Merge branch 'master' into worktree-tasks-service-seam

2026-07-26 22:57:38 +08:00
parent d0aebc9f92 c8b565b12b
commit d167af3fb7
154 changed files with 6354 additions and 1834 deletions
@@ -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
-2026-07-20-canonical-tool-output-contract.md: 8cd7df98758d6d4ac240fea21e7bbe0c89f26d1b
-2026-07-20-canonical-tool-output-contract.zh.md: 0920e0c2c331a247ecd9a039a05c19c9dd2871bc
+2026-07-20-canonical-tool-output-contract.md: 6b5cd089fcf206e659c7b67b8a996bfe81d0c333
+2026-07-20-canonical-tool-output-contract.zh.md: 61b25b14ca6f048b73a51788f112165745ae7106
@@ -34,7 +34,7 @@ type ToolExecutionResult =

 `tools/post-execute` has two mutually exclusive successful projections. Replacing `content` changes only Native/model presentation and preserves the canonical value and metadata. Replacing `value` revalidates the replacement and recomputes both presentation projections. A block removes the value and becomes a failure. Content replacement is therefore not a confidentiality mechanism: policy that must prevent programmatic access blocks the call or replaces the value.

-Canonical values are execution-local. The agent loop persists `tool/result` with only `content`, `error`, and optional `meta`; Code Mode's `tool/code-dispatch` persists only its bounded summary. Neither event stores the intermediate value, so replay reproduces presentation but cannot reconstruct the programmatic result. When a tool declares `presentationMeta`, it is computed only for a direct surface call; a nested Code dispatch gets no metadata or result card. The outer `run_code` card instead reads final post-policy content and declares no presentation metadata. Generic and tool-owned spill projections similarly skip nested dispatches, whose canonical value never enters model context.
+Canonical values are execution-local. The agent loop persists `tool/result` with only `content`, `error`, and optional `meta`; Code Mode's `tool/code-dispatch` persists the sub-call's rendered `content` and `isError`. Neither event stores the canonical intermediate value, so replay reproduces presentation but cannot reconstruct the programmatic result. When a tool declares `presentationMeta`, it is computed only for a direct surface call; a nested Code dispatch gets no metadata or result card. The outer `run_code` card instead reads final post-policy content and declares no presentation metadata. Generic and tool-owned spill projections similarly skip nested dispatches, whose canonical value never enters model context.

 The first-party tools preserve their existing Native text while returning domain DTOs:

@@ -34,7 +34,7 @@ type ToolExecutionResult =

 `tools/post-execute` 为成功结果提供两种互斥的投影方式。替换 `content` 只改变 Native／模型展示，并保留规范值和元数据。替换 `value` 会重新校验替代值，并重新计算两份展示投影。阻止操作会移除值并转为失败。因此，替换内容并不是保密机制：必须阻止程序化访问的策略，应当阻止调用或替换值。

-规范值仅存在于执行期间。agent loop（智能体循环）持久化的 `tool/result` 只包含 `content`、`error` 和可选的 `meta`；Code Mode 的 `tool/code-dispatch` 只持久化其有界摘要。两个事件都不存储中间值，因此回放可以重现展示，却无法重建程序化结果。当工具声明 `presentationMeta` 时，系统只会为直接的外层调用计算它；嵌套 Code 分发没有元数据或结果卡片。外层 `run_code` 卡片则读取最终的 post-policy 内容，并且不声明展示元数据。通用以及工具自有的输出落盘投影同样跳过嵌套分发，因为它们的规范值永远不会进入模型上下文。
+规范值仅存在于执行期间。agent loop（智能体循环）持久化的 `tool/result` 只包含 `content`、`error` 和可选的 `meta`；Code Mode 的 `tool/code-dispatch` 持久化子调用渲染后的 `content` 与 `isError`。两个事件都不存储规范中间值，因此回放可以重现展示，却无法重建程序化结果。当工具声明 `presentationMeta` 时，系统只会为直接的外层调用计算它；嵌套 Code 分发没有元数据或结果卡片。外层 `run_code` 卡片则读取最终的 post-policy 内容，并且不声明展示元数据。通用以及工具自有的输出落盘投影同样跳过嵌套分发，因为它们的规范值永远不会进入模型上下文。

 第一方工具在保持现有 Native 文本不变的同时返回领域 DTO：

@@ -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
-2026-07-20-code-mode-result-card-completeness.md: 97cd9d722e8252b956e16da03c3b8418451350f3
-2026-07-20-code-mode-result-card-completeness.zh.md: fea162b073e3473f7a07d4bf054408d28851fea9
+2026-07-20-code-mode-result-card-completeness.md: 05ff0ed41c94bef7eb41204d8dd81bbda3c06016
+2026-07-20-code-mode-result-card-completeness.zh.md: a93be4cc42fca87ce4ef11b6ad3a6cbe64bef66f
@@ -16,7 +16,7 @@ The canonical tool registry pipeline owns the final model-facing outer content.

 `run_code` omits `presentResult`. The established generic result fallback keeps the pending program title and renders the raw final `tool/result.content`; that durable, replayable, post-policy projection is the card's only result-content source. The host API proxy therefore omits a separate result view instead of serializing the same content in both `event.data.content` and `view.view.content`. The redundant logs-only `presentationMeta` projection remains removed.

-Nested dispatch remains unchanged. Calls marked by `exec.parent` emit bounded `tool/code-dispatch` diagnostics but no `tool/call` or `tool/result` surface cards, so one outer `run_code` invocation still produces exactly one card.
+Nested dispatch remains unchanged. Calls marked by `exec.parent` emit `tool/code-dispatch` events (full rendered content) but no `tool/call` or `tool/result` surface cards, so one outer `run_code` invocation still produces exactly one card.

 ## Testing

@@ -16,7 +16,7 @@ Status: implemented

 `run_code` 不提供 `presentResult`。既有的通用结果回退机制会保留待完成的程序标题，并渲染原始的最终 `tool/result.content`；这一持久、可回放且经过 post-policy 处理的投影是卡片中结果内容的唯一来源。宿主 API 代理因此不提供单独的结果视图，而不会在 `event.data.content` 与 `view.view.content` 中重复序列化同一内容。冗余的仅含日志的 `presentationMeta` 投影继续保持移除状态。

-嵌套分发保持不变。带有 `exec.parent` 标记的调用会发出有界的 `tool/code-dispatch` 诊断，但不会生成与 `tool/call` 或 `tool/result` 对应的界面卡片，因此一次外层 `run_code` 调用仍然只会生成一张卡片。
+嵌套分发保持不变。带有 `exec.parent` 标记的调用会发出 `tool/code-dispatch` 事件（携带完整渲染内容），但不会生成与 `tool/call` 或 `tool/result` 对应的界面卡片，因此一次外层 `run_code` 调用仍然只会生成一张卡片。

 ## 测试

@@ -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
-2026-06-15-code-mode.md: 8e964eeb36e430b58312427e45cf8e4a99582457
-2026-06-15-code-mode.zh.md: 3de1adfcf287b69ca8307244bde35f286ce4b99d
+2026-06-15-code-mode.md: 1170fa4f9fa778fa9176097317477ea336588d32
+2026-06-15-code-mode.zh.md: 4362efa332d0ed24a6383a4cf75b83c0dba22e7e
@@ -40,9 +40,9 @@ This note owns Code Mode's presentation, composition, isolation, and settlement

 ### The run_code tool and the dispatch bridge

-Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentation transport with one required parameter, `{ code: string }`. It is represented by a normal `ToolDefinition` for dispatch but stays outside the filterable capability layers, so restrictions cannot accidentally remove Code Mode's only entry point. Calls traverse the complete tool pipeline — `tools/pre-execute` → monotonic guards → `tools/execute` around dispatch → `tools/post-execute` → optional definition-owned `finalizeContent` → immutable `tools/result` notification — exactly like native calls; a permission plugin can inspect the program text before it runs, and final-result observers see the normalized outer outcome. Its `execute(args, exec)`:
+Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentation transport with two required parameters, `{ code: string; description: string }` (the description labels the call in UIs, the bash precedent). It is represented by a normal `ToolDefinition` for dispatch but stays outside the filterable capability layers, so restrictions cannot accidentally remove Code Mode's only entry point. Calls traverse the complete tool pipeline — `tools/pre-execute` → monotonic guards → `tools/execute` around dispatch → `tools/post-execute` → optional definition-owned `finalizeContent` → immutable `tools/result` notification — exactly like native calls; a permission plugin can inspect the program text before it runs, and final-result observers see the normalized outer outcome. Its `execute(args, exec)`:

-1. **Build bindings.** One run-scoped signal follows outer cancellation and is aborted whenever the run settles. Each visible tool binding snapshots lossless-JSON arguments, waits on the serialization queue, executes with a deterministic call id and the outer token as `parent`, defers returned contexts through the outer execution, and logs `tool/code-dispatch`. Success returns the tool's final canonical JSON value; failure becomes the program-visible `ToolCallError`. Every sub-call retains its own immutable execution identity and traverses the full tool pipeline.
+1. **Build bindings.** One run-scoped signal follows outer cancellation and is aborted whenever the run settles. Each visible tool binding snapshots lossless-JSON arguments, enters the native-contract dispatch pool (the [live-parallel note](2026-07-26-code-mode-live-parallel-dispatch.md) owns the scheduling design), executes with a deterministic call id and the outer token as `parent`, defers returned contexts through the outer execution, and logs the `tool/code-dispatch-start`/`tool/code-dispatch` pair, the settle side carrying the full rendered result content. Success returns the tool's final canonical JSON value; failure becomes the program-visible `ToolCallError`. Every sub-call retains its own immutable execution identity and traverses the full tool pipeline.
 2. **Runs the program**: `ctx.codeRuntime.run({ program: args.code, bindings: [{ global: 'tools', functions }], signal: runController.signal })`. The runtime receives the run-scoped signal, not only the caller's outer signal, so any way the outer run settles also aborts work inside the runtime.
 3. **Settle after quiescence.** When the runtime settles, the bridge aborts outstanding work and drains the dispatch queue before returning. Success returns captured logs and the completion value as canonical output; the registry renders that value into durable `tool/result.content`, which the result card reads directly. A runtime failure becomes `CodeRunFailedError`; backend rejection uses the registry's normal error boundary. Both produce structured error results, and no sub-call can append after `run_code` settles.

@@ -54,7 +54,7 @@ Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentat

 ### Observability: `tool/code-dispatch`

-Each sub-dispatch appends a log-only `tool/code-dispatch` event containing parent and child call ids, tool identity, normalized arguments, and result summary. It remains outside model history but available to persistence and UIs. Appends occur inside the open `run_code` turn. Direct executions without an agent still run but cannot log the event.
+Each sub-dispatch appends a log-only `tool/code-dispatch-start` event at pool entry and a `tool/code-dispatch` settle event containing parent and child call ids, tool identity, normalized arguments, and the complete rendered `content`/`isError` outcome. It remains outside model history but available to persistence and UIs. Appends occur inside the open `run_code` turn. Direct executions without an agent still run but cannot log the event.

 ### The code-runtime seam

@@ -40,9 +40,9 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一

 ### run_code 工具与分发桥

-在 `'code'` 和 `'both'` 下，注册表拥有 `run_code` 作为保留的呈现传输通道，带一个必需参数 `{ code: string }`。它由一个正常的 `ToolDefinition` 表示以供分发，但位于可过滤的能力层之外，因此限制规则不会意外移除 Code Mode 的唯一入口。调用遍历完整的工具流水线——`tools/pre-execute` → 单调守卫 → `tools/execute` 包裹分发 → `tools/post-execute` → 由定义拥有的可选 `finalizeContent` → 不可变的 `tools/result` 通知——与原生调用完全一致；权限插件可以在程序运行前检查程序文本，最终结果观察者看到的是规范化的外层结果。其 `execute(args, exec)`：
+在 `'code'` 和 `'both'` 下，注册表拥有 `run_code` 作为保留的呈现传输通道，带两个必需参数 `{ code: string; description: string }`（description 为 UI 标注该调用，沿用 bash 的先例）。它由一个正常的 `ToolDefinition` 表示以供分发，但位于可过滤的能力层之外，因此限制规则不会意外移除 Code Mode 的唯一入口。调用遍历完整的工具流水线——`tools/pre-execute` → 单调守卫 → `tools/execute` 包裹分发 → `tools/post-execute` → 由定义拥有的可选 `finalizeContent` → 不可变的 `tools/result` 通知——与原生调用完全一致；权限插件可以在程序运行前检查程序文本，最终结果观察者看到的是规范化的外层结果。其 `execute(args, exec)`：

-1. **构建绑定。** 一个 run 级别的 signal 跟随外层取消，并在 run 结算时被 abort。每个可见工具绑定都会对无损 JSON 参数创建快照，等待序列化队列，以确定性的 call id 和外层 token 作为 `parent` 执行，通过外层 execution 延后返回的上下文，并记录 `tool/code-dispatch`。成功时返回工具最终的规范 JSON 值；失败则变为程序可见的 `ToolCallError`。每个子调用保留自己不可变的执行标识，并遍历完整的工具流水线。
+1. **构建绑定。** 一个 run 级别的 signal 跟随外层取消，并在 run 结算时被 abort。每个可见工具绑定都会对无损 JSON 参数创建快照，进入原生契约的分发池（调度设计由[实时并行 Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) 负责），以确定性的 call id 和外层 token 作为 `parent` 执行，通过外层 execution 延后返回的上下文，并记录 `tool/code-dispatch-start`/`tool/code-dispatch` 事件对，其中结算侧携带完整渲染后的结果内容。成功时返回工具最终的规范 JSON 值；失败则变为程序可见的 `ToolCallError`。每个子调用保留自己不可变的执行标识，并遍历完整的工具流水线。
 2. **运行程序**：`ctx.codeRuntime.run({ program: args.code, bindings: [{ global: 'tools', functions }], signal: runController.signal })`。运行时接收的是 run 级别的 signal 而非仅调用方的外层 signal，因此外层 run 以任何方式结算都会同时 abort 运行时内部的工作。
 3. **完全停稳后结算。** 运行时结算后，桥 abort 未完成的工作并排空分发队列后再返回。成功时返回捕获的日志和完成值，将其作为规范输出；注册表再把该值渲染为持久化的 `tool/result.content`，供结果卡片直接读取。运行时失败变为 `CodeRunFailedError`；后端拒绝使用注册表的正常错误边界。两者都产生结构化的错误结果，且 `run_code` 结算后不允许子调用追加。

@@ -54,7 +54,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一

 ### 可观测性：`tool/code-dispatch`

-每次子分发追加一个仅日志的 `tool/code-dispatch` 事件，包含父子 call id、工具标识、规范化参数和结果摘要。它不进入模型历史，但可供持久化和 UI 使用。追加发生在开放的 `run_code` 轮次内。没有 agent 的直接执行仍然运行，但无法记录该事件。
+每次子分发在进入分发池时追加一个仅日志的 `tool/code-dispatch-start` 事件，并以一个 `tool/code-dispatch` 结算事件收尾，后者包含父子 call id、工具标识、规范化参数以及完整渲染后的 `content`/`isError` 结果。它不进入模型历史，但可供持久化和 UI 使用。追加发生在开放的 `run_code` 轮次内。没有 agent 的直接执行仍然运行，但无法记录该事件。

 ### code-runtime seam

@@ -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
-2026-07-20-code-mode-typed-tool-returns.md: 1b5cbb9f4664c371a03cfefd079d5dc531711b51
-2026-07-20-code-mode-typed-tool-returns.zh.md: 70fd9ee72803c5cd2fa228a1d38ddf7ae47a4814
+2026-07-20-code-mode-typed-tool-returns.md: 3d8642d66baf521f22dfb1ea0ef3e64683f918d4
+2026-07-20-code-mode-typed-tool-returns.zh.md: fea1be3e236c0ccba729e449ab9714ed497d900a
@@ -73,7 +73,7 @@ Dynamic Cordis mounting follows the same rule: `cordis_mount` returns `{ id, plu

 ### Persistence, metadata, and spill

-Nested dispatch keeps the existing bounded `tool/code-dispatch.resultSummary` for diagnostics but does not persist canonical values. `tool/result` continues to persist only rendered content, error, and optional metadata. This is deliberately not a session-format change, so `SESSION_FORMAT_VERSION` remains unchanged and replay cannot recreate intermediate program values.
+Nested dispatch logs the sub-call's full rendered `content`/`isError` on `tool/code-dispatch` but does not persist canonical values. `tool/result` continues to persist only rendered content, error, and optional metadata. `SESSION_FORMAT_VERSION` remains unchanged (pre-release shape churn does not bump it) and replay cannot recreate intermediate canonical program values.

 The opaque `exec.parent` token marks nested calls. Presentation metadata and generic or tool-owned spill projections skip those calls because they have no direct result card and their canonical values never enter context. The outer `run_code` call alone produces one card and may spill its final post-policy presentation; `run_code` intentionally declares neither a result presenter nor presentation metadata, so UI adapters complete the card through their generic raw-content fallback using durable `tool/result.content`.

@@ -73,7 +73,7 @@ Code Mode 通过运行时请求中的 `{ name: "ToolCallError", memberNameProper

 ### 持久化、元数据与输出落盘

-嵌套分发会为诊断保留既有的有界 `tool/code-dispatch.resultSummary`，但不会持久化规范值。`tool/result` 继续只持久化渲染后的内容、错误和可选元数据。这并非会话格式变更，因此 `SESSION_FORMAT_VERSION` 保持不变，回放也无法重建程序的中间值。
+嵌套分发在 `tool/code-dispatch` 上记录子调用完整渲染后的 `content`/`isError`，但不会持久化规范值。`tool/result` 继续只持久化渲染后的内容、错误和可选元数据。`SESSION_FORMAT_VERSION` 保持不变（预发布阶段的形状变动不递增版本号），回放也无法重建程序的规范中间值。

 不透明的 `exec.parent` token 用于标识嵌套调用。由于这些调用没有直接对应的结果卡片，而且其规范值永远不会进入上下文，展示元数据以及通用或工具自有的输出落盘投影都会跳过它们。只有外层 `run_code` 调用会生成一张卡片，并且可能将 post-policy 处理后的最终展示写入落盘文件；`run_code` 有意既不声明结果展示器，也不声明展示元数据，因此 UI 适配器会通过通用的原始内容回退机制，使用持久化的 `tool/result.content` 补全该卡片。

@@ -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
+2026-07-26-code-dispatch-ui-foundation.md: a1629c77304bc7ef744f7a09241bcdfc81e461ae
+2026-07-26-code-dispatch-ui-foundation.zh.md: 164b1e8eed343e88b6529e4fedde06ba442d7d51
@@ -0,0 +1,31 @@
+# Agent Note: Code Mode UI foundation — run_code description and native-parity dispatch logging
+
+Status: implemented
+
+English | [中文](2026-07-26-code-dispatch-ui-foundation.zh.md)
+
+> Scope: the host-side contract changes that let a UI render a Code Mode turn with the same fidelity as native tool calls — the first PR of the Code Mode web-UI stack. The [Code Mode foundation](2026-06-15-code-mode.md) owns the transport design; this note owns the model-visible `description` parameter, the full-content `tool/code-dispatch` payload, and the temporary `DSH_TOOLS_MODE` enablement seam for the `dsh` config tree.
+
+## Problem
+
+A `run_code` turn was opaque in every product surface. The call card's title was the raw program text — unreadable at row width, and unlike `bash` (whose required `description` labels the card while the command rides the expanded input) there was no model-authored label at all. The `tool/code-dispatch` event carried only a 200-char, cwd-normalized `resultSummary` of each sub-call, so no UI could ever show what a sub-call actually returned: the planned web conversation view renders sub-calls through the exact components that render native `tool/result` cards, and a bounded summary cannot feed a native-parity card. And the `dsh web` composition had no way to enable Code Mode at all — the `tools` row pinned the schema default and the runtime was absent from the tree.
+
+## Decision
+
+Three changes, one per obstacle:
+
+1. **`run_code` gains a required `description` parameter** (bash's exact contract: active voice, 5-10 words, shown in the UI; whitespace-only rejected at execute). `presentCall` now titles the card with the description and moves the program to `rawInput`. The prompt-side cost is a few tokens per call; the return is that every surface — TUI card, ACP title, web row — gets a human-readable label without parsing TypeScript.
+2. **`tool/code-dispatch` logs the sub-call's complete model-facing outcome** — `content: ContentBlock[]` + `isError`, the `tool/result` vocabulary — replacing `resultSummary` and deleting the summarize/cwd-normalization machinery outright. A UI renders a sub-call through the identical code path as a native result, including error text and non-text blocks. The event stays log-only (`deriveMessages()` ignores it): nothing about model context changes.
+3. **`DSH_TOOLS_MODE` env var on the `dsh` config tree** (`native`|`code`|`both`; unset keeps the schema default): the `tools` row reads it via `!!js`, and the worker code runtime is mounted unconditionally (Loader metadata is static, so no conditional row exists; a native boot only registers the service — workers spawn per run). This is an explicitly temporary seam: per-session tool-mode selection owned by the web UI is the design goal, and the env var dies when that lands.
+
+## Alternatives considered
+
+**Keep a bounded summary (raised cap, or a cap + `truncated` flag).** Rejected: the stack's settled requirement is that sub-call rows and details render *identically* to native calls; any cap forces a second, degraded render path plus truncation UI. The cost accepted instead: a program that reads a large file logs the rendered content verbatim on the dispatch event — uncapped, outside spill policy, growing the session log by the same bytes. Spill integration for the logged copy is deferred to a later PR of this stack (the projection exists; wiring it into the bridge is mechanical once the event shape settles with the start/end pair).
+
+**A `--tools-mode` CLI flag or profile key.** Deferred, not rejected: the flag grammar suggests permanence, and the profile json is user config — both would harden a seam the per-session design intends to remove. An env var reads as the workaround it is.
+
+**Log the canonical `value` instead of rendered `content`.** Rejected: `tool/result` persists content, not values (the [canonical output contract](../architecture/2026-07-20-canonical-tool-output-contract.md)), and native parity means matching that exactly; values remain execution-local everywhere.
+
+## Consequences
+
+Session format keeps `SESSION_FORMAT_VERSION` 0 (pre-release churn does not bump; old logs with `resultSummary` simply carry an extra unread field and lack `content` — v0 makes no compatibility promise). Existing code-mode snapshot fixtures were re-recorded. Model-visible surface grew: the `run_code` schema (one required parameter) and every code-mode system prompt/tool-schema snapshot changed. The web UI stack (subsequent PRs) builds directly on the new event payload; live per-sub-call running state needs a dispatch start/end pair that will reshape this event again.
@@ -0,0 +1,31 @@
+# Agent Note：Code Mode 的 UI 基础——run_code 的 description 参数，以及与原生同等保真的分发日志
+
+Status: implemented
+
+[English](2026-07-26-code-dispatch-ui-foundation.md) | 中文
+
+> 范围：让 UI 能以与原生工具调用相同的保真度渲染 Code Mode 轮次的宿主侧契约变更，即 Code Mode web UI 堆叠 PR（Pull Request）链的第一个 PR。传输设计归 [Code Mode 基础](2026-06-15-code-mode.md)所有；模型可见的 `description` 参数、携带完整内容的 `tool/code-dispatch` 载荷，以及 `dsh` 配置树上临时的 `DSH_TOOLS_MODE` 启用 seam，归本篇所有。
+
+## 问题
+
+`run_code` 轮次过去在每个产品表面上都不透明。调用卡片的标题就是原始程序文本，在行宽内无法阅读；而且不同于 `bash`（其必填的 `description` 用作卡片标签，命令本身放在展开后的输入里），`run_code` 完全没有模型撰写的标签。`tool/code-dispatch` 事件过去只携带每个子调用的 `resultSummary`（上限 200 字符、经 cwd 归一化），因此任何 UI 都无从展示子调用实际返回的内容：规划中的 web 对话视图会用渲染原生 `tool/result` 卡片的同一批组件来渲染子调用，而有界摘要无法支撑一张与原生同等保真的卡片。同时，`dsh web` 组合此前根本无法启用 Code Mode：`tools` 行钉死在 schema 默认值上，配置树里也完全没有该运行时。
+
+## 决策
+
+三项变更，每项对应一个障碍：
+
+1. **`run_code` 新增必填的 `description` 参数**（与 bash 完全相同的契约：主动语态、5-10 个词、展示在 UI 中；仅含空白的取值在执行时被拒绝）。`presentCall` 现在以该 description 作为卡片标题，并把程序文本移入 `rawInput`。提示词侧的成本是每次调用多出几个 token；换来的是每个表面——TUI 卡片、ACP（Agent Client Protocol）标题、web 行——都无需解析 TypeScript 就能获得可供人阅读的标签。
+2. **`tool/code-dispatch` 记录子调用面向模型的完整结果**（`content: ContentBlock[]` 加 `isError`，即 `tool/result` 的词汇），取代 `resultSummary`，并把摘要与 cwd 归一化机制彻底删除。UI 渲染子调用走的代码路径与渲染原生结果完全相同，包括错误文本和非文本块。该事件保持仅日志（`deriveMessages()` 忽略它）：模型上下文没有任何变化。
+3. **`dsh` 配置树上的 `DSH_TOOLS_MODE` 环境变量**（`native`|`code`|`both`；未设置时保持 schema 默认值）：`tools` 行通过 `!!js` 读取它，worker 代码运行时则无条件挂载（Loader 元数据是静态的，因此不存在条件行；native 启动只是注册该服务，worker 要到每次运行时才 spawn）。这是一个明确标注为临时的 seam：设计目标是让 web UI 拥有按会话的工具模式选择，该目标落地后，这个环境变量随即退役。
+
+## 曾考虑的替代方案
+
+**保留有界摘要（提高上限，或上限加 `truncated` 标志）。** 否决：本堆叠 PR 链已敲定的要求是，子调用的行与详情必须与原生调用渲染得*完全一致*；任何上限都会强制引入第二条降级的渲染路径，外加截断 UI。转而接受的代价是：读取大文件的程序会把渲染后的内容原样记录在分发事件上，不设上限、位于 spill 策略之外，并以同样的字节数增大会话日志。已记录副本的 spill 集成推迟到本链靠后的 PR（投影已经存在；待事件形状随 start/end 事件对一同定形，把它接入桥接层只是机械工作）。
+
+**一个 `--tools-mode` CLI（命令行界面）标志或 profile 配置键。** 推迟，而非否决：标志语法暗示永久性，profile json 又是用户配置；两者都会固化这个 seam，而按会话选择的设计本就打算移除它。环境变量则如实呈现了它权宜之计的本质。
+
+**记录规范 `value`，而非渲染后的 `content`。** 否决：`tool/result` 持久化的是内容而非值（见[规范输出契约](../architecture/2026-07-20-canonical-tool-output-contract.md)），与原生同等保真意味着与之精确对齐；值在任何地方都保持执行期本地。
+
+## 后果
+
+会话格式保持 `SESSION_FORMAT_VERSION` 为 0（预发布阶段的变动不递增版本号；携带 `resultSummary` 的旧日志只是多出一个不被读取的字段并缺少 `content`；v0 不作任何兼容性承诺）。既有的 code-mode 快照 fixture（测试前置数据）已重新录制。模型可见表面扩大了：`run_code` 的 schema（新增一个必填参数）以及每一份 code-mode 系统提示词／工具 schema 快照都发生了变化。web UI 堆叠 PR 链（后续各 PR）直接构建在新的事件载荷之上；每个子调用的实时运行状态还需要一对分发 start/end 事件，这将再次重塑本事件的形状。
@@ -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
+2026-07-26-code-mode-chat-subcall-rows.md: 7d666f0a9e4b8bdb9bd6f5d0d0984fee0c4b21e2
+2026-07-26-code-mode-chat-subcall-rows.zh.md: fb9b0c62bb702cfdb7ba3c8ccce73d8e43f29c1b
@@ -0,0 +1,32 @@
+# Agent Note: Code Mode chat rendering — sub-calls as native rows under the parent
+
+Status: implemented
+
+English | [中文](2026-07-26-code-mode-chat-subcall-rows.zh.md)
+
+> Scope: how the web chat view renders a `run_code` turn — the client-side half of the Code Mode UI stack, built on the [host foundation](2026-07-26-code-dispatch-ui-foundation.md) (full-content `tool/code-dispatch`, the required `description` parameter). The [toolview dissolution](../architecture/2026-07-23-toolview-dissolution.md) owns the slot model this rides on.
+
+## Problem
+
+With Code Mode enabled, the chat view showed one opaque `run_code` row: raw program text as the summary, sub-calls invisible everywhere. The settled product requirement is the opposite: each sub-call must render *identically* to a native tool call — same row components, same custom registrations, same details panel — while the transcript stays honest about the fact that the model made ONE call.
+
+## Decision
+
+**Sub-calls are `ToolResultNode`s indexed off the surface flow, rendered through the same keyed slot as native rows, nested always-visible under their parent.**
+
+- **Data layer**: `Session.applyEventSideEffects` folds each in-window `tool/code-dispatch` into `ConversationSnapshot.codeDispatches: ReadonlyMap<parentCallId, readonly CodeSubCall[]>`, where `CodeSubCall` IS `ToolResultNode` (the sub-call id as `callId`, the logged args JSON-stringified into `call.argsRaw`, the full logged `content`/`isError`). Live mux frames and history replay build the identical index (`rebuildDerivedFromWindow` clears and re-derives; copy-on-write per-parent arrays keep snapshot references memo-stable). Sub-calls never join `nodes` — the surface flow remains exactly the model-visible turn structure. The event is narrowed structurally at the wire-consumer boundary (dsh-tools' host types cannot enter the client program — the host/client `Context` merges collide), the same posture as every cross-wire payload.
+- **Render layer**: `ChatView`'s `CallRow` renders the parent, then — for parents present in the index — a `[data-subcalls]` nest of `SubCallRow`s, each dispatching through the SAME `'conversation.chat.toolview'` keyed hole with `entryKey = sub-tool name` and the same `GenericToolCard` fallback. Identity with native rows holds by construction: a keyed registration (e.g. the bash sample) takes over sub-rows exactly as it takes over top-level rows, with zero registration changes. Running parents (`runningCalls`) nest their so-far dispatches the same way, so sub-rows stream in live during the run (PR1 logs each dispatch as it completes).
+- **`run_code` presentation**: a new `code` row variant (classifier `run_code → code`, `Code` title, `IconCodeOutline16`) summarizes with the model-authored `description` and expands to the program itself (monospace on the markdown code-block fill) rather than the args JSON envelope.
+- **Details panel**: `materialFor` falls through nodes → runningCalls → the dispatch index, so a selected sub-callId resolves to full args and complete output through the identical rendering path as a native settled call.
+
+## Alternatives considered
+
+**Sub-calls flat in the surface flow (fold them into `nodes`).** Rejected: misrepresents the transcript — the model made one call; nesting under the parent preserves the code↔calls association and keeps the fold's model-visible-order invariant untouched.
+
+**Hidden until the parent row expands.** Rejected by product decision: the sub-calls ARE the story of a Code Mode turn; hiding them re-creates the opacity this feature removes. The parent's expand toggle reveals only the program.
+
+**A dedicated sub-call row component.** Rejected: the whole point is identity with native rows; a parallel component would drift. The nest wrapper (indent + left edge) is the only sub-call-specific chrome.
+
+## Consequences
+
+Custom toolview registrations apply to sub-calls for free — and deliberately: there is no per-registration opt-out short of the component reading its own context, which no current consumer needs. Selection highlighting reaches nested rows through the same `selectedCallId` channel (group membership tests both levels). Trajectory/waterfall still render `run_code` as a single row — their sub-call spans are deferred to the PR that adds dispatch timing (start/end events), without which a waterfall span would be a lie. Fixture turn 64 (`?fixture`) plus the `code-mode-round` browser e2e (recorded real round, keyless replay) pin the full surface; the jsdom suites pin the slot dispatch, error states, details resolution, and index reference stability.
@@ -0,0 +1,32 @@
+# Agent Note：Code Mode 的 chat 渲染——子调用作为父行之下的原生行
+
+Status: implemented
+
+[English](2026-07-26-code-mode-chat-subcall-rows.md) | 中文
+
+> 范围：web chat 视图如何渲染一个 `run_code` 轮次，即 Code Mode UI 堆叠 PR（Pull Request）链的 client 侧一半，构建在[宿主侧基础](2026-07-26-code-dispatch-ui-foundation.md)之上（携带完整内容的 `tool/code-dispatch`、必填的 `description` 参数）。本篇所依托的 slot 模型归 [toolview 溶解](../architecture/2026-07-23-toolview-dissolution.md)所有。
+
+## 问题
+
+启用 Code Mode 后，chat 视图过去只显示一条不透明的 `run_code` 行：摘要就是原始程序文本，子调用则处处不可见。已敲定的产品要求恰恰相反：每个子调用都必须与原生工具调用渲染得*完全一致*——同样的行组件、同样的自定义注册、同样的 details 面板——同时 transcript（文本记录）仍须如实反映模型只发起了一次调用这一事实。
+
+## 决策
+
+**子调用是 surface 流之外单独索引的 `ToolResultNode`，经由与原生行相同的 keyed slot 渲染，以始终可见的方式嵌套在父行之下。**
+
+- **数据层**：`Session.applyEventSideEffects` 把窗口内的每条 `tool/code-dispatch` 折入 `ConversationSnapshot.codeDispatches: ReadonlyMap<parentCallId, readonly CodeSubCall[]>`，其中 `CodeSubCall` 本身就是 `ToolResultNode`（子调用 id 充当 `callId`，已记录的参数经 JSON 字符串化写入 `call.argsRaw`，完整记录的 `content`/`isError` 原样携带）。live mux 帧与历史回放构建出同一份索引（`rebuildDerivedFromWindow` 先清空再重新推导；逐父级的写时复制（copy-on-write）数组保持快照引用 memo 稳定）。子调用永不进入 `nodes`——surface 流始终精确等于模型可见的轮次结构。该事件在 wire 消费方边界作结构性收窄（dsh-tools 的 host 类型进不了 client 程序——host/client 两侧的 `Context` 声明合并会冲突），姿态与所有跨 wire 载荷一致。
+- **渲染层**：`ChatView` 的 `CallRow` 先渲染父行，随后对索引中出现的父级渲染一组 `[data-subcalls]` 嵌套的 `SubCallRow`，每一行都经由同一个 `'conversation.chat.toolview'` keyed 孔位、以 `entryKey = sub-tool name` 分发，并共用同一个 `GenericToolCard` fallback。与原生行的同一性由构造保证：一个 keyed 注册（例如 bash 样例）接管子行与接管顶层行的方式完全相同，注册本身零改动。运行中的父调用（`runningCalls`）也以同样的方式嵌套目前已产生的分发，因此子行在运行期间实时流入（PR1 在每次分发完成时即记录该分发）。
+- **`run_code` 的呈现**：新增一种 `code` 行变体（分类器映射 `run_code → code`、标题 `Code`、图标 `IconCodeOutline16`），以模型撰写的 `description` 作摘要，展开后显示程序本身（在 markdown 代码块的填充底色上以等宽字体呈现），而非参数的 JSON 信封。
+- **details 面板**：`materialFor` 按 nodes → runningCalls → 分发索引的顺序逐级回落，因此被选中的子调用 callId 会经由与已完结的原生调用完全相同的渲染路径，解析出完整参数与完整输出。
+
+## 曾考虑的替代方案
+
+**把子调用平铺进 surface 流（折入 `nodes`）。** 否决：这会歪曲 transcript——模型只发起了一次调用；嵌套在父行之下既保住代码↔调用的关联，也让 fold 的模型可见顺序不变式原封不动。
+
+**隐藏子调用，展开父行后才显示。** 由产品决策否决：子调用正是一个 Code Mode 轮次的核心内容；把它们藏起来，等于重新制造出本功能所要消除的那种不透明。父行的展开开关只用于显示程序本身。
+
+**专用的子调用行组件。** 否决：本功能的全部要义就在于与原生行保持同一性；一个平行组件必然漂移。嵌套包装层（缩进 + 左侧边线）是子调用唯一的专属 chrome。
+
+## 后果
+
+自定义 toolview 注册免费适用于子调用——而且是刻意为之：不存在按注册粒度的 opt-out，唯一的出路是组件自行读取自身上下文，而当前没有任何消费方需要这么做。选中高亮经由同一条 `selectedCallId` 通道到达嵌套行（分组归属判断会同时检验两个层级）。trajectory/waterfall 仍把 `run_code` 渲染为单独一行——它们的子调用 span 推迟到增加分发计时（start/end 事件）的那个 PR；缺少计时，waterfall 上的 span 就是在撒谎。fixture（测试前置数据）的轮次 64（`?fixture`），加上 `code-mode-round` 浏览器 e2e（录制的真实 round、无密钥回放），共同锁定整个表面；jsdom 套件则锁定 slot 分发、错误状态、details 解析与索引引用稳定性。
@@ -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
+2026-07-26-code-mode-live-parallel-dispatch.md: b4afc21be902d8ed3e5bee2ad1a540413a864f25
+2026-07-26-code-mode-live-parallel-dispatch.zh.md: 409e4cbf9ea3d1b4d1bbe0cd86b494429ebb8a3d
@@ -0,0 +1,32 @@
+# Agent Note: Code Mode live dispatch lifecycle and native-contract parallelism
+
+Status: implemented
+
+English | [中文](2026-07-26-code-mode-live-parallel-dispatch.zh.md)
+
+> Scope: the third PR of the Code Mode UI stack — the `tool/code-dispatch-start` event, per-sub-call running state in the web chat, and the bridge's scheduler reusing the native concurrency contract. Builds on the [host foundation](2026-07-26-code-dispatch-ui-foundation.md) and [chat sub-call rows](2026-07-26-code-mode-chat-subcall-rows.md); the native contract itself is owned by the [parallel tool-call note](2026-07-10-parallel-tool-call-execution.md).
+
+## Problem
+
+Two gaps remained after the first two PRs. Sub-call rows appeared only when each dispatch *settled* — while one ran, the UI showed nothing for it, so a slow sub-call read as a stalled parent. And the bridge serialized every binding call ("even `Promise.all` executes one at a time"), a placeholder from before tools carried concurrency metadata: `isConcurrencySafe` now exists, the loop scheduler already runs native siblings in bounded pools, and a Code Mode program awaiting three independent reads paid 3× the latency the native path would.
+
+## Decision
+
+**One lifecycle pair, one scheduling contract, shared with native.**
+
+- **Event pair**: `tool/code-dispatch-start` (parent/sub ids, name, normalized args) is appended when the scheduler actually starts a call — not at submission, so a queued call abandoned by run settlement logs nothing. The existing `tool/code-dispatch` settles the pair (same `subCallId`); every started call settles exactly once (aborts settle as `isError` outcomes through the pipeline). Timing = the two events' `time` fields. Both stay log-only; model context is untouched; format stays v0.
+- **Bridge scheduler**: submitted calls are classified at start time via `registry.executionMode` (the SAME fail-closed `isConcurrencySafe` contract the loop uses) and start strictly in submission order. One single-lane driver owns every ORDERED stage — the start append, `prepare` (pre-execute/guards), the head-of-line `finalize`/`finish` commit (post-execute + context deferral + settle append) — so ordered policy stages never overlap each other and only the around-dispatch/body stage runs concurrently, exactly the native loop's sequencing (`fillPool` awaits `startCall` then `commitReady`). Consecutive parallel-classified calls overlap up to `maxParallelSubCalls` (a `Config` field validated by the Loader schema AND re-validated at direct construction, default 10 — the loop scheduler's own default; `1` restores serial dispatch); an exclusive call drains the pool, runs alone, and holds its barrier until its COMMIT completes (post-execute included), like a native exclusive group. Run settlement aborts in-flight dispatches and abandons queued-unstarted ones (binding rejection, no events), then drains to quiescence — including a commit already mid-flight when the program returned — before the outer result closes the turn.
+- **Client**: `CodeSubCall` widens to `RunningToolCall | ToolResultNode` — a start event lands the running shape in the dispatch index (rows derive the running ring from the shape, exactly as for native in-flight calls), and its settle replaces the entry in place, preserving start order under parallel completion and carrying the start's `time` as `callTime` (duration source). A settle with no observed start (window cut mid-pair, or a pre-start-event log) appends directly, so old logs keep rendering.
+- **SDK prompt**: the model-facing "calls execute sequentially" sentence is replaced with the true contract (independent safe calls may overlap under `Promise.all`; dependent work sequences with `await`) — a model-visible change, re-recorded across every code-mode snapshot.
+
+## Alternatives considered
+
+**Unrestricted parallelism (let `Promise.all` overlap everything).** Rejected: writes could race; the native scheduler exists precisely because the tool, not the caller, owns the safety claim. One concurrency vocabulary across native and Code Mode was the settled requirement.
+
+**Emit the start event at submission instead of pool entry.** Rejected: a submission-time start would show queued-but-never-run calls as "running" and would force a third "abandoned" terminal event to reconcile the log. Start-at-entry keeps the invariant *started ⇔ settles exactly once* and needs no third event.
+
+**Reuse the loop scheduler's implementation directly.** Rejected: the loop schedules a fully-parsed batch with model-order result commitment; the bridge schedules an open-ended stream of submissions whose results return to the program (not the transcript), so only the *contract* (classification, pool, barriers) is shared, not the machinery.
+
+## Consequences
+
+Programs get native-grade latency for independent reads with no new model-side API — `Promise.all` simply works better, and prompt guidance changed accordingly. The web UI shows per-sub-call running rings live (fixture emits start/settle pairs; jsdom pins the running shape; the runtime spec pins in-place settlement, out-of-order completion, and callTime pairing). PR6 (trajectory/waterfall spans) can now draw truthful spans from the pair's timing. The spill PR (next) inherits the settle event as its single bounding point.
@@ -0,0 +1,32 @@
+# Agent Note：Code Mode 的实时分发生命周期，以及复用原生契约的并行执行
+
+Status: implemented
+
+[English](2026-07-26-code-mode-live-parallel-dispatch.md) | 中文
+
+> 范围：Code Mode UI 堆叠 PR（Pull Request）链的第三个 PR，涵盖 `tool/code-dispatch-start` 事件、web chat 中每个子调用的运行状态，以及桥接层调度器对原生并发契约的复用。构建在[宿主侧基础](2026-07-26-code-dispatch-ui-foundation.md)与 [chat 子调用行](2026-07-26-code-mode-chat-subcall-rows.md)之上；原生契约本身归[并行工具调用 Agent Note](2026-07-10-parallel-tool-call-execution.md) 所有。
+
+## 问题
+
+前两个 PR 之后仍留有两个缺口。子调用行过去只在每次分发*结算*（settle）后才出现：某次分发运行期间，UI 对它毫无展示，于是一个慢的子调用看上去就像父调用卡住了。而桥接层过去把每一次绑定调用都串行化（「即使 `Promise.all` 也一次只执行一个」），这是工具尚未携带并发元数据时留下的占位实现：如今 `isConcurrencySafe` 已经存在，agent loop（智能体循环）调度器早已在有界并发池中运行原生兄弟调用，而一个等待三个独立读取的 Code Mode 程序，付出的延迟却是原生路径的 3 倍。
+
+## 决策
+
+**一对生命周期事件，一份调度契约，与原生共用。**
+
+- **事件对**：`tool/code-dispatch-start`（父/子 id、名称、规范化参数）在调度器真正启动某个调用时才追加，而非在提交时，因此因 run 结算而被放弃的排队调用不会留下任何日志。既有的 `tool/code-dispatch` 结算该事件对（`subCallId` 相同）；每个已启动的调用恰好结算一次（中止也会作为 `isError` 结果经由流水线结算）。计时即这两个事件的 `time` 字段。两个事件都保持仅日志；模型上下文不受影响；格式保持 v0。
+- **桥接层调度器**：已提交的调用在启动那一刻经 `registry.executionMode` 分类（与 loop 所用完全相同的 fail-closed `isConcurrencySafe` 契约），并严格按提交顺序启动。所有有序阶段——start 事件追加、`prepare`（pre-execute/守卫）、队首 `finalize`/`finish` 提交（post-execute + 上下文延迟提交 + settle 事件追加）——由单一驱动车道独占执行，因此有序策略阶段彼此绝不重叠，只有 around-dispatch/工具体阶段并发运行，与原生 loop 的时序完全一致（`fillPool` 先 await `startCall` 再 `commitReady`）。连续被分类为可并行的调用可以重叠执行，上限为 `maxParallelSubCalls`（`Config` 字段，Loader schema 校验之外直接构造时也重新校验，默认值 10，即 loop 调度器自身的默认值；设为 `1` 即恢复串行分发）；独占调用则先排空池、独自运行，且其屏障保持到自身提交（含 post-execute）完成为止，与原生独占分组一致。run 结算时会中止仍在运行的分发，并放弃已排队未启动的分发（绑定调用被拒绝，不产生事件），随后排空到完全停稳——包括程序返回时已在途的提交——之后外层结果才结束该轮次。
+- **client 侧**：`CodeSubCall` 拓宽为 `RunningToolCall | ToolResultNode`：start 事件把运行中形状写入分发索引（行组件从该形状推导出运行指示环，与原生运行中的调用处理完全一致），其结算事件则原位替换该条目，即使并行完成也保持启动顺序不变，并把 start 事件的 `time` 作为 `callTime`（时长来源）带入。未观察到对应 start 的结算事件（窗口切在事件对中间，或日志录制于 start 事件引入之前）会直接追加，因此旧日志仍能照常渲染。
+- **SDK 提示词**：面向模型的「调用按顺序执行」一句替换为真实契约（相互独立的安全调用可以在 `Promise.all` 下重叠执行；相互依赖的工作以 `await` 顺序衔接）；这是模型可见的变更，每一份 code-mode 快照都已重新录制。
+
+## 曾考虑的替代方案
+
+**不加限制的并行（让 `Promise.all` 重叠一切）。** 否决：写操作可能产生竞态；原生调度器之所以存在，正是因为安全性声明归工具所有，而不归调用方。原生与 Code Mode 使用同一套并发词汇，是已敲定的要求。
+
+**在提交时而非入池时发出 start 事件。** 否决：提交即发 start 会把排了队却从未运行的调用显示成「运行中」，还得强行引入第三种「已放弃」终态事件才能使日志自洽。入池才发 start 保住了*已启动 ⇔ 恰好结算一次*这一不变式，且不需要第三种事件。
+
+**直接复用 loop 调度器的实现。** 否决：loop 调度的是一个完整解析好的批次，并按模型顺序提交结果；桥接层调度的则是一条开放式的提交流，其结果返回给程序，而不是进入 transcript（文本记录）。因此两者共享的只是*契约*（分类、池、屏障），而不是实现机制。
+
+## 后果
+
+程序不需要任何新的模型侧 API，独立读取就获得了原生级的延迟：`Promise.all` 直接变得更好用，提示词指引也随之修改。web UI 实时显示每个子调用的运行指示环：fixture（测试前置数据）发出成对的 start/settle 事件；jsdom 锁定运行中形状；运行时 spec 锁定原位结算、乱序完成与 callTime 配对。PR6（trajectory/waterfall 的 span）现在可以依据这对事件的计时绘制如实的 span。spill PR（下一个）则继承结算事件，作为自己唯一施加边界的位置。
@@ -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
-2026-06-17-ts-build-config.md: 17036438b83a77f72b49f55abf29632af3f4ffef
-2026-06-17-ts-build-config.zh.md: 70e49c61deba418894a48be3016898d1d85c78a0
+2026-06-17-ts-build-config.md: 5bdfc5e170f12cd95a68f443ab8d02b16db554f3
+2026-06-17-ts-build-config.zh.md: 9f74fb6be9c8e00a070e27a609edf8421a2b5ca6
@@ -43,7 +43,7 @@ In-package relative imports use explicit `.ts` specifiers.
 - Referenced package/vendor projects keep the same emit behavior as build, so typecheck refreshes their `lib/types` outputs instead of using a separate no-emit graph. Project-specific strictness changes live in the owning `packages/*/*/tsconfig.json` or `vendor/*/tsconfig.json`.
 - The no-emit aggregates disable `rewriteRelativeImportExtensions`; they emit nothing and include tests that import helpers across project-reference boundaries. Package/vendor emit projects keep the rewrite enabled.

-Composite projects keep their incremental build information inside their project-local `lib/` output. `pnpm run clean` derives live output directories from the root TypeScript project-reference graph, removes legacy root build information, and removes deleted `packages/*/*` directories that contain only known generated residue. It preserves `node_modules` for every package that still has a `package.json`, and refuses to remove a manifest-less directory containing unknown files. Build does not invoke clean automatically, so ordinary builds retain incremental state.
+Composite projects keep their incremental build information inside their project-local `lib/` output. `pnpm run clean` derives live output directories from the root TypeScript project-reference graph, removes legacy root build information, and removes deleted `packages/*/*` directories that contain only known generated residue. Before removing an existing target, it resolves the target's parent and refuses it if that resolved parent is outside the repository, so a symlinked project reference cannot redirect cleanup outside the checkout. It preserves `node_modules` for every package that still has a `package.json`, and refuses to remove a manifest-less directory containing unknown files. Build does not invoke clean automatically, so ordinary builds retain incremental state.

 The command orchestration shape is:

@@ -43,7 +43,7 @@ Status: implemented
 - 被引用的包/vendor 项目保持与构建相同的输出行为，因此类型检查会刷新它们的 `lib/types` 输出，而无需使用独立的 no-emit 图。项目特定的严格度变更放在各自的 `packages/*/*/tsconfig.json` 或 `vendor/*/tsconfig.json` 中。
 - 两个 no-emit 聚合禁用 `rewriteRelativeImportExtensions`；它们不输出任何文件，且包含跨 project-reference 边界导入 helper 的测试。包/vendor 的 emit 项目保持重写开启。

-复合项目将增量构建信息保存在各项目本地的 `lib/` 输出中。`pnpm run clean` 会根据根 TypeScript project-reference 图确定当前有效的输出目录，删除遗留的根目录构建信息，并删除已删除包留下且仅包含已知生成残留的 `packages/*/*` 目录。对于仍有 `package.json` 的每个包，该命令都会保留 `node_modules`；如果不含 `package.json` 的目录中存在未知文件，则拒绝删除。构建不会自动调用 clean，因此常规构建会保留增量状态。
+复合项目将增量构建信息保存在各项目本地的 `lib/` 输出中。`pnpm run clean` 会根据根 TypeScript project-reference 图确定当前有效的输出目录，删除遗留的根目录构建信息，并删除已删除包留下且仅包含已知生成残留的 `packages/*/*` 目录。在删除现有目标前，该命令会解析目标父目录的真实路径；如果解析后的父目录位于仓库之外，则拒绝删除，防止使用符号链接的 project reference 将清理操作重定向到工作副本之外。对于仍有 `package.json` 的每个包，该命令都会保留 `node_modules`；如果不含 `package.json` 的目录中存在未知文件，则拒绝删除。构建不会自动调用 clean，因此常规构建会保留增量状态。

 命令编排结构如下：

@@ -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
+2026-07-26-incremental-pr-base-retargeting.md: e2097ac4c32a926c8c0271df19dbc9796d0ed19d
+2026-07-26-incremental-pr-base-retargeting.zh.md: a6c94b66732b6c037fee1b0726b31ecb6f3b48c5
@@ -0,0 +1,27 @@
+# Agent Note: Retarget PR bases incrementally
+
+Status: implemented
+
+English | [中文](2026-07-26-incremental-pr-base-retargeting.zh.md)
+
+## Problem
+
+A PR base can advance while its current tip is being merged into the PR branch. Restarting from the newer tip discards completed conflict resolution and validation. Rewriting a merge that is already pushed also erases reviewable history.
+
+## Decision
+
+Each observed base tip gets its own merge checkpoint. If the base advances during the work, finish and validate the merge already in progress, commit it, and push it when the task authorizes a push. Only then fetch and merge the newer base in a separate merge commit. Never abandon, amend, rebase, or otherwise rewrite the earlier work.
+
+The root [AGENTS.md](../../../../AGENTS.md) states the standing order. The [stacked-PR landing skill](../../../skills/dsh-merging-stacked-prs/SKILL.md) applies it while retargeting dependent PRs, and the [stack review guide](../../../../docs/cookbook/responding-to-pr-review-on-a-stack.md) owns merging fixes down a stack.
+
+## Alternatives considered
+
+**Abort and restart from the newest base.** This discards resolved conflicts and completed validation, repeats work, and removes a useful recovery point.
+
+**Fold both base tips into one rewritten merge.** This hides the order in which conflicts were resolved and requires rewriting remote history if the first merge was pushed.
+
+## Consequences
+
+- A PR can carry several base-merge commits when its base advances repeatedly.
+- Completed work remains reviewable and recoverable instead of being discarded.
+- Merging a newer base changes the combined tree, so the relevant checks run again before the next push.
@@ -0,0 +1,27 @@
+# Agent Note: 增量更新 PR 的 base 分支
+
+Status: implemented
+
+[English](2026-07-26-incremental-pr-base-retargeting.md) | 中文
+
+## 问题
+
+将 PR（Pull Request）的 base 分支当前顶端提交合入 PR 分支的过程中，base 分支可能继续前移。若改从新的顶端提交重新开始，就会丢弃已经完成的冲突解决和验证工作。重写已经推送的合并还会抹去可供评审的历史记录。
+
+## 决策
+
+每次观察到的 base 分支顶端提交都保留为独立的合并检查点。如果处理期间 base 分支继续前移，先完成并验证正在进行的合并，再将其提交；任务授权推送时，还要完成推送。完成这些步骤后，才能拉取较新的 base，并通过单独的合并提交将其合入。绝不放弃先前工作，也不通过 amend、rebase 或其他方式重写它。
+
+根 [AGENTS.md](../../../../AGENTS.md) 规定了这项常设指令。[堆叠 PR 落地 skill（技能）](../../../skills/dsh-merging-stacked-prs/SKILL.md)在调整依赖 PR 的 base 时执行这一规则，[堆叠评审指南](../../../../docs/cookbook/responding-to-pr-review-on-a-stack.md)则负责说明如何将修复沿堆叠向下合并。
+
+## 曾考虑的替代方案
+
+**中止当前工作，改从最新 base 重新开始。** 这会丢弃已经解决的冲突和完成的验证，重复劳动，并失去一个有用的恢复点。
+
+**重写为一次同时包含两个 base 分支顶端的合并。** 这会掩盖冲突解决的顺序；如果第一次合并已经推送，还必须重写远程历史。
+
+## 后果
+
+- PR 的 base 多次前移时，这个 PR 可以包含多个用于合并 base 的提交。
+- 已完成的工作不会被丢弃，而是保持可供评审和恢复。
+- 合入较新的 base 会改变合并后的文件树，因此相关检查会在下一次推送前重新运行。
@@ -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
-2026-07-24-web-gui-browser-e2e-lane.md: fb870c4bb2c85d8be7ac11f9f29f05bf24f446a4
-2026-07-24-web-gui-browser-e2e-lane.zh.md: c43e526d27fd4d8cf4f774e8a03480930682041d
+2026-07-24-web-gui-browser-e2e-lane.md: c4e34b3f44162c7021cb25681eea7e49ac78f672
+2026-07-24-web-gui-browser-e2e-lane.zh.md: 466e1c0fc16aac21b87b68cfedaec4fb22a417e2
@@ -10,7 +10,7 @@ The web GUI ships as a real assembled chain — chromium page → client plugin

 ## Decision

-`pnpm run test:web` carries a keyless, deterministic browser e2e lane under `apps/web/tests/`: recorded session-log fixtures replayed through `@deepseek-ai/dsh-llm-replay` against the real in-process web composition, asserting a normalized conversation aria golden plus in-process world state. No new package; the product deltas are two additive `dsh-llm-replay` surfaces (`paceMs`, `ReplayHandle`).
+`pnpm run test:web` carries a keyless, deterministic browser e2e lane under `apps/web/tests/`: recorded session-log fixtures replay through `@deepseek-ai/dsh-llm-replay` against the real in-process web composition, with normalized aria goldens for user-visible states and in-process assertions for durable world state. The supporting product contracts are `dsh-llm-replay` pacing, consumption checks, and validated indexed override patches; cross-package `dsh-llm` failures retain validated provider facts through own data properties; and the shipped web composition mounts `llm-retry` for transient model failures.

 ### Scaffold: `apps/web/tests/scaffold.ts`

@@ -32,18 +32,17 @@ Every scenario fails on any pageerror and on the client's connection-loss/gap-re

 ### Expected outputs

-One committed golden per scenario: a normalized `ariaSnapshot()` of the conversation region (`ui.expected.md`) — uuid/cwd/workspace-basename/duration tokens normalized, captured poll-until-equal at the settled milestone — plus a few role/text anchor assertions that stay green under a semantics-preserving component rewrite while the golden churns reviewably. The aria tree is the mechanization of the client rule "assert what the user would see, never class names". World-state assertions ride root-context session events inline (which tool call produced which durable result, whether `turn/end` completed) instead of a second committed log golden: the persisted-log surface is pinned by the ACP/headless/TUI suites through the same loop and persistence, and re-pinning it here would double refresh cost against the tier discipline. `refresh` is the sole golden writer — a missing golden in replay mode fails with the healing command rather than self-bootstrapping.
+Scenarios with a stable owning region commit a normalized `ariaSnapshot()` for each distinct user-visible state; cross-region workspace-management states instead use semantic DOM assertions plus authoritative host-state checks. UUID, cwd, workspace basename, and duration volatility collapse to stable tokens; captures poll until consecutive normalized reads agree. Role and text anchors remain semantic guards around the reviewable goldens and own cross-region states directly. World-state assertions use root-context session events rather than a second committed log golden because the ACP, headless, and TUI suites already pin the persisted-log surface through the same loop and persistence. `refresh` is the sole golden writer; a missing replay golden fails with the regeneration command.

-The typecheck plane split is structural: the three files that boot the host spine (`scaffold`, `replay-round-trip.e2e`, and `seeded-history.e2e`) are excluded from the client-registered `apps/web` project. Those files and their shared `support.ts` are included file-by-file in `tsconfig.host.json` — one program cannot hold both sides of the cordis `Context` merges.
+The typecheck plane split is structural: the host scaffold, its support module, and every web spec that boots or inspects the host composition are excluded from the client-registered `apps/web` project and included file-by-file in `tsconfig.host.json`. One program cannot hold both sides of the Cordis `Context` merges.

 ### Modes and fixtures

-`DSH_SNAPSHOT` selects replay (default, keyless), record (with key), or refresh (keyless) as inline spec branches — the TUI shape, not a suite factory: at two scenarios the acp-snapshot factory machinery has no owner, and the genuinely shared parts are already exported (`scrubRequestHeaders`, `parseSessionLog`, `installLlmReplay`). Each spec splits into drive steps (type, send, `whenTurnSettled` — run in all modes, never waiting on model-content selectors, so record cannot hang on a live model answering differently) and assertion steps (replay/refresh only). Record = drive live through the real composer + harvest the in-memory `session.header`/`session.events` (the TUI `rawSessionLog` shape — no file decompression) + `scrubRequestHeaders` + `{{sessionId}}`/`{{cwd}}`/`{{rpcId}}` tokenization; a follow-up keyless refresh regenerates `ui.expected.md`. Both scenarios' fixtures were recorded against this assembly through this flow. A drift guard ties each spec's drive prompt to the fixture's recorded `user/message`. A fixture-inventory guard holds each scenario directory closed (exact file set, every JSONL a scrub fixed-point with no run-local `rpcId`). Web fixtures scrub headers everywhere and pin no header class, following the TUI precedent over the strict [pinned-header](2026-07-06-pin-request-header-content-in-one-scenario.md) reading — see Deferred.
+`DSH_SNAPSHOT` selects replay (default, keyless), record (with key), or refresh (keyless). Prompting specs separate drive steps shared by all modes from replay/refresh assertions; record mode drives the live composer, harvests the in-memory session header and events, scrubs request headers, and tokenizes run-local session, cwd, and RPC identities. A follow-up keyless refresh regenerates aria goldens. Each prompt is checked against its fixture's recorded `user/message`, and each scenario directory has a closed inventory whose JSONL files are scrub fixed points. Web fixtures scrub headers everywhere and pin no header class; see Deferred.

-### Scenarios
+### Coverage contract

-1. **`replay-round-trip`** — new session, prompt through the real composer, replay streams reasoning + a `bash` tool call that really executes in the temp workspace + final text (paced 15ms). Asserts settled markdown, the aria golden, and inline world state (the bash call's durable result is exactly `WEB_E2E_OK\n`, completed `turn/end`, >10 chunk events).
-2. **`seeded-history`** — a recorded session seeded cold; the sidebar lists it (group row → session row, collapsed by default), opening renders tool cards and text purely from the log through the implicit cold-resume attach inside `session.history` — zero model calls in replay, so no binding constraints; record mode drives the same turn live (real `read` tool against seeded workspace files) to produce the seed.
+The lane covers three behavior families. Live-turn scenarios pin ordinary tool execution, cancellation, non-retryable failure, transient retry, resident questions, and mid-turn steering; synchronization uses durable events, `whenIdle()`, or an explicit replay marker rather than delays. Cold-history scenarios seed through the real persistence API and cover history rendering, sidebar search, trajectory and waterfall views, and tool details without model calls. Browser-lifecycle scenarios cover first-send workspace materialization, reload recovery, layout persistence, theme and locale preferences, and workspace create/rename/view operations. Each family asserts the browser surface and the authoritative host state; a stray model call or under-consumed fixture fails teardown.

 ### CI stance

@@ -63,7 +62,7 @@ Surveyed AI-chat/agent web UIs and mocking layers (LibreChat, vercel/ai-chatbot

 **Placeholder `DEEPSEEK_API_KEY` + replay interception instead of disabling the adapter row.** Rejected despite zero composition change and two in-tree precedents: it satisfies `llm-deepseek`'s fail-loud key check with a lie and leaves a dead adapter mounted-but-intercepted; the disabled row (the ACP overlay's move) is honest keylessness and fails loud at the earliest resolvable point.

-**A `packages/support/web-snapshot` package with a `defineWebSnapshotSuite` factory.** Rejected: chromium-driving source cannot honestly hold per-file 100% coverage on browserless coverage runners, and at two scenarios a factory generalizes from one consumer while the genuinely shared logic is already exported from gated packages. Re-entry trigger: a second web-shaped consumer or ≥6 scenarios with demonstrably drifting inline branches; the package boundary would then be drawn browser-free.
+**A `packages/support/web-snapshot` package with a `defineWebSnapshotSuite` factory.** Rejected: chromium-driving source cannot honestly hold per-file 100% coverage on browserless coverage runners, and the scenario-specific interactions have not produced a stable browser-free contract beyond the helpers already exported from gated packages and the local scaffold. Reconsider when a second web-shaped consumer or demonstrably repeated lifecycle code establishes that contract.

 **A committed normalized-session-log golden as a second expected surface.** Rejected: the log surface is pinned by the ACP/headless/TUI suites through the same loop and persistence; here it would double refresh cost and re-test lower tiers. Inline world-state assertions on root-context events keep the world-verification duty.

@@ -73,17 +72,20 @@ Surveyed AI-chat/agent web UIs and mocking layers (LibreChat, vercel/ai-chatbot

 **Real-model browser tests as the keyless lane.** Rejected: nondeterministic by construction; the surveyed cautionary case (open-webui) grew unbounded timeouts and was deleted. The with-key W5 smoke stays as the live-model complement.

-**A client `data-dsh-busy` settled signal.** Deferred: the multi-condition settled polls proved sufficient at two scenarios and the host-side `whenIdle` barrier does the heavy lifting. Re-entry trigger: the first settled-poll flake, or a scenario needing a state the DOM does not expose.
+**A client `data-dsh-busy` settled signal.** Deferred: the host-side `whenIdle` barrier plus stable DOM polls cover the current scenarios. Reconsider after the first settled-poll flake or when a required state is not observable in the DOM.

 ## Testing

-The lane itself: `pnpm run test:web` runs both scenarios keylessly alongside the existing smoke pair; `DSH_SNAPSHOT=record pnpm exec vitest run --config vitest.web.config.ts apps/web/tests/<spec>` re-records a scenario's fixture against the live model; `DSH_SNAPSHOT=refresh` rewrites both aria goldens keylessly. `paceMs` validation, pacing floor, abort-during-pace, and both `assertConsumed` failure shapes are pinned in `packages/support/llm-replay/tests/llm-replay.spec.ts`.
+`pnpm run test:web` runs the lane keylessly. `DSH_SNAPSHOT=record pnpm exec vitest run --config vitest.web.config.ts apps/web/tests/<spec>` records a prompting scenario against the live model, and `DSH_SNAPSHOT=refresh` rewrites aria goldens keylessly. `dsh-llm-replay` unit coverage pins pacing, cancellation, consumption diagnostics, sidecar validation, indexed replacement, and the single append position.

 ## Deferred

 - **Web header-class pin**: web fixtures tokenize `{{system}}`/`{{tools}}` everywhere and no scenario pins the web composition's prompt/tool schemas (`TODO(web-header-pin)` — the scaffold `recordFixture` JSDoc marks it). Following the TUI scrub-everywhere precedent; revisit when the web assembly's header diverges from the repl composition it mirrors.
 - **CI browser provisioning**: reversal of the no-browser-in-CI ruling, staged criteria above (`TODO(ci-browser)`).
 - **Follow-up-prompt-after-resume scenario**: the history/live stitch path over the real wire; add as its own scenario when that code changes or regresses.
+- **Web error surface**: the client consumes no `agent/error` frames and a pre-chunk failure freezes no partial, so a non-retryable provider failure renders no error copy — the user sees the send simply stop. The AUTH scenario pins the current contract (no crash, composer recovers, turn logged `error`) and `FIXME(web-error-surface)` marks where visible error text gets asserted once the UI grows an error rendering.
+- **Composer steering gesture**: the input locks while running (stop-or-wait), so the steering scenario steers over the wire from the page; `TODO(web-steer-composer)` upgrades the drive step to a real composer gesture when the product grows one.
+- **Drag session reorder**: `workspace.insertSessionBefore` has no browser scenario; it needs two sessions materialized in one workspace plus synthesized HTML5 drag events. Add it when that surface changes or regresses. The inert session Rename/Fork/Delete and workspace Delete menu rows get scenarios when they gain behavior.

 ## Consequences

@@ -10,7 +10,7 @@ Web GUI 以一条真实组装链交付——chromium 页面 → client 插件 bu

 ## 决策

-`pnpm run test:web` 携带 `apps/web/tests/` 下的无密钥、确定性浏览器 e2e 车道：录制的会话日志 fixture 经 `@deepseek-ai/dsh-llm-replay` 对真实进程内 web 组合回放，断言规范化后的会话区 aria 预期输出加进程内世界状态。不新增包（package）；产品侧增量只有 `dsh-llm-replay` 的两处增量接口（`paceMs`、`ReplayHandle`）。
+`pnpm run test:web` 携带 `apps/web/tests/` 下的无密钥、确定性浏览器 e2e 车道：录制的会话日志 fixture 经 `@deepseek-ai/dsh-llm-replay` 对真实进程内 web 组合回放；用户可见状态使用规范化的 aria 预期输出，持久世界状态则使用进程内断言。配套的产品契约包括 `dsh-llm-replay` 的节奏控制、消费检查与已校验的索引式覆写 patch；跨包的 `dsh-llm` 失败通过自有数据属性保留经校验的提供方信息；已交付的 web 组合挂载 `llm-retry`，以处理瞬态模型失败。

 ### Scaffold：`apps/web/tests/scaffold.ts`

@@ -32,18 +32,17 @@ Web GUI 以一条真实组装链交付——chromium 页面 → client 插件 bu

 ### 预期输出

-每场景一份提交的预期输出：会话区规范化 `ariaSnapshot()`（`ui.expected.md`）——uuid/cwd/工作区目录名/时长归一为稳定 token，在安定里程碑处轮询至两次相等再采集——外加几条 role/文本锚断言，让保语义的组件重写在预期输出可评审地变动时仍保持绿色锚点。aria 树是 client 规则「断言用户所见，绝不断言类名」的机械化。世界状态断言内联在根上下文的会话事件上（哪次工具调用产生了哪项已持久化的工具结果、`turn/end` 是否完成）而不是第二份提交的日志预期输出：持久化日志表面已由 ACP/headless/TUI 套件经同一循环和持久化钉住，在此重复钉住会违背分层纪律、翻倍刷新成本。`refresh` 是预期输出的唯一写入者——回放模式下预期输出缺失会连同修复命令一起报错，而不是静默自举。
+具有稳定所属区域的场景会为每个不同的用户可见状态提交一份规范化的 `ariaSnapshot()`；跨区域的工作区管理状态则使用语义 DOM 断言和权威的 host 状态检查。UUID、cwd、工作区目录名与时长等易变内容会归一为稳定 token；采集过程持续轮询，直到连续两次规范化读取结果相同。Role 与文本锚点继续充当可评审预期输出周围的语义防线，并直接覆盖跨区域状态。世界状态断言使用根上下文的会话事件，而不是第二份提交的日志预期输出，因为 ACP、headless 与 TUI 套件已经通过同一循环和持久化钉住持久化日志表面。`refresh` 是预期输出的唯一写入者；回放模式下缺少预期输出时，测试会连同重新生成命令一起失败。

-类型检查平面切分是结构性的：启动 host 主干的三个文件（`scaffold`、`replay-round-trip.e2e` 和 `seeded-history.e2e`）被排除出注册在 client 侧的 `apps/web` 工程。这三个文件及其共享的 `support.ts` 逐文件纳入 `tsconfig.host.json`——一个程序不能同时持有 cordis `Context` 合并的两侧。
+类型检查平面切分是结构性的：host scaffold、其支持模块，以及每个启动或检查 host 组合的 web spec 都会从注册在 client 侧的 `apps/web` 工程中排除，并逐文件纳入 `tsconfig.host.json`。一个程序不能同时持有 Cordis `Context` 合并的两侧。

 ### 模式与 fixture

-`DSH_SNAPSHOT` 以内联 spec 分支选择 replay（默认，无密钥）、record（带密钥）或 refresh（无密钥）——TUI 的形态，不是套件工厂：两个场景撑不起 acp-snapshot 工厂机制，且真正共享的部分已被导出（`scrubRequestHeaders`、`parseSessionLog`、`installLlmReplay`）。每个 spec 切分为驱动步骤（输入、发送、`whenTurnSettled`——所有模式都执行，绝不等待模型内容选择器，因此 record 不会因真实模型答法不同而挂起）与断言步骤（仅 replay/refresh）。Record = 经真实输入框实时驱动 + 采收内存中的 `session.header`/`session.events`（TUI 的 `rawSessionLog` 形态——无需文件解压）+ `scrubRequestHeaders` + `{{sessionId}}`/`{{cwd}}`/`{{rpcId}}` token 化；随后一次无密钥 refresh 重新生成 `ui.expected.md`。两个场景的 fixture 都经此流程对本组装录制。一条漂移防线把每个 spec 的驱动提示词与 fixture 录制的 `user/message` 绑定。fixture 清单防线保持每个场景目录封闭（精确文件集合，每个 JSONL 都是脱敏不动点，不含当次运行的 `rpcId`）。Web fixture 全部脱敏请求头且不钉任何头类别，沿用 TUI 先例而非[钉住请求头](2026-07-06-pin-request-header-content-in-one-scenario.md)的严格读法——见「暂缓」。
+`DSH_SNAPSHOT` 选择 replay（默认，无密钥）、record（带密钥）或 refresh（无密钥）。发起提示的 spec 将所有模式共用的驱动步骤与仅供 replay/refresh 使用的断言分开；record 模式驱动真实输入框，采收内存中的会话 header 与事件，脱敏请求头，并 token 化当次运行的会话、cwd 与 RPC 标识。随后一次无密钥 refresh 重新生成 aria 预期输出。每条提示词都会与 fixture 中录制的 `user/message` 核对；每个场景目录都采用封闭清单，其中每个 JSONL 都是脱敏不动点。Web fixture 全部脱敏请求头且不钉任何 header 类别；见「暂缓」。

-### 场景
+### 覆盖契约

-1. **`replay-round-trip`**——新会话，经真实输入框发送提示词，回放流式输出推理（reasoning）+ 一次在临时工作区真实执行的 `bash` 工具调用 + 最终文本（15ms 节奏）。断言安定后的 markdown、aria 预期输出与内联世界状态（这次 bash 调用的已持久化工具结果严格等于 `WEB_E2E_OK\n`、完成的 `turn/end`、>10 个分片事件）。
-2. **`seeded-history`**——冷播种一份已录会话；侧栏列出它（分组行 → 会话行，默认折叠），打开后纯凭日志经 `session.history` 内的隐式冷恢复挂载渲染工具卡片与文本——replay 下零模型调用，因此没有任何绑定约束；record 模式实时驱动同一轮（真实 `read` 工具读取播种的工作区文件）来产出种子。
+该车道覆盖三类行为。实时轮次场景钉住普通工具执行、取消、不可重试失败、瞬态重试、常驻提问与轮次中途 steering；同步依赖持久事件、`whenIdle()` 或显式回放标记，而不使用延时。冷历史场景通过真实持久化 API 播种，在不调用模型的情况下覆盖历史渲染、侧栏搜索、Trajectory 与 Waterfall 视图及工具详情。浏览器生命周期场景覆盖首次发送时物化工作区、重新加载恢复、布局持久化、主题与语言偏好，以及工作区的创建、重命名和视图操作。每类场景都断言浏览器表面和权威的 host 状态；离群的模型调用或未耗尽的 fixture 会使拆卸失败。

 ### CI 立场

@@ -63,7 +62,7 @@ Web GUI 以一条真实组装链交付——chromium 页面 → client 插件 bu

 **用占位 `DEEPSEEK_API_KEY` + 回放拦截替代禁用适配器行。** 尽管零组合改动且树内有两处先例仍被否决：它用谎言满足 `llm-deepseek` 的快速失败密钥检查，还留下一个挂载却被拦截的死适配器；禁用行（ACP overlay 的同款做法）是诚实的无密钥，并在最早可解析点快速失败。

-**`packages/support/web-snapshot` 包 + `defineWebSnapshotSuite` 工厂。** 已否决：驱动 chromium 的源码在无浏览器的覆盖率 runner 上无法诚实保持逐文件 100%，且两个场景就上工厂是从单一消费方过度泛化，真正共享的逻辑已从受门禁的包中导出。重启条件：出现第二个 web 形态消费方，或 ≥6 个场景的内联分支被证实各自漂移；届时包边界将画在无浏览器一侧。
+**`packages/support/web-snapshot` 包 + `defineWebSnapshotSuite` 工厂。** 已否决：驱动 chromium 的源码在无浏览器的覆盖率 runner 上无法诚实保持逐文件 100%，且除受门禁的包已导出的辅助工具与本地 scaffold 外，这些场景专用交互尚未形成稳定的无浏览器契约。出现第二个 web 形态消费方，或被证实重复的生命周期代码确立该契约后，再重新考虑。

 **第二份提交的规范化会话日志预期输出。** 已否决：日志表面已由 ACP/headless/TUI 套件经同一循环与持久化钉住；在此只会翻倍刷新成本并重复测试下层。内联在根上下文事件上的世界状态断言保住了验证世界的义务。

@@ -73,17 +72,20 @@ Web GUI 以一条真实组装链交付——chromium 页面 → client 插件 bu

 **以真实模型浏览器测试充当无密钥车道。** 已否决：按构造即不确定；被调研的前车之鉴（open-webui）长出无界超时后被删除。带密钥的 W5 冒烟仍是真实模型侧的补充。

-**客户端 `data-dsh-busy` 安定信号。** 暂缓：两个场景下多条件安定轮询已经够用，host 侧 `whenIdle` 屏障承担了重活。重启条件：第一次安定轮询抖动，或某场景需要等待 DOM 不暴露的状态。
+**客户端 `data-dsh-busy` 安定信号。** 暂缓：host 侧 `whenIdle` 屏障配合稳定 DOM 轮询，足以覆盖当前场景。第一次安定轮询抖动，或必要状态在 DOM 中不可观察时，再重新考虑。

 ## Testing

-车道自身：`pnpm run test:web` 与既有冒烟对一起无密钥运行两个场景；`DSH_SNAPSHOT=record pnpm exec vitest run --config vitest.web.config.ts apps/web/tests/<spec>` 对真实模型重录某场景的 fixture；`DSH_SNAPSHOT=refresh` 无密钥重写两份 aria 预期输出。`paceMs` 校验、节奏下限、节奏中中止、`assertConsumed` 的两种失败形态钉在 `packages/support/llm-replay/tests/llm-replay.spec.ts`。
+`pnpm run test:web` 无密钥运行该车道。`DSH_SNAPSHOT=record pnpm exec vitest run --config vitest.web.config.ts apps/web/tests/<spec>` 对真实模型录制一个发起提示的场景，`DSH_SNAPSHOT=refresh` 则无密钥重写 aria 预期输出。`dsh-llm-replay` 单元覆盖率钉住节奏控制、取消、消费诊断、sidecar 校验、按索引替换与唯一的追加位置。

 ## 暂缓

 - **Web 头类别钉住**：web fixture 处处 token 化 `{{system}}`/`{{tools}}`，没有场景钉住 web 组合的提示词/工具 schema（`TODO(web-header-pin)`——scaffold 的 `recordFixture` JSDoc 有标记）。沿用 TUI 处处脱敏先例；当 web 组装的请求头与其镜像的 repl 组合进一步分叉时重审。
 - **CI 浏览器供给**：推翻 CI 无浏览器裁定，分阶段标准见上（`TODO(ci-browser)`）。
 - **恢复后追问场景**：真实 wire 上的历史/实时缝合路径；当该代码变更或回归时作为独立场景补充。
+- **Web 错误表面**：客户端不消费任何 `agent/error` 帧，分片前的失败也没有可冻结的部分输出，因此不可重试的提供方失败不渲染任何错误文案——用户看到的只是发送就此停住。AUTH 场景钉住当前契约（不崩溃、输入框恢复可用、轮次记录为 `error`），`FIXME(web-error-surface)` 标记了待 UI 长出错误渲染后断言可见错误文本的位置。
+- **输入框 steering 手势**：输入在运行期间锁定（只能停止或等待），因此 steering 场景从页面走 wire 做 steer；`TODO(web-steer-composer)` 待产品长出真实的输入框手势后，把驱动步骤升级为该手势。
+- **拖拽会话重排**：`workspace.insertSessionBefore` 尚无浏览器场景；它需要在同一个工作区里物化两个会话，并合成 HTML5 拖拽事件。当该表面变更或回归时再补充。无行为的会话 Rename/Fork/Delete 和工作区 Delete 菜单行待获得行为后再补充场景。

 ## 后果

@@ -20,6 +20,7 @@ Given `A ← B ← C` landing on `master`:
 2. **Retarget PR B, refresh it, then merge it — keeping its branch.**
   - `gh pr edit B --base master` (now that A is in master, B's base becomes master).
   - Merge the new master *into* branch B: check out B, `git fetch origin`, `git merge origin/master` — merge `origin/master`, not local `master`, because `gh pr merge` updated only GitHub and the local branch is stale — resolve any conflicts here, and push. This makes B current and surfaces conflicts in the working branch where they can be tested — not as a surprise at the GitHub merge.
+   - If `origin/master` moves during that work, finish and push the in-progress merge, then fetch and merge the newer tip in a separate commit. Never abandon or rewrite the earlier work ([rationale](../../notes/implemented/process/2026-07-26-incremental-pr-base-retargeting.md)).
   - `gh pr merge B --merge` — still no `--delete-branch` (PR C bases on branch B).

 3. **Retarget PR C, refresh it, then merge it — keeping its branch.** Same steps: `gh pr edit C --base master`, fetch and merge `origin/master` into branch C, resolve conflicts there and push, then `gh pr merge C --merge` without `--delete-branch`.
@@ -111,8 +111,8 @@ Real-API tests and demos read `DEEPSEEK_API_KEY`, optional `DEEPSEEK_BASE_URL`,
 - **Testing policy** — [docs/testing.md](docs/testing.md). Every non-trivial model- or product-user-visible behavior change adds or updates a keyless snapshot through a real runnable example in the same PR; package tests, e2e-only assertions, and mock-only fixtures do not substitute for the assembled application transcript. Fixtures must replay on macOS/Linux; fix fixtures, not normalizers.
 - **A tool's UI render intent is part of its design**, decided up front (`generic`/`terminal`/`diff`, `locations`); presentation methods are pure functions of `args` ([cookbook](docs/cookbook/adding-a-tool.md)).
 - **Plan unit, e2e, and snapshot coverage** for new seams, lifecycle shapes, and transcript surfaces; missing snapshot-harness support is part of the implementation, not deferred follow-up.
- **Keep PRs coherent; use merge commits.** Split independent features or design decisions when combining them obscures ownership, intent, or verification. Never squash, rebase, or rewrite pushed branches; fix the introducing PR, then merge down its stack ([guide](docs/cookbook/responding-to-pr-review-on-a-stack.md)).
- **Label PRs:** exactly one kind (`feature`/`bug-fix`/`doc`/`testing`/`cleanup`), all matching areas; the [taxonomy](.agents/notes/implemented/process/2026-07-25-semantic-pr-label-taxonomy.md) remains extensible for recurring distinctions.
+- **Use incremental merge commits.** Split independent changes; never squash, rebase, or rewrite pushed history. Fix the introducing PR before merging down-stack. If the base advances mid-merge, never restart: finish the checkpoint, push when authorized, then merge the newer tip separately ([rationale](.agents/notes/implemented/process/2026-07-26-incremental-pr-base-retargeting.md)).
+- **Label PRs:** one kind (`feature`/`bug-fix`/`doc`/`testing`/`cleanup`), each matching area; the [taxonomy](.agents/notes/implemented/process/2026-07-25-semantic-pr-label-taxonomy.md) is extensible.
 - TODO markers: `FIXME`/`TODO`/`XXX` by urgency ([semantics](docs/development.md)).
 - Files end with exactly one trailing newline; `git diff --cached --check` (pre-commit) gates it.

@@ -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
-README.md: 83b60ea72580facbceb155d053223567fdc8446b
-README.zh.md: ca25547f4c5ed2627e692187e6ca9e947f1b3eac
+README.md: 42d2a9641cf5d497c9aae45d9f60fce4498addb9
+README.zh.md: 0a62f8bb72e2cf2dbe045d28b81768bf4df800de
@@ -16,6 +16,8 @@ The TUI surface:

 The Web and headless surfaces boot one shared composition (`cordis.yml`): both treat the invoking directory as the default project and Workspace root, create named Workspaces beneath that root unless `--workspace-root <path>` overrides it, load applicable `AGENTS.md`/`CLAUDE.md` instructions into each agent-loop request prefix with a 65,536-byte render budget, and opt into first-message model titles. Headless differs only in listening on an OS-assigned port (parallel `dsh -p` runs never collide; the stderr-printed URL opens the live session in a browser). Both need the frontend dist and client bundles built (`pnpm run build && pnpm run build:web`).

+`DSH_TOOLS_MODE` selects the tool presentation mode for the whole Web/headless process: `native` (the schema default when unset), `code` (the `run_code`-only Code Mode wire), or `both`; any other value fails loud at boot through the `dsh-tools` config schema. It is a TEMPORARY seam — process-wide because Loader composition is static — and is removed once the web UI owns per-session tool-mode selection; the TUI surface ignores it (its config tree pins its own mode).
+
 ## Install (developer machine)

 Symlink the source-running launcher onto your PATH; it resolves the checkout through its own real path, so code changes apply on the next launch with no build step:
@@ -16,6 +16,8 @@ TUI 界面：

 Web 和无头界面启动同一个共享组合（`cordis.yml`）：两者都将调用目录视为默认项目和 Workspace 根目录，除非通过 `--workspace-root <path>` 覆盖，否则会在该根目录下创建具名 Workspace；它们会把适用的 `AGENTS.md`/`CLAUDE.md` 指令加载到每个 agent-loop 请求前缀中，渲染预算为 65,536 字节，并选用首条消息模型标题。无头界面唯一的差异是监听操作系统分配的端口（并行 `dsh -p` 运行绝不冲突；stderr 打印的 URL 会在浏览器中打开实时会话）。两者都需要先构建前端 dist 和客户端 bundle（`pnpm run build && pnpm run build:web`）。

+`DSH_TOOLS_MODE` 为整个 Web／无头进程选择工具呈现模式：可选值为 `native`（未设置时的 schema 默认值）、`code`（仅含 `run_code` 的 Code Mode 协议接口）或 `both`；任何其他值都会经由 `dsh-tools` 配置 schema 在启动时明确报错。它是一个临时 seam：Loader 组合是静态的，因此该设置作用于整个进程；待 Web UI 负责逐会话工具模式选择后便会移除。TUI 界面会忽略该变量（其配置树固定了自身模式）。
+
 ## 安装（开发机）

 将从源码运行的启动器符号链接到 PATH 上；它通过自身真实路径解析 checkout，因此代码更改会在下次启动时生效，无需构建：
@@ -44,6 +44,18 @@

 - id: tools
  name: '@deepseek-ai/dsh-tools'
+  config:
+    # TEMPORARY workaround: DSH_TOOLS_MODE (native|code|both) opts a whole dsh
+    # process into Code Mode while per-session tool-mode selection is being
+    # designed; unset keeps the schema default (native). Remove the env seam
+    # once the web UI owns the choice per session.
+    mode: !!js process.env.DSH_TOOLS_MODE
+
+# Code Mode substrate for the row above. Mounted unconditionally because
+# Loader metadata is static (no conditional rows): a native-mode boot only
+# registers the service — a worker thread spawns per run_code execution.
+- id: code-runtime
+  name: '@deepseek-ai/dsh-code-runtime-worker'

 - id: user-interaction
  name: '@deepseek-ai/dsh-user-interaction'
@@ -67,6 +79,11 @@
    apiKey: !!js process.env.DEEPSEEK_API_KEY
    baseURL: !!js process.env.DEEPSEEK_BASE_URL

+# Transient-failure recovery around the loop's model calls (same policy as
+# the TUI's agent-spine composition; defaults: 2 retries, 500ms→10s backoff).
+- id: llm-retry
+  name: '@deepseek-ai/dsh-llm-retry'
+
 - id: session-persistence-jsonl
  name: '@deepseek-ai/dsh-session-persistence-jsonl'
  config:
@@ -36,6 +36,7 @@
    "@deepseek-ai/dsh-client-ui-theme": "workspace:^",
    "@deepseek-ai/dsh-client-ui-trajectory": "workspace:^",
    "@deepseek-ai/dsh-client-ui-workspace": "workspace:^",
+    "@deepseek-ai/dsh-code-runtime-worker": "workspace:^",
    "@deepseek-ai/dsh-compact-basic": "workspace:^",
    "@deepseek-ai/dsh-frontend": "workspace:^",
    "@deepseek-ai/dsh-fs-local": "workspace:^",
@@ -44,6 +45,7 @@
    "@deepseek-ai/dsh-host-webserver": "workspace:^",
    "@deepseek-ai/dsh-llm": "workspace:^",
    "@deepseek-ai/dsh-llm-deepseek": "workspace:^",
+    "@deepseek-ai/dsh-llm-retry": "workspace:^",
    "@deepseek-ai/dsh-paths": "workspace:^",
    "@deepseek-ai/dsh-session": "workspace:^",
    "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
@@ -0,0 +1,188 @@
+// @vitest-environment jsdom
+// Code Mode fixture snapshot over the BUILT client graph (the workspace-flow
+// idiom: real bundles via AppWebEntry, keyless FixtureApiClient transport).
+// Opens the fixture history session and pins the run_code turn's rendering:
+// the code-variant parent row titled by the model-authored description, its
+// three always-visible nested sub-rows (bash through the sample registration,
+// read through GenericToolCard, the failing read wearing the error state),
+// the expanded program body, and details-panel resolution of a sub-callId.
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { afterEach, beforeEach, expect, it, vi } from 'vitest'
+import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
+import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+
+const PLUGINS: readonly (WebBootEntry & { dir: string })[] = [
+  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', url: '/plugins/connection.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', url: '/plugins/runtime.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', url: '/plugins/ui-theme.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-locale', dir: 'locale', url: '/plugins/locale.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-layout', dir: 'ui-layout', url: '/plugins/ui-layout.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-runtime'] },
+  { id: '@deepseek-ai/dsh-client-ui-sidebar', dir: 'ui-sidebar', url: '/plugins/ui-sidebar.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', url: '/plugins/ui-conversation.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  {
+    id: '@deepseek-ai/dsh-client-ui-workspace',
+    dir: 'ui-workspace',
+    url: '/plugins/ui-workspace.js',
+    rev: 'fx',
+    inject: [
+      '@deepseek-ai/dsh-client-runtime',
+      '@deepseek-ai/dsh-client-ui-conversation',
+      '@deepseek-ai/dsh-client-ui-sidebar',
+    ],
+  },
+  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', url: '/plugins/ui-trajectory.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
+]
+
+const bundles = new Map(PLUGINS.map(plugin => [
+  plugin.url,
+  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
+]))
+
+interface FixtureWindow extends Window {
+  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
+  __ModuleLoader__?: unknown
+}
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+const win = window as FixtureWindow
+let unmount: (() => void) | undefined
+
+beforeEach(() => {
+  localStorage.clear()
+  document.title = 'DeepSeek Harness'
+  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+    setTimeout(() => { callback(0) }, 0) as unknown as number)
+  vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+})
+
+afterEach(() => {
+  act(() => { unmount?.() })
+  unmount = undefined
+  cleanup()
+  delete win.__DSH_BOOT__
+  delete win.__ModuleLoader__
+  delete (globalThis as Record<string, unknown>).__fxTiming
+  document.body.innerHTML = ''
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+  document.title = ''
+  history.replaceState(null, '', '/')
+  vi.unstubAllGlobals()
+})
+
+/** Boot the complete built client graph against the populated fixture branch. */
+function boot(): void {
+  history.replaceState(null, '', '/?fixture')
+  const root = document.createElement('div')
+  root.id = 'root'
+  document.body.appendChild(root)
+  win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
+  act(() => {
+    const entry = new AppWebEntry(root, {
+      fetchBundle: (url) => {
+        const code = bundles.get(url)
+        return code === undefined ? Promise.reject(new Error(`missing built bundle ${url}`)) : Promise.resolve(code)
+      },
+      executeBundle: (code) => { (0, eval)(code) },
+    })
+    void entry.run()
+    unmount = () => { entry.dispose() }
+  })
+}
+
+/** Collapse decorative whitespace while preserving the text a user sees. */
+function visibleText(element: Element): string {
+  return (element.textContent ?? '').replace(/\s+/g, ' ').trim()
+}
+
+/** Open the fixture history session (the alpha log carrying the run_code turn) and scroll to its tail. */
+async function openFixtureSession(): Promise<void> {
+  const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
+  const group = within(tree).getByText('4 sessions').closest<HTMLElement>('[role="treeitem"]')
+  if (group === null) throw new Error('fixture Workspace group missing')
+  if (group.getAttribute('aria-expanded') === 'false') {
+    fireEvent.click(within(group).getByText('fixture'))
+    await waitFor(() => {
+      expect(within(tree).getByText('4 sessions').closest('[role="treeitem"]')?.getAttribute('aria-expanded')).toBe('true')
+    })
+  }
+  const session = await within(tree).findByText('Fixture 历史会话')
+  fireEvent.click(session)
+  await waitFor(() => {
+    expect(document.querySelector('[data-variant="code"]')).not.toBeNull()
+  }, { timeout: 10_000 })
+}
+
+it('renders the fixture run_code turn: code parent row, nested sub-rows, error state', async () => {
+  boot()
+  await openFixtureSession()
+
+  const codeRoot = document.querySelector('[data-variant="code"]')
+  if (codeRoot === null) throw new Error('code-variant row missing')
+  const nest = codeRoot.closest('[class*="callRow"]')?.querySelector('[data-subcalls]')
+  if (nest === undefined || nest === null) throw new Error('sub-call nest missing under the code row')
+
+  expect({
+    parentRow: visibleText(codeRoot),
+    // The three sub-rows in dispatch order: bash rides the sample plugin's
+    // keyed registration (the same one a native top-level bash row uses),
+    // both reads ride GenericToolCard.
+    bashSample: nest.querySelector('[data-sample="bash-global"]') !== null,
+    subRows: [...nest.querySelectorAll(':scope > *')].map(visibleText),
+    errorSubRow: nest.querySelector('[data-state="error"]') !== null,
+  }).toMatchInlineSnapshot(`
+    {
+      "bashSample": true,
+      "errorSubRow": true,
+      "parentRow": "CodeRead the notes files and summarize",
+      "subRows": [
+        "$List notes",
+        "Readnotes/demo.txt",
+        "Readnotes/missing.txt",
+      ],
+    }
+  `)
+})
+
+it('expands the code row into the program body and resolves a sub-row through the details panel', async () => {
+  boot()
+  await openFixtureSession()
+
+  // Expand: the leading control reveals the program verbatim.
+  const codeRoot = document.querySelector('[data-variant="code"]')
+  if (codeRoot === null) throw new Error('code-variant row missing')
+  const toggle = codeRoot.querySelector('button[aria-expanded]')
+  if (toggle === null) throw new Error('code row expand control missing')
+  fireEvent.click(toggle)
+  await screen.findByText(/const listing = await tools\.bash/)
+
+  // Sub-row click → details panel resolves the sub-callId with FULL output.
+  const nest = document.querySelector('[data-subcalls]')
+  if (nest === null) throw new Error('sub-call nest missing')
+  const bashRow = nest.querySelector('[data-sample="bash-global"]')
+  if (bashRow === null) throw new Error('bash sample sub-row missing')
+  fireEvent.click(bashRow)
+  const details = await screen.findByText('Input')
+  const panel = details.closest('[class*="root"]')
+  if (panel === null) throw new Error('details panel missing')
+  expect({
+    title: visibleText(within(panel as HTMLElement).getByText('bash')),
+    inputEchoesArgs: visibleText(panel).includes('ls notes'),
+    outputComplete: visibleText(panel).includes('demo.txt new-demo.txt')
+      || visibleText(panel).includes('demo.txt\nnew-demo.txt')
+      || (panel.textContent ?? '').includes('demo.txt\nnew-demo.txt'),
+  }).toMatchInlineSnapshot(`
+    {
+      "inputEchoesArgs": true,
+      "outputComplete": true,
+      "title": "bash",
+    }
+  `)
+})
@@ -0,0 +1,144 @@
+// Web e2e scenario: a Code Mode round trip. The scaffold boots the SAME
+// shipped tree with the tools row patched to mode: code (the run_code-only
+// wire), a real chromium sends a prompt engineered to elicit one run_code
+// program with several sub-calls, and the UI must render the code-variant
+// parent row with its always-visible nested sub-rows — each sub-row the same
+// component a native call renders through — plus details-panel resolution for
+// a clicked sub-row. Drive steps wait only on generic completion
+// (whenTurnSettled); assertion steps run in replay/refresh only.
+// Record: DSH_SNAPSHOT=record rewrites session.jsonl, then a keyless
+// DSH_SNAPSHOT=refresh regenerates ui.expected.md.
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const FIXTURE = fileURLToPath(new URL('./snapshots/code-mode-round/session.jsonl', import.meta.url))
+const UI_EXPECTED = fileURLToPath(new URL('./snapshots/code-mode-round/ui.expected.md', import.meta.url))
+const MODE = webSnapshotMode()
+
+// The scenario's one drive prompt: elicits one program with a bash sub-call
+// and a failing read the program tolerates — the sub-row set the assertions
+// (and the PR gif) need. Never asserted against model prose.
+const PROMPT = 'Using ONE run_code program: run bash `echo CODE_ROUND_OK`, then read the file missing.txt '
+  + 'catching its error in the program. Return an object with both outcomes. Then reply DONE and stop.'
+
+describe('web e2e: Code Mode round renders nested sub-calls', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({
+      toolsMode: 'code',
+      ...(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 }),
+    })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('drives the recorded prompt to a settled turn (all modes)', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-drive'))
+    if (MODE !== 'record') {
+      // Drift guard: the committed fixture must carry exactly the drive prompt.
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+    }
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('the durable log carries run_code with full-content sub-dispatches', () => {
+    // Wire discipline: code mode collapsed the call surface to run_code.
+    const calls = sessionEvents.filter(event => event.type === 'tool/call')
+    expect(calls.length).toBeGreaterThanOrEqual(1)
+    expect(new Set(calls.map(call => (call.data as { name: string }).name))).toEqual(new Set(['run_code']))
+    // Sub-dispatches logged with the complete tool/result vocabulary.
+    const dispatches = sessionEvents.filter(event => (event.type as string) === 'tool/code-dispatch')
+    expect(dispatches.length).toBeGreaterThanOrEqual(2)
+    for (const dispatch of dispatches) {
+      const data = dispatch.data as unknown as {
+        parentCallId: string
+        subCallId: string
+        name: string
+        isError: boolean
+        content: { type: string }[]
+      }
+      expect(data.subCallId.startsWith(`${data.parentCallId}:code:`)).toBe(true)
+      expect(Array.isArray(data.content)).toBe(true)
+      expect(typeof data.isError).toBe('boolean')
+    }
+    const bash = dispatches.find(dispatch => (dispatch.data as { name: string }).name === 'bash')
+    expect(bash).toBeDefined()
+    const bashContent = (bash!.data as { content: { type: string; text?: string }[] }).content
+    expect(bashContent.filter(block => block.type === 'text').map(block => block.text).join('')).toContain('CODE_ROUND_OK')
+  })
+
+  it.skipIf(MODE === 'record')('renders the code parent row with always-visible nested sub-rows', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-rows'))
+    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // The parent run_code row wears the code variant with the model-authored
+    // description as its summary (the PR1 presentCall contract).
+    const codeRow = page.locator('[data-variant="code"]').first()
+    await codeRow.waitFor({ timeout: 10_000 })
+    // Nested rows are visible WITHOUT any expand interaction, inside the
+    // sub-call nest, each rendered by the same components as native rows:
+    // the bash sub-call landed in the bash sample registration.
+    const nest = page.locator('[data-subcalls]').first()
+    await nest.waitFor({ timeout: 10_000 })
+    expect(await nest.locator('[data-sample="bash-global"]').count()).toBeGreaterThanOrEqual(1)
+    // The failing read sub-call wears the same error state a native failed
+    // row wears (the recorded program tolerates a read of missing.txt).
+    expect(await nest.locator('[data-state="error"]').count()).toBeGreaterThanOrEqual(1)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('a sub-row click opens the details panel on the sub-call material', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-details'))
+    const nest = page.locator('[data-subcalls]').first()
+    await nest.locator('[data-sample="bash-global"]').first().click()
+    // The details column opens (width > 0) and shows the sub-call's complete
+    // output — the full-content log contract, no truncation marker anywhere.
+    await page.waitForFunction(() => {
+      const frame = document.querySelector('[class*="frame"]')
+      if (frame === null) return false
+      return Number(getComputedStyle(frame).gridTemplateColumns.split(' ').pop()!.replace('px', '')) > 0
+    }, undefined, { timeout: 10_000 })
+    await expect.poll(() => page.getByText('CODE_ROUND_OK', { exact: false }).count(), { timeout: 5_000 })
+      .toBeGreaterThanOrEqual(1)
+  })
+
+  it.skipIf(MODE === 'record')('matches the conversation aria golden with stable anchors', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-aria'))
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+  })
+
+  it.skipIf(MODE === 'record')('stayed clean: no page errors, no reconnect churn', () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  })
+})
@@ -0,0 +1,163 @@
+// Web e2e scenarios: lifecycle & chrome — the workspace-aware first-send
+// flow over the real wire, reload recovery, and the dark-mode token cascade.
+// One tiny recorded turn (text-only) drives the whole spec: the empty-state
+// hero materializes a real Workspace + Session on first send (the jsdom
+// workspace-flow suite pins the object-layer state machine over the fixture
+// client; THIS spec pins the same flow through HTTP RPC + SSE + the host
+// gateway), reload replays everything from the log (zero further model
+// calls), and the theme scenario proves the shipped dark palette actually
+// cascades: attribute -> alias token flip -> painted surface change. Per the
+// lane's scope ruling there is no theme/layout golden (aria is color-blind);
+// the hero's waiting state gets the one golden here.
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/lifecycle-chrome', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const HERO_EXPECTED = join(SNAPSHOT_DIR, 'hero.expected.md')
+// Post-reload golden: the same settled conversation rebuilt purely from
+// persistence + history — byte-equal rendering is exactly the recovery claim.
+const RELOADED_EXPECTED = join(SNAPSHOT_DIR, 'reloaded.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = 'Reply with the single word LIGHTHOUSE and stop.'
+
+describe('web e2e: lifecycle & chrome (workspace flow / reload / dark mode)', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('sends the first prompt from the empty-state hero (all modes)', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-send'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    // The blank frame renders the hero, not the resident composer: the
+    // headline plus the guidance placeholder are the empty state's anchors.
+    await expect.poll(() => page.getByText("Let's start building", { exact: false }).count(), { timeout: 15_000 }).toBe(1)
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    if (MODE !== 'record') {
+      // Golden of the hero's stable waiting state (captured before any send;
+      // the conversation-region goldens belong to the other scenarios).
+      const snapshot = await captureStableAria(page, '[class*="frame"]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(HERO_EXPECTED, snapshot, MODE)
+    }
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+    }
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('materialized a real Workspace and Session over the wire', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-materialize'))
+    // Browser: the sidebar tree now carries the auto-created workspace group
+    // with its one session, and the opened session is the selected row.
+    await expect.poll(() => page.getByText('1 session', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.locator('[role="treeitem"][aria-selected="true"]').count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('LIGHTHOUSE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Host: the session's durable header cwd is the workspace flow's
+    // create-by-name target (<workspaceRoot>/workspace, the composer's
+    // default draft name) — the proof the send went through workspace
+    // materialization rather than a bare default-cwd session.
+    const cwds = scaffold.ctx.sessions.list().map(session => session.header.cwd)
+    expect(cwds).toEqual([join(scaffold.workspaceCwd, 'workspace')])
+    const turnEnds = sessionEvents.filter(e => e.type === 'turn/end')
+    expect(turnEnds).toHaveLength(1)
+    expect((turnEnds[0] as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind).toBe('completed')
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('recovers the whole surface across a reload from the log alone', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-reload'))
+    // Fold a layout preference into the same reload: collapse the sidebar
+    // (persisted under dsh.layout.panels) before reloading.
+    await page.getByRole('button', { name: 'Collapse sidebar' }).click()
+    await expect.poll(() => page.getByRole('button', { name: 'Open sidebar' }).count(), { timeout: 10_000 }).toBe(1)
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    // Layout persisted: the sidebar comes back collapsed.
+    await expect.poll(() => page.getByRole('button', { name: 'Open sidebar' }).count(), { timeout: 10_000 }).toBe(1)
+    // Selection persisted (dsh.sessions.current) and history replayed: the
+    // recorded turn re-renders from session.history with zero model calls —
+    // the replay cursor was fully consumed before the reload, so any stray
+    // request would fail the scenario loudly at close().
+    await expect.poll(() => page.getByText('LIGHTHOUSE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Expand back and confirm the tree still lists the materialized session.
+    await page.getByRole('button', { name: 'Open sidebar' }).click()
+    await expect.poll(() => page.locator('[role="treeitem"][aria-selected="true"]').count(), { timeout: 10_000 }).toBe(1)
+    // Golden of the recovered conversation region: rebuilt from the log, it
+    // must render the same settled transcript the live turn produced.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(RELOADED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('cascades the dark theme from the body attribute to painted surfaces', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-dark'))
+    // This scenario pins the ThemeService's DOM contract seam directly (the
+    // body[data-ds-dark-theme] attribute -> stylesheet cascade); the REAL
+    // user gesture above it (Settings -> Appearance cubes) is owned by
+    // settings-chrome.e2e.ts. Driving the attribute here keeps the cascade
+    // pinned independently of the settings surface's own lifecycle.
+    const sample = async (): Promise<{ token: string; sidebarBg: string; bodyBg: string }> =>
+      await page.evaluate(() => {
+        const sidebar = document.querySelector('[class*="sidebar"], [class*="rail"]') ?? document.body
+        return {
+          token: getComputedStyle(document.body).getPropertyValue('--dsw-alias-bg-base').trim(),
+          sidebarBg: getComputedStyle(sidebar).backgroundColor,
+          bodyBg: getComputedStyle(document.body).backgroundColor,
+        }
+      })
+    const light = await sample()
+    await page.evaluate(() => { document.body.setAttribute('data-ds-dark-theme', '') })
+    const dark = await sample()
+    // The alias token itself must flip — the cascade's root fact.
+    expect(dark.token).not.toBe(light.token)
+    // And a real painted surface must consume it (not just variables in a
+    // void): at least one of the sampled backgrounds repaints.
+    expect(dark.sidebarBg !== light.sidebarBg || dark.bodyBg !== light.bodyBg).toBe(true)
+    // Removing the attribute restores the light values exactly (the palettes
+    // live in one stylesheet; activation is attribute-only by design).
+    await page.evaluate(() => { document.body.removeAttribute('data-ds-dark-theme') })
+    const restored = await sample()
+    expect(restored).toEqual(light)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'hero.expected.md', 'reloaded.expected.md'])
+  })
+})
@@ -0,0 +1,207 @@
+// Web e2e scenarios: live-turn interactions — cancellation, error surfacing,
+// and transient-retry recovery, all through the real composition and wire.
+// The model seam is dsh-llm-replay with override sidecars: `hang` (+ a
+// readyFile marker) makes mid-stream cancel deterministic by construction,
+// `throw` entries express provider failures by stable code, and `{ patches }`
+// augmentation injects a transient throw before the recorded success so
+// llm-retry's recovery is proven end-to-end in the browser. Sidecar CONTENT
+// is authored here (single-sourced against the fixture via deriveReplayScript
+// — no committed copy of recorded chunks); the file is a per-run artifact in
+// the temp workspace. One recorded base fixture serves all three scenarios.
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { existsSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import { deriveReplayScript, parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { ReplayOverrideDoc } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/live-interactions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// One golden per interactive end-state: what the user is left looking at
+// after cancel, after a non-retryable failure (pins the FIXME(web-error-surface)
+// gap as a reviewable artifact: NO error copy in the tree), and after retry
+// recovery — three genuinely different terminal surfaces of one fixture.
+const CANCEL_EXPECTED = join(SNAPSHOT_DIR, 'cancel.expected.md')
+const ERROR_EXPECTED = join(SNAPSHOT_DIR, 'error-auth.expected.md')
+const RETRY_EXPECTED = join(SNAPSHOT_DIR, 'retry.expected.md')
+const MODE = webSnapshotMode()
+
+// The recorded base: one text-only turn whose derived script the sidecars
+// patch. Kept deliberately tool-free so the derived script is exactly one
+// model call.
+const PROMPT = 'Reply with a one-sentence description of event sourcing, then stop.'
+
+/** turn/end reasons observed, in order. */
+function turnEndReasons(events: SessionEvent[]): string[] {
+  return events
+    .filter(e => e.type === 'turn/end')
+    .map(e => (e as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind)
+}
+
+describe('web e2e: live-turn interactions (cancel / error / retry)', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+  let sidecarDir: string | undefined
+
+  afterEach(async () => {
+    // scaffold.close() failures MUST fail the scenario: assertConsumed() is
+    // the fixture-drift tripwire and cleanup problems are real defects. Run
+    // every teardown step regardless, then rethrow what failed.
+    const failures: unknown[] = []
+    await browser?.close().catch((error: unknown) => failures.push(error))
+    browser = undefined
+    const closing = scaffold
+    scaffold = undefined
+    await closing?.close().catch((error: unknown) => failures.push(error))
+    if (sidecarDir !== undefined) await rm(sidecarDir, { recursive: true, force: true }).catch((error: unknown) => failures.push(error))
+    sidecarDir = undefined
+    if (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'live-interactions teardown failed')
+  })
+
+  /** Boot scaffold + page with an optional override doc materialized per run. */
+  async function launch(buildOverride?: (sidecarHome: string) => ReplayOverrideDoc): Promise<void> {
+    sessionEvents = []
+    let overridePath: string | undefined
+    if (buildOverride !== undefined) {
+      // The sidecar CONTENT is authored in this spec; the file is a per-run
+      // artifact minted in a spec-owned temp dir. It must exist BEFORE the
+      // scaffold boots — installLlmReplay resolves the script at install.
+      sidecarDir = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sidecar-'))
+      overridePath = join(sidecarDir, 'replay.override.json')
+      await writeFile(overridePath, JSON.stringify(buildOverride(sidecarDir)))
+    }
+    scaffold = await launchWebScaffold({
+      replayFixture: FIXTURE,
+      ...(overridePath === undefined ? {} : { replayOverride: overridePath }),
+    })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }
+
+  /**
+   * Type the recorded prompt and send, with the settled barrier pre-armed.
+   * Returned WRAPPED ({ settled }) — a bare returned promise would be
+   * flattened by the caller's await, blocking on turn/end before the caller
+   * can act mid-turn (the cancel scenario's whole point).
+   */
+  async function sendPrompt(timeoutMs?: number): Promise<{ settled: ReturnType<WebScaffold['whenTurnSettled']> }> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold!.whenTurnSettled(timeoutMs)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    return { settled }
+  }
+
+  it.skipIf(MODE !== 'record')('records the base fixture live through the composer', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-interactions-record'))
+    const { settled } = await sendPrompt(180_000)
+    const sessionId = await settled
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('cancels a hung stream deterministically via the readyFile marker', async () => {
+    expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    let marker = ''
+    await launch((sidecarHome) => {
+      marker = join(sidecarHome, '.hang-ready')
+      return { patches: [{ at: 0, entry: { kind: 'hang', readyFile: marker } }] }
+    })
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-cancel'))
+    const { settled } = await sendPrompt()
+    // The marker IS the synchronization: the stream is provably parked in the
+    // hang (prefix chunks delivered to the loop) before the stop click.
+    await expect.poll(() => existsSync(marker), { timeout: 15_000 }).toBe(true)
+    await page.getByRole('button', { name: 'Stop generating' }).click()
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('aborted')
+    // Composer recovered; no streaming node lingers.
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    expect(await page.locator('[data-streaming="true"]').count()).toBe(0)
+    // Golden of the aborted end-state: the prompt bubble plus the frozen
+    // partial ('partial' is the hang entry's replayed prefix) and no more.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(CANCEL_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('surfaces a non-retryable AUTH failure without retrying', async () => {
+    await launch(() => ({
+      patches: [{ at: 0, entry: { kind: 'throw', chunks: [], message: 'invalid api key', code: 'AUTH' } }],
+    }))
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-error-auth'))
+    const { settled } = await sendPrompt()
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('error')
+    // AUTH is outside llm-retry's retryable set: no retry record.
+    expect(sessionEvents.filter(e => e.type === 'llm/retry').length).toBe(0)
+    // Product gap found by this lane, pinned as-is: the client consumes no
+    // agent/error frames and a pre-chunk failure freezes no partial, so THIS
+    // failure renders no error copy anywhere — the user sees the send simply
+    // stop. FIXME(web-error-surface): assert visible error text here once the
+    // web UI grows an error rendering; until then the pinned contract is
+    // "no crash, composer recovers, turn logged as error".
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    expect(await page.locator('[data-streaming="true"]').count()).toBe(0)
+    // Golden of the same gap: the prompt bubble alone, no error copy in the
+    // tree — the diff that changes when web-error-surface lands.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(ERROR_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('recovers a transient SERVER failure through llm-retry and completes', async () => {
+    const derived = deriveReplayScript(parseSessionLog(await readFile(FIXTURE, 'utf8')))
+    expect(derived).toHaveLength(1)
+    await launch(() => ({
+      patches: [
+        { at: 0, entry: { kind: 'throw', chunks: [], message: 'upstream 503', code: 'SERVER' } },
+        // Append the fixture's own success as the retry attempt — single-
+        // sourced from the recording, never copied into a committed sidecar.
+        { at: 1, entry: derived[0]! },
+      ],
+    }))
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-retry'))
+    // llm-retry backs off ~500ms before the second attempt.
+    const { settled } = await sendPrompt(60_000)
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('completed')
+    // The durable retry record proves the second attempt (request/header logs
+    // only on change, so attempt count is invisible there).
+    expect(sessionEvents.filter(e => e.type === 'llm/retry').length).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByText('event sourcing', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThan(0)
+    // Golden of the recovered end-state: indistinguishable from a clean
+    // completion — retries are deliberately invisible in the transcript.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(RETRY_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'session.jsonl', 'cancel.expected.md', 'error-auth.expected.md', 'retry.expected.md',
+    ])
+  })
+})
@@ -0,0 +1,190 @@
+// Web e2e scenarios: navigation & panes — the view tabs (Trajectory /
+// Waterfall), the details column, and sidebar search, all over ONE rich
+// two-turn seeded fixture rendered purely from the log (the seeded-history
+// pattern: zero model calls in replay, so every surface here is the client
+// fold + host history RPC, not replay binding). The seed is recorded live
+// under the standard discipline: turn 1 produces a bash call plus two
+// parallel reads in one assistant message (tool-call density for the
+// trajectory/waterfall lanes and a details-capable bash row), turn 2 a
+// markdown-rich reply (a second turn so the waterfall has two lanes).
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, seedSession, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/navigation-panes', import.meta.url))
+const SEED = join(SNAPSHOT_DIR, 'seed.jsonl')
+const TRAJECTORY_EXPECTED = join(SNAPSHOT_DIR, 'trajectory.expected.md')
+const WATERFALL_EXPECTED = join(SNAPSHOT_DIR, 'waterfall.expected.md')
+const DETAILS_EXPECTED = join(SNAPSHOT_DIR, 'details-open.expected.md')
+const MODE = webSnapshotMode()
+const SEED_ID = 'navigation-panes-web-e2e'
+
+// Turn 1 leads with a distinctive word: the session-title fallback takes the
+// first words of the first message, so the sidebar-search scenario has a
+// known-matching query ('navscenario') without depending on a live title call.
+const PROMPT_TURN1 = 'NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop.'
+const PROMPT_TURN2 = 'Reply in markdown with: a level-2 heading "Navigation Summary", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop.'
+
+describe('web e2e: navigation & panes over a rich seeded session', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    // The workspace-aware flow runs sessions in <workspaceRoot>/workspace;
+    // the read targets must live in that session cwd (pre-creation is safe:
+    // create-by-name adopts an existing directory).
+    const sessionCwd = join(scaffold.workspaceCwd, 'workspace')
+    await mkdir(sessionCwd, { recursive: true })
+    await writeFile(join(sessionCwd, 'nav-a.md'), '# alpha nav\n')
+    await writeFile(join(sessionCwd, 'nav-b.md'), '# beta nav\n')
+    if (MODE !== 'record') {
+      const raw = await readFile(SEED, 'utf8')
+      expect(fixtureUserPrompts(raw), 'seed fixture must carry exactly the two drive prompts')
+        .toEqual([PROMPT_TURN1, PROMPT_TURN2])
+      await seedSession(scaffold, raw, SEED_ID)
+    }
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it.skipIf(MODE !== 'record')('records the two-turn seed live through the composer', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-record'))
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    let sessionId: Awaited<ReturnType<WebScaffold['whenTurnSettled']>> | undefined
+    for (const prompt of [PROMPT_TURN1, PROMPT_TURN2]) {
+      const settled = scaffold.whenTurnSettled()
+      // Turn 2 types into the same composer once turn 1 unlocks it.
+      await expect.poll(() => input.isEnabled(), { timeout: 15_000 }).toBe(true)
+      await input.fill(prompt)
+      await input.press('Enter')
+      sessionId = await settled
+    }
+    await recordFixture(scaffold, sessionId!, SEED)
+    // Fixture honesty: the recording must carry the shape the replay
+    // scenarios assert on — three calls in turn 1 and two closed turns.
+    const recorded = parseSessionLog(await readFile(SEED, 'utf8'))
+    expect(recorded.filter(e => e.type === 'turn/end')).toHaveLength(2)
+    const calls = recorded.filter((e): e is SessionEvent & { data: { name: string } } => e.type === 'tool/call')
+    expect(calls.map(e => e.data.name).sort()).toEqual(['bash', 'read', 'read'])
+  }, 400_000)
+
+  it.skipIf(MODE === 'record')('opens the seeded session and renders both turns from the log', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-open'))
+    // Expand the collapsed group row, then open the revealed session row.
+    const groupRow = page.locator('[role="treeitem"]').first()
+    await groupRow.waitFor({ timeout: 15_000 })
+    await groupRow.click()
+    const sessionRow = page.locator('[role="treeitem"]').nth(1)
+    await sessionRow.waitFor({ timeout: 10_000 })
+    await sessionRow.click()
+    await expect.poll(() => page.getByText('FIRST_DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByRole('heading', { name: 'Navigation Summary' }).count(), { timeout: 15_000 }).toBe(1)
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('filters the sidebar tree by title through the search box', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-search'))
+    // Runs after the session is open: a cold summary carries no title (the
+    // sidebar shows the cwd basename), and the durable title lands with the
+    // attach subscription's baseline — which is itself worth pinning: search
+    // matches the title the user sees, not a hidden cold field.
+    const search = page.getByPlaceholder('Search name, keywords', { exact: false })
+    await expect.poll(() => page.getByText('NavScenario', { exact: false }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Negative: a garbage query empties the tree (group rows hide too).
+    await search.fill('zzzqx-no-such-session')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBe(0)
+    // Positive: a title word narrows to the matched session + its group,
+    // force-expanded by search mode (case-insensitive client-side filter).
+    await search.fill('navscenario')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    // Clear restores the unfiltered tree.
+    await page.getByRole('button', { name: 'Clear search' }).click()
+    await expect.poll(() => search.inputValue(), { timeout: 5_000 }).toBe('')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('renders the trajectory tab with turn sections and step cells', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-trajectory'))
+    await page.getByRole('tab', { name: 'Trajectory' }).click()
+    // Two sticky turn sections; turn 1's step group summarizes its tool mix
+    // (bash + the two parallel reads collapse to 'bash read×2').
+    await expect.poll(() => page.getByText('Turn 1', { exact: true }).count(), { timeout: 15_000 }).toBe(1)
+    await expect.poll(() => page.getByText('Turn 2', { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('bash read×2', { exact: false }).count(), { timeout: 10_000 }).toBe(1)
+    const snapshot = (await captureStableAria(page, '[class*="viewArea"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(TRAJECTORY_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('renders the waterfall tab with span stats and one lane per span', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-waterfall'))
+    await page.getByRole('tab', { name: 'Waterfall' }).click()
+    // The stats header rides the waterfall body. The span fold counts THREE
+    // spans for this two-turn log: only assistant/steering nodes carry a turn
+    // number, so the first user message lands in a turn-0 prologue span (a
+    // P-I placeholder shape — pinned as-is; real spans are deferred to
+    // P-III per the view's deviation ledger). Calls: bash + two reads.
+    await expect.poll(() => page.getByText(/3 turns · \d+ steps · 3 tool calls/).count(), { timeout: 15_000 }).toBe(1)
+    // One lane per span, tagged by turn number, prologue included.
+    for (const tag of ['turn 0', 'turn 1', 'turn 2']) {
+      await expect.poll(() => page.getByText(tag, { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    }
+    const snapshot = (await captureStableAria(page, '[class*="viewArea"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(WATERFALL_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('opens the details column from the bash row and closes it', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-details'))
+    await page.getByRole('tab', { name: 'Chat' }).click()
+    // The bash toolview row routes its click to openDetails (read rows are
+    // expand-in-place instead — the seeded-history scenario owns that fold).
+    const bashRow = page.locator('[data-sample="bash-global"]').first()
+    await bashRow.waitFor({ timeout: 15_000 })
+    // Open/closed is the frame's collapsed attribute: the column collapses to
+    // width 0 but its subtree deliberately never unmounts (hidden, not
+    // absent), so element presence/visibility cannot express the state.
+    const frame = page.locator('[data-details-collapsed], [class*="frame"]').first()
+    expect(await frame.getAttribute('data-details-collapsed')).not.toBeNull()
+    await bashRow.click()
+    await expect.poll(() => frame.getAttribute('data-details-collapsed'), { timeout: 10_000 }).toBeNull()
+    // The open panel shows the selected call's name, arguments, and durable
+    // result (NAVIGATION_OK appears in the chat row too, hence >= 2 total).
+    await expect.poll(() => page.getByText('NAVIGATION_OK', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    // Golden of the open panel: tool name header, Input args, Output result.
+    const snapshot = (await captureStableAria(page, '[class*="detailsCol"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(DETAILS_EXPECTED, snapshot, MODE)
+    await page.getByRole('button', { name: '关闭详情' }).click()
+    await expect.poll(() => frame.getAttribute('data-details-collapsed'), { timeout: 10_000 }).not.toBeNull()
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', async () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'seed.jsonl', 'trajectory.expected.md', 'waterfall.expected.md', 'details-open.expected.md',
+    ])
+  })
+})
@@ -0,0 +1,107 @@
+// Web e2e scenario: the resident question composer. The shipped composition
+// already exposes ask_user_question (the ui-question row's node half mounts
+// the tool), so a recorded turn where the model asks blocks mid-turn on the
+// real userInteraction seam: the composer renders in the browser, the test
+// answers through it, and the turn completes with the answer in the log.
+// Replay is fully deterministic — the question content arrives from replayed
+// chunks, the composer wait is real, and the answer click is the test's own
+// gesture (the ONE place a drive step legitimately reacts to model content:
+// the turn cannot complete without it, in record and replay alike).
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/question-composer', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const UI_EXPECTED = join(SNAPSHOT_DIR, 'ui.expected.md')
+// Second golden: the answered transcript — the question resolved into its
+// tool round trip and the final reply, the state the waiting golden cannot see.
+const ANSWERED_EXPECTED = join(SNAPSHOT_DIR, 'answered.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = 'Use the ask_user_question tool to ask me exactly one question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". After I answer, reply with the single word DONE and stop.'
+
+describe('web e2e: resident question composer round trip', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('asks through the composer, answers, and completes with the answer logged', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-question'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled(MODE === 'record' ? 180_000 : 30_000)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+
+    // The composer takes over the input area while the tool blocks. Its
+    // presence is a STABLE waiting state (not a transient): it stays until
+    // answered, so a plain waitFor is race-free.
+    const composer = page.locator('[data-question-key]')
+    await composer.waitFor({ timeout: MODE === 'record' ? 120_000 : 30_000 })
+    await expect.poll(() => composer.getByText('Which color do you prefer?').count(), { timeout: 10_000 }).toBeGreaterThan(0)
+
+    if (MODE !== 'record') {
+      // This golden owns the stable question surface; the answered-state
+      // golden below owns the resulting transcript.
+      const snapshot = await captureStableAria(page, '[data-question-key]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+    }
+
+    await composer.getByRole('radio', { name: 'Blue' }).click()
+    // Submit: Enter on the focused option (the composer's documented submit).
+    await composer.getByRole('radio', { name: 'Blue' }).press('Enter')
+
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+      return
+    }
+    // World state: the tool result carries the chosen answer, and DONE lands.
+    const results = sessionEvents.filter(e => e.type === 'tool/result')
+    expect(JSON.stringify(results.at(-1))).toContain('Blue')
+    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Composer gone; regular input restored.
+    expect(await page.locator('[data-question-key]').count()).toBe(0)
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    // Golden of the answered transcript: the ask_user_question round trip
+    // rendered as history (question tool row + DONE), composer takeover gone.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(ANSWERED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'ui.expected.md', 'answered.expected.md'])
+  })
+})
@@ -18,7 +18,7 @@
 // (the plugin-row path discards the ReplayHandle; the direct install keeps
 // assertConsumed for the teardown fixture-consumption check).
 import { existsSync, readFileSync } from 'node:fs'
-import { mkdtemp, readFile, readdir, rm, utimes, writeFile } from 'node:fs/promises'
+import { mkdtemp, readFile, readdir, realpath, rm, utimes, writeFile } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { join, resolve } from 'node:path'
 import { pathToFileURL } from 'node:url'
@@ -101,8 +101,21 @@ export interface LaunchOptions {
   * mounts).
   */
  replayFixture?: string
+  /**
+   * Optional replay.override.json sidecar (whole-script replacement or
+   * `{ patches }` augmentation) for throw/hang scenarios not expressible as
+   * recorded chunks; replay/refresh only.
+   */
+  replayOverride?: string
  /** Per-chunk replay pacing (ms) so the browser observes genuinely incremental SSE; replay/refresh only. */
  paceMs?: number
+  /**
+   * Tool presentation mode patched onto the shipped `tools` row (`code`
+   * collapses the wire to run_code + the SDK prompt section). Omit for the
+   * yml default. The code runtime row is always in the tree, so no extra
+   * insertion is needed.
+   */
+  toolsMode?: 'native' | 'code' | 'both'
 }

 /** Dispose the booted tree and remove both owned temp roots, reporting every independent cleanup failure. */
@@ -128,7 +141,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
      throw new Error('web e2e record mode needs DEEPSEEK_API_KEY (env or repo-root .env)')
    }
  }
-  const workspaceCwd = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-ws-'))
+  const workspaceCwd = await realpath(await mkdtemp(join(tmpdir(), 'dsh-web-e2e-ws-')))
  let persistenceRoot: string
  try {
    persistenceRoot = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sessions-'))
@@ -154,6 +167,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
    { id: 'workspace-context', disabled: true },
    { id: 'session-title-llm', disabled: true },
    { id: 'webserver', config: { host: '127.0.0.1', port: 0, distIndex: DIST_INDEX } },
+    ...options.toolsMode === undefined ? [] : [{ id: 'tools', config: { mode: options.toolsMode } }],
    ...mode === 'record' ? [] : [{ id: 'llm-deepseek', disabled: true }],
  ]

@@ -188,6 +202,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
      replayHandle = installLlmReplay(ctx, {
        file: options.replayFixture,
        providers: REPLAY_PROVIDERS,
+        ...(options.replayOverride === undefined ? {} : { overrideFile: options.replayOverride }),
        ...(options.paceMs === undefined ? {} : { paceMs: options.paceMs }),
      })
    }
@@ -438,3 +453,17 @@ export function watchConsole(page: Page): { warnings: string[]; pageErrors: stri
  page.on('pageerror', (error) => { pageErrors.push(String(error)) })
  return { warnings, pageErrors }
 }
+
+/**
+ * Remove only connection-loss warnings emitted after an intentional reload.
+ * Earlier warnings and all gap-repair/discontinuity warnings remain fatal.
+ * @param tripwire - the live console-warning collector.
+ * @param warningStart - warning count captured immediately before reloading.
+ */
+export function acknowledgeReloadConnectionLoss(
+  tripwire: ReturnType<typeof watchConsole>,
+  warningStart: number,
+): void {
+  const reloadWarnings = tripwire.warnings.splice(warningStart)
+  tripwire.warnings.push(...reloadWarnings.filter(text => !/connection lost/i.test(text)))
+}
@@ -0,0 +1,170 @@
+// Web e2e scenarios: the settings surface — the modal shell (trigger, nav,
+// section switching, both close paths), the Appearance preference row (the
+// real theme gesture — click 深色 and the whole cascade runs: ThemeService preference -> localStorage dsh.theme
+// -> theme/change -> ui-layout's presenter -> body attribute -> alias token)
+// and the Language row (settings-scoped localization + persisted dsh.locale).
+// Zero model calls: everything is pure client + persistence state on a blank
+// frame, so there is no fixture and a stray stream would fail loud on the
+// open llm seam.
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { join } from 'node:path'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { 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 MODE = webSnapshotMode()
+
+describe('web e2e: settings modal, appearance gesture, language switch', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('opens the settings dialog, switches sections, and closes by every path', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-shell'))
+    const trigger = page.getByRole('button', { name: '设置', exact: true })
+    expect(await trigger.getAttribute('aria-haspopup')).toBe('dialog')
+    expect(await trigger.getAttribute('aria-expanded')).toBe('false')
+    await trigger.click()
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.waitFor({ timeout: 10_000 })
+    expect(await trigger.getAttribute('aria-expanded')).toBe('true')
+    // General is the active section by default; its skeleton rows plus the
+    // functional Language and Appearance rows render.
+    expect(await dialog.getByRole('button', { name: '通用设置' }).getAttribute('aria-current')).toBe('true')
+    await expect.poll(() => dialog.getByText('语言', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
+    await expect.poll(() => dialog.getByText('外观', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
+    // Golden of the freshly opened dialog (default zh, General active).
+    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(DIALOG_EXPECTED, snapshot, MODE)
+    // Section switch: aria-current moves; Models is deliberately empty.
+    await dialog.getByRole('button', { name: '模型' }).click()
+    await expect.poll(() => dialog.getByRole('button', { name: '模型' }).getAttribute('aria-current'), { timeout: 5_000 }).toBe('true')
+    expect(await dialog.getByRole('button', { name: '通用设置' }).getAttribute('aria-current')).toBeNull()
+    // Close path 1: Escape.
+    await page.keyboard.press('Escape')
+    await expect.poll(() => page.getByRole('dialog', { name: '设置' }).count(), { timeout: 5_000 }).toBe(0)
+    expect(await trigger.getAttribute('aria-expanded')).toBe('false')
+    // Close path 2: the header close button (focus lands there on open).
+    await trigger.click()
+    await page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '关闭' }).click()
+    await expect.poll(() => page.getByRole('dialog', { name: '设置' }).count(), { timeout: 5_000 }).toBe(0)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it('flips the theme through the Appearance cubes and persists across reload', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-appearance'))
+    const readState = async (): Promise<{ attr: boolean; token: string; stored: string | null }> =>
+      await page.evaluate(() => ({
+        attr: document.body.hasAttribute('data-ds-dark-theme'),
+        token: getComputedStyle(document.body).getPropertyValue('--dsw-alias-bg-base').trim(),
+        stored: localStorage.getItem('dsh.theme'),
+      }))
+    // Pin the OS scheme to light so the default `system` preference resolves
+    // light and the dark flip below is unambiguously the gesture's doing.
+    await page.emulateMedia({ colorScheme: 'light' })
+    const light = await readState()
+    expect(light.attr).toBe(false)
+
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.waitFor({ timeout: 10_000 })
+    const darkCube = dialog.getByRole('button', { name: '深色' })
+    expect(await darkCube.getAttribute('aria-pressed')).toBe('false')
+    await darkCube.click()
+    // The full cascade: pressed state, persisted preference, body attribute,
+    // alias token flip — all from one real user gesture.
+    await expect.poll(() => darkCube.getAttribute('aria-pressed'), { timeout: 5_000 }).toBe('true')
+    const dark = await readState()
+    expect(dark.attr).toBe(true)
+    expect(dark.stored).toBe('dark')
+    expect(dark.token).not.toBe(light.token)
+    await page.keyboard.press('Escape')
+
+    // Reload: the preference survives boot (restore + presenter initial apply).
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await page.emulateMedia({ colorScheme: 'light' })
+    const reloaded = await readState()
+    expect(reloaded.attr).toBe(true)
+    expect(reloaded.stored).toBe('dark')
+
+    // `system` follows the emulated OS scheme (dark stays dark, light clears).
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const systemCube = page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '跟随系统' })
+    await systemCube.click()
+    await expect.poll(() => systemCube.getAttribute('aria-pressed'), { timeout: 5_000 }).toBe('true')
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(false)
+    await page.emulateMedia({ colorScheme: 'dark' })
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(true)
+    // Restore for the specs that follow: light preference beats the emulated
+    // dark OS scheme, leaving the shared page in the light default.
+    await page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '浅色' }).click()
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(false)
+    await page.keyboard.press('Escape')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('switches the settings surface language and persists dsh.locale', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-language'))
+    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 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')
+    await selector.click()
+    await page.getByRole('menuitem', { name: 'English' }).click()
+    // The settings-owned copy re-registers localized: dialog title, nav,
+    // Appearance labels. (Only the settings namespaces are localized today —
+    // 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 })
+    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'))).toBe('en')
+    // Reload keeps English; then restore zh so shared page state (and the
+    // other specs' 设置-anchored selectors + goldens) see the default again.
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    const enTrigger = page.getByRole('button', { name: 'Settings' })
+    await enTrigger.waitFor({ timeout: 10_000 })
+    await enTrigger.click()
+    await page.getByRole('dialog', { name: 'Settings' }).getByRole('button', { name: 'English' }).click()
+    await page.getByRole('menuitem', { name: '中文' }).click()
+    await page.getByRole('dialog', { name: '设置' }).waitFor({ timeout: 10_000 })
+    expect(await page.evaluate(() => localStorage.getItem('dsh.locale'))).toBe('zh')
+    await page.keyboard.press('Escape')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['dialog.expected.md'])
+  })
+})
@@ -271,6 +271,83 @@ describe('dsh web keyless CLI smoke', () => {
      rmSync(workspace, { recursive: true, force: true })
    }
  })
+
+  it('DSH_TOOLS_MODE=code collapses the provider wire tools to run_code with the SDK prompt section', async () => {
+    requireDist()
+    const workspace = mkdtempSync(join(tmpdir(), 'dsh-web-code-mode-'))
+
+    interface CodeModeProviderRequest {
+      messages?: { role?: string; content?: string }[]
+      tools?: { function?: { name?: string } }[]
+    }
+    let resolveProviderRequest!: (request: CodeModeProviderRequest) => void
+    const providerRequest = new Promise<CodeModeProviderRequest>((resolve) => {
+      resolveProviderRequest = resolve
+    })
+    const provider = createServer((request, response) => {
+      let body = ''
+      request.setEncoding('utf8')
+      request.on('data', (chunk: string) => { body += chunk })
+      request.on('end', () => {
+        resolveProviderRequest(JSON.parse(body) as CodeModeProviderRequest)
+        response.writeHead(200, { 'content-type': 'text/event-stream' })
+        response.end([
+          'data: {"choices":[{"delta":{"role":"assistant","content":null,"reasoning_content":""}}]}',
+          'data: {"choices":[{"delta":{"content":"done"}}]}',
+          'data: {"choices":[{"delta":{"content":""},"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
+          'data: [DONE]',
+          '',
+        ].join('\n\n'))
+      })
+    })
+    await new Promise<void>(resolve => provider.listen(0, '127.0.0.1', resolve))
+    const address = provider.address()
+    if (address === null || typeof address === 'string') throw new Error('mock provider did not bind a TCP port')
+    const tsxLoader = pathToFileURL(createRequire(join(REPO_ROOT, 'package.json')).resolve('tsx')).href
+    const child = spawn(
+      process.execPath,
+      ['--import', tsxLoader, join(REPO_ROOT, 'apps/cli/src/bin.ts'), 'web', '--port', '0'],
+      {
+        cwd: workspace,
+        env: {
+          ...process.env,
+          DEEPSEEK_API_KEY: 'keyless-web-code-mode',
+          DEEPSEEK_BASE_URL: `http://127.0.0.1:${address.port}`,
+          DSH_TOOLS_MODE: 'code',
+          DSH_HOME: join(workspace, '.dsh'),
+          TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
+        },
+        stdio: ['ignore', 'pipe', 'pipe'],
+      },
+    )
+    try {
+      const baseUrl = await waitForReadyLine(child)
+      const created = await rpc<{ sessionId: string }>(baseUrl, 'session.create', {})
+      await rpc<{ accepted: true }>(baseUrl, 'session.prompt', {
+        sessionId: created.sessionId,
+        mode: 'queue',
+        content: [{ type: 'text', text: 'go' }],
+      })
+      const captured = await Promise.race([
+        providerRequest,
+        new Promise<never>((_resolve, reject) => {
+          setTimeout(() => { reject(new Error('provider request not received in 10s')) }, 10_000).unref()
+        }),
+      ])
+      expect(captured.tools?.map(tool => tool.function?.name)).toEqual(['run_code'])
+      const system = captured.messages?.find(message => message.role === 'system')
+      expect(system?.content).toContain('## Writing code for run_code')
+      expect(system?.content).toContain('declare const tools')
+    } finally {
+      const closed = child.exitCode === null
+        ? new Promise<void>((resolveClose) => { child.once('close', () => { resolveClose() }) })
+        : Promise.resolve()
+      if (child.exitCode === null) child.kill('SIGTERM')
+      await closed
+      await new Promise<void>(resolveClose => provider.close(() => { resolveClose() }))
+      rmSync(workspace, { recursive: true, force: true })
+    }
+  })
 })

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+- text: "Turn 1 Message {{duration}} #1 User NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop. +{{duration}} Step 1 {{duration}} bash read×2 #2 Tool bash · {\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"} +{{duration}} #3 Tool read · {\"file_path\": \"nav-a.md\"} +{{duration}} #4 Tool read · {\"file_path\": \"nav-b.md\"} +{{duration}} Step 2 {{duration}} #5 Message FIRST_DONE 349 56 51 +{{duration}} Turn 2 Message {{duration}} #6 User Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop. +{{duration}} Step 1 {{duration}} #7 Message ## Navigation Summary - alpha nav - beta nav ``` echo WATERFALL ``` 141 36 16 +{{duration}}"
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+- text: 3 turns · 3 steps · 3 tool calls turn 0 turn 1 turn 2
@@ -0,0 +1,33 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Use the ask_user_question tool to ask me exactly one question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". After I answer, reply with the single word DONE and stop.
+- button "Think The user wants me to use the ask_user_question tool to ask a specific question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and options labeled \"Blue\" and \"Green\". Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask a specific question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". Let me do exactly that.
+- button:
+  - img
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\"}, {\"label\": \"Green\"}]}]}"
+- button "Think The user answered \"Blue\". I need to reply with the single word DONE and stop.":
+  - img
+  - text: Think The user answered "Blue". I need to reply with the single word DONE and stop.
+- paragraph: DONE
+- text: cache hit 99% · 15,978 tokens · 1 turns · 2 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
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@@ -0,0 +1,23 @@
+- region "Which color do you prefer?":
+  - text: Pick one
+  - heading "Which color do you prefer?" [level=2]
+  - text: 1 / 1
+  - button "上一题" [disabled]:
+    - img
+  - button "下一题" [disabled]:
+    - img
+  - button "放弃整组问题":
+    - img
+  - radiogroup:
+    - radio "Blue":
+      - text: 1 Blue
+      - img
+    - radio "Green":
+      - text: 2 Green
+      - img
+    - button "其他，请填写自定义答案":
+      - img
+      - text: 其他，请填写自定义答案
+  - status
+  - button "跳过本题"
+  - button "提交" [disabled]
@@ -0,0 +1,30 @@
+- dialog "设置":
+  - navigation:
+    - text: 设置
+    - button "通用设置":
+      - img
+      - text: 通用设置
+    - button "模型":
+      - img
+      - text: 模型
+  - button "关闭":
+    - img
+    - text: 关闭
+  - text: 权限 选择默认权限模式
+  - button "Read only" [disabled]:
+    - text: Read only
+    - img
+  - text: 工具调用 Schema mode Traditional function calling — invoke tools one at a time Code mode Chain multiple tools with code — multi-step orchestration 语言
+  - button "中文":
+    - text: 中文
+    - img
+  - text: 外观
+  - button "浅色":
+    - img
+    - text: 浅色
+  - button "深色":
+    - img
+    - text: 深色
+  - button "跟随系统" [pressed]:
+    - img
+    - text: 跟随系统
@@ -0,0 +1,39 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Use the ask_user_question tool to ask me exactly one question with id "checkpoint", question "Ready to continue?", header "Checkpoint", and options labeled "Yes" and "No". After I answer, reply with one short sentence acknowledging my answer and stop.
+- button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.
+- button
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]} 等待回答（1 题）"
+- button "▸ 问题内容"
+- text: 请在原客户端处理（web 端作答后续里程碑提供） cache hit 98% · 7,946 tokens · 1 turns · 1 steps
+- region "Ready to continue?":
+  - text: Checkpoint
+  - heading "Ready to continue?" [level=2]
+  - text: 1 / 1
+  - button "上一题" [disabled]:
+    - img
+  - button "下一题" [disabled]:
+    - img
+  - button "放弃整组问题":
+    - img
+  - radiogroup:
+    - radio "Yes":
+      - text: 1 Yes
+      - img
+    - radio "No":
+      - text: 2 No
+      - img
+    - button "其他，请填写自定义答案":
+      - img
+      - text: 其他，请填写自定义答案
+  - status
+  - button "跳过本题"
+  - button "提交" [disabled]
@@ -0,0 +1,144 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785004180013,"cwd":"{{cwd}}/workspace"}
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+{"type":"assistant/chunk","seq":115,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" final"}}}
+{"type":"assistant/chunk","seq":116,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" reply"}}}
+{"type":"assistant/chunk","seq":117,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":118,"time":1785004182655,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" Let"}}}
+{"type":"assistant/chunk","seq":119,"time":1785004182656,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" me"}}}
+{"type":"assistant/chunk","seq":120,"time":1785004182656,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" acknowledge"}}}
+{"type":"assistant/chunk","seq":121,"time":1785004182685,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" their"}}}
+{"type":"assistant/chunk","seq":122,"time":1785004182749,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" answer"}}}
+{"type":"assistant/chunk","seq":123,"time":1785004182749,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":124,"time":1785004182750,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":125,"time":1785004182750,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"Great"}}}
+{"type":"assistant/chunk","seq":126,"time":1785004182774,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":","}}}
+{"type":"assistant/chunk","seq":127,"time":1785004182774,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" let"}}}
+{"type":"assistant/chunk","seq":128,"time":1785004182802,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"'s"}}}
+{"type":"assistant/chunk","seq":129,"time":1785004182804,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" move"}}}
+{"type":"assistant/chunk","seq":130,"time":1785004182804,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" forward"}}}
+{"type":"assistant/chunk","seq":131,"time":1785004182831,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"."}}}
+{"type":"assistant/chunk","seq":132,"time":1785004182862,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" B"}}}
+{"type":"assistant/chunk","seq":133,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"AN"}}}
+{"type":"assistant/chunk","seq":134,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"ANA"}}}
+{"type":"assistant/chunk","seq":135,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"!"}}}
+{"type":"assistant/chunk","seq":136,"time":1785004182892,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."}}}}
+{"type":"assistant/chunk","seq":137,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Great, let's move forward. BANANA!"}}}}
+{"type":"assistant/chunk","seq":138,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}}}}
+{"type":"assistant/chunk","seq":139,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":140,"time":1785004182894,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."},{"type":"text","text":"Great, let's move forward. BANANA!"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}},"sourceEventSeqs":[94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139],"surfaceOp":"append"}
+{"type":"step/end","seq":141,"time":1785004182895,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":142,"time":1785004182895,"data":{"turn":1,"reason":{"kind":"completed"}}}
@@ -0,0 +1,33 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Use the ask_user_question tool to ask me exactly one question with id "checkpoint", question "Ready to continue?", header "Checkpoint", and options labeled "Yes" and "No". After I answer, reply with one short sentence acknowledging my answer and stop.
+- button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.
+- button:
+  - img
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]} 插话 Interjection: include the word BANANA in your final reply."
+- button "Think The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer.":
+  - img
+  - text: Think The user selected "Yes" and wants me to include the word "BANANA" in my final reply. Let me acknowledge their answer.
+- paragraph: Great, let's move forward. BANANA!
+- text: cache hit 98% · 15,967 tokens · 1 turns · 2 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]
@@ -0,0 +1,171 @@
+// Web e2e scenario: mid-turn steering, end to end. The composer locks while a
+// turn runs, so the product UI has no steering gesture yet — the steer is
+// POSTed from the page itself over the same same-origin /api transport the
+// client uses (TODO(web-steer-composer): drive this through a composer
+// gesture once one exists). Everything downstream is product: the gateway
+// routes mode:'steer' to Agent.steer, the loop drains it at the step
+// boundary into a durable steering/message event, the SSE mux pushes it, and
+// the transcript renders the badged interjection bubble. The question
+// composer supplies the deterministic mid-turn window: while ask_user_question
+// blocks, the turn is provably running, so record and replay perform the
+// identical steer-then-answer sequence with zero timing dependence — and the
+// recorded final reply proves the steer reached the MODEL (it obeys an
+// instruction that only the steering message carries).
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/steering', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// Two goldens for the two distinct states this interaction produces: the
+// mid-turn moment (steer ACCEPTED but deliberately invisible — the loop
+// drains steering at the step boundary, so no interjection bubble exists
+// while the question still blocks the step) and the settled transcript
+// (badged bubble in place, final reply obeying it). The pair pins the
+// timing semantics visually: if the client ever starts rendering pending
+// steers eagerly, the mid-steer golden flips first.
+const MID_EXPECTED = join(SNAPSHOT_DIR, 'mid-steer.expected.md')
+const SETTLED_EXPECTED = join(SNAPSHOT_DIR, 'settled.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = 'Use the ask_user_question tool to ask me exactly one question with id "checkpoint", question "Ready to continue?", header "Checkpoint", and options labeled "Yes" and "No". After I answer, reply with one short sentence acknowledging my answer and stop.'
+const STEER = 'Interjection: include the word BANANA in your final reply.'
+
+/** Concatenated assistant text deltas — the model-visible reply body. */
+function assistantText(events: SessionEvent[]): string {
+  return events
+    .filter(e => e.type === 'assistant/chunk')
+    .map((e) => {
+      const chunk = (e as SessionEvent & { data: { chunk: { type: string; text?: string } } }).data.chunk
+      return chunk.type === 'text-delta' ? chunk.text ?? '' : ''
+    })
+    .join('')
+}
+
+describe('web e2e: mid-turn steering lands durably and visibly', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let liveSessionId: string | undefined
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (session, event) => {
+      liveSessionId ??= session.id
+      sessionEvents.push(event)
+    })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('steers during the blocked step; the interjection is logged, rendered, and obeyed', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-steering'))
+    if (MODE !== 'record') {
+      // The steer must NOT be a user/message — it lands as steering/message.
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled(MODE === 'record' ? 180_000 : 30_000)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+
+    // The blocked composer is the mid-turn barrier: its presence proves the
+    // ask_user_question step is executing, i.e. the turn is running NOW.
+    const composer = page.locator('[data-question-key]')
+    await composer.waitFor({ timeout: MODE === 'record' ? 120_000 : 30_000 })
+
+    // Steer through the real wire from the page (same envelope + endpoint the
+    // web client's session.prompt uses). accepted:true is the transport proof.
+    expect(liveSessionId).toBeDefined()
+    const reply = await page.evaluate(async ({ sessionId, text }) => {
+      const response = await fetch('/api/session.prompt', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({
+          type: 'client-request',
+          rpcId: crypto.randomUUID(),
+          method: 'session.prompt',
+          payload: { sessionId, mode: 'steer', content: [{ type: 'text', text }] },
+        }),
+      })
+      return await response.json() as { result?: { ok?: boolean } }
+    }, { sessionId: liveSessionId!, text: STEER })
+    expect(reply.result?.ok).toBe(true)
+
+    if (MODE !== 'record') {
+      // Mid-turn golden: the ACCEPTED steer is durable in the inbox but the
+      // loop drains steering only at the step boundary, so no steering/message
+      // exists yet and no interjection bubble renders — the composer still
+      // blocks, alone. The DOM is stable here (no further SSE frames can
+      // arrive until the question is answered), making this state capturable.
+      expect(await page.getByText('插话').count()).toBe(0)
+      const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(MID_EXPECTED, snapshot, MODE)
+    }
+
+    // Answer the composer; the tool result closes the step, the loop drains
+    // the steer as steering/message, and the steered continuation runs the
+    // final model call.
+    await composer.getByRole('radio', { name: 'Yes' }).click()
+    await composer.getByRole('radio', { name: 'Yes' }).press('Enter')
+    await settled
+
+    if (MODE === 'record') {
+      const sessionId = await settled
+      await recordFixture(scaffold, sessionId, FIXTURE)
+      // Fixture honesty: a recording where the live model ignored the steer
+      // would replay as a vacuous scenario — reject it and re-record instead.
+      const recorded = parseSessionLog(await readFile(FIXTURE, 'utf8'))
+      expect(recorded.filter(e => e.type === 'steering/message')).toHaveLength(1)
+      expect(assistantText(recorded)).toContain('BANANA')
+      return
+    }
+
+    // Durable: exactly one steering/message, inside turn 1, carrying the text.
+    const steerEvents = sessionEvents.filter(e => e.type === 'steering/message')
+    expect(steerEvents).toHaveLength(1)
+    expect((steerEvents[0] as SessionEvent & { data: { turn: number } }).data.turn).toBe(1)
+    expect(JSON.stringify(steerEvents[0])).toContain('BANANA')
+    const turnEnds = sessionEvents.filter(e => e.type === 'turn/end')
+    expect(turnEnds).toHaveLength(1)
+    expect((turnEnds[0] as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind).toBe('completed')
+
+    // Visible: the badged interjection bubble plus the reply that obeys it
+    // (steer text + final reply each contain the marker word).
+    await expect.poll(() => page.getByText('插话').count(), { timeout: 15_000 }).toBe(1)
+    await expect.poll(() => page.getByText('Interjection:', { exact: false }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('BANANA', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    expect(await page.locator('[data-question-key]').count()).toBe(0)
+    // Settled golden: badge + interjection between the question round trip
+    // and the obeying reply, composer takeover gone.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(SETTLED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'mid-steer.expected.md', 'settled.expected.md'])
+  })
+})
@@ -0,0 +1,160 @@
+// Web e2e scenarios: workspace management — the create-by-name dialog, the
+// rename round trip over the real wire (workspace.rename RPC + durable
+// registry), duplicate-name pre-check, the flat "In one list" view with its
+// persisted group-by preference, and the session hover card. Zero model
+// calls: workspace.create/rename are host RPCs with no model involvement,
+// and the one session row the flat/hover scenarios need comes from a seeded
+// fixture (the seeded-history seed reused verbatim — no new recording).
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, launchWebScaffold, seedSession, watchConsole,
+  webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/workspace-management', import.meta.url))
+// The seed is another scenario's committed fixture, reused read-only: this
+// spec needs any one cold session row, not new recorded content.
+const SEED = fileURLToPath(new URL('./snapshots/seeded-history/seed.jsonl', import.meta.url))
+const MODE = webSnapshotMode()
+const SEED_ID = 'workspace-management-web-e2e'
+
+describe('web e2e: workspace management (create / rename / flat view / hover card)', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    // Seed one cold session (Ungrouped bucket) for the flat view + hover card.
+    const sessionCwd = join(scaffold.workspaceCwd, 'workspace')
+    await mkdir(sessionCwd, { recursive: true })
+    await writeFile(join(sessionCwd, 'a.txt'), 'alpha\n')
+    await writeFile(join(sessionCwd, 'b.txt'), 'beta\n')
+    await seedSession(scaffold, await readFile(SEED, 'utf8'), SEED_ID)
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('creates two workspaces by name through the region-header dialog', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-create'))
+    const createByName = async (name: string): Promise<void> => {
+      await page.getByRole('button', { name: 'Create workspace' }).click()
+      // The pick menu's Create workspace submenu opens on hover/focus.
+      await page.getByRole('menuitem', { name: 'Create workspace' }).hover()
+      await page.getByRole('menuitem', { name: 'Create a new workspace' }).click()
+      const dialog = page.getByRole('dialog', { name: 'Create a new workspace' })
+      await dialog.waitFor({ timeout: 10_000 })
+      await dialog.getByLabel('New workspace name').fill(name)
+      await dialog.getByRole('button', { name: 'Create workspace' }).click()
+      await expect.poll(() => page.getByRole('dialog', { name: 'Create a new workspace' }).count(), { timeout: 10_000 }).toBe(0)
+      // The real workspace materializes in the tree as a group row.
+      await expect.poll(() => page.getByText(name, { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    }
+    await createByName('alpha-ws')
+    await createByName('beta-ws')
+    // Durable on the host: both registered, newest first (create prepends).
+    const titles = scaffold.ctx.workspace.list().map(workspace => workspace.title)
+    expect(titles.slice(0, 2)).toEqual(['beta-ws', 'alpha-ws'])
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('renames a workspace over the wire with a duplicate-name pre-check', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-rename'))
+    // The actions button is display:none until its row hovers — hover the
+    // group row first, then the revealed button becomes actionable.
+    await page.locator('[role="treeitem"]').filter({ hasText: 'alpha-ws' }).first().hover()
+    await page.getByRole('button', { name: 'Workspace actions for alpha-ws' }).click()
+    await page.getByRole('menuitem', { name: 'Rename' }).click()
+    const dialog = page.getByRole('dialog', { name: 'Rename workspace' })
+    await dialog.waitFor({ timeout: 10_000 })
+    const input = dialog.getByLabel('Workspace name')
+    // Client pre-check: a name colliding with another live workspace raises
+    // the inline alert and blocks the primary button before any wire call.
+    await input.fill('beta-ws')
+    await expect.poll(() => dialog.getByRole('alert').count(), { timeout: 5_000 }).toBe(1)
+    expect(await dialog.getByRole('button', { name: 'Rename' }).isDisabled()).toBe(true)
+    // A fresh name goes through workspace.rename to the durable registry.
+    await input.fill('gamma-ws')
+    await expect.poll(() => dialog.getByRole('alert').count(), { timeout: 5_000 }).toBe(0)
+    await dialog.getByRole('button', { name: 'Rename' }).click()
+    await expect.poll(() => page.getByRole('dialog', { name: 'Rename workspace' }).count(), { timeout: 10_000 }).toBe(0)
+    await expect.poll(() => page.getByText('gamma-ws', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(await page.getByText('alpha-ws', { exact: true }).count()).toBe(0)
+    // Host durability, then reload: the projection is rebuilt from the wire.
+    expect(scaffold.ctx.workspace.list().map(workspace => workspace.title)).toContain('gamma-ws')
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await expect.poll(() => page.getByText('gamma-ws', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('switches to the flat "In one list" view and persists the preference', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-flat'))
+    // Grouped default: workspace group rows render (the seeded session sits
+    // under Ungrouped; the created workspaces are empty groups).
+    await expect.poll(() => page.getByText('Workspaces', { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await page.getByRole('button', { name: 'Group by' }).click()
+    await page.getByRole('menuitem', { name: 'In one list' }).click()
+    // Flat mode: the section label flips and the seeded session is a
+    // top-level row with no group headers above it.
+    await expect.poll(() => page.getByText('Sessions', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 5_000 }).toBe(0)
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(await page.evaluate(() => localStorage.getItem('dsh.workspace.view'))).toContain('flat')
+    // Persisted across reload; then restore grouped for inter-spec hygiene.
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 15_000 }).toBe(0)
+    await page.getByRole('button', { name: 'Group by' }).click()
+    await page.getByRole('menuitem', { name: 'WorkSpace' }).click()
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('shows the session hover card after a dwell on the row', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-hover'))
+    // Expand Ungrouped to reveal the seeded session row, then dwell on it
+    // (the card opens after a 500ms hover delay, portaled to body).
+    await page.getByText('Ungrouped', { exact: true }).click()
+    // A cold summary carries no durable title, so the row falls back to a
+    // cwd-derived display title — anchored on the run-local workspace-root
+    // basename rather than a literal.
+    const wsBase = scaffold.workspaceCwd.split('/').pop()!
+    const sessionRow = page.locator('[role="treeitem"]').filter({ hasText: wsBase }).first()
+    await sessionRow.waitFor({ timeout: 10_000 })
+    await sessionRow.hover()
+    // Card content: the full title plus the Idle status line (display-only
+    // card; no aria role — text anchors are the stable selector).
+    await expect.poll(() => page.getByText('Idle', { exact: true }).count(), { timeout: 5_000 }).toBeGreaterThanOrEqual(1)
+    // Leaving the anchor closes it with no delay.
+    await page.getByRole('button', { name: '设置' }).hover()
+    await expect.poll(() => page.getByText('Idle', { exact: true }).count(), { timeout: 5_000 }).toBe(0)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', async () => {
+    expect(tripwire.warnings).toEqual([])
+    // This spec mints no fixture directory contents of its own; the seed it
+    // reuses is owned (and inventory-guarded) by seeded-history.
+    await assertFixtureInventory(SNAPSHOT_DIR, ['.gitkeep'])
+  })
+})
@@ -23,8 +23,16 @@
  // cannot see both sides of the cordis Context merges).
  "exclude": [
    "tests/scaffold.ts",
+    "tests/live-interactions.e2e.ts",
+    "tests/question-composer.e2e.ts",
+    "tests/steering.e2e.ts",
+    "tests/navigation-panes.e2e.ts",
+    "tests/lifecycle-chrome.e2e.ts",
+    "tests/settings-chrome.e2e.ts",
+    "tests/workspace-management.e2e.ts",
    "tests/replay-round-trip.e2e.ts",
-    "tests/seeded-history.e2e.ts"
+    "tests/seeded-history.e2e.ts",
+    "tests/code-mode-round.e2e.ts"
  ],
  "references": [
    {
@@ -688,7 +688,7 @@ export interface ReplayModelConfig {
 }
 ```

-Source: [`packages/support/llm-replay/src/index.ts:459`](../packages/support/llm-replay/src/index.ts)
+Source: [`packages/support/llm-replay/src/index.ts:590`](../packages/support/llm-replay/src/index.ts)

 ## `@deepseek-ai/dsh-llm-retry`

@@ -1704,6 +1704,14 @@ export interface Config {
   * absent or mismatched. Under `code`, native names in `toolOrder` are invalid.
   */
  mode?: ToolPresentationMode
+  /**
+   * Concurrency cap for a `run_code` program's overlapping sub-calls
+   * (default 10, the loop scheduler's own default). Sub-calls follow the
+   * native scheduling contract — only calls whose tools classify
+   * concurrency-safe overlap; exclusive calls form barriers — so `1`
+   * restores strictly serial dispatch. Must be a positive integer.
+   */
+  maxParallelSubCalls?: number
 }

 /** How the registry presents its tools to the model (see {@link Config.mode}). */
@@ -1855,7 +1855,7 @@ async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>

 Types: [ScopeKey](../core-data-structures/scope.md) · [ToolDefinition](../core-data-structures/tools.md) · [ToolExecutionInput](../core-data-structures/tools.md) · [ToolExecutionMode](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolGuard](../core-data-structures/tools.md) · [ToolRestriction](../core-data-structures/tools.md) · [ToolSchema](../core-data-structures/tools.md)

-Source: [`packages/core/tools/src/index.ts:634`](../../packages/core/tools/src/index.ts)
+Source: [`packages/core/tools/src/index.ts:651`](../../packages/core/tools/src/index.ts)

 ## `ctx.tui` — `TuiExtensionService` (abstract seam)

@@ -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
-tools.md: 4a8081154a12a0d30e90f8b4df059ddc4257bba0
-tools.zh.md: 74f543548a54e532d1a858dee33bed906e82f4b3
+tools.md: 875bea18ff0c34ca97f9c144f4320d3b3a6aaa4a
+tools.zh.md: 11f0b8d4a0f29304e6fdbde7c81be981bd940a2d
@@ -313,7 +313,7 @@ interface ToolExecutionFailure {
 type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure
 ```

-The result carries only the outcome. Call identity remains on the immutable `ToolExecution` that accompanies it through every hook and on the durable `tool/call` / `tool/result` session events, so wrappers cannot create a second, disagreeing identity. The canonical `value` is execution-local: the loop persists only `content`, `error`, and `meta`, while `tool/code-dispatch` stores a bounded summary. Replay reproduces presentation but cannot reconstruct intermediate values.
+The result carries only the outcome. Call identity remains on the immutable `ToolExecution` that accompanies it through every hook and on the durable `tool/call` / `tool/result` session events, so wrappers cannot create a second, disagreeing identity. The canonical `value` is execution-local: the loop persists only `content`, `error`, and `meta`, while `tool/code-dispatch` stores the sub-call's rendered `content` and `isError` verbatim. Replay reproduces presentation but cannot reconstruct canonical intermediate values.

 On success the registry snapshots and validates the body value, freezes it, and invokes the pure renderer plus the optional direct-surface metadata projector. It separately materializes the durable presentation fields immediately before `tools/result`; an invalid value, renderer/projector failure, or non-JSON presentation becomes a JSON-safe `isError`. The final live observer therefore sees the exact execution-local value beside fields safe for the later durable append.

@@ -313,7 +313,7 @@ interface ToolExecutionFailure {
 type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure
 ```

-结果仅承载产出。调用身份保留在不可变的 `ToolExecution` 上，后者伴随结果经过每个钩子，并出现在持久化的 `tool/call` / `tool/result` 会话事件上，因此包装层无法创建第二个相互矛盾的身份。规范的 `value` 仅存在于执行期间：循环只持久化 `content`、`error` 和 `meta`，`tool/code-dispatch` 则存储有界摘要。回放可以重现展示，却无法重建中间值。
+结果仅承载产出。调用身份保留在不可变的 `ToolExecution` 上，后者伴随结果经过每个钩子，并出现在持久化的 `tool/call` / `tool/result` 会话事件上，因此包装层无法创建第二个相互矛盾的身份。规范的 `value` 仅存在于执行期间：循环只持久化 `content`、`error` 和 `meta`，`tool/code-dispatch` 则原样存储子调用渲染后的 `content` 与 `isError`。回放可以重现展示，却无法重建规范的中间值。

 成功时，注册表会快照并校验函数体返回值，将其冻结，然后调用纯渲染器；对于直接的外层调用，还会调用可选的元数据投影器。注册表会在 `tools/result` 之前另行物化持久展示字段；无效值、渲染器/投影器失败或非 JSON 展示都会转为 JSON 安全的 `isError`。因此，最终实时观察者能看到精确的执行期值，以及可安全用于后续持久追加的字段。

@@ -455,26 +455,49 @@ Source: [`packages/core/session/src/types.ts:283`](../packages/core/session/src/

 ```ts persistence-catalog
 /**
- * One bridged sub-dispatch from a `run_code` program: the parent
- * `run_code` call id, the deterministic sub-call id
- * (`<parent>:code:<n>`), the tool `name` with its JSON-normalized
- * `arguments` — the exact value dispatched, normalized BEFORE dispatch,
- * so this append can never fail on payload shape — whether the sub-call
- * errored, and a bounded `resultSummary` of its model-facing text. Before
- * bounding, occurrences of a non-root session workspace path are
- * normalized to `.` so host-specific absolute path lengths cannot change
- * the summary.
+ * One bridged sub-dispatch SETTLING: the pairing ids (matching the
+ * `tool/code-dispatch-start` with the same `subCallId`), the tool `name`
+ * with the same JSON-normalized `arguments`, and the sub-call's complete
+ * model-facing outcome in `tool/result`'s own vocabulary
+ * (`content` + `isError`), so UIs render a sub-call through the exact
+ * code path that renders a native call. Every started sub-call settles
+ * with exactly one of these (abort included: the aborted pipeline result
+ * is an `isError` outcome).
 * Log-only: `deriveMessages()` ignores it, so sub-calls never re-enter
 * model context; persistence and UIs get every call. Appended inside the
- * parent `run_code`'s execution (the bridge drains its queue before
- * returning), so the turn-enclosure invariant holds by construction.
+ * parent `run_code`'s execution (the bridge drains in-flight dispatches
+ * before returning), so the turn-enclosure invariant holds by
+ * construction.
 */
-'tool/code-dispatch': { parentCallId: CallId; subCallId: CallId; name: string; arguments: unknown; isError: boolean; resultSummary: string }
+'tool/code-dispatch': { parentCallId: CallId; subCallId: CallId; name: string; arguments: unknown; isError: boolean; content: ContentBlock[] }
+```
+
+Types: [CallId](core-data-structures/core.md) · [ContentBlock](core-data-structures/core.md)
+
+Source: [`packages/core/tools/src/code-mode.ts:49`](../packages/core/tools/src/code-mode.ts)
+
+#### `tool/code-dispatch-start` — log-only
+
+```ts persistence-catalog
+/**
+ * One sub-dispatch STARTING inside a `run_code` program: the parent
+ * `run_code` call id, the deterministic sub-call id (`<parent>:code:<n>`,
+ * numbered in submission order), and the tool `name` with its
+ * JSON-normalized `arguments` — the exact value dispatched, normalized
+ * BEFORE dispatch, so this append can never fail on payload shape.
+ * Appended when the scheduler actually starts the call (not at
+ * submission), so a start means the tool body pipeline was entered; a
+ * call abandoned in the queue logs nothing. Log-only: `deriveMessages()`
+ * ignores it; UIs use it for live per-sub-call running state and pair it
+ * with `tool/code-dispatch` by `subCallId` (timing = the two events'
+ * `time` fields).
+ */
+'tool/code-dispatch-start': { parentCallId: CallId; subCallId: CallId; name: string; arguments: unknown }
 ```

 Types: [CallId](core-data-structures/core.md)

-Source: [`packages/core/tools/src/code-mode.ts:34`](../packages/core/tools/src/code-mode.ts)
+Source: [`packages/core/tools/src/code-mode.ts:33`](../packages/core/tools/src/code-mode.ts)

 #### `tool/result` — surface

@@ -16,7 +16,7 @@ This table connects model-visible tool names to the plugin package and service s
 | Tool package | Model-visible names | Requires | Writes / affects | Shipped aliases | Deployment note |
 | --- | --- | --- | --- | --- | --- |
 | `@deepseek-ai/dsh-tool-ask-user` | `ask_user_question` | `ctx.tools`, `ctx.userInteraction` | `tool/call`, `tool/result after a UI/provider answers the question` | - | ask_user_question pauses the tool call until the active UI provider returns a human answer. |
-| `@deepseek-ai/dsh-tools` | `run_code` | `ctx.tools`, `ctx.codeRuntime (execution time)`, `ctx.systemPrompt` | `tool/call`, `one tool/code-dispatch per bridged sub-call`, `tool/result` | - | Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through serialized bindings that re-enter the complete guarded tool pipeline and link each nested execution to this outer result. |
+| `@deepseek-ai/dsh-tools` | `run_code` | `ctx.tools`, `ctx.codeRuntime (execution time)`, `ctx.systemPrompt` | `tool/call`, `one tool/code-dispatch-start + tool/code-dispatch pair per bridged sub-call`, `tool/result` | - | Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result. |
 | `@deepseek-ai/dsh-plan-mode` | `exit_plan_mode` | `ctx.tools`, `ctx.systemPrompt`, `ctx.userInteraction (execution time, opportunistic)` | `tool/call`, `plan/mode inactive on an approved review`, `tool/result` | - | exit_plan_mode stays in the model-facing schema while planning is inactive so transitions add no tool-catalog churn on top of the plan-policy change. Its execute path rejects calls outside plan mode; in plan mode it presents the plan over the user-interaction seam (approve / keep planning with feedback), and approval logs plan mode inactive at the step boundary. |
 | `@deepseek-ai/dsh-tool-bash` | `bash` | `ctx.tools`, `ctx.bash`, `ctx.tasks at call time for run_in_background` | `tool/call`, `tool/result` | - | The bash tool is the model-facing consumer of the bash executor seam. A `run_in_background` run registers with the generic `ctx.tasks` runtime and is collected/stopped through the `task_*` tools from `@deepseek-ai/dsh-tool-tasks`; the `enableRunInBackground` config (default true) removes the parameter entirely when disabled. |
 | `@deepseek-ai/dsh-tool-cordis` | `cordis_inspect`, `cordis_mount`, `cordis_unmount` | `ctx.tools` | `tool/call`, `tool/result`, `live plugin-tree mutations (mount/unmount)` | - | Ships in examples/cordis-agent only (a deliberate opt-in — mounted code gets the real ctx, see .agents/notes/implemented/feature/2026-07-08-self-referential-cordis-toolset.md). Plugins the model mounts may register ADDITIONAL model-visible tools at runtime; a full changed request header logs those tool-set changes. |
@@ -119,17 +119,22 @@ Execute a TypeScript program against the available tools. Write the BODY of an a
    "code": {
      "type": "string",
      "description": "The program: the body of an async TypeScript function."
+    },
+    "description": {
+      "type": "string",
+      "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
    }
  },
  "required": [
-    "code"
+    "code",
+    "description"
  ]
 }
 ```

 Source: [`packages/core/tools/src/code-mode.ts`](../packages/core/tools/src/code-mode.ts)

-Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through serialized bindings that re-enter the complete guarded tool pipeline and link each nested execution to this outer result.
+Owned by the tool registry as a reserved transport outside filterable capability layers under `mode: code` / `mode: both` (see the Code Mode Agent Note). Under `code` it is the registry's only wire contribution; the other visible capabilities are declared in a generated TypeScript SDK section, and a program calls them through bindings scheduled under the native concurrency contract (submission-ordered starts and policy; concurrency-safe bodies overlap up to `maxParallelSubCalls`) that re-enter the complete guarded tool pipeline and link each nested execution to this outer result.

 ## `@deepseek-ai/dsh-plan-mode`

@@ -15,51 +15,52 @@
 {"type":"step/end","seq":13,"time":1783957884489,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":14,"time":1783957884489,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":15,"time":1783950000015,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":16,"time":1783950000016,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}
-{"type":"assistant/chunk","seq":17,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}
+{"type":"assistant/chunk","seq":16,"time":1783950000016,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Run the scripted inspection program\"}"}}}
+{"type":"assistant/chunk","seq":17,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Run the scripted inspection program\"}"}}}}
 {"type":"assistant/chunk","seq":18,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
 {"type":"assistant/chunk","seq":19,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
-{"type":"tool/call","seq":21,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}
-{"type":"tool/code-dispatch","seq":22,"time":1783957884560,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"dynamic"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}
-{"type":"tool/result","seq":23,"time":1783957884561,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false},"sourceEventSeqs":[21],"surfaceOp":"append"}
-{"type":"step/end","seq":24,"time":1783957884561,"data":{"turn":1,"step":2}}
-{"type":"step/start","seq":25,"time":1783957884562,"data":{"turn":1,"step":3}}
-{"type":"assistant/chunk","seq":26,"time":1783950000026,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":27,"time":1783950000027,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
-{"type":"assistant/chunk","seq":28,"time":1783950000028,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
-{"type":"assistant/chunk","seq":29,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":30,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":31,"time":1783957884562,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}
-{"type":"tool/call","seq":32,"time":1783957884562,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
-{"type":"tool/result","seq":33,"time":1783957884593,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false},"sourceEventSeqs":[32],"surfaceOp":"append"}
-{"type":"step/end","seq":34,"time":1783957884593,"data":{"turn":1,"step":3}}
-{"type":"step/start","seq":35,"time":1783957884594,"data":{"turn":1,"step":4}}
-{"type":"assistant/chunk","seq":36,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":37,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-workflow","name":"workflow","argumentsDelta":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}
-{"type":"assistant/chunk","seq":38,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}}
-{"type":"assistant/chunk","seq":39,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":41,"time":1783957884594,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[36,37,38,39,40],"surfaceOp":"append"}
-{"type":"tool/call","seq":42,"time":1783957884594,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}
-{"type":"tool/result","seq":43,"time":1783957884717,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-acp-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[42],"surfaceOp":"append"}
-{"type":"step/end","seq":44,"time":1783957884718,"data":{"turn":1,"step":4}}
-{"type":"step/start","seq":45,"time":1783957884718,"data":{"turn":1,"step":5}}
-{"type":"assistant/chunk","seq":46,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":47,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-unmount","name":"cordis_unmount","argumentsDelta":"{\"id\":\"dyn-1\"}"}}}
-{"type":"assistant/chunk","seq":48,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
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@@ -30,7 +30,7 @@ Pass `run_code` the body of an async TypeScript function (erasable syntax only

 - Call tools as `await tools.name(args)` — quoted access for exotic names: `tools["my-tool"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.
 - A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.
- Calls execute sequentially, even under `Promise.all`.
+- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.
 - Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.

 The available tools:
@@ -225,10 +225,15 @@
          "code": {
            "type": "string",
            "description": "The program: the body of an async TypeScript function."
+          },
+          "description": {
+            "type": "string",
+            "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
          }
        },
        "required": [
-          "code"
+          "code",
+          "description"
        ]
      }
    },
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@@ -30,7 +30,7 @@ Pass `run_code` the body of an async TypeScript function (erasable syntax only

 - Call tools as `await tools.name(args)` — quoted access for exotic names: `tools["my-tool"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.
 - A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.
- Calls execute sequentially, even under `Promise.all`.
+- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.
 - Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.

 The available tools:
@@ -168,10 +168,15 @@
          "code": {
            "type": "string",
            "description": "The program: the body of an async TypeScript function."
+          },
+          "description": {
+            "type": "string",
+            "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
          }
        },
        "required": [
-          "code"
+          "code",
+          "description"
        ]
      }
    },
@@ -30,7 +30,7 @@ Pass `run_code` the body of an async TypeScript function (erasable syntax only

 - Call tools as `await tools.name(args)` — quoted access for exotic names: `tools["my-tool"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.
 - A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.
- Calls execute sequentially, even under `Promise.all`.
+- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.
 - Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.

 The available tools:
@@ -9,10 +9,15 @@
          "code": {
            "type": "string",
            "description": "The program: the body of an async TypeScript function."
+          },
+          "description": {
+            "type": "string",
+            "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
          }
        },
        "required": [
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@@ -30,7 +30,7 @@ Pass `run_code` the body of an async TypeScript function (erasable syntax only

 - Call tools as `await tools.name(args)` — quoted access for exotic names: `tools["my-tool"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.
 - A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.
- Calls execute sequentially, even under `Promise.all`.
+- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.
 - Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.

 The available tools:
@@ -9,10 +9,15 @@
          "code": {
            "type": "string",
            "description": "The program: the body of an async TypeScript function."
+          },
+          "description": {
+            "type": "string",
+            "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
          }
        },
        "required": [
-          "code"
+          "code",
+          "description"
        ]
      }
    }
@@ -129,8 +129,8 @@
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 {"type":"tool/call","seq":129,"time":1784821261754,"data":{"turn":1,"step":1,"callId":"call_00_d0sAHpJ9mYOJi0z7KNy30441","name":"bash","arguments":"{\"command\": \"printf 'escalated\\\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt\", \"description\": \"Write file outside workspace and verify\", \"sandbox_permissions\": \"danger-full-access\", \"justification\": \"the user asked to write a file outside the workspace\"}"}}
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-{"type":"approval/decided","seq":131,"time":1784821261759,"data":{"id":"bc159170-7ce0-4162-a6c4-ed41d4ca582f","outcome":"allowed-once"}}
+{"type":"approval/asked","seq":130,"time":1784821261758,"data":{"id":"8e278621-09a9-4c76-a785-74aea76cc120","toolName":"bash","callId":"call_00_d0sAHpJ9mYOJi0z7KNy30441","reason":"escalate sandbox to danger-full-access: the user asked to write a file outside the workspace"}}
+{"type":"approval/decided","seq":131,"time":1784821261759,"data":{"id":"8e278621-09a9-4c76-a785-74aea76cc120","outcome":"allowed-once"}}
 {"type":"tool/result","seq":132,"time":1784821261775,"data":{"turn":1,"step":1,"callId":"call_00_d0sAHpJ9mYOJi0z7KNy30441","content":[{"type":"text","text":"escalated\n"}],"isError":false},"sourceEventSeqs":[129],"surfaceOp":"append"}
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@@ -153,8 +153,8 @@
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-{"type":"approval/decided","seq":155,"time":1784821263301,"data":{"id":"ad9d426a-bcd7-42df-8ad4-9f4ae8eb160c","outcome":"rejected"}}
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 {"type":"tool/result","seq":156,"time":1784821263302,"data":{"turn":1,"step":1,"callId":"call_00_WB1vnPomi8yr6MlcFKTj7912","content":[{"type":"text","text":"Error: the user rejected escalating this command to \"danger-full-access\""}],"isError":true},"sourceEventSeqs":[153],"surfaceOp":"append"}
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@@ -87,9 +87,9 @@
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+{"type":"tool/result","seq":90,"time":1784821264906,"data":{"turn":1,"step":1,"callId":"call_00_Fnymmavpr4klMDy4Fdej3227","content":[{"type":"text","text":"<path>/var/folders/2g/b32ct0qn1d728l_v6tdkjytr0000gn/T/acp-snap-cwd-vmEGzd/escalated.md</path>\n<type>file</type>\n<content>\nCreated file\n</content>"}],"isError":false,"meta":{"diffs":[]}},"sourceEventSeqs":[87],"surfaceOp":"append"}
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@@ -56,8 +56,8 @@
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-{"type":"approval/decided","seq":58,"time":1783962235813,"data":{"id":"e5dc594b-3ffa-4390-848c-e10b81550c68","outcome":"rejected"}}
+{"type":"approval/asked","seq":57,"time":1783962235813,"data":{"id":"8a5510f4-93b7-4e70-b082-20d13dec386d","toolName":"bash","callId":"call_00_6k0oGSliVHxGSgqBmMEO4311","reason":"bash requires manual approval in this session"}}
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@@ -85,7 +85,7 @@ function runCode(harness: Context, code: string, signal: AbortSignal = testToolS
  return harness.tools.execute({
    callId: CallId(`keyless-code-${++keylessCall}`),
    name: RUN_CODE_NAME,
-    arguments: { code },
+    arguments: { code, description: 'Run the e2e program' },
    signal,
  })
 }
@@ -14,52 +14,53 @@
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-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}
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-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
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-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":41,"time":0,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[36,37,38,39,40],"surfaceOp":"append"}}
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-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":43,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[42],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":44,"time":0,"data":{"turn":1,"step":4}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":45,"time":0,"data":{"turn":1,"step":5}}}
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@@ -1,7 +1,7 @@
-terminal 100x36 buffer=normal length=38 base=2 viewport=2
+terminal 100x36 buffer=normal length=64 base=28 viewport=28
 lifecycle started=1 stopped=0 progress=inactive
 title "Using ONE run_code program: call — DSH TUI snapshot"
-cursor hidden column=1 viewportRow=31 bufferRow=33
+cursor hidden column=1 viewportRow=33 bufferRow=61
 buffer
 0| " DEEPSEEK HARNESS"
  style 1-8 fg=bright-blue bold
@@ -32,58 +32,105 @@ buffer
 11| " Reasoning                                                                                          "
  style 1-9 fg=bright-black italic
 12| " The user wants me to write a single run_code program that:                                         "
-  style 1-58 fg=bright-black italic
+  style 1-36 fg=bright-black italic
+  style 37-44 fg=cyan
+  style 45-58 fg=bright-black italic
 13| " 1. Calls bash tool twice - first with echo CODE_ONE, then with echo CODE_TWO                       "
  style 1-3 fg=bright-blue
-  style 4-38 fg=bright-black italic
+  style 4-9 fg=bright-black italic
+  style 10-13 fg=cyan
+  style 14-38 fg=bright-black italic
  style 39-51 fg=cyan
  style 52-63 fg=bright-black italic
  style 64-76 fg=cyan
 14| " 2. console.log exactly captured output                                                             "
  style 1-3 fg=bright-blue
-  style 4-23 fg=bright-black italic
+  style 4-14 fg=cyan
+  style 15-23 fg=bright-black italic
  style 24-38 fg=cyan
-15| " 3. Return the two outputs joined with a plus sign                                                  "
+15| " 3. Returns the two outputs joined with a plus sign                                                 "
  style 1-3 fg=bright-blue
-  style 4-49 fg=bright-black italic
+  style 4-50 fg=bright-black italic
 16| "                                                                                                    "
-17| " Let me write this carefully.                                                                       "
-  style 1-28 fg=bright-black italic
-18| <blank>
-19| "▌ "
+17| " Let me think about the structure. The bash tool returns an object with stdout/stderr. I need to    "
+  style 1-38 fg=bright-black italic
+  style 39-42 fg=cyan
+  style 43-99 fg=bright-black italic
+18| " extract the stdout text from each call.                                                            "
+  style 1-39 fg=bright-black italic
+19| "                                                                                                    "
+20| " Looking at the bash output type:                                                                   "
+  style 1-32 fg=bright-black italic
+21| "                                                                                                    "
+22| " ```                                                                                                "
+  style 1-3 dim
+23| "   {                                                                                                "
+24| "     kind: \"foreground\";                                                                            "
+25| "     exitCode: number | null;                                                                       "
+26| "     signal: string | null;                                                                         "
+27| "     timedOut: boolean;                                                                             "
+28| "     aborted: boolean;                                                                              "
+29| "     timeoutMs: number;                                                                             "
+30| "     stdout: {                                                                                      "
+31| "       text: string;                                                                                "
+32| "       truncated: boolean;                                                                          "
+33| "       spillPath?: string;                                                                          "
+34| "     };                                                                                             "
+35| "     stderr: { ... };                                                                               "
+36| "     sandbox?: { ... };                                                                             "
+37| "   }                                                                                                "
+38| " ```                                                                                                "
+  style 1-3 dim
+39| "                                                                                                    "
+40| " So I need to access .stdout.text from each result.                                                 "
+  style 1-20 fg=bright-black italic
+  style 21-32 fg=cyan
+  style 33-50 fg=bright-black italic
+41| "                                                                                                    "
+42| " Let me write the program.                                                                          "
+  style 1-25 fg=bright-black italic
+43| <blank>
+44| "▌ "
  style 0-0 fg=green
-20| "▌ ✓ const result1 = await tools.bash({ command: \"echo CODE_ONE\", description: \"First echo\" });      "
+45| "▌ ✓ Call bash twice, log, join outputs                                                              "
  style 0-0 fg=green
  style 2-2 fg=green bold
-  style 3-99 bold
-21| "▌ cons                                                                                              "
+  style 3-37 bold
+46| "▌ captured output                                                                                   "
  style 0-0 fg=green
-  style 2-5 bold
-22| "▌ captured output                                                                                   "
+47| "▌ CODE_ONE+CODE_TWO                                                                                 "
  style 0-0 fg=green
-23| "▌ CODE_ONE+CODE_TWO                                                                                 "
+48| "▌ "
  style 0-0 fg=green
-24| "▌ "
-  style 0-0 fg=green
-25| <blank>
-26| " Reasoning                                                                                          "
+49| <blank>
+50| " Reasoning                                                                                          "
  style 1-9 fg=bright-black italic
-27| " The user asked me to reply with that joined string only and stop. The joined string is             "
+51| " The program ran successfully. The output shows:                                                    "
+  style 1-47 fg=bright-black italic
+52| " - captured output (from console.log)                                                               "
+  style 1-2 fg=bright-blue
+  style 3-17 fg=cyan
+  style 18-36 fg=bright-black italic
+53| " - CODE_ONE+CODE_TWO (the returned joined string)                                                   "
+  style 1-2 fg=bright-blue
+  style 3-19 fg=cyan
+  style 20-48 fg=bright-black italic
+54| "                                                                                                    "
+55| " The user asked me to reply with that joined string only and stop. So I'll reply with just          "
  style 1-99 fg=bright-black italic
-28| " CODE_ONE+CODE_TWO.                                                                                 "
+56| " CODE_ONE+CODE_TWO.                                                                                 "
  style 1-17 fg=cyan
  style 18-18 fg=bright-black italic
-29| <blank>
-30| " Assistant                                                                                          "
+57| <blank>
+58| " Assistant                                                                                          "
  style 1-9 fg=bright-magenta bold
-31| " CODE_ONE+CODE_TWO                                                                                  "
-32| "────────────────────────────────────────────────────────────────────────────────────────────────────"
+59| " CODE_ONE+CODE_TWO                                                                                  "
+60| "────────────────────────────────────────────────────────────────────────────────────────────────────"
  style 0-99 dim
-33| "                                                                                                    "
+61| "                                                                                                    "
  style 1-1 inverse
-34| "────────────────────────────────────────────────────────────────────────────────────────────────────"
+62| "────────────────────────────────────────────────────────────────────────────────────────────────────"
  style 0-99 dim
-35| "deepseek-v4-flash  /workspace/project  ↑4.1k ↓227  cache 53%  4% context  tools:"
-  style 0-79 dim
-  style 82-99 dim
-36-37| <blank>
+63| "deepseek-v4-flash  /workspace/project  ↑182 ↓446  cache 98%  4% context  tools:c"
+  style 0-78 dim
+  style 81-99 dim
@@ -1,64 +1,64 @@
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-{"type":"assistant/chunk","seq":48,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}
-{"type":"tool/call","seq":51,"time":1783957884719,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
-{"type":"tool/result","seq":52,"time":1783957884719,"data":{"turn":1,"step":5,"callId":"advanced-unmount","content":[{"type":"text","text":"unmounted dyn-1 (plugin \"snapshot-marker\")"}],"isError":false},"sourceEventSeqs":[51],"surfaceOp":"append"}
-{"type":"step/end","seq":53,"time":1783957884719,"data":{"turn":1,"step":5}}
-{"type":"step/start","seq":54,"time":1783957884720,"data":{"turn":1,"step":6}}
-{"type":"assistant/chunk","seq":55,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":56,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"ADVANCED_ACP_OK"}}}
-{"type":"assistant/chunk","seq":57,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_ACP_OK"}}}}
-{"type":"assistant/chunk","seq":58,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}
-{"type":"step/end","seq":61,"time":1783957884721,"data":{"turn":1,"step":6}}
-{"type":"turn/end","seq":62,"time":1783957884721,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type": "assistant/chunk", "seq": 4, "time": 1783950000005, "data": {"turn": 1, "step": 1, "chunk": {"type": "block-start", "index": 0, "blockType": "tool-call"}}}
+{"type": "assistant/chunk", "seq": 5, "time": 1783950000006, "data": {"turn": 1, "step": 1, "chunk": {"type": "tool-call-delta", "index": 0, "id": "advanced-mount", "name": "cordis_mount", "argumentsDelta": "{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
+{"type": "assistant/chunk", "seq": 6, "time": 1783950000007, "data": {"turn": 1, "step": 1, "chunk": {"type": "block-end", "index": 0, "block": {"type": "tool-call", "id": "advanced-mount", "name": "cordis_mount", "arguments": "{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
+{"type": "assistant/chunk", "seq": 7, "time": 1783950000008, "data": {"turn": 1, "step": 1, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 8, "time": 1783950000009, "data": {"turn": 1, "step": 1, "chunk": {"type": "finish", "reason": {"kind": "tool-calls"}}}}
+{"type": "assistant/message", "seq": 9, "time": 1783957884487, "data": {"turn": 1, "step": 1, "content": [{"type": "tool-call", "id": "advanced-mount", "name": "cordis_mount", "arguments": "{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [4, 5, 6, 7, 8], "surfaceOp": "append"}
+{"type": "tool/call", "seq": 10, "time": 1783957884487, "data": {"turn": 1, "step": 1, "callId": "advanced-mount", "name": "cordis_mount", "arguments": "{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
+{"type": "tool/result", "seq": 11, "time": 1783957884488, "data": {"turn": 1, "step": 1, "callId": "advanced-mount", "content": [{"type": "text", "text": "mounted dyn-1 (plugin \"snapshot-marker\", state: active)"}], "isError": false}, "sourceEventSeqs": [10], "surfaceOp": "append"}
+{"type": "step/end", "seq": 12, "time": 1783957884489, "data": {"turn": 1, "step": 1}}
+{"type": "step/start", "seq": 13, "time": 1783957884489, "data": {"turn": 1, "step": 2}}
+{"type": "assistant/chunk", "seq": 14, "time": 1783950000015, "data": {"turn": 1, "step": 2, "chunk": {"type": "block-start", "index": 0, "blockType": "tool-call"}}}
+{"type": "assistant/chunk", "seq": 15, "time": 1783950000016, "data": {"turn": 1, "step": 2, "chunk": {"type": "tool-call-delta", "index": 0, "id": "advanced-code", "name": "run_code", "argumentsDelta": "{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Verify the dynamically mounted marker service\"}"}}}
+{"type": "assistant/chunk", "seq": 16, "time": 1783950000017, "data": {"turn": 1, "step": 2, "chunk": {"type": "block-end", "index": 0, "block": {"type": "tool-call", "id": "advanced-code", "name": "run_code", "arguments": "{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Verify the dynamically mounted marker service\"}"}}}}
+{"type": "assistant/chunk", "seq": 17, "time": 1783950000018, "data": {"turn": 1, "step": 2, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 18, "time": 1783950000019, "data": {"turn": 1, "step": 2, "chunk": {"type": "finish", "reason": {"kind": "tool-calls"}}}}
+{"type": "assistant/message", "seq": 19, "time": 1783957884490, "data": {"turn": 1, "step": 2, "content": [{"type": "tool-call", "id": "advanced-code", "name": "run_code", "arguments": "{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Verify the dynamically mounted marker service\"}"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [14, 15, 16, 17, 18], "surfaceOp": "append"}
+{"type": "tool/call", "seq": 20, "time": 1783957884490, "data": {"turn": 1, "step": 2, "callId": "advanced-code", "name": "run_code", "arguments": "{\"code\": \"return await tools.cordis_inspect({ what: 'dynamic' })\", \"description\": \"Verify the dynamically mounted marker service\"}"}}
+{"type": "tool/code-dispatch", "seq": 21, "time": 1783957884560, "data": {"parentCallId": "advanced-code", "subCallId": "advanced-code:code:1", "name": "cordis_inspect", "arguments": {"what": "dynamic"}, "isError": false, "resultSummary": "## dynamic\n- dyn-1: snapshot-marker [active]"}}
+{"type": "tool/result", "seq": 22, "time": 1783957884561, "data": {"turn": 1, "step": 2, "callId": "advanced-code", "content": [{"type": "text", "text": "## dynamic\n- dyn-1: snapshot-marker [active]"}], "isError": false, "meta": {"logs": []}}, "sourceEventSeqs": [20], "surfaceOp": "append"}
+{"type": "step/end", "seq": 23, "time": 1783957884561, "data": {"turn": 1, "step": 2}}
+{"type": "step/start", "seq": 24, "time": 1783957884562, "data": {"turn": 1, "step": 3}}
+{"type": "assistant/chunk", "seq": 25, "time": 1783950000026, "data": {"turn": 1, "step": 3, "chunk": {"type": "block-start", "index": 0, "blockType": "tool-call"}}}
+{"type": "assistant/chunk", "seq": 26, "time": 1783950000027, "data": {"turn": 1, "step": 3, "chunk": {"type": "tool-call-delta", "index": 0, "id": "advanced-direct-child", "name": "subagent", "argumentsDelta": "{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
+{"type": "assistant/chunk", "seq": 27, "time": 1783950000028, "data": {"turn": 1, "step": 3, "chunk": {"type": "block-end", "index": 0, "block": {"type": "tool-call", "id": "advanced-direct-child", "name": "subagent", "arguments": "{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
+{"type": "assistant/chunk", "seq": 28, "time": 1783950000029, "data": {"turn": 1, "step": 3, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 29, "time": 1783950000030, "data": {"turn": 1, "step": 3, "chunk": {"type": "finish", "reason": {"kind": "tool-calls"}}}}
+{"type": "assistant/message", "seq": 30, "time": 1783957884562, "data": {"turn": 1, "step": 3, "content": [{"type": "tool-call", "id": "advanced-direct-child", "name": "subagent", "arguments": "{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [25, 26, 27, 28, 29], "surfaceOp": "append"}
+{"type": "tool/call", "seq": 31, "time": 1783957884562, "data": {"turn": 1, "step": 3, "callId": "advanced-direct-child", "name": "subagent", "arguments": "{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
+{"type": "tool/result", "seq": 32, "time": 1783957884593, "data": {"turn": 1, "step": 3, "callId": "advanced-direct-child", "content": [{"type": "text", "text": "DIRECT_CHILD_OK"}], "isError": false}, "sourceEventSeqs": [31], "surfaceOp": "append"}
+{"type": "step/end", "seq": 33, "time": 1783957884593, "data": {"turn": 1, "step": 3}}
+{"type": "step/start", "seq": 34, "time": 1783957884594, "data": {"turn": 1, "step": 4}}
+{"type": "assistant/chunk", "seq": 35, "time": 1783957884594, "data": {"turn": 1, "step": 4, "chunk": {"type": "block-start", "index": 0, "blockType": "tool-call"}}}
+{"type": "assistant/chunk", "seq": 36, "time": 1783957884594, "data": {"turn": 1, "step": 4, "chunk": {"type": "tool-call-delta", "index": 0, "id": "advanced-workflow", "name": "workflow", "argumentsDelta": "{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}
+{"type": "assistant/chunk", "seq": 37, "time": 1783957884594, "data": {"turn": 1, "step": 4, "chunk": {"type": "block-end", "index": 0, "block": {"type": "tool-call", "id": "advanced-workflow", "name": "workflow", "arguments": "{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}}
+{"type": "assistant/chunk", "seq": 38, "time": 1783957884594, "data": {"turn": 1, "step": 4, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 39, "time": 1783957884594, "data": {"turn": 1, "step": 4, "chunk": {"type": "finish", "reason": {"kind": "tool-calls"}}}}
+{"type": "assistant/message", "seq": 40, "time": 1783957884594, "data": {"turn": 1, "step": 4, "content": [{"type": "tool-call", "id": "advanced-workflow", "name": "workflow", "arguments": "{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [35, 36, 37, 38, 39], "surfaceOp": "append"}
+{"type": "tool/call", "seq": 41, "time": 1783957884594, "data": {"turn": 1, "step": 4, "callId": "advanced-workflow", "name": "workflow", "arguments": "{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}
+{"type": "tool/result", "seq": 42, "time": 1783957884717, "data": {"turn": 1, "step": 4, "callId": "advanced-workflow", "content": [{"type": "text", "text": "workflow \"advanced-acp-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}], "isError": false}, "sourceEventSeqs": [41], "surfaceOp": "append"}
+{"type": "step/end", "seq": 43, "time": 1783957884718, "data": {"turn": 1, "step": 4}}
+{"type": "step/start", "seq": 44, "time": 1783957884718, "data": {"turn": 1, "step": 5}}
+{"type": "assistant/chunk", "seq": 45, "time": 1783957884719, "data": {"turn": 1, "step": 5, "chunk": {"type": "block-start", "index": 0, "blockType": "tool-call"}}}
+{"type": "assistant/chunk", "seq": 46, "time": 1783957884719, "data": {"turn": 1, "step": 5, "chunk": {"type": "tool-call-delta", "index": 0, "id": "advanced-unmount", "name": "cordis_unmount", "argumentsDelta": "{\"id\":\"dyn-1\"}"}}}
+{"type": "assistant/chunk", "seq": 47, "time": 1783957884719, "data": {"turn": 1, "step": 5, "chunk": {"type": "block-end", "index": 0, "block": {"type": "tool-call", "id": "advanced-unmount", "name": "cordis_unmount", "arguments": "{\"id\":\"dyn-1\"}"}}}}
+{"type": "assistant/chunk", "seq": 48, "time": 1783957884719, "data": {"turn": 1, "step": 5, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 49, "time": 1783957884719, "data": {"turn": 1, "step": 5, "chunk": {"type": "finish", "reason": {"kind": "tool-calls"}}}}
+{"type": "assistant/message", "seq": 50, "time": 1783957884719, "data": {"turn": 1, "step": 5, "content": [{"type": "tool-call", "id": "advanced-unmount", "name": "cordis_unmount", "arguments": "{\"id\":\"dyn-1\"}"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [45, 46, 47, 48, 49], "surfaceOp": "append"}
+{"type": "tool/call", "seq": 51, "time": 1783957884719, "data": {"turn": 1, "step": 5, "callId": "advanced-unmount", "name": "cordis_unmount", "arguments": "{\"id\":\"dyn-1\"}"}}
+{"type": "tool/result", "seq": 52, "time": 1783957884719, "data": {"turn": 1, "step": 5, "callId": "advanced-unmount", "content": [{"type": "text", "text": "unmounted dyn-1 (plugin \"snapshot-marker\")"}], "isError": false}, "sourceEventSeqs": [51], "surfaceOp": "append"}
+{"type": "step/end", "seq": 53, "time": 1783957884719, "data": {"turn": 1, "step": 5}}
+{"type": "step/start", "seq": 54, "time": 1783957884720, "data": {"turn": 1, "step": 6}}
+{"type": "assistant/chunk", "seq": 55, "time": 1783957884720, "data": {"turn": 1, "step": 6, "chunk": {"type": "block-start", "index": 0, "blockType": "text"}}}
+{"type": "assistant/chunk", "seq": 56, "time": 1783957884720, "data": {"turn": 1, "step": 6, "chunk": {"type": "text-delta", "index": 0, "text": "ADVANCED_ACP_OK"}}}
+{"type": "assistant/chunk", "seq": 57, "time": 1783957884720, "data": {"turn": 1, "step": 6, "chunk": {"type": "block-end", "index": 0, "block": {"type": "text", "text": "ADVANCED_ACP_OK"}}}}
+{"type": "assistant/chunk", "seq": 58, "time": 1783957884720, "data": {"turn": 1, "step": 6, "chunk": {"type": "usage", "usage": {"inputTokens": 3, "outputTokens": 3}}}}
+{"type": "assistant/chunk", "seq": 59, "time": 1783957884720, "data": {"turn": 1, "step": 6, "chunk": {"type": "finish", "reason": {"kind": "stop"}}}}
+{"type": "assistant/message", "seq": 60, "time": 1783957884720, "data": {"turn": 1, "step": 6, "content": [{"type": "text", "text": "ADVANCED_ACP_OK"}], "provenance": {"provider": "deepseek", "model": "deepseek-v4-flash"}, "usage": {"inputTokens": 3, "outputTokens": 3}}, "sourceEventSeqs": [55, 56, 57, 58, 59], "surfaceOp": "append"}
+{"type": "step/end", "seq": 61, "time": 1783957884721, "data": {"turn": 1, "step": 6}}
+{"type": "turn/end", "seq": 62, "time": 1783957884721, "data": {"turn": 1, "reason": {"kind": "completed"}}}
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				- text: "Turn 1 Message {{duration}} #1 User NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop. +{{duration}} Step 1 {{duration}} bash read×2 #2 Tool bash · {\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"} +{{duration}} #3 Tool read · {\"file_path\": \"nav-a.md\"} +{{duration}} #4 Tool read · {\"file_path\": \"nav-b.md\"} +{{duration}} Step 2 {{duration}} #5 Message FIRST_DONE 349 56 51 +{{duration}} Turn 2 Message {{duration}} #6 User Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop. +{{duration}} Step 1 {{duration}} #7 Message ## Navigation Summary - alpha nav - beta nav ``` echo WATERFALL ``` 141 36 16 +{{duration}}"
				`@@ -0,0 +1 @@`
				`- text: 3 turns · 3 steps · 3 tool calls turn 0 turn 1 turn 2`