Merge remote-tracking branch 'origin/master' into feat/loader-entry-disabled-interpolation

# Conflicts: # scripts/verify-cordis-config.ts
2026-08-15 21:04:50 +00:00 · 2026-08-11 21:04:49 +08:00
parent 32744c2b5c 8a29248425
commit ccb3e4aaac
133 changed files with 4909 additions and 207 deletions
--- a/packages/bash/bash-local/README.i18n.yaml
+++ b/packages/bash/bash-local/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/bash-local/README.md
-README.md: 253d1c9efb518ca204956f062b2f529f4e83531b
-README.zh.md: 5a0d943a08d1da6c73ad07f469c056180b476ff3
+README.md: 386ffc00466108ab14352b6d39d3a20da3321e1c
+README.zh.md: 39d37bededa72ec96911bb1ce055ed105fdd7082
--- a/packages/bash/bash-local/README.md
+++ b/packages/bash/bash-local/README.md
@@ -23,6 +23,7 @@ The package root exports the default and named `LocalBashExecutor` plugin plus i
 ## Behavior

 - **Spawn per call, no shell state** — every call is a fresh non-login `bash -c` with no rc files.
+- **The composition entry is a layer, not the last word** — when a settings provider is composed, this executor registers the capability's [`bash` namespace](../bash/README.md) with the entry above as its base, so a user section in `settings.yaml` layers over it and the next command runs with the new budgets. Values the schema cannot judge (positive and finite, the `graceMs` timer bound) are refused at the write, leaving the running executor on its last good section; without a provider, or after one detaches, the composition entry is what runs.
 - **Configured budgets over managed groups** — `resolve()` fills `workdir`/`timeoutMs`/`stdoutMaxBytes` from config, and every spawn hands the service explicit byte caps, spill cap, and `graceMs`. The grace must be positive, finite, and no greater than [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md), so Node can represent it with one timer. Process-group kills, post-exit pipe draining, tail retention, and bounded spill files are [`dsh-subprocess-local`](../../subprocess/subprocess-local/README.md) mechanics. A foreground `BashExecRequest.stdoutMaxBytes` can raise stdout's capture budget for one trusted caller; stderr and background runs still use `maxOutputBytes`.
 - **Timeout and cancel classification** — `run()` fuses its config-clamped timeout with the caller's signal through one deadline; only the executor's own timeout reports `timedOut`, an upstream cancel reports `aborted`, and a self-signaled command reports neither ([timeout-library Agent Note](../../../.agents/notes/implemented/architecture/2026-07-06-timeout-deadline-library.md)).
 - **Model-friendly terminal env** — `NO_COLOR=1 TERM=dumb PAGER=cat GIT_PAGER=cat` prevents pagers and ANSI color from garbling results. These values merge as ordinary env under the service's credential scrub and `DSH_*` channel rules; an explicit caller entry still wins. See the [stdin/env Agent Note](../../../.agents/notes/implemented/architecture/2026-06-30-bash-stdin-env-trusted-plugin-api.md) and [managed environment Agent Note](../../../.agents/notes/implemented/feature/2026-07-10-agent-session-identity-and-log-location.md).
--- a/packages/bash/bash-local/README.zh.md
+++ b/packages/bash/bash-local/README.zh.md
@@ -23,6 +23,7 @@
 ## 行为

 - **每次调用都 spawn，不保留 shell 状态**：每次调用都启动新的非登录 `bash -c`，且不读取 rc 文件。
+- **组装条目是一层，而不是最终值**：当组装中存在 settings 提供方时，本执行器以上面的条目为 base 注册该能力的 [`bash` 命名空间](../bash/README.md)，因此 `settings.yaml` 中的用户段会叠加其上，下一条命令即按新预算运行。schema 无法判定的值（正有限、`graceMs` 的定时器上界）会在写入时被拒绝，运行中的执行器保持它最后一份可用的段；没有提供方、或提供方脱离之后，运行的就是组装条目。
 - **在受管进程组之上应用配置预算**：`resolve()` 从配置补全 `workdir`／`timeoutMs`／`stdoutMaxBytes`，每次 spawn 都向服务传入显式的字节上限、spill 上限与 `graceMs`。该宽限期须为正有限值，且不得大于 [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md)，这样 Node 就能用一个定时器表示它。进程组终止、退出后管道排空、尾部保留与有界 spill 文件是 [`dsh-subprocess-local`](../../subprocess/subprocess-local/README.md) 的机制。前台 `BashExecRequest.stdoutMaxBytes` 可为某个受信任调用方提高单次 stdout 捕获预算；stderr 和后台运行仍使用 `maxOutputBytes`。
 - **超时与取消分类**：`run()` 通过同一个 deadline 把经配置钳位的超时与调用方的信号融合；只有执行器自身的超时报告 `timedOut`，上游取消报告 `aborted`，自身因信号终止的命令两者皆不报告（见[超时库 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-06-timeout-deadline-library.md)）。
 - **适合模型的终端环境**：`NO_COLOR=1 TERM=dumb PAGER=cat GIT_PAGER=cat` 防止分页器与 ANSI 颜色破坏结果。这些值作为普通 env 合并，遵循服务的凭据清除与 `DSH_*` 通道规则；调用方的显式条目依旧优先。详见 [stdin/env Agent Note](../../../.agents/notes/implemented/architecture/2026-06-30-bash-stdin-env-trusted-plugin-api.md) 与 [受管环境 Agent Note](../../../.agents/notes/implemented/feature/2026-07-10-agent-session-identity-and-log-location.md)。
--- a/packages/bash/bash-local/package.json
+++ b/packages/bash/bash-local/package.json
@@ -36,7 +36,8 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-timeout": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  },
  "dependencies": {
    "@deepseek-ai/schemastery": "workspace:^"
@@ -47,6 +48,7 @@
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-subprocess-local": "workspace:^",
    "@deepseek-ai/dsh-timeout": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  }
 }
--- a/packages/bash/bash-local/src/index.ts
+++ b/packages/bash/bash-local/src/index.ts
@@ -11,9 +11,10 @@

 import { Context } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
-import { BashExecutor } from '@deepseek-ai/dsh-bash'
+import { BASH_SETTINGS_NAMESPACE, BashExecutor } from '@deepseek-ai/dsh-bash'
 import type { BashExecRequest, BashExecSpec, BashProcess, BashProcessRead, BashRunResult, CollectedOutput } from '@deepseek-ai/dsh-bash'
 import type { SubprocessCollect, SubprocessHandle, SubprocessOutputReader, SubprocessSpawnSpec } from '@deepseek-ai/dsh-subprocess'
+import { installSettingsSection } from '@deepseek-ai/dsh-settings'
 import { clampTimeout, deadline, MAX_TIMER_DELAY_MS, timeoutOf } from '@deepseek-ai/dsh-timeout'

 /**
@@ -71,6 +72,26 @@ function assertPositiveFinite(name: string, value: number): void {
  }
 }

+/**
+ * Reject a resolved section this executor could not run with. The schema
+ * expresses neither "positive and finite" nor the timer bound `graceMs` has to
+ * fit, so a stored value is refused where it is written instead of failing at
+ * the next command.
+ * @param config - the resolved section, schema-valid by construction.
+ * @throws Error naming the field that cannot be used.
+ */
+export function assertServiceableBashConfig(config: Config): void {
+  const resolved = config as ResolvedConfig
+  assertPositiveFinite('timeoutMs', resolved.timeoutMs)
+  assertPositiveFinite('maxTimeoutMs', resolved.maxTimeoutMs)
+  assertPositiveFinite('maxOutputBytes', resolved.maxOutputBytes)
+  assertPositiveFinite('maxSpillBytes', resolved.maxSpillBytes)
+  assertPositiveFinite('graceMs', resolved.graceMs)
+  if (resolved.graceMs > MAX_TIMER_DELAY_MS) {
+    throw new Error(`bash-local: graceMs must be no greater than ${MAX_TIMER_DELAY_MS}`)
+  }
+}
+
 /**
 * Local bash executor over `ctx.subprocess`. Bounded output, spill files, and
 * process-group SIGTERM→SIGKILL escalation are the subprocess service's
@@ -90,21 +111,29 @@ export class LocalBashExecutor extends BashExecutor {
    graceMs: z.number().default(DEFAULT_GRACE_MS),
  })

+  /** The currently authoritative config: the settings section, or the composition entry. */
+  private source: () => ResolvedConfig
+
  /** Validated config (schemastery applied the defaults before construction). */
-  readonly config: ResolvedConfig
+  get config(): ResolvedConfig {
+    return this.source()
+  }

  constructor(ctx: Context, config: Config) {
    super(ctx)
    // Schemastery fills these fields before construction; the type does not encode that step.
-    this.config = config as ResolvedConfig
-    assertPositiveFinite('timeoutMs', this.config.timeoutMs)
-    assertPositiveFinite('maxTimeoutMs', this.config.maxTimeoutMs)
-    assertPositiveFinite('maxOutputBytes', this.config.maxOutputBytes)
-    assertPositiveFinite('maxSpillBytes', this.config.maxSpillBytes)
-    assertPositiveFinite('graceMs', this.config.graceMs)
-    if (this.config.graceMs > MAX_TIMER_DELAY_MS) {
-      throw new Error(`bash-local: graceMs must be no greater than ${MAX_TIMER_DELAY_MS}`)
-    }
+    const entry = config as ResolvedConfig
+    assertServiceableBashConfig(entry)
+    this.source = () => entry
+    installSettingsSection(ctx, BASH_SETTINGS_NAMESPACE, LocalBashExecutor.Config, entry, {
+      validate: assertServiceableBashConfig,
+      setSource: (current) => {
+        this.source = current as () => ResolvedConfig
+      },
+      // Every field is read through the getter at each command, so nothing
+      // derived from the source needs rebuilding when the document changes.
+      onChange: () => {},
+    })
  }

  /**
--- a/packages/bash/bash-local/tests/settings.spec.ts
+++ b/packages/bash/bash-local/tests/settings.spec.ts
@@ -0,0 +1,115 @@
+/** The `bash` settings section layered over the executor's composition entry. */
+
+import { describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import type { Fiber } from '@deepseek-ai/cordis'
+import { Settings } from '@deepseek-ai/dsh-settings'
+import type { SettingsNamespace } from '@deepseek-ai/dsh-settings'
+import LocalSubprocessService from '@deepseek-ai/dsh-subprocess-local'
+import { BASH_SETTINGS_NAMESPACE } from '@deepseek-ai/dsh-bash'
+import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
+
+/** The smallest real provider: one in-memory document, always writable. */
+class MemorySettings extends Settings {
+  doc: Record<string, unknown> = {}
+
+  get writable(): boolean {
+    return true
+  }
+
+  protected load(): Promise<Record<string, unknown>> {
+    return Promise.resolve(structuredClone(this.doc))
+  }
+
+  protected persist(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
+    this.doc = { ...this.doc, [ns]: structuredClone(section) }
+    return Promise.resolve()
+  }
+}
+
+async function boot(config: ConstructorParameters<typeof LocalBashExecutor>[1] = {}): Promise<{
+  ctx: Context
+  settingsFiber: Fiber
+  executorFiber: Fiber
+  bash: LocalBashExecutor
+}> {
+  const ctx = new Context()
+  await ctx.plugin(LocalSubprocessService)
+  const settingsFiber = ctx.plugin(MemorySettings)
+  await settingsFiber.await()
+  const executorFiber = ctx.plugin(LocalBashExecutor, { timeoutMs: 60_000, ...config })
+  await executorFiber.await()
+  return { ctx, settingsFiber, executorFiber, bash: ctx.bash as LocalBashExecutor }
+}
+
+describe('bash settings section', () => {
+  it('resolves the user layer over the composition entry', async () => {
+    const bench = await boot()
+    expect(bench.bash.config.timeoutMs).toBe(60_000)
+
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 5_000 })
+
+    expect(bench.bash.config.timeoutMs).toBe(5_000)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('refuses a stored value the constructor would have rejected', async () => {
+    const bench = await boot()
+
+    await expect(bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 0 }))
+      .rejects.toThrow(/positive finite/)
+
+    expect(bench.bash.config.timeoutMs).toBe(60_000)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('refuses a grace period longer than a timer can carry', async () => {
+    const bench = await boot()
+
+    await expect(bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { graceMs: Number.MAX_SAFE_INTEGER }))
+      .rejects.toThrow(/graceMs must be no greater than/)
+
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('serves the stored section to every later read', async () => {
+    const bench = await boot()
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { maxOutputBytes: 1_024, cwd: '/tmp' })
+
+    const spec = bench.bash.resolve({ command: 'true' })
+
+    expect(spec.stdoutMaxBytes).toBe(1_024)
+    expect(spec.workdir).toBe('/tmp')
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('falls back to the composition entry when the settings provider detaches', async () => {
+    const bench = await boot()
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 5_000 })
+    expect(bench.bash.config.timeoutMs).toBe(5_000)
+
+    await bench.settingsFiber.dispose()
+
+    expect(bench.bash.config.timeoutMs).toBe(60_000)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('keeps the composition entry when no settings provider is mounted', async () => {
+    const ctx = new Context()
+    await ctx.plugin(LocalSubprocessService)
+    await ctx.plugin(LocalBashExecutor, { timeoutMs: 1_234 })
+
+    expect((ctx.bash as LocalBashExecutor).config.timeoutMs).toBe(1_234)
+    await ctx.fiber.dispose()
+  })
+
+  it('releases the namespace when the executor unloads', async () => {
+    const bench = await boot()
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).toContain('bash')
+
+    await bench.executorFiber.dispose()
+
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).not.toContain('bash')
+    await bench.ctx.fiber.dispose()
+  })
+})
--- a/packages/bash/bash-local/tsconfig.json
+++ b/packages/bash/bash-local/tsconfig.json
@@ -29,6 +29,9 @@
    {
      "path": "../../subprocess/subprocess"
    },
+    {
+      "path": "../../settings/settings"
+    },
    {
      "path": "../../support/invariants"
    }
--- a/packages/bash/bash/README.i18n.yaml
+++ b/packages/bash/bash/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/bash/README.md
-README.md: a076c6ef3150de86c251f0501b18de01c4491c67
-README.zh.md: 1be9f817a8379b2974fb4cfd63c197c320934f00
+README.md: ef873dfb87cb330847274be59d5f2a0c3a5bc0b9
+README.zh.md: 4047765f248a25ff700ba62bf87636c0e8bfe7ac
--- a/packages/bash/bash/README.md
+++ b/packages/bash/bash/README.md
@@ -27,6 +27,8 @@ The split is a standard capability seam ([capability-seams Agent Note](../../../

 Implementations subclass `BashExecutor` and implement the abstract methods. Disposal must kill every running process and await its exit.

+`BASH_SETTINGS_NAMESPACE` (`bash`) is exported here rather than by a provider because it names the capability, not an implementation. A host composes exactly one provider of `ctx.bash` — the win32 layer swaps the POSIX rows for the pwsh ones, and mounting both fails loud on a duplicate service registration — so every provider can register this one namespace with its own schema and composition entry without two of them ever colliding, and a `settings.yaml` carried between platforms keeps resolving on both.
+
 ## Vocabulary

 `BashExecRequest` (command, workdir?, timeoutMs?, stdoutMaxBytes?, signal?, stdin?, env?, dshEnv?, sandboxPolicy?) resolves to `BashExecSpec` (command, workdir, timeoutMs, stdoutMaxBytes, signal?, stdin?, env?, dshEnv?, sandboxPolicy) before execution. `stdoutMaxBytes` is a trusted foreground-run capture budget for consumers that must parse complete bounded stdout; the model-facing bash tool does not expose it. `sandboxPolicy` is optional on the request and required-but-nullable on the resolved spec: it carries the complete per-call mode and workspace root. The sandbox tool path resolves it from the calling session through `ctx.sandboxPolicy`; a direct sandbox-executor caller falls back to deployment policy, while a non-sandboxing executor carries the field and confines nothing.
--- a/packages/bash/bash/README.zh.md
+++ b/packages/bash/bash/README.zh.md
@@ -27,6 +27,8 @@

 实现会继承 `BashExecutor` 并实现抽象方法。dispose（资源释放）必须终止每个运行中的进程并等待其退出。

+`BASH_SETTINGS_NAMESPACE`（`bash`）由此处导出而非由某个提供方导出，因为它命名的是能力而不是实现。一个宿主只组装一个 `ctx.bash` 提供方——win32 层会把 POSIX 行换成 pwsh 行，同时挂载两者会因服务重复注册而在加载期失败——所以每个提供方都能用自己的 schema 与组装条目注册这同一个命名空间，两者永不相撞；在平台间携带的 `settings.yaml` 也能在两边继续解析。
+
 ## 词汇

 `BashExecRequest`（command、workdir?、timeoutMs?、stdoutMaxBytes?、signal?、stdin?、env?、dshEnv?、sandboxPolicy?）在执行前解析为 `BashExecSpec`（command、workdir、timeoutMs、stdoutMaxBytes、signal?、stdin?、env?、dshEnv?、sandboxPolicy）。`stdoutMaxBytes` 是受信任前台运行的捕获预算，用于必须解析完整有界 stdout 的消费方；面向模型的 bash 工具不公开该字段。`sandboxPolicy` 在请求上可选，在已解析 spec 上必填但可为 null：它携带完整的每次调用模式与工作区根目录。沙箱工具路径通过 `ctx.sandboxPolicy` 从调用会话解析它；沙箱执行器的直接调用方回退到部署策略，非沙箱执行器则携带该字段但不作限制。
--- a/packages/bash/bash/package.json
+++ b/packages/bash/bash/package.json
@@ -35,12 +35,14 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-sandbox": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  },
  "devDependencies": {
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-sandbox": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  }
 }
--- a/packages/bash/bash/src/index.ts
+++ b/packages/bash/bash/src/index.ts
@@ -6,9 +6,21 @@
 */

 import { Context, Service } from '@deepseek-ai/cordis'
+import { settingsNamespace } from '@deepseek-ai/dsh-settings'
 import type { SandboxMode } from '@deepseek-ai/dsh-sandbox'
 import type { BashExecRequest, BashExecSpec, BashProcess, BashRunResult } from './types.ts'

+/**
+ * Settings namespace of this capability, owned here rather than by either
+ * executor family because it names the capability, not an implementation: a
+ * host composes exactly one provider of `ctx.bash` (the win32 layer swaps the
+ * POSIX rows for the pwsh ones, and mounting both fails loud on a duplicate
+ * service registration), so the providers share one namespace without ever
+ * registering it twice, and a settings document carried between platforms
+ * keeps resolving on both.
+ */
+export const BASH_SETTINGS_NAMESPACE = settingsNamespace('bash')
+
 export { DSH_ENV_PREFIX } from './types.ts'
 export type {
  BashExecRequest,
--- a/packages/bash/bash/tsconfig.json
+++ b/packages/bash/bash/tsconfig.json
@@ -20,6 +20,9 @@
    {
      "path": "../../sandbox/sandbox"
    },
+    {
+      "path": "../../settings/settings"
+    },
    {
      "path": "../../support/invariants"
    }
--- a/packages/bash/pwsh-local/README.i18n.yaml
+++ b/packages/bash/pwsh-local/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/pwsh-local/README.md
-README.md: eb3365b009e3595230e5fb0f616079bd73c55840
-README.zh.md: d79201c756a26bbc343e2b284a803b0cf9aee69b
+README.md: 76f3071dc1049e2ea5929d5990ee0cb526ef702e
+README.zh.md: e773e0e83e81ffa311bd555b7a75433ba22dfd22
--- a/packages/bash/pwsh-local/README.md
+++ b/packages/bash/pwsh-local/README.md
@@ -28,8 +28,9 @@ The package root exports the default and named `PwshLocalExecutor` plugin, its `
 The Windows counterpart of `dsh-bash-local`, deliberately mirroring its semantics call-for-call:

 - **Spawn per call, no shell state** — every call is a fresh non-interactive `pwsh -Command` (deterministic; no profile files). The `-NoLogo -NoProfile -NonInteractive` flags disable startup banners, profile loading, and prompts that would garble tool output.
+- **The composition entry is a layer, not the last word** — when a settings provider is composed, this executor registers the capability's [`bash` namespace](../bash/README.md) with the entry above as its base, so a user section in `settings.yaml` layers over it and the next command runs with the new budgets. The namespace is shared with the POSIX family because a host composes exactly one provider of `ctx.bash`; a document written on either platform keeps resolving on the other. Values the schema cannot judge (positive and finite, the `graceMs` timer bound) are refused at the write, leaving the running executor on its last good section.
 - **UTF-8 output pinned** — every command runs with `[Console]::OutputEncoding` and `$OutputEncoding` set to UTF-8 first, so the Windows PowerShell 5.1 fallback (or any host whose console code page is not UTF-8) cannot garble non-ASCII output: the subprocess collector decodes bytes as UTF-8. Input encoding is left at the host default; pwsh 7 defaults to UTF-8 and is unaffected.
- **Executable resolution** — `resolvePwshPath` prefers an explicit `pwshPath`, then on Windows probes PowerShell 7's install location, every PATH entry (Microsoft Store installs; surrounding quotes stripped), and Windows PowerShell 5.1 as a legacy last resort, checking `existsSync` on each; elsewhere it falls back to a bare `pwsh` resolved through PATH. Resolution is a pure function of `(configured, env, platform)` and happens once at construction.
+- **Executable resolution** — `resolvePwshPath` prefers an explicit `pwshPath`, then on Windows probes PowerShell 7's install location, every PATH entry (Microsoft Store installs; surrounding quotes stripped), and Windows PowerShell 5.1 as a legacy last resort, checking `existsSync` on each; elsewhere it falls back to a bare `pwsh` resolved through PATH. Resolution is a pure function of `(configured, env, platform)`; it runs at construction and again only when a stored `pwshPath` differs from the one the current executable was resolved from, so an unrelated settings change never re-probes the filesystem.
 - **Configured budgets over managed groups** — `resolve()` fills `workdir`/`timeoutMs`/`stdoutMaxBytes` from config, and every spawn hands the service explicit byte caps, spill cap, and `graceMs`. The grace must be positive, finite, and no greater than [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md), so Node can represent it with one timer. Tree termination (taskkill on Windows, process-group signals on POSIX), the post-exit pipe-drain grace, tail-keep truncation, and bounded spill files are [`dsh-subprocess-local`](../../subprocess/subprocess-local/README.md) mechanics. A foreground `BashExecRequest.stdoutMaxBytes` can raise stdout's capture budget for one trusted caller; stderr and background runs still use `maxOutputBytes`.
 - **Timeout and cancel classification** — `run()` fuses its config-clamped timeout with the caller's signal through one deadline; only the executor's own timeout reports `timedOut`, an upstream cancel reports `aborted`, and a self-terminated command reports neither ([timeout-library Agent Note](../../../.agents/notes/implemented/architecture/2026-07-06-timeout-deadline-library.md)). Windows reports forced termination as exit 1 without a signal, so signal-stamped facts (`signal`, `killed` status) are POSIX-only there; the timeout/abort classification is platform-independent.
 - **Model-friendly terminal env** — `NO_COLOR=1 PAGER=cat GIT_PAGER=cat` (no `TERM=dumb`: that is a POSIX concept; `NO_COLOR` is honored by modern PowerShell renderers) merged as ordinary env under the service's credential scrub and `DSH_*` channel rules; an explicit caller entry still wins.
--- a/packages/bash/pwsh-local/README.zh.md
+++ b/packages/bash/pwsh-local/README.zh.md
@@ -28,8 +28,9 @@
 作为 `dsh-bash-local` 的 Windows 对应物，逐调用地镜像其语义：

 - **每次调用新建进程，无 shell 状态**——每次调用都是全新的非交互 `pwsh -Command`（确定性；不加载 profile 文件）。`-NoLogo -NoProfile -NonInteractive` 关闭启动横幅、profile 加载与会干扰工具输出的提示符。
+- **组装条目是一层，而不是最终值**——当组装中存在 settings 提供方时，本执行器以上面的条目为 base 注册该能力的 [`bash` 命名空间](../bash/README.md)，因此 `settings.yaml` 中的用户段会叠加其上，下一条命令即按新预算运行。该命名空间与 POSIX 家族共用，因为一个宿主只组装一个 `ctx.bash` 提供方；在任一平台写下的文档在另一平台仍能解析。schema 无法判定的值（正有限、`graceMs` 的定时器上界）会在写入时被拒绝，运行中的执行器保持它最后一份可用的段。
 - **UTF-8 输出固定**——每条命令都先以 UTF-8 设置 `[Console]::OutputEncoding` 与 `$OutputEncoding`，因此 Windows PowerShell 5.1 兜底（或任何控制台代码页非 UTF-8 的主机）不会破坏非 ASCII 输出：subprocess collector 以 UTF-8 解码字节。输入编码保持宿主默认；pwsh 7 默认为 UTF-8，不受影响。
- **可执行文件解析**——`resolvePwshPath` 优先显式 `pwshPath`，然后在 Windows 上依次探测 PowerShell 7 安装位置、每个 PATH 条目（Microsoft Store 安装；剥离两端引号）以及作为遗留兜底的 Windows PowerShell 5.1，逐一检查 `existsSync`；其他平台回退为通过 PATH 解析的裸 `pwsh`。解析是 `(configured, env, platform)` 的纯函数，在构造时执行一次。
+- **可执行文件解析**——`resolvePwshPath` 优先显式 `pwshPath`，然后在 Windows 上依次探测 PowerShell 7 安装位置、每个 PATH 条目（Microsoft Store 安装；剥离两端引号）以及作为遗留兜底的 Windows PowerShell 5.1，逐一检查 `existsSync`；其他平台回退为通过 PATH 解析的裸 `pwsh`。解析是 `(configured, env, platform)` 的纯函数；它在构造时执行，此后仅当存储的 `pwshPath` 与当前可执行文件所依据的值不同才再次执行，因此无关的设置变更绝不会重新探测文件系统。
 - **受管进程组之上的配置预算**——`resolve()` 从配置填充 `workdir`/`timeoutMs`/`stdoutMaxBytes`，每次 spawn 都向服务提供显式字节上限、spill 上限与 `graceMs`。该宽限期须为正有限值，且不得大于 [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md)，这样 Node 就能用一个定时器表示它。进程树终止（Windows 用 taskkill，POSIX 用进程组信号）、退出后管道排空宽限、保尾截断与有界 spill 文件是 [`dsh-subprocess-local`](../../subprocess/subprocess-local/README.md) 的机制。前台 `BashExecRequest.stdoutMaxBytes` 可为单个受信调用方提高 stdout 捕获预算；stderr 与后台运行仍使用 `maxOutputBytes`。
 - **超时与取消分类**——`run()` 通过一个 deadline 融合按配置上限截取的超时与调用方信号；只有执行器自身超时报告 `timedOut`，上游取消报告 `aborted`，自我终止的命令两者都不报告（见 [timeout 库 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-06-timeout-deadline-library.md)）。Windows 将强制终止报告为退出码 1 且无信号，因此带信号标记的事实（`signal`、`killed` 状态）在那里仅限 POSIX；超时/取消分类与平台无关。
 - **面向模型的终端环境**——`NO_COLOR=1 PAGER=cat GIT_PAGER=cat`（没有 `TERM=dumb`：那是 POSIX 概念；现代 PowerShell 渲染器遵循 `NO_COLOR`），作为普通 env 在服务的凭据清理与 `DSH_*` 通道规则之下合并；显式调用方条目仍然优先。
--- a/packages/bash/pwsh-local/package.json
+++ b/packages/bash/pwsh-local/package.json
@@ -36,7 +36,8 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-timeout": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  },
  "dependencies": {
    "@deepseek-ai/schemastery": "workspace:^"
@@ -47,6 +48,7 @@
    "@deepseek-ai/dsh-subprocess": "workspace:^",
    "@deepseek-ai/dsh-subprocess-local": "workspace:^",
    "@deepseek-ai/dsh-timeout": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  }
 }
--- a/packages/bash/pwsh-local/src/index.ts
+++ b/packages/bash/pwsh-local/src/index.ts
@@ -13,12 +13,16 @@
 * @module @deepseek-ai/dsh-pwsh-local
 */

+/* jscpd:ignore-start -- this executor mirrors dsh-bash-local call-for-call by
+   design (see this package's README), so the two import the same seam surface */
 import { Context } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
-import { BashExecutor } from '@deepseek-ai/dsh-bash'
+import { BASH_SETTINGS_NAMESPACE, BashExecutor } from '@deepseek-ai/dsh-bash'
 import type { BashExecRequest, BashExecSpec, BashProcess, BashProcessRead, BashRunResult, CollectedOutput } from '@deepseek-ai/dsh-bash'
 import type { SubprocessCollect, SubprocessHandle, SubprocessOutputReader, SubprocessSpawnSpec } from '@deepseek-ai/dsh-subprocess'
+import { installSettingsSection } from '@deepseek-ai/dsh-settings'
 import { clampTimeout, deadline, MAX_TIMER_DELAY_MS, timeoutOf } from '@deepseek-ai/dsh-timeout'
+/* jscpd:ignore-end */
 import { resolvePwshPath } from './resolve.ts'

 /* jscpd:ignore-start -- deliberate call-for-call mirror of dsh-bash-local (Agent Note: pwsh-tool-and-executor). */
@@ -96,6 +100,26 @@ function assertPositiveFinite(name: string, value: number): void {
  }
 }

+/**
+ * Reject a resolved section this executor could not run with. The schema
+ * expresses neither "positive and finite" nor the timer bound `graceMs` has to
+ * fit, so a stored value is refused where it is written instead of failing at
+ * the next command.
+ * @param config - the resolved section, schema-valid by construction.
+ * @throws Error naming the field that cannot be used.
+ */
+export function assertServiceablePwshConfig(config: Config): void {
+  const resolved = config as ResolvedConfig
+  assertPositiveFinite('timeoutMs', resolved.timeoutMs)
+  assertPositiveFinite('maxTimeoutMs', resolved.maxTimeoutMs)
+  assertPositiveFinite('maxOutputBytes', resolved.maxOutputBytes)
+  assertPositiveFinite('maxSpillBytes', resolved.maxSpillBytes)
+  assertPositiveFinite('graceMs', resolved.graceMs)
+  if (resolved.graceMs > MAX_TIMER_DELAY_MS) {
+    throw new Error(`pwsh-local: graceMs must be no greater than ${MAX_TIMER_DELAY_MS}`)
+  }
+}
+
 /**
 * Local PowerShell executor over `ctx.subprocess`. Bounded output, spill
 * files, and process-tree termination are the subprocess service's mechanics;
@@ -114,25 +138,47 @@ export class PwshLocalExecutor extends BashExecutor {
    pwshPath: z.string(),
  })

-  /** Validated config (schemastery applied the defaults before construction). */
-  readonly config: ResolvedConfig
+  /** The currently authoritative config: the settings section, or the composition entry. */
+  private source: () => ResolvedConfig

-  /** The pwsh executable resolved once at construction. */
-  readonly pwshPath: string
+  /** The declared executable the current {@link pwshPath} was resolved from. */
+  private declaredPwshPath: string | undefined
+
+  /** The pwsh executable resolved from the current config. */
+  private resolvedPwshPath: string
+
+  /** Validated config (schemastery applied the defaults before construction). */
+  get config(): ResolvedConfig {
+    return this.source()
+  }
+
+  /** The pwsh executable every command runs through. */
+  get pwshPath(): string {
+    return this.resolvedPwshPath
+  }

  constructor(ctx: Context, config: Config) {
    super(ctx)
    // Schemastery fills these fields before construction; the type does not encode that step.
-    this.config = config as ResolvedConfig
-    assertPositiveFinite('timeoutMs', this.config.timeoutMs)
-    assertPositiveFinite('maxTimeoutMs', this.config.maxTimeoutMs)
-    assertPositiveFinite('maxOutputBytes', this.config.maxOutputBytes)
-    assertPositiveFinite('maxSpillBytes', this.config.maxSpillBytes)
-    assertPositiveFinite('graceMs', this.config.graceMs)
-    if (this.config.graceMs > MAX_TIMER_DELAY_MS) {
-      throw new Error(`pwsh-local: graceMs must be no greater than ${MAX_TIMER_DELAY_MS}`)
-    }
-    this.pwshPath = resolvePwshPath(this.config.pwshPath)
+    const entry = config as ResolvedConfig
+    assertServiceablePwshConfig(entry)
+    this.source = () => entry
+    this.declaredPwshPath = entry.pwshPath
+    this.resolvedPwshPath = resolvePwshPath(entry.pwshPath)
+    installSettingsSection(ctx, BASH_SETTINGS_NAMESPACE, PwshLocalExecutor.Config, entry, {
+      validate: assertServiceablePwshConfig,
+      setSource: (current) => {
+        this.source = current as () => ResolvedConfig
+      },
+      // Probing the filesystem is the one fact derived from the source: every
+      // other field is read through the getter at each command.
+      onChange: () => {
+        const declared = this.source().pwshPath
+        if (declared === this.declaredPwshPath) return
+        this.declaredPwshPath = declared
+        this.resolvedPwshPath = resolvePwshPath(declared)
+      },
+    })
  }

  /**
--- a/packages/bash/pwsh-local/tests/settings.spec.ts
+++ b/packages/bash/pwsh-local/tests/settings.spec.ts
@@ -0,0 +1,108 @@
+/** The shared `bash` settings section as the pwsh executor family resolves it. */
+
+import { describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import type { Fiber } from '@deepseek-ai/cordis'
+import { Settings } from '@deepseek-ai/dsh-settings'
+import type { SettingsNamespace } from '@deepseek-ai/dsh-settings'
+import { BASH_SETTINGS_NAMESPACE } from '@deepseek-ai/dsh-bash'
+import LocalSubprocessService from '@deepseek-ai/dsh-subprocess-local'
+import { PwshLocalExecutor } from '@deepseek-ai/dsh-pwsh-local'
+
+/** The smallest real provider: one in-memory document, always writable. */
+class MemorySettings extends Settings {
+  doc: Record<string, unknown> = {}
+
+  get writable(): boolean {
+    return true
+  }
+
+  protected load(): Promise<Record<string, unknown>> {
+    return Promise.resolve(structuredClone(this.doc))
+  }
+
+  protected persist(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
+    this.doc = { ...this.doc, [ns]: structuredClone(section) }
+    return Promise.resolve()
+  }
+}
+
+async function boot(config: ConstructorParameters<typeof PwshLocalExecutor>[1] = {}): Promise<{
+  ctx: Context
+  settingsFiber: Fiber
+  executorFiber: Fiber
+  pwsh: PwshLocalExecutor
+}> {
+  const ctx = new Context()
+  await ctx.plugin(LocalSubprocessService)
+  const settingsFiber = ctx.plugin(MemorySettings)
+  await settingsFiber.await()
+  const executorFiber = ctx.plugin(PwshLocalExecutor, { timeoutMs: 60_000, ...config })
+  await executorFiber.await()
+  return { ctx, settingsFiber, executorFiber, pwsh: ctx.bash as PwshLocalExecutor }
+}
+
+describe('pwsh executor over the bash settings section', () => {
+  it('resolves the user layer over the composition entry', async () => {
+    const bench = await boot()
+    expect(bench.pwsh.config.timeoutMs).toBe(60_000)
+
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 5_000 })
+
+    expect(bench.pwsh.config.timeoutMs).toBe(5_000)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('refuses a stored value the constructor would have rejected', async () => {
+    const bench = await boot()
+
+    await expect(bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 0 }))
+      .rejects.toThrow(/pwsh-local: timeoutMs must be a positive finite number/)
+
+    expect(bench.pwsh.config.timeoutMs).toBe(60_000)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('re-resolves the executable when the stored path changes', async () => {
+    const bench = await boot({ pwshPath: '/opt/first/pwsh' })
+    expect(bench.pwsh.pwshPath).toBe('/opt/first/pwsh')
+
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { pwshPath: '/opt/second/pwsh' })
+
+    expect(bench.pwsh.pwshPath).toBe('/opt/second/pwsh')
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('keeps the resolved executable when an unrelated field changes', async () => {
+    const bench = await boot({ pwshPath: '/opt/first/pwsh' })
+    const before = bench.pwsh.pwshPath
+
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 5_000 })
+
+    expect(bench.pwsh.pwshPath).toBe(before)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('falls back to the composition entry when the settings provider detaches', async () => {
+    const bench = await boot({ pwshPath: '/opt/first/pwsh' })
+    await bench.ctx.settings.update(BASH_SETTINGS_NAMESPACE, { timeoutMs: 5_000, pwshPath: '/opt/second/pwsh' })
+    expect(bench.pwsh.config.timeoutMs).toBe(5_000)
+    expect(bench.pwsh.pwshPath).toBe('/opt/second/pwsh')
+
+    await bench.settingsFiber.dispose()
+
+    expect(bench.pwsh.config.timeoutMs).toBe(60_000)
+    expect(bench.pwsh.pwshPath).toBe('/opt/first/pwsh')
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('releases the namespace when the executor unloads', async () => {
+    const bench = await boot()
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).toContain('bash')
+
+    await bench.executorFiber.dispose()
+
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).not.toContain('bash')
+    await bench.ctx.fiber.dispose()
+  })
+})
--- a/packages/bash/pwsh-local/tsconfig.json
+++ b/packages/bash/pwsh-local/tsconfig.json
@@ -29,6 +29,9 @@
    {
      "path": "../../subprocess/subprocess"
    },
+    {
+      "path": "../../settings/settings"
+    },
    {
      "path": "../../support/invariants"
    }
--- a/packages/bundle/web-app/cordis.patch.yml
+++ b/packages/bundle/web-app/cordis.patch.yml
@@ -227,6 +227,11 @@
    - id: ui-agent-preset
      name: '@deepseek-ai/dsh-client-ui-agent-preset'

+    # Plugin configuration: the host-plane sections a user owns, as expandable
+    # cards. A namespace this deployment does not expose renders nothing.
+    - id: ui-plugin-config
+      name: '@deepseek-ai/dsh-client-ui-plugin-config'
+
    # Plan control: the composer plan seat over the plan projection + /plan channel.
    - id: ui-plan
      name: '@deepseek-ai/dsh-client-ui-plan'
--- a/packages/bundle/web-app/package.json
+++ b/packages/bundle/web-app/package.json
@@ -45,12 +45,12 @@
  },
  "dependencies": {
    "@deepseek-ai/dsh-agent-presets": "workspace:^",
+    "@deepseek-ai/dsh-api-remotes": "workspace:^",
    "@deepseek-ai/dsh-app-boot": "workspace:^",
    "@deepseek-ai/dsh-client-connection": "workspace:^",
    "@deepseek-ai/dsh-client-hmr": "workspace:^",
    "@deepseek-ai/dsh-client-locale": "workspace:^",
    "@deepseek-ai/dsh-client-modules": "workspace:^",
-    "@deepseek-ai/dsh-api-remotes": "workspace:^",
    "@deepseek-ai/dsh-client-runtime": "workspace:^",
    "@deepseek-ai/dsh-client-ui-agent-preset": "workspace:^",
    "@deepseek-ai/dsh-client-ui-command": "workspace:^",
@@ -62,6 +62,7 @@
    "@deepseek-ai/dsh-client-ui-models": "workspace:^",
    "@deepseek-ai/dsh-client-ui-permission": "workspace:^",
    "@deepseek-ai/dsh-client-ui-plan": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-plugin-config": "workspace:^",
    "@deepseek-ai/dsh-client-ui-question": "workspace:^",
    "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
    "@deepseek-ai/dsh-client-ui-settings-general": "workspace:^",
--- a/packages/client/README.i18n.yaml
+++ b/packages/client/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/README.md
-README.md: a349b79783fae8fcfc9b3af7d3e96de779514d01
-README.zh.md: 342442001bd268048de901233fc1913027b6d70f
+README.md: 75abe408952ed66dcc237ce489e417f61159bcc3
+README.zh.md: 5432efcb0a5ebc410093da4c3ec6c2e07c4520ca
--- a/packages/client/README.md
+++ b/packages/client/README.md
@@ -35,6 +35,7 @@ The browser side of the dsh web GUI: shell boot, browser-host communication, sha
 | [`ui-model/`](ui-model/README.md) | Provides model selection in conversation surfaces. |
 | [`ui-permission/`](ui-permission/README.md) | Configures default permissions and switches the current session's access. |
 | [`ui-plan/`](ui-plan/README.md) | Presents active plan-mode status and its exit control. |
+| [`ui-plugin-config/`](ui-plugin-config/README.md) | The Plugins settings section: host-plane plugin configuration as expandable cards. |
 | [`ui-question/`](ui-question/README.md) | Presents interactive questions requested by the agent. |
 | [`ui-agent-preset/`](ui-agent-preset/README.md) | Selects a session's agent preset and authors preset compositions. |
 | [`ui-settings/`](ui-settings/README.md) | Hosts the settings interface and its extension areas. |
--- a/packages/client/README.zh.md
+++ b/packages/client/README.zh.md
@@ -35,6 +35,7 @@ dsh web GUI 的浏览器侧：shell 启动、浏览器与宿主通信、共享 U
 | [`ui-model/`](ui-model/README.md) | 在会话界面中提供模型选择。 |
 | [`ui-permission/`](ui-permission/README.md) | 配置默认权限并切换当前会话的访问模式。 |
 | [`ui-plan/`](ui-plan/README.md) | 展示生效中的 plan mode 状态及其退出控件。 |
+| [`ui-plugin-config/`](ui-plugin-config/README.md) | 插件设置分区：把宿主平面的插件配置呈现为可展开卡片。 |
 | [`ui-question/`](ui-question/README.md) | 展示 agent 请求的交互式问题。 |
 | [`ui-agent-preset/`](ui-agent-preset/README.md) | 选择会话的 agent 预设，并创作预设组装。 |
 | [`ui-settings/`](ui-settings/README.md) | 承载设置界面及其扩展区域。 |
--- a/packages/client/runtime/README.i18n.yaml
+++ b/packages/client/runtime/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/runtime/README.md
-README.md: be04f56ac5151c756aa6d4e2233461cc173fe261
-README.zh.md: 372922b8b02f694512505c97bf08b9ab480912a5
+README.md: bcc1b070535046ab2af1878f763c806aada49ba0
+README.zh.md: 7a5d651c862d9f9682688f71a9bdf7d6b22f3e63
--- a/packages/client/runtime/README.md
+++ b/packages/client/runtime/README.md
@@ -4,7 +4,8 @@ English | [中文](README.zh.md)

 Client cordis boot and React-free object services: SlotsService wraps SlotCore and supplies renderer data sources; SessionsService owns Session objects, list and scope state, and the shared event window and history paging used by registered conversation view targets. WorkspacesService depends on SessionsService and owns Workspace objects, list/actions, default-target derivation, and the New Session blank-reuse entry (`connectWorkspace`). The runtime fans the shared Host stream into Session and Workspace owners and hands each generic `host/remote-event` frame to `ctx.remote.$dispatch`; domain packages subscribe to their owner events through `ctx.remote.$on` and decide which caches or session rows they invalidate. Client sessions are always Host-born (Session+Agent+cwd in one `session.create`); the client holds no pre-entity session state — a session's Agent scope (the client mirror of host dsh-scope, keyed by the shared agent/session id) is born when its row enters the list mirror and dies with the prune. Contract: api-contracts v3 §4. Each `Session` holds a generic `ProjectionValueStore` seeded from the history-tail `projections` block and updated by `session/projection` frames under higher-seq-wins; domain keys (including `todos`) are read via `projections.faceOf` / `useProjection`, not via `ConversationSnapshot`. The store also publishes one reference-stable whole-value map through `SessionSummary.projectionValues`, allowing global list consumers to reuse the same projections without creating per-session subscriptions.

-`bindSettingsScope` is the browser mirror of the Host-side settings owner seam for one domain-owned namespace. It subscribes before starting a nonblocking initial read, publishes a uSES snapshot (status, section value, revision, writability, host/memory mode), serializes `set` writes with the latest known namespace revision, suppresses stale publications, recovers a rejected latest write from Host state, and reaches quiescence on plugin disposal. The default decoder validates each section against the namespace's own serialized wire schema (rehydrated through dsh-client-schema-form), so a domain adds a decoder only to narrow beyond that schema. Loopback pages use the Host settings API; remote pages stay in memory mode. Domain packages own the namespace schema, default, and live service rather than putting product policy in runtime.
+`bindSettingsScope` is the browser mirror of the Host-side settings owner seam for one domain-owned namespace. It subscribes before starting a nonblocking initial read, publishes a uSES snapshot (status, section value, the composition `base` and raw `user` layers, revision, writability, host/memory mode), serializes `set` and `unset` writes with the latest known namespace revision, suppresses stale publications, recovers a rejected latest write from Host state, and reaches quiescence on plugin disposal. The default decoder validates each section against the namespace's own serialized wire schema (rehydrated through dsh-client-schema-form), so a domain adds a decoder only to narrow beyond that schema. Loopback pages use the Host settings API; remote pages stay in memory mode. A field is overridden when it is PRESENT in `user` — an override equal to the composition default is still an override, which comparing values could not see — and `unset` is how a form clears one back to `base`. Domain packages own the namespace schema, default, and live service rather than putting product policy in runtime.
+
 ## Slot declaration injection

 `ctx.slots.inject(name, callback)` makes a full `SlotMap` key the dependency for a contribution whose plugin can activate independently from the declaring entry. It runs `callback` synchronously when the declaration exists, otherwise waits; declaration collapse disposes the callback effect, and redeclaration reruns it. The controller belongs to the caller's plugin fiber, so unloading the contributor cancels either the wait or its active registrations. A direct `slots.register()` into an undeclared slot still throws.
--- a/packages/client/runtime/README.zh.md
+++ b/packages/client/runtime/README.zh.md
@@ -4,7 +4,8 @@

 客户端 cordis 启动与不依赖 React 的对象服务：SlotsService 包装 SlotCore 并提供 renderer 数据源；SessionsService 拥有 Session 对象、列表与 scope 状态，以及供已注册 conversation view target 共用的事件窗口与历史分页。WorkspacesService 依赖 SessionsService，拥有 Workspace 对象、列表／操作、默认目标派生，以及 New Session 空会话复用入口（`connectWorkspace`）。运行时把共享 Host 流分发给 Session 与 Workspace 所有者，并把每个通用 `host/remote-event` 帧交给 `ctx.remote.$dispatch`；各领域包通过 `ctx.remote.$on` 订阅自身 owner 事件，并自行决定使哪些缓存或会话行失效。客户端会话一律由 Host 创建（一次 `session.create` 同时产生 Session、agent（智能体）和 cwd）；客户端不持有任何实体化之前的会话状态——agent scope（host dsh-scope 的客户端镜像，以 agent/session 共用 id 为键）在会话行进入列表镜像时创建，并随 prune 销毁。约定：api-contracts v3 §4。每个 `Session` 持有一个通用的 `ProjectionValueStore`，由历史记录尾部的 `projections` 块播种，并经 `session/projection` 帧按 seq 高者胜更新；领域键（含 `todos`）经 `projections.faceOf`／`useProjection` 读取，不经 `ConversationSnapshot`。该 store 还会通过 `SessionSummary.projectionValues` 发布一份引用稳定的完整值映射，使全局列表消费方无需为每个会话创建订阅，即可复用同一组投影。

-`bindSettingsScope` 面向单个由领域持有的 namespace，是 Host 侧 settings owner seam 的浏览器镜像。它在开始非阻塞初始读取前建立订阅，发布 uSES 快照（状态、分节值、revision、可写性、host／内存模式），使用已知最新 namespace revision 串行执行 `set` 写入，抑制陈旧发布，并在最新写入被拒时从 Host 状态恢复；插件释放时，它会达到完全停稳。默认解码器会对照该 namespace 自身的序列化 wire schema（经 dsh-client-schema-form 还原）校验每个分节，因此领域只有在需要比该 schema 进一步收窄时才添加解码器。回环页面使用 Host settings API，远程页面则停留在内存模式。namespace schema、默认值与实时服务归领域包所有，而非把产品政策放入运行时。
+`bindSettingsScope` 面向单个由领域持有的 namespace，是 Host 侧 settings owner seam 的浏览器镜像。它在开始非阻塞初始读取前建立订阅，发布 uSES 快照（状态、分节值、组装 `base` 层与原始 `user` 层、revision、可写性、host／内存模式），使用已知最新 namespace revision 串行执行 `set` 与 `unset` 写入，抑制陈旧发布，并在最新写入被拒时从 Host 状态恢复；插件释放时，它会达到完全停稳。默认解码器会对照该 namespace 自身的序列化 wire schema（经 dsh-client-schema-form 还原）校验每个分节，因此领域只有在需要比该 schema 进一步收窄时才添加解码器。回环页面使用 Host settings API，远程页面则停留在内存模式。字段是否被覆盖，取决于它是否**出现**在 `user` 中——与组装默认值相同的覆盖仍然是覆盖，比较值是看不出来的——而 `unset` 就是表单把某个字段清回 `base` 的方式。namespace schema、默认值与实时服务归领域包所有，而非把产品政策放入运行时。
+
 ## Slot 声明注入

 `ctx.slots.inject(name, callback)` 将完整的 `SlotMap` key 作为贡献项的依赖，适用于贡献方插件可独立于声明条目激活的情形。声明存在时，它会同步运行 `callback`，否则等待；声明折叠会 dispose（资源释放）回调 effect，重新声明则会再次运行回调。控制器归调用方的插件 fiber 所有，因此卸载贡献方会取消等待或移除其活跃注册项。直接调用 `slots.register()` 向未声明 slot 注册仍会抛出异常。
--- a/packages/client/runtime/src/client/contract/settings-scope.ts
+++ b/packages/client/runtime/src/client/contract/settings-scope.ts
@@ -17,6 +17,17 @@ export interface SettingsScopeSnapshot<T> {
  status: 'loading' | 'ready' | 'unavailable'
  /** Last accepted schema-resolved section; undefined before the first acceptance. */
  value: T | undefined
+  /**
+   * Composition layer the Host resolved {@link value} over, when the owning
+   * plugin declared one. What a field reverts to once cleared.
+   */
+  base: unknown
+  /**
+   * Raw user layer as stored, when one exists. A field's PRESENCE here is what
+   * marks it overridden — an override whose value equals the composition
+   * default is still an override, and comparing values could not see it.
+   */
+  user: unknown
  /** Namespace revision fencing the next write; undefined before the first Host view. */
  revision: number | undefined
  /** Whether the Host document accepts writes; memory mode never does. */
@@ -60,4 +71,11 @@ export interface SettingsScope<T> {
   * @returns settlement after the write and any latest-write recovery read.
   */
  set(field: string, value: unknown): Promise<void>
+  /**
+   * Queue one field clear, so the field re-inherits the composition layer.
+   * Shares {@link set}'s ordering, revision, and recovery contract.
+   * @param field - scalar field inside the namespace section.
+   * @returns settlement after the clear and any latest-write recovery read.
+   */
+  unset(field: string): Promise<void>
 }
--- a/packages/client/test-runtime/src/settings-scope.ts
+++ b/packages/client/test-runtime/src/settings-scope.ts
@@ -8,6 +8,8 @@ export interface StubSettingsScope<T> {
  scope: SettingsScope<T>
  /** Spy behind `scope.set`; resolves immediately. */
  set: ReturnType<typeof vi.fn>
+  /** Spy behind `scope.unset`; resolves immediately. */
+  unset: ReturnType<typeof vi.fn>
  /** @returns how many listeners are currently subscribed (disposal assertions). */
  listenerCount(): number
  /**
@@ -25,10 +27,12 @@ export interface StubSettingsScope<T> {
 */
 export function stubSettingsScope<T>(): StubSettingsScope<T> {
  let snapshot: SettingsScopeSnapshot<T> = {
-    status: 'loading', value: undefined, revision: undefined, writable: false, mode: 'host',
+    status: 'loading', value: undefined, base: undefined, user: undefined,
+    revision: undefined, writable: false, mode: 'host',
  }
  const listeners = new Set<() => void>()
  const set = vi.fn(() => Promise.resolve())
+  const unset = vi.fn(() => Promise.resolve())
  return {
    scope: {
      getSnapshot: () => snapshot,
@@ -37,8 +41,10 @@ export function stubSettingsScope<T>(): StubSettingsScope<T> {
        return () => { listeners.delete(listener) }
      },
      set,
+      unset,
    },
    set,
+    unset,
    listenerCount: () => listeners.size,
    publish: (next) => {
      snapshot = { ...snapshot, ...next }
--- a/packages/client/test-runtime/tests/runtime.spec.tsx
+++ b/packages/client/test-runtime/tests/runtime.spec.tsx
@@ -7,6 +7,7 @@
 * stack — this suite is the fixture the migrated feature specs rely on.
 */
 import { afterEach, describe, expect, it, vi } from 'vitest'
+import { stubSettingsScope } from '../src/settings-scope.ts'
 import { cleanup } from '@testing-library/react'
 import { defineStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId, WorkspaceId } from '@deepseek-ai/dsh-client-runtime/client'
@@ -635,3 +636,32 @@ describe('single-slot mounting edge arms', () => {
    await runtime.dispose()
  })
 })
+
+describe('stubbed settings scope', () => {
+  it('records both write kinds and publishes a Host acceptance to its listeners', async () => {
+    const host = stubSettingsScope<{ preference: string }>()
+    let notified = 0
+    const stop = host.scope.subscribe(() => { notified += 1 })
+    expect(host.listenerCount()).toBe(1)
+    expect(host.scope.getSnapshot()).toMatchObject({
+      status: 'loading', base: undefined, user: undefined,
+    })
+
+    await host.scope.set('preference', 'dark')
+    await host.scope.unset('preference')
+    host.publish({
+      status: 'ready',
+      value: { preference: 'system' },
+      base: { preference: 'system' },
+      revision: 2,
+      writable: true,
+    })
+
+    expect(host.set).toHaveBeenCalledWith('preference', 'dark')
+    expect(host.unset).toHaveBeenCalledWith('preference')
+    expect(notified).toBe(1)
+    expect(host.scope.getSnapshot()).toMatchObject({ status: 'ready', revision: 2, writable: true })
+    stop()
+    expect(host.listenerCount()).toBe(0)
+  })
+})
--- a/packages/client/ui-plugin-config/README.i18n.yaml
+++ b/packages/client/ui-plugin-config/README.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/client/ui-plugin-config/README.md
+README.md: 7e530d70f6573d619378e43b0245345b45d6db18
+README.zh.md: fd4f980fcf71c00c2357017fb40c76a9ca7a72cc
--- a/packages/client/ui-plugin-config/README.md
+++ b/packages/client/ui-plugin-config/README.md
@@ -0,0 +1,40 @@
+# dsh-client-ui-plugin-config
+
+English | [中文](README.zh.md)
+
+The **Plugins** settings section: one expandable card per Host plugin whose configuration a user owns. A card shows the plugin's name and what it governs; expanding it in place reveals hand-written controls bound to that plugin's settings namespace, each field marking whether the user overrode it and offering a reset back to the value the deployment composed.
+
+## What appears here
+
+A card renders only when its namespace is both registered by a live Host plugin and served to the browser. A deployment that does not compose the owning plugin — or serves the namespace to no client — renders nothing for it rather than an empty or disabled card, so the section reflects what this deployment actually runs.
+
+The first batch covers the shell executor (`bash`), the agent loop's tool-call parallelism (`agent-loop`), and the DeepSeek search provider (`web-search-deepseek`).
+
+## Extension point
+
+The section declares `settings.plugin.item`, a root list slot. A plugin that ships a browser half registers its own card into that slot and owns its controls; this package neither enumerates namespaces nor renders a form it was not given. Ordering follows the slot's `order`.
+
+## Writes
+
+A card stages what the user types and writes it only when they save. Each control renders staged text, so what is on screen is exactly what a save would store; **Discard** drops the drafts, and a card holding unsaved edits says so on its header even while collapsed. A reset stages the composed default rather than writing immediately, and a draft the field does not accept blocks the save instead of being dropped.
+
+Saving writes each staged field through the client settings scope, which fences every write with the namespace revision it read, so a form that has drifted from the document is refused rather than overwriting a concurrent change. The Host is the only authority on whether a value was accepted — its validators own the constraints no schema can express — so the card reads the section back afterwards and reports a save that did not land, keeping those drafts for the user to correct.
+
+A key can also be written from another surface — the Models page addresses the same reference — which changes no settings section, so the card re-reads on the forwarded `credentials/updated` event for the reference it watches.
+
+A field's presence in the raw user layer — not its value — is what marks it overridden; a reset clears that field so it re-inherits the composition layer. Secret-role fields never ride a response, so a key control starts blank, reports only whether one is configured, and writes through the credentials domain rather than the settings section; a blank draft writes nothing and keeps the stored key.
+
+## Model Experience
+
+None, as the section renders a browser configuration UI; the values it writes reach a model only through the plugins that own them, each documenting that effect itself.
+
+#### KV Cache effect
+
+None; this package neither assembles nor sends a provider request.
+
+## Known Limitations and Deferred Work
+
+- **Only host-plane plugins appear** — a plugin an agent preset mounts carries its configuration inline in that preset's `agent.cordis.yml` and cannot register a settings namespace at all (a second session mounting the same preset would fail on a duplicate registration), so this section lists nothing for it. Editing those values remains the preset editor's job.
+- **Exposure is a Host allowlist, not a plugin declaration** — a namespace absent from the api-proxy's allowlist answers `settings-not-exposed` even when its owner registered it, so a plugin distributed outside this repository cannot surface its own configuration here without a change in `packages/host/apiproxy`.
+- **The shell card follows the composed executor** — the POSIX and PowerShell executor families share the `bash` namespace because a host composes exactly one of them, so the served schema differs by platform (PowerShell adds `pwshPath`) even though the card edits the same two fields on both, and a deployment composing neither shows no card.
+- **The empty line counts registered cards, not visible ones** — a card whose namespace this deployment does not expose renders nothing, but still counts, so a deployment that exposes none shows an empty list rather than the empty line. The count is also read once, because the renderer caches a root entry's inject face; a card registered later does not raise it.
--- a/packages/client/ui-plugin-config/README.zh.md
+++ b/packages/client/ui-plugin-config/README.zh.md
@@ -0,0 +1,40 @@
+# dsh-client-ui-plugin-config
+
+[English](README.md) | 中文
+
+**插件**设置分区：每个配置由用户拥有的 Host 插件占一张可展开卡片。卡片展示插件名称及其管辖范围；就地展开后是绑定到该插件 settings 命名空间的手写控件，每个字段标注用户是否覆盖过它，并提供重置回部署组装值的入口。
+
+## 这里会出现什么
+
+只有当某个命名空间既被存活的 Host 插件注册、又被服务给浏览器时，它的卡片才会渲染。未组装该插件的部署——或未向任何客户端服务该命名空间的部署——不会渲染空卡片或禁用卡片，而是什么都不渲染，因此这一分区反映的是该部署实际运行的东西。
+
+第一批覆盖 shell 执行器（`bash`）、agent 循环的工具调用并行度（`agent-loop`）以及 DeepSeek 搜索提供方（`web-search-deepseek`）。
+
+## 扩展点
+
+本分区声明了根级列表 slot `settings.plugin.item`。带浏览器半侧的插件把自己的卡片注册进该 slot 并拥有其控件；本包既不枚举命名空间，也不渲染未被交给它的表单。排序遵循 slot 的 `order`。
+
+## 写入
+
+卡片暂存用户输入，只有用户保存时才写入。每个控件渲染的都是暂存文本，因此屏幕上所见即保存后所存；**放弃修改**丢弃这些草稿，持有未保存修改的卡片即使收起也会在标题上标明。重置暂存的是组装默认值而非立即写入；字段不接受的草稿会阻塞保存，而不是被丢弃。
+
+保存时，每个暂存字段都通过客户端 settings scope 写入，该 scope 用读取时的命名空间 revision 为每次写入设栅，因此已与文档脱节的表单会被拒绝，而不是覆盖并发变更。某个值是否被接受只有 Host 说了算——schema 表达不了的约束归它的校验器所有——因此卡片在写入后回读分节，报告没有落盘的保存，并保留这些草稿供用户修改。
+
+密钥也可能从别的表层写入——模型页寻址的是同一个引用——而那不改变任何 settings 分节，因此卡片会在转发来的 `credentials/updated` 事件报告它所关注的引用时重读。
+
+字段是否被覆盖，取决于它是否出现在原始用户层中，而非取决于它的值；重置会清除该字段，使其重新继承组装层。secret 角色的字段绝不搭乘响应，因此密钥控件初始为空、只报告是否已配置，并经由 credentials 领域而非 settings 分节写入；空草稿不写入任何东西，保留已存密钥。
+
+## 模型体验
+
+无。该分区渲染浏览器配置 UI；它写入的值只通过拥有这些值的插件到达模型，而这些效应各由其拥有方的包记录。
+
+#### KV Cache 影响
+
+无；该包既不组装也不发送提供方请求。
+
+## 已知限制与暂缓事项
+
+- **只有宿主平面的插件会出现**——由 agent preset 挂载的插件把配置内联在该 preset 的 `agent.cordis.yml` 中，且根本无法注册 settings 命名空间（同一 preset 挂载第二个会话时会因重复注册而失败），因此本分区不会列出它。编辑那些值仍是 preset 编辑器的职责。
+- **暴露是 Host 的白名单，而非插件的声明**——不在 api-proxy 白名单中的命名空间，即便其拥有方已注册，也只会得到 `settings-not-exposed`，因此在本仓库之外分发的插件无法在不改动 `packages/host/apiproxy` 的前提下让自己的配置出现在这里。
+- **shell 卡片跟随被组装的执行器**——POSIX 与 PowerShell 两个执行器家族共用 `bash` 命名空间，因为一个宿主只组装其中之一，所以被服务的 schema 随平台不同（PowerShell 多出 `pwshPath`），尽管卡片在两者下编辑的都是同样两个字段；而两者都不组装的部署不会显示这张卡片。
+- **空态数的是已注册卡片，不是可见卡片**——命名空间未被本部署暴露的卡片什么都不渲染，但仍计入数量，因此一个都不暴露的部署看到的是空列表而非那行空态文案。该计数还只读取一次，因为渲染器会缓存根级 entry 的 inject face；之后注册的卡片不会让它变大。
--- a/packages/client/ui-plugin-config/package.json
+++ b/packages/client/ui-plugin-config/package.json
@@ -0,0 +1,86 @@
+{
+  "name": "@deepseek-ai/dsh-client-ui-plugin-config",
+  "description": "Plugin configuration section: host-plane plugin settings as expandable cards",
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-plugin-config"
+  },
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./client": {
+      "types": "./lib/types/client/index.d.ts",
+      "default": "./lib/client.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-connection",
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-runtime",
+        "@deepseek-ai/dsh-client-ui-settings",
+        "@deepseek-ai/dsh-api-remotes"
+      ],
+      "platform": "web"
+    }
+  },
+  "scripts": {
+    "bundle": "tsdown",
+    "watch": "tsdown --watch"
+  },
+  "license": "BSD-3-Clause",
+  "peerDependencies": {
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-api-remotes": "workspace:^",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-client-web-react": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "react": "^18.2.0"
+  },
+  "devDependencies": {
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-api-remotes": "workspace:^",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-client-web-react": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@types/react": "~18.3.1",
+    "react": "^18.2.0"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/client.js",
+    "lib/types/**/*.d.ts"
+  ],
+  "dependencies": {
+    "clsx": "^2.0.0"
+  }
+}
--- a/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx
@@ -0,0 +1,47 @@
+/** The agent loop's card: how many tool calls one step may run at once. */
+
+import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import { ValueField } from './fields.tsx'
+import { PluginCard } from './PluginCard.tsx'
+import type { AgentLoopCardFace } from './agent-loop-store.ts'
+import type {} from './slot-contract.ts'
+
+/** Props the renderer binds for the agent-loop card. */
+export type AgentLoopCardProps =
+  PropsRuntime<'settings.plugin.item'>
+  & PropsLocale<'settings.pluginConfig'>
+  & InjectFace<AgentLoopCardFace>
+
+/**
+ * Render the agent-loop card.
+ * @param props - locale copy, the card snapshot, and its form actions.
+ * @returns the card.
+ */
+export function AgentLoopCard(props: AgentLoopCardProps) {
+  const { t } = props
+  const state = props.useAgentLoopCard(snapshot => snapshot)
+  return (
+    <PluginCard
+      t={t}
+      titleKey="agentLoopTitle"
+      descriptionKey="agentLoopDescription"
+      state={state}
+      onSave={props.save}
+      onDiscard={props.discard}
+    >
+      <ValueField
+        id="plugin-config-agent-loop-parallel"
+        label={t('agentLoopMaxParallel')}
+        hint={t('agentLoopMaxParallelHint')}
+        overriddenLabel={t('overridden')}
+        resetLabel={t('reset')}
+        invalidLabel={t('invalidNumber')}
+        numeric
+        disabled={!state.writable}
+        {...state.maxParallelToolCalls}
+        onEdit={(text) => { props.edit('maxParallelToolCalls', text) }}
+        onReset={() => { props.resetField('maxParallelToolCalls') }}
+      />
+    </PluginCard>
+  )
+}
--- a/packages/client/ui-plugin-config/src/client/BashCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/BashCard.tsx
@@ -0,0 +1,61 @@
+/** The shell plugin's card: the limits every command the agent runs is bound by. */
+
+import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import { ValueField } from './fields.tsx'
+import { PluginCard } from './PluginCard.tsx'
+import type { BashCardFace } from './bash-store.ts'
+import type {} from './slot-contract.ts'
+
+/** Props the renderer binds for the shell card. */
+export type BashCardProps =
+  PropsRuntime<'settings.plugin.item'>
+  & PropsLocale<'settings.pluginConfig'>
+  & InjectFace<BashCardFace>
+
+/**
+ * Render the shell card.
+ * @param props - locale copy, the card snapshot, and its form actions.
+ * @returns the card.
+ */
+export function BashCard(props: BashCardProps) {
+  const { t } = props
+  const state = props.useBashCard(snapshot => snapshot)
+  const disabled = !state.writable
+  return (
+    <PluginCard
+      t={t}
+      titleKey="bashTitle"
+      descriptionKey="bashDescription"
+      state={state}
+      onSave={props.save}
+      onDiscard={props.discard}
+    >
+      <ValueField
+        id="plugin-config-bash-timeout"
+        label={t('bashTimeoutMs')}
+        hint={t('bashTimeoutMsHint')}
+        overriddenLabel={t('overridden')}
+        resetLabel={t('reset')}
+        invalidLabel={t('invalidNumber')}
+        numeric
+        disabled={disabled}
+        {...state.timeoutMs}
+        onEdit={(text) => { props.edit('timeoutMs', text) }}
+        onReset={() => { props.resetField('timeoutMs') }}
+      />
+      <ValueField
+        id="plugin-config-bash-output"
+        label={t('bashMaxOutputBytes')}
+        hint={t('bashMaxOutputBytesHint')}
+        overriddenLabel={t('overridden')}
+        resetLabel={t('reset')}
+        invalidLabel={t('invalidNumber')}
+        numeric
+        disabled={disabled}
+        {...state.maxOutputBytes}
+        onEdit={(text) => { props.edit('maxOutputBytes', text) }}
+        onReset={() => { props.resetField('maxOutputBytes') }}
+      />
+    </PluginCard>
+  )
+}
--- a/packages/client/ui-plugin-config/src/client/PluginCard.module.css
+++ b/packages/client/ui-plugin-config/src/client/PluginCard.module.css
@@ -0,0 +1,157 @@
+/* Plugin card: a header that names the plugin, disclosing its controls in place. */
+
+.card {
+  list-style: none;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 12px;
+  background: var(--dsw-alias-bg-layer-3);
+  transition: border-color .16s, background .16s;
+}
+
+.card:hover {
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+/* An open card reads as the one being worked on, not merely taller. */
+.cardOpen {
+  background: var(--dsw-alias-bg-layer-2);
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+.header {
+  width: 100%;
+  appearance: none;
+  border: 0;
+  background: none;
+  font: inherit;
+  color: inherit;
+  text-align: left;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px 16px;
+  border-radius: 12px;
+}
+
+.header:focus-visible {
+  outline: 2px solid var(--dsw-alias-brand-primary);
+  outline-offset: -2px;
+}
+
+/* Name over description: the description is what tells two plugins apart, so
+   it gets its own line rather than trailing the name. */
+.headText {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.name {
+  font-size: 15px;
+  font-weight: 600;
+  line-height: 1.4;
+  color: var(--dsw-alias-label-primary);
+}
+
+.description {
+  font-size: 13px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.chevron {
+  flex: none;
+  color: var(--dsw-alias-label-tertiary);
+  transition: transform .16s;
+}
+
+.chevronOpen {
+  transform: rotate(180deg);
+}
+
+.body {
+  border-top: 1px solid var(--dsw-alias-border-l2);
+  margin: 0 16px;
+  padding-bottom: 8px;
+}
+
+.readOnly {
+  margin: 12px 0 0;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+/* Carried on the header so a collapsed card still says it holds edits. */
+.pending {
+  flex: none;
+  border-radius: 999px;
+  padding: 1px 8px;
+  font-size: 11px;
+  line-height: 17px;
+  font-weight: 500;
+  white-space: nowrap;
+  background: var(--dsw-alias-bg-module-platform);
+  color: var(--dsw-alias-label-secondary);
+}
+
+.footer {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 8px;
+  padding: 12px 0 4px;
+  border-top: 1px solid var(--dsw-alias-border-l2);
+}
+
+.failed {
+  flex: 1;
+  min-width: 0;
+  margin: 0;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-error);
+}
+
+.discard,
+.save {
+  appearance: none;
+  border: 1px solid transparent;
+  border-radius: 8px;
+  padding: 5px 14px;
+  font: inherit;
+  font-size: 13px;
+  line-height: 1.5;
+  cursor: pointer;
+}
+
+.discard {
+  border-color: var(--dsw-alias-border-l2);
+  background: none;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.discard:hover:not(:disabled) {
+  color: var(--dsw-alias-label-primary);
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+.save {
+  background: var(--dsw-alias-label-primary);
+  color: var(--dsw-alias-bg-layer-3);
+}
+
+.discard:disabled,
+.save:disabled {
+  opacity: 0.4;
+  cursor: default;
+}
+
+.discard:focus-visible,
+.save:focus-visible {
+  outline: 2px solid var(--dsw-alias-brand-primary);
+  outline-offset: 1px;
+}
--- a/packages/client/ui-plugin-config/src/client/PluginCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/PluginCard.tsx
@@ -0,0 +1,98 @@
+/**
+ * One plugin's card: a header naming the plugin and what its settings govern,
+ * disclosing that plugin's controls in place, with the save that writes them.
+ *
+ * The header is its own button rather than a shared disclosure row because a
+ * card stacks its name over its description, while that row lays the two side
+ * by side — the layout, not the behavior, is what differs. Disclosure is
+ * card-local state: which card a user has open is a reading gesture, not
+ * something the Host or the section has any stake in. Staged edits outlive
+ * collapsing, so the header marks a card holding unsaved edits.
+ *
+ * A card renders nothing while its namespace is unavailable: a deployment that
+ * does not compose the owning plugin should show no trace of it, rather than a
+ * disabled card the user cannot act on.
+ */
+
+import { useState, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { IconChevronDownOutline14 } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { CardShell } from './card-store.ts'
+import type { PluginConfigKey } from './locales.ts'
+import css from './PluginCard.module.css'
+
+/** Card chrome shared by every plugin section. */
+export interface PluginCardProps {
+  /** Locale reader for this section's copy. */
+  t: (key: PluginConfigKey) => string
+  /** Locale key of the plugin's name. */
+  titleKey: PluginConfigKey
+  /** Locale key of the line describing what this plugin's settings govern. */
+  descriptionKey: PluginConfigKey
+  /** The card's form state: availability, writability, and what a save would do. */
+  state: CardShell
+  /** Write every staged edit. */
+  onSave: () => void
+  /** Drop every staged edit. */
+  onDiscard: () => void
+  /** The plugin's controls. */
+  children: ReactNode
+}
+
+/**
+ * Render one plugin card.
+ * @param props - the plugin's copy keys, its form state, and its controls.
+ * @returns the card, or nothing when the namespace is unavailable.
+ */
+export function PluginCard(props: PluginCardProps) {
+  const [open, setOpen] = useState(false)
+  const { state } = props
+  if (!state.available) return null
+  const title = props.t(props.titleKey)
+  const blocked = !state.dirty || state.invalid || state.saving
+  return (
+    <li className={clsx(css.card, open && css.cardOpen)}>
+      <button
+        type="button"
+        className={css.header}
+        aria-expanded={open}
+        aria-label={`${props.t(open ? 'collapse' : 'expand')}: ${title}`}
+        onClick={() => { setOpen(!open) }}
+      >
+        <span className={css.headText}>
+          <span className={css.name}>{title}</span>
+          <span className={css.description}>{props.t(props.descriptionKey)}</span>
+        </span>
+        {state.dirty ? <span className={css.pending}>{props.t('unsaved')}</span> : null}
+        <IconChevronDownOutline14 className={clsx(css.chevron, open && css.chevronOpen)} />
+      </button>
+      {open
+        ? (
+          <div className={css.body}>
+            {!state.writable ? <p className={css.readOnly} role="status">{props.t('readOnly')}</p> : null}
+            {props.children}
+            <div className={css.footer}>
+              {state.failed ? <p className={css.failed} role="status">{props.t('saveFailed')}</p> : null}
+              <button
+                type="button"
+                className={css.discard}
+                disabled={!state.dirty || state.saving}
+                onClick={props.onDiscard}
+              >
+                {props.t('discard')}
+              </button>
+              <button
+                type="button"
+                className={css.save}
+                disabled={blocked}
+                onClick={props.onSave}
+              >
+                {props.t(state.saving ? 'saving' : 'save')}
+              </button>
+            </div>
+          </div>
+        )
+        : null}
+    </li>
+  )
+}
--- a/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css
+++ b/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css
@@ -0,0 +1,36 @@
+/* Plugin configuration section: heading, intro, and the card list. */
+
+.section {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  max-width: 720px;
+  color: var(--dsw-alias-label-primary);
+}
+
+.heading {
+  margin: 0;
+  font-size: 18px;
+  font-weight: 600;
+}
+
+.intro {
+  margin: 0;
+  font-size: 13px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.cards {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.empty {
+  margin: 0;
+  font-size: 13px;
+  color: var(--dsw-alias-label-tertiary);
+}
--- a/packages/client/ui-plugin-config/src/client/PluginConfigSection.tsx
+++ b/packages/client/ui-plugin-config/src/client/PluginConfigSection.tsx
@@ -0,0 +1,49 @@
+/**
+ * Plugin configuration section: the shell around the per-plugin cards. It
+ * enumerates nothing itself — cards arrive through the `settings.plugin.item`
+ * slot it declares, so a plugin that ships a browser half owns its own card
+ * and this section never learns what a namespace means.
+ */
+
+import type { InjectFace, PropsLocale, PropsRenderSlots, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import type {} from './slot-contract.ts'
+import type { PluginConfigKey } from './locales.ts'
+import css from './PluginConfigSection.module.css'
+
+/** Registration-side business face for the section. */
+export interface PluginConfigSectionInjected {
+  /** How many cards the slot ledger currently holds; zero renders the empty line. */
+  cardCount: number
+}
+
+/** Props the renderer binds for the section. */
+export type PluginConfigSectionProps =
+  PropsRuntime<'settings.section'>
+  & PropsLocale<'settings.pluginConfig'>
+  & PropsRenderSlots<'settings.plugin.item'>
+  & InjectFace<PluginConfigSectionInjected>
+
+/**
+ * Render the plugin configuration section.
+ * @param props - runtime slot rendering, locale copy, and the card count.
+ * @returns the section.
+ */
+export function PluginConfigSection(props: PluginConfigSectionProps) {
+  const { t, renderSlot, cardCount } = props
+  return (
+    <div className={css.section}>
+      <h2 className={css.heading}>{t('title')}</h2>
+      <p className={css.intro}>{t('intro')}</p>
+      {cardCount === 0
+        ? <p className={css.empty}>{t('empty')}</p>
+        : <ul className={css.cards}>{renderSlot('settings.plugin.item', {})}</ul>}
+    </div>
+  )
+}
+
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface LocaleNamespaceMap {
+    /** Plugin configuration section and card copy. */
+    'settings.pluginConfig': PluginConfigKey
+  }
+}
--- a/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx
@@ -0,0 +1,78 @@
+/**
+ * The web-search provider's card: its endpoint, its per-request search budget,
+ * and the key — which is written through the credentials domain, never into
+ * the settings section, so the literal never rides a response.
+ */
+
+import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import { SecretField, ValueField } from './fields.tsx'
+import { PluginCard } from './PluginCard.tsx'
+import type { WebSearchCardFace } from './web-search-store.ts'
+import type {} from './slot-contract.ts'
+
+/** Props the renderer binds for the web-search card. */
+export type WebSearchCardProps =
+  PropsRuntime<'settings.plugin.item'>
+  & PropsLocale<'settings.pluginConfig'>
+  & InjectFace<WebSearchCardFace>
+
+/**
+ * Render the web-search card.
+ * @param props - locale copy, the card snapshot, and its form actions.
+ * @returns the card.
+ */
+export function WebSearchCard(props: WebSearchCardProps) {
+  const { t } = props
+  const state = props.useWebSearchCard(snapshot => snapshot)
+  const disabled = !state.writable
+  return (
+    <PluginCard
+      t={t}
+      titleKey="webSearchTitle"
+      descriptionKey="webSearchDescription"
+      state={state}
+      onSave={props.save}
+      onDiscard={props.discard}
+    >
+      <SecretField
+        id="plugin-config-web-search-key"
+        label={t('webSearchApiKey')}
+        hint={t('webSearchApiKeyHint')}
+        // The credentials domain accepts a key even when the settings document
+        // itself is read-only; they are separate stores with separate refusals.
+        // Its own writability is what disables this control — a key sourced
+        // from the process environment cannot be written from here.
+        disabled={!state.apiKeyWritable}
+        text={state.apiKey.text}
+        configured={state.apiKeyConfigured}
+        stateLabel={state.apiKeyConfigured ? t('webSearchApiKeySet') : t('webSearchApiKeyUnset')}
+        onEdit={(text) => { props.edit('apiKey', text) }}
+      />
+      <ValueField
+        id="plugin-config-web-search-endpoint"
+        label={t('webSearchBaseUrl')}
+        hint={t('webSearchBaseUrlHint')}
+        overriddenLabel={t('overridden')}
+        resetLabel={t('reset')}
+        invalidLabel={t('invalidNumber')}
+        disabled={disabled}
+        {...state.baseURL}
+        onEdit={(text) => { props.edit('baseURL', text) }}
+        onReset={() => { props.resetField('baseURL') }}
+      />
+      <ValueField
+        id="plugin-config-web-search-max-uses"
+        label={t('webSearchMaxUses')}
+        hint={t('webSearchMaxUsesHint')}
+        overriddenLabel={t('overridden')}
+        resetLabel={t('reset')}
+        invalidLabel={t('invalidNumber')}
+        numeric
+        disabled={disabled}
+        {...state.maxUses}
+        onEdit={(text) => { props.edit('maxUses', text) }}
+        onReset={() => { props.resetField('maxUses') }}
+      />
+    </PluginCard>
+  )
+}
--- a/packages/client/ui-plugin-config/src/client/agent-loop-store.ts
+++ b/packages/client/ui-plugin-config/src/client/agent-loop-store.ts
@@ -0,0 +1,57 @@
+/** The agent-loop card's staged form over the `agent-loop` settings namespace. */
+
+import type { SettingsScope, SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { CardForm, numberField, type CardActions, type CardFieldState, type CardShell } from './card-store.ts'
+
+/**
+ * Namespace of the agent loop's user-owned settings. Spelled here rather than
+ * imported: a client package must not depend on a Host package.
+ */
+export const AGENT_LOOP_NS = 'agent-loop'
+
+/**
+ * The agent-loop fields this card edits. The Host section carries only this
+ * field — the composed `agents` array is deliberately not part of it.
+ */
+export interface AgentLoopSettings {
+  /** Upper bound on parallel-safe tool calls in flight per step. */
+  maxParallelToolCalls?: number
+}
+
+/** What the agent-loop card renders. */
+export interface AgentLoopCardState extends CardShell {
+  /** Parallel tool-call cap. */
+  maxParallelToolCalls: CardFieldState
+}
+
+/** The registration-side face the agent-loop card's slot entry injects. */
+export interface AgentLoopCardFace extends CardActions {
+  hooks: {
+    /** Card snapshot bound by the renderer as useAgentLoopCard. */
+    agentLoopCard: SnapshotStore<AgentLoopCardState>
+  }
+}
+
+/** Bridges the `agent-loop` scope onto the card's staged form. */
+export class AgentLoopCardController {
+  private readonly form: CardForm<AgentLoopSettings>
+  private readonly store: SnapshotStore<AgentLoopCardState>
+
+  /** @param scope - the bound settings scope for the `agent-loop` namespace. */
+  constructor(scope: SettingsScope<AgentLoopSettings>) {
+    this.form = new CardForm(scope, [numberField('maxParallelToolCalls')])
+    this.store = this.form.bind(() => this.projection())
+  }
+
+  private projection(): AgentLoopCardState {
+    return { ...this.form.shell(), maxParallelToolCalls: this.form.field('maxParallelToolCalls') }
+  }
+
+  /**
+   * Build the face the card's slot registration injects.
+   * @returns the card's snapshot and its form actions.
+   */
+  inject(): AgentLoopCardFace {
+    return { hooks: { agentLoopCard: this.store }, ...this.form.actions() }
+  }
+}
--- a/packages/client/ui-plugin-config/src/client/bash-store.ts
+++ b/packages/client/ui-plugin-config/src/client/bash-store.ts
@@ -0,0 +1,63 @@
+/** The shell card's staged form over the `bash` settings namespace. */
+
+import type { SettingsScope, SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { CardForm, numberField, type CardActions, type CardFieldState, type CardShell } from './card-store.ts'
+
+/**
+ * Namespace of the shell capability. Spelled here rather than imported: a
+ * client package must not depend on a Host package, and the executor families
+ * that own it spell the same value.
+ */
+export const BASH_NS = 'bash'
+
+/** The shell fields this card edits — a subset of the served schema by design. */
+export interface BashSettings {
+  /** Foreground command timeout in milliseconds. */
+  timeoutMs?: number
+  /** Per-stream in-memory output cap in bytes. */
+  maxOutputBytes?: number
+}
+
+/** What the shell card renders. */
+export interface BashCardState extends CardShell {
+  /** Command timeout in milliseconds. */
+  timeoutMs: CardFieldState
+  /** Per-stream output cap in bytes. */
+  maxOutputBytes: CardFieldState
+}
+
+/** The registration-side face the shell card's slot entry injects. */
+export interface BashCardFace extends CardActions {
+  hooks: {
+    /** Card snapshot bound by the renderer as useBashCard. */
+    bashCard: SnapshotStore<BashCardState>
+  }
+}
+
+/** Bridges the `bash` scope onto the shell card's staged form. */
+export class BashCardController {
+  private readonly form: CardForm<BashSettings>
+  private readonly store: SnapshotStore<BashCardState>
+
+  /** @param scope - the bound settings scope for the `bash` namespace. */
+  constructor(scope: SettingsScope<BashSettings>) {
+    this.form = new CardForm(scope, [numberField('timeoutMs'), numberField('maxOutputBytes')])
+    this.store = this.form.bind(() => this.projection())
+  }
+
+  private projection(): BashCardState {
+    return {
+      ...this.form.shell(),
+      timeoutMs: this.form.field('timeoutMs'),
+      maxOutputBytes: this.form.field('maxOutputBytes'),
+    }
+  }
+
+  /**
+   * Build the face the card's slot registration injects.
+   * @returns the card's snapshot and its form actions.
+   */
+  inject(): BashCardFace {
+    return { hooks: { bashCard: this.store }, ...this.form.actions() }
+  }
+}
--- a/packages/client/ui-plugin-config/src/client/card-store.ts
+++ b/packages/client/ui-plugin-config/src/client/card-store.ts
@@ -0,0 +1,351 @@
+/**
+ * Shared form model behind every plugin card.
+ *
+ * A card stages what the user types and writes it only when they save. Each
+ * settings write is a durable, revision-fenced document mutation, so a control
+ * that committed as it settled turned one edit into a write the user never
+ * asked for and could not preview; staged text makes what is on screen exactly
+ * what a save would store.
+ *
+ * A field shows its effective value — the user layer over the composition
+ * layer over the schema default — and whether the user layer carries it. That
+ * presence, not a value comparison, is what marks a field overridden: an
+ * override equal to the composition default is still an override.
+ */
+
+import type { SettingsScope, SettingsScopeSnapshot } from '@deepseek-ai/dsh-client-runtime/client'
+import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+
+/** The write one field's staged text performs when the card is saved. */
+export type FieldWrite =
+  | { kind: 'set'; value: unknown }
+  | { kind: 'clear' }
+
+/** How one section field converts between its stored value and its draft text. */
+export interface CardFieldSpec {
+  /** Field name inside the namespace section. */
+  field: string
+  /** Render a stored value as draft text; the empty string when the section carries none. */
+  format: (value: unknown) => string
+  /**
+   * The write this draft text stages, or undefined when the text is not a
+   * value this field accepts — which blocks the save rather than discarding it.
+   */
+  parse: (text: string) => FieldWrite | undefined
+}
+
+/**
+ * A control whose value is written outside the settings section. A credential
+ * literal never rides a response, so its draft has nothing to seed from: it is
+ * blank until typed, and a blank draft writes nothing.
+ */
+export interface CardSecretSpec {
+  /** Field name addressing this control inside the card's form. */
+  field: string
+  /** Write the staged text; resolves to whether the Host accepted it. */
+  write: (text: string) => Promise<boolean>
+}
+
+/** One field as a card's control renders it. */
+export interface CardFieldState {
+  /** Draft text the control renders. */
+  text: string
+  /**
+   * Whether saving would leave a user-layer entry for this field. A staged
+   * edit answers for itself, so the badge previews the save rather than
+   * reporting a state the pending edit already contradicts.
+   */
+  overridden: boolean
+  /** Whether the draft is not a value this field accepts, which blocks saving. */
+  invalid: boolean
+}
+
+/** Form state every plugin card shares. */
+export interface CardShell {
+  /** False while the namespace is not served to this client; the card renders nothing. */
+  available: boolean
+  /** Whether the Host document accepts writes. */
+  writable: boolean
+  /** Whether the form holds edits that a save would write. */
+  dirty: boolean
+  /** Whether any staged draft is invalid, which blocks the save. */
+  invalid: boolean
+  /** Whether a save is crossing the wire. */
+  saving: boolean
+  /** Whether the last save did not land as staged; cleared by the next edit or save. */
+  failed: boolean
+}
+
+/** The write actions every plugin card's slot entry injects. */
+export interface CardActions {
+  /** Stage draft text for one field. */
+  edit: (field: string, text: string) => void
+  /** Stage a clear, so saving lets the field re-inherit the composition layer. */
+  resetField: (field: string) => void
+  /** Write every staged edit, then re-seed from what the Host accepted. */
+  save: () => void
+  /** Drop every staged edit. */
+  discard: () => void
+}
+
+/** One field's staged edit. */
+interface StagedEdit {
+  /** Draft text the control renders. */
+  text: string
+  /** True when this edit clears the field whatever text it shows. */
+  clear: boolean
+}
+
+/** One staged edit resolved into the write a save performs. */
+interface PlannedWrite {
+  /** Field this entry writes. */
+  field: string
+  /**
+   * Perform the write and report whether the Host holds the staged value
+   * afterwards; undefined when the draft is not a value the field accepts.
+   */
+  run: (() => Promise<boolean>) | undefined
+}
+
+/**
+ * A whole-number field. An empty draft clears the field; any other draft that
+ * is not a finite number blocks the save.
+ * @param field - field name inside the namespace section.
+ * @returns the field's conversion spec.
+ */
+export function numberField(field: string): CardFieldSpec {
+  return {
+    field,
+    // A section that carries no number for this field renders empty rather
+    // than as a value nobody chose.
+    format: value => typeof value === 'number' ? String(value) : '',
+    parse: (text) => {
+      const trimmed = text.trim()
+      if (trimmed === '') return { kind: 'clear' }
+      const parsed = Number(trimmed)
+      return Number.isFinite(parsed) ? { kind: 'set', value: parsed } : undefined
+    },
+  }
+}
+
+/**
+ * A free-text field. An empty draft clears the field, so emptying the control
+ * and saving is the same gesture as resetting it.
+ * @param field - field name inside the namespace section.
+ * @returns the field's conversion spec.
+ */
+export function textField(field: string): CardFieldSpec {
+  return {
+    field,
+    format: value => typeof value === 'string' ? value : '',
+    parse: (text) => {
+      const trimmed = text.trim()
+      return trimmed === '' ? { kind: 'clear' } : { kind: 'set', value: trimmed }
+    },
+  }
+}
+
+/**
+ * Stages one card's edits over one settings namespace and writes them on save.
+ *
+ * The form publishes through a snapshot store because slot components read
+ * through a snapshot selector, while both the scope and the local drafts
+ * change underneath; every projection is rebuilt from the two together.
+ */
+export class CardForm<T> {
+  private readonly specs: Map<string, CardFieldSpec>
+  private readonly secretSpecs: Map<string, CardSecretSpec>
+  private readonly staged = new Map<string, StagedEdit>()
+  private readonly listeners = new Set<() => void>()
+  private saving = false
+  private failed = false
+
+  /**
+   * @param scope - the bound settings scope for this card's namespace.
+   * @param specs - the section fields this card edits.
+   * @param secrets - the card's write-only controls, written outside the section.
+   */
+  constructor(
+    private readonly scope: SettingsScope<T>,
+    specs: CardFieldSpec[],
+    secrets: CardSecretSpec[] = [],
+  ) {
+    this.specs = new Map(specs.map(spec => [spec.field, spec]))
+    this.secretSpecs = new Map(secrets.map(spec => [spec.field, spec]))
+    scope.subscribe(() => { this.publish() })
+  }
+
+  /**
+   * Publish a projection of this form, rebuilt whenever the scope or a draft changes.
+   * @param project - build the card's state from the form's current reads.
+   * @returns the store the card's component reads through its bound selector.
+   */
+  bind<S>(project: () => S): SnapshotStore<S> {
+    const store = createSnapshotStore(project())
+    this.listeners.add(() => { store.set(project()) })
+    return store
+  }
+
+  /**
+   * Read the card-level state: what the Host serves, and what a save would do.
+   * @returns the form state every card shares.
+   */
+  shell(): CardShell {
+    const snapshot = this.scope.getSnapshot()
+    const plan = this.plan()
+    return {
+      available: snapshot.status === 'ready',
+      writable: snapshot.writable,
+      dirty: plan.length > 0,
+      invalid: plan.some(item => item.run === undefined),
+      saving: this.saving,
+      failed: this.failed,
+    }
+  }
+
+  /**
+   * Read one control's state.
+   * @param field - field name of a section field or of a write-only control.
+   * @returns the draft text, whether a save would leave an override, and whether it is invalid.
+   */
+  field(field: string): CardFieldState {
+    const staged = this.staged.get(field)
+    if (this.secretSpecs.has(field)) {
+      return { text: staged?.text ?? '', overridden: false, invalid: false }
+    }
+    const spec = this.spec(field)
+    if (staged === undefined) {
+      return { text: spec.format(this.sectionValue(field)), overridden: this.stored(field), invalid: false }
+    }
+    const write = staged.clear ? { kind: 'clear' as const } : spec.parse(staged.text)
+    return {
+      text: staged.text,
+      overridden: write?.kind === 'set',
+      invalid: write === undefined,
+    }
+  }
+
+  /**
+   * Build the edit, reset, save, and discard actions bound to this form.
+   * @returns the actions a card's slot entry injects.
+   */
+  actions(): CardActions {
+    return {
+      edit: (field, text) => { this.stage(field, { text, clear: false }) },
+      resetField: (field) => {
+        this.stage(field, { text: this.spec(field).format(this.baseValue(field)), clear: true })
+      },
+      save: () => { void this.save() },
+      discard: () => {
+        if (this.staged.size === 0 && !this.failed) return
+        this.staged.clear()
+        this.failed = false
+        this.publish()
+      },
+    }
+  }
+
+  /**
+   * Write every staged edit, then re-seed from what the Host accepted.
+   *
+   * The Host is the only authority on whether a value was accepted — its
+   * validators own the constraints no schema can express — so the outcome is
+   * read back from the section rather than predicted here. A save that did not
+   * land keeps its drafts, so the user can correct them instead of retyping.
+   * @returns settlement after every write and the read-back.
+   */
+  async save(): Promise<void> {
+    const plan = this.plan()
+    const writes = plan.flatMap(item => item.run === undefined ? [] : [item.run])
+    if (plan.length === 0 || this.saving || writes.length !== plan.length) return
+    this.saving = true
+    this.failed = false
+    this.publish()
+    let landed = true
+    for (const write of writes) {
+      landed = await write() && landed
+    }
+    if (landed) this.staged.clear()
+    this.saving = false
+    this.failed = !landed
+    this.publish()
+  }
+
+  /**
+   * Every staged edit a save would write. An entry whose draft is not a value
+   * its field accepts carries no write: the form is still dirty, and the save
+   * refuses rather than dropping the edit.
+   * @returns the planned writes, in the order the fields were staged.
+   */
+  private plan(): PlannedWrite[] {
+    const plan: PlannedWrite[] = []
+    for (const [field, staged] of this.staged) {
+      const secret = this.secretSpecs.get(field)
+      if (secret !== undefined) {
+        const value = staged.text.trim()
+        if (value !== '') plan.push({ field, run: () => secret.write(value) })
+        continue
+      }
+      const spec = this.spec(field)
+      if (staged.clear) {
+        if (this.stored(field)) plan.push({ field, run: () => this.clear(field) })
+        continue
+      }
+      if (staged.text === spec.format(this.sectionValue(field))) continue
+      const write = spec.parse(staged.text)
+      if (write === undefined) plan.push({ field, run: undefined })
+      else if (write.kind === 'clear') plan.push({ field, run: () => this.clear(field) })
+      else plan.push({ field, run: () => this.store(field, write.value) })
+    }
+    return plan
+  }
+
+  private async clear(field: string): Promise<boolean> {
+    await this.scope.unset(field)
+    return !this.stored(field)
+  }
+
+  private async store(field: string, value: unknown): Promise<boolean> {
+    await this.scope.set(field, value)
+    return this.userLayer()?.[field] === value
+  }
+
+  private stage(field: string, edit: StagedEdit): void {
+    this.staged.set(field, edit)
+    this.failed = false
+    this.publish()
+  }
+
+  private spec(field: string): CardFieldSpec {
+    const spec = this.specs.get(field)
+    // Every call site names a field this card declared; a missing one is a
+    // wiring mistake that must not degrade into a silently inert control.
+    if (spec === undefined) throw new Error(`plugin card has no field ${field}`)
+    return spec
+  }
+
+  private snapshotOf(): SettingsScopeSnapshot<T> {
+    return this.scope.getSnapshot()
+  }
+
+  private sectionValue(field: string): unknown {
+    return (this.snapshotOf().value as Record<string, unknown> | undefined)?.[field]
+  }
+
+  private baseValue(field: string): unknown {
+    return (this.snapshotOf().base as Record<string, unknown> | undefined)?.[field]
+  }
+
+  private userLayer(): Record<string, unknown> | undefined {
+    return this.snapshotOf().user as Record<string, unknown> | undefined
+  }
+
+  private stored(field: string): boolean {
+    const user = this.userLayer()
+    return user !== undefined && Object.hasOwn(user, field)
+  }
+
+  private publish(): void {
+    for (const listener of this.listeners) listener()
+  }
+}
--- a/packages/client/ui-plugin-config/src/client/fields.module.css
+++ b/packages/client/ui-plugin-config/src/client/fields.module.css
@@ -0,0 +1,113 @@
+/* Plugin configuration fields: label, control, override badge, and hint. */
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  padding: 12px 0;
+}
+
+.field + .field {
+  border-top: 1px solid var(--dsw-alias-border-l2);
+}
+
+.head {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.label {
+  flex: 1;
+  min-width: 0;
+  font-size: 13px;
+  font-weight: 500;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-primary);
+}
+
+.badges {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.badge {
+  border-radius: 999px;
+  padding: 1px 8px;
+  font-size: 11px;
+  line-height: 17px;
+  white-space: nowrap;
+  font-weight: 500;
+  background: var(--dsw-alias-bg-module-platform);
+  color: var(--dsw-alias-label-secondary);
+}
+
+.badgeMuted {
+  border-radius: 999px;
+  padding: 1px 8px;
+  font-size: 11px;
+  line-height: 17px;
+  white-space: nowrap;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.reset {
+  border: none;
+  background: none;
+  padding: 0;
+  font: inherit;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+}
+
+.reset:hover:not(:disabled) {
+  color: var(--dsw-alias-label-primary);
+}
+
+.reset:disabled {
+  cursor: default;
+}
+
+.input {
+  height: 34px;
+  padding: 0 12px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  background: var(--dsw-alias-bg-layer-3);
+  font: inherit;
+  font-size: 13px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-primary);
+}
+
+.input:focus-visible {
+  outline: none;
+  border-color: var(--dsw-alias-brand-primary);
+}
+
+.input:disabled {
+  color: var(--dsw-alias-label-tertiary);
+  cursor: default;
+}
+
+.inputInvalid {
+  composes: input;
+  border-color: var(--dsw-alias-label-error);
+}
+
+.invalid {
+  margin: 0;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-error);
+}
+
+.hint {
+  margin: 0;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--dsw-alias-label-tertiary);
+}
--- a/packages/client/ui-plugin-config/src/client/fields.tsx
+++ b/packages/client/ui-plugin-config/src/client/fields.tsx
@@ -0,0 +1,123 @@
+/**
+ * Hand-written controls for the plugin configuration forms. Each renders one
+ * field's label, its staged text, whether saving would leave an override, and
+ * — when one stands — the reset that stages a clear back to the composition
+ * layer. Nothing here writes: a control reports what the user typed, and the
+ * card's save is the single point where a draft becomes a document mutation.
+ */
+
+import css from './fields.module.css'
+
+/** What every field control needs regardless of its value type. */
+export interface FieldProps {
+  /** Stable id associating the label with its control. */
+  id: string
+  /** Visible label. */
+  label: string
+  /** One-line explanation rendered under the control. */
+  hint: string
+  /** Draft text this control renders. */
+  text: string
+  /** True when saving would leave a user-layer entry for this field. */
+  overridden: boolean
+  /** True when the draft is not a value this field accepts. */
+  invalid: boolean
+  /** Copy for the overridden badge. */
+  overriddenLabel: string
+  /** Copy for the reset control. */
+  resetLabel: string
+  /** Copy shown in place of the hint while the draft is invalid. */
+  invalidLabel: string
+  /** Disables every control (read-only document, or an unavailable namespace). */
+  disabled: boolean
+  /** Stage draft text. */
+  onEdit: (text: string) => void
+  /** Stage a clear so the field re-inherits the composition layer. */
+  onReset: () => void
+}
+
+/**
+ * A staged value field. `numeric` only hints the keypad: which drafts a field
+ * accepts is decided by its spec, so the control never silently rewrites what
+ * the user typed.
+ * @param props - the field's copy, its staged text, and the edit actions.
+ * @returns the labelled control.
+ */
+export function ValueField(props: FieldProps & {
+  /** Hints a numeric keypad without narrowing what the control accepts. */
+  numeric?: boolean
+  /** Placeholder shown while the draft is empty. */
+  placeholder?: string
+}) {
+  return (
+    <div className={css.field}>
+      <div className={css.head}>
+        <label className={css.label} htmlFor={props.id}>{props.label}</label>
+        {props.overridden
+          ? (
+            <span className={css.badges}>
+              <span className={css.badge}>{props.overriddenLabel}</span>
+              <button
+                type="button"
+                className={css.reset}
+                disabled={props.disabled}
+                onClick={props.onReset}
+              >
+                {props.resetLabel}
+              </button>
+            </span>
+          )
+          : null}
+      </div>
+      <input
+        id={props.id}
+        className={props.invalid ? css.inputInvalid : css.input}
+        type="text"
+        {...props.numeric === true ? { inputMode: 'numeric' as const } : {}}
+        {...props.invalid ? { 'aria-invalid': true } : {}}
+        value={props.text}
+        placeholder={props.placeholder ?? ''}
+        disabled={props.disabled}
+        onChange={(event) => { props.onEdit(event.target.value) }}
+      />
+      <p className={props.invalid ? css.invalid : css.hint}>
+        {props.invalid ? props.invalidLabel : props.hint}
+      </p>
+    </div>
+  )
+}
+
+/**
+ * A write-only credential control. The value never rides a response, so the
+ * control reports only whether one is configured and starts blank; a blank
+ * draft writes nothing, which keeps the stored key rather than clearing it.
+ * @param props - the field's copy, its staged text, and the configured state.
+ * @returns the labelled control.
+ */
+export function SecretField(props: Pick<FieldProps, 'id' | 'label' | 'hint' | 'text' | 'disabled' | 'onEdit'> & {
+  /** Whether the Host reports a configured credential for this reference. */
+  configured: boolean
+  /** Copy describing the configured state. */
+  stateLabel: string
+}) {
+  return (
+    <div className={css.field}>
+      <div className={css.head}>
+        <label className={css.label} htmlFor={props.id}>{props.label}</label>
+        <span className={css.badges}>
+          <span className={props.configured ? css.badge : css.badgeMuted}>{props.stateLabel}</span>
+        </span>
+      </div>
+      <input
+        id={props.id}
+        className={css.input}
+        type="password"
+        autoComplete="off"
+        value={props.text}
+        disabled={props.disabled}
+        onChange={(event) => { props.onEdit(event.target.value) }}
+      />
+      <p className={css.hint}>{props.hint}</p>
+    </div>
+  )
+}
--- a/packages/client/ui-plugin-config/src/client/index.ts
+++ b/packages/client/ui-plugin-config/src/client/index.ts
@@ -0,0 +1,110 @@
+/**
+ * Plugin configuration surface, browser half — one settings section holding
+ * an expandable card per Host plugin whose configuration a user owns.
+ *
+ * The section owns no knowledge of any namespace: it declares the
+ * `settings.plugin.item` slot and renders whatever cards were registered into
+ * it, so a plugin that ships a browser half contributes its own card and its
+ * own controls. The three cards this package registers are the host-plane
+ * sections the deployment already exposes; each binds its namespace through
+ * the client settings scope, which keeps them unaware of one another.
+ */
+
+import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
+// Type-only: pulls the locale plugin's Context merge (ctx.locale).
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+// Type-only: the settings shell's SlotMap merge (the 'settings.section' entry)
+// and the ctx.settingsScope Context merge. Cross-plugin collaboration goes
+// through the service, never a value import (client bundle purity gate).
+import type {} from '@deepseek-ai/dsh-client-ui-settings/client'
+import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
+// Type-only: the ctx.remote Context merge and the forwarded-event key face.
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
+import { AgentLoopCard } from './AgentLoopCard.tsx'
+import { BashCard } from './BashCard.tsx'
+import { PluginConfigSection } from './PluginConfigSection.tsx'
+import { WebSearchCard } from './WebSearchCard.tsx'
+import { AGENT_LOOP_NS, AgentLoopCardController } from './agent-loop-store.ts'
+import { BASH_NS, BashCardController } from './bash-store.ts'
+import { WEB_SEARCH_NS, WebSearchCardController } from './web-search-store.ts'
+import { en, zh } from './locales.ts'
+
+export type { PluginConfigSectionInjected, PluginConfigSectionProps } from './PluginConfigSection.tsx'
+export type { PluginCardProps } from './PluginCard.tsx'
+export type { SettingsPluginItemOwnerProps } from './slot-contract.ts'
+export type { FieldProps } from './fields.tsx'
+export type {
+  CardActions, CardFieldSpec, CardFieldState, CardSecretSpec, CardShell,
+} from './card-store.ts'
+export type { AgentLoopCardFace, AgentLoopCardState } from './agent-loop-store.ts'
+export type { BashCardFace, BashCardState } from './bash-store.ts'
+export type { WebSearchCardFace, WebSearchCardState } from './web-search-store.ts'
+
+/** Dictionary namespace owned by this plugin. */
+const NS = 'settings.pluginConfig'
+
+/** Required services (cordis fiber inject). */
+export const inject = ['slots', 'locale', 'connection', 'remote', 'settingsScope']
+
+/**
+ * Mount the plugin configuration section and the cards this package ships.
+ * @param ctx - the browser plugin context.
+ */
+export function apply(ctx: ClientContext): void {
+  const { api } = ctx.get('connection') as ConnectionHandle
+  const t = ctx.locale.bind(NS)
+  ctx.effect(() => ctx.locale.register(NS, { zh, en }), 'ui-plugin-config: section dictionaries')
+
+  const bash = new BashCardController(ctx.settingsScope.bind({ namespace: BASH_NS }))
+  const agentLoop = new AgentLoopCardController(ctx.settingsScope.bind({ namespace: AGENT_LOOP_NS }))
+  const webSearch = new WebSearchCardController(ctx.settingsScope.bind({ namespace: WEB_SEARCH_NS }), api)
+
+  // The credential a card reports is not part of any settings section, so its
+  // scope publishes nothing when one is written. This is the only signal that
+  // a key written on another surface reached the Host.
+  ctx.effect(
+    () => ctx.remote.$on('credentials/updated', (ref) => { webSearch.refreshCredential(ref) }),
+    'ui-plugin-config: credential invalidations',
+  )
+
+  // The section renders the empty line rather than an empty list when no plugin
+  // contributed a card. The count is read once: the renderer caches a root
+  // entry's inject face per registration, so this reports what was registered
+  // when the section mounted, not what is visible now. Both gaps are bounded by
+  // this deployment always registering the three cards below — a card that
+  // arrives later would not raise the count, and a namespace this deployment
+  // does not expose leaves its card rendering nothing inside a non-empty list.
+  ctx.slots.inject('settings.section', () => ctx.slots.register({
+    name: 'settings.section',
+    id: 'plugins',
+    order: 30,
+    label: () => t('nav'),
+    locale: NS,
+    inject: () => ({ cardCount: ctx.slots.entries('settings.plugin.item').length }),
+    children: { 'settings.plugin.item': { kind: 'list', scope: 'root' } },
+  }, PluginConfigSection))
+
+  ctx.slots.inject('settings.plugin.item', function* () {
+    yield ctx.slots.register({
+      name: 'settings.plugin.item',
+      id: 'bash',
+      order: 0,
+      locale: NS,
+      inject: () => bash.inject(),
+    }, BashCard)
+    yield ctx.slots.register({
+      name: 'settings.plugin.item',
+      id: 'agent-loop',
+      order: 10,
+      locale: NS,
+      inject: () => agentLoop.inject(),
+    }, AgentLoopCard)
+    yield ctx.slots.register({
+      name: 'settings.plugin.item',
+      id: 'web-search',
+      order: 20,
+      locale: NS,
+      inject: () => webSearch.inject(),
+    }, WebSearchCard)
+  })
+}
--- a/packages/client/ui-plugin-config/src/client/locales.ts
+++ b/packages/client/ui-plugin-config/src/client/locales.ts
@@ -0,0 +1,91 @@
+/** Locale bundles for the plugin configuration section and its plugin cards. */
+
+/** Locale keys these surfaces render. */
+export type PluginConfigKey =
+  | 'nav' | 'title' | 'intro' | 'empty'
+  | 'overridden' | 'reset' | 'readOnly' | 'expand' | 'collapse'
+  | 'save' | 'saving' | 'discard' | 'unsaved' | 'saveFailed' | 'invalidNumber'
+  | 'bashTitle' | 'bashDescription' | 'bashTimeoutMs' | 'bashTimeoutMsHint'
+  | 'bashMaxOutputBytes' | 'bashMaxOutputBytesHint'
+  | 'agentLoopTitle' | 'agentLoopDescription' | 'agentLoopMaxParallel' | 'agentLoopMaxParallelHint'
+  | 'webSearchTitle' | 'webSearchDescription'
+  | 'webSearchApiKey' | 'webSearchApiKeyHint' | 'webSearchApiKeySet' | 'webSearchApiKeyUnset'
+  | 'webSearchBaseUrl' | 'webSearchBaseUrlHint' | 'webSearchMaxUses' | 'webSearchMaxUsesHint'
+
+/** English copy. */
+export const en: Record<PluginConfigKey, string> = {
+  nav: 'Plugin config',
+  title: 'Plugin configuration',
+  intro: 'Configure the plugins this deployment installed.',
+  empty: 'This deployment exposes no plugin settings.',
+  overridden: 'Overridden',
+  reset: 'Reset to default',
+  readOnly: 'This deployment stores settings read-only.',
+  expand: 'Show settings',
+  collapse: 'Hide settings',
+  save: 'Save',
+  saving: 'Saving…',
+  discard: 'Discard',
+  unsaved: 'Unsaved',
+  saveFailed: 'The deployment did not accept these values; they were left for you to correct.',
+  invalidNumber: 'Enter a number, or leave blank to use the default.',
+  bashTitle: 'Shell',
+  bashDescription: 'Limits every command the agent runs.',
+  bashTimeoutMs: 'Command timeout (ms)',
+  bashTimeoutMsHint: 'How long one command may run before it is terminated.',
+  bashMaxOutputBytes: 'Output cap per stream (bytes)',
+  bashMaxOutputBytesHint: 'Output beyond this spills to a temporary file rather than being lost.',
+  agentLoopTitle: 'Agent loop',
+  agentLoopDescription: 'How the agent dispatches tool calls.',
+  agentLoopMaxParallel: 'Parallel tool calls',
+  agentLoopMaxParallelHint: 'Upper bound on parallel-safe calls running at once within one step.',
+  webSearchTitle: 'Web search',
+  webSearchDescription: 'The DeepSeek search provider.',
+  webSearchApiKey: 'API key',
+  webSearchApiKeyHint: 'Stored outside the settings file. Leave blank to keep the current key.',
+  webSearchApiKeySet: 'A key is configured.',
+  webSearchApiKeyUnset: 'No key is configured; search is unavailable until one is.',
+  webSearchBaseUrl: 'Endpoint',
+  webSearchBaseUrlHint: 'Leave blank to use the provider default.',
+  webSearchMaxUses: 'Max searches per request',
+  webSearchMaxUsesHint: 'How many times one request may search before it must answer.',
+}
+
+/** Simplified Chinese copy. */
+export const zh: Record<PluginConfigKey, string> = {
+  nav: '插件配置',
+  title: '插件配置',
+  intro: '配置本部署已安装的插件。',
+  empty: '本部署没有开放任何插件设置。',
+  overridden: '已覆盖',
+  reset: '恢复默认',
+  readOnly: '本部署的设置为只读。',
+  expand: '展开设置',
+  collapse: '收起设置',
+  save: '保存',
+  saving: '保存中…',
+  discard: '放弃修改',
+  unsaved: '未保存',
+  saveFailed: '本部署没有接受这些值，已保留供你修改。',
+  invalidNumber: '请填数字；留空表示使用默认值。',
+  bashTitle: '终端',
+  bashDescription: '限制 agent 运行的每一条命令。',
+  bashTimeoutMs: '命令超时（毫秒）',
+  bashTimeoutMsHint: '单条命令允许运行多久，超时即终止。',
+  bashMaxOutputBytes: '单流输出上限（字节）',
+  bashMaxOutputBytesHint: '超出部分会转存到临时文件，而不是被丢弃。',
+  agentLoopTitle: 'Agent 循环',
+  agentLoopDescription: 'Agent 如何派发工具调用。',
+  agentLoopMaxParallel: '并行工具调用数',
+  agentLoopMaxParallelHint: '同一步内最多同时运行多少个可并行的调用。',
+  webSearchTitle: '网页搜索',
+  webSearchDescription: 'DeepSeek 搜索提供方。',
+  webSearchApiKey: 'API Key',
+  webSearchApiKeyHint: '不写入设置文件。留空表示保持当前密钥。',
+  webSearchApiKeySet: '已配置密钥。',
+  webSearchApiKeyUnset: '未配置密钥；配置之前搜索不可用。',
+  webSearchBaseUrl: '接口地址',
+  webSearchBaseUrlHint: '留空则使用提供方默认地址。',
+  webSearchMaxUses: '单次请求最多搜索次数',
+  webSearchMaxUsesHint: '一次请求在必须作答前最多可以搜索多少次。',
+}
--- a/packages/client/ui-plugin-config/src/client/slot-contract.ts
+++ b/packages/client/ui-plugin-config/src/client/slot-contract.ts
@@ -0,0 +1,24 @@
+/**
+ * The `settings.plugin.item` slot type — one plugin's card inside the plugin
+ * configuration section. Options: `id` (card key), `order` (card position).
+ * A card draws its own internals; the section only stacks them and reports
+ * how many there are.
+ *
+ * TYPE HOME RATIONALE: unlike `settings.general.item`, whose registrants span
+ * packages that cannot reference its declarer, every current registrant of
+ * this slot ships in this package, and a plugin registering its own card
+ * already depends on this package for the card chrome. The type therefore
+ * lives with the section that declares it at runtime.
+ */
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface SlotMap {
+    /** One plugin's card inside the plugin configuration section (see module JSDoc). */
+    'settings.plugin.item': { kind: 'list'; scope: 'root'; owner: SettingsPluginItemOwnerProps }
+  }
+}
+
+/** Owner share of a plugin card (the section supplies nothing). */
+export interface SettingsPluginItemOwnerProps {
+  /** Marker field: card owner props are intentionally empty. */
+  children?: never
+}
--- a/packages/client/ui-plugin-config/src/client/web-search-store.ts
+++ b/packages/client/ui-plugin-config/src/client/web-search-store.ts
@@ -0,0 +1,192 @@
+/**
+ * The web-search card's staged form over the `web-search-deepseek` settings
+ * namespace.
+ *
+ * The key is the one control that does not live in the section: its literal
+ * never rides a response, so the card learns only whether one is configured
+ * and writes it through the credentials domain, addressed by the reference the
+ * section names. It is still staged with the rest of the form, so one save
+ * covers everything the card shows.
+ */
+
+import type { IApiClient } from '@deepseek-ai/dsh-client-connection/client'
+import type { SettingsScope, SettingsScopeSnapshot, SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import {
+  CardForm, numberField, textField,
+  type CardActions, type CardFieldState, type CardShell,
+} from './card-store.ts'
+
+/**
+ * Namespace of the DeepSeek search provider. Spelled here rather than
+ * imported: a client package must not depend on a Host package.
+ */
+export const WEB_SEARCH_NS = 'web-search-deepseek'
+
+/** Credential reference the provider resolves when the section names none. */
+const DEFAULT_API_KEY_REF = 'DEEPSEEK_API_KEY'
+
+/** Form field the credential control stages under. */
+const API_KEY_FIELD = 'apiKey'
+
+/** The search-provider fields this card edits. */
+export interface WebSearchSettings {
+  /** Credential reference naming the environment key. */
+  apiKeyEnv?: string
+  /** Provider endpoint; blank inherits the provider default. */
+  baseURL?: string
+  /** Maximum searches served within one request. */
+  maxUses?: number
+}
+
+/** What the credentials domain last reported, and for which reference. */
+interface CredentialState {
+  /** Reference this answer describes; a stale response for another one is dropped. */
+  ref: string
+  /** Whether any layer supplies a value for it. */
+  configured: boolean
+  /** Whether `credentials.set` can affect it; false disables the control. */
+  writable: boolean
+}
+
+/** What the web-search card renders. */
+export interface WebSearchCardState extends CardShell {
+  /** Provider endpoint. */
+  baseURL: CardFieldState
+  /** Searches allowed per request. */
+  maxUses: CardFieldState
+  /** The staged credential, which starts blank on every load. */
+  apiKey: CardFieldState
+  /** Whether the Host reports a credential configured for the referenced key. */
+  apiKeyConfigured: boolean
+  /** Whether the credentials domain accepts a write for it; false disables the control. */
+  apiKeyWritable: boolean
+}
+
+/** The registration-side face the web-search card's slot entry injects. */
+export interface WebSearchCardFace extends CardActions {
+  hooks: {
+    /** Card snapshot bound by the renderer as useWebSearchCard. */
+    webSearchCard: SnapshotStore<WebSearchCardState>
+  }
+}
+
+/** Bridges the `web-search-deepseek` scope and the credentials domain onto the card. */
+export class WebSearchCardController {
+  private readonly form: CardForm<WebSearchSettings>
+  private readonly store: SnapshotStore<WebSearchCardState>
+  private credential: CredentialState = { ref: '', configured: false, writable: true }
+
+  /**
+   * @param scope - the bound settings scope for the `web-search-deepseek` namespace.
+   * @param api - wire face used for the credential the section references.
+   */
+  constructor(
+    private readonly scope: SettingsScope<WebSearchSettings>,
+    private readonly api: Pick<IApiClient, 'credentials'>,
+  ) {
+    this.form = new CardForm(
+      scope,
+      [textField('baseURL'), numberField('maxUses')],
+      [{ field: API_KEY_FIELD, write: text => this.writeKey(text) }],
+    )
+    this.store = this.form.bind(() => this.projection())
+    scope.subscribe(() => { void this.readCredential() })
+    void this.readCredential()
+  }
+
+  private projection(): WebSearchCardState {
+    return {
+      ...this.form.shell(),
+      baseURL: this.form.field('baseURL'),
+      maxUses: this.form.field('maxUses'),
+      apiKey: this.form.field(API_KEY_FIELD),
+      apiKeyConfigured: this.credential.configured,
+      apiKeyWritable: this.credential.writable,
+    }
+  }
+
+  /**
+   * Ask the credentials domain about the reference the section currently names.
+   *
+   * The answer is stored with the reference it describes: `apiKeyEnv` can
+   * change between the request and its response, and two reads can settle out
+   * of order, so a response is published only while it still answers for the
+   * reference in force.
+   */
+  private async readCredential(): Promise<void> {
+    const ref = refOf(this.scope.getSnapshot())
+    if (ref !== this.credential.ref) {
+      // A new reference knows nothing yet; keeping the old answer would claim
+      // the key is configured under a name nobody has checked.
+      this.credential = { ref, configured: false, writable: true }
+      this.store.set(this.projection())
+    }
+    let response: Awaited<ReturnType<IApiClient['credentials']['describe']>>
+    try {
+      response = await this.api.credentials.describe({ refs: [ref] })
+    } catch (_credentialReadFailure) {
+      // The card stays usable without this: the key control simply reports the
+      // last state it knew, and a write still reaches the Host.
+      return
+    }
+    if (!response.result.ok || ref !== refOf(this.scope.getSnapshot())) return
+    const view = response.result.value.credentials[ref]
+    const next: CredentialState = {
+      ref,
+      configured: view?.configured ?? false,
+      // An unknown reference is treated as writable: the control stays usable
+      // and the Host is what refuses, rather than the card guessing a refusal.
+      writable: view?.writable ?? true,
+    }
+    if (next.configured === this.credential.configured && next.writable === this.credential.writable) return
+    this.credential = next
+    this.store.set(this.projection())
+  }
+
+  /**
+   * Re-read after the Host reports a change to the reference this card watches.
+   *
+   * A key can be written from somewhere else — the Models page addresses the
+   * same reference — and the settings section does not change when it is, so
+   * without this the badge keeps reporting a state the Host already replaced.
+   * @param ref - the reference the Host reports as changed.
+   */
+  refreshCredential(ref: string): void {
+    if (ref !== this.credential.ref) return
+    void this.readCredential()
+  }
+
+  /**
+   * Build the face the card's slot registration injects.
+   * @returns the card's snapshot and its form actions.
+   */
+  inject(): WebSearchCardFace {
+    return { hooks: { webSearchCard: this.store }, ...this.form.actions() }
+  }
+
+  /**
+   * Write the staged key, then re-read whether the Host now holds one.
+   * @param value - the staged credential literal.
+   * @returns whether the Host reports a configured credential afterwards.
+   */
+  private async writeKey(value: string): Promise<boolean> {
+    try {
+      await this.api.credentials.set({ ref: refOf(this.scope.getSnapshot()), value })
+    } catch (_credentialWriteFailure) {
+      // Refusals surface through the re-read below: the Host is the only
+      // authority on whether the key now exists.
+    }
+    await this.readCredential()
+    return this.credential.configured
+  }
+}
+
+/**
+ * The credential reference the section names, or the provider's default.
+ * @param snapshot - the current scope snapshot.
+ * @returns the reference to address.
+ */
+function refOf(snapshot: SettingsScopeSnapshot<WebSearchSettings>): string {
+  const declared = snapshot.value?.apiKeyEnv
+  return declared !== undefined && declared.length > 0 ? declared : DEFAULT_API_KEY_REF
+}
--- a/packages/client/ui-plugin-config/src/css-modules.d.ts
+++ b/packages/client/ui-plugin-config/src/css-modules.d.ts
@@ -0,0 +1,4 @@
+declare module '*.module.css' {
+  const classes: Record<string, string>
+  export default classes
+}
--- a/packages/client/ui-plugin-config/src/index.ts
+++ b/packages/client/ui-plugin-config/src/index.ts
@@ -0,0 +1,11 @@
+/**
+ * Plugin configuration surface, node half. The empty apply exists so the
+ * plugin appears in the host cordis.yml / Loader; the browser half ships the
+ * settings section through exports["./client"], discovered from the
+ * package.json dsh.client declaration. Every section this page edits is owned
+ * by the Host plugin that registered it, so this package registers no
+ * namespace of its own.
+ */
+
+/** Host plugin body — no host-side behavior for this surface plugin. */
+export function apply(): void {}
--- a/packages/client/ui-plugin-config/src/invariant.ts
+++ b/packages/client/ui-plugin-config/src/invariant.ts
@@ -0,0 +1,31 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-client-ui-plugin-config`.
+ * @module @deepseek-ai/dsh-client-ui-plugin-config/invariant
+ */
+
+/* jscpd:ignore-start */
+import type { Context } from '@deepseek-ai/cordis'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-client-ui-plugin-config'
+
+/** Cordis companion plugin name. */
+export const name = 'client-ui-plugin-config-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * No runtime invariant: this is a browser-side settings surface whose node half owns no event
+ * stream or mutable runtime data; the layering, write refusals, and exposure boundary are Host
+ * contracts covered by the owning plugins and the api-proxy.
+ */
+const install: InvariantInstaller = () => {}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */
--- a/packages/client/ui-plugin-config/tests/apply.spec.ts
+++ b/packages/client/ui-plugin-config/tests/apply.spec.ts
@@ -0,0 +1,134 @@
+/** What the browser half registers, and that it all leaves with the fiber. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it, vi } from 'vitest'
+import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
+import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
+import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { TestRemote, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
+import { SettingsScopeService } from '@deepseek-ai/dsh-client-ui-settings/client'
+import { apply, inject } from '@deepseek-ai/dsh-client-ui-plugin-config/client'
+
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
+async function bench() {
+  const ctx = new Context()
+  await ctx.plugin(SlotsService).await()
+  const locale = new LocaleService(ctx)
+  ctx.provide('locale', locale)
+  const describeCredentials = vi.fn(() => Promise.resolve({ rpcId: 'c', result: { ok: false, error: {} } }))
+  // The section binds its scopes through the Settings surface's service, and
+  // forwarded Host events reach it through the same `$dispatch` handoff the
+  // connection sink makes.
+  new TestRemote(ctx)
+  ctx.provide('connection', {
+    isLoopback: true,
+    api: {
+      settings: { describe: vi.fn(() => Promise.resolve({ rpcId: 's', result: { ok: false, error: {} } })) },
+      credentials: { describe: describeCredentials },
+    },
+  } as never)
+  await ctx.plugin(SettingsScopeService).await()
+  return { ctx, slots: ctx.get('slots') as SlotsService, describeCredentials }
+}
+
+function declareRoot(slots: SlotsService): () => void {
+  return slots.register({
+    name: 'root',
+    children: { 'settings.section': { kind: 'list', scope: 'root' } },
+  } as never, () => null)
+}
+
+describe('ui-plugin-config apply', () => {
+  it('declares the services it uses', () => {
+    expect(inject).toEqual(['slots', 'locale', 'connection', 'remote', 'settingsScope'])
+  })
+
+  it('registers the section and declares the per-plugin card slot', async () => {
+    const { ctx, slots } = await bench()
+    declareRoot(slots)
+
+    await ctx.plugin({ inject: [...inject], apply }).await()
+
+    const section = slots.entries('settings.section')[0]!
+    expect(section.options).toMatchObject({ id: 'plugins', order: 30 })
+    // The nav label is a locale-following thunk; owners resolve it at read time.
+    expect(resolveSlotLabel(section.options.label)).toBe('插件配置')
+    expect(slots.spec('settings.plugin.item')).toMatchObject({ kind: 'list', scope: 'root' })
+  })
+
+  it('registers one card per host-plane section it ships, in a stable order', async () => {
+    const { ctx, slots } = await bench()
+    declareRoot(slots)
+
+    await ctx.plugin({ inject: [...inject], apply }).await()
+
+    expect(slots.entries('settings.plugin.item').map(entry => entry.options.id))
+      .toEqual(['bash', 'agent-loop', 'web-search'])
+  })
+
+  it('injects a live card count and one business face per card', async () => {
+    const { ctx, slots } = await bench()
+    declareRoot(slots)
+    await ctx.plugin({ inject: [...inject], apply }).await()
+
+    const section = slots.entries('settings.section')[0]!
+    expect((section as { inject?: () => unknown }).inject?.()).toEqual({ cardCount: 3 })
+    for (const entry of slots.entries('settings.plugin.item')) {
+      const face = (entry as { inject?: () => unknown }).inject?.() as { hooks: Record<string, unknown> }
+      // Each card injects exactly one snapshot store plus its own actions.
+      expect(Object.keys(face.hooks)).toHaveLength(1)
+    }
+  })
+
+  it('re-reads the credential when the Host reports the watched reference changed', async () => {
+    const { ctx, slots, describeCredentials } = await bench()
+    declareRoot(slots)
+    await ctx.plugin({ inject: [...inject], apply }).await()
+    await vi.waitFor(() => { expect(describeCredentials).toHaveBeenCalled() })
+    describeCredentials.mockClear()
+
+    // A key written on another surface changes no settings section, so this
+    // event is the only thing that reaches the card.
+    ctx.remote.$dispatch('credentials/updated', ['DEEPSEEK_API_KEY'])
+
+    await vi.waitFor(() => { expect(describeCredentials).toHaveBeenCalledTimes(1) })
+  })
+
+  it('ignores a credential change for a reference no card watches', async () => {
+    const { ctx, slots, describeCredentials } = await bench()
+    declareRoot(slots)
+    await ctx.plugin({ inject: [...inject], apply }).await()
+    await vi.waitFor(() => { expect(describeCredentials).toHaveBeenCalled() })
+    describeCredentials.mockClear()
+
+    ctx.remote.$dispatch('credentials/updated', ['SOME_OTHER_KEY'])
+    await Promise.resolve()
+
+    expect(describeCredentials).not.toHaveBeenCalled()
+  })
+
+  it('registers into a declaration that arrives after apply', async () => {
+    const { ctx, slots } = await bench()
+    await ctx.plugin({ inject: [...inject], apply }).await()
+
+    declareRoot(slots)
+
+    await vi.waitFor(() => { expect(slots.entries('settings.section')).toHaveLength(1) })
+  })
+
+  it('collapses every contribution on teardown', async () => {
+    const { ctx, slots } = await bench()
+    declareRoot(slots)
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    await fiber.await()
+    expect(slots.entries('settings.plugin.item')).toHaveLength(3)
+
+    await fiber.dispose()
+
+    expect(slots.entries('settings.section')).toHaveLength(0)
+    expect(slots.spec('settings.plugin.item')).toBeUndefined()
+  })
+})
--- a/packages/client/ui-plugin-config/tests/fields.spec.tsx
+++ b/packages/client/ui-plugin-config/tests/fields.spec.tsx
@@ -0,0 +1,156 @@
+// @vitest-environment jsdom
+/**
+ * Field-control behavior: what a control renders for a staged draft, how an
+ * overridden field offers its reset, and that a control never writes on its own.
+ */
+
+import { cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { SecretField, ValueField } from '../src/client/fields.tsx'
+
+afterEach(cleanup)
+
+const frame = {
+  id: 'field',
+  label: 'Command timeout',
+  hint: 'How long one command may run.',
+  overriddenLabel: 'Overridden',
+  resetLabel: 'Reset to default',
+  invalidLabel: 'Enter a number.',
+  disabled: false,
+  overridden: false,
+  invalid: false,
+}
+
+describe('ValueField', () => {
+  it('stages every keystroke without writing', () => {
+    const onEdit = vi.fn()
+    render(<ValueField {...frame} text="60000" onEdit={onEdit} onReset={vi.fn()} />)
+
+    fireEvent.change(screen.getByLabelText('Command timeout'), { target: { value: '9000' } })
+
+    expect(onEdit).toHaveBeenCalledWith('9000')
+  })
+
+  it('renders the staged text it is given rather than a draft of its own', () => {
+    const { rerender } = render(<ValueField {...frame} text="60000" onEdit={vi.fn()} onReset={vi.fn()} />)
+    expect(screen.getByLabelText('Command timeout')).toHaveProperty('value', '60000')
+
+    rerender(<ValueField {...frame} text="9000" onEdit={vi.fn()} onReset={vi.fn()} />)
+
+    expect(screen.getByLabelText('Command timeout')).toHaveProperty('value', '9000')
+  })
+
+  it('offers the reset only while an override would stand', () => {
+    const onReset = vi.fn()
+    const { rerender } = render(<ValueField {...frame} text="9000" onEdit={vi.fn()} onReset={onReset} />)
+    expect(screen.queryByRole('button', { name: 'Reset to default' })).toBeNull()
+
+    rerender(<ValueField {...frame} overridden text="9000" onEdit={vi.fn()} onReset={onReset} />)
+    fireEvent.click(screen.getByRole('button', { name: 'Reset to default' }))
+
+    expect(screen.getByText('Overridden')).toBeTruthy()
+    expect(onReset).toHaveBeenCalledOnce()
+  })
+
+  it('replaces the hint with the reason an invalid draft cannot be saved', () => {
+    render(<ValueField {...frame} invalid text="soon" onEdit={vi.fn()} onReset={vi.fn()} />)
+
+    expect(screen.getByText('Enter a number.')).toBeTruthy()
+    expect(screen.queryByText('How long one command may run.')).toBeNull()
+    expect(screen.getByLabelText('Command timeout').getAttribute('aria-invalid')).toBe('true')
+  })
+
+  it('hints a numeric keypad and renders a placeholder when asked', () => {
+    render(
+      <ValueField
+        {...frame}
+        numeric
+        placeholder="https://api.deepseek.com"
+        text=""
+        onEdit={vi.fn()}
+        onReset={vi.fn()}
+      />,
+    )
+    const input = screen.getByLabelText('Command timeout')
+
+    expect(input.getAttribute('inputmode')).toBe('numeric')
+    expect(input).toHaveProperty('placeholder', 'https://api.deepseek.com')
+  })
+
+  it('disables the control and its reset while the document is read-only', () => {
+    render(<ValueField {...frame} disabled overridden text="9000" onEdit={vi.fn()} onReset={vi.fn()} />)
+
+    expect(screen.getByLabelText('Command timeout')).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Reset to default' })).toHaveProperty('disabled', true)
+  })
+})
+
+describe('SecretField', () => {
+  const secret = {
+    id: 'key',
+    label: 'API key',
+    hint: 'Stored outside the settings file.',
+    disabled: false,
+  }
+
+  it('stages the draft and never renders it', () => {
+    const onEdit = vi.fn()
+    render(
+      <SecretField
+        {...secret}
+        text=""
+        configured={false}
+        stateLabel="No key is configured."
+        onEdit={onEdit}
+      />,
+    )
+    const input = screen.getByLabelText('API key')
+
+    fireEvent.change(input, { target: { value: 'ds-secret' } })
+
+    expect(onEdit).toHaveBeenCalledWith('ds-secret')
+    expect(input).toHaveProperty('type', 'password')
+  })
+
+  it('reports the configured state the Host holds', () => {
+    const { rerender } = render(
+      <SecretField
+        {...secret}
+        text=""
+        configured={false}
+        stateLabel="No key is configured."
+        onEdit={vi.fn()}
+      />,
+    )
+    expect(screen.getByText('No key is configured.')).toBeTruthy()
+
+    rerender(
+      <SecretField
+        {...secret}
+        text="ds-secret"
+        configured
+        stateLabel="A key is configured."
+        onEdit={vi.fn()}
+      />,
+    )
+
+    expect(screen.getByText('A key is configured.')).toBeTruthy()
+    expect(screen.getByLabelText('API key')).toHaveProperty('value', 'ds-secret')
+  })
+
+  it('disables the control when it is told to', () => {
+    render(
+      <SecretField
+        {...secret}
+        disabled
+        text=""
+        configured
+        stateLabel="A key is configured."
+        onEdit={vi.fn()}
+      />,
+    )
+
+    expect(screen.getByLabelText('API key')).toHaveProperty('disabled', true)
+  })
+})
--- a/packages/client/ui-plugin-config/tests/invariant.spec.ts
+++ b/packages/client/ui-plugin-config/tests/invariant.spec.ts
@@ -0,0 +1,25 @@
+/** The package's node half: an empty host body and an explained empty invariant companion. */
+
+import { describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import InvariantService from '@deepseek-ai/dsh-invariants'
+import * as PluginConfigInvariant from '@deepseek-ai/dsh-client-ui-plugin-config/invariant'
+
+describe('invariant companion', () => {
+  it('reserves package ownership with an empty installer', async () => {
+    const ctx = new Context()
+    await ctx.plugin(InvariantService, { enabled: true })
+
+    await expect(ctx.plugin(PluginConfigInvariant).await()).resolves.toBeDefined()
+  })
+
+  it('has an empty node half', async () => {
+    const { apply } = await import('@deepseek-ai/dsh-client-ui-plugin-config')
+
+    // The host body exists only so the plugin appears in the host cordis.yml;
+    // every surface this package ships lives in the browser half.
+    apply()
+
+    expect(typeof apply).toBe('function')
+  })
+})
--- a/packages/client/ui-plugin-config/tests/section.spec.tsx
+++ b/packages/client/ui-plugin-config/tests/section.spec.tsx
@@ -0,0 +1,325 @@
+// @vitest-environment jsdom
+/**
+ * What the section and its cards show: the empty line when no plugin
+ * contributed one, a card that renders nothing while its namespace is
+ * unavailable, and the save footer that decides when staged edits are written.
+ */
+
+import { cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { AgentLoopCard } from '../src/client/AgentLoopCard.tsx'
+import type { AgentLoopCardProps } from '../src/client/AgentLoopCard.tsx'
+import { BashCard } from '../src/client/BashCard.tsx'
+import type { BashCardProps } from '../src/client/BashCard.tsx'
+import { PluginConfigSection } from '../src/client/PluginConfigSection.tsx'
+import type { PluginConfigSectionProps } from '../src/client/PluginConfigSection.tsx'
+import { WebSearchCard } from '../src/client/WebSearchCard.tsx'
+import type { WebSearchCardProps } from '../src/client/WebSearchCard.tsx'
+import type { AgentLoopCardState } from '../src/client/agent-loop-store.ts'
+import type { BashCardState } from '../src/client/bash-store.ts'
+import type { CardFieldState, CardShell } from '../src/client/card-store.ts'
+import type { WebSearchCardState } from '../src/client/web-search-store.ts'
+import { en } from '../src/client/locales.ts'
+
+afterEach(cleanup)
+
+const t = (key: keyof typeof en) => en[key]
+
+/** A settled form: nothing staged, everything served. */
+const settled: CardShell = {
+  available: true,
+  writable: true,
+  dirty: false,
+  invalid: false,
+  saving: false,
+  failed: false,
+}
+
+/** One control's state, defaulting to an inherited value. */
+function field(text: string, rest: Partial<CardFieldState> = {}): CardFieldState {
+  return { text, overridden: false, invalid: false, ...rest }
+}
+
+function cardActions() {
+  return { edit: vi.fn(), resetField: vi.fn(), save: vi.fn(), discard: vi.fn() }
+}
+
+function renderSection(cardCount: number, cards = 'cards') {
+  const props = {
+    t,
+    cardCount,
+    renderSlot: () => <li>{cards}</li>,
+  } as unknown as PluginConfigSectionProps
+  render(<PluginConfigSection {...props} />)
+}
+
+function renderBash(state: Partial<BashCardState> = {}) {
+  const store = createSnapshotStore<BashCardState>({
+    ...settled,
+    timeoutMs: field('60000'),
+    maxOutputBytes: field('64000'),
+    ...state,
+  })
+  const actions = cardActions()
+  const props = { ...actions, t, useBashCard: bindSnapshotSelector(store) } as unknown as BashCardProps
+  render(<BashCard {...props} />)
+  return actions
+}
+
+describe('PluginConfigSection', () => {
+  it('says so when no plugin contributed a card', () => {
+    renderSection(0)
+
+    expect(screen.getByText(en.empty)).toBeTruthy()
+    expect(screen.queryByText('cards')).toBeNull()
+  })
+
+  it('renders the card list once a plugin contributed one', () => {
+    renderSection(1)
+
+    expect(screen.getByText('cards')).toBeTruthy()
+    expect(screen.queryByText(en.empty)).toBeNull()
+  })
+
+  it('leads with its own heading and intro', () => {
+    renderSection(1)
+
+    expect(screen.getByRole('heading', { name: en.title })).toBeTruthy()
+    expect(screen.getByText(en.intro)).toBeTruthy()
+  })
+})
+
+describe('BashCard', () => {
+  it('renders nothing while its namespace is unavailable', () => {
+    const { container } = render(<div />)
+    renderBash({ available: false })
+
+    expect(container.textContent).toBe('')
+    expect(screen.queryByText(en.bashTitle)).toBeNull()
+  })
+
+  it('shows the plugin and reveals its fields only once expanded', () => {
+    renderBash()
+    expect(screen.getByText(en.bashTitle)).toBeTruthy()
+    expect(screen.queryByLabelText(en.bashTimeoutMs)).toBeNull()
+
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByLabelText(en.bashTimeoutMs)).toBeTruthy()
+    expect(screen.getByLabelText(en.bashMaxOutputBytes)).toBeTruthy()
+  })
+
+  it('stages an edit instead of writing it', () => {
+    const actions = renderBash()
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    fireEvent.change(screen.getByLabelText(en.bashTimeoutMs), { target: { value: '9000' } })
+
+    expect(actions.edit).toHaveBeenCalledWith('timeoutMs', '9000')
+    expect(actions.save).not.toHaveBeenCalled()
+  })
+
+  it('offers the reset for an overridden field only', () => {
+    const actions = renderBash({ timeoutMs: field('9000', { overridden: true }) })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    // One badge and one reset: the output cap is still inherited.
+    expect(screen.getAllByText(en.overridden)).toHaveLength(1)
+    fireEvent.click(screen.getByRole('button', { name: en.reset }))
+
+    expect(actions.resetField).toHaveBeenCalledWith('timeoutMs')
+  })
+
+  it('addresses each of its two fields separately', () => {
+    const actions = renderBash({ maxOutputBytes: field('64000', { overridden: true }) })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    fireEvent.change(screen.getByLabelText(en.bashMaxOutputBytes), { target: { value: '1024' } })
+    fireEvent.click(screen.getByRole('button', { name: en.reset }))
+
+    expect(actions.edit).toHaveBeenCalledWith('maxOutputBytes', '1024')
+    expect(actions.resetField).toHaveBeenCalledWith('maxOutputBytes')
+  })
+
+  it('keeps save and discard inert until something is staged', () => {
+    renderBash()
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByRole('button', { name: en.save })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: en.discard })).toHaveProperty('disabled', true)
+    expect(screen.queryByText(en.unsaved)).toBeNull()
+  })
+
+  it('writes the staged edits when saved, and drops them when discarded', () => {
+    const actions = renderBash({ dirty: true, timeoutMs: field('9000', { overridden: true }) })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    fireEvent.click(screen.getByRole('button', { name: en.save }))
+    fireEvent.click(screen.getByRole('button', { name: en.discard }))
+
+    expect(actions.save).toHaveBeenCalledOnce()
+    expect(actions.discard).toHaveBeenCalledOnce()
+  })
+
+  it('marks a card holding unsaved edits, collapsed or not', () => {
+    renderBash({ dirty: true })
+
+    expect(screen.getByText(en.unsaved)).toBeTruthy()
+  })
+
+  it('blocks the save while a draft is invalid, and says why', () => {
+    renderBash({ dirty: true, invalid: true, timeoutMs: field('soon', { invalid: true }) })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByRole('button', { name: en.save })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: en.discard })).toHaveProperty('disabled', false)
+    expect(screen.getByText(en.invalidNumber)).toBeTruthy()
+  })
+
+  it('reports a save in flight and refuses another', () => {
+    renderBash({ dirty: true, saving: true })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByRole('button', { name: en.saving })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: en.discard })).toHaveProperty('disabled', true)
+  })
+
+  it('reports a save the deployment did not accept', () => {
+    renderBash({ dirty: true, failed: true })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByText(en.saveFailed)).toBeTruthy()
+  })
+
+  it('says the document is read-only and disables its controls', () => {
+    renderBash({ writable: false })
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.getByRole('status')).toHaveProperty('textContent', en.readOnly)
+    expect(screen.getByLabelText(en.bashTimeoutMs)).toHaveProperty('disabled', true)
+  })
+
+  it('collapses again on a second click', () => {
+    renderBash()
+    fireEvent.click(screen.getByText(en.bashTitle))
+    expect(screen.getByLabelText(en.bashTimeoutMs)).toBeTruthy()
+
+    fireEvent.click(screen.getByText(en.bashTitle))
+
+    expect(screen.queryByLabelText(en.bashTimeoutMs)).toBeNull()
+  })
+})
+
+describe('AgentLoopCard', () => {
+  it('stages and saves the only field it owns', () => {
+    const store = createSnapshotStore<AgentLoopCardState>({
+      ...settled,
+      dirty: true,
+      maxParallelToolCalls: field('10'),
+    })
+    const actions = cardActions()
+    const props = {
+      ...actions,
+      t,
+      useAgentLoopCard: bindSnapshotSelector(store),
+    } as unknown as AgentLoopCardProps
+    render(<AgentLoopCard {...props} />)
+
+    fireEvent.click(screen.getByText(en.agentLoopTitle))
+    fireEvent.change(screen.getByLabelText(en.agentLoopMaxParallel), { target: { value: '2' } })
+    fireEvent.click(screen.getByRole('button', { name: en.save }))
+
+    expect(actions.edit).toHaveBeenCalledWith('maxParallelToolCalls', '2')
+    expect(actions.save).toHaveBeenCalledOnce()
+  })
+
+  it('stages a reset for the field it owns', () => {
+    const store = createSnapshotStore<AgentLoopCardState>({
+      ...settled,
+      maxParallelToolCalls: field('2', { overridden: true }),
+    })
+    const actions = cardActions()
+    const props = {
+      ...actions,
+      t,
+      useAgentLoopCard: bindSnapshotSelector(store),
+    } as unknown as AgentLoopCardProps
+    render(<AgentLoopCard {...props} />)
+
+    fireEvent.click(screen.getByText(en.agentLoopTitle))
+    fireEvent.click(screen.getByRole('button', { name: en.reset }))
+
+    expect(actions.resetField).toHaveBeenCalledWith('maxParallelToolCalls')
+  })
+})
+
+describe('WebSearchCard', () => {
+  function renderWebSearch(state: Partial<WebSearchCardState> = {}) {
+    const store = createSnapshotStore<WebSearchCardState>({
+      ...settled,
+      baseURL: field(''),
+      maxUses: field('5'),
+      apiKey: field(''),
+      apiKeyConfigured: false,
+      apiKeyWritable: true,
+      ...state,
+    })
+    const actions = cardActions()
+    const props = { ...actions, t, useWebSearchCard: bindSnapshotSelector(store) } as unknown as WebSearchCardProps
+    render(<WebSearchCard {...props} />)
+    return actions
+  }
+
+  it('reports whether a key is configured without ever showing one', () => {
+    renderWebSearch({ apiKeyConfigured: true })
+    fireEvent.click(screen.getByText(en.webSearchTitle))
+
+    expect(screen.getByText(en.webSearchApiKeySet)).toBeTruthy()
+    expect(screen.getByLabelText(en.webSearchApiKey)).toHaveProperty('type', 'password')
+  })
+
+  it('keeps the key control usable while the settings document is read-only', () => {
+    const actions = renderWebSearch({ writable: false })
+    fireEvent.click(screen.getByText(en.webSearchTitle))
+
+    const key = screen.getByLabelText(en.webSearchApiKey)
+    expect(key).toHaveProperty('disabled', false)
+    expect(screen.getByLabelText(en.webSearchBaseUrl)).toHaveProperty('disabled', true)
+
+    fireEvent.change(key, { target: { value: 'ds-secret' } })
+
+    expect(actions.edit).toHaveBeenCalledWith('apiKey', 'ds-secret')
+  })
+
+  it('disables the key control when the reference itself is not writable', () => {
+    // A key coming from the process environment: the settings document is
+    // writable, the credential is not.
+    renderWebSearch({ apiKeyConfigured: true, apiKeyWritable: false })
+    fireEvent.click(screen.getByText(en.webSearchTitle))
+
+    expect(screen.getByLabelText(en.webSearchApiKey)).toHaveProperty('disabled', true)
+    expect(screen.getByLabelText(en.webSearchBaseUrl)).toHaveProperty('disabled', false)
+  })
+
+  it('stages the endpoint, the search budget, and their resets', () => {
+    const actions = renderWebSearch({
+      baseURL: field('https://search.test/v1', { overridden: true }),
+      maxUses: field('3', { overridden: true }),
+    })
+    fireEvent.click(screen.getByText(en.webSearchTitle))
+
+    fireEvent.change(screen.getByLabelText(en.webSearchBaseUrl), { target: { value: 'https://other.test' } })
+    fireEvent.change(screen.getByLabelText(en.webSearchMaxUses), { target: { value: '4' } })
+    const resets = screen.getAllByRole('button', { name: en.reset })
+    expect(resets).toHaveLength(2)
+    for (const reset of resets) fireEvent.click(reset)
+
+    expect(actions.edit.mock.calls).toEqual([
+      ['baseURL', 'https://other.test'],
+      ['maxUses', '4'],
+    ])
+    expect(actions.resetField.mock.calls).toEqual([['baseURL'], ['maxUses']])
+  })
+})
--- a/packages/client/ui-plugin-config/tests/stores.spec.ts
+++ b/packages/client/ui-plugin-config/tests/stores.spec.ts
@@ -0,0 +1,540 @@
+/**
+ * The staged card form: what a draft shows before it is written, which wire
+ * call a save reaches, and what happens to drafts the Host did not accept.
+ */
+
+import { describe, expect, it, vi } from 'vitest'
+import { stubSettingsScope, type StubSettingsScope } from '@deepseek-ai/dsh-client-test-runtime'
+import { CardForm, numberField, textField } from '../src/client/card-store.ts'
+import { AgentLoopCardController, type AgentLoopSettings } from '../src/client/agent-loop-store.ts'
+import { BashCardController, type BashSettings } from '../src/client/bash-store.ts'
+import { WebSearchCardController, type WebSearchSettings } from '../src/client/web-search-store.ts'
+
+/** Make the stub behave like a Host that accepts every write. */
+function acceptWrites<T>(host: StubSettingsScope<T>): void {
+  const section = (): Record<string, unknown> => ({ ...host.scope.getSnapshot().value as object })
+  const layer = (): Record<string, unknown> => ({ ...host.scope.getSnapshot().user as object })
+  host.set.mockImplementation((field: string, value: unknown) => {
+    host.publish({ value: { ...section(), [field]: value } as T, user: { ...layer(), [field]: value } })
+  })
+  host.unset.mockImplementation((field: string) => {
+    const user = Object.fromEntries(Object.entries(layer()).filter(([key]) => key !== field))
+    const base = host.scope.getSnapshot().base as Record<string, unknown> | undefined
+    host.publish({ value: { ...section(), [field]: base?.[field] } as T, user })
+  })
+}
+
+function credentialsApi(configured: boolean) {
+  const describe = vi.fn(() => Promise.resolve({
+    rpcId: 'c-1' as never,
+    result: { ok: true as const, value: { credentials: { DEEPSEEK_API_KEY: { configured, writable: true } } } },
+  }))
+  const set = vi.fn(() => Promise.resolve({ rpcId: 'c-2' as never, result: { ok: true as const, value: {} } }))
+  return { api: { credentials: { describe, set } } as never, describe, set }
+}
+
+describe('CardForm', () => {
+  function form() {
+    const host = stubSettingsScope<Record<string, unknown>>()
+    const subject = new CardForm(host.scope, [numberField('timeoutMs'), textField('baseURL')])
+    host.publish({
+      status: 'ready',
+      writable: true,
+      value: { timeoutMs: 60_000, baseURL: 'https://search.test/v1' },
+      base: { timeoutMs: 60_000, baseURL: 'https://search.test/v1' },
+      user: {},
+    })
+    return { host, subject }
+  }
+
+  it('shows the effective value and stays clean until something is staged', () => {
+    const { subject } = form()
+
+    expect(subject.field('timeoutMs')).toEqual({ text: '60000', overridden: false, invalid: false })
+    expect(subject.shell()).toMatchObject({ available: true, writable: true, dirty: false, invalid: false })
+  })
+
+  it('marks a field the user layer carries as overridden', () => {
+    const { host, subject } = form()
+
+    host.publish({ value: { timeoutMs: 60_000 }, user: { timeoutMs: 60_000 } })
+
+    // An override equal to the composition default is still an override.
+    expect(subject.field('timeoutMs').overridden).toBe(true)
+  })
+
+  it('writes nothing until the form is saved', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+
+    subject.actions().edit('timeoutMs', '9000')
+
+    expect(subject.field('timeoutMs')).toEqual({ text: '9000', overridden: true, invalid: false })
+    expect(subject.shell().dirty).toBe(true)
+    expect(host.set).not.toHaveBeenCalled()
+
+    await subject.save()
+
+    expect(host.set.mock.calls).toEqual([['timeoutMs', 9_000]])
+    expect(subject.shell()).toMatchObject({ dirty: false, failed: false, saving: false })
+  })
+
+  it('drops a draft that settles back on the value already shown', async () => {
+    const { host, subject } = form()
+
+    subject.actions().edit('timeoutMs', '9000')
+    subject.actions().edit('timeoutMs', '60000')
+
+    expect(subject.shell().dirty).toBe(false)
+    await subject.save()
+
+    expect(host.set).not.toHaveBeenCalled()
+  })
+
+  it('refuses to save while a draft is not a value the field accepts', async () => {
+    const { host, subject } = form()
+
+    subject.actions().edit('timeoutMs', 'soon')
+
+    expect(subject.field('timeoutMs')).toEqual({ text: 'soon', overridden: false, invalid: true })
+    expect(subject.shell()).toMatchObject({ dirty: true, invalid: true })
+
+    await subject.save()
+
+    expect(host.set).not.toHaveBeenCalled()
+    expect(subject.field('timeoutMs').text).toBe('soon')
+  })
+
+  it('stages a reset that clears the field only once saved', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+    host.publish({ value: { timeoutMs: 9_000 }, user: { timeoutMs: 9_000 } })
+
+    subject.actions().resetField('timeoutMs')
+
+    // The badge previews the save: the field will no longer be overridden.
+    expect(subject.field('timeoutMs')).toEqual({ text: '60000', overridden: false, invalid: false })
+    expect(host.unset).not.toHaveBeenCalled()
+
+    await subject.save()
+
+    expect(host.unset.mock.calls).toEqual([['timeoutMs']])
+    expect(subject.shell()).toMatchObject({ dirty: false, failed: false })
+  })
+
+  it('treats resetting an inherited field as no change at all', async () => {
+    const { host, subject } = form()
+
+    subject.actions().resetField('timeoutMs')
+
+    expect(subject.shell().dirty).toBe(false)
+    await subject.save()
+
+    expect(host.unset).not.toHaveBeenCalled()
+  })
+
+  it('clears a number field by emptying it', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+    host.publish({ user: { timeoutMs: 9_000 } })
+
+    subject.actions().edit('timeoutMs', '')
+
+    expect(subject.field('timeoutMs')).toEqual({ text: '', overridden: false, invalid: false })
+    await subject.save()
+
+    expect(host.unset.mock.calls).toEqual([['timeoutMs']])
+  })
+
+  it('clears a text field by emptying it', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+    host.publish({ user: { baseURL: 'https://search.test/v1' } })
+
+    subject.actions().edit('baseURL', '   ')
+    await subject.save()
+
+    expect(host.unset.mock.calls).toEqual([['baseURL']])
+  })
+
+  it('writes the trimmed text of a text field', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+
+    subject.actions().edit('baseURL', '  https://other.test  ')
+    await subject.save()
+
+    expect(host.set.mock.calls).toEqual([['baseURL', 'https://other.test']])
+  })
+
+  it('keeps the drafts a save did not land, and reports the failure', async () => {
+    const { host, subject } = form()
+
+    subject.actions().edit('timeoutMs', '9000')
+    await subject.save()
+
+    // The stub Host accepted the call without storing it, exactly as a
+    // validator that refuses the value does.
+    expect(host.set).toHaveBeenCalledWith('timeoutMs', 9_000)
+    expect(subject.shell()).toMatchObject({ dirty: true, failed: true, saving: false })
+    expect(subject.field('timeoutMs').text).toBe('9000')
+  })
+
+  it('reports a reset the Host did not apply as a failure', async () => {
+    const { host, subject } = form()
+    host.publish({ user: { timeoutMs: 9_000 } })
+
+    subject.actions().resetField('timeoutMs')
+    await subject.save()
+
+    expect(host.unset).toHaveBeenCalledWith('timeoutMs')
+    expect(subject.shell().failed).toBe(true)
+  })
+
+  it('clears the failure as soon as the user edits again', async () => {
+    const { subject } = form()
+
+    subject.actions().edit('timeoutMs', '9000')
+    await subject.save()
+    expect(subject.shell().failed).toBe(true)
+
+    subject.actions().edit('timeoutMs', '9001')
+
+    expect(subject.shell().failed).toBe(false)
+  })
+
+  it('discards every staged edit', async () => {
+    const { host, subject } = form()
+
+    subject.actions().edit('timeoutMs', '9000')
+    subject.actions().discard()
+
+    expect(subject.field('timeoutMs').text).toBe('60000')
+    expect(subject.shell()).toMatchObject({ dirty: false, failed: false })
+
+    // A discard with nothing staged publishes nothing.
+    const before = subject.shell()
+    subject.actions().discard()
+    expect(subject.shell()).toEqual(before)
+
+    await subject.save()
+    expect(host.set).not.toHaveBeenCalled()
+  })
+
+  it('refuses a second save while one is in flight', async () => {
+    const { host, subject } = form()
+    acceptWrites(host)
+
+    subject.actions().edit('timeoutMs', '9000')
+    const first = subject.save()
+    expect(subject.shell().saving).toBe(true)
+    const second = subject.save()
+    await Promise.all([first, second])
+
+    expect(host.set).toHaveBeenCalledTimes(1)
+  })
+
+  it('publishes a projection whenever the scope or a draft changes', () => {
+    const { host, subject } = form()
+    const store = subject.bind(() => subject.field('timeoutMs').text)
+    expect(store.getSnapshot()).toBe('60000')
+
+    host.publish({ value: { timeoutMs: 1_000 } })
+    expect(store.getSnapshot()).toBe('1000')
+
+    subject.actions().edit('timeoutMs', '2000')
+    expect(store.getSnapshot()).toBe('2000')
+  })
+
+  it('refuses to address a field the card never declared', () => {
+    const { subject } = form()
+
+    expect(() => subject.field('nope')).toThrow('plugin card has no field nope')
+  })
+
+  it('renders an absent section value as an empty draft', () => {
+    const host = stubSettingsScope<Record<string, unknown>>()
+    const subject = new CardForm(host.scope, [numberField('timeoutMs'), textField('baseURL')])
+
+    host.publish({ status: 'ready', writable: true, value: {}, base: {}, user: undefined })
+
+    expect(subject.field('timeoutMs').text).toBe('')
+    expect(subject.field('baseURL').text).toBe('')
+    expect(subject.shell().available).toBe(true)
+  })
+
+  it('stays unavailable while the namespace is not served', () => {
+    const host = stubSettingsScope<Record<string, unknown>>()
+    const subject = new CardForm(host.scope, [numberField('timeoutMs')])
+
+    host.publish({ status: 'unavailable' })
+
+    expect(subject.shell()).toMatchObject({ available: false, writable: false })
+  })
+})
+
+describe('BashCardController', () => {
+  it('projects both fields and saves them in one write pass', async () => {
+    const host = stubSettingsScope<BashSettings>()
+    acceptWrites(host)
+    const controller = new BashCardController(host.scope)
+    host.publish({
+      status: 'ready',
+      writable: true,
+      value: { timeoutMs: 5_000, maxOutputBytes: 64_000 },
+      base: { timeoutMs: 60_000, maxOutputBytes: 64_000 },
+      user: { timeoutMs: 5_000 },
+    })
+    const face = controller.inject()
+
+    expect(face.hooks.bashCard.getSnapshot()).toMatchObject({
+      available: true,
+      writable: true,
+      dirty: false,
+      timeoutMs: { text: '5000', overridden: true },
+      maxOutputBytes: { text: '64000', overridden: false },
+    })
+
+    face.edit('timeoutMs', '9000')
+    face.edit('maxOutputBytes', '1024')
+    expect(face.hooks.bashCard.getSnapshot().dirty).toBe(true)
+
+    face.save()
+    await vi.waitFor(() => { expect(host.set).toHaveBeenCalledTimes(2) })
+
+    expect(host.set.mock.calls).toEqual([['timeoutMs', 9_000], ['maxOutputBytes', 1_024]])
+    expect(face.hooks.bashCard.getSnapshot().dirty).toBe(false)
+  })
+
+  it('stages a reset and applies it on save', async () => {
+    const host = stubSettingsScope<BashSettings>()
+    acceptWrites(host)
+    const controller = new BashCardController(host.scope)
+    host.publish({
+      status: 'ready',
+      writable: true,
+      value: { timeoutMs: 5_000 },
+      base: { timeoutMs: 60_000 },
+      user: { timeoutMs: 5_000 },
+    })
+    const face = controller.inject()
+
+    face.resetField('timeoutMs')
+    expect(face.hooks.bashCard.getSnapshot().timeoutMs.text).toBe('60000')
+
+    face.save()
+    await vi.waitFor(() => { expect(host.unset).toHaveBeenCalledWith('timeoutMs') })
+
+    expect(face.hooks.bashCard.getSnapshot()).toMatchObject({
+      dirty: false,
+      timeoutMs: { text: '60000', overridden: false },
+    })
+  })
+
+  it('discards staged edits without writing', () => {
+    const host = stubSettingsScope<BashSettings>()
+    const controller = new BashCardController(host.scope)
+    host.publish({ status: 'ready', writable: true, value: { timeoutMs: 5_000 }, user: {} })
+    const face = controller.inject()
+
+    face.edit('timeoutMs', '9000')
+    face.discard()
+
+    expect(face.hooks.bashCard.getSnapshot().timeoutMs.text).toBe('5000')
+    expect(host.set).not.toHaveBeenCalled()
+  })
+})
+
+describe('AgentLoopCardController', () => {
+  it('saves the only field it owns', async () => {
+    const host = stubSettingsScope<AgentLoopSettings>()
+    acceptWrites(host)
+    const controller = new AgentLoopCardController(host.scope)
+    host.publish({
+      status: 'ready',
+      writable: true,
+      value: { maxParallelToolCalls: 10 },
+      base: { maxParallelToolCalls: 10 },
+      user: {},
+    })
+    const face = controller.inject()
+
+    face.edit('maxParallelToolCalls', '4')
+    face.save()
+    await vi.waitFor(() => { expect(host.set).toHaveBeenCalledWith('maxParallelToolCalls', 4) })
+
+    expect(face.hooks.agentLoopCard.getSnapshot()).toMatchObject({
+      dirty: false,
+      maxParallelToolCalls: { text: '4', overridden: true },
+    })
+  })
+
+  it('reports a read-only document so the card can disable its controls', () => {
+    const host = stubSettingsScope<AgentLoopSettings>()
+    const controller = new AgentLoopCardController(host.scope)
+
+    host.publish({ status: 'ready', writable: false, value: { maxParallelToolCalls: 10 } })
+
+    expect(controller.inject().hooks.agentLoopCard.getSnapshot().writable).toBe(false)
+  })
+})
+
+describe('WebSearchCardController', () => {
+  it('reads the credential state for the reference the section names', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(true)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    const state = () => controller.inject().hooks.webSearchCard.getSnapshot()
+    await vi.waitFor(() => { expect(credentials.describe).toHaveBeenCalled() })
+
+    host.publish({ status: 'ready', writable: true, value: { baseURL: 'https://search.test/v1' }, user: {} })
+    await vi.waitFor(() => { expect(state().apiKeyConfigured).toBe(true) })
+
+    expect(state()).toMatchObject({
+      baseURL: { text: 'https://search.test/v1', overridden: false },
+      apiKey: { text: '', overridden: false },
+    })
+  })
+
+  it('writes the staged key through the credentials domain, never the settings section', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(false)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: {}, user: {} })
+    const face = controller.inject()
+
+    face.edit('apiKey', ' ds-secret ')
+    expect(face.hooks.webSearchCard.getSnapshot().dirty).toBe(true)
+    expect(credentials.set).not.toHaveBeenCalled()
+
+    credentials.describe.mockImplementation(() => Promise.resolve({
+      rpcId: 'c-1' as never,
+      result: { ok: true as const, value: { credentials: { DEEPSEEK_API_KEY: { configured: true, writable: true } } } },
+    }))
+    face.save()
+    await vi.waitFor(() => { expect(credentials.set).toHaveBeenCalled() })
+
+    expect(credentials.set).toHaveBeenCalledWith({ ref: 'DEEPSEEK_API_KEY', value: 'ds-secret' })
+    expect(host.set).not.toHaveBeenCalled()
+    await vi.waitFor(() => {
+      expect(face.hooks.webSearchCard.getSnapshot()).toMatchObject({ dirty: false, apiKeyConfigured: true })
+    })
+  })
+
+  it('keeps the stored key when the draft is left blank', () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(true)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: {}, user: {} })
+    const face = controller.inject()
+
+    face.edit('apiKey', '   ')
+
+    expect(face.hooks.webSearchCard.getSnapshot().dirty).toBe(false)
+    face.save()
+
+    expect(credentials.set).not.toHaveBeenCalled()
+  })
+
+  it('re-reads when the Host reports the watched reference changed', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(false)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: {}, user: {} })
+    await vi.waitFor(() => { expect(credentials.describe).toHaveBeenCalled() })
+    credentials.describe.mockClear()
+
+    // Another reference is not this card's business.
+    controller.refreshCredential('OTHER_KEY')
+    expect(credentials.describe).not.toHaveBeenCalled()
+
+    // A key written on another surface reaches this card only through this signal.
+    credentials.describe.mockImplementation(() => Promise.resolve({
+      rpcId: 'c-1' as never,
+      result: { ok: true as const, value: { credentials: { DEEPSEEK_API_KEY: { configured: true, writable: true } } } },
+    }))
+    controller.refreshCredential('DEEPSEEK_API_KEY')
+
+    await vi.waitFor(() => {
+      expect(controller.inject().hooks.webSearchCard.getSnapshot().apiKeyConfigured).toBe(true)
+    })
+  })
+
+  it('addresses the reference the section declares rather than the default', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(false)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: { apiKeyEnv: 'SEARCH_KEY' }, user: {} })
+    const face = controller.inject()
+
+    face.edit('apiKey', 'ds-secret')
+    face.save()
+    await vi.waitFor(() => { expect(credentials.set).toHaveBeenCalled() })
+
+    expect(credentials.set).toHaveBeenCalledWith({ ref: 'SEARCH_KEY', value: 'ds-secret' })
+  })
+
+  it('reports a key the Host did not store as a failed save', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const credentials = credentialsApi(false)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: {}, user: {} })
+    const face = controller.inject()
+
+    face.edit('apiKey', 'ds-secret')
+    face.save()
+
+    await vi.waitFor(() => {
+      expect(face.hooks.webSearchCard.getSnapshot()).toMatchObject({ failed: true, dirty: true })
+    })
+  })
+
+  it('keeps the card usable when the credential read fails', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const describe = vi.fn(() => Promise.reject(new Error('offline')))
+    const set = vi.fn(() => Promise.reject(new Error('offline')))
+    const controller = new WebSearchCardController(host.scope, { credentials: { describe, set } } as never)
+    const face = controller.inject()
+    await vi.waitFor(() => { expect(describe).toHaveBeenCalled() })
+
+    host.publish({ status: 'ready', writable: true, value: { baseURL: 'https://search.test/v1' }, user: {} })
+    face.edit('apiKey', 'ds-secret')
+    face.save()
+    await vi.waitFor(() => { expect(set).toHaveBeenCalled() })
+
+    expect(face.hooks.webSearchCard.getSnapshot()).toMatchObject({
+      available: true,
+      apiKeyConfigured: false,
+      baseURL: { text: 'https://search.test/v1' },
+    })
+  })
+
+  it('ignores a credential read the Host refused', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    const describe = vi.fn(() => Promise.resolve({
+      rpcId: 'c-1' as never,
+      result: { ok: false as const, error: { code: 'credentials-unavailable', message: 'no provider' } },
+    }))
+    const controller = new WebSearchCardController(host.scope, { credentials: { describe, set: vi.fn() } } as never)
+    await vi.waitFor(() => { expect(describe).toHaveBeenCalled() })
+
+    expect(controller.inject().hooks.webSearchCard.getSnapshot().apiKeyConfigured).toBe(false)
+  })
+
+  it('saves the endpoint and the search budget together', async () => {
+    const host = stubSettingsScope<WebSearchSettings>()
+    acceptWrites(host)
+    const credentials = credentialsApi(true)
+    const controller = new WebSearchCardController(host.scope, credentials.api)
+    host.publish({ status: 'ready', writable: true, value: {}, base: {}, user: {} })
+    const face = controller.inject()
+
+    face.edit('baseURL', 'https://other.test')
+    face.edit('maxUses', '3')
+    face.save()
+    await vi.waitFor(() => { expect(host.set).toHaveBeenCalledTimes(2) })
+
+    expect(host.set.mock.calls).toEqual([['baseURL', 'https://other.test'], ['maxUses', 3]])
+    expect(credentials.set).not.toHaveBeenCalled()
+  })
+})
--- a/packages/client/ui-plugin-config/tsconfig.json
+++ b/packages/client/ui-plugin-config/tsconfig.json
@@ -0,0 +1,45 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../connection"
+    },
+    {
+      "path": "../locale"
+    },
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../runtime"
+    },
+    {
+      "path": "../test-runtime"
+    },
+    {
+      "path": "../ui-primitives"
+    },
+    {
+      "path": "../ui-settings"
+    },
+    {
+      "path": "../../api/remotes/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-slots"
+    },
+    {
+      "path": "../web-react"
+    },
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}
--- a/packages/client/ui-plugin-config/tsdown.config.ts
+++ b/packages/client/ui-plugin-config/tsdown.config.ts
@@ -0,0 +1,3 @@
+import { clientBundle } from '../tsdown.client.ts'
+
+export default clientBundle('@deepseek-ai/dsh-client-ui-plugin-config', ['lib/types/index.js', 'lib/types/invariant.js'])
--- a/packages/client/ui-settings-general/src/client/SettingsRoot.tsx
+++ b/packages/client/ui-settings-general/src/client/SettingsRoot.tsx
@@ -14,7 +14,8 @@
 import { useCallback, useEffect, useId, useRef, useState } from 'react'
 import clsx from 'clsx'
 import {
-  IconAgentPresetOutline16, IconCloseOutline16, IconDataOutline16, IconSettingsOutline16,
+  IconAgentPresetOutline16, IconCloseOutline16, IconDataOutline16,
+  IconPersonalizationOutline16, IconSettingsOutline16,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { SettingsRootComponentProps, SettingsSectionRow } from './shell-contract.ts'
 import css from './SettingsRoot.module.css'
@@ -23,6 +24,7 @@ import css from './SettingsRoot.module.css'
 function navIcon(id: string) {
  if (id === 'models') return <IconDataOutline16 className={css.navIcon} size={16} />
  if (id === 'agent-presets') return <IconAgentPresetOutline16 className={css.navIcon} size={16} />
+  if (id === 'plugins') return <IconPersonalizationOutline16 className={css.navIcon} size={16} />
  return <IconSettingsOutline16 className={css.navIcon} size={16} />
 }

--- a/packages/client/ui-settings-general/tests/settings-root.spec.tsx
+++ b/packages/client/ui-settings-general/tests/settings-root.spec.tsx
@@ -170,6 +170,28 @@ describe('SettingsPanel navigation', () => {
    expect(screen.getByTestId('section-general')).toBeTruthy()
  })

+  it('gives every section a nav glyph, distinct for the ids the shell knows', () => {
+    mount({
+      rows: [
+        { id: 'general', order: 0, label: 'General' },
+        { id: 'models', order: 10, label: 'Models' },
+        { id: 'agent-presets', order: 20, label: 'Agent presets' },
+        { id: 'plugins', order: 30, label: 'Plugins' },
+        { id: 'contributed', order: 40, label: 'Contributed' },
+      ],
+    })
+    openPanel()
+    // Glyphs carry no id of their own, so the drawn paths are what tells them apart.
+    const glyphs = ['General', 'Models', 'Agent presets', 'Plugins', 'Contributed']
+      .map(name => screen.getByRole('button', { name }).querySelector('svg')?.innerHTML)
+
+    expect(glyphs.every(glyph => glyph !== undefined && glyph !== '')).toBe(true)
+    // The three ids the shell names get their own glyph; every other section —
+    // including one this package never heard of — shares the gear.
+    expect(new Set(glyphs.slice(0, 4)).size).toBe(4)
+    expect(glyphs[4]).toBe(glyphs[0])
+  })
+
  it('switches the rendered section on nav click', () => {
    mount()
    openPanel()
--- a/packages/client/ui-settings/src/client/settings-scope.ts
+++ b/packages/client/ui-settings/src/client/settings-scope.ts
@@ -8,7 +8,7 @@
 import { Service } from '@deepseek-ai/cordis'
 import type { Context } from '@deepseek-ai/cordis'
 import type {
-  ConnectionHandle, IApiClient, SettingsNamespaceView,
+  ConnectionHandle, IApiClient, SettingsNamespaceView, SettingsPathOpView,
 } from '@deepseek-ai/dsh-client-connection/client'
 import { rehydrateSchema, validateDraft } from '@deepseek-ai/dsh-client-schema-form'
 import {
@@ -59,6 +59,8 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
    this.store = createSnapshotStore<SettingsScopeSnapshot<T>>({
      status: persistence === 'host' ? 'loading' : 'unavailable',
      value: undefined,
+      base: undefined,
+      user: undefined,
      revision: undefined,
      writable: false,
      mode: persistence,
@@ -96,6 +98,20 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
   * @returns settlement after the write and any latest-write recovery read.
   */
  set(field: string, value: unknown): Promise<void> {
+    return this.write({ op: 'set', path: [field], value })
+  }
+
+  /**
+   * Queue one field clear; see {@link SettingsScope.unset} for the ordering,
+   * revision, and recovery contract.
+   * @param field - scalar field inside the namespace section.
+   * @returns settlement after the clear and any latest-write recovery read.
+   */
+  unset(field: string): Promise<void> {
+    return this.write({ op: 'unset', path: [field] })
+  }
+
+  private write(op: SettingsPathOpView): Promise<void> {
    this.readGeneration += 1
    const generation = ++this.writeGeneration
    return this.enqueue(async () => {
@@ -104,7 +120,7 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
      try {
        response = await this.api.settings.mutate({
          ns: this.spec.namespace,
-          ops: [{ op: 'set', path: [field], value }],
+          ops: [op],
          ...(revision === undefined ? {} : { expectedRevision: revision }),
        })
      } catch (_settingsWriteFailure) {
@@ -169,6 +185,8 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
    const decoded = publish ? this.decode(view) : undefined
    this.store.update((draft) => {
      draft.revision = view.revision
+      draft.base = view.base
+      draft.user = view.user
      if (writable !== undefined) draft.writable = writable
      if (decoded === undefined) return
      draft.status = 'ready'
--- a/packages/client/ui-settings/tests/settings-scope.spec.ts
+++ b/packages/client/ui-settings/tests/settings-scope.spec.ts
@@ -293,6 +293,77 @@ describe('SettingsScopeController', () => {
    expect(describeCall).not.toHaveBeenCalled()
    expect(mutate).not.toHaveBeenCalled()
  })
+
+  it('carries the composition base and the user layer into the snapshot', async () => {
+    const layered: SettingsNamespaceView = {
+      ...view({ preference: 'dark' }, 3),
+      base: { preference: 'system' },
+      user: { preference: 'dark' },
+    }
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(ok({ writable: true, hasDocument: true, namespaces: [layered] }))
+    const scope = new SettingsScopeController<UiTestSettings>(
+      { settings: { describe: describeCall } } as never,
+      { namespace: 'ui-test' },
+    )
+
+    await scope.load()
+
+    expect(scope.getSnapshot()).toMatchObject({
+      value: { preference: 'dark' },
+      base: { preference: 'system' },
+      user: { preference: 'dark' },
+    })
+  })
+
+  it('reports an inherited field as absent from the user layer', async () => {
+    const inherited: SettingsNamespaceView = { ...view({ preference: 'system' }, 1), base: { preference: 'system' } }
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(ok({ writable: true, hasDocument: true, namespaces: [inherited] }))
+    const scope = new SettingsScopeController<UiTestSettings>(
+      { settings: { describe: describeCall } } as never,
+      { namespace: 'ui-test' },
+    )
+
+    await scope.load()
+
+    expect(scope.getSnapshot().user).toBeUndefined()
+  })
+
+  it('clears one field through an unset op fenced by the held revision', async () => {
+    const mutate = vi.fn().mockResolvedValueOnce(ok(view({ preference: 'system' }, 4)))
+    const describeCall = vi.fn().mockResolvedValueOnce(described({ preference: 'dark' }, 3))
+    const scope = new SettingsScopeController<UiTestSettings>(
+      { settings: { describe: describeCall, mutate } } as never,
+      { namespace: 'ui-test' },
+    )
+    await scope.load()
+
+    await scope.unset('preference')
+
+    expect(mutate).toHaveBeenCalledWith({
+      ns: 'ui-test',
+      ops: [{ op: 'unset', path: ['preference'] }],
+      expectedRevision: 3,
+    })
+    expect(scope.getSnapshot()).toMatchObject({ value: { preference: 'system' }, revision: 4 })
+  })
+
+  it('recovers the Host state when the latest clear is refused', async () => {
+    const mutate = vi.fn().mockResolvedValueOnce(rejected())
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(described({ preference: 'dark' }, 3))
+      .mockResolvedValueOnce(described({ preference: 'light' }, 5))
+    const scope = new SettingsScopeController<UiTestSettings>(
+      { settings: { describe: describeCall, mutate } } as never,
+      { namespace: 'ui-test' },
+    )
+    await scope.load()
+
+    await scope.unset('preference')
+
+    expect(scope.getSnapshot()).toMatchObject({ value: { preference: 'light' }, revision: 5 })
+  })
 })

 describe('SettingsScopeService.bind', () => {
--- a/packages/core/agent-loop/README.i18n.yaml
+++ b/packages/core/agent-loop/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/agent-loop/README.md
-README.md: 889fd74671eddc202b814cdf2749069ec3cea02c
-README.zh.md: b65b5334d735a1e0b51fa517ce41c0c953f87cf7
+README.md: 13f79b9e70bfb658c459240c97acf39025df2ac0
+README.zh.md: ad8fc9478eb45620cee303eb7295b6b3fe8b0ed3
--- a/packages/core/agent-loop/README.md
+++ b/packages/core/agent-loop/README.md
@@ -49,7 +49,7 @@ interface Config {
 }
 ```

-Configured agents start automatically. A model call requires both `provider` and `model`; `agent/request` may supply a missing pair before dispatch. An optional positive `maxTokens` seeds each conversation request's output cap and is logged in its request header. `maxParallelToolCalls` bounds every agent's rolling pool for parallel-safe calls and defaults to `10`. `cwd` applies only to fresh sessions, while `resumeSessionId` retains persisted metadata. Configured agents use the deployment persona, and programmatic setup can shadow it per agent. This plugin supplies the per-agent `provider`, `model`, and `cwd` prompt variables; harness identity and deployment persona belong to `dsh-system-prompt`.
+Configured agents start automatically. A model call requires both `provider` and `model`; `agent/request` may supply a missing pair before dispatch. An optional positive `maxTokens` seeds each conversation request's output cap and is logged in its request header. `maxParallelToolCalls` bounds every agent's rolling pool for parallel-safe calls and defaults to `10`; it is also the whole of the `agent-loop` Settings section, so a user layer over this entry caps the next tool group without a restart, and a value that is not a positive integer is refused at the write rather than at that group. `agents` is deliberately absent from that section — it is consumed once when the service starts, so a stored change could only look like it had an effect. `cwd` applies only to fresh sessions, while `resumeSessionId` retains persisted metadata. Configured agents use the deployment persona, and programmatic setup can shadow it per agent. This plugin supplies the per-agent `provider`, `model`, and `cwd` prompt variables; harness identity and deployment persona belong to `dsh-system-prompt`.

 ### Internal concrete driver

--- a/packages/core/agent-loop/README.zh.md
+++ b/packages/core/agent-loop/README.zh.md
@@ -49,7 +49,7 @@ interface Config {
 }
 ```

-通过配置创建的 agent 会自动启动。模型调用同时需要 `provider` 和 `model`；`agent/request` 可以在分发前补齐缺失的这一对值。可选的正数 `maxTokens` 会为每次对话请求提供初始输出上限，并记录在请求 header 中。`maxParallelToolCalls` 限制每个 agent 针对并行安全调用使用的滚动池，默认值为 `10`。`cwd` 仅应用于全新会话，而 `resumeSessionId` 保留持久化元数据。通过配置创建的 agent 使用部署 persona；编程式 setup 可以按 agent 遮蔽它。该插件为每个 agent 提供 `provider`、`model` 和 `cwd` 提示词变量；harness 身份与部署 persona 属于 `dsh-system-prompt`。
+通过配置创建的 agent 会自动启动。模型调用同时需要 `provider` 和 `model`；`agent/request` 可以在分发前补齐缺失的这一对值。可选的正数 `maxTokens` 会为每次对话请求提供初始输出上限，并记录在请求 header 中。`maxParallelToolCalls` 限制每个 agent 针对并行安全调用使用的滚动池，默认值为 `10`；它同时也是 `agent-loop` Settings 段的全部内容，因此叠加在该条目之上的用户层无需重启即可限制下一组工具调用，而非正整数的值会在写入时被拒绝，而不是到那一组时才失败。`agents` 刻意不在该段中——它在服务启动时被消费一次，所以存储的改动只会看起来生效。`cwd` 仅应用于全新会话，而 `resumeSessionId` 保留持久化元数据。通过配置创建的 agent 使用部署 persona；编程式 setup 可以按 agent 遮蔽它。该插件为每个 agent 提供 `provider`、`model` 和 `cwd` 提示词变量；harness 身份与部署 persona 属于 `dsh-system-prompt`。

 ### 包内部具体驱动器

--- a/packages/core/agent-loop/package.json
+++ b/packages/core/agent-loop/package.json
@@ -39,7 +39,8 @@
    "@deepseek-ai/dsh-session-persistence": "workspace:^",
    "@deepseek-ai/dsh-system-prompt": "workspace:^",
    "@deepseek-ai/dsh-tools": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  },
  "dependencies": {
    "@deepseek-ai/schemastery": "workspace:^"
@@ -54,6 +55,7 @@
    "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
    "@deepseek-ai/dsh-system-prompt": "workspace:^",
    "@deepseek-ai/dsh-tools": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  }
 }
--- a/packages/core/agent-loop/src/index.ts
+++ b/packages/core/agent-loop/src/index.ts
@@ -20,6 +20,7 @@ import type {
  SessionStartSource,
 } from '@deepseek-ai/dsh-agent'
 import { errorChain } from '@deepseek-ai/dsh-llm'
+import { installSettingsSection, settingsNamespace } from '@deepseek-ai/dsh-settings'
 import { SessionId, SessionPreparation } from '@deepseek-ai/dsh-session'
 import type { Session, SessionHeader } from '@deepseek-ai/dsh-session'
 import type {} from '@deepseek-ai/dsh-system-prompt'
@@ -232,6 +233,24 @@ function applyLauncherIdentities(
  })
 }

+/** Settings namespace carrying the tool-call parallelism a user owns. */
+export const AGENT_LOOP_SETTINGS_NAMESPACE = settingsNamespace('agent-loop')
+
+/**
+ * The agent-loop fields a user owns. Deliberately a strict subset of
+ * {@link Config}: `agents` is a boot-time composition array consumed once when
+ * the service starts, so a stored change could only look like it had an effect.
+ */
+export interface AgentLoopSettings {
+  /** Maximum parallel-safe calls in flight per agent step. */
+  maxParallelToolCalls: number
+}
+
+/** Schema of the agent-loop settings section. */
+export const AGENT_LOOP_SETTINGS_SCHEMA: z<AgentLoopSettings> = z.object({
+  maxParallelToolCalls: z.number().step(1).min(1).default(DEFAULT_MAX_PARALLEL_TOOL_CALLS),
+})
+
 /** Agent-loop plugin configuration. */
 export interface Config {
  /**
@@ -299,11 +318,31 @@ export class AgentLoop extends Service implements AgentFactory {

  constructor(ctx: Context, config: Config) {
    super(ctx, 'agentLoop')
+    const entry: AgentLoopSettings = {
+      maxParallelToolCalls: resolveMaxParallelToolCalls(config.maxParallelToolCalls),
+    }
+    let source: () => AgentLoopSettings = () => entry
    this.config = {
      ...config,
      agents: applyLauncherIdentities(config.agents, ctx.get(CONFIGURED_AGENT_IDENTITIES_KEY)),
-      maxParallelToolCalls: resolveMaxParallelToolCalls(config.maxParallelToolCalls),
+      // Read through on every scheduler decision: `tool-calls.ts` destructures
+      // this at the start of each group, so a committed change caps the next
+      // group without disturbing the one in flight.
+      get maxParallelToolCalls() {
+        return source().maxParallelToolCalls
+      },
    }
+    installSettingsSection(ctx, AGENT_LOOP_SETTINGS_NAMESPACE, AGENT_LOOP_SETTINGS_SCHEMA, entry, {
+      // The schema admits any integer above zero; `resolveMaxParallelToolCalls`
+      // owns the whole rule, so refusing here keeps the running scheduler on
+      // its last good cap instead of failing at the next tool group.
+      validate: value => void resolveMaxParallelToolCalls(value.maxParallelToolCalls),
+      setSource: (current) => {
+        source = current
+      },
+      // Nothing is derived from the cap: the getter above is the only reader.
+      onChange: () => {},
+    })
    validateConfiguredAgents(this.config.agents)
    this.ownership = new FactoryOwnership(ctx.fiber)
    this.runtime = { ctx }
--- a/packages/core/agent-loop/tests/config-session-id.spec.ts
+++ b/packages/core/agent-loop/tests/config-session-id.spec.ts
@@ -336,7 +336,10 @@ describe('config-driven session id', () => {

    const resumeEffect = loopFiber.getEffects().find(effect => effect.label === 'agentLoop.resume(main)')
    expect(resumeEffect?.children.map(child => child.label)).toEqual(['ctx.plugin()'])
-    expect(loopFiber.getEffects().filter(effect => effect.label === 'ctx.plugin()')).toEqual([])
+    // Exactly one plugin effect sits at the fiber's own level — the optional
+    // settings wiring, whose `ctx.inject` cordis labels like any other plugin.
+    // A resumed agent joining it there is the regression this pins.
+    expect(loopFiber.getEffects().filter(effect => effect.label === 'ctx.plugin()')).toHaveLength(1)

    await loopFiber.dispose()
  })
--- a/packages/core/agent-loop/tests/settings.spec.ts
+++ b/packages/core/agent-loop/tests/settings.spec.ts
@@ -0,0 +1,106 @@
+/** The `agent-loop` settings section layered over the composition entry. */
+
+import { describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import type { Fiber } from '@deepseek-ai/cordis'
+import LlmService from '@deepseek-ai/dsh-llm'
+import SessionStore from '@deepseek-ai/dsh-session'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRegistry from '@deepseek-ai/dsh-tools'
+import AgentRegistry from '@deepseek-ai/dsh-agent'
+import { Settings } from '@deepseek-ai/dsh-settings'
+import type { SettingsNamespace } from '@deepseek-ai/dsh-settings'
+import AgentLoop, { AGENT_LOOP_SETTINGS_NAMESPACE } from '@deepseek-ai/dsh-agent-loop'
+
+/** The smallest real provider: one in-memory document, always writable. */
+class MemorySettings extends Settings {
+  doc: Record<string, unknown> = {}
+
+  get writable(): boolean {
+    return true
+  }
+
+  protected load(): Promise<Record<string, unknown>> {
+    return Promise.resolve(structuredClone(this.doc))
+  }
+
+  protected persist(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
+    this.doc = { ...this.doc, [ns]: structuredClone(section) }
+    return Promise.resolve()
+  }
+}
+
+async function boot(): Promise<{ ctx: Context; settingsFiber: Fiber; loopFiber: Fiber }> {
+  const ctx = new Context()
+  await ctx.plugin(LlmService)
+  await ctx.plugin(SessionStore)
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRegistry)
+  await ctx.plugin(AgentRegistry)
+  const settingsFiber = ctx.plugin(MemorySettings)
+  await settingsFiber.await()
+  const loopFiber = ctx.plugin(AgentLoop, { agents: [], maxParallelToolCalls: 4 })
+  await loopFiber.await()
+  return { ctx, settingsFiber, loopFiber }
+}
+
+describe('agent-loop settings section', () => {
+  it('layers the stored parallel cap over the composition entry', async () => {
+    const bench = await boot()
+    expect(bench.ctx.agentLoop.config.maxParallelToolCalls).toBe(4)
+
+    await bench.ctx.settings.update(AGENT_LOOP_SETTINGS_NAMESPACE, { maxParallelToolCalls: 1 })
+
+    expect(bench.ctx.agentLoop.config.maxParallelToolCalls).toBe(1)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('refuses a non-positive cap at the write', async () => {
+    const bench = await boot()
+
+    await expect(bench.ctx.settings.update(AGENT_LOOP_SETTINGS_NAMESPACE, { maxParallelToolCalls: 0 }))
+      .rejects.toThrow()
+
+    expect(bench.ctx.agentLoop.config.maxParallelToolCalls).toBe(4)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('never offers the composed agents array to the settings document', async () => {
+    const bench = await boot()
+
+    const descriptor = bench.ctx.settings.describe().find(row => String(row.ns) === 'agent-loop')
+
+    expect(Object.keys(descriptor?.value as object)).toEqual(['maxParallelToolCalls'])
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('keeps serving the composed agents array to its own consumers', async () => {
+    const bench = await boot()
+
+    await bench.ctx.settings.update(AGENT_LOOP_SETTINGS_NAMESPACE, { maxParallelToolCalls: 2 })
+
+    expect(bench.ctx.agentLoop.config.agents).toEqual([])
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('falls back to the composition entry when the settings provider detaches', async () => {
+    const bench = await boot()
+    await bench.ctx.settings.update(AGENT_LOOP_SETTINGS_NAMESPACE, { maxParallelToolCalls: 1 })
+    expect(bench.ctx.agentLoop.config.maxParallelToolCalls).toBe(1)
+
+    await bench.settingsFiber.dispose()
+
+    expect(bench.ctx.agentLoop.config.maxParallelToolCalls).toBe(4)
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('releases the namespace when the service unloads', async () => {
+    const bench = await boot()
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).toContain('agent-loop')
+
+    await bench.loopFiber.dispose()
+
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).not.toContain('agent-loop')
+    await bench.ctx.fiber.dispose()
+  })
+})
--- a/packages/core/agent-loop/tsconfig.json
+++ b/packages/core/agent-loop/tsconfig.json
@@ -38,6 +38,9 @@
    {
      "path": "../../core/scope"
    },
+    {
+      "path": "../../settings/settings"
+    },
    {
      "path": "../../support/invariants"
    }
--- a/packages/host/apiproxy/README.i18n.yaml
+++ b/packages/host/apiproxy/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/host/apiproxy/README.md
-README.md: 7967b41b73f5f853fbfa67364b8a1c1a4156de08
-README.zh.md: 325ea29a736385ffef511ea1e02211b8b43be69f
+README.md: 5aee9321505d50ba7ee306ba19746373085bca27
+README.zh.md: 5ac25e7429f0ab8c4ad932da650d16bd1585f6e5
--- a/packages/host/apiproxy/README.md
+++ b/packages/host/apiproxy/README.md
@@ -56,7 +56,7 @@ The `agentPreset.list` domain exposes the deployment's preset roster so a browse

 The `command.*` and `skill.*` domains expose the host command registry and skill catalog to clients. Every method addresses one session's agent by `sessionId` (a served session always has an Agent; `command.*` resumes cold sessions through the same path as `session.*`, while `skill.list` resolves the project root from the session header without touching the Agent registry). `skill.list` serves the composer's menu: it returns every user-invocable skill with its `modelInvocable` flag, so menus can mark user-only (`disable-model-invocation`) entries whose only invocation path is the slash gesture. Listing is the skill domain's only RPC — invocation itself is an ordinary `session.prompt` whose whitespace-bounded `/name` tokens `dsh-tool-skill` recognizes at the pre-step boundary and answers with injected `<skill_content>` context, so every entry point (Web, TUI, and ACP) shares one deterministic path—including for hand-typed text—with no dedicated invocation wire. `command.execute` runs a slash-command line host-side with pure admission semantics: the response reports whether the line resolved to a handler plus the minted lifecycle `commandId` when it did (correlating the acknowledgment with the flow node), while the outcome rides the durably logged `command/run`/`command/done` lifecycle pair broadcast on the mux stream. Command handlers may legitimately outlast the 30-second transport health deadline, so `command.execute` carries only caller/connection cancellation; that signal cancels the running handler. `commands/change` rides the forwarded-event frame as the registry-wide catalog invalidation signal: clients refetch `command.list` instead of diffing. Forwarded `agent-preset/selected` is its per-session counterpart, emitted from the logged selection commit: recomposing a blank session's agent re-parents its scope without registering anything, so both catalogs that session's composition decides (`command.list`, `skill.list`) go stale with no registry change to announce it.

-The `settings.*`, `credentials.*`, and `llm.*` domains are the configuration-page wire. The settings domain serves the namespaces addressed by registered configurable providers (`ctx.llm.listConfigurableProviders()`) plus a small explicit allowlist — the Web preferences `locale`, `permission`, `ui-conversation`, and `ui-theme`, and the product-owned `ui-onboarding`; adding a Settings registration alone never makes it remotely readable or writable. Any other namespace answers `settings-not-exposed` — the same answer an unregistered namespace gets, so no caller can enumerate the registry by probing. `settings.describe` returns each exposed namespace's serialized schemastery schema, redacted layered values (resolved/`base`/`user` — a field's presence in `user` marks it user-overridden), the `secrets` slot list, the section's `revision`, and the boolean `hasDocument` capability flag. The browser receives no Host path: pathless `settings.openDocument` asks the provider to materialize its document and then hands the Host-resolved result to the native opener, so no browser payload can select any filesystem target. `settings.update`/`settings.replace` write the user layer; `settings.mutate` applies path ops (`set`/`unset`) against the section as stored, which is the removal path for a client holding the redacted view — rebuilding a section from it and replacing wholesale would delete the secrets the wire never returned. Any write may carry `expectedRevision`; a stale one answers `settings-conflict` with both revisions rather than overwriting the writer that landed first, and every other seam refusal folds into `settings-rejected`. Secret-role values never ride any response in any layer; a secret crosses the wire in exactly one direction — inside an `update`/`mutate` payload or `credentials.set`. `credentials.describe` returns value-free views (`configured`/`source`/`writable`), and `credentials.set`/`credentials.unset` map a shadowed-reference refusal onto `credential-rejected`. `llm.providers` merges the configurable-provider directory with live routes (dormant entries carry `active: false`; undeclared live routes append with no settings address) and `llm.models` is the session-independent catalog. `llm.discoverModels` interrogates a provider endpoint the page is still drafting: `settingsNs` selects the adapter family that knows how to read the listing, and the endpoint, protocol, and key come from the form rather than from storage. It writes nothing — the reply is candidates, and only a later `settings.mutate` decides what a route serves — so its `apiKey` is the third payload on which a secret may ride, alongside `settings.update`/`mutate` and `credentials.set`. The host never stores or returns it; like the other two it does ride the client's outgoing envelope, which `subscribeEnvelopes()` observers can see, and redacting that tap is a configuration-plane-wide change rather than this method's to make alone. Every refusal (an unserved namespace, a protocol with no readable listing, an unreachable endpoint, a rejected credential) folds into `model-discovery-failed`, whose message is the adapter's own text and whose details name the endpoint asked but never the credential offered. Invalidations keep every surface converged without polling. `settings/document-updated` and `credentials/updated` ride the verbatim forwarded-event frame (see below), so a raw settings change whose resolved value is unchanged still reaches clients, and a credential invalidation still carries reference names only, never values. `llm/adapters-updated` is forwarded beside `settings/document-updated`; concrete model consumers subscribe to both owner events directly because topology commits and settings documents can independently change their directories. The browser carrier restricts the whole configuration plane, reads and native actions included (`settings.describe`/`openDocument`/`update`/`replace`/`mutate`, `credentials.describe`/`set`/`unset`), to loopback same-origin requests — the `host.pickDirectory` privileged set. A composition without a settings or credential provider answers those domains with an actionable `internal` error naming the missing plugin.
+The `settings.*`, `credentials.*`, and `llm.*` domains are the configuration-page wire. The settings domain serves the namespaces addressed by registered configurable providers (`ctx.llm.listConfigurableProviders()`) plus a small explicit allowlist — the Web preferences `locale`, `permission`, `ui-conversation`, and `ui-theme`, the host-plane plugin sections `agent-loop`, `bash`, and `web-search-deepseek` that the plugin configuration page edits, and the product-owned `ui-onboarding`; adding a Settings registration alone never makes it remotely readable or writable. Any other namespace answers `settings-not-exposed` — the same answer an unregistered namespace gets, so no caller can enumerate the registry by probing. `settings.describe` returns each exposed namespace's serialized schemastery schema, redacted layered values (resolved/`base`/`user` — a field's presence in `user` marks it user-overridden), the `secrets` slot list, the section's `revision`, and the boolean `hasDocument` capability flag. The browser receives no Host path: pathless `settings.openDocument` asks the provider to materialize its document and then hands the Host-resolved result to the native opener, so no browser payload can select any filesystem target. `settings.update`/`settings.replace` write the user layer; `settings.mutate` applies path ops (`set`/`unset`) against the section as stored, which is the removal path for a client holding the redacted view — rebuilding a section from it and replacing wholesale would delete the secrets the wire never returned. Any write may carry `expectedRevision`; a stale one answers `settings-conflict` with both revisions rather than overwriting the writer that landed first, and every other seam refusal folds into `settings-rejected`. Secret-role values never ride any response in any layer; a secret crosses the wire in exactly one direction — inside an `update`/`mutate` payload or `credentials.set`. `credentials.describe` returns value-free views (`configured`/`source`/`writable`), and `credentials.set`/`credentials.unset` map a shadowed-reference refusal onto `credential-rejected`. `llm.providers` merges the configurable-provider directory with live routes (dormant entries carry `active: false`; undeclared live routes append with no settings address) and `llm.models` is the session-independent catalog. `llm.discoverModels` interrogates a provider endpoint the page is still drafting: `settingsNs` selects the adapter family that knows how to read the listing, and the endpoint, protocol, and key come from the form rather than from storage. It writes nothing — the reply is candidates, and only a later `settings.mutate` decides what a route serves — so its `apiKey` is the third payload on which a secret may ride, alongside `settings.update`/`mutate` and `credentials.set`. The host never stores or returns it; like the other two it does ride the client's outgoing envelope, which `subscribeEnvelopes()` observers can see, and redacting that tap is a configuration-plane-wide change rather than this method's to make alone. Every refusal (an unserved namespace, a protocol with no readable listing, an unreachable endpoint, a rejected credential) folds into `model-discovery-failed`, whose message is the adapter's own text and whose details name the endpoint asked but never the credential offered. Invalidations keep every surface converged without polling. `settings/document-updated` and `credentials/updated` ride the verbatim forwarded-event frame (see below), so a raw settings change whose resolved value is unchanged still reaches clients, and a credential invalidation still carries reference names only, never values. `llm/adapters-updated` is forwarded beside `settings/document-updated`; concrete model consumers subscribe to both owner events directly because topology commits and settings documents can independently change their directories. The browser carrier restricts the whole configuration plane, reads and native actions included (`settings.describe`/`openDocument`/`update`/`replace`/`mutate`, `credentials.describe`/`set`/`unset`), to loopback same-origin requests — the `host.pickDirectory` privileged set. A composition without a settings or credential provider answers those domains with an actionable `internal` error naming the missing plugin.

 ## Carrier layer (`/client` + root)

--- a/packages/host/apiproxy/README.zh.md
+++ b/packages/host/apiproxy/README.zh.md
@@ -56,7 +56,7 @@ Workspace 列表与 Session 列表是相互独立的重连基线。`workspace.cr

 `command.*` 与 `skill.*` 领域向客户端暴露宿主命令注册表和 skill（技能）目录。每个方法都通过 `sessionId` 寻址一个会话的 Agent（被服务的会话必有 Agent；`command.*` 经由与 `session.*` 相同的路径恢复冷会话，而 `skill.list` 从会话头解析项目根目录，不触碰 Agent 注册表）。`skill.list` 服务于 composer 的菜单：它返回每一个用户可调用的 skill 及其 `modelInvocable` 标志，让菜单能够标出仅限用户（`disable-model-invocation`）的条目——斜杠手势是这类条目唯一的调用路径。列表是 skill 领域唯一的 RPC——调用本身就是一次普通的 `session.prompt`，`dsh-tool-skill` 会在 pre-step 边界识别其中以空白为界的 `/name` token，并以注入的 `<skill_content>` 上下文作答，因此所有入口（Web、TUI 与 ACP（Agent Client Protocol））共享同一条确定性路径，手动键入的文本也走该路径，且没有专设的调用协议。`command.execute` 在宿主侧运行一条斜杠命令行，语义为纯准入：响应报告该行是否解析到处理器，并在解析到时回带铸造的生命周期 `commandId`（将本次确认与流节点关联）；结局经由持久落账并在 mux 流广播的 `command/run`/`command/done` 生命周期事件对承载。命令处理器运行超过 30 秒的传输健康时限仍属正常，因此 `command.execute` 仅携带调用方／连接取消信号；该信号可取消正在运行的处理器。`commands/change` 搭乘转发事件帧作为注册表级目录失效信号：客户端重新拉取 `command.list` 而不是做差分。转发的 `agent-preset/selected` 是它按会话粒度的对应物，由落账的选择提交点发出：重组空会话的 agent 只是重新挂接其 scope，不产生任何注册，因此该会话组成所决定的两份目录（`command.list`、`skill.list`）都会失效，却没有任何注册表变化来宣告它。

-`settings.*`、`credentials.*` 与 `llm.*` 领域是配置页协议。settings 领域服务于已注册可配置提供方所指向的 namespace（`ctx.llm.listConfigurableProviders()`），并额外服务于一份小型、显式的 allowlist——Web 偏好 `locale`、`permission`、`ui-conversation` 与 `ui-theme`，以及产品持有的 `ui-onboarding`；仅新增一项 Settings 注册，绝不会使其可被远程读取或写入。其他任何 namespace 都只会得到 `settings-not-exposed`——未注册的 namespace 得到的是同一个答复，因此没有调用方能靠逐个探测把注册表枚举出来。`settings.describe` 为每个已暴露 namespace 提供其序列化 schemastery schema、脱敏后的分层值（resolved/`base`/`user`——字段出现在 `user` 中即标记其被用户覆盖）、`secrets` 槽位列表、该分节的 `revision`，以及布尔型 `hasDocument` 能力标志。浏览器不会收到 Host 路径：无路径参数的 `settings.openDocument` 会请求提供方准备文档，再把由 Host 解析出的结果交给原生打开器，因此任何浏览器载荷都无法选择任意文件系统目标。`settings.update`/`settings.replace` 写入用户层；`settings.mutate` 则在已存分节上施加路径 op（`set`/`unset`），这是持有脱敏视图的客户端的删除路径——据此重建分节再整体替换，会删掉协议从未回传过的那些机密。任何写入都可携带 `expectedRevision`；陈旧的期望值会以 `settings-conflict` 连同两个 revision 作答，而不是覆盖先落地的那个写方，其余每种 seam 拒绝则折叠为 `settings-rejected`。secret 角色的值绝不在任何一层搭乘任何响应；secret 只沿一个方向跨越协议——在 `update`/`mutate` 载荷或 `credentials.set` 之内。`credentials.describe` 返回不含值的视图（`configured`/`source`/`writable`），`credentials.set`/`credentials.unset` 则把被遮蔽引用的拒绝映射为 `credential-rejected`。`llm.providers` 把可配置提供方目录与存活路由合并（休眠条目携带 `active: false`；未声明的存活路由追加在后，不带 settings 地址），`llm.models` 则是与会话无关的目录。`llm.discoverModels` 询问页面尚在起草的提供方端点：`settingsNs` 选出懂得读取该列表的适配器家族，端点、协议与密钥则来自表单而非存储。它什么都不写——回复是候选，只有随后的 `settings.mutate` 才决定路由服务什么——因此其 `apiKey` 是 secret 可以搭乘的第三个载荷（另两个是 `settings.update`/`mutate` 与 `credentials.set`），且绝不被存储或回显。host 从不存储或回传它；与另两者一样，它确实会搭乘客户端的出站信封，`subscribeEnvelopes()` 的观察者能看到——为该 tap 做脱敏是整个配置面的改动，而非本方法一家的事。每一种拒绝（无人服务的 namespace、没有可读列表的协议、不可达端点、被拒凭据）都折叠为 `model-discovery-failed`，其消息是适配器自己的文本，details 点名被询问的端点，绝不点名所提供的凭据。失效通知让每个面无需轮询即保持收敛。`settings/document-updated` 与 `credentials/updated` 搭乘原样转发事件帧（见下），因此解析值未变的原始设置变更同样能到达客户端，凭据失效通知也仍然只带引用名、绝不带值。`llm/adapters-updated` 与 `settings/document-updated` 一并原样转发；具体模型消费方直接订阅这两个 owner 事件，因为拓扑提交和设置文档都能独立改变其目录。浏览器载体把整个配置面（含读取与原生操作：`settings.describe`/`openDocument`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`）限制为仅接受来自回环地址的同源请求——即 `host.pickDirectory` 所在的特权集合。未装 settings 或凭据 provider 的组合会以指名缺失插件、包含解决建议的 `internal` 错误应答这些领域。
+`settings.*`、`credentials.*` 与 `llm.*` 领域是配置页协议。settings 领域服务于已注册可配置提供方所指向的 namespace（`ctx.llm.listConfigurableProviders()`），并额外服务于一份小型、显式的 allowlist——Web 偏好 `locale`、`permission`、`ui-conversation` 与 `ui-theme`、插件配置页所编辑的宿主平面插件分节 `agent-loop`、`bash` 与 `web-search-deepseek`，以及产品持有的 `ui-onboarding`；仅新增一项 Settings 注册，绝不会使其可被远程读取或写入。其他任何 namespace 都只会得到 `settings-not-exposed`——未注册的 namespace 得到的是同一个答复，因此没有调用方能靠逐个探测把注册表枚举出来。`settings.describe` 为每个已暴露 namespace 提供其序列化 schemastery schema、脱敏后的分层值（resolved/`base`/`user`——字段出现在 `user` 中即标记其被用户覆盖）、`secrets` 槽位列表、该分节的 `revision`，以及布尔型 `hasDocument` 能力标志。浏览器不会收到 Host 路径：无路径参数的 `settings.openDocument` 会请求提供方准备文档，再把由 Host 解析出的结果交给原生打开器，因此任何浏览器载荷都无法选择任意文件系统目标。`settings.update`/`settings.replace` 写入用户层；`settings.mutate` 则在已存分节上施加路径 op（`set`/`unset`），这是持有脱敏视图的客户端的删除路径——据此重建分节再整体替换，会删掉协议从未回传过的那些机密。任何写入都可携带 `expectedRevision`；陈旧的期望值会以 `settings-conflict` 连同两个 revision 作答，而不是覆盖先落地的那个写方，其余每种 seam 拒绝则折叠为 `settings-rejected`。secret 角色的值绝不在任何一层搭乘任何响应；secret 只沿一个方向跨越协议——在 `update`/`mutate` 载荷或 `credentials.set` 之内。`credentials.describe` 返回不含值的视图（`configured`/`source`/`writable`），`credentials.set`/`credentials.unset` 则把被遮蔽引用的拒绝映射为 `credential-rejected`。`llm.providers` 把可配置提供方目录与存活路由合并（休眠条目携带 `active: false`；未声明的存活路由追加在后，不带 settings 地址），`llm.models` 则是与会话无关的目录。`llm.discoverModels` 询问页面尚在起草的提供方端点：`settingsNs` 选出懂得读取该列表的适配器家族，端点、协议与密钥则来自表单而非存储。它什么都不写——回复是候选，只有随后的 `settings.mutate` 才决定路由服务什么——因此其 `apiKey` 是 secret 可以搭乘的第三个载荷（另两个是 `settings.update`/`mutate` 与 `credentials.set`），且绝不被存储或回显。host 从不存储或回传它；与另两者一样，它确实会搭乘客户端的出站信封，`subscribeEnvelopes()` 的观察者能看到——为该 tap 做脱敏是整个配置面的改动，而非本方法一家的事。每一种拒绝（无人服务的 namespace、没有可读列表的协议、不可达端点、被拒凭据）都折叠为 `model-discovery-failed`，其消息是适配器自己的文本，details 点名被询问的端点，绝不点名所提供的凭据。失效通知让每个面无需轮询即保持收敛。`settings/document-updated` 与 `credentials/updated` 搭乘原样转发事件帧（见下），因此解析值未变的原始设置变更同样能到达客户端，凭据失效通知也仍然只带引用名、绝不带值。`llm/adapters-updated` 与 `settings/document-updated` 一并原样转发；具体模型消费方直接订阅这两个 owner 事件，因为拓扑提交和设置文档都能独立改变其目录。浏览器载体把整个配置面（含读取与原生操作：`settings.describe`/`openDocument`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`）限制为仅接受来自回环地址的同源请求——即 `host.pickDirectory` 所在的特权集合。未装 settings 或凭据 provider 的组合会以指名缺失插件、包含解决建议的 `internal` 错误应答这些领域。

 ## 载体层（`/client` + 根路径）

--- a/packages/host/apiproxy/src/api-proxy.ts
+++ b/packages/host/apiproxy/src/api-proxy.ts
@@ -107,8 +107,19 @@ import { canOpenNativePath, openNativePath, openNativeTextFile } from './native-
 /** Page size when history is called without maxMessages. */
 const DEFAULT_MAX_MESSAGES = 50

-/** Non-model settings namespaces intentionally served to the Web client. */
-const WEB_SETTINGS_NAMESPACES = ['locale', 'permission', 'ui-conversation', 'ui-theme'] as const
+/**
+ * Non-model settings namespaces intentionally served to the Web client. The
+ * plugin-owned entries (`agent-loop`, `bash`, `web-search-deepseek`) are the
+ * host-plane sections the plugin configuration page edits; a namespace absent
+ * here answers `settings-not-exposed` even when its owner registered it, so
+ * adding a section to that page is a decision made here rather than by the
+ * registering plugin. Moving that declaration to `settings.register()`, so a
+ * plugin can expose its own configuration without a change in this package,
+ * is deferred work.
+ */
+const WEB_SETTINGS_NAMESPACES = [
+  'agent-loop', 'bash', 'locale', 'permission', 'ui-conversation', 'ui-theme', 'web-search-deepseek',
+] as const

 /** Provider work budget: at most 100 calls and 2,000 inspected hits. */
 const SESSION_SEARCH_PROVIDER_CALL_LIMIT = 100
--- a/packages/host/apiproxy/tests/api-proxy-config.spec.ts
+++ b/packages/host/apiproxy/tests/api-proxy-config.spec.ts
@@ -344,11 +344,21 @@ describe('settings domain', () => {
    ctx.settings.register(settingsNamespace('ui-conversation'), z.object({
      busyEnter: z.union(['queue', 'steer']).default('queue'),
    }))
+    ctx.settings.register(settingsNamespace('bash'), z.object({
+      timeoutMs: z.number().default(120_000),
+    }))
+    ctx.settings.register(settingsNamespace('agent-loop'), z.object({
+      maxParallelToolCalls: z.number().default(10),
+    }))
+    ctx.settings.register(settingsNamespace('web-search-deepseek'), z.object({
+      baseURL: z.string(),
+    }))
    const api = createApiProxy(ctx, DEFAULTS)

    const value = expectOk(await api.settings.describe(request({})))
    expect(value.namespaces.map(view => view.ns)).toEqual([
      'llm-deepseek', 'permission', 'ui-theme', 'locale', 'ui-conversation',
+      'bash', 'agent-loop', 'web-search-deepseek',
    ])
    const permission = expectOk(await api.settings.mutate(request({
      ns: 'permission',
@@ -370,6 +380,21 @@ describe('settings domain', () => {
      ops: [{ op: 'set', path: ['busyEnter'], value: 'steer' }],
    })))
    expect(conversation.value).toEqual({ busyEnter: 'steer' })
+    const bash = expectOk(await api.settings.mutate(request({
+      ns: 'bash',
+      ops: [{ op: 'set', path: ['timeoutMs'], value: 5_000 }],
+    })))
+    expect(bash.value).toEqual({ timeoutMs: 5_000 })
+    const agentLoop = expectOk(await api.settings.mutate(request({
+      ns: 'agent-loop',
+      ops: [{ op: 'set', path: ['maxParallelToolCalls'], value: 2 }],
+    })))
+    expect(agentLoop.value).toEqual({ maxParallelToolCalls: 2 })
+    const webSearch = expectOk(await api.settings.mutate(request({
+      ns: 'web-search-deepseek',
+      ops: [{ op: 'set', path: ['baseURL'], value: 'https://search.test/v1' }],
+    })))
+    expect(webSearch.value).toEqual({ baseURL: 'https://search.test/v1' })

    for (const response of [
      await api.settings.update(request({ ns: 'some-other-plugin', patch: { secretPath: '/etc/shadow' } })),
--- a/packages/web/web-search-deepseek/README.i18n.yaml
+++ b/packages/web/web-search-deepseek/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/web/web-search-deepseek/README.md
-README.md: 0ddd64827dde8a9f27937305fcb71d8c55e25ae6
-README.zh.md: 4e761aa6ef1a67ce17fbc1cabf595af7f24e15e6
+README.md: 25162a3e82a05bb17f31a69bc65f6552e42906ad
+README.zh.md: 21962bcd390f253f899000be7273a79485821018
--- a/packages/web/web-search-deepseek/README.md
+++ b/packages/web/web-search-deepseek/README.md
@@ -34,6 +34,8 @@ It reuses the `DEEPSEEK_API_KEY` credential reference (no new secret) but **not*
    baseURL: https://gateway.internal/anthropic/v1
 ```

+The entry above is the base layer of the `web-search-deepseek` Settings section: a user layer over it reaches the NEXT search, because the provider projects the section per call rather than capturing it at registration. The seam's provider selection therefore never flickers when an endpoint or model changes. `apiKey` carries `role('secret')`, so it never rides a `describe()` response in any layer — a configuration surface learns only whether the credentials domain holds a value for the reference `apiKeyEnv` names, never whether a layer carries a literal key.
+
 ## Mapping

 DeepSeek returns no provider-generated answer content this provider trusts as `content`, so `content` is omitted. `sources[]` comes from `web_search_result` items inside `web_search_tool_result` blocks: `url` ← `url`, `title` ← `title`, and `publishedAt` ← `page_age`. Snippets live separately as URL-keyed `cited_text` entries in a text block's `citations[]`; the provider joins them, leaving `snippet` absent when no excerpt exists.
--- a/packages/web/web-search-deepseek/README.zh.md
+++ b/packages/web/web-search-deepseek/README.zh.md
@@ -34,6 +34,8 @@ Exa 和 Perplexity 提供专用搜索端点，DeepSeek 则没有。该提供方
    baseURL: https://gateway.internal/anthropic/v1
 ```

+上面的条目是 `web-search-deepseek` Settings 段的 base 层：叠加其上的用户层会作用于**下一次**搜索，因为提供方是按次投影该段，而不是在注册时固化它。因此端点或模型变化时，seam 的提供方选择不会闪断。`apiKey` 带有 `role('secret')`，所以它在任何一层都不会出现在 `describe()` 响应中——配置表层只能知道 credentials 领域是否为 `apiKeyEnv` 所命名的引用持有值，而无从知道某一层是否带着字面密钥。
+
 ## 映射

 DeepSeek 不返回该提供方可作为 `content` 信任的提供方生成答案表层，因此省略 `content`。`sources[]` 来自 `web_search_result` 配置项，这些配置项位于 `web_search_tool_result` 块内：`url` ← `url`、`title` ← `title`、`publishedAt` ← `page_age`。`cited_text` 配置项按 URL 标识，单独位于文本块的 `citations[]` 中；提供方会将其作为 snippet 连接，没有摘录时省略 `snippet`。
--- a/packages/web/web-search-deepseek/package.json
+++ b/packages/web/web-search-deepseek/package.json
@@ -38,7 +38,8 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-session": "workspace:^",
    "@deepseek-ai/dsh-web": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  },
  "dependencies": {
    "@deepseek-ai/schemastery": "workspace:^"
@@ -51,6 +52,7 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@deepseek-ai/dsh-session": "workspace:^",
    "@deepseek-ai/dsh-web": "workspace:^",
-    "@deepseek-ai/cordis": "workspace:^"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/dsh-settings": "workspace:^"
  }
 }
--- a/packages/web/web-search-deepseek/src/index.ts
+++ b/packages/web/web-search-deepseek/src/index.ts
@@ -9,6 +9,7 @@ import type { Context } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
 import type {} from '@deepseek-ai/dsh-agent'
 import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import { installSettingsSection, settingsNamespace } from '@deepseek-ai/dsh-settings'
 import { environmentOf } from '@deepseek-ai/dsh-environment'
 import type {} from '@deepseek-ai/dsh-session'
 import type {} from '@deepseek-ai/dsh-web'
@@ -20,6 +21,7 @@ import {
  DEEPSEEK_DEFAULT_MAX_USES,
  DEEPSEEK_DEFAULT_MODEL,
 } from './provider.ts'
+import type { DeepSeekSearchProviderOptions } from './provider.ts'

 export {
  DeepSeekSearchProvider,
@@ -61,11 +63,14 @@ export interface Config {
 export const Config: z<Config> = z.object({
  apiKey: z.string().role('secret'),
  apiKeyEnv: z.string().role('credential-ref').default(DEFAULT_API_KEY_ENV),
+  // Declared here rather than only at the use site: a configuration surface
+  // renders the resolved section, so a default the schema does not carry reads
+  // there as no value at all.
  baseURL: z.string(),
-  model: z.string(),
-  apiVersion: z.string(),
-  maxTokens: z.number().step(1).min(1),
-  maxUses: z.number().step(1).min(1),
+  model: z.string().default(DEEPSEEK_DEFAULT_MODEL),
+  apiVersion: z.string().default(DEEPSEEK_DEFAULT_API_VERSION),
+  maxTokens: z.number().step(1).min(1).default(DEEPSEEK_DEFAULT_MAX_TOKENS),
+  maxUses: z.number().step(1).min(1).default(DEEPSEEK_DEFAULT_MAX_USES),
 })

 /**
@@ -76,15 +81,23 @@ export const Config: z<Config> = z.object({
 */
 const SEARCH_BASE_URL_ENV = 'DEEPSEEK_SEARCH_BASE_URL'

-/** Register the DeepSeek search provider with `ctx.web`. */
-export function apply(ctx: Context, config: Config): void {
-  const maxTokens = config.maxTokens ?? DEEPSEEK_DEFAULT_MAX_TOKENS
-  const maxUses = config.maxUses ?? DEEPSEEK_DEFAULT_MAX_USES
+/** Settings namespace carrying this provider's endpoint, model, and key reference. */
+export const WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE = settingsNamespace('web-search-deepseek')
+
+/**
+ * Project one resolved section into the options the provider serves its next
+ * search with. Environment fallbacks stay here rather than in the provider:
+ * every value it reads is already fully defaulted.
+ * @param ctx - plugin context supplying the credential and environment planes.
+ * @param config - the currently authoritative section.
+ * @returns options for one search.
+ */
+function resolveOptions(ctx: Context, config: Config): DeepSeekSearchProviderOptions {
  const apiKeyEnv = credentialRef(config.apiKeyEnv ?? DEFAULT_API_KEY_ENV)
  const literalApiKey = config.apiKey !== undefined && config.apiKey.length > 0
    ? config.apiKey
    : undefined
-  ctx.web.registerSearchProvider(new DeepSeekSearchProvider({
+  return {
    ...literalApiKey === undefined ? {} : { apiKey: literalApiKey },
    resolveApiKey: async () => {
      const credentials = ctx.get('credentials')
@@ -99,13 +112,27 @@ export function apply(ctx: Context, config: Config): void {
      ?? DEEPSEEK_DEFAULT_BASE_URL,
    model: config.model ?? DEEPSEEK_DEFAULT_MODEL,
    apiVersion: config.apiVersion ?? DEEPSEEK_DEFAULT_API_VERSION,
-    maxTokens,
-    maxUses,
+    maxTokens: config.maxTokens ?? DEEPSEEK_DEFAULT_MAX_TOKENS,
+    maxUses: config.maxUses ?? DEEPSEEK_DEFAULT_MAX_USES,
    recordRequest: (request) => {
      ctx.get('agents')?.currentInitiator()?.session.append(
        'web/deepseek-search-llm-request',
        request,
      )
    },
-  }))
+  }
+}
+
+/** Register the DeepSeek search provider with `ctx.web`. */
+export function apply(ctx: Context, config: Config): void {
+  let current: () => Config = () => config
+  installSettingsSection(ctx, WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE, Config, config, {
+    setSource: (source) => {
+      current = source
+    },
+    // The registration carries no resolved value: the provider projects the
+    // section per search, so a committed change needs no re-registration.
+    onChange: () => {},
+  })
+  ctx.web.registerSearchProvider(new DeepSeekSearchProvider(() => resolveOptions(ctx, current())))
 }
--- a/packages/web/web-search-deepseek/src/provider.ts
+++ b/packages/web/web-search-deepseek/src/provider.ts
@@ -177,31 +177,43 @@ export function mapAnthropicResponse(response: AnthropicResponse): WebSearchResu
 export class DeepSeekSearchProvider implements WebSearchProvider {
  readonly id = DEEPSEEK_PROVIDER_ID

-  constructor(private readonly options: DeepSeekSearchProviderOptions) {}
+  /**
+   * @param resolveOptions - the options for the NEXT operation, snapshotted
+   * once at each operation's entry so one search never mixes two sections. A
+   * thunk rather than a value because the plugin's settings section can change
+   * between searches, and re-registering the provider to carry a new endpoint
+   * would make the seam's selection observable to the user as a flicker.
+   */
+  constructor(private readonly resolveOptions: () => DeepSeekSearchProviderOptions) {}

  available(): boolean {
-    return ((this.options.apiKey?.length ?? 0) > 0 || this.options.resolveApiKey !== undefined)
-      && URL.canParse(this.options.baseURL)
-      && isPositiveInteger(this.options.maxTokens)
-      && isPositiveInteger(this.options.maxUses)
+    const options = this.resolveOptions()
+    return ((options.apiKey?.length ?? 0) > 0 || options.resolveApiKey !== undefined)
+      && URL.canParse(options.baseURL)
+      && isPositiveInteger(options.maxTokens)
+      && isPositiveInteger(options.maxUses)
  }

  async search(request: WebSearchRequest, signal?: AbortSignal): Promise<WebSearchResult> {
-    const apiKey = await this.apiKey(signal)
+    // One snapshot for the whole operation: credential resolution awaits, and a
+    // settings write landing inside that await must not send the key resolved
+    // from the old section to the endpoint named by the new one.
+    const options = this.resolveOptions()
+    const apiKey = await this.apiKey(options, signal)
    throwIfSearchAborted(signal)
-    const endpoint = `${this.options.baseURL}/messages`
+    const endpoint = `${options.baseURL}/messages`
    const body: DeepSeekSearchLlmRequest['body'] = {
-      model: this.options.model,
-      max_tokens: this.options.maxTokens,
+      model: options.model,
+      max_tokens: options.maxTokens,
      messages: [{
        role: 'user',
        content: [{ type: 'text', text: `Perform a web search for the query: ${request.query}` }],
      }],
-      tools: [{ type: 'web_search_20250305', name: 'web_search', max_uses: this.options.maxUses }],
+      tools: [{ type: 'web_search_20250305', name: 'web_search', max_uses: options.maxUses }],
    }
-    this.options.recordRequest?.({
+    options.recordRequest?.({
      endpoint,
-      apiVersion: this.options.apiVersion,
+      apiVersion: options.apiVersion,
      body,
    })
    throwIfSearchAborted(signal)
@@ -215,7 +227,7 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
          // may expect `Authorization: Bearer` — send both so either resolves.
          'x-api-key': apiKey,
          'authorization': `Bearer ${apiKey}`,
-          'anthropic-version': this.options.apiVersion,
+          'anthropic-version': options.apiVersion,
          'content-type': 'application/json',
          'accept': 'application/json',
          'user-agent': USER_AGENT,
@@ -257,13 +269,18 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
    }
  }

-  /** Resolve one operation's credential without retaining it on the provider. */
-  private async apiKey(signal?: AbortSignal): Promise<string> {
+  /**
+   * Resolve one operation's credential without retaining it on the provider.
+   * @param options - the caller's snapshot, so the key and the endpoint it is sent to come from one section.
+   * @param signal - abort signal for the surrounding search.
+   * @returns the resolved key.
+   */
+  private async apiKey(options: DeepSeekSearchProviderOptions, signal?: AbortSignal): Promise<string> {
    throwIfSearchAborted(signal)
-    if (this.options.apiKey !== undefined && this.options.apiKey.length > 0) return this.options.apiKey
+    if (options.apiKey !== undefined && options.apiKey.length > 0) return options.apiKey
    let resolved: string | undefined
    try {
-      resolved = await abortable(this.options.resolveApiKey?.() ?? Promise.resolve(undefined), signal)
+      resolved = await abortable(options.resolveApiKey?.() ?? Promise.resolve(undefined), signal)
    } catch (error: unknown) {
      if (signal?.aborted === true || isAbortError(error)) throw searchAborted(signal, error)
      throw new WebError(
@@ -273,7 +290,7 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
      )
    }
    if (resolved !== undefined && resolved.length > 0) return resolved
-    const ref = this.options.apiKeyEnv ?? 'DEEPSEEK_API_KEY'
+    const ref = options.apiKeyEnv ?? 'DEEPSEEK_API_KEY'
    throw new WebError(
      `DeepSeek search has no API key for "${ref}"; store it through the credentials service`
      + ' (the web Models page writes it), export it in the launching environment, or set a literal'
--- a/packages/web/web-search-deepseek/tests/deepseek.e2e.ts
+++ b/packages/web/web-search-deepseek/tests/deepseek.e2e.ts
@@ -8,6 +8,12 @@ import {
  DEEPSEEK_DEFAULT_MODEL,
 } from '@deepseek-ai/dsh-web-search-deepseek'

+/** Construct the provider over a fixed options value; production passes a live thunk. */
+import type { DeepSeekSearchProviderOptions } from '@deepseek-ai/dsh-web-search-deepseek'
+
+const searchProvider = (options: DeepSeekSearchProviderOptions): DeepSeekSearchProvider =>
+  new DeepSeekSearchProvider(() => options)
+
 /**
 * Disabled real-API probe for the DeepSeek search provider. The live endpoint
 * can complete without structured source blocks, so this is not a reliable
@@ -18,7 +24,7 @@ const maybe = apiKey !== undefined && apiKey.length > 0 ? describe : describe.sk

 maybe('DeepSeekSearchProvider real API', () => {
  it.skip('returns citeable sources for a live query via native web_search', async () => {
-    const provider = new DeepSeekSearchProvider({
+    const provider = searchProvider({
      apiKey: apiKey!,
      baseURL: process.env.DEEPSEEK_SEARCH_BASE_URL ?? DEEPSEEK_DEFAULT_BASE_URL,
      model: process.env.DEEPSEEK_SEARCH_MODEL ?? DEEPSEEK_DEFAULT_MODEL,
--- a/packages/web/web-search-deepseek/tests/deepseek.spec.ts
+++ b/packages/web/web-search-deepseek/tests/deepseek.spec.ts
@@ -15,6 +15,12 @@ import * as deepseekPlugin from '@deepseek-ai/dsh-web-search-deepseek'
 import { citationSnippets, mapAnthropicResponse } from '../src/provider.ts'
 import type { AnthropicResponse } from '@deepseek-ai/dsh-web-search-deepseek/src/types.ts'

+/** Construct the provider over a fixed options value; production passes a live thunk. */
+import type { DeepSeekSearchProviderOptions } from '@deepseek-ai/dsh-web-search-deepseek'
+
+const searchProvider = (options: DeepSeekSearchProviderOptions): DeepSeekSearchProvider =>
+  new DeepSeekSearchProvider(() => options)
+
 const options = {
  apiKey: 'ds-key',
  baseURL: 'https://api.deepseek.test/anthropic/v1',
@@ -142,21 +148,21 @@ describe('mapAnthropicResponse', () => {

 describe('DeepSeekSearchProvider availability', () => {
  it('is unavailable without a key', () => {
-    expect(new DeepSeekSearchProvider({ ...options, apiKey: '' }).available()).toBe(false)
+    expect(searchProvider({ ...options, apiKey: '' }).available()).toBe(false)
  })

  it('is available with a key', () => {
-    expect(new DeepSeekSearchProvider(options).available()).toBe(true)
+    expect(searchProvider(options).available()).toBe(true)
  })

  it('is misconfigured when the base URL is unparseable', () => {
-    expect(new DeepSeekSearchProvider({ ...options, baseURL: 'not a url' }).available()).toBe(false)
+    expect(searchProvider({ ...options, baseURL: 'not a url' }).available()).toBe(false)
  })

  it('is misconfigured when request limits are not positive integers', () => {
-    expect(new DeepSeekSearchProvider({ ...options, maxTokens: 0 }).available()).toBe(false)
-    expect(new DeepSeekSearchProvider({ ...options, maxUses: 0 }).available()).toBe(false)
-    expect(new DeepSeekSearchProvider({ ...options, maxUses: 1.5 }).available()).toBe(false)
+    expect(searchProvider({ ...options, maxTokens: 0 }).available()).toBe(false)
+    expect(searchProvider({ ...options, maxUses: 0 }).available()).toBe(false)
+    expect(searchProvider({ ...options, maxUses: 1.5 }).available()).toBe(false)
  })
 })

@@ -165,7 +171,7 @@ describe('DeepSeekSearchProvider request mapping', () => {
    const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
    const recordRequest = vi.fn()
    vi.stubGlobal('fetch', fetchMock)
-    await new DeepSeekSearchProvider({ ...options, recordRequest }).search({ query: 'hello' })
+    await searchProvider({ ...options, recordRequest }).search({ query: 'hello' })
    const [url, init] = fetchMock.mock.calls[0] as unknown as [string, RequestInit]
    expect(url).toBe('https://api.deepseek.test/anthropic/v1/messages')
    expect(init).toMatchObject({ method: 'POST', redirect: 'error' })
@@ -193,12 +199,40 @@ describe('DeepSeekSearchProvider request mapping', () => {
    const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
    vi.stubGlobal('fetch', fetchMock)
    const controller = new AbortController()
-    await new DeepSeekSearchProvider(options).search({ query: 'q' }, controller.signal)
+    await searchProvider(options).search({ query: 'q' }, controller.signal)
    const [, init] = fetchMock.mock.calls[0] as unknown as [string, RequestInit]
    expect(init.signal).toBe(controller.signal)
  })
 })

+describe('DeepSeekSearchProvider settings changes mid-search', () => {
+  it('serves one search from one section even when settings land during credential resolution', async () => {
+    // The section the search starts on, and the one a user commits while the
+    // credential is still resolving.
+    const before = { ...options, apiKey: '', baseURL: 'https://before.test/v1', model: 'model-before', maxUses: 2 }
+    const after = { ...options, apiKey: '', baseURL: 'https://after.test/v1', model: 'model-after', maxUses: 9 }
+    let current = before
+    let commitSettings = () => {}
+    const resolveApiKey = () => new Promise<string>((resolve) => {
+      commitSettings = () => { current = after; resolve('key-from-before') }
+    })
+    const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
+    vi.stubGlobal('fetch', fetchMock)
+
+    const provider = new DeepSeekSearchProvider(() => ({ ...current, resolveApiKey }))
+    const search = provider.search({ query: 'q' })
+    await vi.waitFor(() => { expect(typeof commitSettings).toBe('function') })
+    commitSettings()
+    await search
+
+    const [endpoint, init] = fetchMock.mock.calls[0] as unknown as [string, { headers: Record<string, string>; body: string }]
+    // The key resolved from `before` must never reach `after`'s origin.
+    expect(endpoint).toBe('https://before.test/v1/messages')
+    expect(init.headers['x-api-key']).toBe('key-from-before')
+    expect(JSON.parse(init.body)).toMatchObject({ model: 'model-before' })
+  })
+})
+
 describe('DeepSeekSearchProvider error handling', () => {
  it('does not start credential resolution or dispatch for a pre-aborted call', async () => {
    const resolveApiKey = vi.fn(async () => 'late-key')
@@ -207,7 +241,7 @@ describe('DeepSeekSearchProvider error handling', () => {
    vi.stubGlobal('fetch', fetchMock)
    const controller = new AbortController()
    controller.abort(new Error('caller stopped'))
-    await expect(new DeepSeekSearchProvider({
+    await expect(searchProvider({
      ...options,
      apiKey: '',
      resolveApiKey,
@@ -225,7 +259,7 @@ describe('DeepSeekSearchProvider error handling', () => {
    const fetchMock = vi.fn()
    vi.stubGlobal('fetch', fetchMock)
    const controller = new AbortController()
-    const search = new DeepSeekSearchProvider({
+    const search = searchProvider({
      ...options,
      apiKey: '',
      resolveApiKey,
@@ -242,7 +276,7 @@ describe('DeepSeekSearchProvider error handling', () => {
    const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
    vi.stubGlobal('fetch', fetchMock)
    const controller = new AbortController()
-    await expect(new DeepSeekSearchProvider({
+    await expect(searchProvider({
      ...options,
      apiKey: '',
      resolveApiKey: async () => 'resolved-key',
@@ -253,7 +287,7 @@ describe('DeepSeekSearchProvider error handling', () => {

  it('maps a credential resolver rejection under an active signal to WEB_PROVIDER_ERROR', async () => {
    const controller = new AbortController()
-    await expect(new DeepSeekSearchProvider({
+    await expect(searchProvider({
      ...options,
      apiKey: '',
      resolveApiKey: () => Promise.reject(new Error('credential backend failed')),
@@ -265,7 +299,7 @@ describe('DeepSeekSearchProvider error handling', () => {
  })

  it('uses the default credential reference when no resolver is configured', async () => {
-    await expect(new DeepSeekSearchProvider({ ...options, apiKey: '' }).search({ query: 'q' }))
+    await expect(searchProvider({ ...options, apiKey: '' }).search({ query: 'q' }))
      .rejects.toThrow('DeepSeek search has no API key for "DEEPSEEK_API_KEY"')
  })

@@ -273,7 +307,7 @@ describe('DeepSeekSearchProvider error handling', () => {
    const controller = new AbortController()
    const fetchMock = vi.fn()
    vi.stubGlobal('fetch', fetchMock)
-    await expect(new DeepSeekSearchProvider({
+    await expect(searchProvider({
      ...options,
      apiKey: '',
      resolveApiKey: () => {
@@ -287,31 +321,31 @@ describe('DeepSeekSearchProvider error handling', () => {

  it('maps an HTTP error to WEB_PROVIDER_ERROR with the provider message', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({ error: { message: 'rate limited' } }, { status: 429 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_ERROR', message: 'rate limited' }))
  })

  it('handles a string-form error body', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({ error: 'bad request' }, { status: 400 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ message: 'bad request' }))
  })

  it('keeps a status-line message when the error body is not JSON', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => new Response('upstream error', { status: 503 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ message: 'DeepSeek API error (HTTP 503)' }))
  })

  it('keeps the status-line message when the JSON error body carries no detail', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({}, { status: 500 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ message: 'DeepSeek API error (HTTP 500)' }))
  })

  it('maps an abort to WEB_ABORTED', async () => {
    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new DOMException('aborted', 'AbortError'))))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
  })

@@ -321,46 +355,46 @@ describe('DeepSeekSearchProvider error handling', () => {
      await new Promise<Response>((_resolve, reject) => {
        init?.signal?.addEventListener('abort', () => { reject(new Error('custom abort reason')) }, { once: true })
      })))
-    const search = new DeepSeekSearchProvider(options).search({ query: 'q' }, controller.signal)
+    const search = searchProvider(options).search({ query: 'q' }, controller.signal)
    controller.abort(new Error('timeout reason'))
    await expect(search).rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
  })

  it('maps an unparseable success body to WEB_PROVIDER_ERROR', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => new Response('not json', { status: 200 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_ERROR' }))
  })

  it('maps a well-formed body of the wrong shape to WEB_PROVIDER_ERROR, not a raw TypeError', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({ content: {} }, { status: 200 })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_ERROR' }))
  })

  it('surfaces an abort during success-body parse as WEB_ABORTED', async () => {
    const body = { json: () => Promise.reject(new DOMException('aborted', 'AbortError')), ok: true, status: 200 }
    vi.stubGlobal('fetch', vi.fn(async () => body as unknown as Response))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
  })

  it('surfaces an abort during error-body parse as WEB_ABORTED', async () => {
    const body = { json: () => Promise.reject(new DOMException('aborted', 'AbortError')), ok: false, status: 500 }
    vi.stubGlobal('fetch', vi.fn(async () => body as unknown as Response))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
  })

  it('maps a network failure to WEB_PROVIDER_ERROR', async () => {
    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new TypeError('connection refused'))))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_ERROR' }))
  })

  it('strict mode flows through search(): a prose-only response throws WEB_PROVIDER_ERROR', async () => {
    vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({ content: [{ type: 'text', text: 'no search happened' }] })))
-    await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
+    await expect(searchProvider(options).search({ query: 'q' }))
      .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_ERROR' }))
  })
 })
--- a/packages/web/web-search-deepseek/tests/redirect.spec.ts
+++ b/packages/web/web-search-deepseek/tests/redirect.spec.ts
@@ -8,6 +8,12 @@ import { createServer, type IncomingMessage, type Server } from 'node:http'
 import type { AddressInfo } from 'node:net'
 import { DeepSeekSearchProvider } from '@deepseek-ai/dsh-web-search-deepseek'

+/** Construct the provider over a fixed options value; production passes a live thunk. */
+import type { DeepSeekSearchProviderOptions } from '@deepseek-ai/dsh-web-search-deepseek'
+
+const searchProvider = (options: DeepSeekSearchProviderOptions): DeepSeekSearchProvider =>
+  new DeepSeekSearchProvider(() => options)
+
 const TEST_API_KEY = 'redirect-test-key'
 const TEST_QUERY = 'private redirect query'
 const targetRequests: ReceivedRequest[] = []
@@ -46,7 +52,7 @@ afterAll(async () => {
 describe('DeepSeekSearchProvider redirect policy', () => {
  it.each([301, 302, 303, 307, 308])('rejects HTTP %i before contacting Location', async (status) => {
    targetRequests.length = 0
-    const provider = new DeepSeekSearchProvider({
+    const provider = searchProvider({
      apiKey: TEST_API_KEY,
      baseURL: `${redirectOrigin}/${status}`,
      model: 'deepseek-chat',
--- a/packages/web/web-search-deepseek/tests/settings.spec.ts
+++ b/packages/web/web-search-deepseek/tests/settings.spec.ts
@@ -0,0 +1,124 @@
+/** The `web-search-deepseek` settings section layered over the composition entry. */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import type { Fiber } from '@deepseek-ai/cordis'
+import { Settings } from '@deepseek-ai/dsh-settings'
+import type { SettingsNamespace } from '@deepseek-ai/dsh-settings'
+import WebService from '@deepseek-ai/dsh-web'
+import * as deepseekPlugin from '@deepseek-ai/dsh-web-search-deepseek'
+import { WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE } from '@deepseek-ai/dsh-web-search-deepseek'
+
+/** The smallest real provider: one in-memory document, always writable. */
+class MemorySettings extends Settings {
+  doc: Record<string, unknown> = {}
+
+  get writable(): boolean {
+    return true
+  }
+
+  protected load(): Promise<Record<string, unknown>> {
+    return Promise.resolve(structuredClone(this.doc))
+  }
+
+  protected persist(ns: SettingsNamespace, section: Record<string, unknown>): Promise<void> {
+    this.doc = { ...this.doc, [ns]: structuredClone(section) }
+    return Promise.resolve()
+  }
+}
+
+function jsonResponse(body: unknown): Response {
+  return new Response(JSON.stringify(body), {
+    status: 200,
+    headers: { 'content-type': 'application/json' },
+  })
+}
+
+/** The smallest Anthropic-shaped answer the provider accepts — enough to observe the request. */
+const ONE_RESULT = {
+  content: [
+    { type: 'text', text: 'ok' },
+    {
+      type: 'web_search_tool_result',
+      content: [{ type: 'web_search_result', url: 'https://a.test', title: 'A' }],
+    },
+  ],
+}
+
+async function boot(): Promise<{ ctx: Context; settingsFiber: Fiber; pluginFiber: Fiber }> {
+  const ctx = new Context()
+  await ctx.plugin(WebService, {})
+  const settingsFiber = ctx.plugin(MemorySettings)
+  await settingsFiber.await()
+  const pluginFiber = ctx.plugin(deepseekPlugin, { apiKey: 'ds-key', baseURL: 'https://search.entry.test/v1' })
+  await pluginFiber.await()
+  return { ctx, settingsFiber, pluginFiber }
+}
+
+afterEach(() => {
+  vi.restoreAllMocks()
+})
+
+/**
+ * Run one search and answer the endpoint it reached. A fresh `Response` per
+ * call because a body can only be read once, and the call history is cleared
+ * because repeated `spyOn` returns the same spy.
+ * @param ctx - context whose `ctx.web` serves the search.
+ * @returns the URL the provider fetched.
+ */
+async function searchOnce(ctx: Context): Promise<string> {
+  const fetchSpy = vi.spyOn(globalThis, 'fetch')
+    .mockImplementation(() => Promise.resolve(jsonResponse(ONE_RESULT)))
+  fetchSpy.mockClear()
+  await ctx.web.search({ query: 'anything' })
+  return String((fetchSpy.mock.calls.at(-1)?.[0] as URL | string | undefined) ?? '')
+}
+
+describe('web-search-deepseek settings section', () => {
+  it('serves a stored endpoint to the next search without re-registering the provider', async () => {
+    const bench = await boot()
+    expect(await searchOnce(bench.ctx)).toContain('https://search.entry.test/v1')
+
+    await bench.ctx.settings.update(WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE, {
+      baseURL: 'https://search.stored.test/v1',
+    })
+
+    expect(await searchOnce(bench.ctx)).toContain('https://search.stored.test/v1')
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('keeps the literal key out of every described layer', async () => {
+    const bench = await boot()
+    await bench.ctx.settings.update(WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE, { apiKey: 'ds-stored-secret' })
+
+    const [descriptor] = bench.ctx.settings.describe({ redactSecrets: true })
+      .filter(row => String(row.ns) === 'web-search-deepseek')
+
+    expect(JSON.stringify(descriptor)).not.toContain('ds-stored-secret')
+    expect(descriptor?.secrets).toEqual([{ path: ['apiKey'], set: true }])
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('falls back to the composition entry when the settings provider detaches', async () => {
+    const bench = await boot()
+    await bench.ctx.settings.update(WEB_SEARCH_DEEPSEEK_SETTINGS_NAMESPACE, {
+      baseURL: 'https://search.stored.test/v1',
+    })
+    expect(await searchOnce(bench.ctx)).toContain('https://search.stored.test/v1')
+
+    await bench.settingsFiber.dispose()
+
+    expect(await searchOnce(bench.ctx)).toContain('https://search.entry.test/v1')
+    await bench.ctx.fiber.dispose()
+  })
+
+  it('releases the namespace when the plugin unloads', async () => {
+    const bench = await boot()
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).toContain('web-search-deepseek')
+
+    await bench.pluginFiber.dispose()
+
+    expect(bench.ctx.settings.describe().map(row => String(row.ns))).not.toContain('web-search-deepseek')
+    await bench.ctx.fiber.dispose()
+  })
+})
--- a/packages/web/web-search-deepseek/tsconfig.json
+++ b/packages/web/web-search-deepseek/tsconfig.json
@@ -32,6 +32,9 @@
    {
      "path": "../../credentials/credentials"
    },
+    {
+      "path": "../../settings/settings"
+    },
    {
      "path": "../../support/invariants"
    }