Merge commit '8b4b0bb75463e0150cfe5d042d9833e56c4d221c' into codex/product-subagent-failure-facts-codex

# Conflicts:
#	packages/subagent/subagent-codex/README.i18n.yaml
#	packages/subagent/subagent-codex/README.md
#	packages/subagent/subagent-codex/README.zh.md
#	packages/subagent/subagent-codex/tests/real-product.spec.ts
#	packages/subagent/subagent-codex/tests/subagent-codex.spec.ts

.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md
-2026-07-30-client-locale-full-rollout.md: c6c5a8f2faffd3e03462eaad159ae94c53c735ce
-2026-07-30-client-locale-full-rollout.zh.md: 8d6220784104944f5d07b533e4f107ceffdfcfea
+2026-07-30-client-locale-full-rollout.md: 6701aefa451786d3ca6ac27d7214824a6d903bab
+2026-07-30-client-locale-full-rollout.zh.md: 0c05ec9699700d88d786bc661f7013f2ed09ebb2

.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md

@@ -42,4 +42,4 @@ The "apply layer subscribes to `locale/change` and re-registers for fresh labels
 - A language switch refreshes the whole UI instantly with zero re-registration; adopting a new package is three steps (dictionary + declare-merge + `locale: NS`), no hand-written glue.
 - Cost: list-label consumers must know `resolveSlotLabel` (a raw `options.label` read can now hold a function); the `SlotLabel` type catches most misuse statically.
 - ui-primitives' Chinese defaults still render Chinese under the English locale **until a consumer passes labels** — the unmigrated JsonTree consumer (ui-trajectory) showing its English defaults happens to match that package's all-English status quo.
-- Pinning e2e to English means the zh default is covered mainly by package-level component specs and the settings language-switch scenario; browser e2e no longer asserts zh copy.
+- Pinning e2e to English means the zh copy surface is covered mainly by package-level component specs and the settings language-switch scenario; browser e2e no longer asserts zh copy. The opening/fallback locale (a browser naming no shipped language, or a non-browser run) is `en`, not zh — see [browser-derived initial locale](../feature/2026-07-31-browser-derived-initial-locale.md).

.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.zh.md

@@ -42,4 +42,4 @@ typed locale 标准席位（`locale:` 注册声明 → 框架注入强类型 `t`
 - 语言切换全 UI 即时刷新且零重注册；新包接入 = 字典 + declare-merge + `locale: NS` 三步，无手写胶水。
 - 代价：list label 的消费方必须知道 `resolveSlotLabel`（裸读 `options.label` 现在可能拿到函数）；类型上 `SlotLabel` 已挡住多数误用。
 - ui-primitives 的中文默认值在英文语言下依旧是中文，**直到消费方传入 labels**——未迁移的 JsonTree 消费方（ui-trajectory）显示其英文默认值，恰好符合其整包英文现状。
-- e2e 英文钉死意味着 zh 默认态主要靠包级组件测试与 settings 语言切换用例覆盖，浏览器 e2e 不再验证 zh 文案。
+- e2e 英文钉死意味着 zh 文案面主要靠包级组件测试与 settings 语言切换用例覆盖，浏览器 e2e 不再验证 zh 文案。开场/回落 locale（声明了本应用都不支持语言的浏览器，或非浏览器运行）是 `en` 而非 `zh`，见 [browser-derived initial locale](../feature/2026-07-31-browser-derived-initial-locale.md)。

.agents/notes/implemented/architecture/2026-08-10-product-subagent-providers-in-shared-host.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-08-10-product-subagent-providers-in-shared-host.md
-2026-08-10-product-subagent-providers-in-shared-host.md: 452ff1cca7e4e5f91f8c35092761ebe83f3ff174
-2026-08-10-product-subagent-providers-in-shared-host.zh.md: a62bf6faa3c9bba5326da1de20ecbc2946c02bcc
+2026-08-10-product-subagent-providers-in-shared-host.md: 8bc08ddb57f07b76d3f90ce7c375e79c666ce86d
+2026-08-10-product-subagent-providers-in-shared-host.zh.md: f3d2053c78f52deda5130eee908e7c2eff98b89a

.agents/notes/implemented/architecture/2026-08-10-product-subagent-providers-in-shared-host.md

@@ -6,36 +6,36 @@ English | [中文](2026-08-10-product-subagent-providers-in-shared-host.zh.md)
 
 ## Problem
 
-The [Codex and Claude Code provider contracts](../feature/2026-08-04-claude-code-and-codex-subagent-backends.md) were first shipped as independently installable packages that a deployment loaded beside the common subagent tool. Agent Presets later became the ordinary owner of one agent's model-visible tools, but a preset cannot safely own these product providers: `ctx.subagents` is a process registry, provider names are unique, and host consumers resolve the same registry across sessions. Requiring a person to edit both a Profile and a Preset would also make a generic preset row incomplete by itself.
+The [Codex and Claude Code provider contracts](../feature/2026-08-04-claude-code-and-codex-subagent-backends.md) were first shipped as independently installable packages that a deployment loaded beside the common subagent tool. Agent Presets later became the ordinary owner of one agent's model-visible tools, but a preset cannot safely own these product providers: `ctx.subagents` is a process registry, provider names are unique within the Host, and host consumers resolve the same registry across sessions. Repeated preset composition would therefore contend for the same configured names. Requiring a person to edit both a Profile and a Preset would also make a generic preset row incomplete by itself.
 
 The placement decision must preserve two independent facts. Loading a provider must not start or authenticate a product, while enabling a tool must remain per preset so two sessions can expose different products. A global product switch, a provider instance per agent, or pre-enumerated combination presets would each create a second owner for one of those facts.
 
 ## Decision
 
-Product providers remain process-scoped host-plane registrations. The [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md) supersedes only this note's former base-bundle installation choice: production `dsh-base` neither depends on nor mounts them. A Profile that opts in installs the selected provider package and mounts it once on the host plane. Loading either plugin only registers a dormant backend; the corresponding Codex or Claude process starts on the first actual delegation call. Agent Presets independently contribute ordinary `dsh-tool-subagent` rows for `subagent_codex` and `subagent_claude_code`, so a preset can expose neither tool, either one, or both without changing the provider registry.
+Product providers remain process-scoped host-plane registrations. The [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md) supersedes only this note's former base-bundle installation choice: production `dsh-base` neither depends on nor mounts them. A Profile that opts in installs the selected provider package and mounts the required instances on the host plane. The [named-instance decision](../feature/2026-08-18-product-subagent-named-instances.md) owns each row's registry identity: both products accept multiple unique `providerName` values while preserving `codex` and `claude-code` as their defaults. Loading either plugin only registers a dormant backend; the corresponding Codex or Claude process starts on the first actual delegation call. Agent Presets independently contribute ordinary `dsh-tool-subagent` rows whose `provider` and `toolName` values expose exactly the configured instances needed by one agent without changing the Host registry.
 
 This note continues to own why a mounted product provider belongs on the host plane while its model-facing tool belongs to an Agent Preset. The production-install exclusion decision owns which Profiles install those optional packages. The provider-contract note continues to own each product protocol, result mapping, cancellation, process-tree lifecycle, and evidence tiers. The [Agent Preset architecture](2026-08-03-per-session-agent-presets.md) continues to own the Host/Agent split, preset authoring, and the rule that edits affect only newly composed sessions.
 
-The providers use products already selected by the host environment. Codex starts `codex` from `PATH`; Claude Code resolves `claude` through the shared subprocess execution world and passes the exact path to the official SDK. Profile loading does not install a product, create product state, probe a version, or test authentication. It may supply each mounted Provider's deployment configuration, including the product-specific `permissionMode` values owned by the [non-interactive permissions decision](../feature/2026-08-15-product-subagent-noninteractive-permissions.md), without moving those choices into an Agent Preset or model-facing tool. Missing commands and product failures remain local to the attempted delegation.
+The providers use products already selected by the host environment. Codex starts `codex` from `PATH`; Claude Code resolves `claude` through the shared subprocess execution world and passes the exact path to the official SDK. Profile loading does not install a product, create product state, probe a version, or test authentication. It may supply each mounted Provider instance's deployment configuration, including the product-specific `permissionMode` values owned by the [non-interactive permissions decision](../feature/2026-08-15-product-subagent-noninteractive-permissions.md), without moving those choices into an Agent Preset or model-facing tool. Missing commands and product failures remain local to the attempted delegation.
 
 Only a Profile that selects the Claude Code provider carries the Claude Agent SDK's optional platform CLI payload. Production still resolves the host `claude`; the SDK payload remains provider-package installation cost rather than the production executable.
 
 ## Verification
 
-The base bundle test proves production `dsh-base` contains neither product provider dependency nor provider row. The Web composition explicitly mounts both optional providers and covers none, Codex-only, Claude-only, and both tool sets, including generation isolation after an authored preset changes. Package-owned Loader compositions prove the Codex-only and dual-provider opt-in paths register the selected providers without starting a product process. Keyless ACP snapshots pin the model-visible tool schemas for one and both products, while provider tests separately prove native executable resolution, failure, cancellation, and process-tree quiescence.
+The base bundle test proves production `dsh-base` contains neither product provider dependency nor provider row. The Web composition explicitly mounts both optional providers and covers none, Codex-only, Claude-only, and both tool sets, including generation isolation after an authored preset changes. Package-owned Loader compositions prove two named instances of each product register without starting a product process. Keyless ACP snapshots pin the Codex two-tool roster and the final four-tool combination, while provider tests separately prove native executable resolution, configuration isolation, failure, cancellation, and process-tree quiescence.
 
 ## Alternatives considered
 
-**Keep product providers opt-in at the Profile layer.** This preserves a smaller default dependency closure but requires the user to edit both a Profile and a Preset. The production-install exclusion decision accepts that installation trade-off; this note retains the requirement that any selected provider is mounted once on the host plane rather than inside the preset.
+**Keep product providers opt-in at the Profile layer.** This preserves a smaller default dependency closure but requires the user to edit both a Profile and a Preset. The production-install exclusion decision accepts that installation trade-off; this note retains the requirement that selected provider instances are mounted on the host plane rather than inside the preset.
 
 **Store global or per-Profile product enable switches.** A process switch competes with the Preset as owner of model-visible tools and cannot express two sessions using different combinations. Availability and authentication are deployment facts, not another persisted product state.
 
-**Mount a provider inside every Agent Preset.** Provider names belong to a process registry, so the second session would collide with the first. Host consumers also need the registry independently of any one agent's lifetime.
+**Mount providers inside every Agent Preset.** Provider names belong to a process registry, so repeated session composition would collide on the same configured names. Host consumers also need the registry independently of any one agent's lifetime.
 
 **Ship four product-combination presets.** Four identities duplicate complete compositions to represent two independent tool rows. Ordinary rows already express the full matrix without adding roster or maintenance state.
 
 ## Consequences
 
-A user installs each selected product provider in a Profile and exposes its tool through the same Agent Preset authoring path as other plugins. Each new session receives exactly the tools its chosen preset contributes. Profiles that do not select a product provider carry no corresponding package or module-loading footprint; loading a selected provider still starts no product process, login, model call, or product home.
+A user installs each selected product provider in a Profile, mounts the required named instances, and exposes their tools through the same Agent Preset authoring path as other plugins. Each new session receives exactly the tools its chosen preset contributes. Profiles that do not select a product provider carry no corresponding package or module-loading footprint; loading selected instances still starts no product process, login, model call, or product home.
 
 The Host registry remains the single provider authority and each Preset remains the single model-tool authority. The trade-off is a two-layer opt-in: the Profile owns installation and host-plane registration, while the Preset owns per-agent exposure. Selecting the Claude provider also accepts its current SDK optional-payload installation cost.

.agents/notes/implemented/architecture/2026-08-10-product-subagent-providers-in-shared-host.zh.md

@@ -6,36 +6,36 @@ Status: implemented
 
 ## 问题
 
-[Codex 与 Claude Code 提供方约定](../feature/2026-08-04-claude-code-and-codex-subagent-backends.md)最初以可独立安装的包交付，由部署环境在通用 subagent 工具旁加载。Agent Preset 后来成为单个 agent（智能体）的模型可见工具的常规责任方，但 preset 不能安全地拥有这些产品提供方：`ctx.subagents` 是进程级注册表，提供方名称唯一，而宿主消费方会跨会话解析同一个注册表。如果要求用户同时编辑 Profile 和 Preset，也会使通用 preset 行本身不完整。
+[Codex 与 Claude Code 提供方约定](../feature/2026-08-04-claude-code-and-codex-subagent-backends.md)最初以可独立安装的包交付，由部署环境在通用 subagent 工具旁加载。Agent Preset 后来成为单个 agent（智能体）的模型可见工具的常规责任方，但 preset 不能安全地拥有这些产品提供方：`ctx.subagents` 是进程级注册表，提供方名称在 Host 内唯一，而宿主消费方会跨会话解析同一个注册表。因此，重复组装 preset 会争用同一组已配置名称。如果要求用户同时编辑 Profile 和 Preset，也会使通用 preset 配置项本身不完整。
 
 归属决策必须同时保留两个彼此独立的事实：加载提供方不得启动产品，也不得对产品执行身份验证；而工具是否启用仍须按 preset 决定，这样两个会话才能暴露不同的产品。全局产品开关、按 agent 创建提供方实例或预先枚举的组合 preset，都会为其中一个事实另设第二责任方。
 
 ## 决策
 
-产品提供方仍是进程级的 host plane（宿主平面）注册。[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)只取代本说明原先由 base bundle 安装提供方的选择：生产 `dsh-base` 既不依赖也不挂载它们。选择产品集成的 Profile 会安装目标提供方包，并在 host plane 挂载一次。加载任一插件只会注册一个休眠后端；对应的 Codex 或 Claude 进程直到第一次实际委派调用时才启动。Agent Preset 分别通过普通的 `dsh-tool-subagent` 行贡献 `subagent_codex` 与 `subagent_claude_code`，因此一个 preset 可以不暴露任何工具、只暴露其中一个或同时暴露两者，而无需更改提供方注册表。
+产品提供方仍是进程级的 host plane（宿主平面）注册。[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)只取代本说明原先由 base bundle 安装提供方的选择：生产 `dsh-base` 既不依赖也不挂载它们。选择产品集成的 Profile 会安装目标提供方包，并在 host plane 挂载所需实例。[命名实例决策](../feature/2026-08-18-product-subagent-named-instances.md)负责每个配置项的注册身份：两个产品都接受多个唯一的 `providerName`，同时保留 `codex` 与 `claude-code` 作为默认值。加载任一插件只会注册一个休眠后端；对应的 Codex 或 Claude 进程直到第一次实际委派调用时才启动。Agent Preset 通过普通 `dsh-tool-subagent` 配置项的 `provider` 与 `toolName` 准确公开单个 agent 所需的已配置实例，而无需更改 Host 注册表。
 
 本说明继续负责解释为什么已经挂载的产品提供方属于 host plane，而面向模型的工具属于 Agent Preset。生产安装排除决策负责哪些 Profile 安装这些可选包。提供方约定说明继续负责每个产品的协议、结果映射、取消、进程树生命周期与证据层级。[Agent Preset 架构](2026-08-03-per-session-agent-presets.md)仍负责宿主与 agent 的划分、preset 创作，以及改动只影响新组装会话的规则。
 
-这些提供方使用宿主环境已经选定的产品。Codex 启动 `codex`，该命令从 `PATH` 解析；Claude Code 通过共享的子进程执行世界解析 `claude`，并把确切路径交给官方 SDK。加载 Profile 不会安装产品、创建产品状态、探测版本或测试身份验证。它可以提供每个已挂载 Provider 的部署配置，包括由[非交互权限决策](../feature/2026-08-15-product-subagent-noninteractive-permissions.md)负责的产品专属 `permissionMode` 值，但不会把这些选择移入 Agent Preset 或面向模型的工具。命令缺失和产品故障仍局限于发生问题的那次委派。
+这些提供方使用宿主环境已经选定的产品。Codex 启动 `codex`，该命令从 `PATH` 解析；Claude Code 通过共享的子进程执行世界解析 `claude`，并把确切路径交给官方 SDK。加载 Profile 不会安装产品、创建产品状态、探测版本或测试身份验证。它可以提供每个已挂载 Provider 实例的部署配置，包括由[非交互权限决策](../feature/2026-08-15-product-subagent-noninteractive-permissions.md)负责的产品专属 `permissionMode` 值，但不会把这些选择移入 Agent Preset 或面向模型的工具。命令缺失和产品故障仍局限于发生问题的那次委派。
 
 只有选择 Claude Code 提供方的 Profile 才会携带 Claude Agent SDK 的可选平台 CLI（命令行界面）载荷。生产环境仍解析宿主提供的 `claude`；这份 SDK 载荷是提供方包的安装成本，而不是生产可执行文件。
 
 ## 验证
 
-base bundle 测试证明生产 `dsh-base` 既不包含产品提供方依赖，也不包含提供方配置行。Web 组装显式挂载两个可选提供方，并覆盖不暴露任何工具、仅暴露 Codex、仅暴露 Claude 和同时暴露两者这四种工具集合，也覆盖自行创作的 preset 发生改动后的代际隔离。由包负责的 Loader 组装证明 Codex-only 与双提供方按需启用路径会注册选中的提供方，而不会启动产品进程。无密钥 ACP（Agent Client Protocol）快照固定单个产品与两个产品同时启用时的模型可见工具 schema，提供方测试则另行证明原生可执行文件解析、失败、取消和进程树完全停稳。
+base bundle 测试证明生产 `dsh-base` 既不包含产品提供方依赖，也不包含提供方配置项。Web 组装显式挂载两个可选提供方，并覆盖不暴露任何工具、仅暴露 Codex、仅暴露 Claude 和同时暴露两者这四种工具集合，也覆盖自行创作的 preset 发生改动后的代际隔离。由包负责的 Loader 组装证明每个产品的两个命名实例都会完成注册，而不会启动产品进程。无密钥 ACP（Agent Client Protocol）快照固定 Codex 双工具集合与最终四工具组合，提供方测试则另行证明原生可执行文件解析、配置隔离、失败、取消和进程树完全停稳。
 
 ## 考虑过的替代方案
 
-**将产品提供方保留为 Profile 层的按需启用项。** 这样可缩小默认依赖闭包，但要求用户同时编辑 Profile 与 Preset。生产安装排除决策接受这项安装取舍；本说明保留的要求是，任何被选中的提供方都在 host plane 挂载一次，而不是放入 preset。
+**将产品提供方保留为 Profile 层的按需启用项。** 这样可缩小默认依赖闭包，但要求用户同时编辑 Profile 与 Preset。生产安装排除决策接受这项安装取舍；本说明保留的要求是，任何被选中的提供方实例都在 host plane 挂载，而不是放入 preset。
 
 **存储全局或按 Profile 配置的产品启用开关。** 进程级开关会与 Preset 争夺模型可见工具的责任归属，也无法表示两个会话使用不同组合。可用性与身份验证属于部署事实，并非另一份需要持久化的产品状态。
 
-**在每个 Agent Preset 内挂载一个提供方。** 提供方名称属于进程级注册表，因此第二个会话会与第一个冲突。宿主消费方也需要独立于任何单个 agent 的生命周期使用该注册表。
+**在每个 Agent Preset 内挂载提供方。** 提供方名称属于进程级注册表，因此重复组装会话会在同一组已配置名称上发生冲突。宿主消费方也需要独立于任何单个 agent 的生命周期使用该注册表。
 
 **交付四个产品组合 preset。** 四个身份会复制完整组装，只为表示两条独立的工具行。普通行已经能表达完整矩阵，无需新增名单或维护状态。
 
 ## 后果
 
-用户在 Profile 中安装每个被选中的产品提供方，再通过与其他插件相同的 Agent Preset 创作路径暴露它的工具。每个新会话只会获得其所选 preset 所贡献的工具。没有选择产品提供方的 Profile 不承担对应包或模块的加载开销；加载已选择的提供方仍不会启动产品进程、登录、调用模型或创建产品主目录。
+用户在 Profile 中安装每个被选中的产品提供方，挂载所需命名实例，再通过与其他插件相同的 Agent Preset 创作路径公开这些实例的工具。每个新会话只会获得其所选 preset 所贡献的工具。没有选择产品提供方的 Profile 不承担对应包或模块的加载开销；加载已选择的实例仍不会启动产品进程、登录、调用模型或创建产品主目录。
 
 宿主注册表仍是提供方的唯一权威，每个 Preset 仍是模型工具的唯一权威。代价是两层按需启用：Profile 负责安装与 host plane 注册，Preset 负责按 agent 暴露。选择 Claude 提供方还会接受当前 SDK 可选载荷的安装成本。

.agents/notes/implemented/architecture/2026-08-12-plugin-owned-settings-surface.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-08-12-plugin-owned-settings-surface.md
-2026-08-12-plugin-owned-settings-surface.md: 3137cfe81ef3cb78a940f085c559ab4a7b62cce3
-2026-08-12-plugin-owned-settings-surface.zh.md: 8dd5e5ccebf1cfb80b55a615f6049dd391943bd7
+2026-08-12-plugin-owned-settings-surface.md: 722e6cfbe890418e8305f89790e76976027d7775
+2026-08-12-plugin-owned-settings-surface.zh.md: 93e5227d5f6a629fd32f5a2fe22e9882c7f7c5ac

.agents/notes/implemented/architecture/2026-08-12-plugin-owned-settings-surface.md

@@ -22,7 +22,7 @@ Together the two meant a user-authored plugin was configurable only by hand-edit
 
 **`settings.plugin.item` is keyed on the settings namespace.** The slot moved from `list` to `keyed`, the key being the namespace the card edits, following the `tool.call.toolview` precedent where each tool plugin registers its renderer under the tool name. A card declares `key`, not `id`/`order`. The slot is declared by the Plugins section's `configurable` tab, which owns the card list.
 
-**The tab drives dispatch from the served namespaces.** It reads `settings.describe` once, subscribes to the settings-document invalidation and to connection resets, and dispatches one key per served namespace. What renders is the intersection of two ledgers — namespaces a live Host plugin registered, and cards registered under those keys — computed in the tab's controller from the slot ledger (`ctx.slots.entries`, `ctx.slots.subscribe`) and the wire answer.
+**The tab drives dispatch from the served namespaces.** It derives the current served set from `ctx.settingsScope.describe()` and follows that shared settings mirror, while its own listener follows the card slot ledger. It dispatches one key per served namespace. What renders is the intersection of two ledgers — namespaces a live Host plugin registered, and cards registered under those keys — computed in the tab's controller from the slot ledger (`ctx.slots.entries`, `ctx.slots.subscribe`) and the mirror answer. The later [settings describe mirror decision](2026-08-17-settings-describe-mirror.md) owns the browser-wide read and invalidation lifecycle.
 
 Keying makes absence the signal, and that is what removes the bookkeeping the previous shape needed. A namespace another surface owns (`ui-theme`, `permission`, `llm-*`, `agent-presets`) has no card under its key, so it renders nothing without declaring anything anywhere. A card whose namespace this deployment does not serve is never dispatched, which also fixes the old empty-state defect: the tab counted registered cards, including ones rendering nothing, so a deployment exposing none showed an empty list instead of its empty line.
 
@@ -56,6 +56,6 @@ A plugin distributed outside this repository is configurable from the settings p
 
 Deferred, and larger than this change: the redactor returns a `role('secret')` reachable only through a union, intersection, or transform verbatim (its own `TODO(settings-wire-redaction)`), and `schema.toJSON()` carries a secret's default. That gap predates this change, but serving every registered namespace widens its blast radius from schemas audited in this repository to any third-party schema, so the wire should refuse a namespace it cannot prove it can redact. Also deferred: an assembled-composition test of the headline capability — an overlay-mounted fixture plugin whose Host half registers a namespace and whose `dsh.client` half registers a card, asserted end-to-end. The current coverage proves each half separately; the shipped cards' unchanged output cannot prove the new path.
 
-The wire read the section adds is one `settings.describe` beside the per-scope reads the cards already make. Its invalidation is imprecise in one direction: the wire announces document commits and connection resets, not registrations, so a namespace registered after the section's read joins on the next commit or reconnect.
+The section and its cards add no `settings.describe` reads: both derive from the browser-wide mirror. Its invalidation is imprecise in one direction: the wire announces document commits and connection resets, not registrations, so a namespace registered after the mirror's current answer joins on the next commit or reconnect.
 
 Two frictions remain for an author outside this repository, both recorded in the section's README. The browser half must be a `dsh.client` package built in the client module system's lazy-CJS factory format, and the `clientBundle` preset that emits it lives in `packages/client/tsdown.client.ts` rather than a published package. The bundle-purity gate forbids importing this package's card chrome or staged-form model as values, so such a card reimplements staging and revision fencing. Sharing them would mean either publishing the preset or declaring a child slot inside the card so the section supplies the chrome; neither is built.

.agents/notes/implemented/architecture/2026-08-12-plugin-owned-settings-surface.zh.md

@@ -22,7 +22,7 @@ Status: implemented
 
 **`settings.plugin.item` 以 settings 命名空间为键。** 该 slot 从 `list` 改为 `keyed`，键就是卡片所编辑的命名空间，沿用 `tool.call.toolview` 的先例——每个工具插件把自己的渲染器注册在工具名这个键上。卡片声明 `key`，不再声明 `id`/`order`。该 slot 由「插件」分区的 `configurable` 标签页声明，卡片列表归它所有。
 
-**标签页以被服务的命名空间驱动派发。** 它读取一次 `settings.describe`，订阅 settings 文档失效通知与连接重置，并为每个被服务的命名空间派发一个键。渲染出来的是两份账本的交集——存活 Host 插件注册的命名空间，以及注册在这些键上的卡片——由标签页的 controller 从 slot 账本（`ctx.slots.entries`、`ctx.slots.subscribe`）与协议答复算出。
+**标签页以被服务的命名空间驱动派发。** 它从 `ctx.settingsScope.describe()` 派生当前被服务的集合并跟随该共享 settings 镜像，自身的监听器只跟随卡片 slot 账本；随后为每个被服务的命名空间派发一个键。渲染出来的是两份账本的交集——存活 Host 插件注册的命名空间，以及注册在这些键上的卡片——由标签页的 controller 从 slot 账本（`ctx.slots.entries`、`ctx.slots.subscribe`）与镜像应答算出。后续的 [settings describe 镜像决策](2026-08-17-settings-describe-mirror.md)持有浏览器全局的读取与失效生命周期。
 
 以命名空间为键，让「缺席」本身成为信号，而这正是它消掉旧形态所需簿记的原因。归别的界面所有的命名空间（`ui-theme`、`permission`、`llm-*`、`agent-presets`）在其键上没有卡片，于是什么都不渲染，且无需在任何地方声明任何东西。命名空间未被本部署服务的卡片根本不会被派发，这同时修掉了旧的空态缺陷：标签页数的是已注册卡片，其中包含那些什么都不渲染的，因此一个都不暴露的部署看到的是空列表，而不是它那行空态文案。
 
@@ -56,6 +56,6 @@ Status: implemented
 
 以下延后，且都大于本次改动：脱敏器对只能经由 union、intersection 或 transform 抵达的 `role('secret')` 原样返回（其自身的 `TODO(settings-wire-redaction)`），而 `schema.toJSON()` 会携带 secret 的默认值。该缺口早于本次改动，但服务每一个已注册命名空间，把它的影响面从本仓库内经审计的 schema 扩大到任意第三方 schema，因此协议应当拒绝服务它无法证明可安全脱敏的命名空间。同样延后的还有：对本次头号能力的组装态测试——用 overlay 挂载一个 fixture 插件（Host 半注册命名空间、`dsh.client` 半注册卡片）并在端到端断言。当前覆盖分别证明了两个半侧；已发卡片输出未变这一点，证明不了新路径。
 
-分区新增的协议读取是一次 `settings.describe`，与卡片各自已有的 per-scope 读取并列。它的失效通知在一个方向上不精确：协议通告的是文档提交与连接重置，而非注册行为，因此在分区读取之后才被注册的命名空间，要等下一次提交或重连才会加入。
+分区与其中的卡片都不再新增 `settings.describe` 读取：两者都从浏览器全局的镜像派生。它的失效通知在一个方向上不精确：协议通告的是文档提交与连接重置，而非注册行为，因此在镜像当前应答之后才被注册的命名空间，要等下一次提交或重连才会加入。
 
 对仓库之外的作者仍留有两处摩擦，均记在该分区的 README 里。浏览器半侧必须是按客户端模块系统的 lazy-CJS factory 格式构建的 `dsh.client` 包，而产出它的 `clientBundle` 预设位于 `packages/client/tsdown.client.ts`，并非已发布的包。bundle 纯净度门禁禁止以值的形式导入本包的卡片外观与暂存表单模型，因此这样的卡片要重新实现暂存与 revision 设栅。要共享它们，要么发布该预设，要么在卡片内部声明一层子 slot 让分区提供外观；两者都尚未构建。

.agents/notes/implemented/architecture/2026-08-17-settings-describe-mirror.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-08-17-settings-describe-mirror.md
+2026-08-17-settings-describe-mirror.md: a3774699ff328a44aed192a16dea0fa19d03c83c
+2026-08-17-settings-describe-mirror.zh.md: c57f5630b4bee0cd77a29a6f5458cb439c7f0585

.agents/notes/implemented/architecture/2026-08-17-settings-describe-mirror.md

@@ -0,0 +1,34 @@
+# Agent Note: Settings describe mirror
+
+Status: implemented
+
+English | [中文](2026-08-17-settings-describe-mirror.zh.md)
+
+## Problem
+
+A cold web boot issued `settings.describe` fifteen times inside ~200ms, and the count grew by two with every client plugin that owned a preference. Two mechanisms stacked: `SettingsScopeBinder.bind()` started a full-document read per bound scope (six scopes in the product composition, plus the plugin-directory tab, the welcome gate, and the models onboarding join), and `onConnected` emits `connection/reset` on the FIRST connection too, so every one of those readers immediately re-read the answer it had fetched milliseconds earlier. Each reader also carried its own invalidation subscriptions and its own `refreshIfLoaded`-style guard, and fifteen independent reads could in principle land on fifteen different document revisions.
+
+## Decision
+
+**One reader, many derivations.** `dsh-client-ui-settings` owns `SettingsDescribeMirror`, the single `settings.describe` reader in the browser: one snapshot store holding the whole answer, refreshed by the owning plugin's two subscriptions (`settings/document-updated`, `connection/reset`). Concurrent `load()` calls fold into the in-flight read plus at most one rerun. The in-flight slot owns a run before its loading publication can synchronously reenter `load()`, then clears inside the run's own try/finally in the same synchronous segment that observes the rerun flag; a `.finally()` on the returned promise would run one microtask later and let a refresh landing in that gap mark a rerun nobody reads.
+
+`bind()` still returns the unchanged `SettingsScope<T>` face, but the controller is now a selector over the mirror: no read path of its own, the same decode rules, and the write queue kept. A committed write folds its answered view back into the mirror (`acceptView`), so sibling scopes see the new revision with no re-read; the fold invalidates any older in-flight answer, and a write before the first held document reruns that read instead of publishing a partial document. A failed latest write triggers one mirror recovery read. Cross-namespace surfaces — the plugin-directory tab, the permission row (its dynamic enum lives in the namespace schema, which scopes deliberately do not carry), the models join, the agent-preset row's writability, and `hasDocument` — consume `ctx.settingsScope.describe()`, the shared read/fold face (`getSnapshot`/`subscribe`/`ensure`/`acceptView`).
+
+This decision updates the browser read and invalidation mechanics recorded by [Host-backed Web preferences](../bug-fix/2026-08-06-host-backed-web-preferences.md) and [plugin-owned settings surface](2026-08-12-plugin-owned-settings-surface.md), while preserving their preference-ownership and namespace-exposure decisions. It also replaces the direct settings-read description in [official DeepSeek first-run credential setup](../feature/2026-07-30-deepseek-onboarding-credential-setup.md); that join now derives its settings half from this mirror.
+
+The cold-boot budget is pinned at two reads by `apps/web/tests/startup-rpc-budget.e2e.ts`: the mirror's eager bind-time read, plus the first-connection reset read, which is kept deliberately — it closes the window where a document commit lands between the eager HTTP read and the SSE subscription and its invalidation is lost. The plan's original target of one read is unreachable without either accepting that lost-invalidation window or delaying the first read until after the SSE stream opens.
+
+## Alternatives considered
+
+- **Single-flight sharing inside `bind()` only** — deduplicates the concurrent bursts but keeps N direct readers, N subscription sets, and the revision skew; readers outside the binder (welcome, models, tab, permission) gain nothing. Rejected as treating the symptom.
+- **Boot-payload embedding** (host inlines the describe answer into the page boot) — saves the first read but adds a second acquisition path with its own staleness rules on top of the mirror it would still need. Deferred; it composes with the mirror if ever wanted.
+- **Per-namespace `settings.describe(ns)`** — shrinks each answer but keeps one read per consumer, so the fan-out and the growth rate stay. Rejected.
+- **One read (no first-reset re-read)** — reachable only by accepting the lost-invalidation window between the eager HTTP read and the SSE subscription, or by delaying the first read until the stream opens; both trade correctness or first-paint freshness for one loopback request. Rejected in favor of the pinned two.
+
+## Consequences
+
+- Startup `settings.describe` went 15 → 2, and a new preference-owning plugin adds zero reads.
+- Every derived surface shows the same document revision at any moment; the per-reader guards (`refreshWelcomeIfLoaded`, `refreshPermissionIfLoaded`, `refreshDocumentIfLoaded`) and their subscriptions are gone.
+- The mirror refreshes on every document commit regardless of namespace, so an external settings edit now costs one background read even while no settings surface is open — the price of surfaces that open already fresh. The per-namespace `ns !== spec.namespace` filters are gone with the per-scope subscriptions.
+- `credentials.describe` (3 startup calls), `agentPreset.list` (2), and `llm.providers` are separate sources and stay direct; the same mirror pattern fits them if they ever need it.
+- A new direct `settings.describe` caller in client code is a budget regression; the e2e's failure message says to grep for callers outside `ui-settings`.

.agents/notes/implemented/architecture/2026-08-17-settings-describe-mirror.zh.md

@@ -0,0 +1,34 @@
+# Agent Note：Settings describe 镜像
+
+Status: implemented
+
+[English](2026-08-17-settings-describe-mirror.md) | 中文
+
+## 问题
+
+一次冷启动的 web boot 在约 200ms 内发出十五次 `settings.describe`，且每新增一个持有偏好设置的客户端插件，该计数再加二。两个机制叠加：`SettingsScopeBinder.bind()` 为每个绑定的 scope 启动一次全量文档读取（产品组合中有六个 scope，外加插件目录 tab、welcome 门与 models onboarding join），而 `onConnected` 在**首次**连接时同样发出 `connection/reset`，于是上述每个读取方都立即重读了几毫秒前刚取到的应答。每个读取方还各自持有失效订阅与各自的 `refreshIfLoaded` 式防护，且十五次独立读取原则上可能落在十五个不同的文档 revision 上。
+
+## 决定
+
+**一个读取方，多个派生面。**`dsh-client-ui-settings` 持有 `SettingsDescribeMirror`——浏览器中唯一的 `settings.describe` 读取方：一个持有完整应答的快照 store，由所属插件的两个订阅（`settings/document-updated`、`connection/reset`）负责刷新。并发的 `load()` 调用折叠进在飞读取加至多一次尾随重读。在飞槽位会在 loading 发布同步重入 `load()` 之前先取得 run 的所有权，随后在 run 自身 try/finally 内、与读取 rerun 标志相同的同步段中清空；若把清理挂在返回 promise 的 `.finally()` 上，它要晚一个微任务执行，落入该间隙的刷新会标记一个无人读取的 rerun。
+
+`bind()` 返回的 `SettingsScope<T>` 面保持不变，但 controller 现在是镜像上的 selector：自身没有读路径，decode 规则不变，写队列保留。提交成功的写入把应答的 view 折回镜像（`acceptView`），兄弟 scope 无需重读即可看到新 revision；这次折叠会废弃更早发出的在飞应答，而首次完整文档尚未建立时到达的写入会让该读取重跑，不会把单个 namespace 发布成残缺文档。失败的最新写入触发一次镜像恢复读取。跨命名空间的表面——插件目录 tab、permission 行（其动态枚举位于命名空间 schema 中，而 scope 有意不携带 schema）、models join、agent-preset 行的可写性、以及 `hasDocument`——消费 `ctx.settingsScope.describe()` 提供的共享读／折叠面（`getSnapshot`／`subscribe`／`ensure`／`acceptView`）。
+
+本决策更新了[通过 Host settings 持久化 Web 用户偏好](../bug-fix/2026-08-06-host-backed-web-preferences.md)和[由插件自己拥有的设置表层](2026-08-12-plugin-owned-settings-surface.md)所记录的浏览器读取与失效机制，同时保留其中关于偏好所有权与命名空间暴露的决策。它也取代了 [DeepSeek 官方首次使用凭据配置](../feature/2026-07-30-deepseek-onboarding-credential-setup.md)中的设置直读描述；该联接的 settings 部分现在从本镜像派生。
+
+冷启动预算由 `apps/web/tests/startup-rpc-budget.e2e.ts` 钉在两次读取：镜像在绑定时的急切读取，加上首连 reset 触发的读取——后者是有意保留的：它关闭了「文档提交落在急切 HTTP 读取与 SSE 订阅之间、其失效通知丢失」的窗口。方案最初的一次读取目标，若不接受该失效丢失窗口、或不把首次读取推迟到 SSE 流建立之后，无法达成。
+
+## 考虑过的备选
+
+- **仅在 `bind()` 内做 single-flight 共享**——能去重并发风暴，但仍保留 N 个直连读取方、N 套订阅以及 revision 偏差；binder 之外的读取方（welcome、models、tab、permission）毫无受益。以治标为由否决。
+- **boot 载荷内嵌**（宿主把 describe 应答内联进页面 boot）——省下首次读取，却在镜像仍然需要的前提下增加第二条带自身陈旧规则的取数路径。推迟；若将来需要，它可与镜像叠加。
+- **按命名空间的 `settings.describe(ns)`**——缩小单次应答，但每个消费者仍各读一次，扇出与增长率原样保留。否决。
+- **一次读取（去掉首连 reset 重读）**——只有接受「急切 HTTP 读取与 SSE 订阅之间的失效丢失窗口」、或把首次读取推迟到流建立之后才可达成；两者都在用正确性或首屏新鲜度换一次环回请求。否决，保留钉住的两次。
+
+## 后果
+
+- 启动期 `settings.describe` 从 15 次降到 2 次，新增持有偏好设置的插件带来零次新增读取。
+- 任一时刻每个派生面看到的都是同一份文档 revision；各读取方的防护（`refreshWelcomeIfLoaded`、`refreshPermissionIfLoaded`、`refreshDocumentIfLoaded`）及其订阅随之消失。
+- 镜像对任何命名空间的文档提交都会刷新，因此在没有任何设置表面打开时，一次外部设置编辑现在也花费一次后台读取——这是「表面打开即新鲜」的代价。随着各 scope 订阅的删除，按命名空间的 `ns !== spec.namespace` 过滤一并消失。
+- `credentials.describe`（启动 3 次）、`agentPreset.list`（2 次）与 `llm.providers` 是另外的数据源，保持直连；若将来需要，同一镜像模式对它们同样适用。
+- 客户端代码中新增直连 `settings.describe` 调用即是预算回归；e2e 的失败信息会提示在 `ui-settings` 之外 grep 调用方。

.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md
-2026-08-06-host-backed-web-preferences.md: 5d90f2be7c8b4030e9bdc00eed2769491ec009e5
-2026-08-06-host-backed-web-preferences.zh.md: c861c45bff299e06841165a2b36d0781e8f54d99
+2026-08-06-host-backed-web-preferences.md: 2e33d05417bf6c347a57b5c0b6c7281ff1392b5b
+2026-08-06-host-backed-web-preferences.zh.md: 1d3518bb33d334d89408916a5f5210a45b938a01

.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md

@@ -12,9 +12,9 @@ The first theme implementation moved only Appearance to Host settings but awaite
 
 ## Decision
 
-The owning Host halves register three schemas: optional `locale.preference` (`zh` or `en`, where absence delegates to the browser), `ui-theme.preference` (`light`, `dark`, or `system`, default `system`), and `ui-conversation.busyEnter` (`queue` or `steer`, default `queue`). The local settings provider stores explicit choices in `$DSH_HOME/settings.yaml`, which resolves to `~/.dsh/settings.yaml` under the default home. The API proxy explicitly exposes all three namespaces beside the other Web settings; registration alone never crosses that configuration boundary.
+The owning Host halves register three schemas: optional `locale.preference` (`zh` or `en`, where absence delegates to the browser), `ui-theme.preference` (`light`, `dark`, or `system`, default `system`), and `ui-conversation.busyEnter` (`queue` or `steer`, default `queue`). The local settings provider stores explicit choices in `$DSH_HOME/settings.yaml`, which resolves to `~/.dsh/settings.yaml` under the default home. The API proxy serves every registered namespace to a loopback client; field roles still redact secrets.
 
-`dsh-client-ui-settings` provides `ctx.settingsScope.bind(spec)`, which owns one lifecycle per namespace as the browser mirror of the Host-side settings owner seam. It installs `settings/document-updated` and `connection/reset` listeners before starting a background initial read, so no settings transport can block plugin activation and an invalidation cannot fall into a read-before-subscribe gap, and it publishes a snapshot store (status, section value, revision, writability, host/memory mode) the domain service subscribes to. The default decoder validates each incoming section against the namespace's own serialized wire schema, rehydrated through the colocated `ctx.settingsSchema` service, so domains carry no hand-written wire guards. Domain services take the scope as an ordinary constructor collaborator, publish their provisional defaults immediately—browser-derived locale, system theme, and Queue—then adopt an accepted Host section without writing it back; a service constructed without a scope (standalone dictionary or policy fixtures) simply stays process-local.
+`dsh-client-ui-settings` owns one browser-wide settings describe mirror and provides `ctx.settingsScope.bind(spec)` as a per-namespace selector over it. The mirror installs `settings/document-updated` and `connection/reset` listeners before starting its background read, so no settings transport can block plugin activation and an invalidation cannot fall into a read-before-subscribe gap. Each bound scope publishes a snapshot store (status, section value, revision, writability, host/memory mode) the domain service subscribes to, without adding a wire read or listener of its own. The default decoder validates each incoming section against the namespace's own serialized wire schema, rehydrated through the colocated `ctx.settingsSchema` service, so domains carry no hand-written wire guards. Domain services take the scope as an ordinary constructor collaborator, publish their provisional defaults immediately—browser-derived locale, system theme, and Queue—then adopt an accepted Host section without writing it back; a service constructed without a scope (standalone dictionary or policy fixtures) simply stays process-local. The shared read and invalidation lifecycle is specified by the later [settings describe mirror decision](../architecture/2026-08-17-settings-describe-mirror.md).
 
 User changes update the live service synchronously and queue a `settings.mutate` path operation through `scope.set`. The scope serializes gestures, sends the latest known namespace revision as `expectedRevision`, records every successful revision, and lets only the latest write settlement republish live state. A rejected or failed latest write reloads Host state. Disposal rejects new work, skips queued operations, suppresses publication by the in-flight operation, and waits for that operation to settle before the plugin reaches quiescence.
 

.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.zh.md

@@ -12,9 +12,9 @@ Web 的 Appearance、Language 和繁忙态 Enter 偏好原本存在浏览器 `lo
 
 ## 决策
 
-各领域所属的 Host half 注册三份 schema：可选的 `locale.preference`（`zh` 或 `en`，缺失时交由浏览器决定）、`ui-theme.preference`（`light`、`dark` 或 `system`，默认为 `system`），以及 `ui-conversation.busyEnter`（`queue` 或 `steer`，默认为 `queue`）。本地 settings 提供方将显式选择存入 `$DSH_HOME/settings.yaml`，在使用默认 home 时，该路径解析为 `~/.dsh/settings.yaml`。API 代理会显式暴露这三个 namespace，与其他 Web settings 并列；仅注册它们，绝不会跨越该配置边界。
+各领域所属的 Host half 注册三份 schema：可选的 `locale.preference`（`zh` 或 `en`，缺失时交由浏览器决定）、`ui-theme.preference`（`light`、`dark` 或 `system`，默认为 `system`），以及 `ui-conversation.busyEnter`（`queue` 或 `steer`，默认为 `queue`）。本地 settings 提供方将显式选择存入 `$DSH_HOME/settings.yaml`，在使用默认 home 时，该路径解析为 `~/.dsh/settings.yaml`。API 代理会向回环客户端服务每一个已注册的 namespace；字段角色仍会脱敏机密值。
 
-`dsh-client-ui-settings` 提供 `ctx.settingsScope.bind(spec)`，为每个 namespace 持有一份生命周期，作为 Host 侧 settings owner seam 的浏览器镜像。它在开始后台初始读取之前安装 `settings/document-updated` 和 `connection/reset` 监听器，因此任何 settings 传输都不会阻塞插件激活，失效通知也不会掉入先读取、后订阅的空档；它还会发布一个供领域服务订阅的快照 store（状态、分节值、revision、可写性、host／内存模式）。默认解码器会对照该 namespace 自身的序列化 wire schema（经同包的 `ctx.settingsSchema` 服务还原）校验每个传入分节，因此各领域无需携带手写的 wire 校验器。领域服务把 scope 当作普通的构造函数协作者接收，立即发布各自的暂定默认值：由浏览器派生的 locale、系统主题和 Queue；随后采纳已获接受的 Host 分节，但不将其写回；不带 scope 构造的服务——独立词典或政策 fixture（测试前置数据）——则仅停留在进程本地。
+`dsh-client-ui-settings` 持有一个浏览器全局的 settings describe 镜像，并提供 `ctx.settingsScope.bind(spec)` 作为该镜像上的逐 namespace selector。镜像在开始后台读取之前安装 `settings/document-updated` 和 `connection/reset` 监听器，因此任何 settings 传输都不会阻塞插件激活，失效通知也不会掉入先读取、后订阅的空档。每个绑定的 scope 会发布一个供领域服务订阅的快照 store（状态、分节值、revision、可写性、host／内存模式），自身不再增加协议读取或监听器。默认解码器会对照该 namespace 自身的序列化 wire schema（经同包的 `ctx.settingsSchema` 服务还原）校验每个传入分节，因此各领域无需携带手写的 wire 校验器。领域服务把 scope 当作普通的构造函数协作者接收，立即发布各自的暂定默认值：由浏览器派生的 locale、系统主题和 Queue；随后采纳已获接受的 Host 分节，但不将其写回；不带 scope 构造的服务——独立词典或政策 fixture（测试前置数据）——则仅停留在进程本地。共享读取与失效生命周期由后续的 [settings describe 镜像决策](../architecture/2026-08-17-settings-describe-mirror.md)规定。
 
 用户变更会同步更新实时服务，并经 `scope.set` 将一项 `settings.mutate` 路径操作排入队列。scope 会串行处理手势，以最新已知 namespace revision 作为 `expectedRevision` 发送，记录每次成功写入的 revision，并且只允许最新写入的结算结果重新发布实时状态。最新写入被拒或失败时，scope 会重新加载 Host 状态。插件释放会拒绝新工作、跳过已排队操作、抑制运行中操作发布状态，并等待该操作结算后才让插件达到完全停稳。
 

.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md
-2026-07-30-deepseek-onboarding-credential-setup.md: 823d10a723af70ec4ff51018b8b86198db0f5c29
-2026-07-30-deepseek-onboarding-credential-setup.zh.md: 7e8d79c23c4b1489bfd818c90558f36509635486
+2026-07-30-deepseek-onboarding-credential-setup.md: 87533e7a55f9b1f05f6a4ba58c3c9888780c158c
+2026-07-30-deepseek-onboarding-credential-setup.zh.md: 575d8232b4837b57d9508ed613530606c05db1f7

.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.md

@@ -10,7 +10,7 @@ The [web configuration plane](../architecture/2026-07-30-web-config-plane.md) ma
 
 ## Decision
 
-**One readiness projection owns both Models and onboarding facts.** `ui-settings-models` keeps a single store that joins `llm.providers({})`, redacted `settings.describe({})`, and batched `credentials.describe({refs})`. The onboarding projection selects the `deepseek-official` configurable-provider entry owned by the `llm-deepseek` namespace and empty settings path, reads the effective `apiKeyEnv`, and evaluates the matching credential descriptor. A live route with the same provider id but no matching configurable-provider declaration is adapter-absent for onboarding. A configured process-environment credential is ready and remains read-only.
+**One readiness projection owns both Models and onboarding facts.** `ui-settings-models` keeps a single store that joins `llm.providers({})`, the redacted namespace views held by the shared settings describe mirror, and batched `credentials.describe({refs})`. The onboarding projection selects the `deepseek-official` configurable-provider entry owned by the `llm-deepseek` namespace and empty settings path, reads the effective `apiKeyEnv`, and evaluates the matching credential descriptor. A live route with the same provider id but no matching configurable-provider declaration is adapter-absent for onboarding. A configured process-environment credential is ready and remains read-only. The later [settings describe mirror decision](../architecture/2026-08-17-settings-describe-mirror.md) owns that settings read and its invalidation ordering.
 
 **The settings shell contributes ordering, not provider policy.** `ui-settings` declares a root-scoped `settings.onboarding` list slot and mounts one ordered step at a time while the current surface is the empty Hero. The active registrant receives `complete()` and a private `openSection(id)` callback; completion transfers ownership to the next entry. `ui-settings-models` registers the DeepSeek step, the preceding welcome notice, and its Models section through `slots.inject()`, so every contribution follows one client Cordis plugin's lifecycle and the dialogs cannot stack. Their common presentation is owned by the [shared-modal onboarding decision](2026-08-13-shared-modal-product-onboarding.md).
 

.agents/notes/implemented/feature/2026-07-30-deepseek-onboarding-credential-setup.zh.md

@@ -10,7 +10,7 @@ Status: implemented
 
 ## 决策
 
-**Models 与首次使用引导共享同一个就绪状态投影。**`ui-settings-models` 维护一个 store，把 `llm.providers({})`、脱敏后的 `settings.describe({})` 和批量调用的 `credentials.describe({refs})` 联接为同一份状态。首次使用投影选取由 `llm-deepseek` namespace 与空 settings path 持有的 `deepseek-official` 可配置提供方条目，读取生效的 `apiKeyEnv`，并检查对应的凭据描述符。同 provider id 但没有匹配可配置提供方声明的存活路由，在首次使用引导中视为适配器缺失。通过进程环境提供的凭据若已配置，则判定为就绪并保持只读。
+**Models 与首次使用引导共享同一个就绪状态投影。**`ui-settings-models` 维护一个 store，把 `llm.providers({})`、共享 settings describe 镜像持有的已脱敏 namespace views 和批量调用的 `credentials.describe({refs})` 联接为同一份状态。首次使用投影选取由 `llm-deepseek` namespace 与空 settings path 持有的 `deepseek-official` 可配置提供方条目，读取生效的 `apiKeyEnv`，并检查对应的凭据描述符。同 provider id 但没有匹配可配置提供方声明的存活路由，在首次使用引导中视为适配器缺失。通过进程环境提供的凭据若已配置，则判定为就绪并保持只读。后续的 [settings describe 镜像决策](../architecture/2026-08-17-settings-describe-mirror.md)持有这次 settings 读取及其失效顺序。
 
 **设置外壳只贡献排序，不持有提供方策略。** `ui-settings` 声明一个根作用域的 `settings.onboarding` list slot，并在当前界面为空白 Hero 时，每次只挂载一个有序步骤。当前注册方会收到 `complete()` 和私有 `openSection(id)` 回调；完成当前步骤后，所有权转交给下一项。`ui-settings-models` 通过 `slots.inject()` 注册 DeepSeek 步骤、排在它之前的欢迎声明及 Models 分区，因此所有贡献都跟随同一个 client Cordis 插件的生命周期，两个弹窗也无法堆叠。它们的共用展示由[共用弹窗引导决策](2026-08-13-shared-modal-product-onboarding.md)持有。
 

.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md
-2026-07-31-browser-derived-initial-locale.md: 072f91b730cfc9eaeead7701d2b20d12b443acb3
-2026-07-31-browser-derived-initial-locale.zh.md: 97f0f0007474c21fb618a085b506bc919586f624
+2026-07-31-browser-derived-initial-locale.md: 66fd56327aeb4463bfb8f6426ce7f7962d339782
+2026-07-31-browser-derived-initial-locale.zh.md: 721a785aa476951e7254c50230ddc092b9f8b211

.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md

@@ -8,29 +8,39 @@ English | [中文](2026-07-31-browser-derived-initial-locale.zh.md)
 
 The Settings Language row opened every first visit in Chinese: `LocaleRuntime` read `dsh.locale` from localStorage and fell straight back to `zh` when nothing was stored. The browser already states which languages its user reads — `navigator.languages` is that statement — and the app ignored it, so an English reader met a Chinese product and had to find a Chinese-labelled settings row to escape it. The fallback was doing two jobs at once: the last resort for an unresolvable locale, and the answer for every user who had simply never chosen.
 
+Reading the browser fixed the readers whose browser names a language this app ships, but left the residual case wrong: a browser asking for neither `zh` nor `en` (`fr`, `de`) still fell back to `zh`. Those readers are the least likely to read Chinese.
+
 ## Decision
 
-**The provisional locale resolves through the browser, then `FALLBACK_LOCALE`; an explicit Host preference replaces it live.** `resolveInitialLocale()` in `packages/client/locale/src/client/index.ts` runs at service construction and expresses the browser/fallback order. The nonblocking settings lifecycle then applies optional `locale.preference` from `$DSH_HOME/settings.yaml`; absence leaves the browser-derived value active.
+**The provisional locale resolves through the browser, then `FALLBACK_LOCALE` (`en`); an explicit Host preference replaces it live.** `resolveInitialLocale()` in `packages/client/locale/src/client/index.ts` runs at service construction and expresses the browser/fallback order. The nonblocking settings lifecycle then applies optional `locale.preference` from `$DSH_HOME/settings.yaml`; absence leaves the browser-derived value active.
+
+**One constant serves both the opening locale and the dictionary fallback, because the dictionaries are symmetric.** `FALLBACK_LOCALE` answers both "which language does the UI open in when the browser names none we ship" and "which dictionary backs a key the active locale misses". Those are different questions, and splitting them into two constants would be right if either answer had to differ — but every shipped `zh`/`en` pair declares identical key sets, so the fallback step always resolves and both answers are `en`. The residual case points at English rather than zh because a browser naming neither shipped language is the reader least likely to read Chinese. `scripts/locale-dictionary-parity.spec.ts` gates the symmetry the shared constant depends on: a key added to one side only fails that spec by name, instead of surfacing later as a bare key such as `list.aria` in a running UI.
 
 **Browser matching is on the primary subtag, over the ordered list.** `detectBrowserLocale()` walks `[...(navigator.languages ?? []), navigator.language]` and returns the first entry whose primary subtag names a shipped locale, so `zh-Hans-CN` and `zh-TW` both land on `zh` and `en-GB` on `en`, while a browser asking only for languages this app does not ship (`fr`, `de`) yields nothing and leaves `FALLBACK_LOCALE` in charge. `navigator.language` trails the list and covers its absence on hosts that ship a Navigator without `languages` — the DOM lib types it as always present, so that tolerance carries a narrow lint exception, the same environment-boundary distrust the `localStorage` guards already express.
 
-**`window`, not `navigator`, is the browser test.** Node ≥ 21 exposes a global `navigator` reporting the machine's own language (`en-US` on the CI runners), so gating on `navigator` would have let a node boot of the client tree resolve to `en` instead of the documented fallback. Gating on `window` keeps every non-browser run on `FALLBACK_LOCALE`.
+**`window`, not `navigator`, is the browser test.** Node ≥ 21 exposes a global `navigator` reporting the machine's own language, so gating on `navigator` would let a node boot of the client tree resolve to the machine's language instead of the documented fallback. Gating on `window` keeps every non-browser run on `FALLBACK_LOCALE`.
 
 **An explicit choice is durable.** `setLocale` writes through the Host settings API, so a user who picked a language keeps it across browser origins and system languages that share the same DSH home. Nothing writes the detected locale back: detection is re-derived every boot and stays invisible to the “has the user chosen?” question.
 
-**The browser e2e lane pins browser language.** Scenarios asserting Chinese copy (`access-confirmation`, `models-settings`, `onboarding-deepseek-config`, `settings-chrome`) open their page with `locale: ZH_BROWSER_LOCALE` from `apps/web/tests/support.ts`; `newEnglishPage` advertises `en-US`. `settings-chrome.e2e.ts` opens a fresh Host home with no explicit locale and asserts its English browser produces an English settings surface—the assembled-app proof of this feature.
+**`<html lang>` follows the resolved locale, and the served markup cannot.** `apps/web/index.html` is one static file serving every visitor, so whatever it declares is wrong for somebody: resolution happens in the client, after the document is parsed. The locale plugin therefore sets `document.documentElement.lang` from the active locale — once at activation, because detection or an adopted Host preference may already disagree with the markup, and again on every switch. The markup declares the product default (`en`) so the pre-boot document is not actively misleading. Assistive technology and browser features (pronunciation rules, translation offers, font fallback, spell check) read this attribute, so a stale value misreports the document language rather than merely looking untidy. The attribute carries a BCP 47 tag rather than the app's locale id: `zh` alone leaves the script ambiguous, so the shipped Chinese copy declares `zh-CN`.
+
+**The browser e2e lane pins browser language.** Scenarios asserting Chinese copy (`access-confirmation`, `models-settings`, `onboarding-deepseek-config`, `settings-chrome`) open their page with `locale: ZH_BROWSER_LOCALE` from `apps/web/tests/support.ts`; `newEnglishPage` advertises `en-US`. `settings-chrome.e2e.ts` opens a fresh Host home with no explicit locale twice: an `en-US` browser and an `fr-FR` one both reach an English surface. The `fr-FR` scenario is the one that pins the fallback — an `en-US` browser would land on English under detection or fallback alike, so only an unshipped language distinguishes them, and the zh scenarios prove detection still overrides the fallback.
 
 ## Alternatives considered
 
 - **`Intl.DateTimeFormat().resolvedOptions().locale` or a single `navigator.language` read**: both collapse the user's ordered preference list to one tag, so a `['de', 'en', 'zh']` reader gets zh instead of en. The list is the part of the browser statement worth reading.
 - **Persisting the detected locale on first boot**: it would make detection a one-time event and let a stale first visit outlive a changed browser language, and it destroys the distinction the resolution order rests on — a stored value would no longer mean "the user chose this".
 - **Full BCP 47 negotiation (`Intl.LocaleMatcher`-style lookup, region and script weighting)**: with exactly two shipped locales that differ in language, primary-subtag matching is the whole of the correct answer; a negotiation layer would be untestable surface with no behavior to justify it.
-- **A cordis config key for the default locale**: the deployment does not vary here — the fallback is the product's answer for "no signal at all", not a knob. Repo policy reserves `Config` fields for deployment-varying choices with a current consumer.
+- **A cordis config key for the fallback locale**: the deployment does not vary here — the fallback is the product's answer for "no signal at all", not a knob. Repo policy reserves `Config` fields for deployment-varying choices with a current consumer.
+- **Two constants, one for the opening locale and one for the dictionary fallback**: it separates two genuinely different questions, and would be required if the answers differed. They do not: the dictionaries are symmetric, so both are `en`, and a second constant would be two names for one value plus a rule nothing enforces. The symmetry itself is worth enforcing, so it is gated directly instead.
+- **Keeping `zh` as the dictionary fallback while opening in `en`**: it reads as the conservative choice, but with symmetric dictionaries it never resolves a key that `en` would not, so it buys nothing; and where it would matter — a key present only in `zh` — rendering Chinese text inside an otherwise English UI is worse than the bare key a reviewer would notice.
 - **Keeping the e2e lane's zh scenarios on storage pinning (`dsh.locale=zh`)**: it would keep the suite green while removing the only place the browser-derived path runs in an assembled app; pinning the browser language instead exercises the new resolution end to end.
+- **Serving `<html lang>` per request, or leaving the static attribute alone**: computing it server-side would need the request's `Accept-Language` to re-derive what the client resolves anyway, duplicating the rule in two places and still losing to a stored preference the server does not read. Leaving it static is what made the attribute permanently wrong for one language or the other. Setting it from the resolved locale keeps one source of truth.
 
 ## Consequences
 
-- A first visit from an English browser lands in English, and the Language row still shows the same two self-described options, so the escape hatch is unchanged in either direction.
-- `FALLBACK_LOCALE` narrows to its real job — the dictionary fallback and the no-signal answer — and stops standing in for "the user has not chosen".
-- Tests that construct a `LocaleRuntime` under jsdom now depend on the environment's `navigator`: specs asserting localized copy declare their browser with one suite-level `usePinnedBrowserLanguages('zh-CN')` (dsh-client-test-runtime), and any future spec asserting a default must do the same. This package's own specs stub the globals directly, because they need shapes the helper deliberately cannot express (absent `languages`, a list decoupled from `language`, no `window` at all).
+- A first visit from an English browser lands in English, a Chinese browser in Chinese, and a browser naming neither lands in English rather than Chinese. The Language row still shows the same two self-described options, so the escape hatch is unchanged in either direction.
+- Dictionary resolution reverses direction: a key missing from the active locale now falls to `en`, not `zh`. With symmetric dictionaries no shipped key changes behavior, which is why the parity gate exists — it is the assumption that reversal rests on.
+- `<html lang>` now reports the language on screen in both directions, which closes [#2160](https://github.com/deepseek-harness/deepseek-harness/issues/2160). A client that never activates the locale plugin keeps the served default, so the attribute degrades to the old static behavior rather than to a blank value.
+- Non-browser runs of the client tree (node boots, the non-jsdom unit lane) now open in `en`. Specs that assert shipped Chinese copy must set `setLocale('zh')` explicitly on the runtime they construct; a suite-level `usePinnedBrowserLanguages('zh-CN')` only works in files that also declare `@vitest-environment jsdom`, because without a `window` the detection path never reads `navigator` at all. Seven `*.client.spec.ts` files carried such a dead pin and were relying on the old `zh` fallback instead.
 - Detection cost is one array walk per service construction and no implicit settings write; an explicit Host preference may cause one live convergence after plugin activation.

.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.zh.md

@@ -8,29 +8,39 @@ Status: implemented
 
 设置里的语言行在每一次首访时都以中文开场：`LocaleRuntime` 从 localStorage 读取 `dsh.locale`，读不到就直接回落到 `zh`。浏览器本已声明其使用者阅读哪些语言——`navigator.languages` 就是这份声明——而应用对此视而不见，于是英文读者迎面撞上一个中文产品，还得先找到一行中文标签的设置项才能脱身。回落值当时同时承担两份职责：既是无法解析出 locale 时的最后兜底，也是所有从未做过选择的用户拿到的答案。
 
+读取浏览器修好了那些浏览器声明了本应用所提供语言的读者，但残余情形依然是错的：既不请求 `zh` 也不请求 `en` 的浏览器（`fr`、`de`）仍会回落到 `zh`。这些读者恰恰最不可能阅读中文。
+
 ## Decision
 
-**暂定 locale 先经浏览器、再经 `FALLBACK_LOCALE` 解析；显式 Host 偏好会实时替换它。** `packages/client/locale/src/client/index.ts` 中的 `resolveInitialLocale()` 在服务构造时运行，并表达浏览器／回落顺序。随后，非阻塞 settings 生命周期会应用 `$DSH_HOME/settings.yaml` 中可选的 `locale.preference`；若该值缺失，则继续使用由浏览器派生的值。
+**暂定 locale 先经浏览器、再经 `FALLBACK_LOCALE`（`en`）解析；显式 Host 偏好会实时替换它。** `packages/client/locale/src/client/index.ts` 中的 `resolveInitialLocale()` 在服务构造时运行，并表达浏览器／回落顺序。随后，非阻塞 settings 生命周期会应用 `$DSH_HOME/settings.yaml` 中可选的 `locale.preference`；若该值缺失，则继续使用由浏览器派生的值。
+
+**开场 locale 与字典回落值共用一个常量，因为两侧字典是对称的。** `FALLBACK_LOCALE` 同时回答「浏览器未声明任何本应用提供的语言时，界面以哪种语言开场」与「当前 locale 的字典缺失某个 key 时由哪本字典兜住」。这是两个不同的问题，若其中任一答案必须不同，拆成两个常量才是对的——但每一对已提供的 `zh`／`en` 字典都声明了完全相同的 key 集合，因此回落这一步总能解析成功，两个答案都是 `en`。残余情形指向英文而非 `zh`，是因为一个声明了本应用都不支持的语言的浏览器，其读者最不可能读中文。`scripts/locale-dictionary-parity.spec.ts` 为这个共用常量所依赖的对称性设了门禁：只加在一侧的 key 会让该用例指名失败，而不是日后在运行中的界面里显现为形如 `list.aria` 的裸 key。
 
 **浏览器匹配按主子标签进行，且遍历有序列表。** `detectBrowserLocale()` 遍历 `[...(navigator.languages ?? []), navigator.language]`，返回主子标签命中已提供 locale 的首个条目，因此 `zh-Hans-CN` 与 `zh-TW` 同归 `zh`、`en-GB` 归 `en`；而只请求本应用不提供的语言（`fr`、`de`）的浏览器则什么都匹配不到，交由 `FALLBACK_LOCALE` 接管。`navigator.language` 排在列表之后，并兜住那些 Navigator 上没有 `languages` 的宿主——DOM 库把它标注为必然存在，所以这份容忍带一条窄口径 lint 例外，与 `localStorage` 守卫表达的环境边界不信任同源。
 
-**判定浏览器用的是 `window` 而非 `navigator`。** Node ≥ 21 暴露全局 `navigator` 并报告机器自身语言（CI runner 上是 `en-US`），因此以 `navigator` 把关会让 node 启动客户端树时解析成 `en`，而非文档约定的回落值。以 `window` 把关可使所有非浏览器运行都停留在 `FALLBACK_LOCALE`。
+**判定浏览器用的是 `window` 而非 `navigator`。** Node ≥ 21 暴露全局 `navigator` 并报告机器自身语言，因此以 `navigator` 把关会让 node 启动客户端树时解析成机器语言，而非文档约定的回落值。以 `window` 把关可使所有非浏览器运行都停留在 `FALLBACK_LOCALE`。
 
 **显式选择具有持久性。** `setLocale` 通过 Host settings API 写入，因此选过语言的用户可在共享同一 DSH home 的不同浏览器 origin 与系统语言之间保留原选择。没有任何代码把探测到的 locale 写回：探测在每次启动时重新推导，对「用户是否做过选择」这一问题始终不可见。
 
-**浏览器 e2e 车道固定浏览器语言。** 断言中文文案的场景（`access-confirmation`、`models-settings`、`onboarding-deepseek-config`、`settings-chrome`）以 `apps/web/tests/support.ts` 的 `locale: ZH_BROWSER_LOCALE` 打开页面；`newEnglishPage` 声明 `en-US`。`settings-chrome.e2e.ts` 使用没有显式 locale 的全新 Host home，断言其英文浏览器会生成英文 settings 界面：这是本功能在组装后应用中的证据。
+**`<html lang>` 跟随解析出的 locale，而所服务的 markup 做不到这一点。** `apps/web/index.html` 是一份静态文件，服务所有访问者，因此它声明什么都必然对某些人是错的：解析发生在客户端，在文档被解析之后。于是由 locale 插件依据当前 locale 设置 `document.documentElement.lang`——激活时设置一次，因为探测结果或已采纳的 Host 偏好可能已与 markup 不一致；此后每次切换再设置一次。markup 声明产品默认值（`en`），使启动前的文档不至于主动误导。无障碍技术与浏览器功能（发音规则、翻译提示、字体回退、拼写检查）都读取该属性，因此陈旧的值是在误报文档语言，而不只是看起来不整齐。该属性承载 BCP 47 标签而非应用内部的 locale id：单独的 `zh` 会使文字（script）含义不明，因此已提供的中文文案声明 `zh-CN`。
+
+**浏览器 e2e 车道固定浏览器语言。** 断言中文文案的场景（`access-confirmation`、`models-settings`、`onboarding-deepseek-config`、`settings-chrome`）以 `apps/web/tests/support.ts` 的 `locale: ZH_BROWSER_LOCALE` 打开页面；`newEnglishPage` 声明 `en-US`。`settings-chrome.e2e.ts` 两次使用没有显式 locale 的全新 Host home：`en-US` 浏览器与 `fr-FR` 浏览器都会抵达英文界面。真正钉住回落值的是 `fr-FR` 那个场景——`en-US` 浏览器无论走探测还是走回落都会落在英文，因此只有本应用不提供的语言才能区分二者，而中文场景则证明探测仍然覆盖回落值。
 
 ## Alternatives considered
 
 - **`Intl.DateTimeFormat().resolvedOptions().locale` 或单读 `navigator.language`**：两者都把用户的有序偏好列表塌缩成一个标签，于是 `['de', 'en', 'zh']` 的读者拿到的是 zh 而非 en。列表恰恰是浏览器这份声明里最值得读的部分。
 - **首次启动即持久化探测结果**：那会把探测变成一次性事件，让一次陈旧的首访凌驾于此后改变的浏览器语言之上，也摧毁了整个解析顺序所依赖的区分——存储值将不再意味着「用户选了它」。
 - **完整的 BCP 47 协商（`Intl.LocaleMatcher` 式查找、地区与文字权重）**：在只提供两个语言互异的 locale 时，主子标签匹配就是正确答案的全部；协商层只会带来无行为支撑、也无从测试的表面积。
-- **为默认 locale 增加一个 Cordis 配置键**：此处部署之间并无差异——回落值是产品对「完全没有信号」给出的答案，不是旋钮。仓库策略把 `Config` 字段留给有当前消费方、且随部署变化的选择。
+- **为回落 locale 增加一个 Cordis 配置键**：此处部署之间并无差异——回落值是产品对「完全没有信号」给出的答案，不是旋钮。仓库策略把 `Config` 字段留给有当前消费方、且随部署变化的选择。
+- **拆成两个常量，一个管开场 locale、一个管字典回落**：它区分了两个确实不同的问题，若两个答案不同也确有必要。但它们并不不同：字典是对称的，因此两者都是 `en`，第二个常量只会是同一个值的两个名字，外加一条无人强制的规则。对称性本身值得强制，所以直接为它设门禁。
+- **开场用 `en`、字典回落仍保留 `zh`**：这看起来是保守选择，但在字典对称的前提下，它能解析的 key 与 `en` 完全相同，因此毫无收益；而在它真正会起作用的情形——某个 key 只存在于 `zh`——在整体英文的界面里渲染出中文文本，比让 reviewer 一眼看见裸 key 更糟。
 - **让 e2e 车道的中文场景继续钉存储项（`dsh.locale=zh`）**：那会让套件保持绿色，却抹掉浏览器推导路径在组装后应用中唯一的运行处；改钉浏览器语言才能端到端地演练新的解析过程。
+- **按请求服务 `<html lang>`，或干脆不管这个静态属性**：在服务端计算它需要用请求的 `Accept-Language` 去重新推导客户端本就会解析的结果，使同一条规则在两处重复，而且仍会输给服务端并不读取的存储偏好。放任其保持静态，正是该属性对某一种语言永远错误的原因。依据解析出的 locale 来设置，可保持单一真源。
 
 ## Consequences
 
-- 来自英文浏览器的首访落在英文界面，而语言行依然呈现同样两个以自身语言自述的选项，两个方向的脱身通道都未改变。
-- `FALLBACK_LOCALE` 收窄回它真正的职责——字典回落与无信号时的答案——不再兼职充当「用户尚未选择」。
-- 在 jsdom 下构造 `LocaleRuntime` 的测试现在依赖环境的 `navigator`：断言本地化文案的用例以一行套件级 `usePinnedBrowserLanguages('zh-CN')`（dsh-client-test-runtime）声明其浏览器，今后任何断言默认值的用例同样如此。本包自己的用例直接给全局打桩，因为它们需要该 helper 刻意不表达的形状（`languages` 缺失、列表与 `language` 解耦、完全没有 `window`）。
+- 来自英文浏览器的首访落在英文界面，中文浏览器落在中文界面，而两者皆未声明的浏览器落在英文而非中文界面。语言行依然呈现同样两个以自身语言自述的选项，两个方向的脱身通道都未改变。
+- 字典解析方向发生反转：当前 locale 缺失的 key 现在回落到 `en` 而非 `zh`。在字典对称的前提下，没有任何已提供的 key 行为发生变化——这正是那道对称性门禁存在的原因：它是这次反转所依赖的前提。
+- `<html lang>` 现在在两个方向上都如实报告屏幕上的语言，这也关闭了 [#2160](https://github.com/deepseek-harness/deepseek-harness/issues/2160)。若某个客户端从未激活 locale 插件，则保留所服务的默认值，因此该属性退化为旧的静态行为，而不会退化为空值。
+- 客户端树的非浏览器运行（node 启动、非 jsdom 单测车道）现在以 `en` 开场。断言已提供中文文案的用例必须在其构造的 runtime 上显式调用 `setLocale('zh')`；套件级的 `usePinnedBrowserLanguages('zh-CN')` 仅在同时声明了 `@vitest-environment jsdom` 的文件中生效，因为没有 `window` 时探测路径根本不会读取 `navigator`。此前有七个 `*.client.spec.ts` 文件带着这样一条失效的固定语句，实际依赖的是旧的 `zh` 回落值。
 - 探测的代价是每次服务构造遍历一次数组，且不会隐式写入 settings；插件激活后，显式 Host 偏好可能引发一次实时收敛。

.agents/notes/implemented/feature/2026-08-04-claude-code-and-codex-subagent-backends.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-04-claude-code-and-codex-subagent-backends.md
-2026-08-04-claude-code-and-codex-subagent-backends.md: a75c8c50144ca71190fc8ad16f623b062bd3f492
-2026-08-04-claude-code-and-codex-subagent-backends.zh.md: 21e05fb8ede1a7e2a58182687648e9513a634d96
+2026-08-04-claude-code-and-codex-subagent-backends.md: 95ede1d0de32bb8bd46f1c9e7dc968d5a6250741
+2026-08-04-claude-code-and-codex-subagent-backends.zh.md: fa47d0a449a736df259018c56746f2015905591e

.agents/notes/implemented/feature/2026-08-04-claude-code-and-codex-subagent-backends.md

@@ -12,12 +12,12 @@ The product integrations must not become second owners for task text, cwd, cance
 
 ## Decision
 
-The harness publishes two sibling one-shot provider packages: `codex` and `claude-code`. This note owns their product protocols, result mapping, and process lifecycle; the [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md) owns their explicit Profile installation and host-plane placement, the [product one-shot background decision](2026-08-12-product-subagent-one-shot-background-tasks.md) owns the model-visible scheduling choice, the [non-interactive permissions decision](2026-08-15-product-subagent-noninteractive-permissions.md) owns each product Provider's Profile-selected mode and safe permission decisions, and the [structured failure-facts decision](2026-08-18-product-subagent-failure-facts.md) owns version-pinned product categories, lifecycle stages, and process outcomes exposed through the same diagnostic. Loading either provider starts no product process, and each tool accepts only a standalone text task; product selection remains deployment configuration.
+The harness publishes two sibling one-shot provider packages whose default registry names are `codex` and `claude-code`. This note owns their product protocols, result mapping, and process lifecycle; the [named-instance decision](2026-08-18-product-subagent-named-instances.md) owns Profile-selected provider identity and static tool binding, the [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md) owns their explicit Profile installation and host-plane placement, the [product one-shot background decision](2026-08-12-product-subagent-one-shot-background-tasks.md) owns the model-visible scheduling choice, the [non-interactive permissions decision](2026-08-15-product-subagent-noninteractive-permissions.md) owns each product Provider's Profile-selected mode and safe permission decisions, and the [structured failure-facts decision](2026-08-18-product-subagent-failure-facts.md) owns version-pinned product categories, lifecycle stages, and process outcomes exposed through the same diagnostic. Both packages accept multiple named instances. Loading either provider starts no product process, and each tool accepts only a standalone text task; product and instance selection remain deployment configuration.
 
 Both providers report `inheritsParentContext: false`, advertise no optional start capabilities, and pass the parent Session cwd without copying the parent conversation. Their documented tools use `backgroundMode: 'one-shot'` and `maxDepth: 'provider-managed'`: the consumer keeps foreground collection as the default and may place the same run in the generic Job runtime, while recursion policy stays with the out-of-process product. Every call creates a fresh product process and a non-resumable product conversation. `ctx.subagents` owns named-request resolution and paired lifecycle events; `dsh-tool-subagent` owns model-visible scheduling and foreground-versus-Job adaptation; `ctx.jobs` and `dsh-tool-jobs` own Job ids, state, output, controls, notices, and parent-owner cancellation; each product provider owns native result mapping, while `dsh-subprocess` owns credential scrubbing, process-tree termination, and whole-tree exit observation.
 
 ```text
-fixed tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product process
+configured tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product process
   foreground <- final product outcome
   background -> ctx.jobs / dsh-tool-jobs -> Job id / state / notice / controls
   both -> provider disposal -> dsh-subprocess -> whole-tree exit
@@ -34,7 +34,7 @@ fixed tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product
 
 ## Codex provider
 
-`@deepseek-ai/dsh-subagent-codex` registers the fixed `codex` provider and starts `codex app-server --stdio` from `PATH`. Its public configuration contains an explicit `env` overlay, a positive finite `disposeGraceMs` no greater than the repository's shared `MAX_TIMER_DELAY_MS`, and a three-value native `permissionMode` that defaults to `never`. Installation, login, `CODEX_HOME`, model selection, base URL, and product-session settings remain native Codex or deployment responsibilities; the selected mode owns only the thread approval/reviewer/sandbox fields described by the non-interactive permissions decision.
+`@deepseek-ai/dsh-subagent-codex` registers a Profile-selected provider name that defaults to `codex` and starts `codex app-server --stdio` from `PATH`. Its public configuration contains a non-empty `providerName`, an explicit `env` overlay, a positive finite `disposeGraceMs` no greater than the repository's shared `MAX_TIMER_DELAY_MS`, and a three-value native `permissionMode` that defaults to `never`. Each named instance retains those resolved values for its own runs. Installation, login, `CODEX_HOME`, model selection, base URL, and product-session settings remain native Codex or deployment responsibilities; the selected mode owns only the thread approval/reviewer/sandbox fields described by the non-interactive permissions decision.
 
 Before publication, the provider validates a non-empty text-only task, starts the managed app-server in the parent workspace, completes `initialize` → `initialized`, maps the resolved mode into official `thread/start` fields, and creates an `ephemeral: true` thread. The fixed app-server argv contains no mode or task text. The published run owns exactly one `turn/start`; its thread and turn ids remain private and are never persisted in the parent Session.
 
@@ -48,9 +48,9 @@ Codex 0.147.0 speaks the Responses protocol, while DeepSeek's public OpenAI-comp
 
 ## Claude Code provider
 
-`@deepseek-ai/dsh-subagent-claude-code` registers the fixed `claude-code` provider and invokes `@anthropic-ai/claude-agent-sdk@0.3.220`. Before each run, the provider resolves the fixed `claude` name through the host subprocess execution world and passes that exact path as `pathToClaudeCodeExecutable`; the SDK therefore uses the native product that launched DSH rather than selecting its platform `optionalDependency`. A Windows `.cmd` or `.bat` path crosses `cmd.exe /v:off` as a quoted per-spawn environment expansion, so percent, ampersand, and exclamation path components remain data without changing the shared subprocess contract. The provider uses the official `query()` entrypoint and passes the SDK's `spawnClaudeCodeProcess` arguments, cwd, environment, and forwarded signal to `dsh-subprocess`; its private `SpawnedProcess` adapter exposes only the stream, event, kill, and exit facts the SDK requires.
+`@deepseek-ai/dsh-subagent-claude-code` registers a Profile-selected provider name that defaults to `claude-code` and invokes `@anthropic-ai/claude-agent-sdk@0.3.220`. Before each run, the provider resolves the fixed `claude` executable name through the host subprocess execution world and passes that exact path as `pathToClaudeCodeExecutable`; the SDK therefore uses the native product that launched DSH rather than selecting its platform `optionalDependency`. A Windows `.cmd` or `.bat` path crosses `cmd.exe /v:off` as a quoted per-spawn environment expansion, so percent, ampersand, and exclamation path components remain data without changing the shared subprocess contract. The provider uses the official `query()` entrypoint and passes the SDK's `spawnClaudeCodeProcess` arguments, cwd, environment, and forwarded signal to `dsh-subprocess`; its private `SpawnedProcess` adapter exposes only the stream, event, kill, and exit facts the SDK requires.
 
-The public configuration contains an explicit `env` overlay, a positive finite `disposeGraceMs` no greater than the repository's shared `MAX_TIMER_DELAY_MS`, and a five-value native `permissionMode` that defaults to `dontAsk`. Each run creates its own `AbortController`, sets `persistSession: false`, disables `AskUserQuestion`, and passes the resolved mode to the SDK; only `bypassPermissions` receives the SDK's explicit dangerous confirmation. The provider deliberately omits `settingSources`, so the SDK reads the host's normal user, project, and local Claude settings relative to the parent Session cwd. It neither copies nor filters those settings and does not create or modify login state. Remaining permission prompts are denied, MCP elicitation is declined, and blocking dialogs fail closed instead of waiting for a user interface the provider does not own.
+The public configuration contains a non-empty `providerName`, an explicit `env` overlay, a positive finite `disposeGraceMs` no greater than the repository's shared `MAX_TIMER_DELAY_MS`, and a five-value native `permissionMode` that defaults to `dontAsk`. Each named instance retains those resolved values for its own runs. Each run creates its own `AbortController`, sets `persistSession: false`, disables `AskUserQuestion`, and passes the resolved mode to the SDK; only `bypassPermissions` receives the SDK's explicit dangerous confirmation. The provider deliberately omits `settingSources`, so the SDK reads the host's normal user, project, and local Claude settings relative to the parent Session cwd. It neither copies nor filters those settings and does not create or modify login state. Remaining permission prompts are denied, MCP elicitation is declined, and blocking dialogs fail closed instead of waiting for a user interface the provider does not own.
 
 The provider publishes only after both the SDK `Query` and a live managed CLI handle exist. It consumes the complete SDK stream and completes only when a `result` message has `subtype: "success"`, `is_error: false`, and a nonblank `result`, and the iterator then ends normally. Every other result remains `error`, but its bounded diagnostic preserves the four exact SDK error subtypes, fixed categories for invalid success and missing result, a safe `unknown` fallback, the current `query-start`, `query-run`, `process`, or `teardown` stage, and any observed exit code and signal. A contributing permission decision follows that structured failure line. SDK turn, budget, and structured-output limits are not token-window facts, and the SDK exposes no native refusal terminal, so this provider produces neither `max-tokens` nor `refusal`. Local cancellation wins and becomes `aborted` without either diagnostic fact.
 
@@ -60,7 +60,7 @@ The credentialed Claude Code e2e uses the official DeepSeek Claude Code contract
 
 ## Distribution and evidence
 
-Each product owns branch-complete package tests, a required keyless real-product spec, a Loader composition e2e, and a credentialed DeepSeek e2e. The keyless product tier uses the exact official distribution under test, a non-empty fake product key, an isolated temporary workspace and product home, and a loopback fixed-answer model. Missing product requests, wrong authentication, altered task text, a non-exact answer, a skipped real product, or a surviving managed handle fails the required test. The Loader tier boots the README-shaped explicit Profile configuration, verifies both fixed one-shot tools expose optional background scheduling alongside generic Job controls, and starts neither product process. The credentialed tier starts the same production provider and real product with a runtime-only key, requires a unique nonce from the fixed official DeepSeek service, and proves quiescence again; it self-skips only when a local operator supplied no key, while trusted CI preflights the secret.
+Each product owns branch-complete package tests, a required keyless real-product spec, a Loader composition e2e, and a credentialed DeepSeek e2e. The keyless product tier uses the exact official distribution under test, a non-empty fake product key, an isolated temporary workspace and product home, and a loopback fixed-answer model. Missing product requests, wrong authentication, altered task text, a non-exact answer, a skipped real product, or a surviving managed handle fails the required test. The Codex Loader fixture exposes two named Codex instances and tools; the Claude Code Loader fixture exposes the default Codex tool plus two named Claude Code instances and tools. Both fixtures include generic Job controls and start neither product process. The credentialed tier starts the same production provider and real product with a runtime-only key, requires a unique nonce from the fixed official DeepSeek service, and proves quiescence again; it self-skips only when a local operator supplied no key, while trusted CI preflights the secret.
 
 The Codex evidence pins `@openai/codex@0.147.0` and `codex-cli 0.147.0`. Generated schema evidence and package tests pin all sixteen error-info variants, HTTP status, six stages, process outcomes, stop-reason mapping, unknown fallback, sanitization, permission ordering, cancellation, concurrency, and cleanup aggregation. Its real-product spec observes the exact Bearer key, original task, byte-exact final answer, thread-level `never` overriding ambient `on-request`, automatic-review startup, unattended command rejection with safe diagnostic and no file side effect, a real `internalServerError`, explicit dangerous-bypass writing in suite-owned temporary storage, local cancellation, process/protocol failure, and whole-tree exit. Production still supplies `codex` on `PATH`.
 
@@ -78,7 +78,7 @@ The project owner's distribution authorization is scoped to the official `@anthr
 
 **A shared product-process helper package.** The existing subagent and subprocess seams already own every shared task, result, environment, and process-tree concern. A new helper would duplicate ownership without deleting either private product adapter, so each adapter calls the existing seams directly.
 
-**A model-visible product selector.** Product availability and authentication are deployment facts. Two fixed tools keep each schema and provider binding explicit and avoid adding dynamic selection state to the common service.
+**A model-visible product selector.** Product availability, instance configuration, and authentication are deployment facts. Profile-bound tools keep each schema and provider binding explicit and avoid adding dynamic selection state to the common service.
 
 **Product doubles as required evidence.** Doubles cover exhaustive private protocol branches but do not prove package exports, official distributions, authentication, or real process behavior. Required evidence drives each official product against a loopback model fixture.
 
@@ -88,7 +88,7 @@ The project owner's distribution authorization is scoped to the official `@anthr
 
 ## Consequences
 
-Users delegate through two stable one-shot tools backed by the official product integrations. Explicit Profile installation and host-plane provider placement are owned by the [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md); per-Preset tool exposure and foreground-default optional Job scheduling are owned by the [product one-shot background decision](2026-08-12-product-subagent-one-shot-background-tasks.md). This note's provider lifecycle keeps native settings and behavior while shared services retain the sole ownership of job settlement and process-tree quiescence.
+Users delegate through Profile-configured one-shot tools backed by the official product integrations. Explicit Profile installation and host-plane provider placement are owned by the [production-install exclusion decision](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md); named instance identity and tool binding are owned by the [named-instance decision](2026-08-18-product-subagent-named-instances.md); per-Preset tool exposure and foreground-default optional Job scheduling are owned by the [product one-shot background decision](2026-08-12-product-subagent-one-shot-background-tasks.md). This note's provider lifecycle keeps native settings and behavior while shared services retain the sole ownership of job settlement and process-tree quiescence.
 
 Every delegation pays for a fresh product process and independent model context. Successful product payload remains final assistant text; a failed product run may separately expose the shared safe diagnostic containing provider-owned permission facts or version-pinned structured failure facts. Background scheduling additionally exposes generic Job ids, status, completion notices, and collection or cancellation results. Product-native configuration makes behavior depend on the deployment's installed product, account state, workspace settings, and selected Provider mode. Credentialed e2e runs also spend external API quota and depend on the official DeepSeek endpoint; deterministic protocol, failure, cancellation, and approval coverage remains in the keyless tier. The providers do not resume sessions, stream progress, accept new human interaction, roll back tool or file side effects, or impose a wall-clock timeout.
 

.agents/notes/implemented/feature/2026-08-04-claude-code-and-codex-subagent-backends.zh.md

@@ -12,12 +12,12 @@ Status: implemented
 
 ## 决策
 
-harness 交付两个同级的一次性提供方包：`codex` 与 `claude-code`。本说明负责它们的产品协议、结果映射和进程生命周期；[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)负责显式 Profile 安装与 host plane（宿主平面）放置，[产品一次性后台任务决策](2026-08-12-product-subagent-one-shot-background-tasks.md)负责模型可见的调度选择，[非交互权限决策](2026-08-15-product-subagent-noninteractive-permissions.md)负责各产品提供方的 Profile 模式选择与安全权限决定，[结构化失败事实决策](2026-08-18-product-subagent-failure-facts.md)则负责通过同一诊断公开锁定产品版本的类别、生命周期阶段与进程结果。加载任一提供方都不会启动产品进程，而且每个工具只接受独立文本任务；产品选择仍属于部署配置。
+harness 交付两个同级的一次性提供方包，其默认注册名称分别为 `codex` 与 `claude-code`。本说明负责它们的产品协议、结果映射和进程生命周期；[命名实例决策](2026-08-18-product-subagent-named-instances.md)负责 Profile 选择的提供方身份与静态工具绑定，[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)负责显式 Profile 安装与 host plane（宿主平面）放置，[产品一次性后台任务决策](2026-08-12-product-subagent-one-shot-background-tasks.md)负责模型可见的调度选择，[非交互权限决策](2026-08-15-product-subagent-noninteractive-permissions.md)负责各产品提供方的 Profile 模式选择与安全权限决定，[结构化失败事实决策](2026-08-18-product-subagent-failure-facts.md)则负责通过同一诊断公开锁定产品版本的类别、生命周期阶段与进程结果。两个包都接受多个命名实例。加载任一提供方都不会启动产品进程，而且每个工具只接受独立文本任务；产品与实例选择仍属于部署配置。
 
 这两个提供方都报告 `inheritsParentContext: false`，不声明任何可选的启动能力，并传递父会话 cwd，但不会复制父级对话。文档所示的工具使用 `backgroundMode: 'one-shot'` 与 `maxDepth: 'provider-managed'`：消费方默认在前台收集结果，也可把同一次运行放入通用 Job 运行时，而递归策略仍由进程外产品负责。每次调用都会创建一个全新的产品进程和一次不可续接的产品对话。`ctx.subagents` 负责具名请求解析与成对生命周期事件；`dsh-tool-subagent` 负责模型可见的调度以及前台与 Job 适配；`ctx.jobs` 和 `dsh-tool-jobs` 负责 Job id、状态、输出、控制、通知与父级 owner 取消；各产品提供方负责原生结果映射，`dsh-subprocess` 则负责凭证清洗、进程树终止以及整棵进程树的退出观测。
 
 ```text
-fixed tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product process
+configured tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product process
   foreground <- final product outcome
   background -> ctx.jobs / dsh-tool-jobs -> Job id / state / notice / controls
   both -> provider disposal -> dsh-subprocess -> whole-tree exit
@@ -34,7 +34,7 @@ fixed tool -> dsh-tool-subagent -> ctx.subagents -> product provider -> product
 
 ## Codex 提供方
 
-`@deepseek-ai/dsh-subagent-codex` 注册固定的 `codex` 提供方，并启动 `codex app-server --stdio`，该命令从 `PATH` 解析。其公开配置包含显式的 `env` 覆盖项、须为正有限值且不得大于仓库共享 `MAX_TIMER_DELAY_MS` 的 `disposeGraceMs`，以及默认使用 `never` 的三值原生 `permissionMode`。安装、登录、`CODEX_HOME`、模型选择、基础 URL 和产品会话设置仍由 Codex 原生机制或部署环境负责；所选模式只拥有非交互权限决策中描述的线程 approval／reviewer／sandbox 字段。
+`@deepseek-ai/dsh-subagent-codex` 注册由 Profile 选择、默认值为 `codex` 的提供方名称，并启动 `codex app-server --stdio`，该命令从 `PATH` 解析。其公开配置包含非空的 `providerName`、显式的 `env` 覆盖项、须为正有限值且不得大于仓库共享 `MAX_TIMER_DELAY_MS` 的 `disposeGraceMs`，以及默认使用 `never` 的三值原生 `permissionMode`。每个命名实例会为自己的运行保留这些已解析值。安装、登录、`CODEX_HOME`、模型选择、基础 URL 和产品会话设置仍由 Codex 原生机制或部署环境负责；所选模式只拥有非交互权限决策中描述的线程 approval／reviewer／sandbox 字段。
 
 发布前，提供方会验证非空的纯文本任务，在父级工作区中启动受管的 app-server，完成 `initialize` → `initialized` 握手，把已解析模式映射为官方 `thread/start` 字段，并创建一个 `ephemeral: true` 线程。固定 app-server argv 不包含模式或任务文本。已发布的运行只拥有一次 `turn/start`；其线程 ID 与轮次 ID 保持私有，绝不会持久化到父会话。
 
@@ -48,9 +48,9 @@ Codex 0.147.0 使用 Responses 协议，而 DeepSeek 的公开 OpenAI 兼容端
 
 ## Claude Code 提供方
 
-`@deepseek-ai/dsh-subagent-claude-code` 注册固定的 `claude-code` 提供方，并调用 `@anthropic-ai/claude-agent-sdk@0.3.220`。每次运行前，提供方经宿主 subprocess 执行世界解析固定名称 `claude`，并把准确路径作为 `pathToClaudeCodeExecutable` 交给 SDK；SDK 因此使用启动 DSH 的原生产品，而不是选择自身的 platform `optionalDependency`。Windows `.cmd` 或 `.bat` 路径会作为带引号、仅供本次 spawn 使用的环境展开值穿过 `cmd.exe /v:off`，因此路径中的百分号、与号和感叹号仍只是数据，且无需改变共享子进程约定。提供方使用官方 `query()` 入口点，并将 SDK 的 `spawnClaudeCodeProcess` 参数、cwd、环境和转发的信号交给 `dsh-subprocess`；其私有 `SpawnedProcess` 适配器只公开 SDK 所需的流、事件、终止和退出事实。
+`@deepseek-ai/dsh-subagent-claude-code` 注册由 Profile 选择、默认值为 `claude-code` 的提供方名称，并调用 `@anthropic-ai/claude-agent-sdk@0.3.220`。每次运行前，提供方经宿主 subprocess 执行世界解析固定的 `claude` 可执行文件名称，并把准确路径作为 `pathToClaudeCodeExecutable` 交给 SDK；SDK 因此使用启动 DSH 的原生产品，而不是选择自身的 platform `optionalDependency`。Windows `.cmd` 或 `.bat` 路径会作为带引号、仅供本次 spawn 使用的环境展开值穿过 `cmd.exe /v:off`，因此路径中的百分号、与号和感叹号仍只是数据，且无需改变共享子进程约定。提供方使用官方 `query()` 入口点，并将 SDK 的 `spawnClaudeCodeProcess` 参数、cwd、环境和转发的信号交给 `dsh-subprocess`；其私有 `SpawnedProcess` 适配器只公开 SDK 所需的流、事件、终止和退出事实。
 
-公开配置包含显式的 `env` 覆盖项、须为正有限值且不得大于仓库共享 `MAX_TIMER_DELAY_MS` 的 `disposeGraceMs`，以及默认使用 `dontAsk` 的五值原生 `permissionMode`。每次运行都会创建自己的 `AbortController`，设置 `persistSession: false`、禁用 `AskUserQuestion`，并把已解析模式传给 SDK；只有 `bypassPermissions` 会取得 SDK 的显式危险确认。提供方故意省略 `settingSources`，因此 SDK 会相对于父会话 cwd 读取宿主机常规的用户、项目和本地 Claude 设置。它既不复制也不过滤这些设置，也不会创建或修改登录状态。其余权限提示会被拒绝，MCP elicitation 会被拒绝，阻塞对话会快速失败，而不会等待本提供方不负责的用户界面。
+公开配置包含非空的 `providerName`、显式的 `env` 覆盖项、须为正有限值且不得大于仓库共享 `MAX_TIMER_DELAY_MS` 的 `disposeGraceMs`，以及默认使用 `dontAsk` 的五值原生 `permissionMode`。每个命名实例会为自己的运行保留这些已解析值。每次运行都会创建自己的 `AbortController`，设置 `persistSession: false`、禁用 `AskUserQuestion`，并把已解析模式传给 SDK；只有 `bypassPermissions` 会取得 SDK 的显式危险确认。提供方故意省略 `settingSources`，因此 SDK 会相对于父会话 cwd 读取宿主机常规的用户、项目和本地 Claude 设置。它既不复制也不过滤这些设置，也不会创建或修改登录状态。其余权限提示会被拒绝，MCP elicitation 会被拒绝，阻塞对话会快速失败，而不会等待本提供方不负责的用户界面。
 
 只有在 SDK `Query` 与受管的活动 CLI 句柄都已存在后，提供方才会发布运行。它会消费完整的 SDK 流；只有 `result` 消息具有 `subtype: "success"`、`is_error: false` 和非空白 `result`，且迭代器随后正常结束时，运行才会完成。其他所有结果仍成为 `error`，但其有界诊断会保留四种准确 SDK 错误子类型、标记为错误的成功消息与结果缺失所对应的固定类别、安全的 `unknown` 回退、当前 `query-start`、`query-run`、`process` 或 `teardown` 阶段，以及已观测到的退出码和信号。若权限决定也参与失败，它会跟在结构化失败行之后。SDK 的轮次、预算和结构化输出限制不表示 token 窗口耗尽，而且 SDK 没有原生的拒绝终止状态，因此本提供方不会产生 `max-tokens` 或 `refusal`。本地取消会胜出并成为 `aborted`，且不附带这两类诊断事实。
 
@@ -60,7 +60,7 @@ Codex 0.147.0 使用 Responses 协议，而 DeepSeek 的公开 OpenAI 兼容端
 
 ## 分发与证据
 
-每个产品都负责覆盖所有分支的包测试、一项必跑的无密钥真实产品测试、一项 Loader 组合 e2e 和一项带密钥 DeepSeek e2e。无密钥产品层级使用被测的确切官方发行版、非空的伪产品密钥、隔离的临时工作区与产品主目录，以及能返回固定答案的回环模型。产品请求缺失、身份验证错误、任务文本被改动、答案不完全一致、真实产品被跳过或受管句柄仍存活，都会使这项必跑测试失败。Loader 层级会启动 README 所示的显式 Profile 配置，在同一个上下文中验证两个固定一次性工具会与通用 Job 控制工具一起公开可选后台调度，而且不会启动任何产品进程。带密钥层级会使用仅在运行时提供的密钥启动同一生产提供方与真实产品，要求从固定的 DeepSeek 官方服务取得唯一随机数，并再次证明完全停稳；仅当本地操作者未提供密钥时才会自行跳过，而受信任的 CI 会预检该 secret。
+每个产品都负责覆盖所有分支的包测试、一项必跑的无密钥真实产品测试、一项 Loader 组合 e2e 和一项带密钥 DeepSeek e2e。无密钥产品层级使用被测的确切官方发行版、非空的伪产品密钥、隔离的临时工作区与产品主目录，以及能返回固定答案的回环模型。产品请求缺失、身份验证错误、任务文本被改动、答案不完全一致、真实产品被跳过或受管句柄仍存活，都会使这项必跑测试失败。Codex Loader fixture 会公开两个命名 Codex 实例与工具；Claude Code Loader fixture 会公开默认 Codex 工具以及两个命名 Claude Code 实例与工具。两个 fixture 都包含通用 Job 控制工具，而且不会启动任何产品进程。带密钥层级会使用仅在运行时提供的密钥启动同一生产提供方与真实产品，要求从固定的 DeepSeek 官方服务取得唯一随机数，并再次证明完全停稳；仅当本地操作者未提供密钥时才会自行跳过，而受信任的 CI 会预检该 secret。
 
 Codex 证据锁定 `@openai/codex@0.147.0` 与 `codex-cli 0.147.0`。生成的 schema 证据与包测试固定全部十六种 error-info variant、HTTP status、六个阶段、进程结果、终止原因映射、unknown 回退、脱敏、权限顺序、取消、并发与清理聚合。其真实产品测试会观测确切的 Bearer 密钥、原始任务、逐字节完全一致的最终回答、线程级 `never` 对环境中 `on-request` 的覆盖、自动评审启动、带安全诊断且不产生文件副作用的无人值守命令拒绝、真实 `internalServerError`、测试拥有临时存储中的显式危险绕过写入、本地取消、进程／协议失败以及整棵进程树退出。生产环境仍提供 `codex`，并通过 `PATH` 解析。
 
@@ -78,7 +78,7 @@ Claude Code 证据锁定 Agent SDK 0.3.220，并使用 SDK 按平台分发的 Cl
 
 **共享产品进程辅助包。** 现有 subagent 与子进程 seam 已负责围绕任务、结果、环境和进程树的全部共享职责。新辅助包无法删除任一私有产品适配器，只会造成责任重复，因此每个适配器都会直接调用现有 seam。
 
-**面向模型的产品选择器。** 产品可用性和身份验证属于部署事实。两个固定工具使各自的 schema 与提供方绑定保持明确，也避免在通用服务中添加动态选择状态。
+**面向模型的产品选择器。** 产品可用性、实例配置和身份验证属于部署事实。由 Profile 绑定的工具使各自的 schema 与提供方绑定保持明确，也避免在通用服务中添加动态选择状态。
 
 **以产品替身作为强制证据。** 替身可以穷尽覆盖私有协议分支，但无法证明包导出、官方发行版、身份验证或真实进程行为。强制证据会驱动每个官方产品连接回环模型 fixture。
 
@@ -88,7 +88,7 @@ Claude Code 证据锁定 Agent SDK 0.3.220，并使用 SDK 按平台分发的 Cl
 
 ## 后果
 
-用户通过官方产品集成支持的两个稳定一次性工具进行委派。显式 Profile 安装与 host plane 提供方放置由[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)负责；按 Preset 暴露工具以及默认前台且可选通用 Job 的调度方式由[产品一次性后台任务决策](2026-08-12-product-subagent-one-shot-background-tasks.md)负责。本说明规定的提供方生命周期会保留原生设置与行为，而共享服务继续独占作业结算与进程树完全停稳的责任。
+用户通过由 Profile 配置、并由官方产品集成支持的一次性工具进行委派。显式 Profile 安装与 host plane 提供方放置由[生产安装排除决策](../simplification/2026-08-12-production-dsh-excludes-product-subagent-providers.md)负责；命名实例身份与工具绑定由[命名实例决策](2026-08-18-product-subagent-named-instances.md)负责；按 Preset 暴露工具以及默认前台且可选通用 Job 的调度方式由[产品一次性后台任务决策](2026-08-12-product-subagent-one-shot-background-tasks.md)负责。本说明规定的提供方生命周期会保留原生设置与行为，而共享服务继续独占作业结算与进程树完全停稳的责任。
 
 每次委派都要承担新建产品进程和独立模型上下文的开销。成功的产品载荷仍只有最终 assistant 文本；失败的产品运行可以另行公开共享安全诊断，其中包含由提供方拥有的权限事实，或锁定版本产品提供的结构化失败事实。后台调度还会额外公开通用 Job id、状态、完成通知以及收集或取消结果。产品原生配置使行为取决于部署环境中安装的产品、账户状态、工作区设置和所选提供方模式。带密钥 e2e 运行还会消耗外部 API 配额，并依赖 DeepSeek 官方端点；对协议、失败、取消与审批的确定性覆盖仍由无密钥层级承担。提供方不会恢复会话、以流式方式传送进度、接受新的人工交互、回滚工具或文件副作用，也不会施加按实际经过时间触发的超时。
 

.agents/notes/implemented/feature/2026-08-12-product-subagent-one-shot-background-tasks.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-12-product-subagent-one-shot-background-tasks.md
-2026-08-12-product-subagent-one-shot-background-tasks.md: 248bb943f8ee46a7050c373b6b7c3f7dec65d566
-2026-08-12-product-subagent-one-shot-background-tasks.zh.md: d6867a97561e7efbe2b152b6c45991553393b4e7
+2026-08-12-product-subagent-one-shot-background-tasks.md: 5e9522f6fac6eadb874ba2d1d4f45100f962b9e2
+2026-08-12-product-subagent-one-shot-background-tasks.zh.md: 9685701cbe07df226357e9830a875e3928ae039d

.agents/notes/implemented/feature/2026-08-12-product-subagent-one-shot-background-tasks.md

@@ -12,7 +12,9 @@ Exposing background execution must not add a product session, product-specific j
 
 ## Decision
 
-Production `dsh` does not install the optional product providers. A Profile that opts in installs and mounts `dsh-subagent-codex`, `dsh-subagent-claude-code`, or both once on the host plane. The `standard`, `code`, and `cordis` Agent Presets configure the corresponding dormant tool rows with `backgroundMode: one-shot`; removing a row's `disabled` field exposes the existing optional `run_in_background` argument to agents composed from that preset. Omission or `false` waits in the foreground; explicit `true` returns a parent-owned Job id after synchronous Job preflight and registration, without waiting for provider startup or completion.
+Production `dsh` does not install the optional product providers. A Profile that opts in installs the needed `dsh-subagent-codex` or `dsh-subagent-claude-code` packages and mounts the required provider instances on the host plane. The `standard`, `code`, and `cordis` Agent Presets configure the corresponding dormant tool rows with `backgroundMode: one-shot`; removing a row's `disabled` field exposes the existing optional `run_in_background` argument to agents composed from that preset. Omission or `false` waits in the foreground; explicit `true` returns a parent-owned Job id after synchronous Job preflight and registration, without waiting for provider startup or completion.
+
+The [named-instance decision](2026-08-18-product-subagent-named-instances.md) allows multiple rows for either product. Each additional host provider row has its own `providerName`, and each exposed preset tool row binds that exact name through `provider` while keeping a unique `toolName`; the foreground/background scheduling choice does not constrain the number of instances.
 
 The [generic one-shot background adapter](2026-07-08-background-subagent-tasks.md) owns background registration and settlement. It starts the same [`SubagentRun`](2026-06-21-subagent-capability-seam.md), uses a Job-owned cancellation signal across provider startup and execution, waits for `run.result` and `run.dispose()`, maps the terminal result and optional safe diagnostic into the Job, and lets `job_output`, `job_list`, `job_kill`, and the existing completion notice expose that state. The [product provider decision](2026-08-04-claude-code-and-codex-subagent-backends.md) continues to own native protocols, answer selection, local cancellation, and process-tree quiescence; the [non-interactive permissions decision](2026-08-15-product-subagent-noninteractive-permissions.md) owns each product Provider's Profile configuration and diagnostic production.
 
@@ -33,7 +35,7 @@ product tool call
 
 | Fact or resource | Owner | Product-tool responsibility | Observable result |
 | --- | --- | --- | --- |
-| Product provider installation and registration | Explicit Profile | Install the optional provider package and mount it once on the host plane | The provider name is available without adding its package to every production `dsh` install |
+| Product provider installation and registration | Explicit Profile | Install the optional provider package and mount the required named instances on the host plane | The provider names are available without adding the package to every production `dsh` install |
 | Product selection and exposure | Agent Preset | Bind one fixed tool name to one fixed provider | Enabling one row exposes only that product tool |
 | Foreground or background choice | `dsh-tool-subagent` | Resolve `run_in_background` under `one-shot` policy | Omission is foreground; explicit `true` returns a Job id |
 | Job id, state, output, cancellation, and notice | `ctx.jobs` and `dsh-tool-jobs` | Register and present the existing one-shot run | Generic job tools collect or stop the run for the exact parent |
@@ -41,7 +43,7 @@ product tool call
 
 ## Published composition
 
-The production base keeps both optional product providers out of its dependency closure. An opting-in Profile installs and mounts either or both providers once on the host plane. Each full preset keeps both product-tool rows disabled and contributes the generic Job controls to its own agent scope, while the base host owns the shared Job registry. A user copies a preset and removes `disabled` from the matching product rows after the Profile provider is present; no product process starts during composition.
+The production base keeps both optional product providers out of its dependency closure. An opting-in Profile installs the needed packages and mounts the required provider instances on the host plane. Each full preset keeps both product-tool rows disabled and contributes the generic Job controls to its own agent scope, while the base host owns the shared Job registry. A user copies a preset and removes `disabled` from the matching product rows after the Profile providers are present; no product process starts during composition.
 
 A standalone custom composition that enables one-shot background execution must provide the product provider plus the complete generic Job capability: `dsh-jobs-local` as the Job provider and `dsh-tool-jobs` as the model-facing consumer. A Profile based on `dsh-base` already has the Job capability and adds only the optional product provider before enabling the preset tool row. A product tool without the Job runtime can still execute in the foreground, but an explicit background request fails the existing Job preflight instead of publishing an uncollectable id.
 

.agents/notes/implemented/feature/2026-08-12-product-subagent-one-shot-background-tasks.zh.md

@@ -12,7 +12,9 @@ Codex 与 Claude Code 提供方已经能够运行一项自包含任务并返回
 
 ## 决策
 
-生产 `dsh` 不安装可选产品提供方。选择启用产品集成的 Profile 会安装 `dsh-subagent-codex`、`dsh-subagent-claude-code` 或两者，并在 host plane（宿主平面）各挂载一次。`standard`、`code` 与 `cordis` Agent Preset 使用 `backgroundMode: one-shot` 配置相应的休眠工具行；删除某一行的 `disabled` 字段后，现有可选参数 `run_in_background` 会向由该 preset 组装的 agent 公开。省略该参数或传入 `false` 时会在前台等待；显式传入 `true` 时会在同步完成 Job 预检与登记后返回由父级拥有的 Job id，而不会等待提供方启动或完成。
+生产 `dsh` 不安装可选产品提供方。选择启用产品集成的 Profile 会安装所需的 `dsh-subagent-codex` 或 `dsh-subagent-claude-code` 包，并在 host plane（宿主平面）挂载所需的提供方实例。`standard`、`code` 与 `cordis` Agent Preset 使用 `backgroundMode: one-shot` 配置相应的休眠工具行；删除某一行的 `disabled` 字段后，现有可选参数 `run_in_background` 会向由该 preset 组装的 agent 公开。省略该参数或传入 `false` 时会在前台等待；显式传入 `true` 时会在同步完成 Job 预检与登记后返回由父级拥有的 Job id，而不会等待提供方启动或完成。
+
+[命名实例决策](2026-08-18-product-subagent-named-instances.md)允许两个产品分别拥有多个配置项。每个新增宿主提供方配置项都有独立的 `providerName`，每个公开的 preset 工具配置项都通过 `provider` 绑定该名称并保持唯一的 `toolName`；前台或后台调度选择不会限制实例数量。
 
 [通用 one-shot 后台适配器](2026-07-08-background-subagent-tasks.md)负责后台登记与结算。它会启动同一个 [`SubagentRun`](2026-06-21-subagent-capability-seam.md)，让 Job 自有的取消信号覆盖提供方启动与执行，等待 `run.result` 和 `run.dispose()`，把终态结果与可选安全诊断映射进 Job，并由 `job_output`、`job_list`、`job_kill` 与现有完成通知公开该状态。[产品提供方决策](2026-08-04-claude-code-and-codex-subagent-backends.md)继续负责原生协议、答案选择、本地取消与进程树完全停稳；[非交互权限决策](2026-08-15-product-subagent-noninteractive-permissions.md)负责各产品提供方的 Profile 配置与诊断生产。
 
@@ -33,7 +35,7 @@ product tool call
 
 | 事实或资源 | 责任方 | 产品工具职责 | 可观察结果 |
 | --- | --- | --- | --- |
-| 产品提供方安装与登记 | 显式 Profile | 安装可选提供方包，并在 host plane 挂载一次 | 提供方名称可用，但不会让每次生产 `dsh` 安装都包含该包 |
+| 产品提供方安装与登记 | 显式 Profile | 安装可选提供方包，并在 host plane 挂载所需的命名实例 | 提供方名称可用，但不会让每次生产 `dsh` 安装都包含该包 |
 | 产品选择与公开 | Agent Preset | 把一个固定工具名绑定到一个固定提供方 | 启用一行只会公开对应产品工具 |
 | 前台或后台选择 | `dsh-tool-subagent` | 按 `one-shot` 策略解析 `run_in_background` | 省略参数时在前台运行；显式传入 `true` 时返回 Job id |
 | Job id、状态、输出、取消与通知 | `ctx.jobs` 与 `dsh-tool-jobs` | 登记并展示现有 one-shot 运行 | 通用作业工具为准确父级收集或停止运行 |
@@ -41,7 +43,7 @@ product tool call
 
 ## 发布组装
 
-生产 base 不让两个可选产品提供方进入依赖闭包。选择启用产品集成的 Profile 会在 host plane 安装并挂载任一或两个提供方。每个完整 preset 让两个产品工具行保持禁用，并把通用 Job 控制工具贡献到自身 agent 作用域；base host 负责共享 Job 注册表。Profile 提供方存在后，用户复制一个 preset，再从对应产品行删除 `disabled`；组装期间不会启动产品进程。
+生产 base 不让两个可选产品提供方进入依赖闭包。选择启用产品集成的 Profile 会安装所需包，并在 host plane 挂载所需的提供方实例。每个完整 preset 让两个产品工具行保持禁用，并把通用 Job 控制工具贡献到自身 agent 作用域；base host 负责共享 Job 注册表。Profile 提供方实例存在后，用户复制一个 preset，再从对应产品行删除 `disabled`；组装期间不会启动产品进程。
 
 独立自定义组装若启用 one-shot 后台执行，就必须同时提供产品提供方与完整通用 Job 能力：由 `dsh-jobs-local` 充当 Job 提供方，由 `dsh-tool-jobs` 充当面向模型的消费方。基于 `dsh-base` 的 Profile 已具备 Job 能力，只需在启用 preset 工具行前新增可选产品提供方。没有 Job 运行时的产品工具仍可在前台执行，但显式后台请求会在现有 Job 预检中失败，不会发布无法收集的 id。
 

.agents/notes/implemented/feature/2026-08-18-product-subagent-named-instances.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-18-product-subagent-named-instances.md
+2026-08-18-product-subagent-named-instances.md: 759d3941ff8404138954c409f0fd4949e357200e
+2026-08-18-product-subagent-named-instances.zh.md: 6faf0e70f639cbc6528e27b800b8e5f99f0d6c86

.agents/notes/implemented/feature/2026-08-18-product-subagent-named-instances.md

@@ -0,0 +1,48 @@
+# Agent Note: Product subagent named instances
+
+Status: implemented
+
+English | [中文](2026-08-18-product-subagent-named-instances.zh.md)
+
+## Problem
+
+A Profile can mount one Cordis plugin package in multiple rows, but the Codex and Claude Code product providers previously registered every row under one fixed product name. A second row therefore failed as a duplicate before its distinct permission mode, environment, or process-release settings could become usable. Deriving an implicit name from those settings would create a second identity rule, while choosing a provider during a tool call would let model input select deployment authority.
+
+The existing subagent registry already owns unique provider names, reversible registration, lifecycle events, and holder-owned published runs. The existing `dsh-tool-subagent` configuration already binds one provider name to one model-visible tool name. Product providers need to expose the missing Profile-owned identity without adding another registry or selection protocol.
+
+## Decision
+
+Each product provider Config owns a non-empty `providerName`; the defaults remain `codex` and `claude-code`. The resolved name is fixed when the plugin row loads and becomes the Provider object's `name`; registration, lookup, lifecycle events, run logs, and HMR removal therefore use the same value. Each mounted row retains its own `permissionMode`, `env`, `disposeGraceMs`, and run resources.
+
+Profiles may mount multiple Codex or Claude Code rows when every row uses a distinct `providerName`. Each `dsh-tool-subagent` row continues to bind its existing `provider` field to that exact name and exposes an independently configured `toolName`. Tool calls carry no provider selector, alias, or permission input. A duplicate provider name fails through the existing `DUPLICATE_PROVIDER` path and leaves the first registration intact.
+
+Removing one provider row blocks new starts and removes only tools bound to that name. Runs already published by the removed instance remain owned by their holders and settle or dispose independently. Sibling instances remain registered and keep their own environment, native permission mode, cancellation controller, product process, and cleanup grace.
+
+### Ownership and lifecycle
+
+| Fact or operation | Owner | Result |
+| --- | --- | --- |
+| Provider instance name | Product Provider Config | One immutable registry name per mounted row, with the existing default when omitted |
+| Name uniqueness and lifecycle events | `ctx.subagents` | Duplicate registration fails; disposal removes only the matching name |
+| Model-visible tool name and binding | `dsh-tool-subagent` Config | One static tool resolves one configured provider name |
+| Permission, environment, and process cleanup | One Provider instance | Concurrent runs and sibling instances do not share deployment configuration or run resources |
+
+## Verification
+
+Both product packages pin their default and custom names, empty-name rejection, duplicate rollback, actual-name diagnostics, two concurrent instances with different permission modes, environments, and cleanup grace, cancellation isolation, and removal of one instance while its published run remains valid. The official product loopback tests run two named instances in one Host against separate model fixtures and prove independent unload and process-tree quiescence. Public Loader compositions mount two rows and two distinct tools for each product without starting either product, while keyless ACP snapshots pin the four-tool combined roster and the absence of a dynamic provider parameter.
+
+## Alternatives considered
+
+**Derive names from the product or permission mode.** An implicit suffix would make identity change when deployment settings change and could still collide across equivalent rows. The Profile supplies the identity explicitly.
+
+**Let a tool call choose the provider.** That would make model input select a permission and environment instance. Separate tool rows keep authorization and exposure static in configuration.
+
+**Create a product-instance catalog or alias registry.** The existing subagent registry already owns names, uniqueness, lookup, events, and disposal. Another directory would duplicate state without a distinct consumer.
+
+**Automatically rename duplicate rows.** Silent suffixing would make tool bindings and lifecycle diagnostics depend on load order. Duplicate names continue to fail loudly.
+
+## Consequences
+
+A Profile can expose several Codex and Claude Code tools backed by separate native permission modes and environments while existing configurations continue to resolve `codex` and `claude-code`. Provider and tool names remain independent configuration facts, so changing one requires updating the binding that refers to it.
+
+The design adds no runtime renaming, model-visible selector, generated tool name, persistent instance directory, shared process pool, or compatibility alias. Correct multi-instance configurations require unique provider names and unique tool names; duplicate tool-name waiting remains a separate limitation.

.agents/notes/implemented/feature/2026-08-18-product-subagent-named-instances.zh.md

@@ -0,0 +1,48 @@
+# Agent Note: 产品 subagent 命名实例
+
+Status: implemented
+
+[English](2026-08-18-product-subagent-named-instances.md) | 中文
+
+## 问题
+
+Profile 可以用多个配置项挂载同一个 Cordis 插件包，但 Codex 与 Claude Code 产品提供方此前会把每个配置项都注册到一个固定产品名称下。因此，第二个配置项会在其独立权限模式、环境或进程释放设置可用前因名称重复而失败。根据这些设置隐式派生名称会建立第二套身份规则，而在工具调用期间选择提供方会让模型输入决定部署权限。
+
+现有 subagent 注册表已经拥有提供方名称唯一性、可逆注册、生命周期事件和由持有方拥有的已发布运行。现有 `dsh-tool-subagent` 配置也已经把一个提供方名称绑定到一个模型可见工具名称。产品提供方只需公开缺失的 Profile 所有身份，无需增加另一套注册表或选择协议。
+
+## 决策
+
+每个产品提供方 Config 都拥有非空的 `providerName`；默认值仍分别为 `codex` 与 `claude-code`。插件配置项加载时会固定解析后的名称，并把它作为 Provider 对象的 `name`；注册、查找、生命周期事件、运行日志和 HMR（热模块替换）移除因此使用同一个值。每个已挂载配置项保留自己的 `permissionMode`、`env`、`disposeGraceMs` 和运行资源。
+
+当每个配置项使用不同的 `providerName` 时，Profile 可以挂载多个 Codex 或 Claude Code 配置项。每个 `dsh-tool-subagent` 配置项继续用已有的 `provider` 字段绑定这个准确名称，并公开独立配置的 `toolName`。工具调用不携带提供方选择器、别名或权限输入。重复提供方名称沿用现有 `DUPLICATE_PROVIDER` 路径失败，而且不会替换第一个注册项。
+
+移除一个提供方配置项会阻止新的启动，并且只移除绑定到该名称的工具。该实例已经发布的运行仍由其持有方拥有，并会独立结算或 dispose（资源释放）。兄弟实例继续保持注册，并保留各自的环境、原生权限模式、取消控制器、产品进程和清理宽限期。
+
+### 所有权与生命周期
+
+| 事实或操作 | 责任方 | 结果 |
+| --- | --- | --- |
+| 提供方实例名称 | 产品提供方 Config | 每个已挂载配置项拥有一个不可变注册名称；省略时使用现有默认值 |
+| 名称唯一性与生命周期事件 | `ctx.subagents` | 重复注册失败；资源释放只移除匹配名称 |
+| 模型可见工具名称与绑定 | `dsh-tool-subagent` Config | 一个静态工具解析一个已配置的提供方名称 |
+| 权限、环境与进程清理 | 一个提供方实例 | 并发运行与兄弟实例不共享部署配置或运行资源 |
+
+## 验证
+
+两个产品包测试都会固定默认与自定义名称、空名称拒绝、重复注册回滚、实际名称诊断、使用不同权限模式、环境与清理宽限期的两个并发实例、取消隔离，以及移除一个实例后其已发布运行仍然有效。官方产品回环测试会在同一个 Host 中针对独立模型 fixture（测试前置数据）运行两个命名实例，并证明独立卸载与进程树完全停稳。公共 Loader 组合会为每个产品挂载两个配置项与两个不同工具，而且不启动任一产品；无密钥 ACP 快照固定最终四工具组合，并证明没有动态提供方参数。
+
+## 考虑过的替代方案
+
+**根据产品或权限模式派生名称。** 隐式后缀会让部署设置变化同时改变身份，而且等价配置项之间仍可能冲突。Profile 会显式提供身份。
+
+**让工具调用选择提供方。** 这会让模型输入选择权限与环境实例。独立工具配置项会让授权与公开范围保持静态配置。
+
+**建立产品实例目录或别名注册表。** 现有 subagent 注册表已经拥有名称、唯一性、查找、事件和资源释放。另一套目录没有独立消费方，只会复制状态。
+
+**自动重命名重复配置项。** 静默添加后缀会让工具绑定与生命周期诊断依赖加载顺序。重复名称继续快速失败。
+
+## 结果
+
+Profile 可以公开多个由不同原生权限模式与环境支持的 Codex 与 Claude Code 工具，而现有配置仍会解析为 `codex` 与 `claude-code`。提供方名称与工具名称继续是彼此独立的配置事实，因此修改其中一项时必须同时更新引用它的绑定。
+
+本设计不增加运行时改名、模型可见选择器、自动生成的工具名称、持久实例目录、共享进程池或兼容别名。正确的多实例配置要求提供方名称与工具名称都保持唯一；重复工具名称的等待问题仍是独立限制。

apps/cli/config/agent-presets/cordis/skills/editing-cordis-compositions/SKILL.md

@@ -147,7 +147,9 @@ Copy these disabled templates from a shipped full preset and remove `disabled` o
     maxDepth: provider-managed
 ```
 
-The two rows are independent. Leaving both disabled preserves the copied preset, enabling one exposes only that product tool, and enabling both exposes both. Production `dsh` does not install or mount either optional provider: before enabling a row, the Profile must install the matching `@deepseek-ai/dsh-subagent-codex` or `@deepseek-ai/dsh-subagent-claude-code` package and mount it once on the host plane. A preset cannot provide that host dependency. `backgroundMode: one-shot` keeps omitted or `false` calls in the foreground and lets explicit `run_in_background: true` return a generic Job id. Full presets already carry `tool-jobs`, while the base host carries the job registry; retain both so `job_output`, `job_list`, `job_kill`, cancellation, and completion notices stay available. The host must also provide `codex` or `claude` on `PATH`; the preset does not install, authenticate, select a model for, or probe either product.
+For additional named Codex or Claude Code instances, mount a separate host-plane provider row for each instance with a unique `providerName`, then add a separate preset tool row whose `provider` exactly matches that name and whose `toolName` is also unique. Keep the shipped rows for the default `codex` and `claude-code` names; do not reuse one tool row for several providers or derive either name from permission or environment settings.
+
+The two rows are independent. Leaving both disabled preserves the copied preset, enabling one exposes only that product tool, and enabling both exposes both. Production `dsh` does not install or mount either optional provider: before enabling a row, the Profile must install the matching `@deepseek-ai/dsh-subagent-codex` or `@deepseek-ai/dsh-subagent-claude-code` package and mount the required provider instances on the host plane. A preset cannot provide that host dependency. `backgroundMode: one-shot` keeps omitted or `false` calls in the foreground and lets explicit `run_in_background: true` return a generic Job id. Full presets already carry `tool-jobs`, while the base host carries the job registry; retain both so `job_output`, `job_list`, `job_kill`, cancellation, and completion notices stay available. The host must also provide `codex` or `claude` on `PATH`; the preset does not install, authenticate, select a model for, or probe either product.
 
 ## What not to move into a preset
 

apps/web/index.html

@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="zh-CN">
+<html lang="en">
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />

apps/web/tests/access-confirmation.e2e.ts

@@ -30,8 +30,9 @@ describe('web e2e: Full access confirmation', () => {
     // is temporarily unavailable.
     const executablePath = process.env.DSH_PLAYWRIGHT_EXECUTABLE_PATH
     browser = await chromium.launch(executablePath === undefined ? {} : { executablePath })
-    // Keep the product default Chinese locale: the golden pins the actual
-    // registered dictionary rather than a test-local translation callback.
+    // Keep the Chinese surface via {@link ZH_BROWSER_LOCALE}: the golden pins
+    // the actual registered dictionary rather than a test-local translation
+    // callback.
     page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE })
     tripwire = watchConsole(page)
     await page.goto(scaffold.baseUrl, { waitUntil: 'load' })

apps/web/tests/settings-chrome.e2e.ts

@@ -24,6 +24,8 @@ import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/settings-chrome', import.meta.url))
 const DIALOG_EXPECTED = join(SNAPSHOT_DIR, 'dialog.expected.md')
 const PLUGINS_EXPECTED = join(SNAPSHOT_DIR, 'plugins.expected.md')
+// The English fallback surface: a browser naming no shipped language.
+const DIALOG_EN_EXPECTED = join(SNAPSHOT_DIR, 'dialog-en.expected.md')
 const PLUGIN_ROW_SELECTOR = '[data-plugin-entry$="ui-settings"]'
 const MODE = webSnapshotMode()
 
@@ -398,6 +400,11 @@ describe('web e2e: settings modal and General preferences', () => {
     await page.getByRole('button', { name: '设置', exact: true }).click()
     const zhDialog = page.getByRole('dialog', { name: '设置' })
     await zhDialog.waitFor({ timeout: 10_000 })
+    // The document language follows the active locale in the assembled app, not
+    // only on a directly-mounted plugin. This is a zh browser, so the served
+    // markup's `en` must already have been replaced — asserting it here (rather
+    // than only in an English scenario) is what makes the check discriminating.
+    expect(await page.evaluate(() => document.documentElement.lang)).toBe('zh-CN')
     // The Language selector pill shows the active locale's own name.
     const selector = zhDialog.getByRole('button', { name: '中文' })
     expect(await selector.getAttribute('aria-haspopup')).toBe('menu')
@@ -408,6 +415,8 @@ describe('web e2e: settings modal and General preferences', () => {
     // the rest of the app's copy is intentionally out of this row's scope.)
     const enDialog = page.getByRole('dialog', { name: 'Settings' })
     await enDialog.waitFor({ timeout: 10_000 })
+    // ...and the attribute follows that switch, in the assembled app.
+    await expect.poll(() => page.evaluate(() => document.documentElement.lang), { timeout: 5_000 }).toBe('en')
     expect(await enDialog.getByRole('button', { name: 'General' }).getAttribute('aria-current')).toBe('true')
     await expect.poll(() => enDialog.getByText('Appearance', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
     expect(await page.evaluate(() => localStorage.getItem('dsh.locale'))).toBeNull()
@@ -455,7 +464,9 @@ describe('web e2e: settings modal and General preferences', () => {
 
   it('opens an English browser in English without any stored preference', async () => {
     // A fresh Host home has no locale preference, so its surface follows the
-    // browser rather than the product fallback.
+    // browser. English is also FALLBACK_LOCALE, so this scenario alone cannot
+    // distinguish detection from the default — the zh scenarios above supply
+    // the discriminating half (a Chinese browser must NOT land on the default).
     const fresh = await launchWebScaffold({})
     const enPage = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: 'en-US' })
     const enTripwire = watchConsole(enPage)
@@ -478,8 +489,41 @@ describe('web e2e: settings modal and General preferences', () => {
     }
   }, 90_000)
 
+  it('opens a browser asking for no shipped language in English', async () => {
+    // The product default for "no usable signal": a French browser ships
+    // neither zh nor en, so resolution falls to FALLBACK_LOCALE (en) rather
+    // than to Chinese.
+    const fresh = await launchWebScaffold({})
+    const frPage = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: 'fr-FR' })
+    const frTripwire = watchConsole(frPage)
+    onTestFailed(() => saveFailureShot(frPage, 'web-e2e-settings-unshipped-language'))
+    try {
+      await frPage.goto(fresh.baseUrl, { waitUntil: 'load' })
+      await frPage.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+      expect(await frPage.evaluate(() => localStorage.getItem('dsh.locale'))).toBeNull()
+      await frPage.getByRole('button', { name: 'Settings', exact: true }).click()
+      const dialog = frPage.getByRole('dialog', { name: 'Settings' })
+      await dialog.waitFor({ timeout: 10_000 })
+      await dialog.getByRole('button', { name: 'English' }).waitFor({ timeout: 10_000 })
+      // The markup already ships `en`, so this alone cannot prove the sync ran
+      // — the zh scenario above is the discriminating half. Asserted here too
+      // so a future change that resolves en but writes the wrong tag is caught.
+      expect(await frPage.evaluate(() => document.documentElement.lang)).toBe('en')
+      // Golden of the English fallback dialog — the visible output this change
+      // produces. The zh golden above covers the detected-locale surface, so
+      // the pair pins both directions of the resolution.
+      const snapshot = await captureStableAria(frPage, '[role="dialog"]', fresh.workspaceCwd)
+      await compareOrRefreshGolden(DIALOG_EN_EXPECTED, snapshot, MODE)
+      expect(frTripwire.pageErrors).toEqual([])
+      expect(frTripwire.warnings).toEqual([])
+    } finally {
+      await frPage.close()
+      await fresh.close()
+    }
+  }, 90_000)
+
   it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
     expect(tripwire.warnings).toEqual([])
-    await assertFixtureInventory(SNAPSHOT_DIR, ['dialog.expected.md', 'plugins.expected.md'])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['dialog-en.expected.md', 'dialog.expected.md', 'plugins.expected.md'])
   })
 })

apps/web/tests/snapshots/settings-chrome/dialog-en.expected.md

@@ -0,0 +1,45 @@
+- dialog "Settings":
+  - navigation:
+    - text: Settings
+    - button "General":
+      - img
+      - text: General
+    - button "Models":
+      - img
+      - text: Models
+    - button "Plugins":
+      - img
+      - text: Plugins
+    - button "Agent presets":
+      - img
+      - text: Agent presets
+  - button "Open configuration file"
+  - button "Close":
+    - img
+    - text: Close
+  - text: Agent preset Applies to sessions you start from now on. Running sessions keep the preset they began with.
+  - button "Standard mode":
+    - text: Standard mode
+    - img
+  - text: Permission Choose the default permission mode for new sessions
+  - button "Workspace Write":
+    - text: Workspace Write
+    - img
+  - text: Language
+  - button "English":
+    - text: English
+    - img
+  - text: Appearance
+  - button "Light":
+    - img
+    - text: Light
+  - button "Dark":
+    - img
+    - text: Dark
+  - button "System" [pressed]:
+    - img
+    - text: System
+  - text: Enter behavior while busy Busy only; Cmd/Ctrl+Enter uses the other behavior
+  - button "Queue":
+    - text: Queue
+    - img

apps/web/tests/startup-rpc-budget.e2e.ts

@@ -0,0 +1,54 @@
+// Cold-boot RPC budget. The describe mirror (packages/client/ui-settings) is
+// the one `settings.describe` reader in the browser, so startup describe
+// traffic stays bounded no matter how many client plugins own a preference.
+// A regression here means a consumer bypassed the mirror — grep for
+// `settings.describe(` outside ui-settings' client sources.
+//
+// Zero model calls: the lane only boots chrome, so no replay fixture mounts.
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it } from 'vitest'
+import { launchWebScaffold, watchConsole, type WebScaffold } from './scaffold.ts'
+import { newEnglishPage } from './support.ts'
+
+/**
+ * Both reads are the mirror's: once eagerly at bind time over HTTP, and once
+ * on the first-connection reset — that second read closes the window where a
+ * document commit lands between the eager read and the SSE subscription and
+ * its invalidation is lost. Every settings consumer derives from these two.
+ */
+const DESCRIBE_BUDGET = 2
+
+let scaffold: WebScaffold
+let browser: Browser
+let page: Page
+
+beforeAll(async () => {
+  scaffold = await launchWebScaffold()
+  browser = await chromium.launch()
+})
+
+afterAll(async () => {
+  await page?.close()
+  await browser?.close()
+  await scaffold?.close()
+})
+
+describe('startup RPC budget', () => {
+  it('keeps cold-boot settings.describe at the mirror count', async () => {
+    page = await newEnglishPage(browser)
+    watchConsole(page)
+    const calls: string[] = []
+    page.on('request', (request) => {
+      const url = new URL(request.url())
+      if (url.pathname.startsWith('/api/')) calls.push(url.pathname.slice('/api/'.length))
+    })
+    await page.goto(scaffold.baseUrl)
+    // Boot settles when the workspace picker is interactive; the trailing wait
+    // absorbs the first-connection reset wave the budget must include.
+    await page.getByRole('textbox', { name: 'Choose workspace' }).waitFor({ timeout: 30_000 })
+    await page.waitForTimeout(3000)
+    const describeCount = calls.filter(method => method === 'settings.describe').length
+    expect(describeCount, `startup /api calls:\n${calls.join('\n')}`).toBe(DESCRIBE_BUDGET)
+  })
+})

apps/web/tests/support.ts

@@ -88,9 +88,10 @@ export async function connectFreshWorkspace(page: Page, root: string, name = 'wo
 }
 
 /**
- * {@link connectFreshWorkspace} over the product default Chinese locale: the
- * English helper's anchors assume the locale every other scenario boots, so a
- * scenario that deliberately keeps zh needs the localized picker copy.
+ * {@link connectFreshWorkspace} over a page that advertises
+ * {@link ZH_BROWSER_LOCALE}: the English helper's anchors assume the locale
+ * most other scenarios boot, so a scenario that deliberately keeps zh needs
+ * the localized picker copy.
  * @param page - the browser page under test.
  * @param root - workspace parent directory.
  * @param name - directory created under `root` and connected.

apps/web/tsconfig.json

@@ -24,6 +24,7 @@
   "exclude": [
     "tests/scaffold.ts",
     "tests/scaffold-hermetic.e2e.ts",
+    "tests/startup-rpc-budget.e2e.ts",
     "tests/minimal-preset.snapshot.ts",
     "tests/message-feedback-protocol.snapshot.ts",
     "tests/live-interactions.e2e.ts",

docs/config-catalog.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/config-catalog.md
-config-catalog.md: a78e0af87f88c617d739ad02ee88c63cdca107c4
-config-catalog.zh.md: a70e819b58ae015286b8fcf1224f4f59a2c78758
+config-catalog.md: 127e9bebe677f9d122699d02dedca35002b047af
+config-catalog.zh.md: 547116ef2c279d43c9d07f2c0d59f1e2d8e1abe5

docs/config-catalog.md

@@ -2092,6 +2092,8 @@ Requires: `subagents` · `subprocess`
 ```ts config-catalog
 /** Deployment-owned permission, environment, and process-release settings. */
 export interface Config {
+  /** Provider name on `ctx.subagents` (default `claude-code`). */
+  providerName?: string
   /**
    * Explicit environment entries layered over the subprocess seam's
    * credential-scrubbed parent environment.
@@ -2112,7 +2114,7 @@ export interface Config {
 export type ClaudeCodePermissionMode = typeof CLAUDE_CODE_PERMISSION_MODES[number]
 ```
 
-Source: [`packages/subagent/subagent-claude-code/src/index.ts:36`](../packages/subagent/subagent-claude-code/src/index.ts)
+Source: [`packages/subagent/subagent-claude-code/src/index.ts:38`](../packages/subagent/subagent-claude-code/src/index.ts)
 
 <a id="deepseek-aidsh-subagent-codex"></a>
 
@@ -2123,6 +2125,8 @@ Requires: `subagents` · `subprocess`
 ```ts config-catalog
 /** Deployment-owned permission, environment, and process-release settings. */
 export interface Config {
+  /** Provider name on `ctx.subagents` (default `codex`). */
+  providerName?: string
   /**
    * Explicit environment entries layered over the subprocess seam's
    * credential-scrubbed parent environment.
@@ -2141,7 +2145,7 @@ export type CodexPermissionMode =
   | 'dangerously-bypass-approvals-and-sandbox'
 ```
 
-Source: [`packages/subagent/subagent-codex/src/index.ts:33`](../packages/subagent/subagent-codex/src/index.ts)
+Source: [`packages/subagent/subagent-codex/src/index.ts:35`](../packages/subagent/subagent-codex/src/index.ts)
 
 <a id="deepseek-aidsh-subagent-dsh-sdk"></a>
 

docs/config-catalog.zh.md

@@ -2094,6 +2094,8 @@ export type PermissionPolicy = 'allow' | 'reject'
 ```ts config-catalog
 /** Deployment-owned permission, environment, and process-release settings. */
 export interface Config {
+  /** Provider name on `ctx.subagents` (default `claude-code`). */
+  providerName?: string
   /**
    * Explicit environment entries layered over the subprocess seam's
    * credential-scrubbed parent environment.
@@ -2114,7 +2116,7 @@ export interface Config {
 export type ClaudeCodePermissionMode = typeof CLAUDE_CODE_PERMISSION_MODES[number]
 ```
 
-来源：[`packages/subagent/subagent-claude-code/src/index.ts:36`](../packages/subagent/subagent-claude-code/src/index.ts)
+来源：[`packages/subagent/subagent-claude-code/src/index.ts:38`](../packages/subagent/subagent-claude-code/src/index.ts)
 
 <a id="deepseek-aidsh-subagent-codex"></a>
 
@@ -2125,6 +2127,8 @@ export type ClaudeCodePermissionMode = typeof CLAUDE_CODE_PERMISSION_MODES[numbe
 ```ts config-catalog
 /** Deployment-owned permission, environment, and process-release settings. */
 export interface Config {
+  /** Provider name on `ctx.subagents` (default `codex`). */
+  providerName?: string
   /**
    * Explicit environment entries layered over the subprocess seam's
    * credential-scrubbed parent environment.
@@ -2143,7 +2147,7 @@ export type CodexPermissionMode =
   | 'dangerously-bypass-approvals-and-sandbox'
 ```
 
-来源：[`packages/subagent/subagent-codex/src/index.ts:33`](../packages/subagent/subagent-codex/src/index.ts)
+来源：[`packages/subagent/subagent-codex/src/index.ts:35`](../packages/subagent/subagent-codex/src/index.ts)
 
 <a id="deepseek-aidsh-subagent-dsh-sdk"></a>
 

examples/acp-agent/product-subagent-both.cordis.snapshot.yml

@@ -1,5 +1,5 @@
-# Keyless twin of product-subagent-both.cordis.yml: preserve both product
-# tools while replacing only the external model adapter.
+# Keyless twin of product-subagent-both.cordis.yml: preserve all four named
+# product tools while replacing only the external model adapter.
 - id: base
   name: '@deepseek-ai/cordis-plugin-include'
   config:
@@ -18,25 +18,47 @@
                   models:
                     - id: deepseek-v4-flash
                     - id: deepseek-v4-pro
-          - id: subagent-codex
+          - id: subagent-codex-primary
             name: '@deepseek-ai/dsh-subagent-codex'
             config:
-              permissionMode: approve-for-me
-          - id: subagent-claude-code
+              providerName: codex-primary
+          - id: subagent-codex-secondary
+            name: '@deepseek-ai/dsh-subagent-codex'
+            config:
+              providerName: codex-secondary
+          - id: subagent-claude-primary
+            name: '@deepseek-ai/dsh-subagent-claude-code'
+            config:
+              providerName: claude-primary
+          - id: subagent-claude-secondary
             name: '@deepseek-ai/dsh-subagent-claude-code'
             config:
-              permissionMode: acceptEdits
-          - id: tool-subagent-codex
+              providerName: claude-secondary
+          - id: tool-subagent-codex-primary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-primary
+              toolName: subagent_codex_primary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-codex-secondary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-secondary
+              toolName: subagent_codex_secondary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-claude-primary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: codex
-              toolName: subagent_codex
+              provider: claude-primary
+              toolName: subagent_claude_primary
               backgroundMode: one-shot
               maxDepth: provider-managed
-          - id: tool-subagent-claude-code
+          - id: tool-subagent-claude-secondary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: claude-code
-              toolName: subagent_claude_code
+              provider: claude-secondary
+              toolName: subagent_claude_secondary
               backgroundMode: one-shot
               maxDepth: provider-managed

examples/acp-agent/product-subagent-both.cordis.yml

@@ -1,31 +1,53 @@
-# Add both native product providers and the same independent one-shot tool rows
-# an Agent Preset may contribute. Loading the composition starts neither
-# product; the scenario pins both model-visible schemas.
+# Add two named Codex providers, two named Claude Code providers, and the
+# independent one-shot tool rows an Agent Preset may contribute. Loading the
+# composition starts neither product; the scenario pins all four schemas.
 - id: base
   name: '@deepseek-ai/cordis-plugin-include'
   config:
     path: ./cordis.yml
     patches:
       - insert:
-          - id: subagent-codex
+          - id: subagent-codex-primary
             name: '@deepseek-ai/dsh-subagent-codex'
             config:
-              permissionMode: approve-for-me
-          - id: subagent-claude-code
+              providerName: codex-primary
+          - id: subagent-codex-secondary
+            name: '@deepseek-ai/dsh-subagent-codex'
+            config:
+              providerName: codex-secondary
+          - id: subagent-claude-primary
+            name: '@deepseek-ai/dsh-subagent-claude-code'
+            config:
+              providerName: claude-primary
+          - id: subagent-claude-secondary
             name: '@deepseek-ai/dsh-subagent-claude-code'
             config:
-              permissionMode: acceptEdits
-          - id: tool-subagent-codex
+              providerName: claude-secondary
+          - id: tool-subagent-codex-primary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-primary
+              toolName: subagent_codex_primary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-codex-secondary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-secondary
+              toolName: subagent_codex_secondary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-claude-primary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: codex
-              toolName: subagent_codex
+              provider: claude-primary
+              toolName: subagent_claude_primary
               backgroundMode: one-shot
               maxDepth: provider-managed
-          - id: tool-subagent-claude-code
+          - id: tool-subagent-claude-secondary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: claude-code
-              toolName: subagent_claude_code
+              provider: claude-secondary
+              toolName: subagent_claude_secondary
               backgroundMode: one-shot
               maxDepth: provider-managed

examples/acp-agent/product-subagent-codex.cordis.snapshot.yml

@@ -1,5 +1,5 @@
-# Keyless twin of product-subagent-codex.cordis.yml: keep the same product
-# provider/tool composition and replace only the external model adapter.
+# Keyless twin of product-subagent-codex.cordis.yml: keep both named product
+# providers and tools while replacing only the external model adapter.
 - id: base
   name: '@deepseek-ai/cordis-plugin-include'
   config:
@@ -18,14 +18,25 @@
                   models:
                     - id: deepseek-v4-flash
                     - id: deepseek-v4-pro
-          - id: subagent-codex
+          - id: subagent-codex-primary
             name: '@deepseek-ai/dsh-subagent-codex'
             config:
-              permissionMode: approve-for-me
-          - id: tool-subagent-codex
+              providerName: codex-primary
+          - id: subagent-codex-secondary
+            name: '@deepseek-ai/dsh-subagent-codex'
+            config:
+              providerName: codex-secondary
+          - id: tool-subagent-codex-primary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-primary
+              toolName: subagent_codex_primary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-codex-secondary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: codex
-              toolName: subagent_codex
+              provider: codex-secondary
+              toolName: subagent_codex_secondary
               backgroundMode: one-shot
               maxDepth: provider-managed

examples/acp-agent/product-subagent-codex.cordis.yml

@@ -1,20 +1,31 @@
-# Add the native Codex product provider and its preset-shaped one-shot tool to
-# the real ACP composition. The model is told not to call it; the scenario pins
-# the assembled request schema without starting Codex.
+# Add two named Codex product providers and their preset-shaped one-shot tools
+# to the real ACP composition. The model is told not to call them; the scenario
+# pins both assembled request schemas without starting Codex.
 - id: base
   name: '@deepseek-ai/cordis-plugin-include'
   config:
     path: ./cordis.yml
     patches:
       - insert:
-          - id: subagent-codex
+          - id: subagent-codex-primary
             name: '@deepseek-ai/dsh-subagent-codex'
             config:
-              permissionMode: approve-for-me
-          - id: tool-subagent-codex
+              providerName: codex-primary
+          - id: subagent-codex-secondary
+            name: '@deepseek-ai/dsh-subagent-codex'
+            config:
+              providerName: codex-secondary
+          - id: tool-subagent-codex-primary
+            name: '@deepseek-ai/dsh-tool-subagent'
+            config:
+              provider: codex-primary
+              toolName: subagent_codex_primary
+              backgroundMode: one-shot
+              maxDepth: provider-managed
+          - id: tool-subagent-codex-secondary
             name: '@deepseek-ai/dsh-tool-subagent'
             config:
-              provider: codex
-              toolName: subagent_codex
+              provider: codex-secondary
+              toolName: subagent_codex_secondary
               backgroundMode: one-shot
               maxDepth: provider-managed

examples/acp-agent/tests/acp.snapshot.ts

@@ -175,7 +175,9 @@ const SCENARIOS: Scenario[] = [
     hasModelTurn: true,
     recorded: false,
     overridden: true,
-    headerClass: 'product-subagent-codex',
+    pinsHeader: true,
+    headerClass: 'product-subagent-result-diagnostic',
+    systemPromptSource: 'product-subagent-codex',
     configPath: PRODUCT_SUBAGENT_RESULT_DIAGNOSTIC_CONFIG,
   },
   {

examples/acp-agent/tests/fixtures/subagent/subagent-claude-code/cordis.yml

@@ -1,4 +1,4 @@
-# Test-only composition of both public opt-in providers and one-shot task tools.
+# Test-only composition of Codex plus two named Claude instances and their tools.
 # The owning e2e boots this tree but never invokes a model or product process.
 - id: fixture
   name: './fixture.ts'
@@ -12,10 +12,15 @@
 - id: subagent-codex
   name: '@deepseek-ai/dsh-subagent-codex'
 
-- id: subagent-claude-code
+- id: subagent-claude-primary
   name: '@deepseek-ai/dsh-subagent-claude-code'
   config:
-    permissionMode: acceptEdits
+    providerName: claude-primary
+
+- id: subagent-claude-secondary
+  name: '@deepseek-ai/dsh-subagent-claude-code'
+  config:
+    providerName: claude-secondary
 
 - id: tool-subagent-codex
   name: '@deepseek-ai/dsh-tool-subagent'
@@ -25,11 +30,19 @@
     backgroundMode: one-shot
     maxDepth: 'provider-managed'
 
-- id: tool-subagent-claude-code
+- id: tool-subagent-claude-primary
+  name: '@deepseek-ai/dsh-tool-subagent'
+  config:
+    provider: claude-primary
+    toolName: subagent_claude_primary
+    backgroundMode: one-shot
+    maxDepth: 'provider-managed'
+
+- id: tool-subagent-claude-secondary
   name: '@deepseek-ai/dsh-tool-subagent'
   config:
-    provider: claude-code
-    toolName: subagent_claude_code
+    provider: claude-secondary
+    toolName: subagent_claude_secondary
     backgroundMode: one-shot
     maxDepth: 'provider-managed'
 

examples/acp-agent/tests/fixtures/subagent/subagent-claude-code/driver.ts

@@ -23,8 +23,12 @@ const ctx = await boot(
 )
 
 try {
-  const providerNames = ['codex', 'claude-code'] as const
-  const toolNames = ['subagent_codex', 'subagent_claude_code'] as const
+  const providerNames = ['codex', 'claude-primary', 'claude-secondary'] as const
+  const toolNames = [
+    'subagent_codex',
+    'subagent_claude_primary',
+    'subagent_claude_secondary',
+  ] as const
   const providers = providerNames.map((providerName) => {
     const provider = ctx.subagents.getProvider(providerName)
     if (provider === undefined) {

examples/acp-agent/tests/fixtures/subagent/subagent-codex/cordis.yml

@@ -1,4 +1,4 @@
-# Test-only composition of the public opt-in provider and one-shot task tool.
+# Test-only composition of two named Codex instances and their one-shot tools.
 # The owning e2e boots this tree but never invokes the model or Codex.
 - id: fixture
   name: './fixture.ts'
@@ -9,16 +9,29 @@
 - id: subprocess
   name: '@deepseek-ai/dsh-subprocess-local'
 
-- id: subagent-codex
+- id: subagent-codex-primary
   name: '@deepseek-ai/dsh-subagent-codex'
   config:
-    permissionMode: approve-for-me
+    providerName: codex-primary
 
-- id: tool-subagent-codex
+- id: subagent-codex-secondary
+  name: '@deepseek-ai/dsh-subagent-codex'
+  config:
+    providerName: codex-secondary
+
+- id: tool-subagent-codex-primary
+  name: '@deepseek-ai/dsh-tool-subagent'
+  config:
+    provider: codex-primary
+    toolName: subagent_codex_primary
+    backgroundMode: one-shot
+    maxDepth: 'provider-managed'
+
+- id: tool-subagent-codex-secondary
   name: '@deepseek-ai/dsh-tool-subagent'
   config:
-    provider: codex
-    toolName: subagent_codex
+    provider: codex-secondary
+    toolName: subagent_codex_secondary
     backgroundMode: one-shot
     maxDepth: 'provider-managed'
 

examples/acp-agent/tests/fixtures/subagent/subagent-codex/driver.ts

@@ -23,14 +23,36 @@ const ctx = await boot(
 )
 
 try {
-  const provider = ctx.subagents.getProvider('codex')
-  if (provider === undefined) throw new Error('Codex provider was not registered')
-  const tool = ctx.tools.schemas().find(schema => schema.name === 'subagent_codex')
-  if (tool === undefined) throw new Error('subagent_codex tool was not registered')
-  const properties = tool.parameters.properties
-  if (typeof properties !== 'object' || properties === null || Array.isArray(properties)) {
-    throw new Error('subagent_codex tool has invalid parameter properties')
-  }
+  const providerNames = ['codex-primary', 'codex-secondary'] as const
+  const toolNames = ['subagent_codex_primary', 'subagent_codex_secondary'] as const
+  const providers = providerNames.map((providerName) => {
+    const provider = ctx.subagents.getProvider(providerName)
+    if (provider === undefined) {
+      throw new Error(`${providerName} provider was not registered`)
+    }
+    return {
+      name: provider.name,
+      capabilities: provider.capabilities,
+      inheritsParentContext: provider.inheritsParentContext,
+    }
+  })
+  const tools = toolNames.map((toolName) => {
+    const tool = ctx.tools.schemas().find(schema => schema.name === toolName)
+    if (tool === undefined) throw new Error(`${toolName} tool was not registered`)
+    const properties = tool.parameters.properties
+    if (
+      typeof properties !== 'object'
+      || properties === null
+      || Array.isArray(properties)
+    ) {
+      throw new Error(`${toolName} has invalid parameter properties`)
+    }
+    return {
+      name: tool.name,
+      parameterNames: Object.keys(properties).sort(),
+      required: tool.parameters.required,
+    }
+  })
   const jobTools = ctx.tools.schemas()
     .map(schema => schema.name)
     .filter(name => name === 'job_kill' || name === 'job_list' || name === 'job_output')
@@ -38,16 +60,8 @@ try {
 
   process.stdout.write(`${JSON.stringify({
     providers: ctx.subagents.list(),
-    provider: {
-      name: provider.name,
-      capabilities: provider.capabilities,
-      inheritsParentContext: provider.inheritsParentContext,
-    },
-    tool: {
-      name: tool.name,
-      parameterNames: Object.keys(properties).sort(),
-      required: tool.parameters.required,
-    },
+    providerDetails: providers,
+    tools,
     jobTools,
     starts,
   })}\n`)

examples/acp-agent/tests/snapshots/product-subagent-both/tool-schemas.expected.json

@@ -307,7 +307,7 @@
       }
     },
     {
-      "name": "subagent_claude_code",
+      "name": "subagent_claude_primary",
       "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
       "parameters": {
         "type": "object",
@@ -332,7 +332,57 @@
       }
     },
     {
-      "name": "subagent_codex",
+      "name": "subagent_claude_secondary",
+      "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "description": {
+            "type": "string",
+            "description": "A short (3-5 word) description of the delegated task, for display."
+          },
+          "prompt": {
+            "type": "string",
+            "description": "The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."
+          },
+          "run_in_background": {
+            "type": "boolean",
+            "description": "Whether to run as a background job and return its id. Defaults to false; collect with job_output or stop with job_kill."
+          }
+        },
+        "required": [
+          "description",
+          "prompt"
+        ]
+      }
+    },
+    {
+      "name": "subagent_codex_primary",
+      "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "description": {
+            "type": "string",
+            "description": "A short (3-5 word) description of the delegated task, for display."
+          },
+          "prompt": {
+            "type": "string",
+            "description": "The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."
+          },
+          "run_in_background": {
+            "type": "boolean",
+            "description": "Whether to run as a background job and return its id. Defaults to false; collect with job_output or stop with job_kill."
+          }
+        },
+        "required": [
+          "description",
+          "prompt"
+        ]
+      }
+    },
+    {
+      "name": "subagent_codex_secondary",
       "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
       "parameters": {
         "type": "object",

examples/acp-agent/tests/snapshots/product-subagent-codex/tool-schemas.expected.json

@@ -307,7 +307,32 @@
       }
     },
     {
-      "name": "subagent_codex",
+      "name": "subagent_codex_primary",
+      "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "description": {
+            "type": "string",
+            "description": "A short (3-5 word) description of the delegated task, for display."
+          },
+          "prompt": {
+            "type": "string",
+            "description": "The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."
+          },
+          "run_in_background": {
+            "type": "boolean",
+            "description": "Whether to run as a background job and return its id. Defaults to false; collect with job_output or stop with job_kill."
+          }
+        },
+        "required": [
+          "description",
+          "prompt"
+        ]
+      }
+    },
+    {
+      "name": "subagent_codex_secondary",
       "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. This call waits for the result by default. Set `run_in_background: true` to return a job id; collect with `job_output` and stop with `job_kill`.",
       "parameters": {
         "type": "object",

packages/client/locale/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/locale/README.md
-README.md: a63807f093dc12831a41196e61008151868e3205
-README.zh.md: b302e6055ba30d2db0948c0a6f1551c4a9dcb24c
+README.md: 3fb5cce334e59b36c30f22a863f8e91d260f2ac9
+README.zh.md: 4f08344d6f030e408e570ff0ad31d0b0d4de3ecc

packages/client/locale/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Locale plugin: LocaleRuntime — the `zh`/`en` preference stored as `locale.preference` in `$DSH_HOME/settings.yaml`; when that explicit Host value is absent, a fresh browser starts provisionally in the language `navigator` asks for (primary-subtag matching, with `zh` when it asks for no language this app ships). The Host read runs after plugin activation so an unavailable settings service cannot block the page; its result replaces the provisional browser value live. Remote browsers retain only a process-local selection because the settings API is loopback-only. `locale/change` fires on switches. The service also owns the ns×locale dictionary registry (typed `register(ns, {zh, en})` checked against `LocaleNamespaceMap`, `bind(ns)`→`TranslateNS<ns>`; lookup chain ns → common → zh → key), implements the slot system's `LocaleFace`, and installs itself through `ctx.slots.installLocale`, backing the framework-injected `t` standard seat (`Translate`/`TranslateNS` are ui-slots types; import them from there — this package only re-exports for dictionary owners' convenience). The [Host-backed preferences decision](../../../.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md) owns the persistence boundary.
+Locale plugin: LocaleRuntime — the `zh`/`en` preference stored as `locale.preference` in `$DSH_HOME/settings.yaml`; when that explicit Host value is absent, a fresh browser starts provisionally in the language `navigator` asks for (primary-subtag matching, with `en` when it asks for no language this app ships). The Host read runs after plugin activation so an unavailable settings service cannot block the page; its result replaces the provisional browser value live. Remote browsers retain only a process-local selection because the settings API is loopback-only. `locale/change` fires on switches, and the plugin points `<html lang>` at the active locale (`zh-CN`/`en`) on activation and on every switch. The service also owns the ns×locale dictionary registry (typed `register(ns, {zh, en})` checked against `LocaleNamespaceMap`, `bind(ns)`→`TranslateNS<ns>`; lookup chain ns → common → en → key), implements the slot system's `LocaleFace`, and installs itself through `ctx.slots.installLocale`, backing the framework-injected `t` standard seat (`Translate`/`TranslateNS` are ui-slots types; import them from there — this package only re-exports for dictionary owners' convenience). The [Host-backed preferences decision](../../../.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md) owns the persistence boundary.
 
 ## Model Experience
 

packages/client/locale/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-locale 插件：LocaleRuntime——`zh`／`en` 偏好以 `locale.preference` 存储在 `$DSH_HOME/settings.yaml` 中；若没有显式 Host 值，全新浏览器会暂时使用 `navigator` 请求的语言（按主子标签匹配；若其请求的语言本应用都不提供，则使用 `zh`）。Host 读取在插件激活后执行，因此 settings 服务不可用不会阻塞页面；读取结果会实时替换浏览器暂定值。settings API 仅限回环请求，因此远程浏览器的选择仅保留在进程内。`locale/change` 仅在切换语言时触发。该服务还拥有 ns×locale 字典注册表（类型化 `register(ns, {zh, en})` 按 `LocaleNamespaceMap` 校验，`bind(ns)`→`TranslateNS<ns>`；查找链 ns → common → zh → key），实现 slot 系统的 `LocaleFace`，并经 `ctx.slots.installLocale` 自行安装，支撑框架注入的 `t` 标准席位（`Translate`／`TranslateNS` 是 ui-slots 的类型；请从那里导入——本包的再导出仅为字典所有者提供便利）。该持久化边界由[Host settings 支撑的偏好决策](../../../.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md)拥有。
+locale 插件：LocaleRuntime——`zh`／`en` 偏好以 `locale.preference` 存储在 `$DSH_HOME/settings.yaml` 中；若没有显式 Host 值，全新浏览器会暂时使用 `navigator` 请求的语言（按主子标签匹配；若其请求的语言本应用都不提供，则使用 `en`）。Host 读取在插件激活后执行，因此 settings 服务不可用不会阻塞页面；读取结果会实时替换浏览器暂定值。settings API 仅限回环请求，因此远程浏览器的选择仅保留在进程内。`locale/change` 仅在切换语言时触发；插件会在激活时以及每次切换时把 `<html lang>` 指向当前 locale（`zh-CN`／`en`）。该服务还拥有 ns×locale 字典注册表（类型化 `register(ns, {zh, en})` 按 `LocaleNamespaceMap` 校验，`bind(ns)`→`TranslateNS<ns>`；查找链 ns → common → en → key），实现 slot 系统的 `LocaleFace`，并经 `ctx.slots.installLocale` 自行安装，支撑框架注入的 `t` 标准席位（`Translate`／`TranslateNS` 是 ui-slots 的类型；请从那里导入——本包的再导出仅为字典所有者提供便利）。该持久化边界由[Host settings 支撑的偏好决策](../../../.agents/notes/implemented/bug-fix/2026-08-06-host-backed-web-preferences.md)拥有。
 
 ## 模型体验
 

packages/client/locale/src/client/index.ts

@@ -86,8 +86,16 @@ declare module '@deepseek-ai/cordis' {
   }
 }
 
-/** Fallback locale consulted after the active locale misses (also the last-resort initial locale). */
-export const FALLBACK_LOCALE: LocaleId = 'zh'
+/**
+ * English is both the locale the UI opens in when the browser names no shipped
+ * language (and for non-browser runs), and the dictionary consulted after the
+ * active locale misses a key. One constant serves both because the shipped
+ * `zh`/`en` dictionaries carry identical key sets, so neither direction can
+ * leave a key unresolved; the residual case points at English rather than
+ * zh because a browser naming neither shipped language is the reader least
+ * likely to read Chinese.
+ */
+export const FALLBACK_LOCALE: LocaleId = 'en'
 
 /** Shared namespace for shell-level texts. */
 export const COMMON_NS = 'common'
@@ -101,10 +109,32 @@ const LOCALES: readonly LocaleDefinition[] = Object.freeze([
   { id: 'en', label: 'English' },
 ])
 
+/**
+ * `<html lang>` tag per shipped locale. The locale id is the app's own
+ * vocabulary (primary subtag); the document attribute wants a BCP 47 tag,
+ * which assistive technology and browser features (pronunciation rules,
+ * translation offers, font fallback, spell check) read to pick their own
+ * behavior. `zh` alone leaves the script ambiguous, so the shipped Chinese
+ * copy names the variant it actually is.
+ */
+const DOCUMENT_LANGUAGE: Record<LocaleId, string> = { zh: 'zh-CN', en: 'en' }
+
+/**
+ * Point `<html lang>` at the active locale. Called on every locale change,
+ * so the attribute tracks the UI instead of standing at whatever the served
+ * markup happened to declare.
+ * @param active - the active locale id.
+ */
+function syncDocumentLanguage(active: LocaleId): void {
+  // Non-browser runs (node boots of the client tree) have no document.
+  if (typeof document === 'undefined') return
+  document.documentElement.lang = DOCUMENT_LANGUAGE[active]
+}
+
 /**
  * Dictionary registry plus locale preference. Lookup chain per key: the
- * entry's namespace in the active locale -> that namespace's zh fallback ->
- * the shared common namespace (active, then zh) -> the key itself (missing
+ * entry's namespace in the active locale -> that namespace's en fallback ->
+ * the shared common namespace (active, then en) -> the key itself (missing
  * text stays visible, fail loud in the UI rather than blank). Reads go
  * through {@link getLocale}; writes only through {@link setLocale};
  * continuous sync through the `locale/change` event, or through the
@@ -169,13 +199,20 @@ export class LocaleRuntime {
 
   /**
    * Switch the active locale — the only user preference write entry.
+   *
+   * The durable write happens even when the id already matches the active
+   * locale, because the active value may be a provisional browser-derived or
+   * fallback resolution that nothing has stored yet. Picking the language
+   * already on screen is still an explicit choice, and it must survive a
+   * different browser sharing the same DSH home. Only the render notification
+   * is conditional: republishing an unchanged locale would churn every
+   * subscriber for nothing.
    * @param id - a registered locale id; unknown ids throw.
    */
   setLocale(id: string): void {
     const match = this.snapshot.locales.find(l => l.id === id)
     if (match === undefined) throw new Error(`locale "${id}" is not registered`)
-    if (this.snapshot.active === match.id) return
-    this.publish(match.id, true)
+    if (this.snapshot.active !== match.id) this.publish(match.id, true)
     void this.host?.set(LOCALE_PREFERENCE_FIELD, match.id)
   }
 
@@ -365,6 +402,7 @@ export function apply(ctx: ClientContext): void {
   const store = createLanguageRowStore()
   let bound: BoundActions<typeof store> | undefined
   const sync = (snapshot: LocaleSnapshot): void => {
+    syncDocumentLanguage(snapshot.active)
     bound?.sync(
       snapshot.active,
       snapshot.locales.map(l => ({ id: l.id, label: l.label })),
@@ -372,6 +410,10 @@ export function apply(ctx: ClientContext): void {
     )
   }
   ctx.on('locale/change', sync)
+  // The served markup declares one language; the resolved locale may differ
+  // (browser detection, or a stored preference adopted after activation), so
+  // state it once at activation rather than waiting for the first change.
+  syncDocumentLanguage(locale.getLocale().active)
   const injected = (actions: BoundActions<typeof store>): LanguageRowInjected => {
     bound = actions
     // Re-sync from the getter so no event is lost between registration and

packages/client/locale/tests/apply.client.spec.ts

@@ -2,10 +2,9 @@
  * Language row registration, snapshot projection into the row store, and
  * recovery after an HMR collapse of the declaring entry. */
 import { Context } from '@deepseek-ai/cordis'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
-import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
-import { SettingsScopeBinder } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-scope.ts'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
 import {
   apply, inject, SETTINGS_NS,
@@ -48,7 +47,7 @@ async function bench() {
   ctx.provide('connection', { api: { settings: { describe, mutate } }, isLoopback: true } as never)
   // The settings transport and the forwarded-event port the plugin injects.
   new TestRemote(ctx)
-  await ctx.plugin(SettingsScopeBinder, new SettingsSchemaService(ctx)).await()
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return {
     ctx, slots: ctx.get('slots') as SlotRegistry, describe, mutate,
     setHostPreference: (next: string | undefined) => { preference = next; revision += 1 },
@@ -74,15 +73,10 @@ function faceOf(slots: SlotRegistry) {
 }
 
 describe('locale apply', () => {
-  // A fresh service opens in the browser's language, so these wiring specs
-  // pin one to keep their zh baseline independent of the test environment.
-  beforeEach(() => {
-    vi.stubGlobal('navigator', { languages: ['zh-CN'], language: 'zh-CN' })
-  })
-
-  afterEach(() => {
-    vi.unstubAllGlobals()
-  })
+  // These are wiring specs, not default-language specs. A fresh LocaleRuntime
+  // with no jsdom `window` skips browser detection and opens on FALLBACK_LOCALE
+  // (en); each test that reads localized copy stages its locale explicitly via
+  // setLocale/Host preference instead of leaning on a dead browser pin.
 
   it('declares the slot service', () => {
     expect(inject).toEqual(['slots', 'connection', 'remote', 'settingsScope'])
@@ -96,6 +90,9 @@ describe('locale apply', () => {
     // Base dictionaries are registered: the (ns, locale) seats are occupied.
     expect(() => locale.register('common', 'zh', {})).toThrow('already has locale')
     expect(() => locale.register('common', 'en', {})).toThrow('already has locale')
+    // The lane has no jsdom `window`, so detection never runs and a fresh
+    // service opens on FALLBACK_LOCALE (en); read the zh side explicitly.
+    locale.setLocale('zh')
     expect(locale.bind(SETTINGS_NS)('language.title')).toBe('语言')
     const entry = before.slots.entries(SLOT).find(e => e.component === LanguageRow)!
     expect(entry.options).toMatchObject({ id: 'language', order: 0 })
@@ -134,18 +131,26 @@ describe('locale apply', () => {
 
   it('loads and refreshes the explicit Host preference after nonblocking activation', async () => {
     const b = await bench()
-    b.setHostPreference('en')
+    // The shared mirror read once at bench time; a Host-side change reaches it
+    // through the document invalidation, exactly as production announces one.
+    // Preference must differ from the provisional locale (FALLBACK_LOCALE = en
+    // with no window), or clearing it below would be unobservable.
+    b.setHostPreference('zh')
+    b.ctx.remote.$dispatch('settings/document-updated', [LOCALE_SETTINGS_NAMESPACE, 0])
     declareItems(b.slots)
     await b.ctx.plugin({ inject: [...inject], apply }).await()
     const locale = b.ctx.get('locale') as LocaleRuntime
-    await vi.waitFor(() => { expect(locale.getLocale().active).toBe('en') })
-    b.setHostPreference(undefined)
-    b.ctx.remote.$dispatch('settings/document-updated', [LOCALE_SETTINGS_NAMESPACE, 0])
     await vi.waitFor(() => { expect(locale.getLocale().active).toBe('zh') })
-    b.setHostPreference('en')
+    // Cleared preference falls back to the provisional locale.
+    b.setHostPreference(undefined)
     b.ctx.remote.$dispatch('settings/document-updated', [LOCALE_SETTINGS_NAMESPACE, 0])
     await vi.waitFor(() => { expect(locale.getLocale().active).toBe('en') })
-    expect(b.describe).toHaveBeenCalledTimes(3)
+    // Re-selecting zh after the clear is an explicit pick of the provisional
+    // value and must persist as a written preference.
+    b.setHostPreference('zh')
+    b.ctx.remote.$dispatch('settings/document-updated', [LOCALE_SETTINGS_NAMESPACE, 0])
+    await vi.waitFor(() => { expect(locale.getLocale().active).toBe('zh') })
+    expect(b.describe).toHaveBeenCalledTimes(4)
   })
 
   it('recovers after an HMR collapse of the declaring entry (stale disposer must not block)', async () => {

packages/client/locale/tests/document-language.client.spec.ts

@@ -0,0 +1,94 @@
+// @vitest-environment jsdom
+/**
+ * `<html lang>` tracks the active locale.
+ *
+ * The served markup declares one language, but the resolved locale may differ
+ * (browser detection, or a stored Host preference adopted after activation),
+ * and it changes again whenever the user switches. Assistive technology and
+ * browser features read this attribute, so a stale value misreports the
+ * document language rather than merely looking untidy.
+ */
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply, inject } from '@deepseek-ai/dsh-client-locale/client'
+import type { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { LOCALE_SETTINGS_NAMESPACE, LocaleSettingsSchema } from '../src/locale-settings.ts'
+
+/** Boot the plugin over a stub Host settings document. */
+async function bench(preference?: string) {
+  const ctx = new Context()
+  await ctx.plugin(SlotRegistry).await()
+  let stored = preference
+  let revision = 0
+  const namespace = () => ({
+    ns: LOCALE_SETTINGS_NAMESPACE,
+    schema: LocaleSettingsSchema.toJSON(),
+    value: stored === undefined ? {} : { preference: stored },
+    applies: 'live' as const,
+    secrets: [],
+    revision,
+  })
+  const describeRpc = vi.fn(async () => ({
+    rpcId: 'locale-describe' as never,
+    result: { ok: true as const, value: { writable: true, hasDocument: true, namespaces: [namespace()] } },
+  }))
+  const mutate = vi.fn(async (request: { ops: { value: string }[] }) => {
+    stored = request.ops[0]!.value
+    revision += 1
+    return { rpcId: 'locale-mutate' as never, result: { ok: true as const, value: namespace() } }
+  })
+  ctx.provide('connection', { api: { settings: { describe: describeRpc, mutate } }, isLoopback: true } as never)
+  // The settings transport and the forwarded-event port the plugin injects.
+  new TestRemote(ctx)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
+  await ctx.plugin({ inject: [...inject], apply }).await()
+  return { ctx, locale: ctx.get('locale') as LocaleRuntime }
+}
+
+const langOf = (): string => document.documentElement.lang
+
+describe('document language', () => {
+  beforeEach(() => {
+    // The served markup declares the product default; the plugin must not
+    // depend on that value already being correct.
+    document.documentElement.lang = 'en'
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+  })
+
+  afterEach(() => {
+    // navigator properties are installed with defineProperty above, so they
+    // are removed the same way; nothing here goes through vi.stubGlobal.
+    const own = navigator as unknown as Record<string, unknown>
+    delete own.languages
+    delete own.language
+  })
+
+  it('states the resolved locale at activation, not the value the markup shipped', async () => {
+    // A Chinese browser resolves zh even though the markup said en.
+    const { locale } = await bench()
+    expect(locale.getLocale().active).toBe('zh')
+    expect(langOf()).toBe('zh-CN')
+  })
+
+  it('follows a locale switch in both directions with BCP 47 tags', async () => {
+    const { locale } = await bench()
+    expect(langOf()).toBe('zh-CN')
+    locale.setLocale('en')
+    // `en` needs no region; `zh` names its script variant, which bare `zh`
+    // leaves ambiguous for pronunciation and font selection.
+    expect(langOf()).toBe('en')
+    locale.setLocale('zh')
+    expect(langOf()).toBe('zh-CN')
+  })
+
+  it('follows an explicit Host preference that overrides browser detection', async () => {
+    // Stored preference wins over the zh browser pinned above.
+    const { locale } = await bench('en')
+    await vi.waitFor(() => { expect(locale.getLocale().active).toBe('en') })
+    await vi.waitFor(() => { expect(langOf()).toBe('en') })
+  })
+})

packages/client/locale/tests/locale.client.spec.ts

@@ -3,8 +3,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { Context } from '@deepseek-ai/cordis'
 import { stubSettingsScope, type StubSettingsScope } from '@deepseek-ai/dsh-client-test-runtime'
 import type { LocaleSettings, LocaleSnapshot } from '@deepseek-ai/dsh-client-locale/client'
-import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-
+import { FALLBACK_LOCALE, LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 const make = (host?: StubSettingsScope<LocaleSettings>): {
   ctx: Context
   svc: LocaleRuntime
@@ -37,31 +36,34 @@ describe('LocaleRuntime', () => {
     vi.unstubAllGlobals()
   })
 
-  it('translates through the active-locale -> zh -> key chain', () => {
+  it('translates through the active-locale -> en -> key chain', () => {
     const { svc } = make()
-    svc.register('ns', 'zh', { hello: '你好', onlyZh: '仅中文' })
-    svc.register('ns', 'en', { hello: 'Hello' })
+    svc.register('ns', 'zh', { hello: '你好' })
+    svc.register('ns', 'en', { hello: 'Hello', onlyEn: 'English only' })
     const t = svc.bind('ns')
     expect(svc.getLocale().active).toBe('zh')
     expect(t('hello')).toBe('你好')
+    // The active locale misses this key; the en fallback supplies it.
+    expect(t('onlyEn')).toBe('English only')
     svc.setLocale('en')
     expect(t('hello')).toBe('Hello')
-    expect(t('onlyZh')).toBe('仅中文')
     expect(t('missing.key')).toBe('missing.key')
   })
 
   it('falls through to the common vocabulary after the namespace misses (production keys)', () => {
     const { svc } = make()
     // The shipped common pair is registered by apply; the bench registers it
-    // directly to pin the production chain: ns -> common -> zh -> key.
+    // directly to pin the production chain: ns -> common -> en -> key.
     svc.register('common', 'zh', { retry: '重试' })
     svc.register('common', 'en', { retry: 'Retry' })
-    svc.register('ns', 'zh', { own: '自有' })
+    svc.register('ns', 'en', { own: 'Own' })
     const t = svc.bind('ns')
     expect(t('retry')).toBe('重试')
+    // zh is active and `ns` has no zh dictionary at all: the en fallback answers.
+    expect(t('own')).toBe('Own')
     svc.setLocale('en')
     expect(t('retry')).toBe('Retry')
-    expect(t('own')).toBe('自有')
+    expect(t('own')).toBe('Own')
     // common itself must not recurse: a miss inside common echoes the key.
     // (Wide-string ns hits the untyped bind overload — the typed one rejects
     // unknown keys at compile time, which is the point of the typed registry contract.)
@@ -136,7 +138,7 @@ describe('LocaleRuntime', () => {
     expect(svc.getSnapshot().revision).toBe(before + 1)
   })
 
-  it('setLocale writes through the scope, republishes an immutable snapshot, and no-ops on same value', () => {
+  it('setLocale writes through the scope and republishes only on a real change', () => {
     const host = stubSettingsScope<LocaleSettings>()
     const { svc, events } = make(host)
     svc.setLocale('en')
@@ -145,9 +147,27 @@ describe('LocaleRuntime', () => {
     expect(events).toHaveLength(1)
     expect(events[0]).toBe(svc.getLocale())
     expect(events[0]!.revision).toBe(1)
+    // Re-selecting the active locale publishes nothing (no subscriber churn)
+    // but still writes: the active value may be a provisional browser-derived
+    // resolution nothing has stored, and picking it is an explicit choice that
+    // must outlive this browser.
     svc.setLocale('en')
     expect(events).toHaveLength(1)
-    expect(host.set).toHaveBeenCalledOnce()
+    expect(host.set).toHaveBeenCalledTimes(2)
+    expect(host.set).toHaveBeenLastCalledWith('preference', 'en')
+  })
+
+  it('persists an explicit pick of the provisional locale, so a shared DSH home agrees', () => {
+    // A browser naming no shipped language opens at FALLBACK_LOCALE with
+    // nothing stored. Choosing that same language in the menu must become
+    // durable, or a Chinese browser sharing the home still opens Chinese.
+    stubLanguages('fr-FR')
+    const host = stubSettingsScope<LocaleSettings>()
+    const { svc } = make(host)
+    expect(svc.getLocale().active).toBe('en')
+    expect(host.set).not.toHaveBeenCalled()
+    svc.setLocale('en')
+    expect(host.set).toHaveBeenCalledWith('preference', 'en')
   })
 
   it('setLocale without a host scope stays process-local', () => {
@@ -206,21 +226,21 @@ describe('LocaleRuntime', () => {
     expect(make().svc.getLocale().active).toBe('en')
     vi.stubGlobal('navigator', { language: 'en-US' })
     expect(make().svc.getLocale().active).toBe('en')
-    // No shipped language anywhere in the browser's preferences: zh remains
-    // the product default rather than an arbitrary near-match.
+    // No shipped language anywhere in the browser's preferences: en is the
+    // product default rather than an arbitrary near-match.
     stubLanguages('fr-FR', 'de')
-    expect(make().svc.getLocale().active).toBe('zh')
+    expect(make().svc.getLocale().active).toBe('en')
   })
 
-  it('runs outside a browser (node boots): the fallback decides and the machine language does not', () => {
+  it('runs outside a browser (node boots): the default decides and the machine language does not', () => {
     vi.stubGlobal('window', undefined)
     // Node exposes its own global navigator; without a window it must not
     // reach the resolution at all.
-    stubLanguages('en-US')
+    stubLanguages('zh-CN')
     const { svc } = make()
-    expect(svc.getLocale().active).toBe('zh')
-    svc.setLocale('en')
     expect(svc.getLocale().active).toBe('en')
+    svc.setLocale('zh')
+    expect(svc.getLocale().active).toBe('zh')
   })
 
   it('lets an explicit in-process preference replace the browser-derived value', () => {
@@ -230,6 +250,28 @@ describe('LocaleRuntime', () => {
     expect(svc.getLocale().active).toBe('zh')
   })
 
+  it('serves English as both the opening locale and the dictionary fallback', () => {
+    // One constant covers both jobs: the locale the UI opens in with no usable
+    // browser signal, and the dictionary backing a key the active locale
+    // misses. Safe to share only because the shipped zh/en dictionaries carry
+    // identical key sets (asserted below on a registered pair).
+    expect(FALLBACK_LOCALE).toBe('en')
+    vi.stubGlobal('window', undefined)
+    const { svc } = make()
+    // A key present only in en resolves for a zh reader through the fallback.
+    svc.register('ns', 'zh', {})
+    svc.register('ns', 'en', { onlyEn: 'English only' })
+    svc.setLocale('zh')
+    expect(svc.getLocale().active).toBe('zh')
+    expect(svc.bind('ns')('onlyEn')).toBe('English only')
+    // The reverse no longer resolves: a zh-only key is unreachable from en, so
+    // the key itself surfaces (fail loud) rather than silently rendering zh.
+    svc.register('ns2', 'zh', { onlyZh: '仅中文' })
+    svc.register('ns2', 'en', {})
+    svc.setLocale('en')
+    expect(svc.bind('ns2')('onlyZh')).toBe('onlyZh')
+  })
+
   it('exposes the two shipped locales with self-described labels', () => {
     const { svc } = make()
     expect(svc.getLocale().locales).toEqual([

packages/client/ui-agent-preset/src/client/index.ts

@@ -46,7 +46,7 @@ export type { AgentPresetOption, AgentPresetSettingsState } from './settings-sto
 export { AGENT_PRESET_SETTINGS_NS, writeDefaultPreset } from './settings-store.ts'
 
 /** Required services (cordis fiber inject). */
-export const inject = ['slots', 'locale', 'connection', 'remote']
+export const inject = ['slots', 'locale', 'connection', 'remote', 'settingsScope']
 
 /**
  * Mount the General-settings row.
@@ -54,7 +54,7 @@ export const inject = ['slots', 'locale', 'connection', 'remote']
  */
 export function apply(ctx: ClientContext): void {
   const { api } = ctx.get('connection') as ConnectionHandle
-  const controller = new AgentPresetSettingsController(api)
+  const controller = new AgentPresetSettingsController(api, ctx.settingsScope.describe())
   // One roster, four surfaces. The chip is registered in a later scope, so it
   // subscribes here rather than being reached from this one.
   const rosterReaders = new Set<() => void>()

packages/client/ui-agent-preset/src/client/settings-store.ts

@@ -9,6 +9,7 @@
 
 import type { IApiClient } from '@deepseek-ai/dsh-api-remotes/client'
 import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type { SettingsDescribeFace } from '@deepseek-ai/dsh-client-ui-settings/client'
 
 /** The agent-preset settings namespace on the host wire. */
 export const AGENT_PRESET_SETTINGS_NS = 'agent-presets'
@@ -191,7 +192,14 @@ export class AgentPresetSettingsController {
   /** Row snapshot the renderer subscribes to. */
   readonly store: SnapshotStore<AgentPresetSettingsState> = createSnapshotStore(INITIAL)
 
-  constructor(private readonly api: IApiClient) {}
+  /**
+   * @param api - the agent-preset and settings wire faces (roster and default write).
+   * @param describeFace - the shared mirror's describe face (writability source).
+   */
+  constructor(
+    private readonly api: IApiClient,
+    private readonly describeFace: SettingsDescribeFace,
+  ) {}
 
   private set(patch: Partial<AgentPresetSettingsState>): void {
     this.store.set({ ...this.store.getSnapshot(), ...patch })
@@ -212,24 +220,20 @@ export class AgentPresetSettingsController {
       this.set({ status: 'unavailable', options: [], currentValue: '' })
       return
     }
-    try {
-      // The roster says what may be chosen; `settings.describe` says whether
-      // this browser may write the choice down. A non-loopback browser reaches
-      // neither method, so a refused describe leaves the row read-only rather
-      // than offering a control whose write the Host would refuse.
-      const described = await this.api.settings.describe({})
-      this.set({
-        status: 'ready',
-        error: null,
-        writable: described.result.ok && described.result.value.writable,
-        options: presetOptions(presets),
-        // A roster can mark nothing default: settings can name a preset that
-        // was since deleted, and the picker still has to show something.
-        currentValue: presets.find(preset => preset.isDefault)?.id ?? first.id,
-      })
-    } catch (error) {
-      this.set({ status: 'error', error: messageOf(error) })
-    }
+    // The roster says what may be chosen; the shared mirror says whether this
+    // browser may write the choice down. A non-loopback browser's mirror never
+    // answers, so the row stays read-only rather than offering a control
+    // whose write the Host would refuse.
+    await this.describeFace.ensure()
+    this.set({
+      status: 'ready',
+      error: null,
+      writable: this.describeFace.getSnapshot().view?.writable ?? false,
+      options: presetOptions(presets),
+      // A roster can mark nothing default: settings can name a preset that
+      // was since deleted, and the picker still has to show something.
+      currentValue: presets.find(preset => preset.isDefault)?.id ?? first.id,
+    })
   }
 
   /**

packages/client/ui-agent-preset/tests/apply.client.spec.ts

@@ -10,7 +10,8 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-import { TestRemote, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-agent-preset/client'
 import { AgentPresetLabel } from '../src/client/AgentPresetLabel.tsx'
 import type { AgentPresetLabelInjected } from '../src/client/AgentPresetLabel.tsx'
@@ -21,9 +22,9 @@ import type { AgentPresetSectionInjected } from '../src/client/AgentPresetSectio
 import { AgentPresetSeat } from '../src/client/AgentPresetSeat.tsx'
 import type { AgentPresetSeatInjected } from '../src/client/AgentPresetSeat.tsx'
 
-// 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')
+// These specs assert the shipped Chinese copy. The lane has no jsdom `window`,
+// so browser-language detection never runs and a fresh LocaleRuntime opens on
+// FALLBACK_LOCALE (en); each bench stages zh explicitly on the locale instead.
 
 const ROSTER_ONE = {
   rpcId: 'r',
@@ -77,6 +78,7 @@ async function bench() {
   const moveDefault = (): void => { ROSTER = ROSTER_MOVED }
   await ctx.plugin(SlotRegistry).await()
   const locale = new LocaleRuntime(ctx)
+  locale.setLocale('zh')
   ctx.provide('locale', locale)
   // The plugins inject `remote`; forwarded events reach them through the
   // same `$dispatch` handoff the connection sink makes.
@@ -117,6 +119,7 @@ async function bench() {
       },
     },
   } as never)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return { ctx, slots: ctx.get('slots') as SlotRegistry, calls, moveDefault }
 }
 
@@ -178,7 +181,7 @@ function sessionsDouble(state: {
 
 describe('ui-agent-preset apply', () => {
   it('declares the services it uses', () => {
-    expect(inject).toEqual(['slots', 'locale', 'connection', 'remote'])
+    expect(inject).toEqual(['slots', 'locale', 'connection', 'remote', 'settingsScope'])
   })
 
   it('registers the General row and the settings section', async () => {

packages/client/ui-agent-preset/tests/settings-store.client.spec.ts

@@ -7,9 +7,15 @@
 
 import { describe, expect, it } from 'vitest'
 import type { IApiClient } from '@deepseek-ai/dsh-api-remotes/client'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import {
   AGENT_PRESET_SETTINGS_NS, AgentPresetSettingsController, messageOf,
 } from '../src/client/settings-store.ts'
+
+/** Controller over a real mirror derived from the same fake wire. */
+function derivedController(api: IApiClient) {
+  return new AgentPresetSettingsController(api, new SettingsDescribeMirror(api))
+}
 import { AgentPresetSeatController } from '../src/client/seat-store.ts'
 import type { SeatSessionSummary } from '../src/client/seat-store.ts'
 
@@ -60,7 +66,7 @@ function fakeApi(
 
 describe('the agent-preset settings controller', () => {
   it('disables the control when this browser may not write settings', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
     ], { readOnly: true }))
 
@@ -74,7 +80,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('derives options and the current default from one roster call', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
       { id: 'mine', trust: 'user', isDefault: false },
     ]))
@@ -91,7 +97,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('offers no broken preset: the pickers choose the NEXT session\'s composition', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
       { id: 'damaged', trust: 'user', isDefault: false, broken: 'the composition is not valid YAML' },
     ] as never))
@@ -105,7 +111,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('carries the display metadata a preset published', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true, name: '标准模式', description: '完整的编码 agent。' },
     ] as never))
 
@@ -119,7 +125,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('reports an empty roster as unavailable, not as an error', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([]))
+    const controller = derivedController(fakeApi([]))
 
     await controller.load()
 
@@ -131,7 +137,7 @@ describe('the agent-preset settings controller', () => {
 
   it('writes only the default field, into the agent-presets namespace', async () => {
     const writes: Recorded[] = []
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
       { id: 'minimal', trust: 'system', isDefault: false },
     ], { writes }))
@@ -144,7 +150,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('restores the previous value and surfaces the message when the write fails', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
       { id: 'minimal', trust: 'system', isDefault: false },
     ], { failWrite: 'read-only settings' }))
@@ -160,7 +166,7 @@ describe('the agent-preset settings controller', () => {
 
   it('ignores a pick that is already the default', async () => {
     const writes: Recorded[] = []
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
     ], { writes }))
     await controller.load()
@@ -171,7 +177,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('surfaces a roster failure without claiming the deployment has no presets', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([], { failList: 'host down' }))
+    const controller = derivedController(fakeApi([], { failList: 'host down' }))
 
     await controller.load()
 
@@ -183,7 +189,7 @@ describe('the agent-preset settings controller', () => {
   it('shows the first preset when the roster marks none default', async () => {
     // Settings can name a preset that was since deleted; the picker still has
     // to show something rather than an empty control.
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: false },
       { id: 'mine', trust: 'user', isDefault: false },
     ]))
@@ -195,7 +201,7 @@ describe('the agent-preset settings controller', () => {
 
   it('ignores a load while one is already in flight', async () => {
     const writes: Recorded[] = []
-    const controller = new AgentPresetSettingsController(fakeApi(
+    const controller = derivedController(fakeApi(
       [{ id: 'standard', trust: 'system', isDefault: true }], { writes }))
 
     await Promise.all([controller.load(), controller.load()])
@@ -211,7 +217,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('reports a transport that rejects rather than answering', async () => {
-    const controller = new AgentPresetSettingsController({
+    const controller = derivedController({
       agentPresets: { list: () => Promise.reject(new Error('socket closed')) },
     } as unknown as IApiClient)
 
@@ -221,7 +227,7 @@ describe('the agent-preset settings controller', () => {
   })
 
   it('reports a transport that rejects mid-write and keeps the old default showing', async () => {
-    const controller = new AgentPresetSettingsController(fakeApi([
+    const controller = derivedController(fakeApi([
       { id: 'standard', trust: 'system', isDefault: true },
       { id: 'mine', trust: 'user', isDefault: false },
     ], { failWriteWith: new Error('socket closed') }))
@@ -434,7 +440,7 @@ describe('the new-session chip controller', () => {
     expect(controller.store.getSnapshot().error).toBe('socket closed')
   })
 
-  it('reports a refused describe as a failure rather than a half-read row', async () => {
+  it('degrades to a read-only row while the mirror holds no answer', async () => {
     const api = {
       agentPresets: {
         list: () => Promise.resolve({
@@ -442,16 +448,19 @@ describe('the new-session chip controller', () => {
           result: { ok: true as const, value: { presets: [{ id: 'standard', trust: 'system', isDefault: true }], authorable: true } },
         }),
       },
-      // The roster answered; `settings.describe` is what rejected, and the row
-      // cannot claim a writable default it never confirmed.
+      // The roster answered; the mirror's read is what failed, so the row
+      // shows the current default without offering a write it never confirmed.
       settings: { describe: () => Promise.reject(new Error('socket closed')) },
     } as unknown as IApiClient
-    const controller = new AgentPresetSettingsController(api)
+    const controller = derivedController(api)
 
     await controller.load()
 
-    expect(controller.store.getSnapshot().status).toBe('error')
-    expect(controller.store.getSnapshot().error).toBe('socket closed')
+    expect(controller.store.getSnapshot()).toMatchObject({
+      status: 'ready',
+      writable: false,
+      currentValue: 'standard',
+    })
   })
 
 

packages/client/ui-input-trigger/tests/apply.client.spec.ts

@@ -7,16 +7,11 @@
 import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { createScope, scopeOf, SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import { apply, inject, InputTriggerService } from '@deepseek-ai/dsh-client-ui-input-trigger/client'
 import type { MenuViewInjected } from '@deepseek-ai/dsh-client-ui-input-trigger/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')
-
 const sid = (k: string): SessionId => k as SessionId
 
 async function bench() {
@@ -37,6 +32,10 @@ async function bench() {
     scopeOf: (c: Context) => scopeOf(c),
   })
   const locale = new LocaleRuntime(ctx)
+  // These specs assert the shipped Chinese copy. There is no jsdom `window`
+  // in this lane, so browser-language detection never runs and the locale
+  // comes from FALLBACK_LOCALE (en): state the asserted locale explicitly.
+  locale.setLocale('zh')
   ctx.provide('locale', locale)
   return { ctx, slots, locale }
 }

packages/client/ui-jobs/tests/browser-plugin.client.spec.ts

@@ -39,6 +39,10 @@ async function bench(): Promise<{ ctx: Context; fiber: ReturnType<Context['plugi
   ctx.provide('remote', { $on: () => () => {} } as never)
   ctx.provide('settingsScope', { bind: () => stubSettingsScope().scope } as never)
   await ctx.plugin({ inject: localeInject, apply: applyLocale }).await()
+  // These specs assert the shipped Chinese copy. There is no jsdom `window` in
+  // this lane, so browser-language detection never runs and the locale comes
+  // from FALLBACK_LOCALE (en): state the asserted locale explicitly.
+  ctx.locale.setLocale('zh')
   const fiber = ctx.plugin({ inject: [...inject], apply })
   await fiber.await()
   return { ctx, fiber }

packages/client/ui-model-selection/tests/browser-plugin.client.spec.ts

@@ -104,7 +104,12 @@ async function bench() {
       return () => { seats.delete(options.name) }
     },
   })
-  ctx.provide('locale', new LocaleRuntime(ctx))
+  const localeRuntime = new LocaleRuntime(ctx)
+  // This spec asserts the shipped Chinese copy. There is no jsdom `window` in
+  // this lane, so browser-language detection never runs and the locale comes
+  // from FALLBACK_LOCALE (en): state the asserted locale explicitly.
+  localeRuntime.setLocale('zh')
+  ctx.provide('locale', localeRuntime)
   const scopes = new Map<SessionId, Context>()
   const addressed = new Set<SessionId>()
   ctx.provide('sessions', {

packages/client/ui-permission-presets/src/client/index.ts

@@ -33,9 +33,7 @@ import {
 import {
   displayPermissionPreset, FULL_ACCESS_PRESET,
 } from './presentation.ts'
-import {
-  PERMISSION_SETTINGS_NS, PermissionPresetSettingsController, refreshPermissionIfLoaded,
-} from './settings-store.ts'
+import { PermissionPresetSettingsController } from './settings-store.ts'
 
 export type { PermissionRowInjected, PermissionRowProps } from './PermissionRow.tsx'
 export type {
@@ -43,7 +41,7 @@ export type {
 } from './settings-store.ts'
 
 /** Required services (cordis fiber inject). */
-export const inject = ['commandUi', 'sessions', 'slots', 'locale', 'connection', 'remote', 'settingsSchema']
+export const inject = ['commandUi', 'sessions', 'slots', 'locale', 'connection', 'remote', 'settingsScope', 'settingsSchema']
 
 const ACCESS_NS = 'permission.access'
 
@@ -113,7 +111,10 @@ export function apply(ctx: ClientContext): void {
   ctx.effect(() => ctx.locale.register('settings.permission', { zh, en }), 'ui-permission: settings row dictionaries')
 
   const connection = ctx.get('connection') as ConnectionHandle
-  const controller = new PermissionPresetSettingsController(connection.api, ctx.settingsSchema)
+  // The row follows the shared describe mirror, whose owning plugin already
+  // refreshes it on document commits and reconnects.
+  const controller = new PermissionPresetSettingsController(
+    ctx.settingsScope.describe(), connection.api, ctx.settingsSchema)
   const load = (): Promise<void> => controller.load()
   const select = (preset: string): Promise<void> => controller.select(preset)
   const injected = (): PermissionRowInjected => ({
@@ -122,20 +123,7 @@ export function apply(ctx: ClientContext): void {
     select,
   })
 
-  ctx.effect(() => {
-    const refresh = (): void => { refreshPermissionIfLoaded(controller) }
-    const disposers = [
-      ctx.remote.$on('settings/document-updated', (ns) => {
-        if (ns !== PERMISSION_SETTINGS_NS) return
-        refresh()
-      }),
-      ctx.on('connection/reset', () => { refresh() }),
-    ]
-    return () => {
-      controller.dispose()
-      for (const dispose of disposers) dispose()
-    }
-  }, 'ui-permission: settings invalidations')
+  ctx.effect(() => () => { controller.dispose() }, 'ui-permission: settings row directory')
 
   ctx.slots.inject('settings.general.item', () => ctx.slots.register({
     name: 'settings.general.item',

packages/client/ui-permission-presets/src/client/settings-store.ts

@@ -1,7 +1,9 @@
 /**
- * Permission default-settings controller. The host descriptor supplies the
- * current value and the dynamic preset enum; writes target only
- * `defaultPreset` and carry the descriptor revision.
+ * Permission default-settings controller. The permission descriptor comes
+ * from the shared describe mirror (the dynamic preset enum lives in the
+ * namespace schema, which per-namespace scopes do not carry); writes target
+ * only `defaultPreset`, carry the descriptor revision, and fold their answer
+ * back into the mirror.
  */
 
 import type {
@@ -10,7 +12,9 @@ import type {
 import {
   createSnapshotStore, type SnapshotStore,
 } from '@deepseek-ai/dsh-client-runtime/client'
-import type { SchemaNode, SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/client'
+import type {
+  SchemaNode, SettingsDescribeFace, SettingsSchemaService,
+} from '@deepseek-ai/dsh-client-ui-settings/client'
 import { displayPermissionPreset } from './presentation.ts'
 
 /** Permission's settings namespace on the host wire. */
@@ -74,7 +78,7 @@ export function permissionDefaultOf(view: SettingsNamespaceView, schema: Setting
   return { currentValue: value, options }
 }
 
-/** Controller joining Settings reads, writes, and pushed invalidations. */
+/** Controller deriving the row from the shared mirror and writing the default through it. */
 export class PermissionPresetSettingsController {
   /** Row snapshot consumed through a bound selector hook. */
   readonly store: SnapshotStore<PermissionSettingsState> = createSnapshotStore({
@@ -86,57 +90,50 @@ export class PermissionPresetSettingsController {
     revision: 0,
   })
 
-  private generation = 0
-  private view: SettingsNamespaceView | undefined
+  private following: (() => void) | undefined
+  private saving = false
+  private disposed = false
 
-  /** @param api - Settings wire face. */
+  /**
+   * @param describeFace - the shared mirror's read/fold face (descriptor and schema source).
+   * @param api - settings wire face for the `defaultPreset` write.
+   * @param schema - settings-owned schema operations.
+   */
   constructor(
+    private readonly describeFace: SettingsDescribeFace,
     private readonly api: Pick<IApiClient, 'settings'>,
     private readonly schema: SettingsSchemaService,
   ) {}
 
   /**
-   * Refresh the permission descriptor. Latest request wins.
-   * @returns nothing; {@link store} carries success or failure.
+   * Begin following the mirror (idempotent) and reflect its current answer.
+   * @returns settlement once the snapshot reflects the mirror.
    */
   async load(): Promise<void> {
-    const generation = ++this.generation
+    if (this.disposed) return
+    this.following ??= this.describeFace.subscribe(() => { this.derive() })
     this.store.update((state) => {
       state.status = 'loading'
       state.error = null
     })
-    try {
-      const response = await this.api.settings.describe({})
-      if (!response.result.ok) throw new Error(response.result.error.message)
-      if (generation !== this.generation) return
-      const view = response.result.value.namespaces.find(entry => entry.ns === PERMISSION_SETTINGS_NS)
-      if (view === undefined) {
-        this.view = undefined
-        this.store.update((state) => {
-          state.status = 'unavailable'
-          state.writable = false
-          state.currentValue = ''
-          state.options = []
-        })
-        return
-      }
-      this.accept(view, response.result.value.writable)
-    } catch (error) {
-      if (generation !== this.generation) return
-      this.fail(error)
-    }
+    await this.describeFace.ensure()
+    this.derive()
   }
 
   /**
    * Persist one preset as the default for subsequently created sessions.
+   * A selection made while one is already saving is ignored — the row's
+   * control is disabled during the save, so this only drops programmatic
+   * double-submits rather than user intent.
    * @param preset - advertised preset key.
    * @returns nothing; {@link store} carries success or failure.
    */
   async select(preset: string): Promise<void> {
-    const view = this.view
     const state = this.store.getSnapshot()
-    if (view === undefined || !state.writable) return
-    const generation = ++this.generation
+    const view = this.describeFace.getSnapshot().view?.namespaces
+      .find(entry => entry.ns === PERMISSION_SETTINGS_NS)
+    if (view === undefined || !state.writable || this.saving) return
+    this.saving = true
     this.store.update((draft) => {
       draft.status = 'saving'
       draft.error = null
@@ -147,32 +144,70 @@ export class PermissionPresetSettingsController {
         ops: [{ op: 'set', path: ['defaultPreset'], value: preset }],
         expectedRevision: view.revision,
       })
-      if (generation !== this.generation) return
       if (!response.result.ok) throw new Error(response.result.error.message)
-      this.accept(response.result.value, true)
+      this.saving = false
+      if (this.disposed) return
+      // The mirror publish reaches this row's own subscription, so the fold
+      // is also what republishes the accepted value here.
+      this.describeFace.acceptView(response.result.value)
     } catch (error) {
-      if (generation !== this.generation) return
+      this.saving = false
+      if (this.disposed) return
       this.fail(error)
     }
   }
 
-  /** Stop in-flight responses from publishing after plugin disposal. */
+  /** Stop following the mirror; later publishes leave the snapshot alone. */
   dispose(): void {
-    this.generation += 1
-    this.view = undefined
+    this.disposed = true
+    this.following?.()
+    this.following = undefined
   }
 
-  private accept(view: SettingsNamespaceView, writable: boolean): void {
-    const resolved = permissionDefaultOf(view, this.schema)
-    this.view = view
-    this.store.update((state) => {
-      state.status = 'ready'
-      state.error = null
-      state.writable = writable
-      state.currentValue = resolved.currentValue
-      state.options = resolved.options
-      state.revision = view.revision
-    })
+  private derive(): void {
+    if (this.disposed || this.saving) return
+    const mirrored = this.describeFace.getSnapshot()
+    if (mirrored.status === 'unavailable') {
+      // The terminal non-loopback state: settings RPCs are loopback-only, so
+      // the row hides itself exactly like an unserved namespace.
+      this.store.update((state) => {
+        state.status = 'unavailable'
+        state.writable = false
+        state.currentValue = ''
+        state.options = []
+      })
+      return
+    }
+    if (mirrored.view === undefined) {
+      // A held failure with no answer is a failed row; without one the read
+      // is still in flight and the row keeps its loading state.
+      if (mirrored.error !== null) this.fail(new Error(mirrored.error))
+      return
+    }
+    const view = mirrored.view.namespaces.find(entry => entry.ns === PERMISSION_SETTINGS_NS)
+    if (view === undefined) {
+      this.store.update((state) => {
+        state.status = 'unavailable'
+        state.writable = false
+        state.currentValue = ''
+        state.options = []
+      })
+      return
+    }
+    try {
+      const resolved = permissionDefaultOf(view, this.schema)
+      const { writable } = mirrored.view
+      this.store.update((state) => {
+        state.status = 'ready'
+        state.error = null
+        state.writable = writable
+        state.currentValue = resolved.currentValue
+        state.options = resolved.options
+        state.revision = view.revision
+      })
+    } catch (error) {
+      this.fail(error)
+    }
   }
 
   private fail(error: unknown): void {
@@ -182,12 +217,3 @@ export class PermissionPresetSettingsController {
     })
   }
 }
-
-/**
- * Refetch only after the row has opened once.
- * @param controller - permission settings controller.
- */
-export function refreshPermissionIfLoaded(controller: PermissionPresetSettingsController): void {
-  if (controller.store.getSnapshot().status === 'idle') return
-  void controller.load()
-}

packages/client/ui-permission-presets/tests/browser-plugin.client.spec.ts

@@ -13,8 +13,8 @@ import { describe, expect, it } from 'vitest'
 import { SlotRegistry, type SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import type { CommandDecoration } from '@deepseek-ai/dsh-client-ui-commands/client'
-import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
 import type { PermissionSelect } from '@deepseek-ai/dsh-permission-presets/client'
 import {
   PermissionRow, type PermissionRowInjected,
@@ -42,7 +42,6 @@ async function bench() {
   // The plugin injects `remote`; forwarded events reach it through the same
   // `$dispatch` handoff the connection sink makes.
   new TestRemote(ctx)
-  new SettingsSchemaService(ctx)
   ctx.slots.register({
     name: 'root',
     children: {
@@ -60,6 +59,7 @@ async function bench() {
       },
     },
   } as never)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   let decoration: CommandDecoration | undefined
   ctx.provide('commandUi', {
     decorate(c: CommandDecoration) {

packages/client/ui-permission-presets/tests/permission-presets-row.client.spec.tsx

@@ -7,8 +7,17 @@ import type { SettingsNamespaceView } from '@deepseek-ai/dsh-api-remotes/client'
 import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
 import { PermissionRow, type PermissionRowProps } from '../src/client/PermissionRow.tsx'
 import { en } from '../src/client/locales.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { PermissionPresetSettingsController } from '../src/client/settings-store.ts'
 
+const schema = new SettingsSchemaService(new Context())
+
+/** Controller over a real mirror derived from the same fake wire. */
+function derivedController(api: { settings: object }) {
+  const wire = api as never
+  return new PermissionPresetSettingsController(new SettingsDescribeMirror(wire), wire, schema)
+}
+
 afterEach(cleanup)
 
 const SCHEMA = {
@@ -22,12 +31,6 @@ const SCHEMA = {
   },
 }
 
-const schema = new SettingsSchemaService(new Context())
-
-function createController(api: ConstructorParameters<typeof PermissionPresetSettingsController>[0]) {
-  return new PermissionPresetSettingsController(api, schema)
-}
-
 function view(defaultPreset: string, revision = 0): SettingsNamespaceView {
   return {
     ns: 'permission',
@@ -66,11 +69,11 @@ function mount(controller: PermissionPresetSettingsController) {
 describe('PermissionRow', () => {
   it('loads the descriptor, opens the menu, and selects a new default', async () => {
     const mutate = vi.fn(() => Promise.resolve(ok(view('workspace-write', 1))))
-    const controller = createController({
+    const controller = derivedController({
       settings: {
         describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
         mutate,
-      } as never,
+      },
     })
     mount(controller)
     const button = await screen.findByRole('button', { name: 'Read Only' })
@@ -93,11 +96,11 @@ describe('PermissionRow', () => {
 
   it('requires explicit acknowledgement before saving Full access', async () => {
     const mutate = vi.fn(() => Promise.resolve(ok(view('danger-full-access', 1))))
-    const controller = createController({
+    const controller = derivedController({
       settings: {
         describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
         mutate,
-      } as never,
+      },
     })
     mount(controller)
     fireEvent.click(await screen.findByRole('button', { name: 'Read Only' }))
@@ -117,21 +120,21 @@ describe('PermissionRow', () => {
   })
 
   it('hides an unavailable namespace and disables a read-only provider', async () => {
-    const absent = createController({
+    const absent = derivedController({
       settings: {
         describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [] })),
         mutate: vi.fn(),
-      } as never,
+      },
     })
     const rendered = mount(absent)
     await waitFor(() => { expect(rendered.container.textContent).toBe('') })
     rendered.unmount()
 
-    const readonly = createController({
+    const readonly = derivedController({
       settings: {
         describe: () => Promise.resolve(ok({ writable: false, hasDocument: false, namespaces: [view('read-only')] })),
         mutate: vi.fn(),
-      } as never,
+      },
     })
     mount(readonly)
     expect((await screen.findByRole('button', { name: 'Read Only' })).hasAttribute('disabled')).toBe(true)
@@ -142,7 +145,7 @@ describe('PermissionRow', () => {
       writable: boolean
       namespaces: SettingsNamespaceView[]
     }>>>()
-    const controller = createController({
+    const controller = derivedController({
       settings: {
         describe: () => describe.promise,
         mutate: () => Promise.resolve({
@@ -152,7 +155,7 @@ describe('PermissionRow', () => {
             error: { code: 'settings-conflict', message: 'changed elsewhere', details: {} },
           },
         }),
-      } as never,
+      },
     })
     mount(controller)
     expect((await screen.findByRole('button', { name: 'Loading' })).hasAttribute('disabled')).toBe(true)

packages/client/ui-permission-presets/tests/settings-store.client.spec.ts

@@ -2,8 +2,9 @@ import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import type { SettingsNamespaceView } from '@deepseek-ai/dsh-api-remotes/client'
 import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import {
-  PermissionPresetSettingsController, permissionDefaultOf, refreshPermissionIfLoaded,
+  PermissionPresetSettingsController, permissionDefaultOf,
 } from '../src/client/settings-store.ts'
 
 const SCHEMA = {
@@ -22,10 +23,6 @@ function resolveDefault(view: SettingsNamespaceView) {
   return permissionDefaultOf(view, schema)
 }
 
-function createController(api: ConstructorParameters<typeof PermissionPresetSettingsController>[0]) {
-  return new PermissionPresetSettingsController(api, schema)
-}
-
 function view(defaultPreset: string, revision = 0, schema: SettingsNamespaceView['schema'] = SCHEMA): SettingsNamespaceView {
   return {
     ns: 'permission',
@@ -42,6 +39,13 @@ function ok<T>(value: T) {
   return { rpcId: 'test', result: { ok: true as const, value } }
 }
 
+/** The permission controller over a real mirror and one fake wire. */
+function permissionController(api: object) {
+  const wire = { settings: api } as never
+  const mirror = new SettingsDescribeMirror(wire)
+  return { mirror, controller: new PermissionPresetSettingsController(mirror, wire, schema) }
+}
+
 describe('permission settings store', () => {
   it('derives dynamic options and host labels from the descriptor schema', () => {
     expect(resolveDefault(view('read-only'))).toEqual({
@@ -104,9 +108,7 @@ describe('permission settings store', () => {
       namespaces: [view('read-only', 4)],
     })))
     const mutate = vi.fn(() => Promise.resolve(ok(view('workspace-write', 5))))
-    const controller = createController({
-      settings: { describe, mutate } as never,
-    })
+    const { controller } = permissionController({ describe, mutate })
     await controller.load()
     expect(controller.store.getSnapshot()).toMatchObject({
       status: 'ready',
@@ -125,126 +127,140 @@ describe('permission settings store', () => {
       currentValue: 'workspace-write',
       revision: 5,
     })
+    // The write answer folded into the mirror; no re-read followed.
+    expect(describe).toHaveBeenCalledTimes(1)
   })
 
   it('hides the row when the namespace is absent and contains write failures', async () => {
     const describe = vi.fn(() => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [] })))
-    const controller = createController({
-      settings: { describe, mutate: vi.fn() } as never,
-    })
+    const { controller } = permissionController({ describe, mutate: vi.fn() })
     await controller.load()
     expect(controller.store.getSnapshot().status).toBe('unavailable')
 
-    const failing = createController({
-      settings: {
-        describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
-        mutate: () => Promise.resolve({
-          rpcId: 'test',
-          result: {
-            ok: false as const,
-            error: { code: 'settings-conflict', message: 'stale', details: {} },
-          },
-        }),
-      } as never,
-    })
+    const failing = permissionController({
+      describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
+      mutate: () => Promise.resolve({
+        rpcId: 'test',
+        result: {
+          ok: false as const,
+          error: { code: 'settings-conflict', message: 'stale', details: {} },
+        },
+      }),
+    }).controller
     await failing.load()
     await failing.select('workspace-write')
     expect(failing.store.getSnapshot()).toMatchObject({ status: 'error', error: 'stale' })
   })
 
-  it('contains read failures, no-ops without a writable view, and ignores stale responses', async () => {
-    const first = Promise.withResolvers<ReturnType<typeof ok<{
-      writable: boolean
-      namespaces: SettingsNamespaceView[]
-    }>>>()
-    const describe = vi.fn()
-      .mockImplementationOnce(() => first.promise)
-      .mockResolvedValueOnce(ok({ writable: false, hasDocument: false, namespaces: [view('read-only', 2)] }))
+  it('contains read failures and no-ops without a writable view', async () => {
     const mutate = vi.fn()
-    const controller = createController({
-      settings: { describe, mutate } as never,
-    })
-    const stale = controller.load()
-    await controller.load()
-    first.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('workspace-write', 1)] }))
-    await stale
-    expect(controller.store.getSnapshot()).toMatchObject({
+    const readOnly = permissionController({
+      describe: () => Promise.resolve(ok({
+        writable: false, hasDocument: false, namespaces: [view('read-only', 2)],
+      })),
+      mutate,
+    }).controller
+    await readOnly.load()
+    expect(readOnly.store.getSnapshot()).toMatchObject({
       currentValue: 'read-only',
       writable: false,
       revision: 2,
     })
-    await controller.select('workspace-write')
+    await readOnly.select('workspace-write')
     expect(mutate).not.toHaveBeenCalled()
 
-    const rejected = createController({
-      settings: {
-        describe: () => Promise.resolve({
-          rpcId: 'test',
-          result: { ok: false as const, error: { code: 'internal', message: 'offline', details: {} } },
-        }),
-        mutate,
-      } as never,
-    })
+    const rejected = permissionController({
+      describe: () => Promise.resolve({
+        rpcId: 'test',
+        result: { ok: false as const, error: { code: 'internal', message: 'offline', details: {} } },
+      }),
+      mutate,
+    }).controller
     await rejected.select('workspace-write')
     await rejected.load()
     expect(rejected.store.getSnapshot()).toMatchObject({ status: 'error', error: 'offline' })
+    expect(mutate).not.toHaveBeenCalled()
+
+    const thrown = permissionController({
+      describe: async () => { throw 'disconnected' },
+      mutate,
+    }).controller
+    await thrown.load()
+    expect(thrown.store.getSnapshot()).toMatchObject({ status: 'error', error: 'disconnected' })
 
-    const thrown = createController({
+    const wire = {
       settings: {
-        // Promise consumers must contain unknown rejection values from a
-        // transport implementation, including non-Error legacy clients.
-        // oxlint-disable-next-line typescript/prefer-promise-reject-errors
-        describe: () => Promise.reject('disconnected'),
+        describe: () => Promise.resolve(ok({
+          writable: true, hasDocument: false, namespaces: [view('read-only')],
+        })),
         mutate,
-      } as never,
+      },
+    } as never
+    const mirror = new SettingsDescribeMirror(wire)
+    const malformed = new PermissionPresetSettingsController(mirror, wire, {
+      rehydrate: () => { throw 'schema disconnected' },
+    } as never)
+    await malformed.load()
+    expect(malformed.store.getSnapshot()).toMatchObject({
+      status: 'error', error: 'schema disconnected',
     })
-    await thrown.load()
-    expect(thrown.store.getSnapshot()).toMatchObject({ status: 'error', error: 'disconnected' })
   })
 
-  it('disposal suppresses in-flight reads and writes, and loaded invalidations refetch', async () => {
+  it('hides the row in a remote browser instead of loading forever', async () => {
+    const describeCall = vi.fn()
+    const mutate = vi.fn()
+    const wire = { settings: { describe: describeCall, mutate } } as never
+    const mirror = new SettingsDescribeMirror(wire, 'memory')
+    const controller = new PermissionPresetSettingsController(mirror, wire, schema)
+    await controller.load()
+    expect(controller.store.getSnapshot().status).toBe('unavailable')
+    await controller.select('workspace-write')
+    expect(describeCall).not.toHaveBeenCalled()
+    expect(mutate).not.toHaveBeenCalled()
+  })
+
+  it('follows a mirror refresh without an own read once loaded', async () => {
+    const describe = vi.fn()
+      .mockResolvedValueOnce(ok({ writable: true, hasDocument: false, namespaces: [view('read-only', 1)] }))
+      .mockResolvedValueOnce(ok({ writable: true, hasDocument: false, namespaces: [view('workspace-write', 2)] }))
+    const { mirror, controller } = permissionController({ describe, mutate: vi.fn() })
+    await controller.load()
+    expect(controller.store.getSnapshot()).toMatchObject({ currentValue: 'read-only' })
+
+    await mirror.load()
+
+    expect(controller.store.getSnapshot()).toMatchObject({ currentValue: 'workspace-write', revision: 2 })
+  })
+
+  it('disposal stops deriving and suppresses in-flight writes', async () => {
+    const neverRead = vi.fn()
+    const { controller: neverLoaded } = permissionController({ describe: neverRead, mutate: vi.fn() })
+    neverLoaded.dispose()
+    await neverLoaded.load()
+    expect(neverLoaded.store.getSnapshot().status).toBe('idle')
+    expect(neverRead).not.toHaveBeenCalled()
+
     const read = Promise.withResolvers<ReturnType<typeof ok<{
       writable: boolean
       namespaces: SettingsNamespaceView[]
     }>>>()
-    const describe = vi.fn(() => read.promise)
-    const idle = createController({ settings: { describe, mutate: vi.fn() } as never })
-    refreshPermissionIfLoaded(idle)
-    expect(describe).not.toHaveBeenCalled()
+    const { mirror, controller: idle } = permissionController({ describe: () => read.promise, mutate: vi.fn() })
     const loading = idle.load()
     idle.dispose()
     read.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] }))
-    await loading
+    await Promise.all([loading, mirror.load()])
     expect(idle.store.getSnapshot().status).toBe('loading')
 
-    const rejectedRead = Promise.withResolvers<ReturnType<typeof ok<{
-      writable: boolean
-      namespaces: SettingsNamespaceView[]
-    }>>>()
-    const disposedRead = createController({
-      settings: { describe: () => rejectedRead.promise, mutate: vi.fn() } as never,
-    })
-    const reading = disposedRead.load()
-    disposedRead.dispose()
-    rejectedRead.reject(new Error('late read'))
-    await reading
-    expect(disposedRead.store.getSnapshot().status).toBe('loading')
-
     const mutation = Promise.withResolvers<ReturnType<typeof ok<SettingsNamespaceView>>>()
-    const activeDescribe = vi.fn(() => Promise.resolve(ok({
-      writable: true,
-      hasDocument: false,
-      namespaces: [view('read-only')],
-    })))
-    const active = createController({
-      settings: {
-        describe: activeDescribe,
-        mutate: () => mutation.promise,
-      } as never,
+    const { controller: active } = permissionController({
+      describe: () => Promise.resolve(ok({
+        writable: true,
+        hasDocument: false,
+        namespaces: [view('read-only')],
+      })),
+      mutate: () => mutation.promise,
     })
     await active.load()
-    refreshPermissionIfLoaded(active)
-    await vi.waitFor(() => { expect(activeDescribe).toHaveBeenCalledTimes(2) })
     const saving = active.select('workspace-write')
     active.dispose()
     mutation.resolve(ok(view('workspace-write', 1)))
@@ -252,11 +268,9 @@ describe('permission settings store', () => {
     expect(active.store.getSnapshot().status).toBe('saving')
 
     const rejectedMutation = Promise.withResolvers<ReturnType<typeof ok<SettingsNamespaceView>>>()
-    const disposedWrite = createController({
-      settings: {
-        describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
-        mutate: () => rejectedMutation.promise,
-      } as never,
+    const { controller: disposedWrite } = permissionController({
+      describe: () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [view('read-only')] })),
+      mutate: () => rejectedMutation.promise,
     })
     await disposedWrite.load()
     const writing = disposedWrite.select('workspace-write')

packages/client/ui-settings-general/src/client/index.ts

@@ -24,7 +24,7 @@ import { CloseLabel, HeaderContent, TriggerContent } from './chrome.tsx'
 import { GeneralSection } from './GeneralSection.tsx'
 import { SettingsDocumentAction } from './SettingsDocumentAction.tsx'
 import type { SettingsDocumentActionInjected } from './SettingsDocumentAction.tsx'
-import { refreshDocumentIfLoaded, SettingsDocumentStore } from './settings-document-store.ts'
+import { SettingsDocumentStore } from './settings-document-store.ts'
 import { en, zh, type SettingsKey } from './locales.ts'
 
 export type {
@@ -53,7 +53,7 @@ const NS = 'settings'
  * ui-settings' apply, whose activation order relative to this one is NOT
  * constrained; registrations depend on their slots through `slots.inject()`.
  */
-export const inject = ['slots', 'locale', 'connection']
+export const inject = ['slots', 'locale', 'connection', 'settingsScope']
 
 /**
  * Register the `settings` dictionaries, the chrome content, and the General
@@ -68,8 +68,10 @@ export function apply(ctx: ClientContext): void {
   // locale/change re-registration wiring.
   const t = ctx.locale.bind(NS)
   const connection = ctx.get('connection') as ConnectionHandle
+  // The action follows the shared describe mirror, whose owning plugin
+  // already refreshes it on document commits and reconnects.
   const documentController = connection.isLoopback
-    ? new SettingsDocumentStore(connection.api)
+    ? new SettingsDocumentStore(connection.api, ctx.settingsScope.describe())
     : undefined
   const documentInjected = documentController === undefined
     ? undefined
@@ -77,9 +79,7 @@ export function apply(ctx: ClientContext): void {
       controller: documentController,
       hooks: { snapshot: documentController.store },
     })
-  ctx.effect(() => ctx.on('connection/reset', () => {
-    refreshDocumentIfLoaded(documentController)
-  }), 'ui-settings-general: metadata invalidations')
+  ctx.effect(() => () => { documentController?.dispose() }, 'ui-settings-general: document action directory')
   // The settings shell: this package occupies the sidebar-owned hole and
   // declares the settings slots. Ledger → nav-row projection as an observable
   // source (uSES contract: getSnapshot returns the cached rows until the

packages/client/ui-settings-general/src/client/settings-document-store.ts

@@ -2,6 +2,7 @@
 
 import type { IApiClient } from '@deepseek-ai/dsh-api-remotes/client'
 import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type { SettingsDescribeFace } from '@deepseek-ai/dsh-client-ui-settings/client'
 
 /** Browser state of the Host-owned settings document. */
 export interface SettingsDocumentState {
@@ -17,51 +18,37 @@ function messageOf(error: unknown): string {
   return error instanceof Error ? error.message : String(error)
 }
 
-/** Loads local-document availability and invokes the pathless Host-owned open operation. */
+/** Derives local-document availability from the shared mirror and invokes the pathless Host-owned open operation. */
 export class SettingsDocumentStore {
   /** uSES-safe state source shared by the registered header action. */
   readonly store: SnapshotStore<SettingsDocumentState> = createSnapshotStore({
     status: 'idle', opening: false, error: null,
   })
 
-  private generation = 0
+  private following: (() => void) | undefined
 
   /**
-   * @param api - loopback settings wire face that reports and opens the provider document.
+   * @param api - loopback settings wire face that opens the provider document.
+   * @param describeFace - the shared mirror's describe face (`hasDocument` source).
    */
-  constructor(private readonly api: Pick<IApiClient, 'settings'>) {}
+  constructor(
+    private readonly api: Pick<IApiClient, 'settings'>,
+    private readonly describeFace: SettingsDescribeFace,
+  ) {}
 
   /**
-   * Load whether the current provider owns a local document.
-   * @returns after the latest metadata response updates the store.
+   * Begin following the mirror (idempotent) and reflect whether the current
+   * provider owns a local document.
+   * @returns settlement once the snapshot reflects the mirror.
    */
   async load(): Promise<void> {
-    const generation = ++this.generation
+    this.following ??= this.describeFace.subscribe(() => { this.derive() })
     this.store.update((state) => {
       state.status = 'loading'
       state.error = null
     })
-    try {
-      const { result } = await this.api.settings.describe({})
-      if (generation !== this.generation) return
-      if (!result.ok) {
-        this.store.update((state) => {
-          state.status = 'unavailable'
-          state.error = result.error.message
-        })
-        return
-      }
-      this.store.update((state) => {
-        state.status = result.value.hasDocument ? 'ready' : 'unavailable'
-        state.error = null
-      })
-    } catch (error) {
-      if (generation !== this.generation) return
-      this.store.update((state) => {
-        state.status = 'unavailable'
-        state.error = messageOf(error)
-      })
-    }
+    await this.describeFace.ensure()
+    this.derive()
   }
 
   /**
@@ -84,13 +71,30 @@ export class SettingsDocumentStore {
       this.store.update((state) => { state.opening = false })
     }
   }
-}
 
-/**
- * Refresh document availability after reconnect only when a surface has already requested it.
- * @param controller - optional loopback document state owner.
- */
-export function refreshDocumentIfLoaded(controller: SettingsDocumentStore | undefined): void {
-  if (controller === undefined || controller.store.getSnapshot().status === 'idle') return
-  void controller.load()
+  /** Stop following the mirror. */
+  dispose(): void {
+    this.following?.()
+    this.following = undefined
+  }
+
+  private derive(): void {
+    const mirrored = this.describeFace.getSnapshot()
+    if (mirrored.view === undefined) {
+      // A held failure with no answer means the document cannot be located;
+      // without one the read is still in flight and loading stands.
+      if (mirrored.error !== null) {
+        this.store.update((state) => {
+          state.status = 'unavailable'
+          state.error = mirrored.error
+        })
+      }
+      return
+    }
+    const { hasDocument } = mirrored.view
+    this.store.update((state) => {
+      state.status = hasDocument ? 'ready' : 'unavailable'
+      state.error = null
+    })
+  }
 }

packages/client/ui-settings-general/tests/apply.client.spec.ts

@@ -4,16 +4,17 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-settings-general/client'
 import { CloseLabel, HeaderContent, TriggerContent } from '../src/client/chrome.tsx'
 import { GeneralSection } from '../src/client/GeneralSection.tsx'
 import { SettingsDocumentAction } from '../src/client/SettingsDocumentAction.tsx'
 import type { SettingsDocumentActionInjected } from '../src/client/SettingsDocumentAction.tsx'
 
-// 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')
+// These specs assert the shipped Chinese copy. The lane has no jsdom `window`,
+// so browser-language detection never runs and a fresh LocaleRuntime opens on
+// FALLBACK_LOCALE (en); bench stages zh explicitly on the locale instead.
 
 /** The seats this plugin fills for a loopback browser (slot name → expected component). */
 const SEATS = [
@@ -28,6 +29,7 @@ async function bench(isLoopback = true) {
   const ctx = new Context()
   await ctx.plugin(SlotRegistry).await()
   const locale = new LocaleRuntime(ctx)
+  locale.setLocale('zh')
   ctx.provide('locale', locale)
   const settingsDescribe = vi.fn(() => Promise.resolve({
     rpcId: 'settings-general' as never,
@@ -48,6 +50,8 @@ async function bench(isLoopback = true) {
     api: { settings: { describe: settingsDescribe, openDocument: settingsOpenDocument } },
     isLoopback,
   } as never)
+  new TestRemote(ctx)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return { ctx, slots: ctx.get('slots') as SlotRegistry, locale, settingsDescribe, settingsOpenDocument }
 }
 
@@ -75,7 +79,7 @@ function generalEntry(slots: SlotRegistry) {
 
 describe('ui-settings-general apply', () => {
   it('declares the services it uses', () => {
-    expect(inject).toEqual(['slots', 'locale', 'connection'])
+    expect(inject).toEqual(['slots', 'locale', 'connection', 'settingsScope'])
   })
 
   it('fills all five seats for declarations before or after apply', async () => {
@@ -149,16 +153,17 @@ describe('ui-settings-general apply', () => {
     expect(resolveSlotLabel(generalEntry(b.slots)!.options.label)).toBe('通用设置')
   })
 
-  it('refreshes loaded document availability on reconnect without reading it eagerly', async () => {
+  it('reads availability from the shared mirror and follows its reconnect refresh', async () => {
     const b = await bench()
     declare(b.slots)
     await b.ctx.plugin({ inject: [...inject], apply }).await()
     const entry = b.slots.entries('settings.action')[0]!
     const { controller } = (entry.inject as unknown as () => SettingsDocumentActionInjected)()
-    b.ctx.emit('connection/reset')
-    expect(b.settingsDescribe).not.toHaveBeenCalled()
+    // The mirror read once at its own boot; the action's load adds no read.
+    await vi.waitFor(() => { expect(b.settingsDescribe).toHaveBeenCalledOnce() })
     await controller.load()
     expect(b.settingsDescribe).toHaveBeenCalledOnce()
+    expect(controller.store.getSnapshot().status).toBe('ready')
     b.ctx.emit('connection/reset')
     await vi.waitFor(() => { expect(b.settingsDescribe).toHaveBeenCalledTimes(2) })
   })

packages/client/ui-settings-general/tests/components.client.spec.tsx

@@ -7,7 +7,14 @@ import { GeneralSection } from '../src/client/GeneralSection.tsx'
 import { CloseLabel, HeaderContent, TriggerContent } from '../src/client/chrome.tsx'
 import type { TriggerContentProps } from '../src/client/chrome.tsx'
 import { SettingsDocumentAction } from '../src/client/SettingsDocumentAction.tsx'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { SettingsDocumentStore } from '../src/client/settings-document-store.ts'
+
+/** Store over a real mirror derived from the same fake wire. */
+function derivedDocumentStore(api: object) {
+  const wire = api as never
+  return new SettingsDocumentStore(wire, new SettingsDescribeMirror(wire))
+}
 import { en } from '../src/client/locales.ts'
 
 afterEach(cleanup)
@@ -64,7 +71,7 @@ describe('SettingsDocumentAction', () => {
       rpcId: 'document-open' as never,
       result: { ok: true as const, value: { opened: true as const } },
     }))
-    const controller = new SettingsDocumentStore({
+    const controller = derivedDocumentStore({
       settings: {
         describe: vi.fn(() => Promise.resolve({
           rpcId: 'document-action' as never,
@@ -75,7 +82,7 @@ describe('SettingsDocumentAction', () => {
         })),
         openDocument,
       },
-    } as never)
+    })
     render(<SettingsDocumentAction
       {...kit}
       t={t}
@@ -87,7 +94,7 @@ describe('SettingsDocumentAction', () => {
     await waitFor(() => { expect(openDocument).toHaveBeenCalledWith({}) })
   })
 
-  it('stays absent without a document and retries availability after remount', async () => {
+  it('stays absent without a document and follows a mirror refresh to available', async () => {
     const describe = vi.fn()
       .mockResolvedValueOnce({
         rpcId: 'document-action-absent' as never,
@@ -97,12 +104,9 @@ describe('SettingsDocumentAction', () => {
         rpcId: 'document-action-ready' as never,
         result: { ok: true as const, value: { writable: true, hasDocument: true, namespaces: [] } },
       })
-    const controller = new SettingsDocumentStore({
-      settings: {
-        describe,
-        openDocument: vi.fn(),
-      },
-    } as never)
+    const wire = { settings: { describe, openDocument: vi.fn() } } as never
+    const mirror = new SettingsDescribeMirror(wire)
+    const controller = new SettingsDocumentStore(wire, mirror)
     const first = render(<SettingsDocumentAction
       {...kit}
       t={t}
@@ -118,12 +122,17 @@ describe('SettingsDocumentAction', () => {
       controller={controller}
       useSnapshot={bindSnapshotSelector(controller.store)}
     />)
+    // A remount alone re-reads nothing; availability moves with the mirror's
+    // own refresh (a document commit or reconnect in production).
+    await waitFor(() => { expect(controller.store.getSnapshot().status).toBe('unavailable') })
+    expect(describe).toHaveBeenCalledTimes(1)
+    await mirror.load()
     expect(await screen.findByRole('button', { name: 'Open configuration file' })).toBeTruthy()
     expect(describe).toHaveBeenCalledTimes(2)
   })
 
   it('keeps the action available and reports a native-open failure', async () => {
-    const controller = new SettingsDocumentStore({
+    const controller = derivedDocumentStore({
       settings: {
         describe: vi.fn(() => Promise.resolve({
           rpcId: 'document-action' as never,
@@ -137,7 +146,7 @@ describe('SettingsDocumentAction', () => {
           result: { ok: false as const, error: { code: 'internal' as const, message: 'xdg-open missing', details: {} } },
         })),
       },
-    } as never)
+    })
     render(<SettingsDocumentAction
       {...kit}
       t={t}

packages/client/ui-settings-general/tests/settings-document-store.client.spec.ts

@@ -1,7 +1,14 @@
 import { describe, expect, it, vi } from 'vitest'
 import type { RpcResponse } from '@deepseek-ai/dsh-api-remotes/client'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { SettingsDocumentStore } from '../src/client/settings-document-store.ts'
 
+/** Store over a real mirror derived from the same fake wire. */
+function derivedDocumentStore(api: object) {
+  const wire = api as never
+  return new SettingsDocumentStore(wire, new SettingsDescribeMirror(wire))
+}
+
 function response(hasDocument = false): RpcResponse<{
   writable: boolean
   hasDocument: boolean
@@ -34,7 +41,7 @@ describe('SettingsDocumentStore', () => {
   it('loads provider metadata and asks the settings domain to open its document', async () => {
     const describe = vi.fn(() => Promise.resolve(response(true)))
     const openDocument = vi.fn(() => Promise.resolve(opened()))
-    const controller = new SettingsDocumentStore({ settings: { describe, openDocument } } as never)
+    const controller = derivedDocumentStore({ settings: { describe, openDocument } })
     await controller.load()
     expect(controller.store.getSnapshot()).toEqual({
       status: 'ready', opening: false, error: null,
@@ -45,23 +52,23 @@ describe('SettingsDocumentStore', () => {
 
   it('marks absent or failed metadata unavailable without opening anything', async () => {
     const openDocument = vi.fn(() => Promise.resolve(opened()))
-    const absent = new SettingsDocumentStore({
+    const absent = derivedDocumentStore({
       settings: { describe: () => Promise.resolve(response()), openDocument },
-    } as never)
+    })
     await absent.load()
     await absent.open()
     expect(absent.store.getSnapshot().status).toBe('unavailable')
     expect(openDocument).not.toHaveBeenCalled()
 
-    const failed = new SettingsDocumentStore({
+    const failed = derivedDocumentStore({
       settings: { describe: () => Promise.reject(new Error('offline')), openDocument },
-    } as never)
+    })
     await failed.load()
     expect(failed.store.getSnapshot()).toMatchObject({ status: 'unavailable', error: 'offline' })
 
-    const rejected = new SettingsDocumentStore({
+    const rejected = derivedDocumentStore({
       settings: { describe: () => Promise.resolve(describeFailed('provider failed')), openDocument },
-    } as never)
+    })
     await rejected.load()
     expect(rejected.store.getSnapshot()).toMatchObject({
       status: 'unavailable', error: 'provider failed',
@@ -71,9 +78,9 @@ describe('SettingsDocumentStore', () => {
   it('collapses concurrent open gestures and recovers after a failure', async () => {
     let resolveOpen!: (response: RpcResponse<{ opened: true }>) => void
     const openDocument = vi.fn(() => new Promise<RpcResponse<{ opened: true }>>((resolve) => { resolveOpen = resolve }))
-    const controller = new SettingsDocumentStore({
+    const controller = derivedDocumentStore({
       settings: { describe: () => Promise.resolve(response(true)), openDocument },
-    } as never)
+    })
     await controller.load()
     const first = controller.open()
     const second = controller.open()
@@ -88,23 +95,15 @@ describe('SettingsDocumentStore', () => {
     })
   })
 
-  it('ignores stale metadata completions and reports non-Error native failures', async () => {
-    let resolveFirst!: (value: ReturnType<typeof response>) => void
-    const first = new Promise<ReturnType<typeof response>>((resolve) => { resolveFirst = resolve })
-    const describe = vi.fn()
-      .mockReturnValueOnce(first)
-      .mockResolvedValueOnce(response(true))
+  it('reports non-Error native failures and recovers availability via a mirror refresh', async () => {
     let rejectOpen!: (reason?: unknown) => void
-    const controller = new SettingsDocumentStore({
+    const controller = derivedDocumentStore({
       settings: {
-        describe,
+        describe: vi.fn(() => Promise.resolve(response(true))),
         openDocument: () => new Promise((_, reject) => { rejectOpen = reject }),
       },
-    } as never)
-    const stale = controller.load()
+    })
     await controller.load()
-    resolveFirst(response())
-    await stale
     expect(controller.store.getSnapshot().status).toBe('ready')
     const opening = controller.open()
     rejectOpen('native unavailable')
@@ -113,20 +112,21 @@ describe('SettingsDocumentStore', () => {
       status: 'ready', opening: false, error: 'native unavailable',
     })
 
-    let rejectFirst!: (error: Error) => void
-    const rejectedFirst = new Promise<ReturnType<typeof response>>((_, reject) => { rejectFirst = reject })
-    const caught = new SettingsDocumentStore({
+    // A first read that failed leaves the action unavailable with the miss
+    // recorded; the mirror's next refresh (a commit or reconnect) recovers it.
+    const wire = {
       settings: {
         describe: vi.fn()
-          .mockReturnValueOnce(rejectedFirst)
+          .mockRejectedValueOnce(new Error('offline'))
           .mockResolvedValueOnce(response(true)),
         openDocument: vi.fn(),
       },
-    } as never)
-    const staleRejection = caught.load()
+    } as never
+    const mirror = new SettingsDescribeMirror(wire)
+    const caught = new SettingsDocumentStore(wire, mirror)
     await caught.load()
-    rejectFirst(new Error('stale offline'))
-    await staleRejection
+    expect(caught.store.getSnapshot()).toMatchObject({ status: 'unavailable', error: 'offline' })
+    await mirror.load()
     expect(caught.store.getSnapshot()).toMatchObject({ status: 'ready', error: null })
   })
 })

packages/client/ui-settings-general/tests/shell.client.spec.ts

@@ -2,6 +2,7 @@
 import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { apply, inject } from '../src/client/index.ts'
 import type { SettingsRootInjected } from '../src/client/shell-contract.ts'
 import { SettingsRoot } from '../src/client/SettingsRoot.tsx'
@@ -22,6 +23,7 @@ async function bench() {
     isLoopback: false,
   } as never)
   ctx.provide('remote', { $on: () => () => {} } as never)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return { ctx, slots: ctx.get('slots') as SlotRegistry }
 }
 
@@ -49,7 +51,7 @@ const CHILD_SPECS = {
 
 describe('ui-settings apply', () => {
   it('declares only the slot registry (a pure composition face, no locale)', () => {
-    expect(inject).toEqual(['slots', 'locale', 'connection'])
+    expect(inject).toEqual(['slots', 'locale', 'connection', 'settingsScope'])
   })
 
   it('registers the shell and declares every child slot, before or after the declaration', async () => {

packages/client/ui-settings-models/src/client/index.ts

@@ -21,7 +21,7 @@ import { DeepSeekOnboardingDialog } from './DeepSeekOnboardingDialog.tsx'
 import type { DeepSeekOnboardingInjected } from './DeepSeekOnboardingDialog.tsx'
 import { WelcomeNotice } from './WelcomeNotice.tsx'
 import type { WelcomeNoticeInjected } from './WelcomeNotice.tsx'
-import { refreshWelcomeIfLoaded, WelcomeNoticeStore } from './welcome-store.ts'
+import { decodeWelcomeSection, WelcomeNoticeStore } from './welcome-store.ts'
 import { ModelsSettingsStore } from './store.ts'
 import { createSettingsSchemaOperations } from './schema-operations.ts'
 import { en, zh, type ModelsKey } from './locales.ts'
@@ -56,7 +56,7 @@ export function refreshIfLoaded(controller: ModelsSettingsStore): void {
  * ui-settings' apply, whose activation order relative to this one is NOT
  * constrained; registration depends on each slot through `slots.inject()`.
  */
-export const inject = ['slots', 'locale', 'connection', 'remote', 'settingsSchema']
+export const inject = ['slots', 'locale', 'connection', 'remote', 'settingsScope', 'settingsSchema']
 
 /**
  * Register the Models section once the `settings.section` declaration is on
@@ -69,7 +69,7 @@ export function apply(ctx: ClientContext): void {
 
   const connection = ctx.get('connection') as ConnectionHandle
   const schema = createSettingsSchemaOperations(ctx.settingsSchema)
-  const controller = new ModelsSettingsStore(connection.api, schema)
+  const controller = new ModelsSettingsStore(connection.api, schema, ctx.settingsScope.describe())
   // Registration-time text (the nav label thunk) and the inject faces share
   // one bound translate; copy freshness rides the locale revision.
   const t = ctx.locale.bind(NS) as ModelsSectionInjected['t']
@@ -87,34 +87,35 @@ export function apply(ctx: ClientContext): void {
     schema,
     t,
   })
-  const welcomeController = new WelcomeNoticeStore(
-    connection.api,
-    connection.isLoopback ? 'host' : 'memory',
-  )
+  // The scope's own memory mode is what keeps a remote browser process-local,
+  // so the store needs no isLoopback branch of its own.
+  const welcomeController = new WelcomeNoticeStore(ctx.settingsScope.bind({
+    namespace: WELCOME_NOTICE_SETTINGS_NAMESPACE,
+    decode: decodeWelcomeSection,
+  }))
   const welcomeInjected = (): WelcomeNoticeInjected => ({
     controller: welcomeController,
     hooks: { welcome: welcomeController.store },
     t,
   })
 
-  // Pushed invalidations converge every open surface without polling: any
-  // settings/credentials/topology change refetches once the page loaded.
+  // Pushed invalidations converge every open surface without polling. The
+  // settingsScope injection makes ui-settings activate first, and remote
+  // dispatch preserves listener order; its listener therefore starts the
+  // mirror refresh before this store joins that refresh. The welcome notice
+  // follows its settings scope, so it needs no subscription here.
   ctx.effect(() => {
     const refreshModels = (): void => { refreshIfLoaded(controller) }
-    const refreshAll = (): void => {
-      refreshModels()
-      refreshWelcomeIfLoaded(welcomeController)
-    }
     const disposers = [
-      ctx.remote.$on('settings/document-updated', (ns) => {
-        refreshModels()
-        if (ns === WELCOME_NOTICE_SETTINGS_NAMESPACE) refreshWelcomeIfLoaded(welcomeController)
-      }),
+      ctx.remote.$on('settings/document-updated', () => { refreshModels() }),
       ctx.remote.$on('credentials/updated', refreshModels),
       ctx.remote.$on('llm/adapters-updated', refreshModels),
-      ctx.on('connection/reset', refreshAll),
+      ctx.on('connection/reset', refreshModels),
     ]
-    return () => { for (const dispose of disposers) dispose() }
+    return () => {
+      welcomeController.dispose()
+      for (const dispose of disposers) dispose()
+    }
   }, 'ui-settings-models: pushed invalidations')
 
   ctx.slots.inject('settings.section', () => ctx.slots.register({

packages/client/ui-settings-models/src/client/store.ts

@@ -1,6 +1,6 @@
 /**
  * Models settings page store: one snapshot joining the configurable-provider
- * directory (`llm.providers`), the settings namespaces (`settings.describe`),
+ * directory (`llm.providers`), the settings namespaces (shared settings mirror),
  * and the referenced credentials (`credentials.describe`). The host stays the
  * single fact source — every mutation writes through the wire and the page
  * re-renders from the next describe, pushed or refetched.
@@ -11,6 +11,7 @@ import type {
 } from '@deepseek-ai/dsh-api-remotes/client'
 import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type { SettingsDescribeFace } from '@deepseek-ai/dsh-client-ui-settings/client'
 import type { SettingsSchemaOperations } from './schema-operations.ts'
 
 /**
@@ -114,17 +115,21 @@ export class ModelsSettingsStore {
   private generation = 0
 
   /**
-   * @param api - the wire face (settings/credentials/llm domains).
+   * @param api - the wire face (credentials/llm domains, and settings writes).
+   * @param describeFace - the shared mirror's describe face (namespace views and writability).
    */
   constructor(
     private readonly api: Pick<IApiClient, 'settings' | 'credentials' | 'llm'>,
     private readonly schema: SettingsSchemaOperations,
+    private readonly describeFace: SettingsDescribeFace,
   ) {}
 
   /**
-   * Refresh the whole page snapshot: directory and namespaces in parallel,
-   * then one batched credential describe over every referenced ref. A
-   * failure keeps the last good rows and surfaces the error.
+   * Refresh the whole page snapshot: the provider directory and the mirror's
+   * settings answer in parallel, then one batched credential describe over
+   * every referenced ref. Provider failure or absence of an initial settings
+   * answer keeps the last good rows and surfaces an error; a failed settings
+   * refresh reuses the mirror's held view.
    * @returns nothing; the snapshot carries the outcome.
    */
   async load(): Promise<void> {
@@ -132,17 +137,20 @@ export class ModelsSettingsStore {
     this.store.update((s) => { s.status = 'loading'; s.error = null })
     let providers: ConfigurableProviderView[]
     let writable: boolean
-    let views: SettingsNamespaceView[]
+    let views: readonly SettingsNamespaceView[]
     try {
-      const [providersResponse, settingsResponse] = await Promise.all([
+      const [providersResponse] = await Promise.all([
         this.api.llm.providers({}),
-        this.api.settings.describe({}),
+        this.describeFace.ensure(),
       ])
       if (!providersResponse.result.ok) throw new Error(providersResponse.result.error.message)
-      if (!settingsResponse.result.ok) throw new Error(settingsResponse.result.error.message)
+      const mirrored = this.describeFace.getSnapshot()
+      if (mirrored.view === undefined) {
+        throw new Error(mirrored.error ?? 'settings are unavailable in this browser')
+      }
       providers = providersResponse.result.value.providers
-      writable = settingsResponse.result.value.writable
-      views = settingsResponse.result.value.namespaces
+      writable = mirrored.view.writable
+      views = mirrored.view.namespaces
     } catch (error) {
       if (generation !== this.generation) return
       this.store.update((s) => {

packages/client/ui-settings-models/src/client/welcome-store.ts

@@ -1,10 +1,14 @@
-/** Welcome-notice state, durable when the browser may use Host settings. */
+/**
+ * Welcome-notice state derived from the welcome settings scope. The scope is
+ * the transport: a loopback browser follows the durable Host section, while a
+ * remote browser's memory-mode scope never answers and the acknowledgement
+ * stays process-local here.
+ */
 
-import type { IApiClient, SettingsNamespaceView } from '@deepseek-ai/dsh-api-remotes/client'
-import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type { SettingsScope, SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import {
-  WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_SETTINGS_NAMESPACE, WELCOME_NOTICE_VERSION,
+  WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_VERSION,
 } from '../onboarding-copy.ts'
 
 /** State rendered by the welcome step. */
@@ -14,113 +18,123 @@ export interface WelcomeNoticeState {
   error: string | null
 }
 
-function messageOf(error: unknown): string {
-  return error instanceof Error ? error.message : String(error)
+/** The welcome section as the notice reads it. */
+export type WelcomeSection = Record<string, unknown>
+
+/**
+ * Accept any object section verbatim; a malformed durable value reads as an
+ * empty section, so the notice treats it as unacknowledged instead of leaving
+ * the scope stuck on its previous value.
+ * @param section - the wire section value.
+ * @returns the section object, or an empty one for non-object values.
+ */
+export function decodeWelcomeSection(section: unknown): WelcomeSection {
+  return typeof section === 'object' && section !== null && !Array.isArray(section)
+    ? section as WelcomeSection
+    : {}
 }
 
-function acknowledgementOf(view: SettingsNamespaceView): string | undefined {
-  if (typeof view.value !== 'object' || view.value === null) return undefined
-  const value = (view.value as Record<string, unknown>)[WELCOME_NOTICE_ACK_FIELD]
-  return typeof value === 'string' ? value : undefined
+/* v8 ignore next 3 -- closed-union default only defends future source widening */
+function assertNever(_value: never): never {
+  throw new Error('unexpected welcome settings status')
 }
 
 /** Coordinates durable Host acknowledgement or a process-local remote fallback. */
 export class WelcomeNoticeStore {
   /** uSES-safe state source shared by the registered welcome step. */
-  readonly store: SnapshotStore<WelcomeNoticeState> = createSnapshotStore({
+  readonly store: SnapshotStore<WelcomeNoticeState> = createSnapshotStore<WelcomeNoticeState>({
     status: 'idle', acknowledged: false, error: null,
   })
 
-  private generation = 0
+  private localAcknowledged = false
+  private saving = false
+  private following: (() => void) | undefined
 
   /**
-   * @param api - settings wire face used for durable reads and writes.
-   * @param persistence - remote browsers use memory because settings is loopback-only.
+   * @param scope - the welcome settings namespace scope; its memory mode is
+   * what keeps a remote browser process-local.
    */
-  constructor(
-    private readonly api: Pick<IApiClient, 'settings'>,
-    private readonly persistence: 'host' | 'memory' = 'host',
-  ) {}
+  constructor(private readonly scope: SettingsScope<WelcomeSection>) {}
 
-  /** Load the acknowledgement from Host settings or initialize process-local state. */
-  async load(): Promise<void> {
-    const generation = ++this.generation
-    if (this.persistence === 'memory') {
-      this.store.update((state) => { state.status = 'ready'; state.error = null })
-      return
+  /**
+   * Begin following the bound scope (idempotent) and publish its current answer.
+   * @returns settlement after the current answer is published.
+   */
+  load(): Promise<void> {
+    this.following ??= this.scope.subscribe(() => { this.derive() })
+    this.derive()
+    return Promise.resolve()
+  }
+
+  /**
+   * Persist this copy version, or advance only this process for a remote
+   * browser. Success is judged against the state the write left behind, so a
+   * refused or failed write reports false after its recovery read settles.
+   * @returns true when the selected persistence mode holds the acknowledgement.
+   */
+  async acknowledge(): Promise<boolean> {
+    if (this.scope.getSnapshot().mode === 'memory') {
+      this.localAcknowledged = true
+      this.derive()
+      return true
     }
-    this.store.update((state) => { state.status = 'loading'; state.error = null })
+    this.saving = true
+    this.store.update((state) => { state.status = 'saving'; state.error = null })
     try {
-      const response = await this.api.settings.describe({})
-      if (!response.result.ok) throw new Error(response.result.error.message)
-      const view = response.result.value.namespaces.find(
-        candidate => candidate.ns === WELCOME_NOTICE_SETTINGS_NAMESPACE,
-      )
-      if (view === undefined) throw new Error('welcome acknowledgement settings are unavailable')
-      if (generation !== this.generation) return
-      this.store.update((state) => {
-        state.status = 'ready'
-        state.acknowledged = acknowledgementOf(view) === WELCOME_NOTICE_VERSION
-        state.error = null
-      })
-    } catch (error) {
-      if (generation !== this.generation) return
+      await this.scope.set(WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_VERSION)
+    } finally {
+      this.saving = false
+    }
+    this.derive()
+    const { acknowledged } = this.store.getSnapshot()
+    if (!acknowledged) {
       this.store.update((state) => {
         state.status = 'error'
-        state.acknowledged = false
-        state.error = messageOf(error)
+        state.error = 'the acknowledgement did not persist'
       })
     }
+    return acknowledged
   }
 
-  /**
-   * Persist this copy version, or advance only this process for a remote browser.
-   * @returns true when the selected persistence mode accepted the acknowledgement.
-   */
-  async acknowledge(): Promise<boolean> {
-    const generation = ++this.generation
-    if (this.persistence === 'memory') {
+  /** Stop following the scope. */
+  dispose(): void {
+    this.following?.()
+    this.following = undefined
+  }
+
+  private derive(): void {
+    if (this.saving) return
+    const scope = this.scope.getSnapshot()
+    if (scope.mode === 'memory') {
       this.store.update((state) => {
         state.status = 'ready'
-        state.acknowledged = true
+        state.acknowledged = this.localAcknowledged
         state.error = null
       })
-      return true
+      return
     }
-    this.store.update((state) => { state.status = 'saving'; state.error = null })
-    try {
-      const response = await this.api.settings.mutate({
-        ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
-        ops: [{ op: 'set', path: [WELCOME_NOTICE_ACK_FIELD], value: WELCOME_NOTICE_VERSION }],
-      })
-      if (!response.result.ok) throw new Error(response.result.error.message)
-      if (generation === this.generation) {
-        this.store.update((state) => {
-          state.status = 'ready'
-          state.acknowledged = true
-          state.error = null
-        })
-      }
-      return true
-    } catch (error) {
-      if (generation === this.generation) {
+    switch (scope.status) {
+      case 'loading':
+        this.store.update((state) => { state.status = 'loading'; state.error = null })
+        return
+      case 'unavailable':
         this.store.update((state) => {
           state.status = 'error'
           state.acknowledged = false
-          state.error = messageOf(error)
+          state.error = 'welcome acknowledgement settings are unavailable'
         })
+        return
+      case 'ready': {
+        const acknowledged = scope.value?.[WELCOME_NOTICE_ACK_FIELD] === WELCOME_NOTICE_VERSION
+        this.store.update((state) => {
+          state.status = 'ready'
+          state.acknowledged = acknowledged
+          state.error = null
+        })
+        return
       }
-      return false
+      /* v8 ignore next -- every current settings scope status is handled above */
+      default: return assertNever(scope.status)
     }
   }
 }
-
-/**
- * Refresh only after welcome state has left idle. A memory-mode load retains
- * acknowledgement so reconnect does not reopen a process-local notice.
- * @param controller - welcome state owner whose current status decides whether to load.
- */
-export function refreshWelcomeIfLoaded(controller: WelcomeNoticeStore): void {
-  if (controller.store.getSnapshot().status === 'idle') return
-  void controller.load()
-}

packages/client/ui-settings-models/tests/apply.client.spec.ts

@@ -4,29 +4,37 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-import { TestRemote, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
-import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { apply, inject, refreshIfLoaded } from '@deepseek-ai/dsh-client-ui-settings-models/client'
+import {
+  WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_SETTINGS_NAMESPACE, WELCOME_NOTICE_VERSION,
+} from '../src/onboarding-copy.ts'
 import { ModelsSection } from '../src/client/ModelsSection.tsx'
 import { DeepSeekOnboardingDialog } from '../src/client/DeepSeekOnboardingDialog.tsx'
 import { WelcomeNotice } from '../src/client/WelcomeNotice.tsx'
 
-// 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')
+// These specs assert the shipped Chinese copy. The lane has no jsdom `window`,
+// so browser-language detection never runs and a fresh LocaleRuntime opens on
+// FALLBACK_LOCALE (en); bench stages zh explicitly on the locale instead.
 
-async function bench(isLoopback = true) {
+async function bench(isLoopback = true, settings?: object, services: object = {}) {
   const ctx = new Context()
   await ctx.plugin(SlotRegistry).await()
   const locale = new LocaleRuntime(ctx)
+  locale.setLocale('zh')
   ctx.provide('locale', locale)
   // The plugins inject `remote`; forwarded events reach them through the
   // same `$dispatch` handoff the connection sink makes.
   new TestRemote(ctx)
-  // The apply path only captures the wire face; no call leaves this fake
-  // until a section actually loads.
-  ctx.provide('connection', { api: {}, isLoopback } as never)
-  new SettingsSchemaService(ctx)
+  // Without a settings face the mirror's reads fail and stay contained; the
+  // Models join itself never fetches until a section actually loads. The real
+  // ui-settings apply also provides the settingsSchema service.
+  ctx.provide('connection', {
+    api: settings === undefined ? services : { ...services, settings },
+    isLoopback,
+  } as never)
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return { ctx, slots: ctx.get('slots') as SlotRegistry, locale }
 }
 
@@ -45,7 +53,7 @@ function declare(slots: SlotRegistry): () => void {
 
 describe('ui-settings-models apply', () => {
   it('declares the services it uses', () => {
-    expect(inject).toEqual(['slots', 'locale', 'connection', 'remote', 'settingsSchema'])
+    expect(inject).toEqual(['slots', 'locale', 'connection', 'remote', 'settingsScope', 'settingsSchema'])
   })
 
   it('registers the models nav entry for declarations before or after apply', async () => {
@@ -206,8 +214,31 @@ describe('pushed invalidations', () => {
     expect(load).toHaveBeenCalledTimes(1)
   })
 
-  it('routes only the onboarding namespace invalidation into welcome state', async () => {
-    const b = await bench()
+  it('welcome state follows the shared mirror across document commits', async () => {
+    // The welcome notice derives from its settings scope: a document commit
+    // reaches it through the mirror's one refresh, with no routing here.
+    const acknowledgement = { current: undefined as string | undefined }
+    const settings = {
+      describe: vi.fn(() => Promise.resolve({
+        rpcId: 'apply-welcome' as never,
+        result: {
+          ok: true as const,
+          value: {
+            writable: true,
+            hasDocument: false,
+            namespaces: [{
+              ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
+              schema: {},
+              value: acknowledgement.current === undefined ? {} : { [WELCOME_NOTICE_ACK_FIELD]: acknowledgement.current },
+              applies: 'live' as const,
+              secrets: [],
+              revision: 0,
+            }],
+          },
+        },
+      })),
+    }
+    const b = await bench(true, settings)
     declare(b.slots)
     await b.ctx.plugin({ inject: [...inject], apply }).await()
     const entry = b.slots.entries('settings.onboarding')
@@ -216,14 +247,59 @@ describe('pushed invalidations', () => {
       entry.inject as unknown as
       () => import('../src/client/WelcomeNotice.tsx').WelcomeNoticeInjected
     )()
-    injected.hooks.welcome.update((state) => { state.status = 'ready' })
-    const load = vi.spyOn(injected.controller, 'load').mockResolvedValue()
+    await injected.controller.load()
+    await vi.waitFor(() => {
+      expect(injected.hooks.welcome.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: false })
+    })
+    acknowledgement.current = WELCOME_NOTICE_VERSION
+    b.ctx.remote.$dispatch('settings/document-updated', ['ui-onboarding', 1])
+    await vi.waitFor(() => {
+      expect(injected.hooks.welcome.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: true })
+    })
+  })
 
-    b.ctx.remote.$dispatch('settings/document-updated', ['llm-deepseek', 1])
-    expect(load).not.toHaveBeenCalled()
-    b.ctx.remote.$dispatch('settings/document-updated', ['ui-onboarding', 2])
-    expect(load).toHaveBeenCalledOnce()
-    b.ctx.emit('connection/reset')
-    expect(load).toHaveBeenCalledTimes(2)
+  it('joins the refreshed mirror view on a settings invalidation', async () => {
+    let revision = 1
+    const describe = vi.fn(() => Promise.resolve({
+      rpcId: `apply-models-${revision}` as never,
+      result: {
+        ok: true as const,
+        value: {
+          writable: true,
+          hasDocument: false,
+          namespaces: [{
+            ns: 'llm-test',
+            schema: {},
+            value: {},
+            applies: 'live' as const,
+            secrets: [],
+            revision,
+          }],
+        },
+      },
+    }))
+    const providers = vi.fn(() => Promise.resolve({
+      rpcId: 'apply-models-providers' as never,
+      result: { ok: true as const, value: { providers: [] } },
+    }))
+    const b = await bench(true, { describe }, { llm: { providers } })
+    declare(b.slots)
+    await b.ctx.plugin({ inject: [...inject], apply }).await()
+    const entry = b.slots.entries('settings.section')
+      .find(candidate => candidate.options.id === 'models')!
+    const injected = (
+      entry.inject as unknown as
+      () => import('../src/client/ModelsSection.tsx').ModelsSectionInjected
+    )()
+    await injected.controller.load()
+    expect(injected.hooks.snapshot.getSnapshot().namespaces.get('llm-test')?.revision).toBe(1)
+
+    revision = 2
+    b.ctx.remote.$dispatch('settings/document-updated', ['llm-test', revision])
+
+    await vi.waitFor(() => {
+      expect(injected.hooks.snapshot.getSnapshot().namespaces.get('llm-test')?.revision).toBe(2)
+    })
+    expect(describe).toHaveBeenCalledTimes(2)
   })
 })

packages/client/ui-settings-models/tests/components.client.spec.tsx

@@ -14,6 +14,7 @@ import {
   DeepSeekModelsEditor, formatCapacity, modelDrafts, parseCapacity, validateDeepSeekModels,
 } from '../src/client/DeepSeekModelsEditor.tsx'
 import { apiKeyFailure } from '../src/client/apiKey.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { deriveKeyRef, ModelsSettingsStore } from '../src/client/store.ts'
 import type { ProviderRow } from '../src/client/store.ts'
 import { en } from '../src/client/locales.ts'
@@ -186,7 +187,8 @@ type WireFace = ConstructorParameters<typeof ModelsSettingsStore>[0]
 
 async function mountFace(scripted: ReturnType<typeof scriptedFace>) {
   const { face, update, replace, mutate, set, unset } = scripted
-  const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+  const mirror = new SettingsDescribeMirror(face as never)
+  const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, mirror)
   await controller.load()
   const injected: ModelsSectionProps = {
     controller,
@@ -196,7 +198,7 @@ async function mountFace(scripted: ReturnType<typeof scriptedFace>) {
     t,
   }
   const view = render(<ModelsSection {...injected} />)
-  return { view, face, update, replace, mutate, set, unset, controller }
+  return { view, face, update, replace, mutate, set, unset, controller, mirror }
 }
 
 async function mountSection(overrides: Parameters<typeof scriptedFace>[0] = {}) {
@@ -267,7 +269,7 @@ describe('ModelsSection', () => {
     face.credentials.describe.mockImplementation((payload: { refs: string[] }) => Promise.resolve(ok({
       credentials: Object.fromEntries(payload.refs.map(ref => [ref, { configured: false, writable: true }])),
     })))
-    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face as never))
     await controller.load()
     render(<ModelsSection
       controller={controller}
@@ -290,7 +292,7 @@ describe('ModelsSection', () => {
     face.credentials.describe.mockImplementation((payload: { refs: string[] }) => Promise.resolve(ok({
       credentials: Object.fromEntries(payload.refs.map(ref => [ref, { configured: true, writable: true }])),
     })))
-    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face as never))
     await controller.load()
     cleanup()
     render(<ModelsSection
@@ -351,7 +353,9 @@ describe('ModelsSection', () => {
     fireEvent.click(screen.getByText(en.apply))
     await waitFor(() => { expect(set).toHaveBeenCalledWith({ ref: 'DEEPSEEK_API_KEY', value: 'sk-live' }) })
     expect(update).not.toHaveBeenCalled()
-    await waitFor(() => { expect(face.settings.describe.mock.calls.length).toBeGreaterThan(1) })
+    // The saved key re-loads the join; the settings answer rides the shared
+    // mirror, so the reload shows as a directory read rather than a describe.
+    await waitFor(() => { expect(face.llm.providers.mock.calls.length).toBeGreaterThan(1) })
     expect((await screen.findByRole('status')).textContent).toBe(
       providerCopy(en.savedProvider, { provider: 'deepseek-official', displayName: 'DeepSeek' }),
     )
@@ -959,7 +963,7 @@ describe('ModelsSection', () => {
     const set = vi.fn()
       .mockResolvedValueOnce(fail('credential store unavailable', 'credential-rejected'))
       .mockResolvedValueOnce(ok({}))
-    const { face, controller } = await mountSection({ mutate, set })
+    const { face, controller, mirror } = await mountSection({ mutate, set })
     fireEvent.click(screen.getByText(en.add))
     await screen.findByLabelText(en.provider)
     fireEvent.change(screen.getByLabelText<HTMLInputElement>(en.keyInput), { target: { value: 'sk-ant' } })
@@ -971,7 +975,12 @@ describe('ModelsSection', () => {
       hasDocument: false,
       namespaces: wireNamespaces().map(namespace => namespace.ns === 'llm-pi-ai' ? afterSettings : namespace),
     }))
-    await act(async () => { await controller.load() })
+    // The refreshed settings answer reaches the page through the mirror's own
+    // refresh (the document commit's invalidation in production).
+    await act(async () => {
+      await mirror.load()
+      await controller.load()
+    })
     expect(controller.store.getSnapshot().namespaces.get('llm-pi-ai')?.revision).toBe(1)
     fireEvent.click(screen.getByText(en.apply))
     await waitFor(() => { expect(set).toHaveBeenCalledTimes(2) })
@@ -1014,7 +1023,7 @@ describe('ModelsSection', () => {
     const unhandled = vi.fn()
     process.on('unhandledRejection', unhandled)
     try {
-      const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+      const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face as never))
       await controller.load()
       render(<ModelsSection
         controller={controller}
@@ -1152,7 +1161,8 @@ describe('ModelsSection', () => {
   it('renders the load failure with a retry control', async () => {
     const face = scriptedFace()
     face.face.llm.providers = vi.fn(() => Promise.resolve(fail('directory down', 'internal'))) as never
-    const controller = new ModelsSettingsStore(face.face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(
+      face.face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face.face as never))
     await controller.load()
     render(<ModelsSection
       controller={controller}
@@ -1173,7 +1183,7 @@ describe('ModelsSection', () => {
       hasDocument: false,
       namespaces: wireNamespaces(),
     })))
-    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face as never))
     await controller.load()
     cleanup()
     render(<ModelsSection
@@ -1236,7 +1246,7 @@ describe('ModelsSection', () => {
 
   it('loads on first render of an idle controller', async () => {
     const { face } = scriptedFace()
-    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(face as never))
     render(<ModelsSection
       controller={controller}
       useSnapshot={bindSnapshotSelector(controller.store)}

packages/client/ui-settings-models/tests/onboarding-dialog.client.spec.tsx

@@ -7,6 +7,7 @@ import type { RpcResponse, SettingsNamespaceView } from '@deepseek-ai/dsh-api-re
 import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
 import { DeepSeekOnboardingDialog } from '../src/client/DeepSeekOnboardingDialog.tsx'
 import type { DeepSeekOnboardingDialogProps } from '../src/client/DeepSeekOnboardingDialog.tsx'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { ModelsSettingsStore } from '../src/client/store.ts'
 import { en } from '../src/client/locales.ts'
 import { settingsSchema } from './settings-schema.client.ts'
@@ -125,7 +126,7 @@ function harness(options: {
       set,
     },
   }
-  const controller = new ModelsSettingsStore(face as never, settingsSchema)
+  const controller = new ModelsSettingsStore(face as never, settingsSchema, new SettingsDescribeMirror(face as never))
   const openSection = vi.fn()
   const complete = vi.fn()
   const unusedHook = (() => { throw new Error('unused standard hook') }) as never

packages/client/ui-settings-models/tests/provider-form.client.spec.tsx

@@ -9,6 +9,7 @@ import { ModelsSection, providerCopy } from '../src/client/ModelsSection.tsx'
 import type { ModelsSectionInjected, ModelsSectionProps } from '../src/client/ModelsSection.tsx'
 import { CustomProviderCard } from '../src/client/CustomProviderCard.tsx'
 import { formatCapacity, parseCapacity } from '../src/client/DeepSeekModelsEditor.tsx'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { ModelsSettingsStore, deriveKeyRef, protocolChoices } from '../src/client/store.ts'
 import { en } from '../src/client/locales.ts'
 import { settingsSchema } from './settings-schema.client.ts'
@@ -140,7 +141,8 @@ function firstMutate(mutate: ReturnType<typeof vi.fn>): MutateCall {
 
 async function mountSection(options: Parameters<typeof scriptedFace>[0] = {}) {
   const scripted = scriptedFace(options)
-  const controller = new ModelsSettingsStore(scripted.face as unknown as WireFace, settingsSchema)
+  const controller = new ModelsSettingsStore(
+    scripted.face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(scripted.face as never))
   await controller.load()
   const injected: ModelsSectionProps = {
     controller,
@@ -660,7 +662,8 @@ describe('provider rows', () => {
         active: true,
       }],
     }))) as never
-    const controller = new ModelsSettingsStore(scripted.face as unknown as WireFace, settingsSchema)
+    const controller = new ModelsSettingsStore(
+      scripted.face as unknown as WireFace, settingsSchema, new SettingsDescribeMirror(scripted.face as never))
     await controller.load()
     render(<ModelsSection
       controller={controller}

packages/client/ui-settings-models/tests/store.client.spec.ts

@@ -1,8 +1,9 @@
 /** Page-store join: directory × namespaces × credentials, with last-good rows on failure. */
 import { describe, expect, it } from 'vitest'
 import type { RpcResponse } from '@deepseek-ai/dsh-api-remotes/client'
-import { messageOf, ModelsSettingsStore } from '../src/client/store.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { settingsSchema } from './settings-schema.client.ts'
+import { messageOf, ModelsSettingsStore } from '../src/client/store.ts'
 
 let nextRpc = 0
 function ok<T>(value: T): RpcResponse<T> {
@@ -67,13 +68,14 @@ function api(overrides: {
       unset: () => Promise.resolve(ok({})),
     },
   }
-  return { face: face as never, seenRefs }
+  const wire = face as never
+  return { face: wire, mirror: new SettingsDescribeMirror(wire), seenRefs }
 }
 
 describe('ModelsSettingsStore', () => {
   it('joins rows with configured, removable, and credential state', async () => {
-    const { face, seenRefs } = api()
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const { face, mirror, seenRefs } = api()
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     const state = store.store.getSnapshot()
     expect(state.status).toBe('ready')
@@ -100,8 +102,8 @@ describe('ModelsSettingsStore', () => {
   })
 
   it('degrades the credential badge, not the page, when the credential domain fails', async () => {
-    const { face } = api({ describeCredentials: () => Promise.resolve(fail('no provider')) })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const { face, mirror } = api({ describeCredentials: () => Promise.resolve(fail('no provider')) })
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     const state = store.store.getSnapshot()
     expect(state.status).toBe('ready')
@@ -110,10 +112,10 @@ describe('ModelsSettingsStore', () => {
   })
 
   it('settles a credential transport rejection without leaving the store loading', async () => {
-    const { face } = api({
+    const { face, mirror } = api({
       describeCredentials: () => Promise.reject(new Error('credential transport down')),
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await expect(store.load()).resolves.toBeUndefined()
     expect(store.store.getSnapshot()).toMatchObject({
       status: 'ready',
@@ -122,22 +124,21 @@ describe('ModelsSettingsStore', () => {
   })
 
   it('stringifies a non-Error credential transport rejection', async () => {
-    const { face } = api({
-      // oxlint-disable-next-line typescript/prefer-promise-reject-errors -- the non-Error rejection is the scenario
-      describeCredentials: () => Promise.reject('credential transport refusal'),
+    const { face, mirror } = api({
+      describeCredentials: async () => { throw 'credential transport refusal' },
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await expect(store.load()).resolves.toBeUndefined()
     expect(store.store.getSnapshot().credentialError).toBe('credential transport refusal')
   })
 
   it('surfaces a directory failure and keeps the last good rows', async () => {
-    const { face } = api()
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const { face, mirror } = api()
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     expect(store.store.getSnapshot().rows).toHaveLength(4)
     const broken = api({ providers: () => Promise.resolve(fail('directory down')) })
-    const failing = new ModelsSettingsStore(broken.face, settingsSchema)
+    const failing = new ModelsSettingsStore(broken.face, settingsSchema, broken.mirror)
     await failing.load()
     expect(failing.store.getSnapshot()).toMatchObject({ status: 'error', error: 'directory down' })
     // The first store's snapshot is untouched by the second's failure.
@@ -148,7 +149,7 @@ describe('ModelsSettingsStore', () => {
     let release: (() => void) | undefined
     const gate = new Promise<void>((resolve) => { release = resolve })
     let call = 0
-    const { face } = api({
+    const { face, mirror } = api({
       providers: async () => {
         call += 1
         if (call === 1) {
@@ -158,7 +159,7 @@ describe('ModelsSettingsStore', () => {
         return ok({ providers: DIRECTORY })
       },
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     const first = store.load()
     const second = store.load()
     release?.()
@@ -169,7 +170,7 @@ describe('ModelsSettingsStore', () => {
 
 describe('edge joins', () => {
   it('treats a non-object profile as having no credential reference', async () => {
-    const { face } = api({
+    const { face, mirror } = api({
       describeSettings: () => Promise.resolve(ok({
         writable: true,
         hasDocument: false,
@@ -188,7 +189,7 @@ describe('edge joins', () => {
         ] as never,
       })),
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     const state = store.store.getSnapshot()
     expect(state.rows[0]).toMatchObject({ configured: true, removable: false })
@@ -196,7 +197,7 @@ describe('edge joins', () => {
   })
 
   it('skips the credential describe entirely when no row names a reference', async () => {
-    const { face, seenRefs } = api({
+    const { face, mirror, seenRefs } = api({
       describeSettings: () => Promise.resolve(ok({
         writable: true,
         hasDocument: false,
@@ -208,24 +209,56 @@ describe('edge joins', () => {
         ] as never,
       })),
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     expect(seenRefs).toEqual([])
     expect(store.store.getSnapshot().status).toBe('ready')
   })
 
   it('surfaces a settings describe failure', async () => {
-    const { face } = api({ describeSettings: () => Promise.resolve(fail('settings down')) })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const { face, mirror } = api({ describeSettings: () => Promise.resolve(fail('settings down')) })
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     expect(store.store.getSnapshot()).toMatchObject({ status: 'error', error: 'settings down' })
   })
 
+  it('reports a terminally unavailable settings mirror precisely', async () => {
+    const { face } = api()
+    const store = new ModelsSettingsStore(
+      face,
+      settingsSchema,
+      new SettingsDescribeMirror(face, 'memory'),
+    )
+    await store.load()
+    expect(store.store.getSnapshot()).toMatchObject({
+      status: 'error',
+      error: 'settings are unavailable in this browser',
+    })
+  })
+
+  it('reuses a held settings view after its refresh fails', async () => {
+    let settingsCall = 0
+    const { face, mirror } = api({
+      describeSettings: () => {
+        settingsCall += 1
+        return Promise.resolve(settingsCall === 1
+          ? ok({ writable: true, hasDocument: false, namespaces: NAMESPACES })
+          : fail('settings refresh down'))
+      },
+    })
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
+    await store.load()
+    await mirror.load()
+    expect(mirror.getSnapshot().error).toBe('settings refresh down')
+    await store.load()
+    expect(store.store.getSnapshot()).toMatchObject({ status: 'ready', error: null })
+    expect(store.store.getSnapshot().rows).toHaveLength(4)
+  })
+
   it('stringifies a non-Error load failure', async () => {
     // The wire can surface non-Error throwables; the store must stringify them.
-    // oxlint-disable-next-line typescript/prefer-promise-reject-errors -- the non-Error rejection is the scenario
-    const { face } = api({ providers: () => Promise.reject('plain refusal') })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const { face, mirror } = api({ providers: async () => { throw 'plain refusal' } })
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     await store.load()
     expect(store.store.getSnapshot()).toMatchObject({ status: 'error', error: 'plain refusal' })
   })
@@ -234,7 +267,7 @@ describe('edge joins', () => {
     let release: (() => void) | undefined
     const gate = new Promise<void>((resolve) => { release = resolve })
     let call = 0
-    const { face } = api({
+    const { face, mirror } = api({
       providers: async () => {
         call += 1
         if (call === 1) {
@@ -244,7 +277,7 @@ describe('edge joins', () => {
         return ok({ providers: DIRECTORY })
       },
     })
-    const store = new ModelsSettingsStore(face, settingsSchema)
+    const store = new ModelsSettingsStore(face, settingsSchema, mirror)
     const first = store.load()
     const second = store.load()
     await second

packages/client/ui-settings-models/tests/welcome-notice.client.spec.tsx

@@ -2,9 +2,17 @@
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
+import { Context } from '@deepseek-ai/cordis'
+import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
+import { SettingsScopeController } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-scope.ts'
+
+/** Stateless schema service for scope construction in this jsdom fixture. */
+const schemaService = new SettingsSchemaService(new Context())
 import { WelcomeNotice } from '../src/client/WelcomeNotice.tsx'
 import type { WelcomeNoticeProps } from '../src/client/WelcomeNotice.tsx'
-import { WelcomeNoticeStore } from '../src/client/welcome-store.ts'
+import { decodeWelcomeSection, WelcomeNoticeStore } from '../src/client/welcome-store.ts'
+import type { WelcomeSection } from '../src/client/welcome-store.ts'
 import { en, zh } from '../src/client/locales.ts'
 import {
   WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_COPY, WELCOME_NOTICE_SETTINGS_NAMESPACE,
@@ -20,7 +28,24 @@ function response<T>(value: T) {
   return { rpcId: 'welcome-rpc' as never, result: { ok: true as const, value } }
 }
 
-function mount(version?: string, mutateImpl: () => Promise<unknown> = () => Promise.resolve(response({}))) {
+function welcomeView(value: unknown, revision = 0) {
+  return {
+    ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
+    schema: {},
+    value,
+    base: {},
+    user: {},
+    applies: 'live' as const,
+    secrets: [],
+    revision,
+  }
+}
+
+function mount(
+  version?: string,
+  mutateImpl: () => Promise<unknown> = () =>
+    Promise.resolve(response(welcomeView({ [WELCOME_NOTICE_ACK_FIELD]: WELCOME_NOTICE_VERSION }, 1))),
+) {
   const appRoot = document.createElement('div')
   appRoot.id = 'root'
   document.body.append(appRoot)
@@ -30,21 +55,21 @@ function mount(version?: string, mutateImpl: () => Promise<unknown> = () => Prom
       describe: () => Promise.resolve(response({
         writable: true,
         hasDocument: false,
-        namespaces: [{
-          ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
-          schema: {},
-          value: version === undefined ? {} : { [WELCOME_NOTICE_ACK_FIELD]: version },
-          base: {},
-          user: {},
-          applies: 'live' as const,
-          secrets: [],
-          revision: 0,
-        }],
+        namespaces: [welcomeView(version === undefined ? {} : { [WELCOME_NOTICE_ACK_FIELD]: version })],
       })),
       mutate,
     },
   }
-  const controller = new WelcomeNoticeStore(api as never)
+  const mirror = new SettingsDescribeMirror(api as never)
+  const scope = new SettingsScopeController<WelcomeSection>(
+    api as never,
+    { namespace: WELCOME_NOTICE_SETTINGS_NAMESPACE, decode: decodeWelcomeSection },
+    mirror,
+    'host',
+    schemaService,
+  )
+  const controller = new WelcomeNoticeStore(scope)
+  void mirror.load()
   const complete = vi.fn()
   const unusedHook = (() => { throw new Error('unused standard hook') }) as never
   const props: WelcomeNoticeProps = {
@@ -57,7 +82,7 @@ function mount(version?: string, mutateImpl: () => Promise<unknown> = () => Prom
     useWelcome: bindSnapshotSelector(controller.store),
     t: key => zh[key],
   }
-  return { ...render(<WelcomeNotice {...props} />), complete, controller, mutate, appRoot }
+  return { ...render(<WelcomeNotice {...props} />), complete, controller, mirror, mutate, appRoot }
 }
 
 describe('WelcomeNotice', () => {
@@ -100,7 +125,10 @@ describe('WelcomeNotice', () => {
 
   it('skips itself when this exact version was already acknowledged', async () => {
     const h = mount(WELCOME_NOTICE_VERSION)
-    await act(async () => { await h.controller.load() })
+    await act(async () => {
+      await h.mirror.load()
+      await h.controller.load()
+    })
     expect(screen.queryByRole('dialog')).toBeNull()
     expect(h.complete).toHaveBeenCalledOnce()
   })

packages/client/ui-settings-models/tests/welcome-store.client.spec.ts

@@ -1,40 +1,58 @@
 import { describe, expect, it, vi } from 'vitest'
 import type { RpcResponse } from '@deepseek-ai/dsh-api-remotes/client'
-import { refreshWelcomeIfLoaded, WelcomeNoticeStore } from '../src/client/welcome-store.ts'
+import { Context } from '@deepseek-ai/cordis'
+import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
+import { SettingsDescribeMirror } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
+import { SettingsScopeController } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-scope.ts'
+import { decodeWelcomeSection, WelcomeNoticeStore } from '../src/client/welcome-store.ts'
 import {
   WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_SETTINGS_NAMESPACE, WELCOME_NOTICE_VERSION,
 } from '../src/onboarding-copy.ts'
 
+const schemaService = new SettingsSchemaService(new Context())
+
 let rpc = 0
 function ok<T>(value: T): RpcResponse<T> {
   return { rpcId: `welcome-${rpc++}` as never, result: { ok: true, value } }
 }
 
-function namespace(version?: string) {
+function namespace(value: unknown = {}, revision = 0) {
   return {
     ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
     schema: {},
-    value: version === undefined ? {} : { [WELCOME_NOTICE_ACK_FIELD]: version },
-    base: {},
-    user: {},
+    value,
     applies: 'live' as const,
     secrets: [],
-    revision: 0,
+    revision,
   }
 }
 
-function deferred<T>() {
-  let resolve!: (value: T) => void
-  let reject!: (reason: unknown) => void
-  const promise = new Promise<T>((res, rej) => { resolve = res; reject = rej })
-  return { promise, resolve, reject }
+function acknowledgedNamespace(version: string, revision = 1) {
+  return namespace({ [WELCOME_NOTICE_ACK_FIELD]: version }, revision)
+}
+
+/** The welcome store over a real mirror-derived scope and a fake wire. */
+function buildWelcome(
+  api: { describe?: ReturnType<typeof vi.fn>; mutate?: ReturnType<typeof vi.fn> },
+  persistence: 'host' | 'memory' = 'host',
+) {
+  const wire = { settings: api } as never
+  const mirror = new SettingsDescribeMirror(wire, persistence)
+  const scope = new SettingsScopeController(
+    wire,
+    { namespace: WELCOME_NOTICE_SETTINGS_NAMESPACE, decode: decodeWelcomeSection },
+    mirror,
+    persistence,
+    schemaService,
+  )
+  return { mirror, controller: new WelcomeNoticeStore(scope) }
 }
 
 describe('WelcomeNoticeStore', () => {
   it('acknowledges in memory without calling loopback-only settings APIs', async () => {
-    const describe = vi.fn()
+    const describeCall = vi.fn()
     const mutate = vi.fn()
-    const controller = new WelcomeNoticeStore({ settings: { describe, mutate } } as never, 'memory')
+    const { controller } = buildWelcome({ describe: describeCall, mutate }, 'memory')
 
     await controller.load()
     expect(controller.store.getSnapshot()).toEqual({ status: 'ready', acknowledged: false, error: null })
@@ -42,7 +60,7 @@ describe('WelcomeNoticeStore', () => {
     expect(controller.store.getSnapshot()).toEqual({ status: 'ready', acknowledged: true, error: null })
     await controller.load()
     expect(controller.store.getSnapshot()).toEqual({ status: 'ready', acknowledged: true, error: null })
-    expect(describe).not.toHaveBeenCalled()
+    expect(describeCall).not.toHaveBeenCalled()
     expect(mutate).not.toHaveBeenCalled()
   })
 
@@ -52,148 +70,101 @@ describe('WelcomeNoticeStore', () => {
       ['older-copy', false],
       [WELCOME_NOTICE_VERSION, true],
     ] as const) {
-      const api = {
-        settings: {
-          describe: vi.fn(() => Promise.resolve(ok({
-            writable: true, hasDocument: false, namespaces: [namespace(version)],
-          }))),
-        },
-      }
-      const controller = new WelcomeNoticeStore(api as never)
+      const describeCall = vi.fn(() => Promise.resolve(ok({
+        writable: true,
+        hasDocument: false,
+        namespaces: [version === undefined ? namespace() : acknowledgedNamespace(version)],
+      })))
+      const { mirror, controller } = buildWelcome({ describe: describeCall })
+      await mirror.load()
       await controller.load()
       expect(controller.store.getSnapshot()).toMatchObject({ status: 'ready', acknowledged })
     }
   })
 
-  it('persists the owner version through one idempotent path mutation', async () => {
-    const mutate = vi.fn(() => Promise.resolve(ok(namespace(WELCOME_NOTICE_VERSION))))
-    const controller = new WelcomeNoticeStore({ settings: { mutate } } as never)
+  it('persists the owner version through one revision-fenced mutation', async () => {
+    const describeCall = vi.fn(() => Promise.resolve(ok({
+      writable: true, hasDocument: false, namespaces: [namespace({}, 3)],
+    })))
+    const mutate = vi.fn(() => Promise.resolve(ok(acknowledgedNamespace(WELCOME_NOTICE_VERSION, 4))))
+    const { mirror, controller } = buildWelcome({ describe: describeCall, mutate })
+    await mirror.load()
+    await controller.load()
     await expect(controller.acknowledge()).resolves.toBe(true)
     expect(mutate).toHaveBeenCalledWith({
       ns: WELCOME_NOTICE_SETTINGS_NAMESPACE,
       ops: [{ op: 'set', path: [WELCOME_NOTICE_ACK_FIELD], value: WELCOME_NOTICE_VERSION }],
+      expectedRevision: 3,
     })
     expect(controller.store.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: true })
+    // The write answer folded into the mirror; no re-read followed.
+    expect(describeCall).toHaveBeenCalledTimes(1)
   })
 
-  it('keeps the notice pending when loading or persistence fails', async () => {
-    const load = new WelcomeNoticeStore({
-      settings: { describe: () => Promise.reject(new Error('offline')) },
-    } as never)
-    await load.load()
-    expect(load.store.getSnapshot()).toEqual({ status: 'error', acknowledged: false, error: 'offline' })
-
-    const save = new WelcomeNoticeStore({
-      settings: { mutate: () => Promise.reject(new Error('disk full')) },
-    } as never)
-    await expect(save.acknowledge()).resolves.toBe(false)
-    expect(save.store.getSnapshot()).toEqual({ status: 'error', acknowledged: false, error: 'disk full' })
+  it('keeps the notice pending while the settings read has not answered', async () => {
+    const describeCall = vi.fn(() => Promise.reject(new Error('offline')))
+    const { mirror, controller } = buildWelcome({ describe: describeCall })
+    await mirror.load()
+    await controller.load()
+    // No answer stands, so the step renders nothing and never acknowledges.
+    expect(controller.store.getSnapshot()).toEqual({ status: 'loading', acknowledged: false, error: null })
+  })
 
-    const nonError = new WelcomeNoticeStore({
-      // Durable/wire failures are unknown; exercise containment of a non-Error rejection.
-      settings: { describe: () => Promise.reject(new Error('offline string')) },
-    } as never)
-    await nonError.load()
-    expect(nonError.store.getSnapshot().error).toBe('offline string')
+  it('reports a failed or refused persistence attempt after its recovery read', async () => {
+    const describeCall = vi.fn(() => Promise.resolve(ok({
+      writable: true, hasDocument: false, namespaces: [namespace()],
+    })))
+    const mutate = vi.fn(() => Promise.reject(new Error('disk full')))
+    const { mirror, controller } = buildWelcome({ describe: describeCall, mutate })
+    await mirror.load()
+    await controller.load()
+    await expect(controller.acknowledge()).resolves.toBe(false)
+    expect(controller.store.getSnapshot()).toMatchObject({
+      status: 'error',
+      acknowledged: false,
+      error: 'the acknowledgement did not persist',
+    })
+    // The failed latest write triggered one mirror recovery read.
+    expect(describeCall).toHaveBeenCalledTimes(2)
   })
 
-  it('reports business failures, missing namespaces, and malformed durable values', async () => {
-    for (const describe of [
-      () => Promise.resolve({
-        rpcId: 'failed' as never,
-        result: { ok: false as const, error: { code: 'internal' as const, message: 'denied', details: {} } },
-      }),
-      () => Promise.resolve(ok({ writable: true, hasDocument: false, namespaces: [] })),
-    ]) {
-      const controller = new WelcomeNoticeStore({ settings: { describe } } as never)
-      await controller.load()
-      expect(controller.store.getSnapshot().status).toBe('error')
-    }
+  it('reports a missing namespace as an error instead of a silent skip', async () => {
+    const describeCall = vi.fn(() => Promise.resolve(ok({
+      writable: true, hasDocument: false, namespaces: [],
+    })))
+    const { mirror, controller } = buildWelcome({ describe: describeCall })
+    await mirror.load()
+    await controller.load()
+    expect(controller.store.getSnapshot()).toMatchObject({
+      status: 'error',
+      error: 'welcome acknowledgement settings are unavailable',
+    })
+  })
 
+  it('reads malformed durable values as unacknowledged', async () => {
     for (const value of [null, 42, { [WELCOME_NOTICE_ACK_FIELD]: 42 }]) {
-      const controller = new WelcomeNoticeStore({
-        settings: { describe: () => Promise.resolve(ok({
-          writable: true,
-          hasDocument: false,
-          namespaces: [{ ...namespace(), value }],
-        })) },
-      } as never)
+      const describeCall = vi.fn(() => Promise.resolve(ok({
+        writable: true, hasDocument: false, namespaces: [namespace(value)],
+      })))
+      const { mirror, controller } = buildWelcome({ describe: describeCall })
+      await mirror.load()
       await controller.load()
       expect(controller.store.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: false })
     }
-
-    const save = new WelcomeNoticeStore({
-      settings: { mutate: () => Promise.resolve({
-        rpcId: 'failed-save' as never,
-        result: {
-          ok: false,
-          error: {
-            code: 'settings-rejected',
-            message: 'denied',
-            details: { ns: WELCOME_NOTICE_SETTINGS_NAMESPACE },
-          },
-        },
-      }) },
-    } as never)
-    await expect(save.acknowledge()).resolves.toBe(false)
-    expect(save.store.getSnapshot().error).toBe('denied')
-  })
-
-  it('lets the latest load win over stale success and failure', async () => {
-    const first = deferred<ReturnType<typeof ok>>()
-    const describe = vi.fn()
-      .mockImplementationOnce(() => first.promise)
-      .mockImplementationOnce(() => Promise.resolve(ok({
-        writable: true, hasDocument: false, namespaces: [namespace()],
-      })))
-    const controller = new WelcomeNoticeStore({ settings: { describe } } as never)
-    const stale = controller.load()
-    await controller.load()
-    first.resolve(ok({
-      writable: true, hasDocument: false, namespaces: [namespace(WELCOME_NOTICE_VERSION)],
-    }))
-    await stale
-    expect(controller.store.getSnapshot().acknowledged).toBe(false)
-
-    const failed = deferred<ReturnType<typeof ok>>()
-    describe
-      .mockImplementationOnce(() => failed.promise)
-      .mockImplementationOnce(() => Promise.resolve(ok({
-        writable: true, hasDocument: false, namespaces: [namespace(WELCOME_NOTICE_VERSION)],
-      })))
-    const staleFailure = controller.load()
-    await controller.load()
-    failed.reject('stale failure')
-    await staleFailure
-    expect(controller.store.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: true, error: null })
   })
 
-  it('contains stale acknowledgement settlements and refreshes only a loaded store', async () => {
-    const write = deferred<ReturnType<typeof ok>>()
-    const describe = vi.fn(() => Promise.resolve(ok({
-      writable: true, hasDocument: false, namespaces: [namespace()],
-    })))
-    const controller = new WelcomeNoticeStore({
-      settings: { mutate: () => write.promise, describe },
-    } as never)
-    refreshWelcomeIfLoaded(controller)
-    expect(describe).not.toHaveBeenCalled()
-    const staleWrite = controller.acknowledge()
+  it('follows a later document change without an own read', async () => {
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(ok({ writable: true, hasDocument: false, namespaces: [namespace()] }))
+      .mockResolvedValueOnce(ok({
+        writable: true, hasDocument: false,
+        namespaces: [acknowledgedNamespace(WELCOME_NOTICE_VERSION)],
+      }))
+    const { mirror, controller } = buildWelcome({ describe: describeCall })
+    await mirror.load()
     await controller.load()
-    write.resolve(ok(namespace(WELCOME_NOTICE_VERSION)))
-    await expect(staleWrite).resolves.toBe(true)
-    expect(controller.store.getSnapshot().acknowledged).toBe(false)
-    refreshWelcomeIfLoaded(controller)
-    await vi.waitFor(() => { expect(describe).toHaveBeenCalledTimes(2) })
-
-    const failedWrite = deferred<ReturnType<typeof ok>>()
-    const staleFailure = new WelcomeNoticeStore({
-      settings: { mutate: () => failedWrite.promise, describe },
-    } as never)
-    const pending = staleFailure.acknowledge()
-    await staleFailure.load()
-    failedWrite.reject('late failure')
-    await expect(pending).resolves.toBe(false)
-    expect(staleFailure.store.getSnapshot().status).toBe('ready')
+    expect(controller.store.getSnapshot()).toMatchObject({ acknowledged: false })
+    await mirror.load()
+    expect(controller.store.getSnapshot()).toMatchObject({ status: 'ready', acknowledged: true })
   })
 })

packages/client/ui-settings-plugins/src/client/index.ts

@@ -72,26 +72,17 @@ export function apply(ctx: ClientContext): void {
     'ui-settings-plugins: credential invalidations',
   )
 
-  // Which namespaces the Host serves is a registration fact the wire does not
-  // announce, so the directory re-reads on the two signals that can carry a
-  // changed composition: a settings document commit and a reconnect.
+  // Which namespaces the Host serves comes from the shared describe mirror,
+  // whose owning plugin already refreshes it on document commits and
+  // reconnects — the tab only derives.
   const configurable = new ConfigurablePluginsTabController(
-    api, () => ctx.slots.entries('settings.plugin.item'))
+    ctx.settingsScope.describe(), () => ctx.slots.entries('settings.plugin.item'))
   ctx.effect(() => () => { configurable.dispose() }, 'ui-settings-plugins: tab directory')
-  ctx.effect(
-    () => ctx.remote.$on('settings/document-updated', () => { void configurable.load() }),
-    'ui-settings-plugins: served-namespace invalidations',
-  )
-  ctx.effect(
-    () => ctx.on('connection/reset', () => { void configurable.load() }),
-    'ui-settings-plugins: served-namespace reconnect',
-  )
   // A card registered after the first read joins the list without a wire call.
   ctx.effect(
     () => ctx.slots.subscribe('settings.plugin.item', () => { configurable.refresh() }),
     'ui-settings-plugins: card ledger',
   )
-  void configurable.load()
 
   let tabsVersion = -1
   let tabsRevision = -1

packages/client/ui-settings-plugins/src/client/tab-store.ts

@@ -10,7 +10,7 @@
  * trace and does not count toward the empty line.
  */
 
-import type { IApiClient } from '@deepseek-ai/dsh-client-connection/client'
+import type { SettingsDescribeFace } from '@deepseek-ai/dsh-client-ui-settings/client'
 import type { StoredEntry } from '@deepseek-ai/dsh-client-ui-slots'
 import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 
@@ -42,47 +42,23 @@ export interface ConfigurablePluginsTabFace {
   }
 }
 
-/** Reads the served namespaces and pairs them with the cards that claim them. */
+/** Derives the served namespaces from the shared describe mirror and pairs them with the cards that claim them. */
 export class ConfigurablePluginsTabController {
   private readonly store = createSnapshotStore<ConfigurablePluginsTabState>({ loaded: false, namespaces: [] })
-  /** Last Host answer; kept so a slot mutation republishes without a wire read. */
-  private served: readonly string[] = []
-  private loaded = false
-  private generation = 0
   private disposed = false
+  private readonly unsubscribe: () => void
 
   /**
-   * @param api - settings wire face.
+   * @param describeFace - the shared mirror's describe face; its refreshes
+   * (document commits, reconnects) are what keep the served set current.
    * @param entries - reads the cards currently registered into the section's slot.
    */
   constructor(
-    private readonly api: Pick<IApiClient, 'settings'>,
+    private readonly describeFace: SettingsDescribeFace,
     private readonly entries: () => readonly StoredEntry[],
-  ) {}
-
-  /** Opaque read of {@link disposed}: control flow cannot narrow it across awaits. */
-  private isDisposed(): boolean {
-    return this.disposed
-  }
-
-  /**
-   * Re-read the served namespaces from the Host and republish.
-   * @returns settlement after the read, or immediately once disposed.
-   */
-  async load(): Promise<void> {
-    if (this.isDisposed()) return
-    const generation = ++this.generation
-    let response: Awaited<ReturnType<IApiClient['settings']['describe']>>
-    try {
-      response = await this.api.settings.describe({})
-    } catch (_settingsReadFailure) {
-      // The tab keeps the namespaces it last knew; the next invalidation
-      // or reconnect reads again.
-      return
-    }
-    if (this.isDisposed() || generation !== this.generation || !response.result.ok) return
-    this.served = response.result.value.namespaces.map(view => view.ns)
-    this.loaded = true
+  ) {
+    this.unsubscribe = describeFace.subscribe(() => { this.publish() })
+    void describeFace.ensure()
     this.publish()
   }
 
@@ -92,10 +68,10 @@ export class ConfigurablePluginsTabController {
     this.publish()
   }
 
-  /** Stop publishing; an in-flight read settles without touching the store. */
+  /** Stop publishing and stop following the mirror. */
   dispose(): void {
     this.disposed = true
-    this.generation += 1
+    this.unsubscribe()
   }
 
   /**
@@ -107,17 +83,20 @@ export class ConfigurablePluginsTabController {
   }
 
   private publish(): void {
-    const served = new Set(this.served)
+    if (this.disposed) return
+    const mirrored = this.describeFace.getSnapshot()
+    const loaded = mirrored.view !== undefined
+    const served = new Set(mirrored.view?.namespaces.map(view => view.ns) ?? [])
     const namespaces = this.entries().flatMap(entry =>
       entry.options.key !== undefined && served.has(entry.options.key) ? [entry.options.key] : [])
     const previous = this.store.getSnapshot()
-    // Every settings-document commit re-reads, and most of them change nothing
-    // this section shows. An observable source must keep its snapshot
-    // reference until the fact moves, or each unrelated save re-renders the
-    // whole card list (packages/client/AGENTS.md reactive rule 5).
-    if (previous.loaded === this.loaded
+    // Every settings-document commit refreshes the mirror, and most commits
+    // change nothing this section shows. An observable source must keep its
+    // snapshot reference until the fact moves, or each unrelated save
+    // re-renders the whole card list (packages/client/AGENTS.md reactive rule 5).
+    if (previous.loaded === loaded
       && previous.namespaces.length === namespaces.length
       && previous.namespaces.every((ns, index) => ns === namespaces[index])) return
-    this.store.set({ loaded: this.loaded, namespaces })
+    this.store.set({ loaded, namespaces })
   }
 }

packages/client/ui-settings-plugins/tests/apply.client.spec.ts

@@ -5,17 +5,16 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
-import { TestRemote, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
-import { SettingsSchemaService } from '@deepseek-ai/dsh-client-ui-settings/src/client/schema.ts'
-import { SettingsScopeBinder } from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-scope.ts'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as settingsApply, inject as settingsInject } from '@deepseek-ai/dsh-client-ui-settings/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-settings-plugins/client'
 import type {
   ConfigurablePluginsTabFace, PluginsSettingsSectionInjected,
 } from '@deepseek-ai/dsh-client-ui-settings-plugins/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')
+// These specs assert the shipped Chinese copy. The lane has no jsdom `window`,
+// so browser-language detection never runs and a fresh LocaleRuntime opens on
+// FALLBACK_LOCALE (en); bench stages zh explicitly on the locale instead.
 
 /**
  * @param served - namespaces the Host describes; omitted answers a failed read,
@@ -25,6 +24,7 @@ async function bench(served?: string[]) {
   const ctx = new Context()
   await ctx.plugin(SlotRegistry).await()
   const locale = new LocaleRuntime(ctx)
+  locale.setLocale('zh')
   ctx.provide('locale', locale)
   const describeCredentials = vi.fn(() => Promise.resolve({ rpcId: 'c', result: { ok: false, error: {} } }))
   const describeSettings = vi.fn(() => Promise.resolve(served === undefined
@@ -53,7 +53,7 @@ async function bench(served?: string[]) {
       credentials: { describe: describeCredentials },
     },
   } as never)
-  await ctx.plugin(SettingsScopeBinder, new SettingsSchemaService(ctx)).await()
+  await ctx.plugin({ inject: [...settingsInject], apply: settingsApply }).await()
   return { ctx, slots: ctx.get('slots') as SlotRegistry, describeCredentials, describeSettings }
 }
 

packages/client/ui-settings-plugins/tests/stores.client.spec.ts

@@ -8,6 +8,9 @@ import { stubSettingsScope, type StubSettingsScope } from '@deepseek-ai/dsh-clie
 import { CardForm, numberField, textField } from '../src/client/card-form.ts'
 import { AgentLoopCardController, type AgentLoopSettings } from '../src/client/agent-loop-card-controller.ts'
 import { BashCardController, type BashSettings } from '../src/client/bash-card-controller.ts'
+import {
+  SettingsDescribeMirror, type SettingsMirrorSnapshot,
+} from '@deepseek-ai/dsh-client-ui-settings/src/client/settings-mirror.ts'
 import { ConfigurablePluginsTabController } from '../src/client/tab-store.ts'
 import { WebSearchCardController, type WebSearchSettings } from '../src/client/web-search-card-controller.ts'
 
@@ -555,7 +558,7 @@ describe('ConfigurablePluginsTabController', () => {
         },
       },
     }))
-    return { api: { settings: { describe } } as never, describe }
+    return { mirror: new SettingsDescribeMirror({ settings: { describe } } as never), describe }
   }
 
   /** Slot ledger stand-in: one stored entry per registered card key. */
@@ -565,9 +568,9 @@ describe('ConfigurablePluginsTabController', () => {
 
   it('dispatches the served namespaces a card claims, in card registration order', async () => {
     const settings = settingsApi(['bash', 'ui-theme', 'agent-loop'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('agent-loop', 'bash'))
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => ledger('agent-loop', 'bash'))
 
-    await controller.load()
+    await settings.mirror.ensure()
 
     // ui-theme is served but claimed by no card here — another surface owns
     // it. The order is the cards', not the Host's: plugin activation can
@@ -578,9 +581,9 @@ describe('ConfigurablePluginsTabController', () => {
 
   it('never dispatches a card whose namespace this deployment does not serve', async () => {
     const settings = settingsApi(['bash'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('bash', 'web-search-deepseek'))
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => ledger('bash', 'web-search-deepseek'))
 
-    await controller.load()
+    await settings.mirror.ensure()
 
     expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual(['bash'])
   })
@@ -588,8 +591,8 @@ describe('ConfigurablePluginsTabController', () => {
   it('takes a card registered after the read without asking the Host again', async () => {
     const settings = settingsApi(['bash'])
     let entries = ledger()
-    const controller = new ConfigurablePluginsTabController(settings.api, () => entries)
-    await controller.load()
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => entries)
+    await settings.mirror.ensure()
     expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual([])
 
     entries = ledger('bash')
@@ -599,34 +602,33 @@ describe('ConfigurablePluginsTabController', () => {
     expect(settings.describe).toHaveBeenCalledOnce()
   })
 
-  it('keeps the namespaces it knew when a read fails', async () => {
+  it('keeps the namespaces it knew when a refresh fails', async () => {
     const settings = settingsApi(['bash'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('bash'))
-    await controller.load()
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => ledger('bash'))
+    await settings.mirror.ensure()
     settings.describe.mockRejectedValueOnce(new Error('offline'))
 
-    await controller.load()
+    await settings.mirror.load()
 
     expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual(['bash'])
   })
 
-  it('publishes nothing once disposed, and never claims it was answered', async () => {
+  it('stops following the mirror once disposed, and never claims it was answered', async () => {
     const settings = settingsApi(['bash'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('bash'))
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => ledger('bash'))
 
     controller.dispose()
-    await controller.load()
+    await settings.mirror.load()
 
     expect(controller.inject().hooks.configurablePlugins.getSnapshot())
       .toEqual({ loaded: false, namespaces: [] })
-    expect(settings.describe).not.toHaveBeenCalled()
   })
 
   it('ignores a slot-ledger change that arrives after disposal', async () => {
     const settings = settingsApi(['bash'])
     let entries = ledger()
-    const controller = new ConfigurablePluginsTabController(settings.api, () => entries)
-    await controller.load()
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => entries)
+    await settings.mirror.ensure()
 
     controller.dispose()
     entries = ledger('bash')
@@ -635,33 +637,49 @@ describe('ConfigurablePluginsTabController', () => {
     expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual([])
   })
 
-  it('drops a read a newer one superseded', async () => {
-    // The section re-reads on every settings-document invalidation, so a slow
-    // first answer must not overwrite the newer one that already landed.
-    const settings = settingsApi(['bash'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('bash', 'agent-loop'))
-    const slow = Promise.withResolvers<unknown>()
-    settings.describe.mockReturnValueOnce(slow.promise as never)
-    const stale = controller.load()
+  it('ignores a mirror notification already queued when disposal starts', () => {
+    let notify = (): void => {}
+    let snapshot: SettingsMirrorSnapshot = {
+      status: 'ready' as const,
+      view: { writable: true, hasDocument: true, namespaces: [] },
+      error: null,
+    }
+    const describeFace = {
+      getSnapshot: () => snapshot,
+      subscribe: (listener: () => void) => {
+        notify = listener
+        return () => {}
+      },
+      ensure: () => Promise.resolve(),
+      acceptView: vi.fn(),
+    } as never
+    const controller = new ConfigurablePluginsTabController(describeFace, () => ledger('bash'))
+    expect(controller.inject().hooks.configurablePlugins.getSnapshot())
+      .toEqual({ loaded: true, namespaces: [] })
 
-    await controller.load()
-    expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual(['bash'])
-    slow.resolve({
-      rpcId: 's-0',
-      result: { ok: true, value: { writable: true, hasDocument: true, namespaces: [
-        { ns: 'agent-loop', schema: {}, value: {}, applies: 'live', secrets: [], revision: 0 },
-      ] } },
-    })
-    await stale
+    controller.dispose()
+    snapshot = {
+      status: 'ready',
+      view: {
+        writable: true,
+        hasDocument: true,
+        namespaces: [{
+          ns: 'bash', schema: {}, value: {}, applies: 'live', secrets: [], revision: 1,
+        }],
+      },
+      error: null,
+    }
+    notify()
 
-    expect(controller.inject().hooks.configurablePlugins.getSnapshot().namespaces).toEqual(['bash'])
+    expect(controller.inject().hooks.configurablePlugins.getSnapshot())
+      .toEqual({ loaded: true, namespaces: [] })
   })
 
   it('reports the Host answered even when it serves nothing this tab shows', async () => {
     const settings = settingsApi(['ui-theme'])
-    const controller = new ConfigurablePluginsTabController(settings.api, () => ledger('bash'))
+    const controller = new ConfigurablePluginsTabController(settings.mirror, () => ledger('bash'))
 
-    await controller.load()
+    await settings.mirror.ensure()
 
     expect(controller.inject().hooks.configurablePlugins.getSnapshot())
       .toEqual({ loaded: true, namespaces: [] })

packages/client/ui-settings/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-settings/README.md
-README.md: 723e6f7120c256406daedd2085eef055b72263fe
-README.zh.md: 42f6f6e09ee520542ddc74344be5619adf5adf02
+README.md: 990469573309b3a92b5eeb8bc41d89b226dbd0d4
+README.zh.md: a0ce9d5cf6d4633cec9fbf466083c7a11a947e8e

packages/client/ui-settings/README.md

@@ -4,8 +4,7 @@ English | [中文](README.zh.md)
 
 The settings domain's base layer, with no presentation of its own. It provides `ctx.settingsScope`, the Host transport every preference row binds its durable namespace section through; `ctx.settingsSchema`, the synchronous schema-rehydration, validation, and immutable path-editing service used by settings plugins; and the settings slot types registrants fill: `settings.trigger` / `settings.header` / `settings.close` (chrome content), `settings.action` (ordered content-header actions), `settings.section` (one page per feature), `settings.plugins.tab` (feature-owned pages inside the Plugins section), and `settings.onboarding` (ordered feature-owned pages). It depends on no `ui-*` presentation package, so any feature that owns a preference can reach it; the settings SHELL — the `sidebar.settings` occupant, its navigation, and the chrome — lives in ui-settings-general, because a shell dependency on ui-sidebar would close a reference graph cycle through ui-layout and ui-theme. The shell's own contract types live beside the shell for the same reason.
 
-The plugin injects nothing and waits for nothing: schema operations are synchronous, while `ctx.settingsScope.bind(spec)` resolves the wire face through the caller's context at call time. The bound scope's disposer belongs to the calling fiber, and the caller injects `connection` for the transport and `remote` for invalidation. Listeners exist before the first background read starts, so a row's activation never blocks on the settings transport. A bound scope reloads on the forwarded `settings/document-updated` event for its own namespace and on `connection/reset`. Writes carry one field path and the last known namespace revision as `expectedRevision`; a rejected or failed write re-reads unless a newer write already superseded it, and a stale read never publishes over a newer one. The snapshot carries the resolved section, composition `base`, raw `user`, revision, writability, and host/memory mode. A field is overridden when it is present in `user`, even when its value equals `base`; `unset` clears that override. Without a `decode` in the spec, a section that is not a plain object, fails its rehydrated schema, or carries a schema envelope this client cannot rehydrate publishes no value at all, so a row renders its own absent state instead of a half-decoded one.
-
+The plugin injects `connection` and `remote` and owns the one `settings.describe` reader in the browser: a shared mirror holding the whole answer, refreshed on every forwarded `settings/document-updated` event and on `connection/reset` (the first connection included — that read closes the window where a commit lands between the eager read and the SSE subscription). Schema operations are synchronous and live on the `settingsSchema` service. `ctx.settingsScope.bind(spec)` returns a per-namespace scope DERIVED from the mirror on the CALLER's context — the scope's disposer belongs to the calling fiber, binding adds no wire read, a row's activation never blocks on the settings transport, and every derived surface shows the same document revision at any moment. Cross-namespace surfaces (schema introspection, the served-namespace directory, `hasDocument`) read the same mirror through `ctx.settingsScope.describe()`, a read/fold face (`getSnapshot`/`subscribe`/`ensure`, plus `acceptView` folding a write answer in). The scope snapshot carries the resolved section, composition `base`, raw `user`, revision, writability, and host/memory mode; a field is overridden when it is present in `user`, even when its value equals `base`, and `unset` clears that override. Writes stay per-scope: one field path fenced by the namespace revision as `expectedRevision`; a committed write folds its answer back into the mirror with no re-read, a rejected or failed latest write triggers one mirror recovery read, and a superseded one leaves recovery to its successor. Without a `decode` in the spec, a section that is not a plain object, fails its rehydrated schema, or carries a schema envelope this client cannot rehydrate publishes no value at all, so a row renders its own absent state instead of a half-decoded one. The cold-boot read count is pinned by `apps/web/tests/startup-rpc-budget.e2e.ts`; a new direct `settings.describe` caller in client code is a regression against it.
 ## Model Experience
 
 None, as the settings domain base serves browser preference storage and slot declarations; nothing here reaches a model request.

packages/client/ui-settings/README.zh.md

@@ -4,8 +4,7 @@
 
 设置领域的底座，本身不含任何呈现内容。它提供 `ctx.settingsScope`——每个偏好设置行绑定自己那份持久化命名空间分区所用的宿主传输层；`ctx.settingsSchema`——设置插件使用的同步 schema 重建、校验与不可变路径编辑服务；并声明由注册方填充的设置 slot 类型：`settings.trigger`／`settings.header`／`settings.close`（界面框架内容）、`settings.action`（内容标题栏中的有序操作）、`settings.section`（每项功能一页）、`settings.plugins.tab`（“插件”分区内由各功能持有的页面）和 `settings.onboarding`（由各功能持有的有序页面）。它不依赖任何 `ui-*` 呈现包，因此任何持有偏好设置的功能都能够到它；设置**外壳**——`sidebar.settings` 占位方、它的导航与界面框架——位于 ui-settings-general，因为外壳一旦依赖 ui-sidebar，就会经 ui-layout 与 ui-theme 闭合出一条引用图环路。外壳自身的契约类型出于同一原因与外壳放在一起。
 
-该插件不注入任何服务、也不等待任何服务：schema 操作为同步调用，而 `ctx.settingsScope.bind(spec)` 在调用时经调用方的 context 解析线路面。绑定所得 scope 的 disposer 归调用方 fiber 所有，而由调用方注入 `connection` 取得传输层、注入 `remote` 取得失效通知。监听器在首次后台读取启动之前就已存在，因此某一行的激活绝不会阻塞在设置传输层上。已绑定的 scope 会在收到属于自己命名空间的转发 `settings/document-updated` 事件时、以及在 `connection/reset` 时重新读取。写入携带单一字段路径以及最近已知的命名空间 revision 作为 `expectedRevision`；被拒绝或失败的写入会重新读取，除非已有更新的写入取代了它，而陈旧的读取绝不会覆盖更新的发布结果。快照携带解析后的分区、组合 `base`、原始 `user`、revision、可写性以及 host／内存模式。字段只要出现在 `user` 中即视为覆盖，即使其值与 `base` 相等；`unset` 会清除该覆盖。若 spec 未提供 `decode`，则分区不是普通对象、未通过其重建后的 schema 校验、或携带本客户端无法重建的 schema 信封时，一律不发布任何值，于是行渲染自己的缺失状态，而不是一份半解码的值。
-
+该插件注入 `connection` 与 `remote`，并持有浏览器中唯一的 `settings.describe` 读取方：一面持有完整应答的共享镜像，在每次转发的 `settings/document-updated` 事件与 `connection/reset` 时刷新（首次连接也包含在内——这次读取关闭了「提交落在急切读取与 SSE 订阅之间、其失效通知丢失」的窗口）。schema 操作为同步调用，由 `settingsSchema` 服务承载。`ctx.settingsScope.bind(spec)` 在**调用方**的 context 上返回一个由镜像**派生**的按命名空间 scope——scope 的 disposer 归调用方 fiber 所有，绑定不新增任何线路读取，某一行的激活绝不会阻塞在设置传输层上，且任一时刻每个派生面看到的都是同一份文档 revision。跨命名空间的表面（schema 内省、已服务命名空间目录、`hasDocument`）通过 `ctx.settingsScope.describe()` 读同一面镜像，这是一个读取／折叠面（`getSnapshot`／`subscribe`／`ensure`，另有把写应答折入的 `acceptView`）。scope 快照携带解析后的分区、组合 `base`、原始 `user`、revision、可写性以及 host／内存模式；字段只要出现在 `user` 中即视为覆盖，即使其值与 `base` 相等，`unset` 会清除该覆盖。写入仍归各 scope：单一字段路径，以命名空间 revision 作为 `expectedRevision` 围栏；提交成功的写入将应答折回镜像、不再重读，被拒绝或失败的最新写入触发一次镜像恢复读取，被取代的写入则把恢复留给后继者。若 spec 未提供 `decode`，则分区不是普通对象、未通过其重建后的 schema 校验、或携带本客户端无法重建的 schema 信封时，一律不发布任何值，于是行渲染自己的缺失状态，而不是一份半解码的值。冷启动读取次数由 `apps/web/tests/startup-rpc-budget.e2e.ts` 钉住；客户端代码中新增直连 `settings.describe` 调用即是对它的回归。
 ## 模型体验
 
 无。设置领域底座为浏览器提供偏好设置存储与 slot 声明；这里没有任何内容进入模型请求。

packages/client/ui-settings/src/client/index.ts

@@ -1,16 +1,26 @@
 /**
  * Settings domain base plugin, browser half. Provides `ctx.settingsScope`, the
- * settings-namespace Host transport every preference row binds its durable
- * section through, and owns the canonical slot-type contract for the settings
- * surface. It depends on no `ui-*` presentation package, so any feature that
- * owns a preference can reach it: the settings SHELL — the `sidebar.settings`
- * occupant, its navigation, and the chrome — lives in ui-settings-general,
- * because a shell dependency on ui-sidebar would close a reference cycle
- * through ui-layout and ui-theme. Export discipline: packages/client/AGENTS.md.
+ * settings-namespace scope service every preference row binds its durable
+ * section through, and owns the one `settings.describe` reader in the browser:
+ * the describe mirror, whose invalidation subscriptions
+ * (`settings/document-updated`, `connection/reset`) live here so every derived
+ * surface refreshes from a single wire read. It depends on no `ui-*`
+ * presentation package, so any feature that owns a preference can reach it:
+ * the settings SHELL — the `sidebar.settings` occupant, its navigation, and
+ * the chrome — lives in ui-settings-general, because a shell dependency on
+ * ui-sidebar would close a reference cycle through ui-layout and ui-theme.
+ * Export discipline: packages/client/AGENTS.md.
  */
 import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
+import type { ConnectionHandle } from '@deepseek-ai/dsh-api-remotes/client'
+// Type-only pair supplying `$on` and its key face without dragging a build
+// artifact into the Host graph (rationale beside the same pair in
+// settings-scope.ts).
+import type {} from '@deepseek-ai/dsh-api-remotes/types'
+import type {} from '@deepseek-ai/dsh-settings/types'
 import { SettingsSchemaService } from './schema.ts'
 import { SettingsScopeBinder } from './settings-scope.ts'
+import { SettingsDescribeMirror } from './settings-mirror.ts'
 
 export type {
   SettingsGeneralItemOwnerProps, SettingsHeaderOwnerProps, SettingsOnboardingOwnerProps,
@@ -19,15 +29,18 @@ export type {
 export type { SettingsScopeController, SettingsScopeBinder } from './settings-scope.ts'
 export type { SettingsSchemaService } from './schema.ts'
 export type { SchemaNode } from './schema.ts'
+export type { SettingsDescribeFace, SettingsDescribeView, SettingsMirrorSnapshot } from './settings-mirror.ts'
 
 /**
- * Required services: none. The transport is resolved per caller through
- * `this.ctx` at `bind` time, so this plugin waits for nothing.
+ * Required services: the wire handle for the mirror's reads and the forwarded
+ * settings invalidation the mirror refreshes on.
  */
-export const inject = []
+export const inject = ['connection', 'remote']
 
 /**
- * Provide the settings-namespace scope service.
+ * Provide the settings-namespace scope service over one shared describe
+ * mirror, and keep that mirror fresh on the two signals that can move the
+ * settings document: a document commit and a (re)connect.
  *
  * Constructing the service in this plugin's fiber keeps its traced methods
  * bound to each consuming plugin's context.
@@ -35,5 +48,22 @@ export const inject = []
  */
 export function apply(ctx: ClientContext): void {
   const schema = new SettingsSchemaService(ctx)
-  new SettingsScopeBinder(ctx, schema)
+  const connection = ctx.get('connection') as ConnectionHandle
+  const mirror = new SettingsDescribeMirror(
+    connection.api,
+    connection.isLoopback ? 'host' : 'memory',
+  )
+  ctx.effect(() => {
+    const disposers = [
+      (ctx.get('remote') as ClientContext['remote']).$on('settings/document-updated', () => { void mirror.load() }),
+      ctx.on('connection/reset', () => { void mirror.load() }),
+    ]
+    // The first connection also emits connection/reset, so startup normally
+    // costs two reads (budgeted in startup-rpc-budget.e2e.ts). The in-flight
+    // fold does not merge them into one; it guarantees at most one pending
+    // read at a time and that no invalidation arriving mid-read is lost.
+    void mirror.ensure()
+    return () => { for (const dispose of disposers) dispose() }
+  }, 'ui-settings: describe mirror invalidations')
+  new SettingsScopeBinder(ctx, { mirror, schema })
 }

packages/client/ui-settings/src/client/settings-mirror.ts

@@ -0,0 +1,213 @@
+/**
+ * Client mirror of the Host settings document: the one `settings.describe`
+ * reader in the browser. Every settings consumer derives from this store —
+ * per-namespace scopes through `SettingsScopeBinder.bind`, cross-namespace
+ * surfaces through the binder's shared describe face — so startup cost and
+ * freshness are properties of this class, not of how many features own a
+ * preference. The Host stays the fact source: the mirror re-reads on the
+ * invalidations its owning plugin subscribes to and folds write answers in
+ * through {@link SettingsDescribeMirror.acceptView}.
+ */
+
+import type { IApiClient, SettingsNamespaceView } from '@deepseek-ai/dsh-api-remotes/client'
+import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+
+type SettingsFace = Pick<IApiClient, 'settings'>
+
+/** The full `settings.describe` answer the mirror serves. */
+export interface SettingsDescribeView {
+  /** Every namespace a live Host plugin registered, as the Host reported it. */
+  namespaces: readonly SettingsNamespaceView[]
+  /** Whether the settings provider accepts writes. */
+  writable: boolean
+  /** Whether a native settings document exists for the Host to open. */
+  hasDocument: boolean
+}
+
+/** Mirror state every derived settings surface renders from. */
+export interface SettingsMirrorSnapshot {
+  /**
+   * `unavailable` is the terminal non-loopback state; `ready` persists across
+   * later failed refreshes (the held view keeps serving); `idle` means no
+   * answer is held and no read is running, so `ensure` will start one.
+   */
+  status: 'idle' | 'loading' | 'ready' | 'unavailable'
+  /** The last good answer; undefined until the first success. */
+  view: SettingsDescribeView | undefined
+  /** The latest refresh failure message, cleared by the next success. */
+  error: string | null
+}
+
+/**
+ * The mirror as cross-namespace surfaces consume it: current answer,
+ * subscription, first-use read, and the write-answer fold. `load` stays off
+ * this face — invalidation refreshes belong to the mirror's owning plugin.
+ */
+export interface SettingsDescribeFace {
+  /** @returns the current sync snapshot (stable reference until the next change). */
+  getSnapshot(): SettingsMirrorSnapshot
+  /**
+   * Observe snapshot replacements.
+   * @param listener - invoked after each snapshot change.
+   * @returns the disposer removing this listener.
+   */
+  subscribe(listener: () => void): () => void
+  /**
+   * Resolve once an answer is held (or the mirror is terminally unavailable),
+   * reading only from `idle`.
+   * @returns settlement of the current or newly started read, if any.
+   */
+  ensure(): Promise<void>
+  /**
+   * Fold one write answer's namespace view into the held view without a wire
+   * read, invalidating any older read still in flight.
+   * @param view - the namespace view a settings write answered with.
+   */
+  acceptView(view: SettingsNamespaceView): void
+}
+
+/**
+ * Serializes every Host `settings.describe` read behind one snapshot store.
+ * Concurrent {@link load} calls fold into the in-flight read plus one rerun,
+ * so an invalidation arriving mid-read is never lost and never duplicated.
+ */
+export class SettingsDescribeMirror implements SettingsDescribeFace {
+  private readonly store: SnapshotStore<SettingsMirrorSnapshot>
+  private inFlight: Promise<void> | undefined
+  private rerun = false
+  private generation = 0
+
+  /**
+   * @param api - settings wire face.
+   * @param persistence - remote browsers stay process-local because settings RPCs are loopback-only.
+   */
+  constructor(
+    private readonly api: SettingsFace,
+    private readonly persistence: 'host' | 'memory' = 'host',
+  ) {
+    this.store = createSnapshotStore<SettingsMirrorSnapshot>({
+      status: persistence === 'host' ? 'idle' : 'unavailable',
+      view: undefined,
+      error: null,
+    })
+  }
+
+  /** @returns the current sync snapshot (stable reference until the next change). */
+  getSnapshot(): SettingsMirrorSnapshot {
+    return this.store.getSnapshot()
+  }
+
+  /**
+   * Observe snapshot replacements.
+   * @param listener - invoked after each snapshot change.
+   * @returns the disposer removing this listener.
+   */
+  subscribe(listener: () => void): () => void {
+    return this.store.subscribe(listener)
+  }
+
+  /**
+   * Refresh from the Host. A call during an in-flight read marks one rerun
+   * after it settles instead of racing a second wire read.
+   * @returns settlement after this call's freshness is reflected.
+   */
+  load(): Promise<void> {
+    if (this.persistence === 'memory') return Promise.resolve()
+    if (this.inFlight !== undefined) {
+      this.rerun = true
+      return this.inFlight
+    }
+    // Own the slot before the loading publication can synchronously reenter load().
+    const run = Promise.resolve().then(() => this.run())
+    this.inFlight = run
+    return run
+  }
+
+  /**
+   * Resolve once an answer is held (or the mirror is terminally unavailable),
+   * reading only from `idle`. The cheap idempotent entry for surfaces that
+   * render on first use.
+   * @returns settlement of the current or newly started read, if any.
+   */
+  ensure(): Promise<void> {
+    if (this.persistence === 'memory') return Promise.resolve()
+    if (this.inFlight !== undefined) return this.inFlight
+    if (this.getSnapshot().status === 'idle') return this.load()
+    return Promise.resolve()
+  }
+
+  /**
+   * Fold one write answer's namespace view into the held view without a wire
+   * read, and invalidate any read still in flight. With no held document, the
+   * answer is not published as a partial document; an in-flight read reruns so
+   * it cannot publish a document fetched before the write committed.
+   * @param view - the namespace view a settings write answered with.
+   */
+  acceptView(view: SettingsNamespaceView): void {
+    const before = this.store.getSnapshot()
+    this.generation += 1
+    if (this.inFlight !== undefined) this.rerun = true
+    if (before.view === undefined) return
+    const namespaces = before.view.namespaces.some(row => row.ns === view.ns)
+      ? before.view.namespaces.map(row => row.ns === view.ns ? view : row)
+      : [...before.view.namespaces, view]
+    this.store.set({ ...before, view: { ...before.view, namespaces } })
+  }
+
+  /**
+   * Convenience row lookup on the held view.
+   * @param ns - namespace identity.
+   * @returns the namespace view, or undefined while unanswered or unregistered.
+   */
+  namespace(ns: string): SettingsNamespaceView | undefined {
+    return this.store.getSnapshot().view?.namespaces.find(row => row.ns === ns)
+  }
+
+  private async run(): Promise<void> {
+    // The in-flight slot must clear in the same synchronous segment that
+    // observes `rerun` false (and on abrupt exit): a `.finally()` on the
+    // returned promise runs one microtask later, and a `load()` landing in
+    // that gap would mark a rerun nobody reads, losing the read.
+    try {
+      do {
+        const before = this.store.getSnapshot()
+        if (before.status === 'idle') this.store.set({ ...before, status: 'loading' })
+        // Cleared immediately before the wire read goes out: a load() marked
+        // earlier (including one reentering from the loading publish above)
+        // is covered by this very read, while one landing after needs the
+        // rerun.
+        this.rerun = false
+        const generation = ++this.generation
+        let outcome: { view: SettingsDescribeView } | { failure: string }
+        try {
+          const response = await this.api.settings.describe({})
+          outcome = response.result.ok
+            ? { view: response.result.value }
+            : { failure: response.result.error.message }
+        } catch (error) {
+          outcome = { failure: error instanceof Error ? error.message : String(error) }
+        }
+        // A write answer invalidates a document read before that write committed.
+        if (generation !== this.generation) continue
+        if ('view' in outcome) {
+          this.store.set({ status: 'ready', view: outcome.view, error: null })
+        } else {
+          const held = this.store.getSnapshot()
+          // No answer yet: fall back to idle so `ensure` retries; with one, the
+          // held view keeps serving and only the error field reports the miss.
+          this.store.set({
+            status: held.view === undefined ? 'idle' : 'ready',
+            view: held.view,
+            error: outcome.failure,
+          })
+        }
+      } while (this.shouldRerun())
+    } finally {
+      this.inFlight = undefined
+    }
+  }
+
+  private shouldRerun(): boolean {
+    return this.rerun
+  }
+}

packages/client/ui-settings/src/client/settings-scope.ts

@@ -1,8 +1,11 @@
 /**
  * Host transport for the settings-namespace scope contract. The contract types
  * live in `dsh-client-runtime` (the common dependency of every feature that
- * owns a preference); this file owns the wire behavior and the invalidation
- * subscription, both of which are Settings-surface concerns.
+ * owns a preference); this file owns the per-namespace derivation over the
+ * shared {@link SettingsDescribeMirror} and the serialized write path, both of
+ * which are Settings-surface concerns. Reads never touch the wire here: the
+ * mirror is the one `settings.describe` reader, and every scope is a selector
+ * over its snapshot.
  */
 
 import { Service } from '@deepseek-ai/cordis'
@@ -21,8 +24,8 @@ import {
 // Client half declares `ctx.remote` with no generated import, and the
 // allowlist's `types` subpath is a pure-type source file, so the pair supplies
 // `$on` and its key face without dragging a build artifact in. The runtime
-// `remote` injection belongs to whoever calls `ctx.settingsScope.bind(spec)`: the
-// subscription is registered on the caller's own context.
+// `remote` injection belongs to the providing plugin's apply, which registers
+// the mirror's invalidation subscriptions.
 import type {} from '@deepseek-ai/dsh-api-remotes/client'
 import type {} from '@deepseek-ai/dsh-api-remotes/types'
 // The forwarded event's own declaration: `$on`'s key face is
@@ -31,30 +34,40 @@ import type {} from '@deepseek-ai/dsh-api-remotes/types'
 // cordis `Events` entry (and with it the branded `SettingsNamespace`).
 import type {} from '@deepseek-ai/dsh-settings/types'
 import type { SettingsSchemaService } from './schema.ts'
+import { SettingsDescribeMirror, type SettingsDescribeFace } from './settings-mirror.ts'
+
 type SettingsFace = Pick<IApiClient, 'settings'>
 
 /**
- * Serializes one namespace's Host reads and writes behind a snapshot store.
- * Reads never block plugin activation; writes carry the latest known
- * namespace revision and teardown waits for the operation already crossing
- * the wire.
+ * One namespace's derived view over the shared describe mirror, plus that
+ * namespace's serialized Host writes. Writes carry the latest known namespace
+ * revision, fold their answers back into the mirror, and teardown waits for
+ * the operation already crossing the wire.
  */
 export class SettingsScopeController<T> implements SettingsScope<T> {
   private readonly store: SnapshotStore<SettingsScopeSnapshot<T>>
   private tail: Promise<void> = Promise.resolve()
-  private readGeneration = 0
   private writeGeneration = 0
   private disposed = false
+  private readonly unsubscribe: (() => void) | undefined
+  /**
+   * Revision answered by a superseded write still ahead of the mirror: the
+   * mirror only folds the LATEST settlement in, so a queued successor takes
+   * its fence from here first.
+   */
+  private pendingRevision: number | undefined
 
   /**
-   * @param api - settings wire face.
+   * @param api - settings wire face (writes only; reads ride the mirror).
    * @param spec - namespace identity and optional narrowing decoder.
+   * @param mirror - the shared describe mirror this scope derives from.
    * @param persistence - remote browsers remain process-local because settings RPCs are loopback-only.
    * @param schema - settings-owned schema operations.
    */
   constructor(
     private readonly api: SettingsFace,
     private readonly spec: SettingsScopeSpec<T>,
+    private readonly mirror: SettingsDescribeMirror,
     private readonly persistence: 'host' | 'memory',
     private readonly schema: SettingsSchemaService,
   ) {
@@ -67,6 +80,10 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
       writable: false,
       mode: persistence,
     })
+    if (persistence === 'host') {
+      this.unsubscribe = mirror.subscribe(() => { this.derive() })
+      this.derive()
+    }
   }
 
   /** @returns the current sync snapshot (stable reference until the next change). */
@@ -83,15 +100,6 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
     return this.store.subscribe(listener)
   }
 
-  /**
-   * Queue a Host refresh; a newer read or user write suppresses stale publication.
-   * @returns settlement after the queued read completes or is skipped.
-   */
-  load(): Promise<void> {
-    const generation = ++this.readGeneration
-    return this.enqueue(() => this.read(generation))
-  }
-
   /**
    * Queue one field write; see {@link SettingsScope.set} for the ordering,
    * revision, and recovery contract.
@@ -114,10 +122,9 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
   }
 
   private write(op: SettingsPathOpView): Promise<void> {
-    this.readGeneration += 1
     const generation = ++this.writeGeneration
     return this.enqueue(async () => {
-      const revision = this.getSnapshot().revision
+      const revision = this.pendingRevision ?? this.getSnapshot().revision
       let response: Awaited<ReturnType<SettingsFace['settings']['mutate']>>
       try {
         response = await this.api.settings.mutate({
@@ -126,25 +133,39 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
           ...(revision === undefined ? {} : { expectedRevision: revision }),
         })
       } catch (_settingsWriteFailure) {
-        if (!this.disposed && generation === this.writeGeneration) await this.read(++this.readGeneration)
+        await this.recover(generation)
         return
       }
       if (!response.result.ok) {
-        if (!this.disposed && generation === this.writeGeneration) await this.read(++this.readGeneration)
+        await this.recover(generation)
         return
       }
-      this.accept(response.result.value, generation === this.writeGeneration)
+      if (this.disposed) return
+      if (generation === this.writeGeneration) {
+        this.pendingRevision = undefined
+        this.mirror.acceptView(response.result.value)
+      } else {
+        this.pendingRevision = response.result.value.revision
+      }
     })
   }
 
+  /** Reload Host state for the latest failed write; superseded failures leave recovery to it. */
+  private async recover(generation: number): Promise<void> {
+    if (this.disposed || generation !== this.writeGeneration) return
+    this.pendingRevision = undefined
+    await this.mirror.load()
+  }
+
   /**
-   * Stop queued operations and wait for the current wire call to settle.
+   * Stop queued operations, stop deriving, and wait for the current wire call
+   * to settle.
    * @returns settlement after the controller reaches quiescence.
    */
   async dispose(): Promise<void> {
     this.disposed = true
-    this.readGeneration += 1
     this.writeGeneration += 1
+    this.unsubscribe?.()
     await this.tail
   }
 
@@ -160,36 +181,25 @@ export class SettingsScopeController<T> implements SettingsScope<T> {
     return task
   }
 
-  private async read(generation: number): Promise<void> {
-    let response: Awaited<ReturnType<SettingsFace['settings']['describe']>>
-    try {
-      response = await this.api.settings.describe({})
-    } catch (_settingsReadFailure) {
-      return
-    }
-    if (!response.result.ok || this.disposed) return
-    const { namespaces, writable } = response.result.value
-    const view = namespaces.find(candidate => candidate.ns === this.spec.namespace)
-    const publish = generation === this.readGeneration
+  private derive(): void {
+    if (this.disposed) return
+    const mirrored = this.mirror.getSnapshot()
+    if (mirrored.view === undefined) return
+    const { writable } = mirrored.view
+    const view = mirrored.view.namespaces.find(candidate => candidate.ns === this.spec.namespace)
     if (view === undefined) {
-      if (publish) {
-        this.store.update((draft) => {
-          draft.status = 'unavailable'
-          draft.writable = writable
-        })
-      }
+      this.store.update((draft) => {
+        draft.status = 'unavailable'
+        draft.writable = writable
+      })
       return
     }
-    this.accept(view, publish, writable)
-  }
-
-  private accept(view: SettingsNamespaceView, publish: boolean, writable?: boolean): void {
-    const decoded = publish ? this.decode(view) : undefined
+    const decoded = this.decode(view)
     this.store.update((draft) => {
       draft.revision = view.revision
       draft.base = view.base
       draft.user = view.user
-      if (writable !== undefined) draft.writable = writable
+      draft.writable = writable
       if (decoded === undefined) return
       draft.status = 'ready'
       draft.value = decoded
@@ -227,20 +237,38 @@ declare module '@deepseek-ai/cordis' {
  * (`packages/client/tsdown.client.ts`).
  */
 export class SettingsScopeBinder extends Service {
+  private readonly mirror: SettingsDescribeMirror
+  private readonly schema: SettingsSchemaService
+
   /**
    * @param ctx - the providing plugin's context.
+   * @param config - the shared describe mirror every bound scope derives from,
+   * plus the settings-owned schema operations.
    */
-  constructor(ctx: Context, private readonly schema: SettingsSchemaService) {
+  constructor(ctx: Context, config: { mirror: SettingsDescribeMirror; schema: SettingsSchemaService }) {
     super(ctx, 'settingsScope')
+    this.mirror = config.mirror
+    this.schema = config.schema
+  }
+
+  /**
+   * The shared mirror's read/fold face for cross-namespace surfaces (schema
+   * introspection, the served-namespace directory). Per-namespace consumers
+   * use {@link bind}; both derive from the same snapshot, so they can never
+   * disagree about the document.
+   * @returns the describe face over the shared mirror.
+   */
+  describe(): SettingsDescribeFace {
+    return this.mirror
   }
 
   /**
-   * Bind one namespace scope to settings and connection invalidations on the
-   * CALLER's plugin lifecycle — the service proxy binds `this.ctx` to the
-   * caller at call time, so the scope's disposer belongs to the calling fiber.
-   * Listeners exist before the initial background read starts, so activation
-   * never blocks on the settings transport. The caller injects `connection`
-   * for the transport and `remote` for the forwarded settings invalidation.
+   * Bind one namespace scope on the CALLER's plugin lifecycle — the service
+   * proxy binds `this.ctx` to the caller at call time, so the scope's disposer
+   * belongs to the calling fiber. The scope derives from the shared mirror
+   * (whose invalidation subscriptions live with the providing plugin), so
+   * binding adds no wire read of its own and activation never blocks on the
+   * settings transport.
    * @param spec - domain-owned namespace contract.
    * @returns the bound scope consumed by the domain's services and rows.
    */
@@ -250,21 +278,13 @@ export class SettingsScopeBinder extends Service {
     const controller = new SettingsScopeController<T>(
       connection.api,
       spec,
+      this.mirror,
       connection.isLoopback ? 'host' : 'memory',
       this.schema,
     )
     ctx.effect(() => {
-      const refresh = (namespace?: string): void => {
-        if (namespace !== undefined && namespace !== spec.namespace) return
-        void controller.load()
-      }
-      const disposers = [
-        (ctx.get('remote') as Context['remote']).$on('settings/document-updated', refresh),
-        ctx.on('connection/reset', () => { refresh() }),
-      ]
-      void controller.load()
+      void this.mirror.ensure()
       return async () => {
-        for (const dispose of disposers) dispose()
         await controller.dispose()
       }
     }, `ui-settings: ${spec.namespace} settings scope`)

packages/client/ui-settings/tests/plugin.client.spec.ts

@@ -1,33 +1,60 @@
 /**
  * The settings domain base plugin's own mounting behavior: it stands up
- * `ctx.settingsScope` for every feature that owns a preference row, and the
- * service retires with its fiber.
+ * `ctx.settingsScope` over one shared describe mirror, keeps that mirror
+ * fresh on settings-document and connection-reset invalidations, and retires
+ * both the service and the subscriptions with its fiber.
  */
 import { Context } from '@deepseek-ai/cordis'
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
+import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject } from '../src/client/index.ts'
 import { SettingsSchemaService } from '../src/client/schema.ts'
 import { SettingsScopeBinder } from '../src/client/settings-scope.ts'
 
-/** Boot the browser half over a bare root context; it injects nothing. */
+/** Boot the browser half over a fake loopback connection and test remote. */
 function bench() {
+  const describeCall = vi.fn().mockResolvedValue({
+    rpcId: 'plugin-bench' as never,
+    result: { ok: true, value: { writable: true, hasDocument: true, namespaces: [] } },
+  })
   const ctx = new Context()
-  return { ctx, fiber: ctx.plugin({ inject: [...inject], apply }) }
+  ctx.provide('connection', {
+    api: { settings: { describe: describeCall } },
+    isLoopback: true,
+  } as never)
+  new TestRemote(ctx)
+  return { ctx, describeCall, fiber: ctx.plugin({ inject: [...inject], apply }) }
 }
 
 describe('settings domain base plugin', () => {
-  it('mounts the scope service under settingsScope', async () => {
-    const { ctx, fiber } = bench()
+  it('mounts the scope service under settingsScope and reads once eagerly', async () => {
+    const { ctx, describeCall, fiber } = bench()
     await fiber.await()
     expect(ctx.get('settingsScope')).toBeInstanceOf(SettingsScopeBinder)
     expect(ctx.get('settingsSchema')).toBeInstanceOf(SettingsSchemaService)
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(1) })
+  })
+
+  it('refreshes the mirror on document commits and connection resets, once each', async () => {
+    const { ctx, describeCall, fiber } = bench()
+    await fiber.await()
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(1) })
+    ctx.remote.$dispatch('settings/document-updated', ['ui-test', 0])
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(2) })
+    ctx.emit('connection/reset')
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(3) })
   })
 
-  it('fiber disposal retires the service', async () => {
-    const { ctx, fiber } = bench()
+  it('fiber disposal retires the service and its invalidation subscriptions', async () => {
+    const { ctx, describeCall, fiber } = bench()
     await fiber.await()
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(1) })
     await fiber.dispose()
     expect(ctx.get('settingsScope')).toBeUndefined()
     expect(ctx.get('settingsSchema')).toBeUndefined()
+    ctx.remote.$dispatch('settings/document-updated', ['ui-test', 0])
+    ctx.emit('connection/reset')
+    await Promise.resolve()
+    expect(describeCall).toHaveBeenCalledTimes(1)
   })
 })

packages/client/ui-settings/tests/settings-mirror.client.spec.ts

@@ -0,0 +1,216 @@
+import { describe, expect, it, vi } from 'vitest'
+import type { RpcResponse, SettingsNamespaceView } from '@deepseek-ai/dsh-api-remotes/client'
+import { SettingsDescribeMirror, type SettingsDescribeView } from '../src/client/settings-mirror.ts'
+
+let rpc = 0
+
+function ok<T>(value: T): RpcResponse<T> {
+  return { rpcId: `mirror-${rpc++}` as never, result: { ok: true, value } }
+}
+
+function rejected<T>(message: string): RpcResponse<T> {
+  return {
+    rpcId: `mirror-${rpc++}` as never,
+    result: {
+      ok: false,
+      error: { code: 'settings-rejected', message, details: { ns: 'theme' } },
+    },
+  }
+}
+
+function view(ns: string, revision = 0): SettingsNamespaceView {
+  return { ns, schema: {}, value: { field: ns }, applies: 'live', secrets: [], revision }
+}
+
+function described(namespaces: SettingsNamespaceView[]): RpcResponse<SettingsDescribeView> {
+  return ok({ writable: true, hasDocument: true, namespaces })
+}
+
+function deferred<T>() {
+  let resolve!: (value: T) => void
+  const promise = new Promise<T>((res) => { resolve = res })
+  return { promise, resolve }
+}
+
+describe('SettingsDescribeMirror', () => {
+  it('folds loads before the wire read into it, and mid-flight loads into one rerun', async () => {
+    const gate = deferred<RpcResponse<SettingsDescribeView>>()
+    const describeCall = vi.fn()
+      .mockReturnValueOnce(gate.promise)
+      .mockResolvedValue(described([view('theme', 1)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    const first = mirror.load()
+    // Issued before the wire read goes out: covered by that read, no rerun.
+    const early = mirror.load()
+    await Promise.resolve()
+    expect(describeCall).toHaveBeenCalledTimes(1)
+    // Issued while the read is on the wire: exactly one rerun, however many.
+    const mid = mirror.load()
+    const midToo = mirror.load()
+    gate.resolve(described([view('theme', 0)]))
+    await Promise.all([first, early, mid, midToo])
+    expect(describeCall).toHaveBeenCalledTimes(2)
+    expect(mirror.getSnapshot().status).toBe('ready')
+    expect(mirror.namespace('theme')?.revision).toBe(1)
+  })
+
+  it('keeps the last good view when a later refresh fails, recording the failure', async () => {
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(described([view('theme', 2)]))
+      .mockRejectedValueOnce(new Error('host gone'))
+      .mockResolvedValueOnce(rejected('busy'))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.load()
+    expect(mirror.getSnapshot()).toMatchObject({ status: 'ready', error: null })
+    await mirror.load()
+    expect(mirror.getSnapshot()).toMatchObject({ status: 'ready', error: 'host gone' })
+    expect(mirror.namespace('theme')?.revision).toBe(2)
+    await mirror.load()
+    expect(mirror.getSnapshot()).toMatchObject({ status: 'ready', error: 'busy' })
+    expect(mirror.getSnapshot().view?.namespaces).toHaveLength(1)
+  })
+
+  it('returns to idle after a first read that never succeeded, so ensure retries', async () => {
+    const describeCall = vi.fn()
+      .mockRejectedValueOnce(new Error('offline'))
+      .mockResolvedValueOnce(described([view('theme', 1)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.ensure()
+    expect(mirror.getSnapshot()).toMatchObject({ status: 'idle', view: undefined, error: 'offline' })
+    await mirror.ensure()
+    expect(mirror.getSnapshot()).toMatchObject({ status: 'ready', error: null })
+    expect(describeCall).toHaveBeenCalledTimes(2)
+  })
+
+  it('treats ensure as a no-op once ready', async () => {
+    const describeCall = vi.fn().mockResolvedValue(described([view('theme', 1)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.ensure()
+    await mirror.ensure()
+    await mirror.ensure()
+    expect(describeCall).toHaveBeenCalledTimes(1)
+  })
+
+  it('memory persistence is terminally unavailable and never touches the wire', async () => {
+    const describeCall = vi.fn()
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never, 'memory')
+    await mirror.ensure()
+    await mirror.load()
+    expect(mirror.getSnapshot()).toEqual({ status: 'unavailable', view: undefined, error: null })
+    expect(describeCall).not.toHaveBeenCalled()
+  })
+
+  it('acceptView folds one write answer into the held view without a wire read', async () => {
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(described([view('theme', 1), view('locale', 4)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.load()
+    const seen: number[] = []
+    mirror.subscribe(() => { seen.push(mirror.namespace('theme')?.revision ?? -1) })
+    mirror.acceptView(view('theme', 9))
+    expect(mirror.namespace('theme')?.revision).toBe(9)
+    expect(mirror.namespace('locale')?.revision).toBe(4)
+    expect(seen).toEqual([9])
+    expect(describeCall).toHaveBeenCalledTimes(1)
+  })
+
+  it('acceptView before any answer is a no-op instead of inventing a document', () => {
+    const describeCall = vi.fn()
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    mirror.acceptView(view('theme', 1))
+    expect(mirror.getSnapshot()).toEqual({ status: 'idle', view: undefined, error: null })
+  })
+
+  it('acceptView appends a namespace the held view has not seen yet', async () => {
+    const describeCall = vi.fn().mockResolvedValueOnce(described([view('theme', 1)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.load()
+    mirror.acceptView(view('fresh-ns', 0))
+    expect(mirror.namespace('fresh-ns')).toBeDefined()
+    expect(mirror.getSnapshot().view?.namespaces).toHaveLength(2)
+  })
+
+  it('never loses a load landing between a run settling and its slot clearing', async () => {
+    // Regression: with the in-flight slot cleared by a promise .finally(),
+    // a load() in the one-microtask gap after the rerun check marked a rerun
+    // nobody read, and that refresh never reached the wire.
+    const describeCall = vi.fn().mockResolvedValue(described([view('theme', 1)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    void mirror.load()
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(1) })
+    void mirror.load()
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(2) })
+    void mirror.load()
+    await vi.waitFor(() => { expect(describeCall).toHaveBeenCalledTimes(3) })
+  })
+
+  it('starts no second run for a load issued inside the loading publish', async () => {
+    const gate = deferred<RpcResponse<SettingsDescribeView>>()
+    const describeCall = vi.fn().mockReturnValue(gate.promise)
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    let reentered = false
+    const unsubscribe = mirror.subscribe(() => {
+      if (reentered) return
+      reentered = true
+      void mirror.load()
+    })
+    const loading = mirror.load()
+    await Promise.resolve()
+    expect(describeCall).toHaveBeenCalledTimes(1)
+    gate.resolve(described([view('theme', 1)]))
+    await loading
+    unsubscribe()
+    // The reentrant load folded into the first run rather than racing it.
+    expect(describeCall).toHaveBeenCalledTimes(1)
+    expect(mirror.getSnapshot().status).toBe('ready')
+  })
+
+  it('lets the first read cover a write folded inside the loading publish', async () => {
+    const describeCall = vi.fn().mockResolvedValue(described([view('theme', 2)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    const unsubscribe = mirror.subscribe(() => {
+      unsubscribe()
+      mirror.acceptView(view('theme', 2))
+    })
+
+    await mirror.load()
+
+    expect(describeCall).toHaveBeenCalledTimes(1)
+    expect(mirror.getSnapshot().status).toBe('ready')
+    expect(mirror.namespace('theme')?.revision).toBe(2)
+  })
+
+  it('re-reads after a folded write invalidates an in-flight document', async () => {
+    const slow = deferred<RpcResponse<SettingsDescribeView>>()
+    const describeCall = vi.fn()
+      .mockResolvedValueOnce(described([view('theme', 4), view('locale', 1)]))
+      .mockReturnValueOnce(slow.promise)
+      .mockResolvedValueOnce(described([view('theme', 5), view('locale', 2)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    await mirror.load()
+    expect(describeCall).toHaveBeenCalledTimes(1)
+    const stale = mirror.load()
+    await Promise.resolve()
+    mirror.acceptView(view('theme', 5))
+    slow.resolve(described([view('theme', 4), view('locale', 2)]))
+    await stale
+    expect(describeCall).toHaveBeenCalledTimes(3)
+    expect(mirror.namespace('theme')?.revision).toBe(5)
+    expect(mirror.namespace('locale')?.revision).toBe(2)
+  })
+
+  it('re-reads after a pre-answer write invalidates the in-flight document', async () => {
+    const slow = deferred<RpcResponse<SettingsDescribeView>>()
+    const describeCall = vi.fn()
+      .mockReturnValueOnce(slow.promise)
+      .mockResolvedValueOnce(described([view('theme', 2)]))
+    const mirror = new SettingsDescribeMirror({ settings: { describe: describeCall } } as never)
+    const loading = mirror.load()
+    await Promise.resolve()
+    mirror.acceptView(view('theme', 2))
+    slow.resolve(described([view('theme', 1)]))
+    await loading
+    expect(describeCall).toHaveBeenCalledTimes(2)
+    expect(mirror.namespace('theme')?.revision).toBe(2)
+  })
+})