Merge remote-tracking branch 'origin/master' into feat/telemetry-otel-plugin

.agents/notes/implemented/bug-fix/2026-07-27-question-composer-rows-do-not-shrink.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/2026-07-27-question-composer-rows-do-not-shrink.md
+2026-07-27-question-composer-rows-do-not-shrink.md: 2e0e9b9ca6b141a200ba53d8b6f6f0cad5f7e89d
+2026-07-27-question-composer-rows-do-not-shrink.zh.md: 845d9ee883ad1c2c7abc63a01fce626be924b87f

.agents/notes/implemented/bug-fix/2026-07-27-question-composer-rows-do-not-shrink.md

@@ -0,0 +1,50 @@
+# Agent Note: Question-composer option rows are scroll content, not the slack absorber
+
+Status: implemented
+
+English | [中文](2026-07-27-question-composer-rows-do-not-shrink.zh.md)
+
+## Problem
+
+The question composer card is capped against the viewport (`max-height: min(60vh, 520px)`) and scrolls its option list, so the header and the footer actions stay reachable on long question batches. When the composer seat got short — a small window, or a short viewport with the details panel open — the option rows rendered on top of each other and on top of the question title.
+
+The cap was not the defect; the distribution of the shortfall was. `.options` is a `flex-direction: column` box whose children default to `flex-shrink: 1`, so under-allocation shrank the rows first instead of overflowing the scroll container. A row shrank to its `min-height: 42px` while `.optionCopy` kept the taller intrinsic height its wrapped copy needs (two lines for an option with a description). With `align-items: center`, the copy is then centered on a box shorter than itself and paints outside the row's border box in both directions — over the title above and the next row below. Measured on the shipped client at 900x440: 6.5px of copy outside the row box, growing to 10px at 380px tall, while `.options` reported `scrollHeight === clientHeight` and therefore never offered a scrollbar.
+
+Only rows whose copy wraps can reproduce it. A row whose copy fits on one line has slack between its content and its 42px minimum, so shrinking it stays invisible — which is why the pre-existing e2e fixture (options `Blue`/`Green`, no descriptions) rendered correctly at every size.
+
+## Decision
+
+`.option` and `.custom` declare `flex-shrink: 0`.
+
+The rows are the scroll content of a capped card; the card's overflow belongs to `.options`, which already owns `overflow-y: auto` and `min-height: 0`. Pinning the children makes the shortfall reach that scroll container instead of being absorbed by the rows, which is the behavior the cap was designed for. The alternative — letting rows shrink but keeping the copy inside them — would require clipping or ellipsizing option descriptions at exactly the sizes where the user most needs to read them.
+
+`.header` and `.footer` already carried `flex-shrink: 0` for the same reason at the card level; the option list's children were the missing half of that rule.
+
+## Alternatives considered
+
+**Clip or ellipsize the copy inside a shrunk row (`overflow: hidden` on `.option`).** This removes the overlap with one declaration and no layout rethink. Rejected because it trades a visible defect for a silent one: the row keeps its 42px, and the second line of an option description simply disappears at exactly the sizes where the card is tightest. The description is decision-relevant content, not decoration.
+
+**Drop `align-items: center` for `align-items: flex-start`.** The copy would grow downward only, so it would no longer paint over the title above. It does not fix anything: a shrunk row still overflows onto the row below, and the fix would silently change the vertical alignment of every option row at every size, including the common one.
+
+**Remove the card's `max-height` cap so nothing is ever squeezed.** No shortfall means no distribution problem. Rejected because the cap is what keeps the header and the footer actions on screen for a long question batch; removing it reintroduces the failure the cap exists to prevent (the composer seat is a fixed-height conversation column with `overflow: hidden`, so an uncapped card loses its own submit button instead).
+
+**Cap the wrapped copy at one line (`white-space: nowrap` plus ellipsis on `.description`).** Rows would never wrap, so they could never overflow when shrunk. Rejected for the same reason as clipping, plus it degrades the wide-viewport rendering — where there is ample room — to fix a narrow-viewport defect.
+
+## Consequences
+
+- A squeezed composer scrolls its option list instead of overlapping it: at 900x380 the list reports `scrollHeight` 200 against `clientHeight` 114 and offers a scrollbar, where before it reported them equal and offered none.
+- Option rows keep their full wrapped copy at every viewport size. Nothing is clipped or ellipsized, and the wide-viewport rendering is unchanged (the rule only takes effect when the flex box is under-allocated).
+- The card now reaches its scroll state sooner, since the shortfall is no longer partly absorbed by the rows. That is the intended behavior of the cap, and it means a short seat shows a scrollbar in cases that previously showed a silently mis-painted list.
+- The scenario's recorded question is longer than it needs to be for the round trip it primarily tests. That cost is deliberate: the layout invariant is unfalsifiable without wrapping copy, and a second fixture for one CSS rule would be worse.
+
+## Verification
+
+The web e2e composer scenario asserts the invariant on the live composer at three squeezed seat heights (900x520 / 440 / 380): every option row's children stay inside the row's border box. Two guards keep the assertion from holding vacuously — at least one row must be wrapped (the only shape that overflows) and `.options` must actually be scrolling (proof the seat is genuinely capped). The scenario's recorded question now carries long option descriptions for exactly that reason; without wrapping copy the assertion cannot fail.
+
+Confirmed both directions against the built client: with `flex-shrink: 0` reverted the scenario fails (`scrolls: false`, 6.5px spill), and with it restored it passes. A standalone geometry sweep over 340 viewport sizes (420-1600 x 320-960) went from 86 sizes with copy outside a row box to zero.
+
+The assertion is replay-only: record mode must reach the fixture write rather than aborting on layout. Note that the composer ships as a client-module bundle, so `pnpm run build:web` alone does not pick up a change to `QuestionComposer.module.css` — the package build must run for the browser lane to see it.
+
+Reproducing the shortfall requires a short viewport, not a short container. The cap is `min(60vh, 520px)`, so shrinking the conversation column below the card's own height clips the card without under-allocating it — the rows keep their full height and nothing spills. Anything demonstrating or measuring this defect outside the e2e scenario has to change the viewport.
+
+A stale `lib/` makes the browser lane assert against an older client than the tree, and a `pnpm run build` that fails part-way leaves exactly that: the packages built before the failure are current, the rest are not. Refreshing a golden in that state records the older client's surface. Confirm the build exited zero before capturing, and note that untracked directories under `packages/` are compiled too — a leftover from another branch can fail the build for reasons the diff does not explain.

.agents/notes/implemented/bug-fix/2026-07-27-question-composer-rows-do-not-shrink.zh.md

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+# Agent Note: 提问 composer 的选项行是滚动内容，而非空间不足时的吸收方
+
+Status: implemented
+
+[English](2026-07-27-question-composer-rows-do-not-shrink.md) | 中文
+
+## 问题
+
+提问 composer 的卡片会按视口设上限（`max-height: min(60vh, 520px)`），并让选项列表自行滚动，这样在成批提问时标题和底部操作按钮始终可达。但当 composer 的容器变矮时（窗口较小，或视口偏矮且详情面板处于展开状态），选项行会互相叠在一起，也会叠到问题标题上。
+
+缺陷不在这个高度上限，而在高度不足时由谁来吸收。`.options` 是一个 `flex-direction: column` 的盒子，其子元素默认取 `flex-shrink: 1`，因此空间不足时首先被压缩的是各个选项行，而不是让滚动容器产生溢出。一行会被压到它的 `min-height: 42px`，而 `.optionCopy` 仍保持文案折行后所需的更大固有高度（带描述的选项会占两行）。由于 `align-items: center`，文案于是以一个比自身更矮的盒子为基准居中，并向上下两个方向画到该行边框盒之外——向上盖住标题，向下盖住下一行。在实际发布的客户端上于 900x440 处实测：文案有 6.5px 落在行盒之外，视口高度降到 380px 时增至 10px，而 `.options` 报告的 `scrollHeight` 等于 `clientHeight`，因此始终不会给出滚动条。
+
+只有文案会折行的选项行才能复现该问题。文案单行即可容纳的行，其内容与 42px 最小高度之间尚有余量，被压缩也看不出来——这正是既有 e2e fixture（测试前置数据）（选项为 `Blue`／`Green`，无描述）在任何尺寸下都渲染正常的原因。
+
+## 决策
+
+`.option` 与 `.custom` 声明 `flex-shrink: 0`。
+
+在设有高度上限的卡片中，这些行是滚动内容；卡片的溢出归 `.options` 承担，它本就持有 `overflow-y: auto` 与 `min-height: 0`。把子元素固定住之后，高度不足会传导到那个滚动容器，而不再被行本身吸收，这正是该高度上限设计时想要的行为。另一种做法是允许行被压缩，但把文案约束在行内，那就必须在用户最需要阅读选项描述的尺寸上对其做裁剪或省略号处理。
+
+`.header` 与 `.footer` 出于同样的原因，已在卡片层级带有 `flex-shrink: 0`；选项列表的子元素正是这条规则缺失的另一半。
+
+## 曾考虑的替代方案
+
+**在被压缩的行内裁剪文案或加省略号（对 `.option` 设 `overflow: hidden`）。** 这样一条声明就能消除重叠，且不必重新考虑布局。之所以否决：它把一个可见缺陷换成了一个无声缺陷——行仍保持 42px，而选项描述的第二行会在卡片最紧张的那些尺寸上直接消失。描述属于影响决策的内容，不是装饰。
+
+**把 `align-items: center` 改为 `align-items: flex-start`。** 文案就只会向下生长，因此不再向上盖住标题。但这什么也没修好：被压缩的行依然会溢出到下一行上，而且这一改动会在所有尺寸下（包括常见尺寸）无声改变每个选项行的垂直对齐。
+
+**移除卡片的 `max-height` 上限，使其永远不会被压缩。** 没有高度不足，就没有分配问题。之所以否决：正是这个上限保证成批提问时标题和底部操作按钮留在屏幕内；移除它会重新引入该上限本就为之存在的失败（composer 所处的容器是一个固定高度、`overflow: hidden` 的会话列，因此不设上限的卡片会连自己的提交按钮一起丢掉）。
+
+**把折行文案限制为单行（对 `.description` 设 `white-space: nowrap` 加省略号）。** 行永远不会折行，因此被压缩时也永远不会溢出。否决理由与裁剪相同，此外它还为了修一个窄视口缺陷，而牺牲了空间充裕的宽视口渲染效果。
+
+## 后果
+
+- 被压缩的 composer 会滚动其选项列表，而不是让它互相重叠：在 900x380 处，该列表报告 `scrollHeight` 为 200、`clientHeight` 为 114，并给出滚动条；此前两者相等，不给滚动条。
+- 选项行在任何视口尺寸下都保留完整的折行文案。不裁剪、不加省略号，宽视口下的渲染保持不变（该规则仅在 flex 盒子空间不足时才生效）。
+- 由于高度不足不再被行部分吸收，卡片现在更早进入滚动状态。这正是该高度上限想要的行为，也意味着在此前只会无声画错列表的情形下，矮容器现在会显示滚动条。
+- 该场景录制的问题，比它主要测试的那次往返所需的长度更长。这个代价是有意付出的：没有折行文案，该布局不变式无法被证伪，而为一条 CSS 规则再加一份 fixture 会更糟。
+
+## 验证
+
+Web e2e 的 composer 场景会在三个被压缩的容器高度（900x520／440／380）上，对活动的 composer 断言该运行时不变式：每个选项行的子元素都留在该行的边框盒之内。两道守卫防止该断言空洞地成立——必须至少有一行处于折行状态（这是唯一会溢出的形态），且 `.options` 必须确实处在滚动状态（证明容器确实触及了高度上限）。该场景录制的问题现在带有较长的选项描述，正是为此；没有折行文案，这条断言不可能失败。
+
+在构建产物客户端上双向确认过：撤销 `flex-shrink: 0` 后该场景失败（`scrolls: false`，6.5px 溢出），恢复后通过。一次覆盖 340 种视口尺寸（420-1600 x 320-960）的独立几何遍历，从 86 种尺寸存在文案落在行盒之外，降到 0 种。
+
+该断言仅在回放模式下执行：录制模式必须走到写入 fixture 那一步，而不是在布局检查处中断。另需注意，composer 以客户端模组包的形式发布，因此单跑 `pnpm run build:web` 不会带上对 `QuestionComposer.module.css` 的改动——必须执行包构建，浏览器测试通道才能看到它。
+
+要复现这种空间不足，需要的是矮视口，而不是矮容器。高度上限为 `min(60vh, 520px)`，因此把会话列压到比卡片自身高度更矮，只会裁剪卡片，而不会让它空间不足——各行仍保持完整高度，也不会有任何溢出。凡是在 e2e 场景之外演示或测量该缺陷的手段，都必须改变视口。
+
+`lib/` 陈旧会让浏览器测试通道对着一个比工作树更旧的客户端做断言，而中途失败的 `pnpm run build` 留下的正是这种状态：失败之前构建的那些包是新的，其余不是。在这种状态下刷新 golden，记录下来的是旧客户端的界面。抓取之前先确认构建以 0 退出；另需注意 `packages/` 下的未跟踪目录同样会被编译——来自另一个分支的遗留物可能以 diff 无法解释的原因让构建失败。

.agents/notes/implemented/feature/2026-07-27-native-workspace-directory-picker.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-27-native-workspace-directory-picker.md
+2026-07-27-native-workspace-directory-picker.md: 847b7a7c7844a47e534183008acfdc32e2e08125
+2026-07-27-native-workspace-directory-picker.zh.md: e484a2ba5860d43925aba82be31c803716a33bc5

.agents/notes/implemented/feature/2026-07-27-native-workspace-directory-picker.md

@@ -0,0 +1,51 @@
+# Agent Note: Native workspace directory picker
+
+Status: implemented
+
+English | [中文](2026-07-27-native-workspace-directory-picker.zh.md)
+
+## Problem
+
+The desktop GUI asks users to type an absolute path when they add an existing workspace. This is slower and more error-prone than choosing a directory with the operating system's native picker. The GUI is delivered through the local Web carrier, so opening a native dialog also creates a privileged boundary that ordinary remote requests must not cross.
+
+## Decision
+
+Add a single-folder `host.pickDirectory` RPC and expose it through `WorkspacesService`. The workspace menu presents two flat actions: **Open local folder...** and **Create a new workspace**. Selecting a folder reuses the existing `workspace.create({ path })` flow, selects the returned workspace, and starts a blank session.
+
+The workspace manager must upsert the returned workspace before the selection callback runs. A newly adopted directory therefore renders its basename immediately. Reopening an already registered path preserves its existing workspace title.
+
+## Interaction contract
+
+- The picker accepts one directory on macOS, Windows, and Linux.
+- Cancelling the system dialog is silent and returns `null`.
+- A duplicate path selects the existing workspace.
+- A different path whose derived title conflicts with another workspace shows a focused error with **Choose again** and **Cancel** actions.
+- Other picker failures show a compact retryable error.
+- The existing create-by-name flow remains unchanged.
+
+## Host boundary
+
+The native dialog RPC is accepted only from a loopback socket with same-origin browser metadata. The RPC does not use the default 30-second request timeout because a system dialog may remain open indefinitely; caller and connection aborts still propagate to the platform process.
+
+Platform adapters invoke native tools without a shell:
+
+- macOS: `osascript` and the system folder chooser.
+- Windows: PowerShell in STA mode and `FolderBrowserDialog`.
+- Linux: `zenity`, with `kdialog` as a fallback when Zenity is unavailable.
+
+## Alternatives considered
+
+- A custom directory browser duplicates operating-system behavior and permissions, and belongs to the Web implementation rather than this desktop-only change.
+- Reusing the manual path field keeps the current error-prone interaction.
+- Adding authentication infrastructure for one local native dialog would expand the change beyond its threat model; loopback and same-origin checks are sufficient for this carrier.
+
+## Consequences
+
+The current GUI opens one local folder through a native picker on macOS, Windows, and Linux. Cancelling changes no state, failures remain retryable, and duplicate paths are idempotent while title conflicts require an explicit new choice. The selected workspace and its displayed name refresh before a new blank session starts. Existing workspace creation by name remains available.
+
+The added host, runtime, component, and GUI tests cover the native boundary, request trust checks, cancellation and failure handling, existing-path reuse, title conflicts, and the immediate visible-name update. The privileged RPC remains specific to the local desktop carrier; a remote Web directory browser is outside this decision.
+
+## Risks
+
+- Linux desktop environments may provide neither supported picker. The GUI reports that limitation instead of falling back to a typed path.
+- Browser metadata varies outside the supported local carrier. The endpoint intentionally rejects requests that cannot prove the required local same-origin context.

.agents/notes/implemented/feature/2026-07-27-native-workspace-directory-picker.zh.md

@@ -0,0 +1,51 @@
+# Agent Note: 原生工作区目录选择器
+
+Status: implemented
+
+[English](2026-07-27-native-workspace-directory-picker.md) | 中文
+
+## 问题
+
+桌面端 GUI 在添加现有工作区时要求用户输入绝对路径。相比使用操作系统原生选择器选取目录，这种操作速度更慢，也更容易出错。GUI 由本地 Web 载体提供，因此打开原生对话框也会形成一条特权边界，普通远程请求不得越过这条边界。
+
+## 决策
+
+新增一个用于选择单个文件夹的 `host.pickDirectory` RPC，并通过 `WorkspacesService` 暴露该 RPC。工作区菜单提供两个平铺操作：**打开本地文件夹…** 和 **创建新工作区**。选定文件夹后，系统复用现有的 `workspace.create({ path })` 流程，选中返回的工作区，并启动一个空白会话。
+
+工作区管理器必须在选择回调运行前插入或更新返回的工作区。因此，新纳入的目录会立即显示其 basename。再次打开已注册的路径时，则保留该工作区现有的标题。
+
+## 交互契约
+
+- 在 macOS、Windows 和 Linux 上，选择器一次只允许选择一个目录。
+- 取消系统对话框不会显示提示，并返回 `null`。
+- 路径重复时，选中现有工作区。
+- 如果路径不同，但其派生标题与另一个工作区冲突，则显示明确指出该冲突的错误提示，其中包含 **重新选择** 和 **取消** 操作。
+- 选择器的其他故障会显示简洁且可重试的错误提示。
+- 现有的按名称创建流程保持不变。
+
+## 宿主边界
+
+只有来自回环套接字、且携带同源浏览器元数据的请求才能调用原生对话框 RPC。该 RPC 不使用默认的 30 秒请求超时，因为系统对话框可能无限期保持打开；调用方中止或连接中止仍会传递至平台进程。
+
+平台适配器不经 shell，直接调用原生工具：
+
+- macOS：`osascript` 和系统文件夹选择器。
+- Windows：采用 STA 模式的 PowerShell 和 `FolderBrowserDialog`。
+- Linux：使用 `zenity`；Zenity 不可用时回退到 `kdialog`。
+
+## 考虑过的替代方案
+
+- 自定义目录浏览器会重复实现操作系统的行为和权限逻辑，而且应属于 Web 实现，而非本次仅面向桌面端的变更。
+- 继续使用手动路径字段会保留当前容易出错的交互方式。
+- 为一个本地原生对话框添加身份认证基础设施，会使变更范围超出其威胁模型；对当前载体而言，回环与同源检查已经足够。
+
+## 后果
+
+当前 GUI 可以在 macOS、Windows 和 Linux 上通过原生选择器打开一个本地文件夹。取消操作不会改变任何状态，故障仍可重试；重复路径的处理具有幂等性，标题冲突则要求用户明确重新选择。选中的工作区及其显示名称会在启动新的空白会话前完成刷新。现有的按名称创建工作区功能仍可使用。
+
+新增的宿主、运行时、组件和 GUI 测试覆盖原生边界、请求信任校验、取消与故障处理、已有路径复用、标题冲突和可见名称即时更新。该特权 RPC 仍仅面向本地桌面载体；远程 Web 目录浏览器不属于本次决策范围。
+
+## 风险
+
+- Linux 桌面环境可能不提供任何一种受支持的选择器。GUI 会报告这项限制，而不会回退到要求用户输入路径。
+- 在受支持的本地载体之外，浏览器元数据可能有所不同。对于无法证明其满足所需本地同源上下文的请求，该端点会按设计拒绝。