@deepseek-ai/dsh-typert-loader`
 
@@ -2510,7 +2531,6 @@ These load from a `cordis.yml` entry with no `config:` block; they declare no co
 - `@deepseek-ai/dsh-timeout-policy` — requires `tools` ([`packages/timeout/timeout-policy/src/index.ts`](../packages/timeout/timeout-policy/src/index.ts))
 - `@deepseek-ai/dsh-tool-ask-user` — requires `tools` · `userInteraction` ([`packages/ui/tool-ask-user/src/index.ts`](../packages/ui/tool-ask-user/src/index.ts))
 - `@deepseek-ai/dsh-tool-subagent-control` — requires `tools` · `subagents` ([`packages/subagent/tool-subagent-control/src/index.ts`](../packages/subagent/tool-subagent-control/src/index.ts))
-- `@deepseek-ai/dsh-tool-todo` — requires `tools` ([`packages/todo/tool-todo/src/index.ts`](../packages/todo/tool-todo/src/index.ts))
 - `@deepseek-ai/dsh-typert-registry` ([`packages/typert/registry/src/index.ts`](../packages/typert/registry/src/index.ts))
 - `@deepseek-ai/dsh-user-interaction` ([`packages/ui/user-interaction/src/index.ts`](../packages/ui/user-interaction/src/index.ts))
 - `@deepseek-ai/dsh-workspace` — requires `storageDomain` · `sessionPersistence` ([`packages/workspace/workspace/src/index.ts`](../packages/workspace/workspace/src/index.ts))

docs/cordis-catalog/events.md

@@ -842,7 +842,7 @@ A tool was registered or unregistered, or a scoped restriction changed (the avai
 'tools/change'(): void
 ```
 
-Source: [`packages/core/tools/src/index.ts:167`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:191`](../../packages/core/tools/src/index.ts)
 
 ### `tools/code-dispatch-log` — waterfall
 
@@ -866,7 +866,7 @@ 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:149`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:173`](../../packages/core/tools/src/index.ts)
 
 ### `tools/execute` — waterfall
 
@@ -888,7 +888,7 @@ 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:124`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:148`](../../packages/core/tools/src/index.ts)
 
 ### `tools/post-execute` — waterfall
 
@@ -911,7 +911,7 @@ 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:136`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:160`](../../packages/core/tools/src/index.ts)
 
 ### `tools/pre-execute` — waterfall
 
@@ -932,7 +932,7 @@ 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:113`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:137`](../../packages/core/tools/src/index.ts)
 
 ### `tools/result` — emit
 
@@ -951,7 +951,7 @@ 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:157`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:181`](../../packages/core/tools/src/index.ts)
 
 ## `workflow/*`
 

docs/cordis-catalog/services.md

@@ -2523,7 +2523,7 @@ 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:714`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:739`](../../packages/core/tools/src/index.ts)
 
 ## `ctx.typert` — `TypertRegistry`
 

docs/core-data-structures/code-runtime.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/code-runtime.md
-code-runtime.md: 77e4438d16cf83f2a66fbe688c8aface3647e8cb
-code-runtime.zh.md: ffd9b5583ee066b837408a03a595962786f192cf
+code-runtime.md: fbce7d812b7609716fb43ae01610253008e0a92c
+code-runtime.zh.md: 700146cfaa9cfab37ec4d85e550020acf1d9f294

docs/core-data-structures/code-runtime.md

@@ -158,4 +158,4 @@ interface CodeRunFailure {
 
 ## The service
 
-`CodeRuntime` (`ctx.codeRuntime`, abstract — defined in [`packages/code-runtime/code-runtime/src/index.ts`](../../packages/code-runtime/code-runtime/src/index.ts)) is `run(request)` plus two readonly descriptors: `language` (what the program must be written in — `'typescript'` is the well-known value; a consumer generating language-specific presentation switches on it and fails loud on one it cannot present) and `isolation` (the execution substrate — `'worker-thread'`, `'process'`, `'container'`; a diagnostic label, **not a security claim**). Implementations must keep runs isolated from each other (no cross-run state) and dispose to quiescence: in-flight runs are terminated and awaited before teardown completes.
+`CodeRuntime` (`ctx.codeRuntime`, abstract — defined in [`packages/code-runtime/code-runtime/src/index.ts`](../../packages/code-runtime/code-runtime/src/index.ts)) is `run(request)` plus two readonly descriptors: `language` (what the program must be written in — `'typescript'` and `'python'` are the well-known values, those `dsh-tools` presents, and only `'typescript'` has a published backend; a consumer generating language-specific presentation switches on it and fails loud on one it cannot present) and `isolation` (the execution substrate — `'worker-thread'`, `'process'`, `'container'`; a diagnostic label, **not a security claim**). Implementations must keep runs isolated from each other (no cross-run state) and dispose to quiescence: in-flight runs are terminated and awaited before teardown completes.

docs/core-data-structures/code-runtime.zh.md

@@ -158,4 +158,4 @@ interface CodeRunFailure {
 
 ## 服务
 
-`CodeRuntime`（`ctx.codeRuntime`，抽象服务，定义于 [`packages/code-runtime/code-runtime/src/index.ts`](../../packages/code-runtime/code-runtime/src/index.ts)）由 `run(request)` 加两个只读描述符组成：`language`（程序必须使用的语言，`'typescript'` 是已知值；生成语言相关展示的消费方据此切换，遇到无法展示的语言时应显式报错）和 `isolation`（执行基底，`'worker-thread'`、`'process'`、`'container'`；仅为诊断标签，**不构成安全承诺**）。实现必须保证各次运行彼此隔离（无跨运行状态），并在 dispose（资源释放）时等待系统完全停稳：teardown 要等到所有进行中的运行均已终止并结算后才完成。
+`CodeRuntime`（`ctx.codeRuntime`，抽象服务，定义于 [`packages/code-runtime/code-runtime/src/index.ts`](../../packages/code-runtime/code-runtime/src/index.ts)）由 `run(request)` 加两个只读描述符组成：`language`（程序必须使用的语言，已知值为 `'typescript'` 与 `'python'`，即 `dsh-tools` 能呈现的那些，其中只有 `'typescript'` 有已发布的后端；生成语言相关展示的消费方据此切换，遇到无法展示的语言时应显式报错）和 `isolation`（执行基底，`'worker-thread'`、`'process'`、`'container'`；仅为诊断标签，**不构成安全承诺**）。实现必须保证各次运行彼此隔离（无跨运行状态），并在 dispose（资源释放）时等待系统完全停稳：teardown 要等到所有进行中的运行均已终止并结算后才完成。

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: fac201b581e395865fd46d51bca1350cbbc46e8e
-session.zh.md: 53dc9d11de895deec72aaf5ea81c70ba87c9c6bd
+session.md: fb04ff3eb3c15d1f3c923ee73d4ba19537d36f11
+session.zh.md: 138159d97a5c368f28821715512632e0ca95b29e

docs/core-data-structures/session.md

@@ -144,7 +144,7 @@ The unit of the `todo/write` event's whole-list snapshot. Deliberately minimal
 interface TodoItem {
   /** What this task is — a short imperative line shown in the UI. */
   content: string
-  /** Lifecycle state. `in_progress` marks the single task being worked now. */
+  /** Lifecycle state. `in_progress` marks a task being worked now; parallel work may mark several. */
   status: 'pending' | 'in_progress' | 'completed'
 }
 ```

docs/core-data-structures/session.zh.md

@@ -144,7 +144,7 @@ interface SessionEventMap {
 interface TodoItem {
   /** What this task is — a short imperative line shown in the UI. */
   content: string
-  /** Lifecycle state. `in_progress` marks the single task being worked now. */
+  /** Lifecycle state. `in_progress` marks a task being worked now; parallel work may mark several. */
   status: 'pending' | 'in_progress' | 'completed'
 }
 ```

docs/event-producer-consumer.md

@@ -44,12 +44,12 @@ 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:167`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
-| `tools/code-dispatch-log` | `waterfall` | [`packages/core/tools/src/index.ts:149`](../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:124`](../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:136`](../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) |
-| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/index.ts:113`](../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:157`](../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:191`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
+| `tools/code-dispatch-log` | `waterfall` | [`packages/core/tools/src/index.ts:173`](../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:148`](../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:160`](../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) |
+| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/index.ts:137`](../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:181`](../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) |

docs/tool-catalog.md

@@ -7,7 +7,7 @@ Every model-facing tool a shipped plugin contributes to `ctx.tools`: the `name`,
 
 This file is GENERATED and verified fresh by `pnpm run verify-tool-catalog` (part of `doc-sync`) — do not edit it by hand. Unlike the cordis catalog (a pure source-AST pass), this generator BOOTS each tool plugin on a real context and reads `ctx.tools.schemas()`, because a tool schema is not statically knowable (runtime-spread enums, concatenated descriptions, config-driven names, raw-JSON-Schema MCP tools). A completeness guard globs `packages/*/tool-*` and fails if any package is missing from the generator's boot manifest, so a new tool cannot be silently undocumented. See [the tool-schema-catalog Agent Note](../.agents/notes/implemented/process/2026-07-02-tool-schema-catalog.md).
 
-Scope: shipped product tools under `packages/*/tool-*`, each booted with its DEFAULT config. The registered tool NAME can be a load-time config (e.g. `tool-subagent`'s `toolName`), so a deployment may surface a package under a different or additional name — a per-package note records those shipped aliases where they exist. The `examples/` demo tools (e.g. `echo`) are excluded, matching the cordis catalog's packages-only scope.
+Scope: shipped product tools under `packages/*/tool-*`, each booted with its DEFAULT config, except where a Config field is REQUIRED with no default — there the generator must choose, and the per-package note records which branch this page shows. The registered tool NAME can be a load-time config (e.g. `tool-subagent`'s `toolName`), so a deployment may surface a package under a different or additional name — a per-package note records those shipped aliases where they exist. The `examples/` demo tools (e.g. `echo`) are excluded, matching the cordis catalog's packages-only scope.
 
 ## Tool Package Map
 
@@ -16,7 +16,7 @@ This table connects model-visible tool names to the plugin package and service s
 | Tool package | Model-visible names | Requires | Writes / affects | Shipped aliases | Deployment note |
 | --- | --- | --- | --- | --- | --- |
 | `@deepseek-ai/dsh-tool-ask-user` | `ask_user_question` | `ctx.tools`, `ctx.userInteraction` | `tool/call`, `tool/result after a UI/provider answers the question` | - | ask_user_question pauses the tool call until the active UI provider returns a human answer. |
-| `@deepseek-ai/dsh-tools` | `run_code` | `ctx.tools`, `ctx.codeRuntime (execution time)`, `ctx.systemPrompt` | `tool/call`, `one tool/code-dispatch-start + tool/code-dispatch pair per bridged sub-call`, `tool/result` | - | Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result. |
+| `@deepseek-ai/dsh-tools` | `run_code` | `ctx.tools`, `ctx.codeRuntime (execution time)`, `ctx.systemPrompt` | `tool/call`, `one tool/code-dispatch-start + tool/code-dispatch pair per bridged sub-call`, `tool/result` | - | Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated SDK section in the loaded runtime's language, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result. |
 | `@deepseek-ai/dsh-plan-mode` | `exit_plan_mode` | `ctx.tools`, `ctx.systemPrompt`, `ctx.userInteraction (execution time, opportunistic)` | `tool/call`, `plan/mode inactive on an approved review`, `tool/result` | - | exit_plan_mode stays in the model-facing schema while planning is inactive so transitions add no tool-catalog churn on top of the plan-policy change. Its execute path rejects calls outside plan mode; in plan mode it presents the plan over the user-interaction seam (approve / keep planning with feedback), and approval logs plan mode inactive at the step boundary. |
 | `@deepseek-ai/dsh-tool-bash` | `bash` | `ctx.tools`, `ctx.bash`, `ctx.systemPrompt`, `ctx.bashEnv`, `ctx.tasks at call time for run_in_background` | `tool/call`, `tool/result` | - | The bash tool is the model-facing consumer of the bash executor seam. A `run_in_background` run registers with the generic `ctx.tasks` runtime and is collected/stopped through the `task_*` tools from `@deepseek-ai/dsh-tool-tasks`; the `enableRunInBackground` config (default true) removes the parameter entirely when disabled. |
 | `@deepseek-ai/dsh-tool-pwsh` | `pwsh` | `ctx.tools`, `ctx.bash`, `ctx.systemPrompt`, `ctx.bashEnv`, `ctx.tasks at call time for run_in_background` | `tool/call`, `tool/result` | - | The pwsh tool is the PowerShell-dialect consumer of the bash executor seam for Windows compositions (a PowerShell executor such as `@deepseek-ai/dsh-pwsh-local` backs `ctx.bash`); it mirrors the bash tool call-for-call minus the sandbox surface — `run_in_background` runs register with the generic `ctx.tasks` runtime and are collected/stopped through the `task_*` tools, and the managed `DSH_*` environment comes from `@deepseek-ai/dsh-bash-env`. Each call runs in a fresh process (no persistent PTY session; ConPTY is roadmap work), with native `C:\...` paths and `$env:NAME` variables. |
@@ -35,7 +35,7 @@ This table connects model-visible tool names to the plugin package and service s
 | `@deepseek-ai/dsh-tool-subagent-control` | `list_agents`, `send_message` | `ctx.tools`, `ctx.subagents`, `ctx.sessionProjections (list_agents catalog rows)` | `tool/call`, `tool/result`, `child session events through ctx.subagents` | - | The globally named control tools over continuable background subagents: provider-bound `tool-subagent` instances register distinct delegation tools, while this package registers `send_message` once, plus `list_agents` from its separately loaded `/list-agents` plugin (whose catalog rows are served through the sessionProjections registry). |
 | `@deepseek-ai/dsh-tool-subagent-report` | `report` | `ctx.subagents`, `a live continuable in-process child Agent` | `tool/call`, `tool/result`, `a user-role message in the direct parent session` | - | Registered per continuable in-process child rather than globally, so this schema is visible only inside such a child and survives its global `toolFilter`. The parent-facing `send_message` tool is installed independently. |
 | `@deepseek-ai/dsh-tool-tasks` | `task_kill`, `task_list`, `task_output` | `ctx.tools`, `ctx.tasks`, `ctx.systemPrompt` | `tool/call`, `tool/result`, `user/message via agent.inject() for background completion notices` | - | The kind-agnostic background-task control surface: background bash commands, PTY sends, and subagents are read, listed, and killed through the same three tools. Loading the plugin attaches the control surface that arms producers' `ctx.tasks.start()`. |
-| `@deepseek-ai/dsh-tool-todo` | `todo_write` | `ctx.tools`, `owning Agent session` | `tool/call`, `todo/write`, `tool/result` | - | todo_write is session-owned state; UIs render the latest todo/write event as a checklist. |
+| `@deepseek-ai/dsh-tool-todo` | `todo_write` | `ctx.tools`, `owning Agent session` | `tool/call`, `todo/write`, `tool/result` | - | todo_write is session-owned state; UIs render the latest todo/write event as a checklist. `allowParallelInProgress` is required with no default, so the catalog states its choice: `true`, whose description invites several `in_progress` items. A deployment choosing `false` receives the same tool with a description asking for exactly one active task. |
 | `@deepseek-ai/dsh-tool-workflow` | `workflow` | `ctx.tools`, `ctx.workflows`, `ctx.systemPrompt`, `a calling Agent (exec.agent parents the script children)` | `tool/call`, `tool/result` | - | - |
 | `@deepseek-ai/dsh-tool-web` | `web_fetch`, `web_search` | `ctx.tools`, `ctx.web`, `ctx.systemPrompt` | `tool/call`, `tool/result` | - | web_search and web_fetch keep provider selection behind ctx.web so model-visible schemas stay stable across backend swaps. |
 
@@ -139,7 +139,7 @@ Execute a TypeScript program against the available tools. Write the BODY of an a
 
 Source: [`packages/core/tools/src/code-mode.ts`](../packages/core/tools/src/code-mode.ts)
 
-Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result.
+Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated SDK section in the loaded runtime's language, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result.
 
 ## `@deepseek-ai/dsh-plan-mode`
 
@@ -1334,7 +1334,7 @@ The kind-agnostic background-task control surface: background bash commands, PTY
 
 ### `todo_write`
 
-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).
+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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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).
 
 ```json
 {
@@ -1376,7 +1376,7 @@ Record and update a structured task list for the current work. Send the ENTIRE l
 
 Source: [`packages/todo/tool-todo/src/index.ts`](../packages/todo/tool-todo/src/index.ts)
 
-todo_write is session-owned state; UIs render the latest todo/write event as a checklist.
+todo_write is session-owned state; UIs render the latest todo/write event as a checklist. `allowParallelInProgress` is required with no default, so the catalog states its choice: `true`, whose description invites several `in_progress` items. A deployment choosing `false` receives the same tool with a description asking for exactly one active task.
 
 ## `@deepseek-ai/dsh-tool-workflow`
 

examples/acp-agent/cordis.yml

@@ -147,6 +147,8 @@
 # `todo_write` replaces the logged whole list for later model requests.
 - id: tool-todo
   name: '@deepseek-ai/dsh-tool-todo'
+  config:
+    allowParallelInProgress: true
 
 # Identical repeat calls trigger advisory context, never a block, at the default
 # thresholds [3, 5, 8]. Only the repeat-tool-guard snapshot scenario reaches them.

examples/acp-agent/tests/snapshots/advanced-toolchain/system-prompt.expected.md

@@ -160,7 +160,7 @@ interface ToolArgsMap {
     /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */
     timeout_ms?: number;
   } & Record<string, JsonValue>;
-  /** 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). */
+  /** 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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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). */
   todo_write: {
     /** The COMPLETE task list, replacing any previous list. */
     todos: ({

examples/acp-agent/tests/snapshots/advanced-toolchain/tool-schemas.expected.json

@@ -386,7 +386,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/both-mode-turn/tool-schemas.expected.json

@@ -329,7 +329,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/code-mode-turn/system-prompt.expected.md

@@ -143,7 +143,7 @@ interface ToolArgsMap {
     /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */
     timeout_ms?: number;
   } & Record<string, JsonValue>;
-  /** 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). */
+  /** 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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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). */
   todo_write: {
     /** The COMPLETE task list, replacing any previous list. */
     todos: ({

examples/acp-agent/tests/snapshots/lsp-definition/tool-schemas.expected.json

@@ -345,7 +345,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/pty-tools/tool-schemas.expected.json

@@ -437,7 +437,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/session-query-spill/tool-schemas.expected.json

@@ -512,7 +512,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/subagent-continuable/tool-schemas.1.expected.json

@@ -324,7 +324,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/subagent-list-agents/tool-schemas.1.expected.json

@@ -324,7 +324,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/subagent-report/tool-schemas.1.expected.json

@@ -324,7 +324,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/text-turn/tool-schemas.expected.json

@@ -308,7 +308,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/acp-agent/tests/snapshots/todo-write/input.json

@@ -2,6 +2,6 @@
   "steps": [
     { "op": "initialize" },
     { "op": "newSession" },
-    { "op": "prompt", "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." }
+    { "op": "prompt", "text": "Use the todo_write tool to record a plan with exactly three todos for work running in parallel: \"read the code\" (in_progress), \"watch the background build\" (in_progress), \"write the fix\" (pending). Send all three in one todo_write call. Then reply with the single word DONE and stop." }
   ]
 }

examples/acp-agent/tests/snapshots/todo-write/session.jsonl

@@ -1,36 +1,37 @@
-{"type":"session","version":0,"id":"b0f1f758-dcf0-474e-851d-e62c11ec0a09","createdAt":1783352057652,"cwd":"{{cwd}}","delegationDepth":0}
-{"type":"agent/inbox/spliced","seq":0,"time":1785498772484,"data":{"target":"next-turn","start":0,"inserted":[{"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":"5ecf5e4b-6a18-447d-9341-48f38afdd12e"}]}}
-{"type":"turn/start","seq":1,"time":1785821376741,"data":{"turn":1}}
-{"type":"agent/inbox/spliced","seq":2,"time":1785821376741,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
-{"type":"step/start","seq":3,"time":1783352057657,"data":{"turn":1,"step":1}}
-{"type":"user/message","seq":4,"time":1785498772510,"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":"5ecf5e4b-6a18-447d-9341-48f38afdd12e"},"surfaceOp":"append"}
-{"type":"user/message","seq":5,"time":1785730425725,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"8d4ac045-8016-4cec-8b12-91d9459231e1"},"surfaceOp":"append"}
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-{"type":"request/header","seq":7,"time":1785498772511,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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-{"type":"assistant/chunk","seq":134,"time":1785730425764,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":135,"time":1785730425764,"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":"c4e454ce-14cc-4030-be47-0395ac9f12fb"},"usage":{"inputTokens":237,"outputTokens":24,"cacheReadTokens":2816,"reasoningTokens":21}},"sourceEventSeqs":[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],"surfaceOp":"append"}
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-{"type":"turn/end","seq":137,"time":1785730425764,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"session","version":0,"id":"d9d967e8-0112-471c-a3b5-dfdc171aba61","createdAt":1785987077399,"cwd":"{{cwd}}","delegationDepth":0}
+{"type":"agent/inbox/spliced","seq":0,"time":1785987077401,"data":{"target":"next-turn","start":0,"inserted":[{"content":[{"type":"text","text":"Use the todo_write tool to record a plan with exactly three todos for work running in parallel: \"read the code\" (in_progress), \"watch the background build\" (in_progress), \"write the fix\" (pending). Send all three in one todo_write call. Then reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"befb10e9-f992-4a19-9e1b-333ad7fd72f8"}]}}
+{"type":"turn/start","seq":1,"time":1785987077401,"data":{"turn":1}}
+{"type":"agent/inbox/spliced","seq":2,"time":1785987077401,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":3,"time":1785987077430,"data":{"turn":1,"step":1}}
+{"type":"user/message","seq":4,"time":1785987077430,"data":{"content":[{"type":"text","text":"Use the todo_write tool to record a plan with exactly three todos for work running in parallel: \"read the code\" (in_progress), \"watch the background build\" (in_progress), \"write the fix\" (pending). Send all three in one todo_write call. Then reply with the single word DONE and stop."}],"source":{"kind":"user"},"role":"user","id":"befb10e9-f992-4a19-9e1b-333ad7fd72f8"},"surfaceOp":"append"}
+{"type":"user/message","seq":5,"time":1785987077430,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"3893b488-4678-4b29-be9f-6365854b0ddc"},"surfaceOp":"append"}
+{"type":"session/title","seq":6,"time":1785987077430,"data":{"title":"Use the todo_write tool to","messageSeqs":[4],"source":{"kind":"fallback"}}}
+{"type":"request/header","seq":7,"time":1785987077431,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":8,"time":1785987077431,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
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+{"type":"assistant/chunk","seq":93,"time":1785987080614,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_UHvM5RrwIkjNJ9xh3S735164","name":"todo_write","arguments":"{\"todos\": [{\"content\": \"read the code\", \"status\": \"in_progress\"}, {\"content\": \"watch the background build\", \"status\": \"in_progress\"}, {\"content\": \"write the fix\", \"status\": \"pending\"}]}"}}}}
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+{"type":"step/end","seq":113,"time":1785987081455,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":114,"time":1785987081455,"data":{"turn":1,"reason":{"kind":"completed"}}}

examples/acp-agent/tests/snapshots/web-fetch/tool-schemas.expected.json

@@ -308,7 +308,7 @@
     },
     {
       "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).",
+      "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. Mark every todo being actively worked on `in_progress` — several at once when work genuinely runs in parallel (e.g. concurrent subagents or background commands), one for sequential work; while work remains, at least one 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": {

examples/headless-agent/cordis.yml

@@ -134,6 +134,8 @@
 # `todo_write` replaces the logged whole list.
 - id: tool-todo
   name: '@deepseek-ai/dsh-tool-todo'
+  config:
+    allowParallelInProgress: true
 
 # Policy loads before the model-facing filesystem tools so writes and edits
 # require an observed file. Relative paths resolve from the process cwd.

examples/headless-agent/tests/harness.ts

@@ -30,8 +30,9 @@ export const SYSTEM_PROMPT = 'You are a coding agent. Use bash for file operatio
 /** System prompt for the todo_write e2e: nudges the model to plan with the tool. */
 export const TODO_SYSTEM_PROMPT = 'You are a coding agent. For multi-step work, '
   + 'use the todo_write tool to track a task list: send the WHOLE list each call, '
-  + 'keep at most one task in_progress (exactly one while work remains), and mark '
-  + 'a task completed as soon as it is done.'
+  + 'mark every task being actively worked on in_progress (several at once when '
+  + 'work runs in parallel, at least one while work remains), and mark a task '
+  + 'completed as soon as it is done.'
 
 /** Options for {@link codingHarness}. */
 export interface CodingHarnessOptions {
@@ -65,7 +66,7 @@ export async function codingHarness(workdir: string, options: CodingHarnessOptio
   await ctx.plugin(BashEnvPlugin)
   await ctx.plugin(LocalBashExecutor, { cwd: workdir, timeoutMs: 30_000 })
   await ctx.plugin(ToolBash)
-  await ctx.plugin(ToolTodo)
+  await ctx.plugin(ToolTodo, { allowParallelInProgress: true })
   // Compaction is opt-in: only the compaction e2e loads the reusable meter and backend.
   if (options.compact !== undefined) {
     await ctx.plugin(TokenMeterService)