Merge master into fix/conversation-column-one-axis-scroll

.agents/notes/implemented/bug-fix/2026-07-28-web-agent-runtime-context.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/2026-07-28-web-agent-runtime-context.md
-2026-07-28-web-agent-runtime-context.md: 449c9d4ba2b144d02dee4b98ae80c86815aec5c1
-2026-07-28-web-agent-runtime-context.zh.md: def1674be5f193739bfb214a24f34590ee075d5f
+2026-07-28-web-agent-runtime-context.md: 6c2bb8faf0db56d2a29b47726ab295c3501cce2d
+2026-07-28-web-agent-runtime-context.zh.md: 09cbbdeabc244c265381b1ad67c3629b4c0763f5

.agents/notes/implemented/bug-fix/2026-07-28-web-agent-runtime-context.md

@@ -10,13 +10,13 @@ The shared CLI base configured an empty deployment persona, the Web overlay did
 
 ## Decision
 
-The shared Web/headless overlay (`apps/cli/config/web.cordis.yml`) supplies a concise coding-agent persona containing the resolved `{{model}}` and session `{{cwd}}`. `dsh web` additionally resolves the harness checkout from the launcher's module URL, installs the existing `harness:source` section, and adds an `app:web-surface` section before serving requests. The launcher registers that setup before mounting the config tree; its `systemPrompt` injection therefore installs both sections before later prompt consumers such as the agent loop can activate and emit a request header. The [source-checkout/workdir decision](2026-07-30-source-checkout-workdir-distinction.md) owns the source section's wording and its warning not to infer one path from the other.
+The Web profile composes the `dsh-base` and `dsh-web-app` bundles. The Web bundle supplies a concise coding-agent persona containing the resolved `{{model}}` and session `{{cwd}}`; its `web-runtime` plugin adds the `app:web-surface` section when `surfaceContext` is true. Before mounting the profile tree, the `dsh web` alias reads that same composed setting and installs the existing `harness:source` section only when the surface context is enabled. The headless bundle and a profile that owns its complete prompt set `surfaceContext: false`, suppressing the Web prompt and managed shell facts; the Web alias also suppresses the source section without checking an overlay path. Every mounted prompt contribution still activates before consumers such as the agent loop can emit a request header. The [source-checkout/workdir decision](2026-07-30-source-checkout-workdir-distinction.md) owns the source section's wording and its warning not to infer one path from the other.
 
 The Web section treats unqualified references to “this page,” “this GUI,” or “this app” as references to the DeepSeek Harness Web GUI. It also states that the browser provides no implicit DOM, route, or screenshot context, so the model can identify the product without claiming visual state it did not receive. The assembled text is logged in `request/header`, preserving the model-visible/logged invariant.
 
 ## Verification
 
-The focused startup-order test registers a later `systemPrompt` consumer and proves that it observes both launcher sections on its first activation. The keyless fresh-round-trip Web scenario boots the shipped base plus Web overlay, registers the same launcher context as `dsh web`, runs a real session through the HTTP/SSE application, and snapshots the first four system-prompt sections with source and working-directory paths normalized. The snapshot pins the harness identity, source checkout, Web orientation, and resolved coding-agent persona in request order.
+The Web runtime unit tests pin both enabled and disabled `surfaceContext` behavior, while the Web alias unit test pins default-on and explicit-off source-section gating from the composed row. The keyless fresh-round-trip Web scenario boots the shipped base plus Web bundle, runs a real session through the HTTP/SSE application, and snapshots the system-prompt prefix with source and working-directory paths normalized. The snapshot pins the harness identity, source checkout, Web orientation, and resolved coding-agent persona in request order. The Core Web snapshot applies the RL overlay and pins its complete system prompt with no source or Web section.
 
 ## Alternatives considered
 
@@ -30,4 +30,4 @@ The focused startup-order test registers a later `systemPrompt` consumer and pro
 
 ## Consequences
 
-Web requests gain a short stable prompt prefix and may invalidate provider prefix caches once when this change is deployed. Agents can distinguish the GUI source checkout from the selected Workspace and resolve ordinary references to the current app without a clarification round trip. References to a specific visual state remain bounded by the explicit no-DOM/no-route/no-screenshot statement and may still require a path, description, or attachment.
+Ordinary Web requests gain a short stable prompt prefix and may invalidate provider prefix caches once when this change is deployed. Agents can distinguish the GUI source checkout from the selected Workspace and resolve ordinary references to the current app without a clarification round trip. References to a specific visual state remain bounded by the explicit no-DOM/no-route/no-screenshot statement and may still require a path, description, or attachment. Complete-prompt profiles can opt out through the Web runtime's composition setting without a launcher path check.

.agents/notes/implemented/bug-fix/2026-07-28-web-agent-runtime-context.zh.md

@@ -10,13 +10,13 @@ CLI 共享 base 配置了空的部署 persona，Web overlay 没有替换它，
 
 ## 决策
 
-`apps/cli/config/web.cordis.yml` 这份 Web／无头共享 overlay 提供一段简洁的编码 agent persona，其中包含解析后的 `{{model}}` 与会话 `{{cwd}}`。`dsh web` 还会根据启动器模块的 URL 解析 harness checkout，安装现有的 `harness:source` 提示词段，并在对外提供请求服务前添加 `app:web-surface` 提示词段。启动器会在挂载配置树前注册这项设置；因此，它的 `systemPrompt` 注入会在 agent loop（智能体循环）等后续提示词消费方激活并发出 request header 之前安装这两个提示词段。源码提示词段的措辞，以及其中不得从一条路径推断另一条路径的警告，均由另行记录的[源码 checkout 与工作目录区分决策](2026-07-30-source-checkout-workdir-distinction.md)负责。
+Web profile 会组合 `dsh-base` 与 `dsh-web-app` 两个组合包。Web 组合包提供一段简洁的编码 agent persona，其中包含解析后的 `{{model}}` 与会话 `{{cwd}}`；当 `surfaceContext` 为 true 时，其 `web-runtime` 插件会添加 `app:web-surface` 提示词段。挂载 profile 配置树前，`dsh web` 别名会读取组合后的同一项设置，并且仅在启用表层上下文时安装现有的 `harness:source` 提示词段。无头组合包和拥有完整提示词的 profile 都会设置 `surfaceContext: false`，从而抑制 Web 提示词与受管 shell 事实；Web 别名也会抑制源码提示词段，而无需检查 overlay 路径。每项已挂载的提示词贡献仍会在 agent loop（智能体循环）等消费方发出 request header 前激活。源码提示词段的措辞，以及其中不得从一条路径推断另一条路径的警告，均由另行记录的[源码 checkout 与工作目录区分决策](2026-07-30-source-checkout-workdir-distinction.md)负责。
 
 Web 提示词段把未限定的「这个页面」「这个 GUI」或「这个应用」解释为 DeepSeek Harness Web GUI。同时，它会明确说明浏览器不会隐式提供 DOM、路由或截图上下文，使模型能够识别产品，但不会声称掌握未收到的视觉状态。组装后的文本会记录在 `request/header` 中，从而保持「模型可见内容必须有日志记录」这一不变量。
 
 ## 验证
 
-聚焦启动顺序的测试会注册一个后续的 `systemPrompt` 消费方，并证明该消费方首次激活时就能观察到启动器的两个提示词段。无密钥的 Web fresh-round-trip 场景会启动已交付的 base 与 Web overlay，注册与 `dsh web` 相同的启动器上下文，并通过 HTTP／SSE 应用运行一个真实会话。测试会把源码路径和工作目录规范化，然后对系统提示词的前四个段落生成快照。该快照按请求顺序固定 harness 身份、源码 checkout、Web 界面定位，以及解析后的编码 agent persona。
+Web 运行时单元测试会固定启用和禁用 `surfaceContext` 时的行为，Web 别名单元测试则会固定组合后配置行对源码提示词段的默认启用与显式禁用门控。无密钥的 Web fresh-round-trip 场景会启动已交付的 base 与 Web 组合包，通过 HTTP／SSE 应用运行一个真实会话，并在规范化源码路径与工作目录后对系统提示词前缀生成快照。该快照按请求顺序固定 harness 身份、源码 checkout、Web 界面定位，以及解析后的编码 agent persona。Core Web 快照会应用 RL overlay，并固定不含源码提示词段或 Web 提示词段的完整系统提示词。
 
 ## 考虑过的替代方案
 
@@ -30,4 +30,4 @@ Web 提示词段把未限定的「这个页面」「这个 GUI」或「这个应
 
 ## 影响
 
-Web 请求会增加一段较短且稳定的提示词前缀；部署此变更时，模型提供方的前缀缓存可能失效一次。agent 可以区分 GUI 源码 checkout 与所选 Workspace，并且无需再经过一轮澄清即可解析对当前应用的一般指代。对特定视觉状态的指代仍受「无 DOM／无路由／无截图」这一显式边界约束，必要时仍需用户提供路径、描述或附件。
+常规 Web 请求会增加一段较短且稳定的提示词前缀；部署此变更时，模型提供方的前缀缓存可能失效一次。agent 可以区分 GUI 源码 checkout 与所选 Workspace，并且无需再经过一轮澄清即可解析对当前应用的一般指代。对特定视觉状态的指代仍受「无 DOM／无路由／无截图」这一显式边界约束，必要时仍需用户提供路径、描述或附件。拥有完整提示词的 profile 可以通过 Web 运行时的组合设置选择退出，而无需检查启动器路径。

.agents/notes/implemented/bug-fix/2026-07-28-web-gui-feedback-loop.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/2026-07-28-web-gui-feedback-loop.md
-2026-07-28-web-gui-feedback-loop.md: 039d2aebeeef903d10838a46b48e5172f0195126
-2026-07-28-web-gui-feedback-loop.zh.md: 34b6b26d4ce7c7e194e641536fffc503c013188b
+2026-07-28-web-gui-feedback-loop.md: aa488e1df087722c072d98c67d47cdf63a42f6b8
+2026-07-28-web-gui-feedback-loop.zh.md: d9de988e5a2cc57794ff628b65eb050dee610747

.agents/notes/implemented/bug-fix/2026-07-28-web-gui-feedback-loop.md

@@ -12,7 +12,7 @@ The [incident post-mortem](../../../../docs/postmortem/0003-web-agent-gui-feedba
 
 ## Decision
 
-`dsh web` publishes one canonical loopback URL and its actual runtime mode as both model-visible orientation and managed shell facts. The `app:web-surface` prompt section says that unqualified references identify this GUI and names the URL; `DSH_WEB_URL` and `DSH_WEB_MODE=production|development` carry the same facts into every foreground or managed background bash call. The section preserves the no-implicit-DOM, route, or screenshot boundary and does not claim that a LAN alias equals the browser's literal address.
+The ordinary `dsh web` composition mounts the Web bundle's `web-runtime` plugin, which publishes one canonical loopback URL and its actual runtime mode as both model-visible orientation and managed shell facts. The `app:web-surface` prompt section says that unqualified references identify this GUI and names the URL; `DSH_WEB_URL` and `DSH_WEB_MODE=production|development` carry the same facts into every foreground or managed background bash call. The section preserves the no-implicit-DOM, route, or screenshot boundary and does not claim that a LAN alias equals the browser's literal address. A complete-prompt profile sets the row's `surfaceContext` to false and receives neither the prompt section nor the managed variables; the Web launcher uses the same setting to suppress its source-checkout prompt section.
 
 The mode-specific prompt makes the agent, rather than the user, own the hidden startup contract. Production mode defines acceptance as rebuilding the affected artifacts and refreshing the existing URL. Development mode states that `dsh web --dev` activates only the HMR receiver: automatic client-plugin reload additionally requires a same-checkout `pnpm run dev:web` watcher, which the agent verifies before promising no-refresh updates. Shell and other plain-package changes still require rebuild plus refresh. An agent in production mode explains both commands when a user requests no-refresh updates; it does not launch a replacement GUI unless asked.
 
@@ -36,4 +36,4 @@ The keyless fresh-round-trip browser scenario boots the shipped production Web c
 
 ## Consequences
 
-Web prompts gain a dynamic URL-and-mode paragraph, so provider prefix reuse now varies by bound port and mode. Bash processes gain two non-secret managed environment variables. Bare Vite can no longer be used as a shell-only visual sandbox; developers use the full host or build mode instead. In exchange, GUI work has one mechanically observable target, the agent can teach the user the exact update behavior of the process actually serving their session, and the unsupported startup path fails before a white screen. The URL/mode contract guides the agent away from replacement ports; it does not prohibit arbitrary shell commands from starting one.
+Ordinary Web prompts gain a dynamic URL-and-mode paragraph, so provider prefix reuse now varies by bound port and mode. Their Bash processes gain two non-secret managed environment variables. Bare Vite can no longer be used as a shell-only visual sandbox; developers use the full host or build mode instead. In exchange, GUI work has one mechanically observable target, the agent can teach the user the exact update behavior of the process actually serving their session, and the unsupported startup path fails before a white screen. The URL/mode contract guides the agent away from replacement ports; it does not prohibit arbitrary shell commands from starting one. Profiles that disable `surfaceContext` also give up this feedback-loop guidance and shell context.

.agents/notes/implemented/bug-fix/2026-07-28-web-gui-feedback-loop.zh.md

@@ -12,7 +12,7 @@ Web agent（智能体）既无法识别承载当前会话的 GUI，也不知道
 
 ## 决策
 
-`dsh web` 发布一个规范的回环 URL 及其实际运行时模式，同时将二者作为模型可见的界面定位信息和受管 shell 事实。`app:web-surface` 提示词段说明：未加限定的指代指向此 GUI，并给出 URL；`DSH_WEB_URL` 和 `DSH_WEB_MODE=production|development` 会把同样的事实传入每次前台或受管后台 bash 调用。该段保留「不会隐式获得 DOM、路由或截图」这一边界，也不声称局域网别名等于浏览器中的实际地址。
+常规 `dsh web` 组合会挂载 Web 组合包的 `web-runtime` 插件，由它发布一个规范的回环 URL 及其实际运行时模式，同时将二者作为模型可见的界面定位信息和受管 shell 事实。`app:web-surface` 提示词段说明：未加限定的指代指向此 GUI，并给出 URL；`DSH_WEB_URL` 和 `DSH_WEB_MODE=production|development` 会把同样的事实传入每次前台或受管后台 bash 调用。该段保留「不会隐式获得 DOM、路由或截图」这一边界，也不声称局域网别名等于浏览器中的实际地址。拥有完整提示词的 profile 会把该配置行的 `surfaceContext` 设为 false，并且不会收到该提示词段和这些受管变量中的任何一个；Web 启动器也会使用同一项设置来抑制其源码 checkout 提示词段。
 
 按模式区分的提示词让 agent 而非用户负责隐藏的启动契约。生产模式将验收定义为重新构建受影响的产物并刷新现有 URL。开发模式说明，`dsh web --dev` 只会启用 HMR（热模块替换）接收端：客户端插件要自动重新加载，还需要在同一检出中运行 `pnpm run dev:web` 监听进程，agent 会在承诺无需刷新即可更新前验证这一点。外壳和其他普通包的变更仍然需要重新构建并刷新。生产模式下的 agent 会在用户要求无需刷新即可更新时说明这两个命令；除非用户要求，否则不会启动替代 GUI。
 
@@ -36,4 +36,4 @@ Web agent（智能体）既无法识别承载当前会话的 GUI，也不知道
 
 ## 影响
 
-Web 提示词会增加一个动态 URL 和模式段落，因此模型提供方的前缀复用会随绑定端口和模式变化。Bash 进程会增加两个非敏感的受管环境变量。裸 Vite 不再能用作只依赖 shell 的视觉沙箱；开发者应改用完整宿主或构建模式。作为交换，GUI 工作有了一个可由机制观察的唯一目标，agent 可以向用户说明实际承载其会话的进程究竟如何更新，不受支持的启动路径也会在出现白屏前失败。URL／模式契约会引导 agent 避免使用替代端口，但不会禁止任意 shell 命令启动替代服务。
+常规 Web 提示词会增加一个动态 URL 和模式段落，因此模型提供方的前缀复用会随绑定端口和模式变化。相应的 Bash 进程会增加两个非敏感的受管环境变量。裸 Vite 不再能用作只依赖 shell 的视觉沙箱；开发者应改用完整宿主或构建模式。作为交换，GUI 工作有了一个可由机制观察的唯一目标，agent 可以向用户说明实际承载其会话的进程究竟如何更新，不受支持的启动路径也会在出现白屏前失败。URL／模式契约会引导 agent 避免使用替代端口，但不会禁止任意 shell 命令启动替代服务。禁用 `surfaceContext` 的 profile 也会放弃这项反馈闭环指引与 shell 上下文。

.agents/notes/implemented/bug-fix/2026-08-06-onboarding-step-owned-takeover-chrome.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-06-onboarding-step-owned-takeover-chrome.md
+2026-08-06-onboarding-step-owned-takeover-chrome.md: 4b3bbbc03c4494359297ae6e54bcc9a74c387e80
+2026-08-06-onboarding-step-owned-takeover-chrome.zh.md: 548285d285939325a26df3b8d70c43fe952813a9

.agents/notes/implemented/bug-fix/2026-08-06-onboarding-step-owned-takeover-chrome.md

@@ -0,0 +1,35 @@
+# Agent Note: onboarding takeover chrome moves into the step
+
+Status: implemented
+
+English | [中文](2026-08-06-onboarding-step-owned-takeover-chrome.zh.md)
+
+## Problem
+
+The settings shell mounted the onboarding takeover chrome — a body-portaled overlay with an opaque `--dsw-alias-bg-layer-1` stage, a blur mask, and `#root` set inert — the moment a `settings.onboarding` step was registered and not yet locally completed. Every step decides whether it actually needs to show by loading a private fact first (WelcomeNotice: the acknowledgement bit through its settings join; DeepSeekOnboardingDialog: credential readiness through the Models join) and renders `null` while that fact is in flight. Rendering `null` could not suppress the chrome, because the opaque stage was painted by the shell around the slot outlet, not by the step.
+
+On every reload while the hero (blank or no session) was current, the sessions list turning `ready` therefore popped a full-screen opaque layer — white in the light palette — and blocked all interaction for exactly one credential/settings RPC round-trip, after which the already-configured steps self-completed and the layer vanished. Users saw the app flash white each refresh the moment the workspace/session lists landed.
+
+## Decision
+
+The takeover chrome belongs to the step, not the shell. A new zero-cordis primitive, `OnboardingSurface` (ui-primitives), renders the body-portaled overlay/mask/stage — CSS class names and geometry moved verbatim from `SettingsRoot.module.css` — and holds `#root` inert for exactly its own mount lifetime. Both step components wrap only their **visible** branch in it; their existing `null` branches now paint and block nothing by construction, because the chrome is part of the same render decision.
+
+`SettingsRoot` keeps the coordinator exactly as it was (ordered ledger projection, one mounted step, local completed set, `stepId`/`complete`/`openSection` currency) but renders the elected step bare — no portal, no stage, no inert effect. The `settings.onboarding` slot contract now states that registrants own the surface wrap and must render `null` while their private facts are undecided.
+
+## Alternatives considered
+
+**Register steps conditionally (ledger as the has-content signal).** Register the entry only after the private join resolves to "needs intervention". Architecturally clean (publish at the commit point) but a larger change: the join load must move from the dialogs into each plugin's apply, and registration/disposal becomes reactive plumbing in two packages. Rejected as oversized for the defect.
+
+**Convert `settings.onboarding` to a chain with an externalized completed-set store.** The composer-takeover pattern; prototyped and reverted. Selectors can only judge owner props, so the private readiness facts still had to be resolved inside the components — the chain bought routing generality the two current steps do not need, at the cost of a contract change across three packages.
+
+**Detect empty slot output at the render site.** `renderSlot` returns an outlet element unconditionally, so the owner cannot branch on a step's `null`; probing rendered DOM emptiness needs a commit-then-retract dance whose dynamic transitions lose the pre-paint guarantee.
+
+## Consequences
+
+While a step is mounted but undecided, the application stays visible and interactive: `#root` is no longer inert during the decision window (previously it was inert behind an opaque layer). For a genuinely unconfigured user the takeover now appears one join round-trip later than before — but with its content already present, instead of an empty stage that fills in.
+
+A future step that registers without wrapping its visible content in `OnboardingSurface` renders bare over the app with no mask; the slot contract JSDoc names the wrap as the registrant's obligation.
+
+## Testing
+
+`packages/client/ui-primitives/tests/onboarding-surface.spec.tsx` pins the primitive: body portal around the content, mask/stage class presence, `#root` inert held for exactly the mount lifetime, and the no-`#root` composition. `packages/client/ui-settings/tests/settings-root.spec.tsx` pins the inverted shell contract: no takeover chrome and no inert while a mounted step renders nothing. `apps/web/tests/onboarding-deepseek-config.e2e.ts` gains the defect's assembled regression pin: a configured world reloads while every `settings.describe` response is held open at the browser's network boundary — widening the steps' deciding window from loopback-invisible to hundreds of milliseconds, which is what keeps the assertions non-vacuous — and an 8 ms in-page sampler proves the takeover chrome never mounts and `#root` never turns inert. The file's existing scenarios and the step specs (`ui-settings-general`, `ui-models`) pass unchanged — the mask selector and geometry pins survive because the stylesheet moved verbatim.

.agents/notes/implemented/bug-fix/2026-08-06-onboarding-step-owned-takeover-chrome.zh.md

@@ -0,0 +1,35 @@
+# Agent Note：首次使用引导的接管界面框架移入步骤自身
+
+状态：已实现
+
+[English](2026-08-06-onboarding-step-owned-takeover-chrome.md) | 中文
+
+## 问题
+
+设置外壳在 `settings.onboarding` 有已注册且本地未完成的步骤时，就立即挂出首次使用引导的接管界面框架——portal 到 body 的浮层，带不透明的 `--dsw-alias-bg-layer-1` 展示层、模糊遮罩，并把 `#root` 置为 `inert`。而每个步骤都要先加载私有事实才能判定自己是否需要出场（WelcomeNotice：经其设置 join 读取确认位；DeepSeekOnboardingDialog：经 Models join 读取凭据就绪状态），判定期间渲染 `null`。渲染 `null` 无法抑制界面框架，因为不透明展示层是外壳画在 slot outlet 外面的，不属于步骤。
+
+于是每次在 hero（空白或无会话）状态下刷新页面，会话列表一变 `ready` 就弹出整屏不透明层——亮色主题下是白色——并阻断全部交互，时长恰好等于一次凭据/设置 RPC 往返；之后已配置好的步骤自我完成，图层消失。用户看到的就是每次刷新在 workspace/会话列表落地的瞬间闪一下白屏。
+
+## 决定
+
+接管界面框架属于步骤，不属于外壳。新增零 cordis 原语 `OnboardingSurface`（ui-primitives）：渲染 portal 到 body 的浮层／遮罩／展示层——CSS 类名与几何从 `SettingsRoot.module.css` 逐字迁移——并在自身挂载生命周期内保持 `#root` 为 `inert`。两个步骤组件只把各自的**可见**分支包进该原语；既有的 `null` 分支由此在构造上不绘制、不阻塞任何内容，因为界面框架已是同一次渲染决策的一部分。
+
+`SettingsRoot` 的协调器原样保留（有序账本投影、每次挂载一个步骤、本地完成集合、`stepId`／`complete`／`openSection` currency），但对当选步骤裸渲染——不再有 portal、展示层和 inert 效果。`settings.onboarding` 的 slot 契约现在写明：注册方持有外层包裹，且在私有事实未决时必须渲染 `null`。
+
+## 曾考虑的替代方案
+
+**条件注册（账本即有内容信号）。** 私有 join 解析出「需要介入」后才注册条目。架构上干净（在 commit point 发布），但改动更大：join 的加载必须从对话框上移到各插件的 apply，注册／销毁在两个包里都变成响应式接线。对本缺陷而言过重，否决。
+
+**把 `settings.onboarding` 改成 chain 并把完成集合外置为 store。** composer takeover 的版型；做过原型后回退。selector 只能判定 owner props，私有就绪事实仍然只能在组件内部解析——chain 买来的是当前两个步骤并不需要的路由通用性，代价却是跨三个包的契约变更。
+
+**在渲染点探测 slot 输出为空。** `renderSlot` 无条件返回 outlet 元素，owner 无法据步骤的 `null` 分支；探测已渲染 DOM 是否为空需要先提交再撤回的手法，其动态翻转会失去 paint 前的保证。
+
+## 后果
+
+步骤已挂载但尚未判定期间，应用保持可见且可交互：判定窗口内 `#root` 不再是 `inert`（此前是在不透明图层背后被置灰）。对真正未配置的用户，接管层比从前晚一个 join 往返出现——但一出现就带着内容，而不是先露出空白展示层再填充。
+
+未来若有步骤注册后不把可见内容包进 `OnboardingSurface`，会无遮罩地裸渲染在应用之上；slot 契约的 JSDoc 已把包裹写为注册方的义务。
+
+## 测试
+
+`packages/client/ui-primitives/tests/onboarding-surface.spec.tsx` 钉住原语行为：内容外的 body portal、遮罩／展示层类名存在、`#root` 的 `inert` 恰好持续挂载生命周期，以及无 `#root` 的组合。`packages/client/ui-settings/tests/settings-root.spec.tsx` 钉住反转后的外壳契约：已挂载步骤什么都不渲染时，无接管界面框架、无 inert。`apps/web/tests/onboarding-deepseek-config.e2e.ts` 新增本缺陷的整装回归钉：已配置世界刷新页面，同时在浏览器网络边界扣住所有 `settings.describe` 响应——把步骤的判定窗口从 loopback 下不可见拉宽到数百毫秒，这正是断言保持非空洞的关键——页内 8ms 采样器证明接管界面框架从未挂载、`#root` 从未变为 inert。该文件的既有场景与步骤 spec（`ui-settings-general`、`ui-models`）原样通过——样式表逐字迁移，遮罩选择器与几何钉子得以幸存。