Merge branch 'stack/agent-profiles-1-seam' into stack/agent-profiles-2-configs

2026-08-07 13:34:19 +08:00
parent 380eaec39b a7be2ecb0f
commit 2e15fc0bfe
259 changed files with 8057 additions and 1526 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 .agents/notes/implemented/architecture/2026-07-19-package-invariant-runtime-contracts.md
-2026-07-19-package-invariant-runtime-contracts.md: 40d152b2320ac65f9ea7d8732b1a667236d2780a
-2026-07-19-package-invariant-runtime-contracts.zh.md: a734b1a3deb739c214d1c4c2565fc697b5e4b89b
+2026-07-19-package-invariant-runtime-contracts.md: 86d86f69b606c348e85d1ae654b6b35c4326985a
+2026-07-19-package-invariant-runtime-contracts.zh.md: 386a294b577561d08493a3b2925910ee5ba971b4
@@ -50,7 +50,7 @@ The current 103-package workspace has 21 executable companions and 82 justified
 | `dsh-user-approval` | Approval asked/decided records pair by call and use valid outcomes and policies. |
 | `dsh-workflow` | Workflow and child-agent start/end events preserve run metadata, identity, outcome, count, and error relations. |
 | `dsh-tasks` | Current and terminal task snapshots preserve id/kind, owner, status, and timestamp relationships. |
-| `dsh-tool-todo` | Durable whole-list snapshots use unique trimmed items, closed statuses, and at most one active item. |
+| `dsh-tool-todo` | Durable whole-list snapshots use unique trimmed items and closed statuses. |
 | `dsh-time-context` | Plugin-attributed clock readings agree with the session's open turn, next pre-step position, and elapsed baseline; rendered time parses and does not postdate its event. |

 Session-backed companions validate existing durable events when they load, using the prefix preceding each candidate where the relationship depends on event order. Other checks observe the authoritative live event boundary or mutable service result. Validation runs before publication where accepting an invalid event would otherwise commit bad state.
@@ -50,7 +50,7 @@ Status: implemented
 | `dsh-user-approval` | approval asked/decided 记录按 call 配对，并使用有效 outcome 和 policy。 |
 | `dsh-workflow` | 工作流和 child-agent start/end 事件保持 run metadata、身份、outcome、数量和 error 关系。 |
 | `dsh-tasks` | 当前与终态 task 快照保持 id/kind、owner、status 和 timestamp 关系。 |
-| `dsh-tool-todo` | 持久化全量快照使用唯一且已 trim 的条目、封闭 status，并且最多有一个活动条目。 |
+| `dsh-tool-todo` | 持久化全量快照使用唯一且已 trim 的条目和封闭 status。 |
 | `dsh-time-context` | 标注插件来源的时钟 reading 必须匹配会话当前打开的轮次、下一个步骤开始前的位置和 elapsed baseline；渲染时间必须可解析，且不得晚于对应事件。 |

 基于会话的 companion 在加载时验证已有持久化事件；关系依赖事件顺序时，会使用每个候选事件之前的事件前缀。其他检查观测权威实时事件边界或可变服务结果。如果接受无效事件会提交错误状态，验证就在发布前执行。
@@ -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 .agents/notes/implemented/architecture/2026-07-30-web-config-plane.md
-2026-07-30-web-config-plane.md: 5225460be1d66b85a05ff2fd5ae2826b0e6c41d7
-2026-07-30-web-config-plane.zh.md: 53a21ddf31640d963c413e1793276de694547311
+2026-07-30-web-config-plane.md: 11554077d1848dcdf59b896dd9c29a39fd2f55d4
+2026-07-30-web-config-plane.zh.md: 527c2de8155a56789358b801f9c374e16c81931b
@@ -22,7 +22,7 @@ PR1 made LLM adapter configuration restart-free at the seam, but the only writer

 **A hand-written editor over a schema model layer.** `dsh-client-schema-form` rehydrates the wire's `toJSON()` envelope into live schemastery nodes for validation, path resolution, and immutable draft editing — but no generic rendering: the first cut shipped a full schema-driven form renderer, and the resulting page was an unstyled schema dump (every advanced field flattened onto the card, raw field names as labels, the `retryPolicy` unsupported-fallback in the main flow). The user chose the hand-written direction over adding a hint/grouping system, and a second round removed the reference input entirely: the card's primary field is one **API key** input, a whole-section provider without a configured key opens as its setup card, and the collapsed 自定义设置 fold carries the curated per-family extras (`baseURL` for both families, `reasoningEffort` for deepseek / `reasoning` for pi-ai, plus direct DeepSeek model rows with `id`, `name`, and `contextWindow`). Existing model fields outside that visible set survive array edits; retry policy, timeouts, and other fields remain owned by `settings.yaml`. Validation still runs the rehydrated schema before writing, while adapter-specific checks reject catalog invariants that the serialized schema cannot express. The card's colors resolve through the `--dsw-alias-*` design tokens; it had named `--border`/`--surface`/`--text-*`, which nothing in this app defines, so it rendered their light-mode fallbacks and stayed light under the dark theme. The model catalog takes the row shape the pi-ai provider form introduces: one bordered entry per model, id and display name on the row, and the capacities behind the row's own disclosure, so the two editors read as one design rather than diverging once both land. Every field keeps the indexed `aria-label` that names it. Both capacities are text fields reading a decimal `K`/`M` suffix (`1M` is 1000K, matching how capacities are quoted) and storing the plain count: a field holds the typed text while it has focus, because re-deriving it from the parsed count on every keystroke would rewrite `1000` to `1K` mid-word, and text that does not parse stays on screen so the save-time rejection names a row the user can still see. The shared class names carry this file's token spellings, not that branch's: `--dsw-alias-border-subtle`, `--dsw-alias-text-tertiary`, and `--dsw-alias-text-primary` are undeclared, so they resolve to the light-mode literals in their fallback slots — the defect this section was moved off. A styles test now rejects any `--dsw-*` name the token sheet does not declare, so the next editor to name one fails rather than shipping a light-only surface.

-**The Models page is a three-domain join with seam-shaped apply semantics.** Rows are configured providers; the add card's select is the dormant directory remainder. Route liveness still gates readiness and invalidates the join, but the page does not render it as provider status because configuration presence and runtime availability are distinct. The key path stays reference-shaped without ever showing a reference: a typed key stores **write-only** through `credentials.set` under the profile's `apiKeyEnv`, deriving `<ROUTE>_API_KEY` when none exists (the pi-ai profile records the derivation), so `settings.yaml` never carries a key value. Profile edits and removals land as minimal path-addressed `settings.mutate` operations against the redacted user section, which never names a secret the page did not receive. Removing a user-layer provider first opens a localized model-provider confirmation dialog; cancellation, its close button, and its mask leave the profile untouched, while the destructive confirmation submits the single unset and blocks duplicate submission until it settles. DeepSeek's model list is array-replace configuration: inherited effective rows remain visible until the first edit materializes the complete list in the user layer, and reset unsets the list override.
+**The Models page is a three-domain join with seam-shaped apply semantics.** Rows are configured providers; the add card's select is the dormant directory remainder. Route liveness still gates readiness and invalidates the join, but the page does not render it as provider status because configuration presence and runtime availability are distinct. The key path stays reference-shaped without ever showing a reference: a typed key stores **write-only** through `credentials.set` under the profile's `apiKeyEnv`, deriving `<ROUTE>_API_KEY` when none exists (the pi-ai profile records the derivation only when a key is entered), so `settings.yaml` never carries a key value; a blank pi-ai key materializes a reference-free profile and preserves provider-native authentication. Profile edits and removals land as minimal path-addressed `settings.mutate` operations against the redacted user section, which never names a secret the page did not receive. Removing a user-layer provider first opens a localized confirmation dialog whose row actions, title, description, and final action identify the same provider; confirmation removes an exact configured+writable derived credential before the profile, while custom, environment, and unidentified targets remain untouched. Both stages are idempotent and a partial failure stays in the dialog for retry. DeepSeek's model list is array-replace configuration: inherited effective rows remain visible until the first edit materializes the complete list in the user layer, and reset unsets the list override. The partial-commit and credential-ownership rationale lives in the [provider credential lifecycle note](../bug-fix/2026-08-06-provider-credential-lifecycle.md).

 ## Alternatives considered

@@ -36,4 +36,4 @@ PR1 made LLM adapter configuration restart-free at the seam, but the only writer

 ## Consequences

-The whole loop is pinned keyless in the browser lane (`apps/web/tests/models-settings.e2e.ts`): the add card offers the dormant pi-ai catalog, adding `minimax-cn` with a typed key writes the reference-only profile into `settings.yaml`, stores the value into the harness home's `.env` under the derived `MINIMAX_CN_API_KEY`, registers the route live on the topology frame, and the customized fold merges `reasoning` beside the reference — zero model calls, ARIA goldens for the add-card, configured, and delete-confirmation states, plus a scaffold `harnessHome` so tests never touch a real `~/.dsh` (the provider under test is one whose derived reference cannot collide with a developer's exported keys). The settings-shell scenario intercepts the pathless native intent; seam, provider, wire, React, and native-opener tests separately pin provider absence, custom-path resolution, absent-file materialization, owner-only permissions, hidden remote/unavailable states, duplicate-click collapse, localized failure, macOS text-editor dispatch, and Linux/Windows desktop dispatch. The removal scenario proves cancellation leaves the profile intact, confirmation removes it, and the intentionally retained credential survives. The DeepSeek onboarding fixture edits the default catalog into a user-owned list, persists an arbitrary model id/name/context window, removes the active row, and observes the model selector's empty-selection fallback. The rename touched 239 files (fixtures, goldens, docs, python) in one commit with no compatibility alias. The renderer replacement cost one commit and no wire change: apply semantics, redaction, and the directory join were renderer-agnostic all along. Deferred: a per-row models preview (the picker already lists models), a page address for live routes that never declared configurability, and explicit removal of a provider's retained credential.
+The whole loop is pinned keyless in the browser lane (`apps/web/tests/models-settings.e2e.ts`): the add card offers the dormant pi-ai catalog, adding `minimax-cn` with a typed key writes the reference-only profile into `settings.yaml`, stores the value into the harness home's `.env` under the derived `MINIMAX_CN_API_KEY`, registers the route live on the topology frame, and the customized fold merges `reasoning` beside the reference — zero model calls, ARIA goldens for the add-card, configured, and identified delete-confirmation states, plus a scaffold `harnessHome` so tests never touch a real `~/.dsh` (the provider under test is one whose derived reference cannot collide with a developer's exported keys). The settings-shell scenario intercepts the pathless native intent; seam, provider, wire, React, and native-opener tests separately pin provider absence, custom-path resolution, absent-file materialization, owner-only permissions, hidden remote/unavailable states, duplicate-click collapse, localized failure, macOS text-editor dispatch, and Linux/Windows desktop dispatch. The removal scenario proves cancellation leaves both profile and key intact, then confirmation removes both the profile and its identified managed credential. The DeepSeek onboarding fixture edits the default catalog into a user-owned list, persists an arbitrary model id/name/context window, removes the active row, and observes the model selector's empty-selection fallback. The rename touched 239 files (fixtures, goldens, docs, python) in one commit with no compatibility alias. The renderer replacement cost one commit and no wire change: apply semantics, redaction, and the directory join were renderer-agnostic all along. Deferred: a per-row models preview (the picker already lists models) and a page address for live routes that never declared configurability.
@@ -22,7 +22,7 @@ PR1 让 LLM（大语言模型）适配器配置在 seam 层面免重启，但唯

 **架在 schema 模型层之上的手写编辑器。**`dsh-client-schema-form` 把 wire 的 `toJSON()` 信封还原（rehydrate）为活的 schemastery 节点，用于校验、路径解析与不可变草稿编辑——但不做通用渲染：第一版交付了完整的 schema 驱动表单渲染器，得到的却是一个未加样式、把 schema 原样倾倒出来的页面（每个进阶字段都平铺到卡片上、原始字段名直接充当标签、`retryPolicy` 的「不支持」回退落在主流程里）。用户没有再加一套提示／分组系统，而是选择了手写方向，第二轮又把引用输入框整个移除：卡片的主字段是一个 **API 密钥**输入框，未配置密钥的整分节提供方会以其设置卡片的形式打开，收起的「自定义设置」折叠区承载按家族精选的额外字段（两个家族都有 `baseURL`，deepseek 有 `reasoningEffort`／pi-ai 有 `reasoning`，另有直接 DeepSeek 模型行的 `id`、`name` 和 `contextWindow`）。现有模型字段中不在可见集合内的部分会在数组编辑后保留；重试策略、超时及其他字段仍归 `settings.yaml` 所有。校验仍会在写入前运行还原出的 schema，适配器特有的检查则会拒绝序列化 schema 无法表达的目录不变量。卡片的颜色经 `--dsw-alias-*` 设计 token 解析；它此前引用的 `--border`／`--surface`／`--text-*` 在本应用中无人定义，于是渲染出的是它们的亮色模式回退值，在暗色主题下依旧保持亮色。模型目录采用 pi-ai 提供方表单引入的行形态：每个模型一个带边框的条目，ID 与显示名称落在行上，容量则收在该行自己的折叠区里，使两个编辑器呈现为同一套设计，而不是在双方都落地后各自分岔。每个字段都保留那个为其命名的带序号 `aria-label`。两项容量都是文本输入框，读取十进制的 `K`／`M` 后缀（`1M` 即 1000K，与容量的通行标注方式一致）并存储纯数值：字段持有焦点期间保留键入的文本，因为若每次按键都从解析出的数值重新推导该文本，`1000` 会在尚未输完时就被改写成 `1K`；无法解析的文本也会留在屏幕上，因此保存时的拒绝点名的是用户仍能看见的那一行。共用的类名承载的是本文件的 token 写法，而非那个分支的：`--dsw-alias-border-subtle`、`--dsw-alias-text-tertiary` 和 `--dsw-alias-text-primary` 均未声明，于是它们解析为各自回退槽位中的亮色模式字面值——正是本节此前迁离的那个缺陷。现在有一个样式测试会拒绝 token 表未声明的任何 `--dsw-*` 名称，因此下一个写出这类名称的编辑者会当场失败，而不是交付一个只有亮色的界面。

-**Models 页是一次三领域联接，应用语义与 seam 同形。**每一行是一个已配置的提供方；「新增」卡片的选择框是可配置提供方目录中剩余的休眠条目。路由存活状态仍用于就绪判定，并会使该联接失效，但页面不将其渲染为提供方状态，因为配置存在与运行时可用性是两个不同概念。密钥通道保持引用形态，却从不展示任何引用：键入的密钥经 `credentials.set` **只写**存入 profile 的 `apiKeyEnv` 之下，引用不存在时便派生 `<ROUTE>_API_KEY`（pi-ai profile 会记录该派生），因此 `settings.yaml` 从不携带密钥值。profile 的编辑和删除会针对脱敏后的用户分节，以按路径寻址的最小 `settings.mutate` 操作落地，绝不会点名页面未收到的机密。删除用户层提供方时，会先打开本地化的模型提供方确认对话框；取消操作、关闭按钮和遮罩均不会改动 profile，而破坏性确认会提交唯一一条 unset，并在其完成前阻止重复提交。DeepSeek 的模型列表是数组替换配置：继承而来的生效模型行会一直显示，直到第一次编辑将完整列表具化到用户层；重置则会取消设置该列表覆盖。
+**Models 页是一次三领域联接，应用语义与 seam 同形。**每一行是一个已配置的提供方；「新增」卡片的选择框是可配置提供方目录中剩余的休眠条目。路由存活状态仍用于就绪判定，并会使该联接失效，但页面不将其渲染为提供方状态，因为配置存在与运行时可用性是两个不同概念。密钥通道保持引用形态，却从不展示任何引用：键入的密钥经 `credentials.set` **只写**存入 profile 的 `apiKeyEnv` 之下，引用不存在时便派生 `<ROUTE>_API_KEY`（仅在输入密钥时，pi-ai profile 才会记录该派生），因此 `settings.yaml` 从不携带密钥值；留空 pi-ai 密钥会具化一个不带引用的 profile，并保留提供方原生认证。profile 的编辑和删除会针对脱敏后的用户分节，以按路径寻址的最小 `settings.mutate` 操作落地，绝不会点名页面未收到的机密。删除用户层提供方时，会先打开本地化确认对话框，其行操作、标题、说明和最终操作都会点名同一个提供方；确认后会先清除与派生目标精确匹配且已配置、可写的凭据，再删除 profile，自定义目标、环境目标和无法识别的目标则保持不变。两个阶段都具备幂等性，部分失败会留在对话框中供重试。DeepSeek 的模型列表是数组替换配置：继承而来的生效模型行会一直显示，直到第一次编辑将完整列表具化到用户层；重置则会取消设置该列表覆盖。部分提交与凭据所有权的理由记录在[提供方凭据生命周期 note](../bug-fix/2026-08-06-provider-credential-lifecycle.md)中。

 ## 曾考虑的替代方案

@@ -36,4 +36,4 @@ PR1 让 LLM（大语言模型）适配器配置在 seam 层面免重启，但唯

 ## 后果

-整条闭环以无密钥方式固定在浏览器测试通道（`apps/web/tests/models-settings.e2e.ts`）：「新增」卡片提供休眠的 pi-ai catalog，携键入的密钥添加 `minimax-cn` 会把只含引用的 profile 写入 `settings.yaml`、把密钥值存入 harness 家目录 `.env` 中派生的 `MINIMAX_CN_API_KEY` 之下、路由随拓扑帧注册为存活，「自定义设置」折叠区则把 `reasoning` 合并到引用旁边——全程零模型调用，「新增」卡片态、已配置态与删除确认态各有 ARIA golden，另有脚手架式的 `harnessHome`，测试绝不触碰真实的 `~/.dsh`（受测提供方是派生引用不可能与开发者已导出密钥相撞的那一个）。设置外壳场景会截获无路径参数的原生意图；seam、提供方、wire、React 与原生打开器测试分别固定了提供方缺失、自定义路径解析、缺失文件创建、仅属主权限、远程／不可用时隐藏、重复点击合并、本地化失败、macOS 文本编辑器分发，以及 Linux/Windows 桌面分发。删除场景证明：取消后 profile 保持原样，确认后会将其删除，而刻意保留的凭据依然存在。DeepSeek 首次使用 fixture 会把默认目录编辑为用户自有列表、持久化任意模型的 ID／名称／上下文窗口、移除活动模型行，并观察模型选择器的空选择回退。这次重命名在一次提交中触及 239 个文件（fixture（测试前置数据）、golden、文档、python），未保留兼容别名。替换渲染器只花了一次提交，且没有任何 wire 变更：应用语义、脱敏与目录联接从一开始就与渲染器无关。延后事项：每行的模型预览（选择器已能列出模型）、为从未声明可配置性的存活路由提供页面地址，以及显式删除提供方所保留的凭据。
+整条闭环以无密钥方式固定在浏览器测试通道（`apps/web/tests/models-settings.e2e.ts`）：「新增」卡片提供休眠的 pi-ai catalog，携键入的密钥添加 `minimax-cn` 会把只含引用的 profile 写入 `settings.yaml`、把密钥值存入 harness 家目录 `.env` 中派生的 `MINIMAX_CN_API_KEY` 之下、路由随拓扑帧注册为存活，「自定义设置」折叠区则把 `reasoning` 合并到引用旁边——全程零模型调用，「新增」卡片态、已配置态与已点名目标的删除确认态各有 ARIA golden，另有脚手架式的 `harnessHome`，测试绝不触碰真实的 `~/.dsh`（受测提供方是派生引用不可能与开发者已导出密钥相撞的那一个）。设置外壳场景会截获无路径参数的原生意图；seam、提供方、wire、React 与原生打开器测试分别固定了提供方缺失、自定义路径解析、缺失文件创建、仅属主权限、远程／不可用时隐藏、重复点击合并、本地化失败、macOS 文本编辑器分发，以及 Linux/Windows 桌面分发。删除场景证明，取消会保留 profile 和密钥，随后的确认会同时删除 profile 及其已识别的受管凭据。DeepSeek 首次使用 fixture 会把默认目录编辑为用户自有列表、持久化任意模型的 ID／名称／上下文窗口、移除活动模型行，并观察模型选择器的空选择回退。这次重命名在一次提交中触及 239 个文件（fixture（测试前置数据）、golden、文档、python），未保留兼容别名。替换渲染器只花了一次提交，且没有任何 wire 变更：应用语义、脱敏与目录联接从一开始就与渲染器无关。延后事项：每行的模型预览（选择器已能列出模型）和为从未声明可配置性的存活路由提供页面地址。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-31-code-runtime-portable-identifier-seam.md
+2026-07-31-code-runtime-portable-identifier-seam.md: 9e9df50235b3505458e3645e2c6ff6e9bd439183
+2026-07-31-code-runtime-portable-identifier-seam.zh.md: 31d2410ee4809d0693f2e7897e61c50163bb0758
@@ -0,0 +1,44 @@
+# Agent Note: the code-runtime seam owns portable-identifier exclusions
+
+Status: implemented
+
+English | [中文](2026-07-31-code-runtime-portable-identifier-seam.zh.md)
+
+## Problem
+
+The code-runtime seam promises that a binding-namespace list valid on one backend is valid on every backend, so a Code Mode consumer can hand the same bindings to any registered runtime without knowing its language. The first backend, `dsh-code-runtime-worker`, privately owned the identifier rules that enforce part of that promise: an `IDENTIFIER` regex that allowed the JS-only `$`, a `RESERVED_WORDS` set holding only ECMAScript keywords, and a `RESERVED_ERROR_PROPERTIES` set of three JS `Error` slots. Those rules described the worker's own language, not the seam's portability contract.
+
+A second backend written against a different language (CPython, arriving in a later PR of this stack) would either re-declare its own rules — letting `lambda` pass the worker and fail Python, or `$tools` pass the worker and fail every non-JS backend — or import the worker's, inverting the dependency so the seam's implementation reached into a sibling implementation. Neither keeps the portability promise real: it would hold only for the backend a caller happened to test against.
+
+## Decision
+
+The seam package (`@deepseek-ai/dsh-code-runtime`) exports the portable-identifier exclusion contract as four named constants, and every backend imports them rather than re-declaring:
+
+- `PORTABLE_RESERVED_WORDS` — the union of ECMAScript and Python reserved words. A namespace global or error-class name matching any is refused on all backends, so `lambda` is refused even though it is a legal JS parameter name. Adding a language widens this union, which is a deliberate breaking review of existing binding names.
+- `RESERVED_BINDING_GLOBALS` — globals some backend owns in the program's namespace: `console` (the worker's log capture), `__dsh_main__`/`__builtins__`/`__name__` (the Python bootstrap's wrapper and seeded module globals), and `__debug__` (not a seeded slot but a CPython compile-time constant that rejects assignment, so an injected global under that name is unreachable — the same portability split by a different mechanism). Refused everywhere so a namespace list cannot pick a name that works on one backend and collides on another.
+- `RESERVED_ERROR_MEMBERS` — error-member names every backend refuses: the JS `Error` slots (`name`, `message`, `stack`) and Python's exception-protocol members (`args`, `with_traceback`, `add_note`).
+- `DUNDER_MEMBER` — the dunder-form regex (`__x__`, non-empty middle), refused as an error member wholesale because several are constrained CPython descriptors whose exact set is an interpreter-version detail.
+
+The seam also narrows the portable identifier subset to `[A-Za-z_][A-Za-z0-9_]*` (documented on `CodeBindingNamespace.global` and `CodeBindingErrorClass`), dropping the JS-only `$`. The worker consumes the shared constants directly by their seam names — `PORTABLE_RESERVED_WORDS` for both binding-global and error-class names, `RESERVED_BINDING_GLOBALS` for backend-owned slots, `RESERVED_ERROR_MEMBERS` plus `DUNDER_MEMBER` for error members — with no local re-alias; its `IDENTIFIER` regex loses `$`.
+
+The constants live at the seam even though only one backend ships in this PR: the whole point is that the contract is language-agnostic and owned above any single language. A backend that violated it would be the bug, and the shared set is where a reviewer looks to see what "portable" means.
+
+## Scope
+
+This PR delivers only the seam extension and the worker's adoption of it. No Python backend, `py-types` renderer, or Code Mode language dispatch ships here — they are later PRs in the stack that depend on these exports. The seam README's worker-only wording is left unchanged for the same reason: linking to a `dsh-code-runtime-python` README that does not yet exist would break the dead-link gate.
+
+`RESERVED_BINDING_GLOBALS` currently encodes the not-yet-merged Python bootstrap's concrete design: it seeds exactly `__builtins__`/`__name__` and wraps the program under `__dsh_main__`. The Python-backend PR that seeds any additional module global (`__doc__`, `__loader__`, `__spec__`, `__file__`, `__package__`, …) MUST widen this set in the same change, exactly as adding a language widens `PORTABLE_RESERVED_WORDS` — a name the bootstrap seeds but the set omits is the portability split this contract exists to prevent.
+
+## Alternatives considered
+
+**Each backend declares its own exclusions.** Rejected: it makes the portability promise per-backend. A binding list the caller tested on the worker could be refused by Python, which is exactly the split the seam exists to prevent.
+
+**The Python backend imports the worker's constants.** Rejected: it inverts the dependency — the seam's implementations would reach into a sibling implementation for a contract neither owns. The contract belongs above both, at the seam.
+
+**Keep `$` in the portable identifier subset.** Rejected: `$` is JS-only spelling. Allowing it would let `$tools` pass the worker and fail every non-JS backend, breaking portability for a purely cosmetic gain.
+
+## Consequences
+
+Bought: one place — the seam package — defines what a portable binding name is, and every backend enforces the same contract by import. A namespace list valid on one backend is valid on all, verifiably, not by coincidence of which backend the caller tested.
+
+Cost: existing worker callers using a `$`-containing global now fail identifier validation. Under the pre-release stance this is a corrected foundation, not a compatibility break to shim. The worker's seam-misuse tests gain cases for `$tools`, Python exception members (`args`), dunders (`__dict__`), and a Python-owned global (`__dsh_main__`), proving the shared set is enforced from the worker side.
@@ -0,0 +1,44 @@
+# Agent Note：code-runtime seam 拥有可移植标识符排除集
+
+Status: implemented
+
+[English](2026-07-31-code-runtime-portable-identifier-seam.md) | 中文
+
+## Problem
+
+code-runtime seam 承诺：在一个后端上有效的绑定命名空间列表，在每个后端上都有效，因此 Code Mode 消费方可以把同一组绑定交给任何已注册的运行时，而不必知道它的语言。首个后端 `dsh-code-runtime-worker` 私自拥有了执行这项承诺一部分的标识符规则：一个允许 JS 专有 `$` 的 `IDENTIFIER` 正则、一个只含 ECMAScript 关键字的 `RESERVED_WORDS` 集合，以及一个含三个 JS `Error` 槽位的 `RESERVED_ERROR_PROPERTIES` 集合。这些规则描述的是 worker 自身的语言，而非 seam 的可移植性契约。
+
+一个针对不同语言（CPython，将在本 stack 后续 PR 中到来）编写的第二后端，要么重新声明自己的规则——让 `lambda` 通过 worker 却在 Python 上失败，或让 `$tools` 通过 worker 却在每个非 JS 后端上失败——要么导入 worker 的规则，从而反转依赖，使 seam 的一个实现伸手进入另一个兄弟实现。二者都无法让可移植承诺成真：它只对调用方恰好测试过的那个后端成立。
+
+## Decision
+
+seam 包（`@deepseek-ai/dsh-code-runtime`）以四个具名常量导出可移植标识符排除契约，每个后端导入它们而非重新声明：
+
+- `PORTABLE_RESERVED_WORDS`——ECMAScript 与 Python 保留字的联集。任何命名空间 global 或 error-class 名称匹配其中之一，都在所有后端上被拒绝，因此 `lambda` 即便是合法的 JS 参数名也被拒绝。新增一门语言即扩宽此联集，这是对现有绑定名称的一次有意的破坏性复审。
+- `RESERVED_BINDING_GLOBALS`——某个后端在程序命名空间中拥有的 global：`console`（worker 的日志捕获）、`__dsh_main__`/`__builtins__`/`__name__`（Python bootstrap 的包装器与预置模块 global），以及 `__debug__`（不是 seed 的槽位，而是 CPython 编译期常量，赋值会被拒，故以该名注入的 global 不可达——同一种可移植性分裂，只是机制不同）。在所有后端上被拒绝，使命名空间列表无法选到一个在某后端能用、在另一后端冲突的名称。
+- `RESERVED_ERROR_MEMBERS`——每个后端都拒绝的 error-member 名称：JS `Error` 槽位（`name`、`message`、`stack`）与 Python 异常协议成员（`args`、`with_traceback`、`add_note`）。
+- `DUNDER_MEMBER`——dunder 形式正则（`__x__`，非空中缀），作为 error member 被整体拒绝，因为其中若干是受约束的 CPython 描述符，其确切集合是解释器版本细节。
+
+seam 同时把可移植标识符子集收窄为 `[A-Za-z_][A-Za-z0-9_]*`（记录在 `CodeBindingNamespace.global` 与 `CodeBindingErrorClass` 上），去掉 JS 专有的 `$`。worker 直接以 seam 名消费这些共享常量——binding-global 与 error-class 名称用 `PORTABLE_RESERVED_WORDS`、后端拥有槽位用 `RESERVED_BINDING_GLOBALS`、error member 用 `RESERVED_ERROR_MEMBERS` 加 `DUNDER_MEMBER`——不再本地起别名；其 `IDENTIFIER` 正则去掉 `$`。
+
+尽管本 PR 只交付一个后端，这些常量仍置于 seam：要点正是该契约与语言无关，且拥有权在任何单一语言之上。违反它的后端才是 bug，而共享集合正是复审者查看"可移植"含义的地方。
+
+## Scope
+
+本 PR 只交付 seam 扩展与 worker 对它的采用。这里不交付任何 Python 后端、`py-types` 渲染器或 Code Mode 的语言分发——它们是本 stack 中依赖这些导出的后续 PR。seam README 中仅描述 worker 的措辞保持不变，理由相同：链接到一个尚不存在的 `dsh-code-runtime-python` README 会破坏死链 gate。
+
+`RESERVED_BINDING_GLOBALS` 当前编码了尚未合并的 Python bootstrap 的具体设计：它恰好 seed `__builtins__`/`__name__`，并把程序包装在 `__dsh_main__` 之下。任何 seed 额外模块 global（`__doc__`、`__loader__`、`__spec__`、`__file__`、`__package__` 等）的 Python 后端 PR 必须在同一改动中扩宽此集合，正如新增一门语言即扩宽 `PORTABLE_RESERVED_WORDS`——bootstrap 会 seed 却不在集合中的名称，正是本契约要防止的可移植性分裂。
+
+## Alternatives considered
+
+**每个后端声明自己的排除集。** 拒绝：这让可移植承诺变成逐后端成立。调用方在 worker 上测过的绑定列表可能被 Python 拒绝，而这正是 seam 存在要防止的分裂。
+
+**Python 后端导入 worker 的常量。** 拒绝：这反转依赖——seam 的实现会为一个二者都不拥有的契约伸手进入兄弟实现。契约属于二者之上，即 seam。
+
+**在可移植标识符子集中保留 `$`。** 拒绝：`$` 是 JS 专有拼写。允许它会让 `$tools` 通过 worker 却在每个非 JS 后端上失败，为纯粹表面的好处破坏可移植性。
+
+## Consequences
+
+获得：一个地方——seam 包——定义什么是可移植绑定名称，每个后端通过导入执行同一契约。在一个后端上有效的命名空间列表在所有后端上都有效，这是可验证的，而非取决于调用方测试了哪个后端的巧合。
+
+代价：现有使用含 `$` global 的 worker 调用方现在会在标识符校验时失败。在预发布立场下这是一次被纠正的地基，而非需要 shim 的兼容性破坏。worker 的 seam-misuse 测试新增了 `$tools`、Python 异常成员（`args`）、dunder（`__dict__`）与一个 Python 拥有的 global（`__dsh_main__`）等用例，从 worker 侧证明共享集合被执行。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-08-06-subagent-list-identity-projection.md
+2026-08-06-subagent-list-identity-projection.md: ba023d04805ff3335c8f243510aa8ddc15fe13d6
+2026-08-06-subagent-list-identity-projection.zh.md: 368a70f5b3e5a27e4e1c648e8819476d40a57709
@@ -0,0 +1,184 @@
+# Agent Note: Subagent list identity via the projection unit
+
+Status: implemented
+
+English | [中文](2026-08-06-subagent-list-identity-projection.zh.md)
+
+## Problem
+
+Before the rewrite, `SubagentService.listChildren` ran two full-log materializations — `listEvents` plus `readEvent` — on every listing for each direct child with `header.origin === 'subagent'`, each materialization accompanied by a full-log structuredClone, all to fold two fields, mode and label, out of the descriptor event. The descriptor's position in the log is not fixed — the fork prefix is arbitrarily long, and zstd-compressed frames carry no seq index — so there is no shortcut to locating it; this path had no cache whatsoever, and its cost amplifies with transcript length × child count × listing frequency. It also dragged session-query in as a hard dependency of listing: in a deployment without a query backend, `list_agents` rejects wholesale with `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE`, even though enumeration needs nothing but header facts.
+
+The same root cause has a second symptom: on every Agent-bound RPC's owner check, the host-side `hasSubagentDescriptor()` scans the target session's own suffix, even though `SessionHeader.origin` already answers the vast majority of the same question.
+
+The root cause is that the [durable-subagent-catalog decision](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md) made the descriptor event (`subagent/descriptor`) the catalog's sole durable authority yet paired descriptor reads with no cache layer, and explicitly accepted the per-child double read as the "no-index correctness baseline". [Web subagent conversations](../feature/2026-07-27-web-subagent-conversations.md) (#1569) already put "is this a subagent" into the header (`SessionHeader.origin`), so identity determination no longer reads the log; mode and label still had to be scanned.
+
+## Decision
+
+mode and label are folded by the new `subagent` projection unit (pure identity, two arms), and the unit is the sole authority over the fold rules; `listChildren` no longer depends on session-query — enumeration is a subagent-owned live-preferred merge, and value retrieval walks a three-rung compute-and-discard ladder: a live child synchronously reads the registry's existing watermark cache (zero log reads); a cold child first asks the optional `sessionProjectionCache` checkpoint, and a served identity that passes the seq gate is final; otherwise it pays one full `persistence.inspect` read plus one `registry.restore` fold. No index, no cache of its own, no write-back.
+
+There are three families of escape from the per-child scan: promote mode/label into the header (the write path pays); build a durable derivation for the projection (a checkpoint ladder, or values landed during query-index rebuild with read-side reconciliation); or compute at read time (live from the watermark cache, cold from one full read). This note takes the third. "Values landed with the query index" was once this note's settled direction and was under construction for a time, then retired wholesale: query infrastructure was forced to learn domain vocabulary while the sole consumer is satisfied by read-time computation — the live child's zero reads come for free from session-projection's existing watermark cache, and the cold child's single full read is explicitly accepted as compute-and-discard. The first two routes and the retirement rationale are detailed under Alternatives considered.
+
+Key points:
+
+- **The subagent list does not depend on session-query**: enumeration is completed by a subagent-owned live-preferred merge, and mode/label is retrieved through `ctx.sessionProjections`; deployments without a query backend list as usual.
+- **Value retrieval is a three-rung compute-and-discard ladder**: a live child reads `sessionProjections.snapshot()` (the registry's existing watermark cache, zero log reads); a cold child first reads the optional `sessionProjectionCache.cachedSnapshot(header)`, using the value directly when a non-null `subagent` identity passing the seq gate (`seq >= seedLength ?? 0`) is among its values; otherwise it pays one full `persistence.inspect` read plus one `registry.restore({}, events, 0)` fold; beyond that, absent is absent — no cache of its own, no write-back, no index.
+- **The `subagent` projection unit is the sole authority over the fold rules**: the live snapshot, the cold restore, and GUI history's detached fold all compute through the registry; no second copy of descriptor-interpretation logic exists.
+- **The header, the descriptor (v2), session-persistence, session-projection(-cache), and session-query(-sqlite) are all untouched**; pre-existing data acquires exact values through one `inspect` computation the first time it is listed — no degraded unknown state, no migration.
+
+Relationship to existing notes:
+
+- This note supersedes two designs on the list read path in [durable-subagent-catalog](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md): enumeration through `sessionQuery.traceSession`, and per-child descriptor-event reads (the `listEvents`-plus-exact-`readEvent` double read with in-place diagnostic classification). The diagnostic row semantics is retained, with classification now derived by the list from projection-value absence and activity; the descriptor event remains the sole durable authority for mode/label and the fold input, and the resume authorization and Activation contracts are untouched. This is partial supersession; the two notes stay cross-linked.
+- The [session-projection RFC](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md)'s registry contract (`ProjectionDefinition`, `snapshot`, `restore`) is untouched; this note only adds one registration to it — the `subagent` identity unit — and becomes another consumer instance of the two existing reads, snapshot (live) and restore (cold) — GUI history's cold read is already the same shape. The fold rules are registered with the registry exactly once; every consuming surface computes through the registry, and no second copy of the fold logic exists.
+
+### `subagent` projection unit
+
+It hangs beside the existing `subagentTiming` ([projection.ts](../../../../packages/subagent/subagent/src/projection.ts), [projection-types.ts](../../../../packages/subagent/subagent/src/projection-types.ts)), under key `subagent`:
+
+```ts ignore-check
+export type SubagentIdentityProjection =
+  | { mode: 'one-shot'; label?: string; seq: number }
+  | { mode: 'continuable'; label: string; seq: number }
+
+declare module '@deepseek-ai/dsh-session-projection/types' {
+  interface SessionProjectionMap {
+    subagent: SubagentIdentityProjection | null
+  }
+}
+```
+
+- The projection is pure identity, and **the projection system has no failure channel**: a unit never throws; a corrupt payload or an unrecognized version folds exactly like a log with no descriptor at all — the result is a **serializable null sentinel**: the map entry is `SubagentIdentityProjection | null`, non-optional, never undefined or an absent key. The reason: the registry's onChanged push goes through JSON serialization, where an undefined field is dropped by stringify, the client's frame validation rejects the frame, and a consumer's stored old identity would never update; null passes frames intact, and consumers replace the old identity with the sentinel. The judging discipline: consuming surfaces treat null and undefined (which only a JSON boundary dropping the key can produce) alike as no value. How "computed to nothing" is presented is the consumer's own business (see the `listChildren` four-state mapping below).
+- Label strength is decided by the descriptor schema: a continuable's label is mandatory at parse, a one-shot's was always optional; the mode/label discriminant matches the child row's strong contract below exactly (the row carries no `seq` — it is the projection's internal own-suffix proof).
+- The identity carries `seq`: the seq of the `subagent/descriptor` event it was folded from, mandatory on both arms and absent on the null sentinel — `seq >= header.seedLength ?? 0` proves the identity was folded from the child's own suffix rather than a fork seed's replayed ancestor descriptor. The state gaining `seq` bumps the unit's `stateVersion` to 2, and existing checkpoint rows are invalidated by version mismatch per the registry contract, falling to the authoritative refold.
+- Fold rule: `subagent/descriptor` is last-wins, under the same descriptor-reset discipline as `subagentTiming` — ancestor descriptors in the fork prefix are overridden by the session's own descriptor. A corrupt or unrecognized-version payload is last-wins all the same: it resets to the null sentinel rather than keeping the prior identity, so a fork of a healthy ancestor does not inherit an identity its own descriptor cannot stand up.
+
+### Enumeration: subagent-owned live-preferred merge
+
+`listChildren`'s ([list-children.ts](../../../../packages/subagent/subagent/src/list-children.ts)) enumeration goes through no query service: the two sources `ctx.sessions.list()` and `ctx.get('sessionPersistence')?.list()` merge by id, with a live record overriding the same-id persisted record wholesale and no header consistency check. Everything enumeration needs is header facts:
+
+- Filtering: `header.origin === 'subagent' && header.parentSession === parentSessionId`.
+- `hasChildren`: the same merged material, looked at one level down — a direct descendant exists with `origin === 'subagent'` whose `parentSession` is that child.
+- `activity`: a live record is `running`; one present only in persistence is `inactive`.
+- Ordering: `createdAt` ascending, then child id ascending (matching the old contract).
+- **Absent persistence degrades to live-only enumeration, not an error**: in a deployment without persistence, a cold child could not be resumed anyway, and listing live children remains meaningful. (Contrast: the old implementation rejected wholesale when sessionQuery was missing.)
+- A persistence listing failure fails the whole enumeration; per-child isolation applies only to the per-child cold reads.
+
+### Value retrieval: the three-rung compute-and-discard ladder
+
+For each enumerated child, mode/label retrieval walks a three-rung ladder — compute-and-discard, no cache of its own, no write-back (the third rung is the same shape as apiproxy `session.history`'s cold read):
+
+| Rung | Read | Cost |
+| --- | --- | --- |
+| 1: live child | `ctx.sessionProjections.snapshot(session).values.subagent` | Zero log reads — the registry's existing watermark cache, synchronous retrieval |
+| 2: cold child, cache hit | The optional `sessionProjectionCache.cachedSnapshot(header)`, used directly only when a non-null `subagent` identity satisfies `identity.seq >= header.seedLength ?? 0` — an own descriptor is immutable once appended, and the seq gate proves the value was folded from the child's own suffix, regardless of the row's watermark | Zero log reads |
+| 3: cold child, fallback | One full `persistence.inspect(id)` read + `registry.restore({}, events, 0).snapshot.values.subagent` | One full read computed per listing |
+
+- Error contract: an unmounted `ctx.sessionProjections` is a configuration error; `listChildren` checks unconditionally before enumerating and fails loudly with `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE` — a deployment with zero children fails just as deterministically, so an empty listing cannot mask the misconfiguration. The session store gets the same posture: an absent `ctx.get('sessions')` (a strict global read, never the caller-scope-bound property proxy) fails with `SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE`. The two codes map differently on the wire: apiproxy gives only `PROJECTIONS_UNAVAILABLE` a dedicated wire face, and `SESSION_STORE_UNAVAILABLE` goes through the generic internal fallback — the apiproxy composition injects `sessions` itself, so that error is unreachable in its deployment, and a dedicated mapping would violate the need principle. `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` is deleted along with the session-query dependency.
+- The cache is a purely optional acceleration layer: an absent service is skipped on a null check — no error code, no part in configuration validation (in contrast to `sessionProjections`' loud contract). Anything the second rung throws (including a poisoned unit row in the cache detonating `viewCheckpoint`) silently falls to the third rung — the cache is derived data, so its faults never produce a `corrupt` verdict; the final judgment belongs to the authoritative refold. A row whose checkpoint cut predates the descriptor naturally lacks the `subagent` key and falls through automatically, with no special-casing; a null sentinel in the row does not count either — it falls to the third rung for the authoritative refold's verdict. A count/interval checkpoint inside the creation window can land a fork seed's replayed ancestor identity in the row — the ancestor's seq falls inside the seed range, the seq gate rejects it, and it likewise falls to the third rung's verdict.
+- Per-child isolation: a single child's failed cold full read only turns that row into an `unavailable` diagnostic, naturally retried on the next listing, without affecting siblings (see the four-state mapping).
+- The cold path's lifecycle witness: preparation's result must still point at the lifecycle that was enumerated — the witness field set is the same seven fields as the old SOURCE_CONFLICT check (version, id, createdAt, cwd, parentSession, seedLength, delegationDepth); a session deleted and republished under the same id degrades to a `corrupt` row in the old parent's catalog, leaking nothing of the new owner's child.
+- Cold-read concurrency is bounded by the constant 4 — it constrains a read-only scan of local media, not deployment behavior; when a networked persistence backend appears, it is promoted to a validated `Config` field.
+- The cold-read cost, recorded honestly: only with the cache unmounted or missed does a cold child pay one full read per listing, at a cost proportional to its transcript size; the settled stance is compute-and-discard, and no cache of its own is built. The full read goes through `inspect()` into the [Session preparation](2026-08-05-session-preparation.md) cold read, so short-term repeated reads of the same id can hit its LRU for reuse, but listing does not depend on this. A live child reads zero log throughout.
+- Cancellation: the caller's signal is checked before and after each persistence read, and a read that settles only after abort is rejected, normalized to the stable error code `CANCELLED`.
+
+### Authority model
+
+- The session log is the sole authority; this design adds no derived persistence of any kind — no index values, no checkpoints of its own, no in-process memo; the `sessionProjectionCache` checkpoint the second rung reads is an existing composition item's derived data, which this design only reads and never writes. Values are computed on read and discarded, and a value's freshness is exactly the live state or persisted revision at the moment of the read (an own descriptor is immutable once appended — a cached identity past the seq gate has no staleness problem; the gate guards against seed-replayed ancestor identities).
+- The Session and persistence write paths are entirely unaware of listing and projection consumption: no event-listener write-back, no fold-on-write.
+- Enumeration and value retrieval constitute no second authorization source and make no unpublished child visible — the two sources see only published live records and durably written persisted records, consistent with the rule the durable-subagent-catalog note laid down for derived read surfaces.
+
+### `listChildren` row shape and consuming surfaces
+
+The `SubagentListEntry` **data structure is identical to before the rewrite** — the child and diagnostic arms, the `kind` discriminant, the three-valued `reason`, and the child arm's strong mode/label contract are all retained; the only change is the diagnostics' information source: the projection system has no failure channel, so diagnostics are derived by the list from projection-value absence and activity, and the list itself parses zero events. The "no value means await the hard read" rule guarantees the ladder always computes mode/label for healthy data.
+
+```ts ignore-check
+export type SubagentListEntry =
+  | ({
+    readonly kind: 'child'
+    readonly id: SessionId
+    readonly activity: 'running' | 'inactive'
+    readonly hasChildren: boolean
+  } & (
+    | { readonly mode: 'one-shot'; readonly label?: string }
+    | { readonly mode: 'continuable'; readonly label: string }
+  ))
+  | {
+    readonly kind: 'diagnostic'
+    readonly id: SessionId
+    readonly reason: 'corrupt' | 'unsupported' | 'unavailable'
+  }
+```
+
+For each enumerated child, the ladder's result maps to a row through four states:
+
+| Ladder result | Row |
+| --- | --- |
+| Snapshot carries a non-null `subagent` identity | child row |
+| Snapshot present, `subagent` null sentinel or key absent, and the child is **inactive** | diagnostic row, reason `corrupt` (settled debris: a missing, corrupt, or unrecognized-version descriptor, no longer subdivided) |
+| Snapshot present, `subagent` null sentinel or key absent, and the child is **running** | no row (creation window: the descriptor is not yet appended — the same window the old implementation omitted) |
+| The cold full read fails | diagnostic row, reason `unavailable` |
+
+- `unsupported` is no longer produced: the type and the wire enum retain the member under "data structures stay as they are", and this note records it as no longer produced.
+- Descriptor-less settled debris moves from the old implementation's omit into the `corrupt` diagnostic — damaged, dead child sessions in the corpus are visible rather than silently vanishing, which is exactly the original motivation for keeping diagnostics.
+- Any registered unit whose fold/schema throws on this child's log is likewise contained as that child's diagnostic row, reason `corrupt` — a deterministic data fault, aligned with the old implementation's `SESSION_QUERY_CORRUPT_SESSION`→`corrupt` mapping semantics; live and cold are treated alike, isolation is per-child, and siblings and the listing itself are unaffected. It is orthogonal to "value absent + running → omit": the creation window means "no data yet", a fold throw means "the data is bad" — a poisoned running child also gets a `corrupt` row rather than an omit.
+
+Known boundary deviations (deliberately accepted, recorded with this note):
+
+- A fork child that died in its publication window, with an ancestor descriptor in its seed, gets the ancestor identity from last-wins and wrongly surfaces as a child row; resume still fails against the own-suffix fold authority (`NOT_RESUMABLE`). The old implementation omitted it via `seedLength` filtering; the projection unit cannot see the header, and this debris-grade deviation is accepted (`subagentTiming` has the same kind of pre-existing exposure).
+- Multiple descriptors in the own suffix: the old implementation judged corrupt; last-wins now takes the final one (the provider contract guarantees exactly one anyway).
+- A live/persisted header conflict: the old implementation made it per-child corrupt; enumeration now prefers live with no consistency check, the conflict goes unnoticed, and the live record forms the row.
+- A source-read failure on damaged storage (e.g. a bad surface rejected by the cold full read): the old implementation mapped it to per-child `corrupt`; it is now uniformly an `unavailable` row (the read side cannot tell the causes apart).
+- An unknown parent: the old implementation threw not-found through session-query ('parent session … was not found'); the subagent-owned merge now yields an empty subset for a nonexistent parent, enumeration returns an empty list, and later operations on the wire land as child-level subagent-not-found — a silent change of semantics and wording, recorded as explicitly accepted.
+- Rung 2's later-event window: a cache row lands right after the first own descriptor, the log then appends a second own descriptor (or a malformed payload setting the null sentinel), and the process crashes before the next checkpoint — from then on a cold listing's rung 2, admitted by the seq≥seedLength gate, keeps serving the row's old identity (the first own descriptor's value), diverging from the authoritative refold (last-wins, the second), and a rung-2 hit triggers no refold, so nothing notices. Three boundaries: ① the precondition is a second own descriptor on the same child, violating the establishing provider's append-exactly-once contract — corruption-class data, same family and source as the multi-descriptor deviation; ② it takes both "corruption + a crash missing every checkpoint (the two mandatory points, turn/end and disposal, and the count/interval throttle points all unmet)" at once; ③ a healthy child (exactly one own descriptor) is unaffected — what the seq gate admits is precisely the only true identity. Self-healing: any live run of that child (the turn/end mandatory checkpoint) or any moment that triggers cache.write overwrites the whole row with a fresh fold (whole-record replace), and rung 2 serves correctly from then on; the authoritative paths (the rung-3 refold, the live snapshot, the resume fold) are correct from the start, and the divergence exists only in listing reads while the child stays cold and the row is never rewritten. The mechanical fixes were not taken: gate reconciliation would need the log-end seq, unavailable to a zero-read cold path; a cache row carrying the revision is an opaque token, incomparable and a cross-domain schema change — filed as accepted under the "the cache is never authoritative" doctrine.
+
+Consuming surfaces: diagnostic handling across wire, tool, and GUI **stays entirely as it was, zero changes** (the `list_agents` description and output schema are untouched; the plugin only narrows its load requirement — `sessionQuery` dropped from inject). The only behavioral changes are in apiproxy: on the route segment, the `hasSubagentDescriptor()` scan is deleted and `hasSubagentOwner` looks only at `header.origin` — pre-#1569 data without `origin` is no longer recognized as a subagent owner; it never entered the catalog anyway, and the pre-release stance accepts this; and `subagents.history` is aligned with `session.history`'s source — a live child served from in-memory events and the registry's watermark snapshot, a cold child from `inspectServable` reading persistence directly with a detached fold, no query service involved, the SESSION_QUERY_* error arms retired with it, and the wire shape unchanged (the `history` JSDoc wording becomes the live in-memory snapshot / cold persisted log dual arm).
+
+### Change footprint
+
+| Area | Files | Change |
+| --- | --- | --- |
+| subagent | projection.ts, projection-types.ts, index.ts | New `subagent` unit and its registration |
+| subagent | list-children.ts and its types | Rewritten as subagent-owned enumeration plus the projection-ladder four-state mapping; the session-query dependency, per-child event reads, and in-place classification machinery deleted; error code `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` replaced by `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`; new optional dependency dsh-session-projection-cache (pure read acceleration, skipped when absent) |
+| host/apiproxy | api-proxy.ts | `hasSubagentDescriptor` deleted; the owner check looks only at `header.origin`; `subagents.history` shares `session.history`'s source — live from in-memory events and the registry's watermark snapshot, cold from `inspectServable` reading persistence directly with a detached fold, no query service, the SESSION_QUERY_* error arms retired with it |
+| tool | tool-subagent-control/list-agents.ts | Load requirement narrowed (`sessionQuery` dropped from inject); model-visible schema, description, and rendering unchanged |
+| wire/client | api/subagents.ts, runtime sessions/service.ts, GUI | Types, row shape, and diagnostic handling **unchanged**; api/subagents.ts only reworded the `history` JSDoc to the dual arm |
+| core/session, session-persistence, session-projection(-cache), session-query(-sqlite) | — | **Zero changes** |
+
+## Alternatives considered
+
+**mode/label into SessionHeader.** The strongest zero-read guarantee — rows form from the header alone. But a header shape change propagates into both persistence backends and the header compatibility check; SQLite rejects pre-existing data outright, and JSONL pre-existing data can only degrade to unknown or be backfilled. Read-time computation's answer for pre-existing data is "one `inspect` computation on first listing", touching no durable format.
+
+**The projection-cache ladder (v3 draft: `cachedSnapshot ?? coldSnapshot` plus fail-soft write-back).** The mechanism works — session-projection-cache's checkpoint ladder is designed for cold reads in the first place. But checkpoint write-back is a whole list-driven body of derived-data persistence and invalidation orchestration (floor/identity/putSoft); what was rejected is that orchestration as the primary mechanism. The settled three-rung ladder later reuses this cache opportunistically, read-only, as its second rung — no write-back, no orchestration, skipped when absent.
+
+**A bounded-read primitive on persistence to rescue pre-existing data.** Opens a new seam primitive for a one-time problem; superseded by the read-time `inspect` full read — the full read the first time pre-existing data is listed is itself the value retrieval.
+
+**Optional mode/label on list rows (one v4 draft).** Healthy data is always computable; optionality merely spills garbage-data handling complexity onto every consumer — each consuming surface has to grow filter branches and an unknown display state. The strong contract plus omit-when-uncomputable is cleaner.
+
+**Deleting diagnostic rows outright (one v5 draft).** Deletion turns corpus-corruption visibility into rows silently vanishing, and wire/tool/GUI would each have to absorb contract and snapshot changes; retention only asks the list side to derive the classification from projection-value absence and activity, at zero cost. That damaged, dead child sessions in the corpus must be visible is the original motivation for diagnostics' existence, and with retention the consuming surfaces stay wholly unchanged.
+
+**A registry computation failure channel (per-unit fault tolerance plus a supplementary `failures` field).** To report corruption and unrecognized versions to consumers, we once considered having the registry catch unit exceptions and attach a per-key failure state beside the snapshot. Rejected: a failure is not a value and needs no channel — a unit never throws, absence is itself the signal, worst case the computation comes back empty, and how that is presented is the consumer's problem. The discussion of this route left one independent observation behind: the vendored Cordis `emit` ([vendor/cordis/src/events.ts](../../../../vendor/cordis/src/events.ts)) catches nothing a listener throws, so with the projection driver hanging off `session/event`, a unit exception would escape along emit — which adds weight to the "a unit never throws" discipline, but fixing emit fault tolerance is outside this note's scope.
+
+**Values landed with query index preparation (the v4/v5 settled design, built for a time).** Projection values folded into session index rows during the sqlite backend's reconciliation rebuild, for zero log reads in the steady read state; the `projectionsFor` bulk read face, the invalidation reconciliation of row values stored against the `(key → stateVersion)` registration set, and the SCHEMA bump were all actually built. Retired wholesale: the direction was backwards — query infrastructure was forced to learn domain vocabulary (projection columns, registration-set reconciliation) while the sole consumer, the subagent list, is satisfied by read-time computation; with consumers down to zero, this derived persistence has no reason to exist. `SESSION_QUERY_PROJECTIONS_UNAVAILABLE` was deleted along with the read face.
+
+**Subagent hand-rolled parsing plus an in-process memo plus creation seeding (v6 draft).** To excise the session-query dependency, we once considered the subagent package parsing descriptor events itself, avoiding repeated full reads with an in-process memo, and seeding initial values at creation. Superseded by the v7 ladder: live goes through the `sessionProjections` watermark cache and cold through `registry.restore`, reusing the registry's single fold authority — no second copy of descriptor-interpretation logic appears, and no process-state cache or seeding ordering is introduced.
+
+**DeepReadonly on the session-query output surface (a read-path overhaul experiment).** Make the public query outputs deeply readonly to pin immutable borrowing at the type level. Rejected on evidence: 3 TS2589 occurrences (excessively deep type instantiation) plus 17 sites of array-position contagion (consumers' array methods and spread sites forced to follow); deep immutability is guaranteed by core/session's runtime deep freeze, and that read-path overhaul is not part of this note.
+
+## Verification
+
+`packages/subagent/subagent/tests/list-children.spec.ts` is rewritten to this contract: live-only listing without persistence, query services, or the continuation runtime; with the registry absent, even zero children loudly report `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`; a live child incurs zero `inspect` throughout while a cold child incurs exactly one per listing; multiple descriptors resolve last-wins to the final one; corrupt payloads and unknown versions fold to `corrupt`; a cold-read failure maps to `unavailable` and retries on the next listing; the ancestor descriptor in a fork seed forms a row under that identity (pinning deviation one); ordinary forks and descendants without a subagent origin neither enter the list nor count toward `hasChildren`; `createdAt`-then-id ordering; an unmounted provider does not affect listing; compacted and uncompacted twins list identically; the three cases of pre-abort, persistence listing, and cold-read cancellation all normalize to `CANCELLED`; the empty list and stable error codes. A hostile-unit dual-path probe (`apply` lazily poisons, `view` detonates) proves that any registered unit's fold/schema throw on this child's log is contained as that child's `corrupt` row on both the live and the cold retrieval paths, with siblings and the listing itself unaffected. Second-rung cases: an own-seq identity used directly with zero `inspect`, a fork seed's ancestor identity (seq inside the seed range) rejected by the gate and falling through, an in-row identity absence (null sentinel or absent key) falling through, an absent cache service falling through, and a poisoned cache row silently falling through to the refold; cold-path lifecycle tampering degrades to `corrupt` field by witness field (`it.each` over the seven). The `tool-subagent-control` list-agents tests are updated for the narrowed load requirement; `optional-session-query.spec.ts` is deleted with the dependency it guarded; the existing keyless snapshots (`subagent-list-agents` among others) are unchanged, pinning that the healthy path's wire and model-visible surfaces did not move; a new keyless snapshot, `subagent-diagnostic` (examples/headless-agent), pins the four-state mapping's diagnostic classification — the model-visible changes such as descriptor-less settled debris becoming a `corrupt` row.
+
+## Consequences
+
+- Listing a live child reads zero log throughout; with the cache unmounted or missed, a cold child pays one full `inspect` read per listing, at a cost proportional to its transcript size and repeated with listing frequency — compute-and-discard is the settled stance: no cache of its own is built, nothing is written back, and short-term repeated full reads of the same id can hit the preparation-phase LRU, though listing does not depend on it.
+- The subagent list no longer requires a query backend: both pure-live and persistence-less deployments can list; `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` is gone, and loading the `list_agents` plugin no longer requires `sessionQuery`.
+- Identity interpretation exists only in the single unit registered with the registry: the list's three-rung ladder and GUI history's cold read all use the registry's and the cache's existing reads (snapshot, cachedSnapshot, restore), and no bypass fold exists; if some future consuming surface bypasses the registry with a hand-written fold, values will drift across read faces — a discipline this design requires be maintained, not a mechanical guarantee.
+- Per-child isolation is back: a single child's cold-read failure loses only that row and healthy siblings are unaffected; a persistence listing failure still fails the whole enumeration.
+- The diagnostic and enumeration semantics leaves six boundary deviations (a stillborn fork surfacing under its ancestor's identity, multiple descriptors resolving to the last, header conflicts going unnoticed, damaged-source read failures shifting from `corrupt` to `unavailable`, an unknown parent yielding an empty list instead of not-found, and rung 2's later-event window); the full semantics is in the known-boundary-deviations list; the first four are display or classification deviations on debris-grade data, the unknown-parent one is a silent query-semantics change, and the rung-2 window is a self-healing cache-serving divergence under the double condition of corruption plus a crash; resume authorization is unaffected throughout, all explicitly accepted.
+- Pre-#1569 data without `origin` is no longer recognized as a subagent owner; it never entered the catalog anyway, and pre-release carries no compatibility promise.
+
+## Related
+
+- [Durable subagent catalog and list_agents](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md) — partially superseded by this note: the descriptor remains the durable authority for mode/label and the fold input, while the list's enumeration and value retrieval move to the subagent-owned merge plus the projection ladder.
+- [Session projections and command lifecycle logging](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md) — the authority for the registry contract; this note adds the `subagent` identity unit to it and becomes a consumer instance of the two existing reads, snapshot and restore.
+- [Web subagent conversations](../feature/2026-07-27-web-subagent-conversations.md) — the origin of `SessionHeader.origin` (#1569), the first half of taking identity determination off the log; its history cold read (inspect prefix plus registry fold) is the same-shape precedent for this note's value ladder.
+- [Reusable Session preparation before publication](2026-08-05-session-preparation.md) — the `inspect()` cold read and LRU reuse; the cold child's full-read cost model builds on it.
@@ -0,0 +1,184 @@
+# Agent Note: subagent 列表经投影单元读取身份
+
+Status: implemented
+
+[English](2026-08-06-subagent-list-identity-projection.md) | 中文
+
+## 问题
+
+重写前的 `SubagentService.listChildren` 对每个 `header.origin === 'subagent'` 的直接 child，每次列表都执行 `listEvents` 加 `readEvent` 两次整日志物化，且每次物化都伴随整日志 structuredClone，只为从描述符事件里折出 mode 与 label 两个字段。描述符在日志中的位置不固定——fork 前缀任意长，zstd 压缩帧没有 seq 索引——因此定位没有捷径；这条路径没有任何缓存，代价随 transcript 长度 × child 数量 × 列表频率放大。它还把 session-query 拉成列表的硬依赖：没有 query backend 的部署，`list_agents` 以 `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` 整体拒绝，尽管枚举所需只是 header 事实。
+
+同一根因还有第二个症状：host 侧的 `hasSubagentDescriptor()` 在每次 Agent 绑定 RPC 的属主判定上扫描目标会话的 own suffix，即便 `SessionHeader.origin` 已经回答了同一个问题的绝大部分。
+
+根因在于 [durable-subagent-catalog 决策](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md)把描述符事件（`subagent/descriptor`）定为目录的唯一持久权威，却没有为描述符读取配任何缓存层，并把逐 child 双读明确接受为"无索引的正确性基线"。[web subagent conversations](../feature/2026-07-27-web-subagent-conversations.md)（#1569）已把"是不是 subagent"放进了 header（`SessionHeader.origin`），身份判定不再读日志；mode 与 label 仍然要扫。
+
+## 决策
+
+mode 与 label 由新的 `subagent` projection unit（纯身份两臂）折叠，unit 是折叠规则的唯一权威；`listChildren` 不再依赖 session-query——枚举是 subagent 自管的 live-preferred 合并，取值走三级"算完即止"阶梯：live child 同步读注册表的既有水位缓存（零日志读）；cold child 先问可选的 `sessionProjectionCache` checkpoint，取到过 seq 门的身份即定值；否则一次 `persistence.inspect` 整读加 `registry.restore` 折叠。无索引、不自建缓存、无回写。
+
+消除逐 child 扫描的出路有三类：把 mode/label 提升进 header（写路承担）；为投影建持久派生（checkpoint 阶梯，或随查询索引重建落值、读端对账）；读时现算（live 走水位缓存，cold 一次整读）。本记录取第三条。"值随查询索引落库"曾是本记录的定稿方向并一度施工，最终整体退役：查询基础设施被迫认识领域词汇，而唯一消费方读时现算即可满足——live child 的零读由 session-projection 既有水位缓存白拿，cold child 的一次整读被"算完即止"显式接受。前两条与退役理由详见考虑过的替代方案一节。
+
+要点：
+
+- **subagent 列表不依赖 session-query**：枚举由 subagent 自管的 live-preferred 合并完成，mode/label 经 `ctx.sessionProjections` 取值；没有 query backend 的部署照常列表。
+- **取值三级"算完即止"阶梯**：live child 读 `sessionProjections.snapshot()`（注册表既有水位缓存，零日志读）；cold child 先读可选 `sessionProjectionCache.cachedSnapshot(header)`，values 含非 null 且过 seq 门（`seq >= seedLength ?? 0`）的 `subagent` 身份即直接用；否则一次 `persistence.inspect` 整读加 `registry.restore({}, events, 0)` 折叠；再没有就没有——不自建缓存、无回写、无索引。
+- **`subagent` projection unit 是折叠规则唯一权威**：live snapshot、cold restore、GUI history 的 detached 折叠全部经 registry 计算，不存在第二份描述符解释逻辑。
+- **header、描述符（v2）、session-persistence、session-projection(-cache)、session-query(-sqlite) 全部零改动**；存量数据第一次被列表时一次 `inspect` 现算获得精确值，无 unknown 降级态、无迁移。
+
+与既有记录的关系：
+
+- 本记录取代 [durable-subagent-catalog](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md) 中列表读路径的两项设计：经 `sessionQuery.traceSession` 枚举，与逐 child 读取描述符事件（`listEvents` 加精确 `readEvent` 双读、就地诊断分类）。diagnostic 行语义保留，分类改由列表按投影值缺席与 activity 派生；描述符事件仍是 mode/label 的唯一持久权威与折叠输入，恢复鉴权与激活契约不动。属部分取代，两记录保持交叉链接。
+- [session-projection RFC](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md) 的 registry 契约（`ProjectionDefinition`、`snapshot`、`restore`）零改动，本记录只为其新增 `subagent` 身份 unit 一个注册项，并成为 snapshot（live）与 restore（cold）两处既有读法的又一消费实例——GUI history 的冷读已是同款。折叠规则只在 registry 注册一份；任何消费面都经 registry 计算，不存在第二份折叠逻辑。
+
+### `subagent` projection unit
+
+挂在现有 `subagentTiming` 旁（[projection.ts](../../../../packages/subagent/subagent/src/projection.ts)、[projection-types.ts](../../../../packages/subagent/subagent/src/projection-types.ts)），key 为 `subagent`：
+
+```ts ignore-check
+export type SubagentIdentityProjection =
+  | { mode: 'one-shot'; label?: string; seq: number }
+  | { mode: 'continuable'; label: string; seq: number }
+
+declare module '@deepseek-ai/dsh-session-projection/types' {
+  interface SessionProjectionMap {
+    subagent: SubagentIdentityProjection | null
+  }
+}
+```
+
+- 投影是纯身份，**projection 体系不做失败通道**：unit 永不抛错；载荷损坏、版本不认识与整日志没有描述符一样，折叠结果是**可序列化的 null 哨兵**——map 条目为 `SubagentIdentityProjection | null`，非可选、非 undefined/缺 key。理由：registry 的 onChanged 推送经 JSON 序列化，undefined 字段被 stringify 丢弃，客户端帧校验拒收，消费方存储的旧身份将永不更新；null 完好过帧，消费方以哨兵替换旧身份。判定纪律：消费面把 null 与 undefined（仅 JSON 边界丢 key 可产生）一律视为无值。"算出来没有"如何呈现是消费方自己的事（见下文 `listChildren` 四态映射）。
+- label 强度由描述符 schema 决定：continuable 的 label 解析强制必有，one-shot 的本就可选；mode/label 判别与下文 child 行的强契约完全一致（行不携带 `seq`——它是投影内部的 own-suffix 证明）。
+- 身份携带 `seq`：折出该身份的 `subagent/descriptor` 事件 seq，两臂必有、null 哨兵无——`seq >= header.seedLength ?? 0` 证明身份折叠自 child 自身后缀，而非 fork 种子回放的祖先描述符。state 增 `seq` 使 unit `stateVersion` 升至 2，既存 checkpoint 行按 registry 契约版本失配失效、落权威重折。
+- 折叠规则：`subagent/descriptor` last-wins，与 `subagentTiming` 同一条 descriptor-reset 纪律——fork 前缀里的祖先描述符被自身描述符覆盖。损坏或版本不认识的载荷同样 last-wins：重置为 null 哨兵而非保留先前身份，健康祖先的 fork 不会继承自身描述符立不住的身份。
+
+### 枚举：subagent 自管 live-preferred 合并
+
+`listChildren`（[list-children.ts](../../../../packages/subagent/subagent/src/list-children.ts)）的枚举不经任何查询服务：`ctx.sessions.list()` 与 `ctx.get('sessionPersistence')?.list()` 两个来源按 id 合并，live 记录整条覆盖同 id 持久化记录、不做 header 一致性校验。枚举所需全部是 header 事实：
+
+- 过滤：`header.origin === 'subagent' && header.parentSession === parentSessionId`。
+- `hasChildren`：同一份合并材料向下看一层——存在 `origin === 'subagent'` 且 `parentSession` 为该 child 的直接后代。
+- `activity`：live 记录为 `running`，仅存在于持久化的为 `inactive`。
+- 排序：`createdAt` 升序、再按 child id 升序（与旧契约一致）。
+- **persistence 缺席退为 live-only 枚举，不报错**：没有 persistence 的部署，cold child 本就无法 resume，列出 live child 仍然有意义。（对照：旧实现在 sessionQuery 缺失时整体拒绝。）
+- persistence 列表失败使整次枚举失败；per-child 隔离只作用于逐 child 的冷读。
+
+### 取值：三级"算完即止"阶梯
+
+对每个枚举出的 child，mode/label 取值走三级阶梯——算完即止，不自建缓存、无回写（第三级与 apiproxy `session.history` 的冷读同款）：
+
+| 级 | 读法 | 成本 |
+| --- | --- | --- |
+| 1：live child | `ctx.sessionProjections.snapshot(session).values.subagent` | 零日志读——注册表既有水位缓存，同步取值 |
+| 2：cold child，cache 命中 | 可选 `sessionProjectionCache.cachedSnapshot(header)`，values 含非 null 的 `subagent` 身份且 `identity.seq >= header.seedLength ?? 0` 才直接用——own descriptor 一经追加不可变，seq 门证明该值折叠自 child 自身后缀，无视行水位 | 零日志读 |
+| 3：cold child，兜底 | `persistence.inspect(id)` 整读 + `registry.restore({}, events, 0).snapshot.values.subagent` | 每次列表一次整读现算 |
+
+- 错误契约：`ctx.sessionProjections` 未挂载是配置错误，`listChildren` 在枚举前无条件检查并以 `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE` 响亮失败——零 children 的部署同样确定失败，不因列表恰好为空而掩盖配置问题。会话存储同理：`ctx.get('sessions')`（严格全局读取，不走调用方作用域的属性代理）缺席以 `SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE` 失败。两码的 wire 映射有别：apiproxy 只为 `PROJECTIONS_UNAVAILABLE` 设专门 wire 脸，`SESSION_STORE_UNAVAILABLE` 走通用 internal 兜底——apiproxy 组合自身就 inject `sessions`，该错误在其部署不可达，专门映射违反 need 原则。`SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` 已随 session-query 依赖删除。
+- cache 是纯可选加速层：服务缺席判空跳过——无错误码、不进配置校验（与 `sessionProjections` 的响亮契约相对）。第二级任何抛错（包括缓存内任一 unit 行中毒使 `viewCheckpoint` 引爆）静默落第三级——缓存是派生数据，其故障不产生 `corrupt` 判决，终审归权威重折；checkpoint 切面早于描述符的行，`subagent` key 天然缺席，自动落底，无特判；行里的 null 哨兵同样不作数——一律落第三级，由权威重折裁决。创建窗口内的 count/interval checkpoint 可能把 fork 种子回放的祖先身份落进行——祖先 seq 落在 seed 区间，被 seq 门拒绝，同样落第三级裁决。
+- per-child 隔离：单 child 的 cold 整读失败只使该行成为 `unavailable` diagnostic，下次列表自然重试，不影响 sibling（见四态映射）。
+- 冷路径的生命周期见证：preparation 的结果必须仍指向枚举时的那个生命周期——见证字段集与旧 SOURCE_CONFLICT 检查同款七字段（version、id、createdAt、cwd、parentSession、seedLength、delegationDepth）；同 id 删除后重新发布的会话对旧 parent 的目录降级为 `corrupt` 行，不外漏新 owner 的 child。
+- 冷读并发以常数 4 有界——它约束的是本地介质的一次只读扫描而非部署行为；出现联网 persistence backend 时提升为验证过的 `Config` 字段。
+- 冷读成本如实记录：cache 未挂载或未命中时，cold child 每次列表才付一次整读，成本与其 transcript 大小成正比；定案"算完即止"，不自建缓存。整读经 `inspect()` 走 [Session 准备阶段](2026-08-05-session-preparation.md)的冷读，同 id 短期重复读取可命中其 LRU 复用，但列表不依赖此。live child 全程零日志读。
+- 取消：每次 persistence 读前后检查调用方 signal，abort 之后才结算的读拒绝归一化为稳定错误码 `CANCELLED`。
+
+### 权威模型
+
+- session log 是唯一权威；本方案不新增任何派生持久化——没有索引值、没有自己的 checkpoint、没有进程 memo；第二级读取的 `sessionProjectionCache` checkpoint 是既有组合项的派生数据，本方案只读不写。取值现算现弃，值的新鲜度就是读取时点的 live 状态或持久化 revision（own descriptor 一经追加不可变——缓存身份过 seq 门后无陈旧性问题，门防的是种子回放的祖先身份）。
+- Session 与 persistence 写路完全不感知列表与投影消费：没有事件监听回写，没有写时折叠。
+- 枚举与取值不构成第二个鉴权来源，也不让尚未发布的 child 可见——两个来源只见已发布的 live 记录与已落盘的持久化记录，与 durable-subagent-catalog 记录对派生读面立下的规则一致。
+
+### `listChildren` 行形状与消费面
+
+`SubagentListEntry` **数据结构与重写前完全一致**——child 与 diagnostic 两臂、`kind` 判别、reason 三值、child 臂的 mode/label 强契约全部保留；变化只在诊断的信息来源：投影体系没有失败通道，diagnostic 由列表按投影值缺席与 activity 派生，列表本身零事件解析。"没有就等待硬读取"保证阶梯对健康数据必然算得出 mode/label。
+
+```ts ignore-check
+export type SubagentListEntry =
+  | ({
+    readonly kind: 'child'
+    readonly id: SessionId
+    readonly activity: 'running' | 'inactive'
+    readonly hasChildren: boolean
+  } & (
+    | { readonly mode: 'one-shot'; readonly label?: string }
+    | { readonly mode: 'continuable'; readonly label: string }
+  ))
+  | {
+    readonly kind: 'diagnostic'
+    readonly id: SessionId
+    readonly reason: 'corrupt' | 'unsupported' | 'unavailable'
+  }
+```
+
+对每个枚举出的 child，阶梯取值结果按四态映射成行：
+
+| 阶梯取值结果 | 行 |
+| --- | --- |
+| 快照含非 null 的 `subagent` 身份 | child 行 |
+| 快照在、`subagent` 为 null 哨兵或 key 缺席，且 child **inactive** | diagnostic 行，reason `corrupt`（定局残骸：无、损坏或版本不认识的描述符，不再细分） |
+| 快照在、`subagent` 为 null 哨兵或 key 缺席，且 child **running** | 行不出现（创建窗口：描述符尚未追加，与旧实现同窗口 omit） |
+| cold 整读失败 | diagnostic 行，reason `unavailable` |
+
+- `unsupported` 不再被产出：类型与 wire 枚举按"数据结构保持现状"留存该成员，本记录留档其为不再产出。
+- descriptor-less 定局残骸从旧实现的 omit 归入 `corrupt` diagnostic——库里的坏、死子会话可见，不静默消失，这正是保留 diagnostic 的原始动机。
+- 任一注册 unit 的 fold/schema 在该 child 日志上抛错，同样收纳为该 child 的 diagnostic 行，reason `corrupt`——确定性数据故障，对齐旧实现 `SESSION_QUERY_CORRUPT_SESSION`→`corrupt` 的映射语义；live 与 cold 同待遇，逐 child 隔离，sibling 与列表本身不受影响。它与「无值 + running → omit」正交：创建窗口是"尚无数据"，fold 抛错是"数据坏了"——running 的中毒 child 也出 `corrupt` 行而非 omit。
+
+已知边界偏差（有意接受，随本记录留档）：
+
+- 死于发布窗口的 fork child，seed 里若有祖先描述符，last-wins 会给出祖先身份，误现为 child 行；恢复仍按 own-suffix 折叠权威失败（`NOT_RESUMABLE`）。旧实现靠 `seedLength` 过滤将其 omit；projection unit 看不到 header，接受此残骸级偏差（`subagentTiming` 有同类既有暴露）。
+- own suffix 出现多个描述符，旧实现判 corrupt，现 last-wins 取末者（provider 契约本就保证恰一）。
+- live/persisted header 冲突，旧实现是 per-child corrupt；现枚举 live 优先、不做一致性校验，冲突不再被察觉，以 live 记录成行。
+- 损坏存储的源读失败（如坏 surface 被冷读整读拒收），旧实现映射 per-child `corrupt`，现统一成 `unavailable` 行（读侧无从区分成因）。
+- 未知 parent，旧实现经 session-query 抛 not-found（'parent session … was not found'）；现自管合并对不存在的 parent 得到空子集，枚举返回空列表，wire 上后续操作落到 child 级 subagent-not-found——语义与文案的静默变化，显式接受。
+- rung 2 的更晚事件窗口：cache 行恰在首个自有描述符之后落盘，日志随后追加第二个自有描述符（或 malformed 载荷置 null 哨兵），且进程在下一次 checkpoint 前崩溃——此后冷列表的 rung 2 凭 seq≥seedLength 门持续供出行内旧身份（第一个自有描述符的值），与权威重折（last-wins 第二个）分歧，且 rung 2 命中期间不触发重折、无从察觉。边界三条：①前提是同一 child 出现第二个自有描述符，违反 establishing provider"恰追加一次"契约，属损坏类数据，与多描述符偏差同族同源；②需"损坏 + 崩溃错过 checkpoint（turn/end 与 disposal 两个 mandatory 点及 count/interval 节流点全部未及）"双条件同时成立；③健康 child（恰一自有描述符）不受影响——seq 门放行的正是唯一真身份。自愈条件：该 child 任一次 live 运行（turn/end mandatory checkpoint）或任何触发 cache.write 的时点，都会以新 fold 整行覆写（whole-record replace），rung 2 随即供正；权威路径（rung 3 重折、live snapshot、resume 折叠）自始正确，分歧只存在于持续冷、行未再更新期间的列表读。机制修法不采：gate 对账需知日志末端 seq，冷路径零读不可得；cache 行携 revision 是 opaque token，无法比较且跨域改 schema——按"cache 永不为权威"总纲归档为接受项。
+
+消费面：wire、tool、GUI 的 diagnostic 处理**全部保持原状零改动**（`list_agents` 的 description 与 output schema 未动；该插件仅加载要求收窄——inject 去掉 `sessionQuery`）。行为上动的只有 apiproxy：路由段的 `hasSubagentDescriptor()` 扫描已删除，`hasSubagentOwner` 只看 `header.origin`——pre-#1569 的无 `origin` 存量不再被认作 subagent 属主，其本就不进目录，pre-release 立场接受；`subagents.history` 与 `session.history` 同源对齐——live child 用内存事件与注册表水位快照，cold child 用 `inspectServable` 直读持久化并 detached 折叠，不经查询服务，SESSION_QUERY_* 错误臂随之退役，wire 形状不变（`history` 的 JSDoc 措辞改为 live 内存快照／cold 持久日志双臂）。
+
+### 改动落点
+
+| 区域 | 文件 | 改动 |
+| --- | --- | --- |
+| subagent | projection.ts、projection-types.ts、index.ts | 新 `subagent` unit 与注册 |
+| subagent | list-children.ts 及类型 | 重写为自管枚举 + 投影阶梯四态映射；删 session-query 依赖、逐 child 事件读取与就地分类机器；错误码 `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` 换 `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`；新增可选依赖 dsh-session-projection-cache（纯加速读取，缺席跳过） |
+| host/apiproxy | api-proxy.ts | 删 `hasSubagentDescriptor`，属主判定只看 `header.origin`；`subagents.history` 与 `session.history` 同源——live 用内存事件与注册表水位快照，cold 用 `inspectServable` 直读持久化并 detached 折叠，不经查询服务，SESSION_QUERY_* 错误臂随之退役 |
+| tool | tool-subagent-control/list-agents.ts | 加载要求收窄（inject 去 `sessionQuery`）；model-visible schema、描述与渲染零改动 |
+| wire/client | api/subagents.ts、runtime sessions/service.ts、GUI | 类型、行形状与 diagnostic 处理**零改动**；api/subagents.ts 仅 `history` 的 JSDoc 措辞改为双臂 |
+| core/session、session-persistence、session-projection(-cache)、session-query(-sqlite) | — | **零改动** |
+
+## 考虑过的替代方案
+
+**mode/label 进 SessionHeader。** 零读保证最强——列表只看 header 就能成行。但 header 形状变更传导两个 persistence backend 与 header 兼容检查；SQLite 存量直接拒收，JSONL 存量只能 unknown 降级或 backfill。读时现算对存量的答案是"第一次列表一次 `inspect` 现算"，不碰持久格式。
+
+**projection-cache 阶梯（v3 稿：`cachedSnapshot ?? coldSnapshot` 加 fail-soft 写回）。** 机制成立——session-projection-cache 的 checkpoint 阶梯本就为冷读设计。但 checkpoint 写回是一套由列表驱动的派生数据持久化与失效编排（floor/identity/putSoft）；被否的是这套编排作为主机制。定稿的第三级阶梯后来以只读方式机会性复用该缓存作第二级——无写回、无编排、缺席即跳过。
+
+**给 persistence 加有界读原语抢救存量。** 为一次性问题新开 seam 原语；被读时 `inspect` 整读取代——存量第一次被列表时的整读就是取值本身。
+
+**list 行 mode/label 可选化（v4 一稿）。** 健康数据必然可算；可选化只是把垃圾数据的处理复杂度外溢给全部消费方——每个消费面都要长出过滤分支和 unknown 展示态。强契约加算不出即 omit 更干净。
+
+**彻底删除 diagnostic 行（v5 一稿）。** 删除把库损坏的可见性外溢为行静默消失，wire/tool/GUI 反要各自承担契约与快照变更；而保留只需列表侧按投影值缺席与 activity 派生分类，零成本。库里的坏、死子会话必须可见是 diagnostic 存在的原始动机，保留后消费面整体零改动。
+
+**registry 计算失败通道（per-unit 容错加 `failures` 附加字段）。** 为把损坏、版本不认识报告给消费方，曾考虑让 registry 捕获 unit 异常并在 snapshot 旁附 per-key 失败态。被否：failure 不是值，也不必是通道——unit 永不抛错，缺席本身就是信号，"大不了算出来没有"，如何呈现是消费方要考虑的事。该路线讨论顺带留下一个独立观察：vendor cordis 的 `emit`（[vendor/cordis/src/events.ts](../../../../vendor/cordis/src/events.ts)）对 listener 抛错零捕获，投影驱动挂在 `session/event` 上时 unit 异常会沿 emit 逃逸——这加重了"unit 永不抛错"纪律的分量，但 emit 容错的修复不属于本记录范围。
+
+**值随 query 索引 preparation 落库（v4/v5 定稿，一度施工）。** 投影值在 sqlite backend 的对账重建里折叠落进 session 索引行，读稳态零日志；`projectionsFor` 批量读面、行值随 `(key → stateVersion)` 注册集存储的失效对账与 SCHEMA bump 均已施工过。整体退役：方向反了——查询基础设施被迫认识领域词汇（投影列、注册集对账），而唯一消费方 subagent 列表读时现算即可满足；消费方归零后，这套派生持久化没有存在理由。`SESSION_QUERY_PROJECTIONS_UNAVAILABLE` 随读面一并删除。
+
+**subagent 手工 parse 加进程 memo 加创建播种（v6 稿）。** 为摘除 session-query 依赖，曾考虑 subagent 自己解析描述符事件、以进程内 memo 避免重复整读、创建时播种初值。被 v7 阶梯取代：live 走 `sessionProjections` 水位缓存、cold 走 `registry.restore`，复用 registry 这一份折叠权威，不再出现第二份描述符解释逻辑，也不引入进程态缓存与播种时序。
+
+**session-query 输出面 DeepReadonly（读路径改造实验）。** 公开查询输出深只读化，以在类型层面钉死不可变借用。实证否决：3 处 TS2589（类型实例化过深）加 17 处数组位传染（消费方数组方法与展开处被迫跟改）；深层不可变由 core/session 的运行时深冻结保证，该读路径改造未纳入本记录。
+
+## 验证
+
+`packages/subagent/subagent/tests/list-children.spec.ts` 重写为本契约：无 persistence、query 服务与继续运行时的 live-only 列表；registry 缺席时零 children 也响亮报 `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`；live child 全程零 `inspect`、cold child 每次列表恰一次；多描述符 last-wins 取末者；损坏载荷与未知版本折为 `corrupt`；冷读失败映射 `unavailable` 且下次列表重试；fork seed 里的祖先描述符按该身份成行（偏差一钉住）；普通 fork 与无 subagent origin 的后代不入列也不计入 `hasChildren`；`createdAt`→id 排序；provider 未挂载不影响列表；压缩与未压缩孪生一致；预中止、持久化列表与冷读取消三例归一 `CANCELLED`；空列表与稳定错误码。敌意 unit 双路探针（`apply` 惰性置毒、`view` 引爆）证明任一注册 unit 在该 child 日志上的 fold/schema 抛错，在 live 与 cold 两条取值路径上都收纳为该 child 的 `corrupt` 行，sibling 与列表本身不受影响。第二级例：own-seq 身份直用零 `inspect`、fork 种子祖先身份（seq 落在 seed 区间）被门拒绝落底、行内无身份（null 哨兵或 key 缺席）落底、cache 服务缺席落底、缓存行中毒静默落底重折；冷路径 lifecycle 篡改按见证七字段逐一（`it.each`）降级为 `corrupt`。`tool-subagent-control` 的 list-agents 测试随加载要求收窄更新；`optional-session-query.spec.ts` 随依赖消失删除；既有无密钥快照（`subagent-list-agents` 等）零变化，钉住健康路径的 wire 与 model-visible 面不变；新增无密钥快照 `subagent-diagnostic`（examples/headless-agent）钉住四态映射的诊断分类——descriptor-less 定局残骸成 `corrupt` 行等模型可见变化。
+
+## 后果
+
+- live child 的列表全程零日志读；cold child 在 cache 未挂载或未命中时每次列表一次 `inspect` 整读，成本与其 transcript 大小成正比、随列表频率重复——定案"算完即止"，不自建缓存、不回写，同 id 短期重复整读可命中准备阶段 LRU 但列表不依赖它。
+- subagent 列表不再要求 query backend：纯 live 与无 persistence 的部署都能列表；`SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` 消失，`list_agents` 插件加载不再要求 `sessionQuery`。
+- 身份解释只存在于 registry 注册的一份 unit：列表三级阶梯与 GUI history 冷读走的都是 registry 与 cache 的既有读法（snapshot、cachedSnapshot、restore），不存在旁路折叠；若未来某消费面绕开 registry 手写折叠，各读面的值将漂移——这是本设计要求维持的纪律，不是机制保证。
+- per-child 隔离回归：单 child 冷读失败只损失该行，healthy sibling 不受影响；persistence 列表失败仍使整次枚举失败。
+- 诊断与枚举语义留下六处边界偏差（stillborn fork 祖先身份误现、多描述符取末者、header 冲突不再被察觉、损坏源读失败由 `corrupt` 转 `unavailable`、未知 parent 由 not-found 改为空列表、rung 2 更晚事件窗口），完整语义见已知边界偏差清单；前四处为残骸级数据的展示或分类偏差，未知 parent 一处是查询语义的静默变化，rung 2 窗口一处是损坏加崩溃双条件下可自愈的缓存供值分歧；恢复鉴权均不受影响，显式接受。
+- pre-#1569 的无 `origin` 存量不再被认作 subagent 属主；其本就不进目录，pre-release 无兼容承诺。
+
+## 相关
+
+- [durable-subagent-catalog 与 list_agents](../feature/2026-07-22-durable-subagent-catalog-and-list-agents.md)——被本记录部分取代：描述符仍是 mode/label 的持久权威与折叠输入，列表的枚举与取值改为自管合并加投影阶梯。
+- [session projections 与命令生命周期日志](../../proposed/architecture/2026-07-27-session-projection-and-command-log.md)——registry 契约的权威；本记录为其新增 `subagent` 身份 unit，并成为 snapshot/restore 两处既有读法的消费实例。
+- [web subagent conversations](../feature/2026-07-27-web-subagent-conversations.md)——`SessionHeader.origin` 的出处（#1569），身份判定去日志化的前半步；其 history 冷读（inspect 前缀加 registry 折叠）是本记录取值阶梯的同款先例。
+- [发布前可复用的 Session 准备阶段](2026-08-05-session-preparation.md)——`inspect()` 冷读与 LRU 复用；cold child 整读的成本模型建立其上。
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md
-2026-08-02-message-fork-actions-require-completed-turn-tail.md: f2e7fd67b65a6ce4a86ba3f4405f78842be8f234
-2026-08-02-message-fork-actions-require-completed-turn-tail.zh.md: 2c3feeaa3ef01dbde67faa73257520918996f9c8
+2026-08-02-message-fork-actions-require-completed-turn-tail.md: abdcbc79948c67619bb70a8a87741046f65b8838
+2026-08-02-message-fork-actions-require-completed-turn-tail.zh.md: a93b572c6db3c76ce3869747fd9a7660bf3ea395
@@ -12,6 +12,8 @@ The Web conversation attached branch to the last assistant node with nonempty te

 `ConversationSnapshot.turnEnds` retains the completed turn boundaries present in the raw event window. The conversation view walks transcript nodes through each boundary and enables branch only when the boundary's last node is a user message, a durable steering message, or a content-bearing assistant message. Open turns have no eligible message, and a later tool result, reasoning-only interruption, turn error, or other transcript node leaves branch unavailable on earlier messages. The unavailable control stays visible, focusable, and hoverable; `aria-disabled`, a tooltip, and `aria-describedby` explain the completed-tail requirement without sending a Host request. Copy and clock remain available under their existing message chrome, and the Host's completed-turn fork semantics remain unchanged.

+The message-bubble half of this eligibility is superseded by the [user-bubble branch removal](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md): user and steering bubbles no longer render the control at all, so only content-assistant tails may fork; the assistant-side gate and its visible-but-unavailable presentation stand.
+
 This narrows the message eligibility established by the earlier [Web session fork action decision](../feature/2026-07-27-web-session-fork-actions.md). Session-row forking still selects the latest completed turn, and eligible message actions still pass their event seq through the shared client runtime operation.

 ## Alternatives considered
@@ -12,6 +12,8 @@ Web 会话把分支操作挂到每个轮次中最后一个文本非空的 assist

 `ConversationSnapshot.turnEnds` 保留原始事件窗口中的已完成轮次边界。会话视图按各边界遍历 transcript（文本记录）节点，仅当边界的最后一个节点是用户消息、持久 steering（中途引导）消息或含内容的 assistant 消息时才启用分支操作。开放轮次没有符合条件的消息；如果后面还有工具结果、只有推理内容的中断、轮次错误或其他 transcript 节点，较早消息上的分支操作会保持不可用。不可用的控件仍然可见、可聚焦、可悬停；`aria-disabled`、tooltip 与 `aria-describedby` 会说明已完成尾部这一要求，且不会发送 Host 请求。复制和时钟仍可在既有消息 chrome 下使用，Host 按已完成轮次 fork 的语义保持不变。

+本资格判定中消息气泡的那一半已被 [user 气泡分支移除决策](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md)取代：user 与 steering 气泡不再渲染该控件，因此只有内容 assistant 尾部可以 fork；assistant 侧门禁及其可见但不可用的呈现保持有效。
+
 本决策收紧了较早的 [Web 会话 fork 操作决策](../feature/2026-07-27-web-session-fork-actions.md)所定义的消息资格。Session 行 fork 仍选择最新的已完成轮次；符合条件的消息操作仍通过共享 client 运行时操作传递其事件 seq。

 ## 考虑过的替代方案
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-04-conversation-column-one-axis-scroll.md
+2026-08-04-conversation-column-one-axis-scroll.md: 9a487c506a75033d0854f08e95da24704309003d
+2026-08-04-conversation-column-one-axis-scroll.zh.md: 23441a7c8655d1f19d3c0fe0f661f81f69b55dba
@@ -0,0 +1,37 @@
+# Agent Note: The conversation column scrolls on one axis
+
+Status: implemented
+
+English | [中文](2026-08-04-conversation-column-one-axis-scroll.zh.md)
+
+## Problem
+
+Narrowing the center column — by the window or by the sidebar drag — put a horizontal scrollbar under the whole conversation column on the hero. The bleeding element is the hero's decorative backdrop ellipse: `.heroGlow` is sized `1051/776` of the hero box so its blur scales in userSpace with the input card, which means it reaches past the column whenever the column is narrower than the glow.
+
+That bleed is by construction and stays. What made it user-visible is the scroll container it sits in. `[data-conversation-scroll]` declared `overflow-y: auto` and left the other axis at its initial `visible`, and a box that scrolls in one axis computes `visible` to `auto` in the other. Every column narrower than the glow therefore offered a real horizontal scroll range — measured at 24–95px across the widths a laptop actually produces.
+
+## Decision
+
+`.scrollBody` declares `overflow-x: hidden`. The column states that it is a one-axis scroller instead of leaving the second axis to be derived.
+
+Clipping does not change. `overflow-y: auto` had already made the box a scroll container that clips both axes, so the declaration withdraws only the scrollbar and the user gesture; the glow keeps its bleed, its blur radius, and the same painted extent, and the column keeps its vertical scroll. Nothing in the composer chain moves.
+
+## Alternatives considered
+
+**Size the glow to fit the column.** Rejected. The glow's width is what scales its `stdDeviation="50"` blur with the input card (figma 313:14109); constraining it would make the blur tighten as the column narrows, which is a visual regression to fix a scrollbar.
+
+**Wrap the glow in a clipping box.** Rejected. It adds a box whose only job is to undo an overflow the column already clips, and it leaves the derived `overflow-x: auto` in place for the next element that bleeds — the transcript is full of candidates.
+
+**Rely on the frame's `.centerCol { overflow: hidden }`.** It cannot help. That clip is outside the scroll container, so it hides the glow's overhang at the column border while the container inside it still scrolls to reach it. The reported bar was that container's.
+
+**Assert `scrollWidth === clientWidth` in the test.** Rejected as the signal, because it does not distinguish the states: `hidden` clips the bleed rather than reflowing it away, so the scroll range reads the same on both sides of the fix. Only refusing a user gesture differs, which is what the scenario measures.
+
+## Testing
+
+[apps/web/tests/conversation-column-overflow.e2e.ts](../../../../apps/web/tests/conversation-column-overflow.e2e.ts) sweeps viewport widths bracketing the glow and, at each stop, wheels horizontally over the column and reads `scrollLeft`. The committed golden records the relation per stop; the widest stop is the control where the glow does not bleed at all.
+
+Two guards keep the scenario honest. The vacuity guard asserts the glow still reaches past the column at the narrow stops, so the claim cannot pass by the symptom having disappeared for an unrelated reason. The mutation control forces `overflow-x: auto` back on in the page and shows the same gesture, at the same timing, carrying the column to its positive scroll boundary; the test measures that boundary directly because a stable scrollbar gutter can leave some overflow on the negative side of the scroll origin. Without the control, a `scrollLeft` of 0 could equally mean the wheel never arrived.
+
+## Consequences
+
+The conversation column no longer offers a horizontal scrollbar at any width, and decorative bleed in the composer chain is now clipped rather than exposed as scroll range. The cost is that genuinely wide content under this column is clipped instead of reachable by scrolling: any such surface owns its own scroller, as the markdown code block and the trajectory table already do.
@@ -0,0 +1,37 @@
+# Agent Note：会话列只在一个轴上滚动
+
+状态：已实现
+
+[English](2026-08-04-conversation-column-one-axis-scroll.md) | 中文
+
+## 问题
+
+当中间列被拉窄——无论是拖窗口还是拖侧边栏——hero 态的整条会话列下方就会出现一条横向滚动条。溢出的元素是 hero 的装饰性背景椭圆：`.heroGlow` 的宽度取 hero 盒子的 `1051/776`，好让它的模糊在 userSpace 中随输入卡片一同缩放；这也意味着只要列比它窄，它就会伸出列外。
+
+这处外溢是设计使然，保持不变。真正让它对用户可见的是它所处的滚动容器。`[data-conversation-scroll]` 只声明了 `overflow-y: auto`，另一个轴留在初始值 `visible`；而一个在某一轴上滚动的盒子，会把另一轴的 `visible` 计算为 `auto`。于是每一条比该椭圆窄的列都真的给出了一段横向滚动范围——在笔记本实际会产生的几档宽度上，实测为 24–95px。
+
+## 决定
+
+`.scrollBody` 声明 `overflow-x: hidden`。这条列明确声明自己是单轴滚动容器，而不是把第二个轴交给推导。
+
+裁剪行为不变。`overflow-y: auto` 早已使该盒子成为在两个轴上都裁剪的滚动容器，因此这条声明收回的只是滚动条和用户手势；椭圆保留它的外溢、模糊半径和同样的绘制范围，列也保留纵向滚动。输入区那条链路上没有任何东西移动。
+
+## 曾考虑的替代方案
+
+**把椭圆缩到列内。** 否决。椭圆的宽度正是让它 `stdDeviation="50"` 的模糊随输入卡片缩放的依据（figma 313:14109）；约束宽度会使列越窄模糊越紧，等于为修一条滚动条而制造一处视觉回归。
+
+**给椭圆套一层裁剪盒。** 否决。这层盒子唯一的职责是抵消列本就会裁剪的溢出，而推导出的 `overflow-x: auto` 仍然留在原处，等着下一个外溢的元素——会话流里这样的候选者不少。
+
+**依赖外框的 `.centerCol { overflow: hidden }`。** 它帮不上忙。那处裁剪在滚动容器之外，只能在列边界处遮住椭圆探出的部分，而里面的容器照样可以滚过去够到它。用户报告的那条滚动条属于内层容器。
+
+**在测试里断言 `scrollWidth === clientWidth`。** 作为判据被否决，因为它区分不出两种状态：`hidden` 裁剪外溢，而不是把它重排掉，所以修复前后读到的滚动范围一样。唯一有差别的是拒绝用户手势，这正是该场景所测量的。
+
+## 测试
+
+[apps/web/tests/conversation-column-overflow.e2e.ts](../../../../apps/web/tests/conversation-column-overflow.e2e.ts) 扫过一组把椭圆宽度夹在中间的视口宽度，在每一档上向列横向滚轮并读取 `scrollLeft`。提交的 golden 逐档记录该关系；最宽的一档是椭圆根本不外溢的对照。
+
+两道防线保证该场景不流于形式。空断言防线断言窄档上椭圆确实仍伸出列外，使这项主张不可能因为症状出于无关原因消失而通过。变异对照则在页面内把 `overflow-x: auto` 强制改回，证明同一手势在同一时序下能把列带到正向滚动边界。测试直接测量该边界，因为稳定的滚动条槽可能让部分外溢处于滚动原点的负向。没有这项对照，`scrollLeft` 读到 0 同样可以解释为滚轮根本没送达。
+
+## 后果
+
+会话列在任何宽度下都不再给出横向滚动条，输入区链路上的装饰性外溢从暴露为滚动范围改为被裁剪。代价是这条列下真正过宽的内容会被裁掉而非可滚动够到：这类界面各自拥有自己的滚动容器，markdown 代码块和轨迹表格已经如此。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md
+2026-08-05-turn-tail-actions-require-a-completed-turn.md: 689d50bb86c830d6e428239f112568f00d74c9b8
+2026-08-05-turn-tail-actions-require-a-completed-turn.zh.md: 2cc426bbb82acb8f57d491b0f068e89771699357
@@ -0,0 +1,31 @@
+# Agent Note: Turn-tail IconActions require a completed turn
+
+Status: implemented
+
+English | [中文](2026-08-05-turn-tail-actions-require-a-completed-turn.zh.md)
+
+## Problem
+
+Assistant IconActions were derived from the finalized transcript alone: the last content-text assistant of each turn owned the row. That quantity is stable only after the turn closes. While a turn is still producing steps, the narration a model writes before a tool call *is* the last content assistant so far, so it took the row for as long as the tool ran and then lost it to the next step's text. Readers saw copy, branch, and a clock appear under an intermediate sentence, shift the flow by one 28px row, and disappear. The row was also incoherent in that state: its branch control was already disabled through `turnEnds`, and its `Ran for` label was already withheld through `turnTimings`, so only copy worked.
+
+The [message chrome decision](../feature/2026-07-29-web-message-icon-actions-and-clock.md) always claimed mid-turn narration stays chrome-free; the derivation never carried a completion signal to make that true.
+
+## Decision
+
+`assistantActionsSeqs` takes `ConversationSnapshot.turnEnds` and grants the row only within a turn that has a `turn/end` in the window. Ownership inside a completed turn is unchanged: its last content-text assistant. A turn still producing steps grants nothing, so its narration never mounts the row, and the seat appears once, under the settled answer, when the turn closes.
+
+This is the same completion fact the branch control and the run-time label already use, so the three parts of one row now agree. Turn completion is read from the durable `turn/end` event rather than inferred from `running`, the streaming partial, or in-flight tool calls, matching the [completed-turn-tail decision](2026-08-02-message-fork-actions-require-completed-turn-tail.md). Every reason kind closes a turn, so an aborted turn's frozen tail keeps its footer, and a crash-orphaned turn receives its `turn/end` from log repair on load.
+
+`hasContentText` moves to `chat-flow.ts` and `AssistantMarkdown` imports it, so the ownership gate and the mount gate cannot drift apart.
+
+## Alternatives considered
+
+**Withhold by naming the open turn from `running` plus the streaming partial or the first in-flight tool call.** This shipped briefly in the original change and was then dropped. It infers completion instead of reading it, needs a special case so a turn accepted before its first step does not strip the previous answer's seat, and is the inference the completed-turn-tail decision rejected for the branch control. `turnEnds` answers the same question per turn with no inference and no special case.
+
+**Leave the row mounted mid-turn and disable its controls.** Rejected: mid-turn narration is not a degraded answer, it is not the answer. Copy would still write an intermediate sentence, and the row would still move to the real tail at turn end.
+
+**Keep the row under every finalized content node permanently.** Rejected again here for the reason the original decision gave: repeating copy, branch, and a clock under every step clutters the flow. It also does not solve the reported problem, since the branch control is only meaningful on the tail.
+
+## Consequences
+
+A running turn carries no message footer below the user bubble that triggered it, while every earlier completed turn keeps its own; the seat appears once when `turn/end` lands, which adds one 28px row under the settled answer at that moment. A turn whose `turn/end` is outside the loaded window grants nothing, which cannot arise from paging because a turn's end follows its own nodes. `apps/web/tests/turn-tail-actions.e2e.ts` pins both states through the assembled application: a `hang` sidecar on the second model call parks a turn whose first step narrated before calling bash, and the two goldens hold the parked flow and the flow after stopping. Package tests cover the derivation directly and the running-turn render.
@@ -0,0 +1,31 @@
+# Agent Note: 轮次尾部 IconActions 要求轮次已完成
+
+Status: implemented
+
+[English](2026-08-05-turn-tail-actions-require-a-completed-turn.md) | 中文
+
+## 问题
+
+assistant IconActions 此前只从已定稿的 transcript（文本记录）推导：每个轮次中最后一条含内容文本的 assistant 拥有该行。这个量只有在轮次关闭后才稳定。轮次仍在产出步骤时，模型在工具调用前写下的叙述就是当时该轮次的最后一条内容 assistant，于是它在工具执行期间取得该行，等下一步的文本落定又把它交出去。读者会看到复制、分支和时钟出现在一句中间叙述下方，把流程推开一行 28px，然后消失。该行在这个状态下本身也是残缺的：分支控件已经通过 `turnEnds` 判定为禁用，`Ran for` 标签已经通过 `turnTimings` 判定为不显示，只有复制可用。
+
+[消息 chrome 决策](../feature/2026-07-29-web-message-icon-actions-and-clock.md)一直声称轮次中间的叙述不带 chrome，但推导过程从未拿到能让这句话成立的完成信号。
+
+## 决策
+
+`assistantActionsSeqs` 接收 `ConversationSnapshot.turnEnds`，只在事件窗口中存在该轮次 `turn/end` 时才授予该行。已完成轮次内部的归属不变，仍是其最后一条含内容文本的 assistant。仍在产出步骤的轮次不授予任何座位，因此其叙述不会挂载该行；轮次关闭时，座位在已定稿答案下方一次性出现。
+
+这与分支控件和运行时长标签使用的完成事实相同，因此同一行的三个部分现在口径一致。轮次是否完成读自持久的 `turn/end` 事件，而不是从 `running`、流式 partial 或在途工具调用推断，与[已完成轮次尾部决策](2026-08-02-message-fork-actions-require-completed-turn-tail.md)一致。任何 reason 类别都会关闭轮次，因此已中止轮次冻结的尾部保留其操作栏，而崩溃遗留的开放轮次会在加载时由日志修复补上 `turn/end`。
+
+`hasContentText` 移入 `chat-flow.ts`，由 `AssistantMarkdown` 导入，使归属门控与挂载门控无法各自漂移。
+
+## 考虑过的替代方案
+
+**用 `running` 加流式 partial 或第一个在途工具调用指认开放轮次，据此扣留。** 这一做法曾在最初的变更中短暂存在，随后被删除。它推断完成状态而不是读取完成状态，还需要一个特例，避免轮次已被接受但尚未产出第一步时把上一条回答的座位取走；这正是已完成轮次尾部决策为分支控件否决过的推断。`turnEnds` 按轮次回答同一个问题，不需要推断，也不需要特例。
+
+**轮次进行中保留该行，只把控件置为不可用。** 不予采纳：轮次中间的叙述不是一个降级的答案，它根本不是答案。复制仍然会写入一句中间文本，该行在轮次结束时仍然要移动到真正的尾部。
+
+**让每个已定稿的内容节点长期保留该行。** 在此重新否决，理由与最初的决策相同：在每一步下重复复制、分支和时钟会打乱流程。它也解决不了本次报告的问题，因为分支控件只有落在尾部才有意义。
+
+## 后果
+
+运行中的轮次在触发它的用户气泡之下不再有任何消息操作栏，而此前每个已完成轮次仍保留各自的座位；座位在 `turn/end` 到达时一次性出现，此刻已定稿答案下方会多出一行 28px。`turn/end` 落在加载窗口之外的轮次不授予座位，而翻页不会造成这种情况，因为一个轮次的结束事件排在它自己的节点之后。`apps/web/tests/turn-tail-actions.e2e.ts` 通过组装后的应用钉住两种状态：`hang` sidecar 作用在第二次模型调用上，把一个首步先叙述再调用 bash 的轮次挂住，两份 golden 分别记录挂起中的流程和停止之后的流程。包级测试直接覆盖该推导以及运行中轮次的渲染结果。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-06-provider-credential-lifecycle.md
+2026-08-06-provider-credential-lifecycle.md: ce45207e7ac7224f44e34945e36ba85db0971f09
+2026-08-06-provider-credential-lifecycle.zh.md: c476417517b8ed72036344a13720a8ba378775e6
@@ -0,0 +1,27 @@
+# Agent Note: Recoverable provider credential lifecycle
+
+Status: implemented
+
+English | [中文](2026-08-06-provider-credential-lifecycle.zh.md)
+
+## Problem
+
+The Models editor spans independent settings and credential RPC domains. It previously committed provider settings before storing the API key but kept the revision and original subtree from when the card opened. If the credential write failed, retry replayed the already-committed settings mutation with a stale revision and produced a conflict, leaving the user unable to complete the second stage from the same card. A blank pi-ai key also wrote the derived `apiKeyEnv` without a credential, which prevented pi-ai from using provider-native discovery. At deletion, the inverse leak remained: the profile disappeared but its page-stored key stayed in `.env` and silently became active when the provider was added again. Generic row actions and confirmation copy did not identify which provider would be changed.
+
+## Decision
+
+Provider save remains a two-stage settings-then-credentials operation over the existing wire domains, but the card treats the successful settings response as a commit checkpoint. It replaces its comparison subtree and expected revision with the returned redacted descriptor before attempting `credentials.set`; if that second stage fails, the draft key and card stay visible, and retry produces no settings ops and repeats only the credential write. Genuine concurrent changes before the first settings commit still fail with `settings-conflict`. Typed keys are trimmed at the UI and direct DeepSeek resolver boundaries, and pi-ai records a derived reference only when the normalized key is non-empty; saving a blank key materializes an empty, reference-free profile for provider-native discovery.
+
+Deletion removes a credential only when the joined row identifies the exact `<ROUTE>_API_KEY` reference derived by this page and reports it configured and writable. It unsets that credential before the user-layer profile so a settings-stage failure leaves the row and its frozen target visible for retry; both unsets are idempotent. Custom references, environment credentials, missing credentials, and targets the join cannot identify are retained. The row's accessible Edit/Delete names and the destructive dialog title, description, and final action all use the same stable `Display Name (route-id)` identity, collapsing to the route id when both strings match. The dialog states whether the stored key will be removed and owns operation failures instead of replacing the whole page with a load-error banner. Rows expose API-key state only from the value-free join: a confirmed literal or referenced credential is a green solid dot, a confirmed missing named reference is a red solid dot, and reference-free provider-native authentication or unavailable credential enrichment has no dot. Each dot has accessible copy and a tooltip, while successful Apply uses the same provider identity in a local status message and never echoes secret material.
+
+## Alternatives considered
+
+**Add a cross-domain transaction RPC.** Settings and credentials have separate owning services and durable stores; introducing a new host transaction would broaden the public wire and still require compensation for provider-specific persistence failures. The UI checkpoint makes the current ordered stages recoverable without adding a fourth configuration contract.
+
+**Delete every credential reference named by a removed profile.** A custom reference can be shared, externally managed, or intentionally survive profile churn. Exact equality with this page's derived target plus configured+writable state is the narrow evidence available to the page; anything weaker risks deleting a credential it does not own.
+
+**Remove settings first and compensate by recreating the profile.** The browser holds only a redacted subtree and cannot faithfully reconstruct stored literal secrets or concurrent edits. Credential-first deletion leaves the authoritative profile visible on partial failure and makes retry safe without synthesizing configuration.
+
+## Consequences
+
+The Models page can recover from either second-stage failure without reload, secret disclosure, or a false concurrency conflict, and blank-key pi-ai profiles preserve Bedrock, Vertex, and other provider-native authentication. Confirmed status is visible without turning route liveness, native authentication, or a failed credential lookup into a false error, and a successful replacement remains observable even when the row stays green. Deleting a page-managed provider no longer leaves a reusable local key, while ambiguous credentials deliberately remain for manual management. Save and delete are still not atomic across durable stores: a process crash can stop between stages, but their order and idempotence leave an observable, retryable state. Component tests pin partial-success retries, empty-key native auth, normalized literals, status visibility, target identity, cleanup ownership, and credential/settings rejection ordering; the keyless browser scenario pins bilingual accessible copy and verifies that confirmed deletion removes both `settings.yaml` profile and `.env` credential. This decision refines the Models apply semantics recorded in the [web configuration plane note](../architecture/2026-07-30-web-config-plane.md).
@@ -0,0 +1,27 @@
+# Agent Note: 可恢复的提供方凭据生命周期
+
+Status: implemented
+
+[English](2026-08-06-provider-credential-lifecycle.md) | 中文
+
+## 问题
+
+Models 编辑器横跨互相独立的 settings 与凭据 RPC 领域。之前它先提交提供方 settings，再存储 API 密钥，却一直保留卡片打开时的 revision 和原始子树。如果凭据写入失败，重试会用陈旧 revision 重放已提交的 settings 变更，并产生冲突，导致用户无法从同一张卡片完成第二个阶段。空的 pi-ai 密钥还会写入派生的 `apiKeyEnv`，却不写入凭据，从而阻止 pi-ai 使用提供方原生凭据发现。删除时则存在相反的残留问题：profile 消失了，页面存储的密钥却保留在 `.env` 中，并在重新添加提供方时静默地恢复作用。笼统的行操作与确认文案也没有标明要更改哪个提供方。
+
+## 决策
+
+提供方保存仍在现有 wire 领域上按先 settings、后凭据的两阶段顺序执行，但卡片会把成功的 settings 响应视为提交检查点。它会在尝试 `credentials.set` 之前，用返回的脱敏 descriptor 替换比较基准子树与预期 revision；如果第二阶段失败，草稿密钥与卡片会继续显示，重试不会产生 settings op，只会再次写入凭据。首次 settings 提交之前发生的真实并发变更仍会以 `settings-conflict` 失败。UI 与 DeepSeek 直连 resolver 边界均会去除所输密钥的首尾空白，且只有标准化密钥非空时，pi-ai 才会记录派生引用；留空密钥会具化一个空的、不带引用的 profile，以便使用提供方原生凭据发现。
+
+只有当联接所得的行识别出该页面派生的精确 `<ROUTE>_API_KEY` 引用，并将其报告为已配置且可写时，删除操作才会清除该凭据。它会先取消设置该凭据，再取消设置用户层 profile；如果 settings 阶段失败，该行及其已冻结的目标仍可见，便于重试。两项 unset 都具备幂等性。自定义引用、环境凭据、缺失的凭据，以及联接无法识别目标的凭据均会保留。行的无障碍 Edit/Delete 名称以及破坏性对话框的标题、说明和最终操作都使用同一个稳定的 `Display Name (route-id)` 标识；当两个字符串相同时，标识会简化为路由 id。对话框会说明是否一并删除已存密钥，并在自身内显示操作失败，而不是用加载错误横幅替换整个页面。行只根据不含值的联接结果展示 API 密钥状态：确认已配置的字面密钥或引用凭据显示为绿色实心点，确认缺失的具名引用显示为红色实心点，无引用的提供方原生认证或无法取得凭据补充信息时则不显示状态点。每个状态点都有无障碍文案和工具提示；「应用」成功后的本地状态消息会使用同一个提供方标识，且绝不回显任何机密内容。
+
+## 曾考虑的替代方案
+
+**添加跨领域事务 RPC。**settings 与凭据分属不同的主管服务与持久存储；引入新的 Host 事务会扩大公开 wire 面，而且仍需要补偿提供方特定的持久化失败。UI 检查点让当前的有序阶段变得可恢复，无需添加第四项配置契约。
+
+**删除被移除 profile 所指定的每一个凭据引用。**自定义引用可能被共享、由外部管理，或有意在 profile 反复增删时存留。与该页面派生目标精确相等，再加上已配置且可写的状态，是页面所能获得的最小范围证据；比这更弱的判定都有可能删除不属于它的凭据。
+
+**先删除 settings，再重建 profile 以作补偿。**浏览器只持有脱敏后的子树，无法忠实重建已存的字面机密或并发编辑。先删除凭据可以让权威 profile 在部分失败时仍然可见，并且无需合成配置就能安全重试。
+
+## 后果
+
+Models 页可以从任一第二阶段失败中恢复，无需重新加载，也不会泄露机密或产生虚假的并发冲突；空密钥的 pi-ai profile 会保留 Bedrock、Vertex 与其他提供方原生认证。已确认的状态清晰可见，同时不会把路由存活状态、原生认证或凭据查询失败误报为错误；即使该行继续显示绿色，密钥替换成功也仍然可观察。删除由页面管理的提供方不再遗留可重用的本地密钥，而存在歧义的凭据会有意保留，交由手动管理。保存与删除在跨持久存储时仍非原子操作：进程可能在两个阶段之间崩溃，但它们的顺序与幂等性会留下可观察、可重试的状态。组件测试固定了部分成功后的重试、空密钥原生认证、标准化字面值、状态可见性、目标标识、清理所有权，以及凭据／settings 拒绝顺序；无密钥的浏览器场景固定了双语无障碍文案，并验证确认删除会同时清除 `settings.yaml` profile 与 `.env` 凭据。此决策细化了 [web 配置平面 note](../architecture/2026-07-30-web-config-plane.md) 中记录的 Models 应用语义。
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-06-15-code-mode.md
-2026-06-15-code-mode.md: b6a24ecd9700e32912b8112b59cbd8b6ab131eb5
-2026-06-15-code-mode.zh.md: a00a43ece1e581190de6096be8138df25a23f07f
+2026-06-15-code-mode.md: 99bbed3edab32512f88ece9694d6519a1f89c2dd
+2026-06-15-code-mode.zh.md: ca1bbe9ed3e412186763d1ed4fca9ed06669d4c3
@@ -6,7 +6,7 @@ English | [中文](2026-06-15-code-mode.zh.md)

 ## Problem

-In the registry's native presentation, the agent loop advertises every visible capability as a JSON-schema function definition. `ToolRegistry` contributes its schemas to the system-prompt assembly, the assembly's `tools` land on the wire (and in the logged request header), the model invokes one `tool-call` block per step, and the loop dispatches each call through `ctx.tools.execute()` **sequentially** (parallel tool execution is an explicit open TODO in `dsh-tools` and [docs/architecture.md](../../../../docs/architecture.md)), with **every** intermediate `tool-result` re-entering the model's context on the next request.
+In the registry's native presentation, the agent loop advertises every visible capability as a JSON-schema function definition. `ToolRegistry` contributes its schemas to the system-prompt assembly, the assembly's `tools` land on the wire (and in the logged request header), the model invokes one `tool-call` block per step, and at the time of this note the loop dispatched each call through `ctx.tools.execute()` **sequentially** (parallel tool execution was an open TODO then; bounded parallel dispatch has since shipped — the [parallel tool-call note](2026-07-10-parallel-tool-call-execution.md), the rolling pool in [docs/architecture.md](../../../../docs/architecture.md)) — with **every** intermediate `tool-result` re-entering the model's context on the next request.

 For multi-step tool work this is token-heavy and serial. The model cannot compose tools — loop over a result set, branch on an intermediate value, fan out, post-process — without a full model round-trip per call, and each round-trip drags the entire intermediate result back into context whether the model needs it or not.

@@ -32,7 +32,7 @@ This note owns Code Mode's presentation, composition, isolation, and settlement

 **Interaction with `toolOrder`, stated up front:** a configured `systemPrompt.toolOrder` naming native capabilities rejects every assembly under `mode: 'code'`, because those names are outside that mode's wire-validation universe. This is correct behavior, not a bug: a deployment using Code Mode updates its order config or drops it.

-**SDK prompt section.** In `'code'` and `'both'`, the lazy `tools:sdk` section in the tool-guidance order band renders TypeScript declarations plus fixed usage instructions for the scope's visible capabilities. It shares lookup and execution visibility, excludes `run_code`, and sorts tools lexicographically for byte-stable output.
+**SDK prompt section.** In `'code'` and `'both'`, the lazy `tools:sdk` section in the tool-guidance order band renders the loaded runtime's language declarations plus fixed usage instructions for the scope's visible capabilities (TypeScript by default; the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md) added Python and the `ctx.codeRuntime.language` renderer table). It shares lookup and execution visibility, excludes `run_code`, and sorts tools lexicographically for byte-stable output.

 **Assembly ownership.** `run_code` and `tools:sdk` enter the trusted `system-prompt/assemble` waterfall as normal assembly inputs. A scoped `tools:sdk` section may shadow the global default before dispatch, and a listener may remove or replace either contribution. The waterfall's returned assembly is final, so whoever changes these inputs owns preserving a viable Code Mode protocol when the deployment expects Code Mode to remain usable; no restoration pass overrides deliberate composition.

@@ -48,7 +48,7 @@ Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentat

 **Sub-call contexts are deferred through the parent.** Injecting inside `run_code` would break parent call/result adjacency, so `ToolRunContext.deferContext()` collects every sub-result `additionalContexts` entry in dispatch order. The registry carries that array even when the program later throws, and the loop appends each entry only after the outer result and every sibling result in the step. An outer post-execute block discards tool-deferred entries and exposes only contexts explicitly attached by the blocking decision.

-**Concurrency is serialized.** Each run owns a dispatch queue, so even `Promise.all` executes tool calls in submission order. Settlement abandons queued calls that have not started. Parallelism requires per-tool concurrency-safety metadata.
+**Concurrency is bounded, not serialized.** Each run owns a dispatch queue that starts calls strictly in submission order and classifies each one through `registry.executionMode`, the same fail-closed `isConcurrencySafe` contract the native loop uses. Consecutive parallel-classified calls overlap up to `maxParallelSubCalls` (default 10; `1` restores serial dispatch); an exclusive call drains the pool and runs alone. Settlement abandons queued calls that have not started. This note shipped the serialized placeholder; the [live-parallel Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) owns the scheduler that replaced it.

 **Presentation.** `run_code`'s render intent is decided here per the [render-intent Agent Note](../architecture/2026-07-02-tool-render-intent-union.md): `presentCall` creates a `generic` card with `kind: 'execute'`, the program text as its title, and the same program text as `rawInput`; `run_code` intentionally declares no `presentResult`, so the TUI and host/client runtime (Web) complete that card through their generic raw-content fallback using the final durable `tool/result.content`, including captured logs plus the returned value, failure, or post-policy spill preview. This is not a `terminal` card: that card's semantics are "a shell command in a working directory", which a program is not. See the [result-card completeness note](../../archived/bug-fix/2026-07-20-code-mode-result-card-completeness.md).

@@ -64,7 +64,7 @@ Each sub-dispatch appends a log-only `tool/code-dispatch-start` event at pool en
 - `CodeBindingNamespace = { global: string; functions: Record<string, (args: unknown) => Promise<CodeJsonValue>>; errorClass?: { name: string; memberNameProperty: string } }` — the runtime exposes each namespace as a global object of async functions inside the program; the optional descriptor asks the runtime to inject a real program-visible rejection class without teaching the seam consumer-specific names. `CodeJsonValue` is this dependency-light seam's structural lossless-JSON type, so binding arguments and resolutions cross the implementation's serialization boundary whole.
 - `CodeRunResult = { value?: CodeJsonValue; logs: string[]; error?: CodeRunFailure }` — program execution outcomes resolve as the `error` field. `run()` may reject only for caller/seam misuse (for example a duplicate binding namespace); consumers still contain a non-conforming backend rejection at their own error boundary.
 - `CodeRunFailure = { kind: 'exception' | 'timeout' | 'abort' | 'worker-exit' | 'invalid-output' | 'output-limit'; message: string }` — orthogonal outcomes reported independently per [defensive patterns](../../../../docs/defensive-patterns.md); a timed-out run is not an exception, an abort is not a timeout, a lossy completion is not an overflow, and a substrate exit is none of them.
- Two readonly backend descriptors, informational not gating: `language` (what the program must be written in — `'typescript'` for the shipped backend; a Python backend would say so, and pair with its own SDK generator on the presentation side) and `isolation` (`'worker-thread'` for the shipped backend; `'process'`, `'container'`, … for future ones). `dsh-tools` requires `language === 'typescript'` in the MVP — its codegen emits TS — and fails the assembly loudly otherwise, the same misconfiguration idiom as `toolOrder` violations (as when `mode` is non-native with no `ctx.codeRuntime` loaded at all).
+- Two readonly backend descriptors, informational not gating: `language` (what the program must be written in — `'typescript'` for the first backend; a Python backend says `'python'` and pairs with its own SDK generator on the presentation side) and `isolation` (`'worker-thread'` for the shipped backend; `'process'`, `'container'`, … for future ones). `dsh-tools` accepts any `language` with a registered SDK renderer and `run_code` flavor (TypeScript and Python ship; see the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md)) and fails the assembly loudly otherwise, the same misconfiguration idiom as `toolOrder` violations (as when `mode` is non-native with no `ctx.codeRuntime` loaded at all).

 Requests contain every runtime input; implementations own validated timeout and cap defaults. The registry looks up the optional runtime only when Code Mode is assembled, so native mode does not depend on one. Missing or language-incompatible runtimes fail loudly. Alternate substrates or languages can replace the implementation behind the same seam, paired with the appropriate SDK generator.

@@ -85,11 +85,11 @@ The worker runtime provides containment, not a security boundary: model code can

 ### What the model sees

-The SDK instructs the model to write an async erasable-TypeScript body, call tools through `await tools.name(args)`, catch rejected tool calls when needed, and return or log only the output that should re-enter context. Calls remain sequential even under `Promise.all`. The declaration prefix can be as large as native schemas, especially in `'both'`, but remains stable for provider caching.
+The SDK instructs the model to write an async body in the loaded runtime's language (an erasable-TypeScript body by default; a Python `async` body under a Python runtime — see the [language-dispatch note](2026-07-31-code-mode-language-dispatch.md)), call tools through `await tools.name(args)`, catch rejected tool calls when needed, and return or log only the output that should re-enter context. Both flavors state the same contract in their own primitive: independent read-only calls MAY overlap under `Promise.all` (TypeScript) or `asyncio.gather` (Python), mutating calls run alone in submission order, and dependent work sequences with `await`. The declaration prefix can be as large as native schemas, especially in `'both'`, but remains stable for provider caching.

 ## Consequences

-Deployments switching to `'code'` must update any native-only `toolOrder`. Assembly listeners own the integrity of any rewritten protocol surface. Sub-dispatch remains serialized, while per-call contexts retain their source, envelope, and metadata through the outer result.
+Deployments switching to `'code'` must update any native-only `toolOrder`. Assembly listeners own the integrity of any rewritten protocol surface. Sub-dispatch starts in submission order under a bounded overlap pool, while per-call contexts retain their source, envelope, and metadata through the outer result.

 ## Testing

@@ -106,7 +106,7 @@ Deployments switching to `'code'` must update any native-only `toolOrder`. Assem

 **Result elision / summarization over native tool-calling.** Addresses only the context-bloat half of the problem: trimming old `tool-result`s is cheap to add as a logged surface replacement under reconstructable requests, but still pays one model round-trip per call and cannot express loops, branches, or joins. Complementary, not competing; it can layer under Code Mode for residual native calls.

-**Parallel native dispatch in the loop.** The other answer to round-trip cost; still valid future work (the open TODO), still blocked on concurrency-safety metadata, and still no composition — it parallelizes calls the model already decided on in one step. Code Mode's serialized-queue decision keeps the two compatible: when the metadata lands, both native parallel dispatch and per-tool binding parallelism unlock together.
+**Parallel native dispatch in the loop.** The other answer to round-trip cost at decision time; it was blocked on concurrency-safety metadata and offers no composition either way — it parallelizes calls the model already decided on in one step. Code Mode's queue decision kept the two compatible, and that is how it played out: the metadata landed as `isConcurrencySafe` (the [parallel tool-call note](2026-07-10-parallel-tool-call-execution.md)), and native rolling-pool dispatch and per-tool binding parallelism unlocked on the same classifier.

 **Always-exclusive (Cloudflare-faithful, no mode).** Rejected for this SDK's primary consumer: a coding agent's bread-and-butter single calls (`bash`, `read`, `edit`) are already ideal as native calls, and forcing every edit through a program taxes the common case. The mode config keeps the faithful form (`'code'`) one line away without imposing it.

@@ -128,6 +128,6 @@ Deployments switching to `'code'` must update any native-only `toolOrder`. Assem

 **Large lossless JSON values can exhaust memory.** Tool bindings snapshot lossless JSON before dispatch and return canonical JSON resolutions whole. The runtime validates both sides of the worker port and applies no per-binding byte cap; structured-clone cost and process or worker memory are the practical bounds. The combined outer-output ledger for logs, the completion value, and a failure diagnostic is the only byte-capped boundary.

-**Serialized-only sub-dispatch.** `Promise.all` gains no wall-clock parallelism yet, only fewer round-trips; models may over-expect. The instructions state it; lifting it is tied to the same concurrency-safety metadata the native parallel-dispatch TODO needs.
+**Sub-dispatch overlap is bounded by tool safety claims, not by the caller.** A program's `Promise.all` or `asyncio.gather` buys wall-clock parallelism only across calls the tool itself classifies concurrency-safe; a run of exclusive calls still costs its round-trips in sequence, and models may over-expect. Both flavors' SDK instructions state the real contract. This note shipped the serialized placeholder that made the risk absolute; the [live-parallel Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) owns the scheduler and its overlap cap.

 **Budget metering reads the event loop, not a flag.** Busy-time polling (`eventLoopUtilization()`) is coarser than an exact CPU meter — a budget expires up to one poll interval late — and its correctness claim ("a pending dispatch cannot pause it") is load-bearing against a hostile program. Both sides are unit-tested (hot loop with a pending decoy dispatch dies at `computeMs`; idle-on-slow-binding survives to `maxWallMs`), and the poll interval is an internal constant, not config — nothing a deployment could mis-tune into a bypass. `maxWallMs` is config, and it reaches `setTimeout`, which clamps a delay above `MAX_TIMER_DELAY_MS` (2^31-1 ms) to 1 ms; a positivity check alone therefore accepts a 25-day ceiling that expires on the first tick and times out every run. The worker runtime range-checks the field at load for that reason. `computeMs` needs no upper bound because it is compared against measured utilization instead of being handed to a timer.
@@ -6,7 +6,7 @@ Status: implemented

 ## 问题

-在注册表的原生呈现方式下，agent loop（智能体循环）将每个可见能力以 JSON Schema 函数定义的形式通告给模型。`ToolRegistry` 将其 schema 贡献给系统提示词组装，组装结果中的 `tools` 落到协议格式（wire format）上（也记录在请求头日志中），模型每步调用一个 `tool-call` 块，循环通过 `ctx.tools.execute()` **逐个**分发每次调用（并行工具执行是 `dsh-tools` 和 [docs/architecture.md](../../../../docs/architecture.md) 中明确标注的 open TODO），且**每一个**中间 `tool-result` 都会在下一次请求时重新进入模型上下文。
+在注册表的原生呈现方式下，agent loop（智能体循环）将每个可见能力以 JSON Schema 函数定义的形式通告给模型。`ToolRegistry` 将其 schema 贡献给系统提示词组装，组装结果中的 `tools` 落到协议格式（wire format）上（也记录在请求头日志中），模型每步调用一个 `tool-call` 块，而在本 note 写作时，循环通过 `ctx.tools.execute()` **逐个**分发每次调用（并行工具执行当时还是 open TODO；此后有界的并行分发已经交付——见[并行工具调用 note](2026-07-10-parallel-tool-call-execution.md)，以及 [docs/architecture.md](../../../../docs/architecture.md) 中的 rolling pool）——且**每一个**中间 `tool-result` 都会在下一次请求时重新进入模型上下文。

 对于多步工具操作，这种方式 token 开销大且串行。模型无法组合工具——遍历结果集、根据中间值分支、扇出、后处理——每次调用都需要一次完整的模型往返，而每次往返都会把完整的中间结果拖回上下文，不管模型是否需要。

@@ -32,7 +32,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一

 **与 `toolOrder` 的交互，预先说明：** 如果配置的 `systemPrompt.toolOrder` 引用了原生能力名称，在 `mode: 'code'` 下会拒绝所有组装，因为那些名称不在该模式的协议校验范围内。这是正确行为而非 bug：使用 Code Mode 的部署需要更新其 order 配置或移除它。

-**SDK 提示词段。** 在 `'code'` 和 `'both'` 下，tool-guidance order band 中的惰性 `tools:sdk` 段为当前 scope 的可见能力渲染 TypeScript 声明加固定的使用说明。它共享查找和执行可见性，排除 `run_code`，并按字典序排列工具以获得字节稳定的输出。
+**SDK 提示词段。** 在 `'code'` 和 `'both'` 下，tool-guidance order band 中的惰性 `tools:sdk` 段为当前 scope 的可见能力渲染所加载运行时语言的声明加固定的使用说明（默认 TypeScript；[语言分发 note](2026-07-31-code-mode-language-dispatch.md) 加入了 Python 与按 `ctx.codeRuntime.language` 选择的渲染器表）。它共享查找和执行可见性，排除 `run_code`，并按字典序排列工具以获得字节稳定的输出。

 **组装所有权。** `run_code` 和 `tools:sdk` 作为正常的组装输入进入受信任的 `system-prompt/assemble` waterfall。一个 scoped 的 `tools:sdk` 段可以在分发前遮蔽全局默认值，监听器也可以移除或替换任一贡献。waterfall 返回的组装结果是最终的，因此修改这些输入的人有责任在部署期望 Code Mode 可用时保持协议面的完整性；没有恢复 pass 会覆盖有意的组合。

@@ -48,7 +48,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一

 **子调用上下文通过父调用延后。** 在 `run_code` 内部注入会破坏父调用/结果的相邻性，因此 `ToolRunContext.deferContext()` 按分发顺序收集每个子结果的 `additionalContexts` 条目。即使程序后来抛出异常，注册表仍携带该数组；循环只在外层结果与步骤中所有兄弟结果之后追加每个条目。外层 post-execute 阻止会丢弃工具延后的条目，只暴露阻止 decision 显式附加的上下文。

-**并发被序列化。** 每次 run 拥有一个分发队列，因此即使 `Promise.all` 也按提交顺序执行工具调用。结算时放弃尚未开始的排队调用。并行化需要每个工具的并发安全元数据。
+**并发是有界的，而非被序列化。** 每次 run 拥有一个分发队列，严格按提交顺序启动调用，并通过 `registry.executionMode` 对每个调用分类——与原生循环所用的 fail-closed `isConcurrencySafe` 契约相同。连续的 parallel 类调用最多重叠 `maxParallelSubCalls` 个（默认 10；设为 `1` 恢复串行分发）；exclusive 类调用会排空池并单独运行。结算时放弃尚未开始的排队调用。本 note 交付的是被序列化的占位实现；取代它的调度器由[实时并行 Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) 负责。

 **呈现。** `run_code` 的 render intent 按[呈现意图 Agent Note](../architecture/2026-07-02-tool-render-intent-union.md)在此决定：`presentCall` 创建一个 `generic` 卡片，`kind: 'execute'`，以程序文本作为标题，并将同一程序文本作为 `rawInput`；`run_code` 有意不声明 `presentResult`，因此 TUI 和宿主/客户端运行时（Web）会通过通用原始内容回退机制，使用最终持久化的 `tool/result.content` 补全该卡片，其中包括捕获的日志，以及返回值、失败信息或 post-policy 输出落盘预览。这不是 `terminal` 卡片：该卡片的语义是「工作目录中的 shell 命令」，程序不是。参见[结果卡片完整性说明](../../archived/bug-fix/2026-07-20-code-mode-result-card-completeness.md)。

@@ -64,7 +64,7 @@ Cloudflare 的 [Code Mode](https://blog.cloudflare.com/code-mode/) 提出了一
 - `CodeBindingNamespace = { global: string; functions: Record<string, (args: unknown) => Promise<CodeJsonValue>>; errorClass?: { name: string; memberNameProperty: string } }`——运行时将每个命名空间作为程序内部的全局异步函数对象暴露；可选描述符要求运行时注入真正的、程序可见的 reject 类，而无需让 seam 获知消费方专用名称。`CodeJsonValue` 是这个低依赖 seam 的结构化无损 JSON 类型，因此绑定参数与返回值可以完整跨越实现的序列化边界。
 - `CodeRunResult = { value?: CodeJsonValue; logs: string[]; error?: CodeRunFailure }`——程序执行失败时，执行 promise 仍会 fulfill，并通过 `error` 字段返回失败结果。只有调用方/seam 误用（例如重复的绑定命名空间）时，`run()` 才会 reject；消费方仍在自己的错误边界处理不合规后端的拒绝。
 - `CodeRunFailure = { kind: 'exception' | 'timeout' | 'abort' | 'worker-exit' | 'invalid-output' | 'output-limit'; message: string }`——按[防御性模式](../../../../docs/defensive-patterns.md)独立报告的正交结果；超时的 run 不是异常，abort 不是超时，有损完成值不是溢出，基底退出也与上述情况相互独立。
- 两个只读的后端描述符，仅供信息参考而非门禁判定：`language`（程序必须使用的语言——交付的后端为 `'typescript'`；Python 后端会声明自己，并在呈现侧配对自己的 SDK 生成器）和 `isolation`（交付的后端为 `'worker-thread'`；未来可为 `'process'`、`'container'` 等）。`dsh-tools` 在 MVP 中要求 `language === 'typescript'`——其代码生成输出 TS——否则组装会大声失败，与 `toolOrder` 违规时的配置错误惯用法相同（如 `mode` 为非 native 但根本没有加载 `ctx.codeRuntime`）。
+- 两个只读的后端描述符，仅供信息参考而非门禁判定：`language`（程序必须使用的语言——首个后端为 `'typescript'`；Python 后端声明 `'python'`，并在呈现侧配对自己的 SDK 生成器）和 `isolation`（交付的后端为 `'worker-thread'`；未来可为 `'process'`、`'container'` 等）。`dsh-tools` 接受任何注册了 SDK 渲染器与 `run_code` flavor 的 `language`（TypeScript 与 Python 已交付；见[语言分发 note](2026-07-31-code-mode-language-dispatch.md)），否则组装会大声失败，与 `toolOrder` 违规时的配置错误惯用法相同（如 `mode` 为非 native 但根本没有加载 `ctx.codeRuntime`）。

 请求包含所有运行时输入；实现方拥有经校验的超时和上限默认值。注册表仅在组装 Code Mode 时查找可选的运行时，因此 native 模式不依赖它。缺失或语言不兼容的运行时会大声失败。替代基底或语言可以在同一 seam 背后替换实现，配对相应的 SDK 生成器。

@@ -85,11 +85,11 @@ worker 运行时只能约束程序的运行，而不构成安全边界：模型

 ### 模型看到的内容

-SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `await tools.name(args)` 调用工具，在需要时捕获被拒绝的工具调用，并仅 return 或 log 应重新进入上下文的输出。即使在 `Promise.all` 下调用仍保持顺序。声明前缀可能与原生 schema 一样大，尤其在 `'both'` 下，但对提供方缓存保持稳定。
+SDK 指示模型编写一个所加载运行时语言的异步函数体（默认可擦除 TypeScript；Python 运行时下为 Python `async` 函数体——见[语言分发 note](2026-07-31-code-mode-language-dispatch.md)），通过 `await tools.name(args)` 调用工具，在需要时捕获被拒绝的工具调用，并仅 return 或 log 应重新进入上下文的输出。两种 flavor 用各自的原语陈述同一契约：相互独立的只读调用可以在 `Promise.all`（TypeScript）或 `asyncio.gather`（Python）下重叠，有副作用的调用按提交顺序单独运行，有依赖的工作用 `await` 排序。声明前缀可能与原生 schema 一样大，尤其在 `'both'` 下，但对提供方缓存保持稳定。

 ## 后果

-切换到 `'code'` 的部署必须更新任何仅限 native 的 `toolOrder`。组装监听器有责任维护任何被重写的协议面的完整性。子分发保持序列化，而每次调用的上下文会通过外层结果保留其 source、信封与元数据。
+切换到 `'code'` 的部署必须更新任何仅限 native 的 `toolOrder`。组装监听器有责任维护任何被重写的协议面的完整性。子分发在有界的重叠池下按提交顺序启动，而每次调用的上下文会通过外层结果保留其 source、信封与元数据。

 ## 测试

@@ -106,7 +106,7 @@ SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `aw

 **在原生工具调用上做结果省略/摘要。** 仅解决问题中上下文膨胀这一半：裁剪旧 `tool-result` 作为可重建请求下的日志化表面替换成本低，但仍需每次调用一次模型往返，且无法表达循环、分支或汇合。互补而非竞争；它可以在 Code Mode 下为残余的原生调用分层。

-**循环中的并行原生分发。** 往返成本的另一个答案；仍是有效的未来工作（open TODO），仍被并发安全元数据阻塞，且仍无组合能力——它并行化的是模型在一步中已经决定的调用。Code Mode 的序列化队列决策保持两者兼容：当元数据就绪时，原生并行分发和每工具绑定并行化一起解锁。
+**循环中的并行原生分发。** 决策当时对往返成本的另一个答案；它被并发安全元数据阻塞，且无论如何都不提供组合能力——它并行化的是模型在一步中已经决定的调用。Code Mode 的队列决策保持了两者兼容，后续也正是这样落地的：元数据以 `isConcurrencySafe` 的形式就绪（见[并行工具调用 note](2026-07-10-parallel-tool-call-execution.md)），原生 rolling-pool 分发与每工具绑定并行化基于同一个分类器一起解锁。

 **始终排他（忠于 Cloudflare，无模式）。** 否决，因为本 SDK 的主要消费方是编码 agent：其日常的单次调用（`bash`、`read`、`edit`）作为原生调用已经是最优的，强制每次编辑都通过程序会给常见场景增加负担。mode 配置让忠实形式（`'code'`）只需一行配置即可启用，而不强加于人。

@@ -128,6 +128,6 @@ SDK 指示模型编写一个异步的可擦除 TypeScript 函数体，通过 `aw

 **大型无损 JSON 值可能耗尽内存。** 工具绑定会在分发前对无损 JSON 创建快照，并完整返回规范 JSON 返回值。运行时会校验 worker 端口两侧，但不对单次绑定设置字节数上限；结构化克隆成本以及进程或 worker 内存构成实际边界。只有包含日志、完成值和失败诊断的组合外层输出账本受字节数上限约束。

-**仅序列化的子分发。** `Promise.all` 尚未获得挂钟并行性，仅减少往返次数；模型可能过度期望。说明中已声明；解除此限制与原生并行分发 TODO 所需的并发安全元数据绑定。
+**子分发的重叠由工具自身的安全声明限定，而非由调用方决定。** 程序里的 `Promise.all` 或 `asyncio.gather` 只在工具自己分类为并发安全的调用之间换来挂钟并行性；一串 exclusive 调用仍要按顺序付出各自的往返开销，模型可能过度期望。两种 flavor 的 SDK 说明都陈述了真实契约。本 note 交付的是使该风险绝对化的序列化占位实现；调度器及其重叠上限由[实时并行 Agent Note](2026-07-26-code-mode-live-parallel-dispatch.md) 负责。

 **预算计量读取事件循环，而非 flag。** 忙碌时间轮询（`eventLoopUtilization()`）比精确 CPU 计量更粗糙——预算到期最多延迟一个轮询间隔——且其正确性声明（「pending 的分发不能暂停它」）是抵御恶意程序的关键。两种情况均有单元测试（带 pending 诱饵分发的热循环会在耗尽 `computeMs` 预算时终止；等待慢速绑定的空闲程序则会持续运行至 `maxWallMs`），轮询间隔是内部常量而非配置——部署无法将其误调为绕过手段。`maxWallMs` 是配置项，且会传入 `setTimeout`，后者会把超过 `MAX_TIMER_DELAY_MS`（2^31-1 ms）的延迟夹到 1 ms；因此仅有正数校验会放行一个 25 天的上限，它在第一个 tick 就到期，使每次运行都超时。worker 运行时正因如此在加载时对该字段做范围校验。`computeMs` 不需要上界，因为它对照的是实测占用率，而不是交给定时器。
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-06-29-todo-write-tool.md
-2026-06-29-todo-write-tool.md: 288932f641a37c13ea6beeb069ac360c4a8447c1
-2026-06-29-todo-write-tool.zh.md: 2eced2e1670c20726989137d441d1c78df289641
+2026-06-29-todo-write-tool.md: c4cf64b7876bd8b80df80fe6fc27005715f96b5e
+2026-06-29-todo-write-tool.zh.md: 1f797c5517df8affd66addecf2a8db43c1da3332
@@ -6,7 +6,7 @@ English | [中文](2026-06-29-todo-write-tool.zh.md)

 ## Problem

-The harness gives the model bash and subagent tools but no way to record a structured task list. A todo list serves two co-equal purposes: it steers the model to plan multi-step work and keep the active task unambiguous (at most one active, exactly one while work remains), and it gives an interactive host a live progress checklist. Every reference coding agent surveyed (claude-code, opencode, codex, oh-my-pi, pi) ships some form of this; the harness had nothing.
+The harness gives the model bash and subagent tools but no way to record a structured task list. A todo list serves two co-equal purposes: it steers the model to plan multi-step work and keep the active work unambiguous, and it gives an interactive host a live progress checklist. Every reference coding agent surveyed (claude-code, opencode, codex, oh-my-pi, pi) ships some form of this; the harness had nothing.

 ## Decision

@@ -34,7 +34,7 @@ Each list belongs to the calling agent session, and non-agent calls are rejected

 ### Validation: the cheap middle

-The schema enforces type/required/enum. Beyond that, `execute` rejects empty or duplicate `content` and more than one `in_progress` task. claude-code leaves single-in-progress to the prompt; oh-my-pi enforces it in code. We take the middle: enforce the cheap invariants that make a plan *coherent* (no blank tasks, no dupes, at most one active), but leave ordering and the discipline of keeping the list current to the model via the tool description. A rejected write returns an `isError` result so the model self-corrects.
+The schema enforces type/required/enum. Beyond that, `execute` rejects empty or duplicate `content` and, when `allowParallelInProgress` is `false`, more than one active task. Ordering and keeping the list current remain model disciplines expressed in the tool description. A rejected write returns an `isError` result so the model self-corrects. The required deployment policy and the durable invariant's independence from it are owned by the [parallel in-progress Agent Note](2026-07-26-todo-parallel-in-progress.md).

 ## Why no cordis-catalog entry / no `@mode`

@@ -6,7 +6,7 @@ Status: implemented

 ## 问题

-harness 为模型提供了 bash 和 subagent 工具，却没有办法记录结构化的任务列表。todo 列表有两个同等重要的用途：引导模型规划多步骤工作并保持当前活跃任务明确（最多一个活跃，有剩余工作时恰好一个）；同时为交互式宿主提供实时进度清单。调研的所有参考编码 agent（智能体），包括 claude-code、opencode、codex、oh-my-pi 和 pi，都提供了某种形式的此功能；本 harness 此前没有。
+harness 为模型提供了 bash 和 subagent 工具，却没有办法记录结构化的任务列表。todo 列表有两个同等重要的用途：引导模型规划多步骤工作并保持当前活跃任务明确；同时为交互式宿主提供实时进度清单。调研的所有参考编码 agent（智能体），包括 claude-code、opencode、codex、oh-my-pi 和 pi，都提供了某种形式的此功能；本 harness 此前没有。

 ## 决策

@@ -34,7 +34,7 @@ claude-code V1 的条目是 `{ content, status, activeForm }`；后来（V2）

 ### 校验：低成本的中间路线

-schema 强制 type/required/enum。在此之上，`execute` 拒绝为空或重复的 `content`，以及超过一个 `in_progress` 任务。claude-code 将单一 in_progress 交给提示词约束；oh-my-pi 在代码中强制。我们取中间路线：强制执行使计划*连贯*的低成本不变式（无空任务、无重复、最多一个活跃），但将排序和保持列表最新的纪律通过工具描述交给模型。被拒绝的写入返回 `isError` 结果，使模型自行修正。
+schema 强制 type/required/enum。在此之上，`execute` 拒绝为空或重复的 `content`，并在 `allowParallelInProgress` 为 `false` 时拒绝超过一个活跃任务。排序和保持列表最新仍通过工具描述交给模型。被拒绝的写入返回 `isError` 结果，使模型自行修正。必填的部署策略及持久日志不变式独立于该策略这一约定，由[并行 in-progress Agent Note](2026-07-26-todo-parallel-in-progress.md) 负责。

 ## 为何没有 cordis-catalog 条目 / 没有 `@mode`

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-22-durable-subagent-catalog-and-list-agents.md
-2026-07-22-durable-subagent-catalog-and-list-agents.md: 0dd7eebac74689004014248c7178dba540ef4662
-2026-07-22-durable-subagent-catalog-and-list-agents.zh.md: 33b0296cf9914d1975fb1dc84564b498a09bd511
+2026-07-22-durable-subagent-catalog-and-list-agents.md: b96d6e1dd36c58af67c8e93e62515672790ad009
+2026-07-22-durable-subagent-catalog-and-list-agents.zh.md: 856bac615db84bfe2898ec0838094c6bc29f77b2
@@ -12,6 +12,8 @@ Enumeration must cross-check immutable session lineage, descriptor validity, and

 ## Decision

+**Superseded read path.** [Subagent list identity via the projection unit](../architecture/2026-08-06-subagent-list-identity-projection.md) replaces this note's enumeration and per-child read design: `listChildren` now merges the live session store with optional session persistence directly and serves each child's mode/label from the registered `subagent` projection unit — no session-query dependency, no list-time descriptor scan — and that note owns the current listing semantics, including the diagnostic mapping. This note remains the authority for descriptor persistence, the mode-discriminated descriptor as durable identity, direct-parent authorization, and the model-facing `list_agents` projection; the trace-based read mechanics below are decision context, not current behavior.
+
 Parent-to-child enumeration is a service capability with consumer-specific projections. `SubagentService.listChildren(parentSessionId: SessionId)` ([subagent/src/index.ts](../../../../packages/subagent/subagent/src/index.ts)) does the following:

 - use `ctx.sessionQuery.traceSession(parentSessionId)` to obtain the parent's direct live-preferred child sessions;
@@ -33,7 +35,7 @@ Session lineage is broader than subagent identity: an ordinary `ctx.sessions.for

 The published logical record is also the activity source: `SessionRecord.live` means `running`, while `live: false, persisted: true` means `inactive`. Activity comes directly from the trace and causes no additional child-log load. `inactive` encodes neither successful completion nor resumability: it may describe settled one-shot history or a continuable child for which `send_message` can materialize another Activation. Conversely, `running` says only that the session is live: a live continuable Agent outside the continuation manager's matching Activation still appears as `running`, but `send_message` rejects it as an ownership conflict. A child is not visible before its session is published, and no process-local Activation entry is added as a second candidate or activity source. Listing is a snapshot that may race publication, disposal, or a later message; `send_message` remains the authoritative delivery-time operation.

-The subagent service keeps `sessionQuery` optional so start and follow-up remain available without it. Its public `listChildren(parentSessionId: SessionId)` method resolves the optional service and dynamically loads the optional session-query runtime only when called; ordinary subagent imports, start, and follow-up therefore do not evaluate that package. Listing belongs directly to `SubagentService`: it interprets the query's lineage, events, and live state without resolving the Activation-based continuation manager or consulting Agent registrations, Activations, or providers, so a deployment with sessions, `subagents`, and `sessionQuery` can list even when `agents` is absent. The method throws `SubagentError` with stable code `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` before loading the runtime or doing query work when the query service is absent. `@deepseek-ai/dsh-tool-subagent-control` exports separately loadable tool plugins: the `send_message` adapter requires only `subagents`, while the `list_agents` adapter requires both `subagents` and `sessionQuery` at load. A deployment may therefore use `send_message` without installing or loading session query; the list-tool fiber remains inactive until the required service is available, while another direct service consumer receives the same explicit call-time contract.
+The subagent service keeps `sessionQuery` optional so start and follow-up remain available without it. Its public `listChildren(parentSessionId: SessionId)` method resolves the optional service and dynamically loads the optional session-query runtime only when called; ordinary subagent imports, start, and follow-up therefore do not evaluate that package. Listing belongs directly to `SubagentService`: it interprets the query's lineage, events, and live state without resolving the Activation-based continuation manager or consulting Agent registrations, Activations, or providers, so a deployment with sessions, `subagents`, and `sessionQuery` can list even when `agents` is absent. The method throws `SubagentError` with stable code `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` before loading the runtime or doing query work when the query service is absent. `@deepseek-ai/dsh-tool-subagent-control` exports separately loadable tool plugins: the `send_message` adapter requires only `subagents`, while the `list_agents` adapter requires both `subagents` and `sessionQuery` at load. A deployment may therefore use `send_message` without installing or loading session query; the list-tool fiber remains inactive until the required service is available, while another direct service consumer receives the same explicit call-time contract. This dependency posture — the optional `sessionQuery`, its error code, and the list tool's load requirement — is part of the superseded read path: the current codes (`SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`, `SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE`) and the narrowed load requirement live in the [superseding note](../architecture/2026-08-06-subagent-list-identity-projection.md).

 `listChildren(parentSessionId, signal?)` forwards the caller's signal to `traceSession()` and the conditional exact `readEvent()` operation. `listEvents()` has no cancellation parameter, so the listing path checks the signal before and after that await and after each candidate settles. If any query operation rejects after the signal aborts, the service normalizes the result to `SubagentError` with stable code `CANCELLED`; a backend abort error or a diagnostic-mapped query error cannot escape or become a successful partial listing.

@@ -91,9 +93,10 @@ The first version has no child deletion operation. If later product behavior del
 ## Testing

 - `packages/subagent/subagent/tests/service.spec.ts` pins descriptor v2 parsing for both modes and proves an unlabeled raw start resolves a one-shot descriptor before provider dispatch. `packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts` proves the local driver appends that descriptor inside the initial turn, returns the published id when cancellation lands in the factory-to-run handoff, and keeps result and handle-disposal failures on separate channels. Delegation-tool tests pin propagation of their existing display description and preserve independent result and disposal diagnostics.
- `packages/subagent/subagent/tests/list-children.spec.ts` pins a query-only composition with sessions, `subagents`, and `sessionQuery` but no `agents`, then drives the full real stack (agent loop, JSONL persistence, spawn/fork providers, the subagent service, and a concrete session-query service) keylessly: one-shot and continuable children from one real trace; a persisted (restart-shaped) parent target; `createdAt`-then-id ordering with authored ties; ordinary-fork and fork-seed ancestor-descriptor exclusion without diagnostics; live `running` vs persisted `inactive`; duplicate-descriptor, malformed-payload, invalid-surface, mismatched-header, and changed-read-target corruption diagnostics that leave healthy siblings visible; unsupported-version and per-child unavailable diagnostics; provider absence without child omission; compacted/uncompacted twins listing identically; grandchild exclusion; trace-phase failure failing the whole call while candidate-phase failures isolate to one child; configuration/window and unrecognized failures propagating as operation failures; forwarded trace/exact-read cancellation with stable `CANCELLED` normalization; and the `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` no-service contract. `packages/subagent/subagent/tests/optional-session-query.spec.ts` rejects eager evaluation of the optional runtime while importing the ordinary subagent surface.
- `packages/subagent/tool-subagent-control/tests/list-agents.spec.ts` pins the `list_agents` schema (no parameters), the continuable-only projection that omits a healthy one-shot sibling while preserving diagnostics, the fixed child/diagnostic/empty text forms, an end-to-end settled-child listing with its durable label, forwarding of the tool cancellation signal, the no-agent rejection, load-time `sessionQuery` injection, and HMR disposal.
- The keyless ACP snapshot scenario `subagent-list-agents` (examples/acp-agent) fences its second parent turn on a snapshot-only `subagent/end` marker, then executes `list_agents` for real against the subagent service, session query, and JSONL persistence, rendering `<id> [complete] — <label>`.
+- `packages/subagent/subagent/tests/list-children.spec.ts` pins the current read path against a real composition of the session store, JSONL persistence, spawn/fork providers, the subagent service, and the projection registry — no query service — keylessly: live-only listing without persistence; loud `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE` and `SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE` even with zero children; the three-rung ladder (a live child never inspected, a cold child inspected exactly once, and the cache-hit, absent-key, absent-service, and poisoned-row second-rung cases); last-wins over multiple descriptors; malformed payloads and unknown versions diagnosed as `corrupt`; a failed cold inspection as one `unavailable` diagnostic retried on the next listing; a fork seed's ancestor descriptor listed under that identity; foreign-unit fold failures contained per child as `corrupt` on both the live and cold paths; `createdAt`-then-id ordering without ordinary forks; provider absence without child omission; compacted/uncompacted twins listing identically; a persisted-listing failure failing the whole enumeration; cancellation normalized to stable `CANCELLED`; and typed stable error codes. A companion spec (retired together with the query-backed read path) rejected eager evaluation of the optional session-query runtime while importing the ordinary subagent surface.
+- `packages/subagent/tool-subagent-control/tests/list-agents.spec.ts` pins the `list_agents` schema (no parameters), the continuable-only projection that omits a healthy one-shot sibling while preserving diagnostics, the fixed child/diagnostic/empty text forms, an end-to-end settled-child listing with its durable label, forwarding of the tool cancellation signal, the no-agent rejection, the narrowed load requirement without `sessionQuery`, and HMR disposal.
+- The keyless ACP snapshot scenario `subagent-list-agents` (examples/acp-agent) fences its second parent turn on a snapshot-only `subagent/end` marker, then executes `list_agents` for real against the subagent service, the projection registry, and JSONL persistence, rendering `<id> [complete] — <label>`.
+- The keyless snapshot scenario `subagent-diagnostic` (examples/headless-agent) pins the current listing's model-visible diagnostic classification, including a descriptor-less settled child surfacing as a `corrupt` diagnostic.
 - The keyless ACP snapshot scenario `subagent-published-run-failure` publishes a real one-shot child, injects independent run-result and handle-disposal failures, and preserves both diagnostics in the parent tool result.

 ## Consequences
@@ -12,6 +12,8 @@ Status: implemented

 ## 决策

+**列表读路径已被取代。**[subagent 列表经投影单元读取身份](../architecture/2026-08-06-subagent-list-identity-projection.md)取代了本记录的枚举与逐 child 读取设计:`listChildren` 现在直接合并存活会话存储与可选的会话持久化,并从注册的 `subagent` projection unit 读取每个 child 的 mode/label——不依赖会话查询,也不在列表时扫描描述符;当前的列表语义(含 diagnostic 映射)以该记录为准。本记录仍是描述符持久化、以 mode 判别的描述符作为持久身份、直接 parent 鉴权与面向模型的 `list_agents` 投影的权威;下文基于追踪的读取机制是决策背景,不再是当前行为。
+
 parent 到 child 的枚举是一项带消费方专用投影的服务功能。`SubagentService.listChildren(parentSessionId: SessionId)`（[subagent/src/index.ts](../../../../packages/subagent/subagent/src/index.ts)）执行以下操作：

 - 使用 `ctx.sessionQuery.traceSession(parentSessionId)` 获取 parent 的直接且实时优先的 child 会话；
@@ -33,7 +35,7 @@ parent 到 child 的枚举是一项带消费方专用投影的服务功能。`Su

 已发布的逻辑记录同时也是活动状态来源：`SessionRecord.live` 表示 `running`，而 `live: false, persisted: true` 表示 `inactive`。活动状态直接来自追踪结果，不会导致额外加载 child 日志。`inactive` 既不表示执行成功，也不表示可恢复：它可能表示已结算的一次性历史，也可能表示 `send_message` 可以为其物化另一次 Activation 的可继续 child。反过来，`running` 只表示会话存活：位于继续执行管理器对应 Activation 之外的存活可继续 Agent 仍会显示为 `running`，但 `send_message` 会将其作为所有权冲突拒绝。child 会话发布前不可见，也不会添加进程内 Activation 条目作为第二个候选来源或活动状态来源。列表查询是一份快照，可能与发布、dispose 或后续消息发生竞态；`send_message` 仍是消息送达时的权威操作。

-subagent 服务将 `sessionQuery` 保持为可选依赖，因此没有该服务时仍可执行 start 和 follow-up。其公开的 `listChildren(parentSessionId: SessionId)` 方法只在被调用时才会解析这个可选服务，并动态加载可选的会话查询运行时；因此，普通 subagent 导入、start 和 follow-up 都不会触发该包求值。列表查询直接由 `SubagentService` 负责：它解释查询返回的谱系、事件和存活状态，无需解析基于 Activation 的继续执行管理器，也不会查询 Agent 注册信息、Activation 或提供方；因此，仅包含会话、`subagents` 和 `sessionQuery` 的部署即使缺少 `agents` 也能执行列表查询。如果查询服务缺失，该方法会在加载运行时或执行查询工作前抛出 `SubagentError`，并携带稳定错误码 `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE`。`@deepseek-ai/dsh-tool-subagent-control` 导出可分别加载的工具插件：`send_message` 适配器只要求 `subagents`，而 `list_agents` 适配器在加载时同时要求 `subagents` 和 `sessionQuery`。因此，部署可以在既不安装也不加载会话查询的情况下使用 `send_message`；列表工具 fiber 会在必需服务可用前保持未激活状态，而其他直接服务消费方会收到同一项明确的调用时契约。
+subagent 服务将 `sessionQuery` 保持为可选依赖，因此没有该服务时仍可执行 start 和 follow-up。其公开的 `listChildren(parentSessionId: SessionId)` 方法只在被调用时才会解析这个可选服务，并动态加载可选的会话查询运行时；因此，普通 subagent 导入、start 和 follow-up 都不会触发该包求值。列表查询直接由 `SubagentService` 负责：它解释查询返回的谱系、事件和存活状态，无需解析基于 Activation 的继续执行管理器，也不会查询 Agent 注册信息、Activation 或提供方；因此，仅包含会话、`subagents` 和 `sessionQuery` 的部署即使缺少 `agents` 也能执行列表查询。如果查询服务缺失，该方法会在加载运行时或执行查询工作前抛出 `SubagentError`，并携带稳定错误码 `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE`。`@deepseek-ai/dsh-tool-subagent-control` 导出可分别加载的工具插件：`send_message` 适配器只要求 `subagents`，而 `list_agents` 适配器在加载时同时要求 `subagents` 和 `sessionQuery`。因此，部署可以在既不安装也不加载会话查询的情况下使用 `send_message`；列表工具 fiber 会在必需服务可用前保持未激活状态，而其他直接服务消费方会收到同一项明确的调用时契约。这一段的依赖姿态——可选 `sessionQuery`、其错误码与列表工具的加载要求——同属被取代的读路径：现行错误码（`SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE`、`SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE`）与收窄后的加载要求以[取代记录](../architecture/2026-08-06-subagent-list-identity-projection.md)为准。

 `listChildren(parentSessionId, signal?)` 会把调用方的取消信号转发给 `traceSession()` 和条件性精确 `readEvent()` 操作。`listEvents()` 不接受取消参数，因此列表查询路径会在等待该操作的前后，以及每个候选处理完成后检查信号。如果取消信号触发后有查询操作以拒绝结算，服务会将结果归一化为 `SubagentError`，并携带稳定错误码 `CANCELLED`；后端中止错误或可映射为 diagnostic 的查询错误均不会逃逸，也不会使调用以成功的部分列表返回。

@@ -91,9 +93,10 @@ diagnostic 是瞬时查询结果，不属于会话事件或目录状态。推导
 ## 测试

 - `packages/subagent/subagent/tests/service.spec.ts` 固定两种模式下的描述符 v2 解析，并证明无标签的底层启动会在分发给提供方之前解析出一次性描述符。`packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts` 证明本地驱动会在初始轮次内追加该描述符，在取消落入工厂到 run 的交接窗口时返回已发布 id，并让结果与句柄释放失败保留在独立通道中。委派工具测试固定其现有显示说明的传递，并保留相互独立的结果与 dispose diagnostic。
- `packages/subagent/subagent/tests/list-children.spec.ts` 先固定一个只有会话、`subagents` 和 `sessionQuery` 而没有 `agents` 的纯查询组合，再以无密钥方式驱动完整真实栈（agent loop、JSONL 持久化、spawn/fork 提供方、subagent 服务，以及一个具体的会话查询服务）：来自同一真实追踪的一次性与可继续 child；只存在于持久化存储中（重启形态）的 parent 目标；带有人工构造并列项的按 `createdAt` 再按 id 排序；排除普通 fork 和 fork seed 中祖先描述符且不产生 diagnostic；存活 `running` 与持久化 `inactive` 的对比；重复描述符、载荷格式错误、无效 surface、header 不匹配和读取目标已变化的损坏 diagnostic 均不隐藏健康的 sibling；不受支持版本与逐 child unavailable diagnostic；提供方缺失时不排除 child；压缩与未压缩的孪生 child 列表结果一致；排除孙代会话；追踪阶段失败导致整次调用失败而候选阶段失败只隔离到单个 child；配置／窗口错误和无法识别的失败作为操作失败向上传播；转发 trace／精确读取取消并稳定归一化为 `CANCELLED`；以及 `SUBAGENT_CONTROL_SESSION_QUERY_UNAVAILABLE` 缺服务契约。`packages/subagent/subagent/tests/optional-session-query.spec.ts` 会在导入普通 subagent surface 时拒绝对可选运行时的 eager 求值。
- `packages/subagent/tool-subagent-control/tests/list-agents.spec.ts` 固定 `list_agents` 的 schema（无参数）、只保留可继续 child 且排除健康的一次性 sibling、同时保留 diagnostic 的投影、child／diagnostic／空结果的固定文本形式、带持久化 label 的已结束 child 端到端列表、工具取消信号的转发、无调用 agent 时的拒绝、加载时的 `sessionQuery` 注入，以及 HMR dispose。
- 无密钥 ACP 快照场景 `subagent-list-agents`（examples/acp-agent）使用仅限快照的 `subagent/end` 标记为第二个 parent 轮次设置边界，随后针对 subagent 服务、会话查询和 JSONL 持久化真实执行 `list_agents`，渲染 `<id> [complete] — <label>`。
+- `packages/subagent/subagent/tests/list-children.spec.ts` 针对由会话存储、JSONL 持久化、spawn/fork 提供方、subagent 服务与投影注册表构成的真实组合——不含查询服务——以无密钥方式钉住现行读取路径：无持久化时的仅存活列表；零 children 也响亮报 `SUBAGENT_CONTROL_PROJECTIONS_UNAVAILABLE` 与 `SUBAGENT_CONTROL_SESSION_STORE_UNAVAILABLE`；三级阶梯（存活 child 从不检查、冷 child 恰好检查一次，以及缓存命中、key 缺席、服务缺席、行中毒四个第二级用例）；多描述符 last-wins 取末者；载荷格式错误与未知版本诊断为 `corrupt`；冷检查失败成一条 `unavailable` diagnostic 并在下次列表重试；fork seed 中的祖先描述符按该身份列出；外部 unit 折叠失败在存活与冷两条路径上按 child 收纳为 `corrupt`；按 `createdAt` 再按 id 排序且不列普通 fork；提供方缺失时不排除 child；压缩与未压缩的孪生 child 列表结果一致；持久化列表失败使整次枚举失败；取消稳定归一化为 `CANCELLED`；以及带类型的稳定错误码。一个伴随规格(已随查询式读取路径一起退役)曾在导入普通 subagent surface 时拒绝对可选 session-query 运行时的 eager 求值。
+- `packages/subagent/tool-subagent-control/tests/list-agents.spec.ts` 固定 `list_agents` 的 schema（无参数）、只保留可继续 child 且排除健康的一次性 sibling、同时保留 diagnostic 的投影、child／diagnostic／空结果的固定文本形式、带持久化 label 的已结束 child 端到端列表、工具取消信号的转发、无调用 agent 时的拒绝、收窄后的加载要求（不再注入 `sessionQuery`），以及 HMR dispose。
+- 无密钥 ACP 快照场景 `subagent-list-agents`（examples/acp-agent）使用仅限快照的 `subagent/end` 标记为第二个 parent 轮次设置边界，随后针对 subagent 服务、投影注册表和 JSONL 持久化真实执行 `list_agents`，渲染 `<id> [complete] — <label>`。
+- 无密钥快照场景 `subagent-diagnostic`（examples/headless-agent）钉住现行列表的模型可见诊断分类，包括无描述符的定局 child 以 `corrupt` diagnostic 出现。
 - 无密钥 ACP 快照场景 `subagent-published-run-failure` 会发布一个真实的一次性 child，注入相互独立的 run result 与 handle dispose 失败，并在 parent 工具结果中保留两项 diagnostic。

 ## 影响
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-23-web-todo-display.md
-2026-07-23-web-todo-display.md: d5939c0fa6ab83a61f1932622c4b6a150ccaded7
-2026-07-23-web-todo-display.zh.md: b1ecf679efe81016e00c5c1221c04730b3ce98bb
+2026-07-23-web-todo-display.md: 9e6e4914cd24d1db9271baa3d3fb6fdc56a9ac65
+2026-07-23-web-todo-display.zh.md: 5a5ac554b37c255a7d8c1ce821ebeb1b3f9f091f
@@ -18,11 +18,11 @@ Consume `todo/write` as a Session side effect, not a surface node, and render it

 ### TodoPanel: the durable list as a persistent strip

-The panel mounts through the `conversation.input.dock` slot (a plain registrant plugin, `todoDockEntry`, using `ctx.slots.inject` with no `ConversationService` edge, `order: -1` above the queue rows), hidden while empty, collapsible to a header of title + `"<done>/<total> tasks · <n> in progress"` (no in-progress content hint when collapsed). Status glyphs are the figma todo set (green check ring / blue fading ring / dashed pending ring) on a tip-surface card (`--dsw-specific-tip`, 14px radius, `width: calc(100% - 88px)` / `max-width: 776px` centered; InputBar top pad 6px is the gap to the composer card). It reads `snapshot.todos` via the standard-kit `useSession` hook the dock entry receives — no store, no service, no ctx. The inner component stays props-complete and framework-free; the dock adapter is a one-line wrapper.
+The panel mounts through the `conversation.input.dock` slot (a plain registrant plugin, `todoDockEntry`, using `ctx.slots.inject` with no `ConversationService` edge, `order: 0` above the queue rows), hidden while empty, collapsible to a header of title + `·`-joined per-status counts (localized, `1 completed · 2 in progress · 1 pending`, zero-count segments omitted; no in-progress content hint when collapsed). Status glyphs are the figma todo set (green check ring / blue fading ring / dashed pending ring) on a tip-surface card (`--dsw-specific-tip`, 14px radius, `width: calc(100% - 88px)` / `max-width: 776px` centered; InputBar top pad 6px is the gap to the composer card). It reads the host-computed `todos` projection via the standard-kit `useProjection` hook the dock entry receives — no store, no service, no ctx. The inner component stays props-complete and framework-free; the dock adapter is a one-line wrapper.

 ### TodoRow: the per-call row through the keyed toolview slot

-The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`, mounted from `apply`) that registers into the keyed `conversation.chat.toolview` slot through `ctx.slots.inject`, the same declaration-lifetime posture as the bash sample but a product registration. The summary derives from call args (`N/M done · active item`); unparseable args fall back to the generic row summary; clicking opens the details column with the raw args. No `ToolEventView` is added for todo — presentation is client-owned, and the durable list renders from the session event, not the tool card.
+The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`, mounted from `apply`) that registers into the keyed `conversation.chat.toolview` slot through `ctx.slots.inject`, the same declaration-lifetime posture as the bash sample but a product registration. The summary derives from call args (`N/M done · first active item`, with a `+<n>` count of the other active ones in `ToolRow`'s non-shrinking `summarySuffix` slot); unparseable args fall back to the generic row summary; clicking opens the details column with the raw args. No `ToolEventView` is added for todo — presentation is client-owned, and the durable list renders from the session event, not the tool card.

 ## Alternatives considered

@@ -33,4 +33,4 @@ The dedicated `todo_write` chat row is a plain registrant plugin (`todoToolview`

 ## Consequences

-Replay correctness is owned by one code path: any future change to window rebuild keeps todos consistent for free, and the fixture (fx-alpha turn 65) plus the assembled keyless snapshot (`apps/web/tests/todo-display.snapshot.ts`) pin the full chain (row summary and state, dock panel content, collapse round-trip) over the built client graph. `todos` is a required `ConversationSnapshot` field, so scripted fakes in specs must carry it. The TUI panel shares the same turn-scoped lifetime (the automation-only ACP bridge deliberately omits todo presentation); the web surfaces render the same event, adding one wire field and no new event type. That field is how cold-load reconstruction stays host-backed: the tail history page carries `todos` — the full-log standing plan (latest `todo/write` with no later `turn/start`), computed independently of the page window (the same backscan posture the view pairing uses) — so a reopened session restores the plan when it still stands and the last write precedes the window; that value survives an older-page prepend, is overwritten by any later write, clears on a later `turn/start`, and resets to empty when a tail response carries no projection.
+Replay correctness is owned by one code path: any future change to window rebuild keeps todos consistent for free, and the fixture (fx-alpha turn 71) plus `packages/client/ui-conversation/tests/todo-panel.spec.tsx` pin the full chain (row summary and state, dock panel content, collapse round-trip). `todos` is a required `ConversationSnapshot` field, so scripted fakes in specs must carry it. The automation-only ACP bridge deliberately omits todo presentation; the web surfaces render the same event, adding one wire field and no new event type. That field is how cold-load reconstruction stays host-backed: the tail history page carries `todos` — the full-log standing plan (latest `todo/write` with no later `turn/start`), computed independently of the page window (the same backscan posture the view pairing uses) — so a reopened session restores the plan when it still stands and the last write precedes the window; that value survives an older-page prepend, is overwritten by any later write, clears on a later `turn/start`, and resets to empty when a tail response carries no projection.
@@ -18,11 +18,11 @@ Status: implemented

 ### TodoPanel：持久化列表作为一条常驻横条

-面板经 `conversation.input.dock` slot 挂载（普通注册者插件 `todoDockEntry` 使用 `ctx.slots.inject`，不依赖 `ConversationService`，`order: -1` 排在队列条上方），空列表时隐藏，可折叠为标题加 `"<已完成>/<总数> tasks · <n> in progress"` 的表头（折叠态不再附带进行中条目正文）。状态图标为 figma todo 套件（绿色勾选环／蓝色渐隐环／虚线未开始环），卡片使用 tip 表面（`--dsw-specific-tip`、14px 圆角、`width: calc(100% - 88px)`／`max-width: 776px` 居中；InputBar 顶部 6px 内边距是到输入卡的间距）。它经 dock entry 收到的标准件 `useSession` hook 读取 `snapshot.todos`——无 store、无 service、无 ctx。内部组件保持 props 完备且框架无关；dock 适配件只是一行包装。
+面板经 `conversation.input.dock` slot 挂载（普通注册者插件 `todoDockEntry` 使用 `ctx.slots.inject`，不依赖 `ConversationService`，`order: 0` 排在队列条上方），空列表时隐藏，可折叠为标题加以 `·` 连接的各状态计数的表头（本地化，形如 `1 已完成 · 2 进行中 · 1 待处理`，计数为零的段落省略；折叠态不再附带进行中条目正文）。状态图标为 figma todo 套件（绿色勾选环／蓝色渐隐环／虚线未开始环），卡片使用 tip 表面（`--dsw-specific-tip`、14px 圆角、`width: calc(100% - 88px)`／`max-width: 776px` 居中；InputBar 顶部 6px 内边距是到输入卡的间距）。它经 dock entry 收到的标准件 `useProjection` hook 读取 host 计算的 `todos` 投影——无 store、无 service、无 ctx。内部组件保持 props 完备且框架无关；dock 适配件只是一行包装。

 ### TodoRow：经 keyed toolview slot 的逐调用行

-专用的 `todo_write` 对话行是一个普通注册者插件（`todoToolview`，由 `apply` 挂载），经 `ctx.slots.inject` 注册进 keyed 的 `conversation.chat.toolview` slot，遵循与 bash 样例相同的声明生命周期，但属产品级注册。摘要由调用 args 推导（`N/M done · active item`）；无法解析的 args 回退到通用行摘要；点击会以原始 args 打开 details 列。todo 不新增任何 `ToolEventView`——呈现归客户端所有，常驻列表从会话事件渲染，而非工具卡。
+专用的 `todo_write` 对话行是一个普通注册者插件（`todoToolview`，由 `apply` 挂载），经 `ctx.slots.inject` 注册进 keyed 的 `conversation.chat.toolview` slot，遵循与 bash 样例相同的声明生命周期，但属产品级注册。摘要由调用 args 推导（`N/M done · first active item`，其余活跃项的 `+<n>` 计数放在 `ToolRow` 的不收缩 `summarySuffix` 位里）；无法解析的 args 回退到通用行摘要；点击会以原始 args 打开 details 列。todo 不新增任何 `ToolEventView`——呈现归客户端所有，常驻列表从会话事件渲染，而非工具卡。

 ## 考虑过的替代方案

@@ -33,4 +33,4 @@ Status: implemented

 ## 后果

-回放正确性由一条代码路径掌管：未来对窗口重建的任何改动都会自然保持 todos 一致；fx-alpha 第 65 轮的 fixture（测试前置数据）加上组装后的无密钥快照（`apps/web/tests/todo-display.snapshot.ts`）在构建后的完整客户端依赖图中固定整条链（行摘要与状态、dock 面板内容、折叠往返）。`todos` 是 `ConversationSnapshot` 的必填字段，所以 spec 里脚本化的 fake 必须带上它。TUI 面板共用同一按轮次界定的生命周期（自动化专用的 ACP 桥接刻意不做 todo 呈现）；Web 各面渲染同一个事件，只新增一个协议字段，不新增事件类型。这个由 host 提供的字段正是冷加载重建的依据：history 尾页附带 `todos`——全量 log 上当前有效的计划（其后没有更晚 `turn/start` 的最近一次 `todo/write`），独立于分页窗口计算（与 view 配对同一种 backscan 姿势）——因此重开会话时若计划仍然有效且最后一次写入落在窗口之前，计划也照常恢复；该值跨往前翻页保留，之后的任何写入照常覆盖，更晚的 `turn/start` 会清空，而尾页响应不带投影时复位为空。
+回放正确性由一条代码路径掌管：未来对窗口重建的任何改动都会自然保持 todos 一致；fx-alpha 第 71 轮的 fixture（测试前置数据）加上 `packages/client/ui-conversation/tests/todo-panel.spec.tsx` 固定整条链（行摘要与状态、dock 面板内容、折叠往返）。`todos` 是 `ConversationSnapshot` 的必填字段，所以 spec 里脚本化的 fake 必须带上它。自动化专用的 ACP 桥接刻意不做 todo 呈现；Web 各面渲染同一个事件，只新增一个协议字段，不新增事件类型。这个由 host 提供的字段正是冷加载重建的依据：history 尾页附带 `todos`——全量 log 上当前有效的计划（其后没有更晚 `turn/start` 的最近一次 `todo/write`），独立于分页窗口计算（与 view 配对同一种 backscan 姿势）——因此重开会话时若计划仍然有效且最后一次写入落在窗口之前，计划也照常恢复；该值跨往前翻页保留，之后的任何写入照常覆盖，更晚的 `turn/start` 会清空，而尾页响应不带投影时复位为空。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-26-todo-parallel-in-progress.md
+2026-07-26-todo-parallel-in-progress.md: 2805ef894050d1b1cffe06fce59a4984d463f8d1
+2026-07-26-todo-parallel-in-progress.zh.md: 16b32daa05b10f24eacde4cec9622b2159cdef09
@@ -0,0 +1,54 @@
+# Agent Note: Allow several `in_progress` todos at once
+
+Status: implemented
+
+English | [中文](2026-07-26-todo-parallel-in-progress.zh.md)
+
+## Problem
+
+The [original `todo_write` design](2026-06-29-todo-write-tool.md) enforced at most one `in_progress` task per list, both in `execute` and in the durable-log invariant. That invariant assumes sequential work, but the harness runs genuinely parallel work — concurrent subagents through the delegation tool, background bash commands, workflow fan-out — and a list that can name only one active task cannot represent it. The model was forced to either mislabel parallel tasks as `pending` or merge them into one vague item, and the UI progress checklist under-reported what was actually running.
+
+## Decision
+
+Make the single-`in_progress` cap a deployment policy instead of a fixed rule, requiring every composition to choose:
+
+- `packages/todo/tool-todo/src/index.ts` gains the required `Config.allowParallelInProgress` field. At `true`, `execute` accepts any number of active items and the description instructs the model to mark every actively-worked task — several during parallel work, one for sequential work — keeping at least one while work remains. At `false`, the description asks for exactly one and `execute` rejects a call marking more.
+- The durable-log invariant in `packages/todo/tool-todo/src/invariant.ts` no longer rejects snapshots with several active items, and does not follow the config, so previously-persisted logs are unaffected and parallel snapshots replay cleanly under either policy.
+
+The remaining coded invariants are unchanged: non-empty trimmed unique `content`, valid status enum. This supersedes the "at most one active" clause of the [original design's validation decision](2026-06-29-todo-write-tool.md); the rest of that Agent Note (whole-list replace, log-backed state, single owner) stands.
+
+## Why guidance, not a parallelism-aware invariant
+
+A coded invariant can only see the list, not the runtime: whether two `in_progress` items are legitimate depends on whether work is actually running concurrently, which the tool cannot observe. Enforcing a cap was therefore wrong in exactly the cases parallelism made it matter, and any replacement (for example, capping active items at the live subagent count) would couple the tool to runtimes it deliberately knows nothing about. The discipline of matching `in_progress` marks to genuinely concurrent work moves to the tool description, the same place ordering and list freshness already live.
+
+## The policy is a deployment choice
+
+Whether concurrent active tasks are legitimate depends on runtime concurrency the tool cannot observe — but whether a deployment's agents ever run work concurrently is knowable at composition time. That makes the policy a required `Config` field rather than a constant or default: every cordis.yml composition sets `allowParallelInProgress` deliberately, choosing `true` for agents that may fan out work or `false` for the single-active discipline.
+
+The flag moves the model-facing instruction and the accepted input together. Splitting them would be the bug: a description asking for one active task while `execute` accepts several teaches the model a rule the tool does not hold, and the reverse rejects calls the description invited. Only the active-status clause of the description varies, because that is the only instruction the policy changes.
+
+The durable-log invariant deliberately does NOT follow the flag. A log written while parallel work was allowed must still replay after a deployment tightens the policy, so tying `invariant.ts` to the current config would reject history that was valid when it was written. The invariant stays silent on the active count; the tool is where the policy applies, at the moment of the write.
+
+## Alternatives considered
+
+- **Keep the cap and add an explicit parallel opt-in flag** — an extra argument on every call to serve the common case; the flag would be noise for sequential work and still unverifiable.
+- **Cap active items at a configured maximum** — any fixed number is arbitrary. This is why the config field is a boolean policy switch and not a count: "may several tasks be active" is a property of the deployment, while "at most N" invents a threshold nothing can justify.
+- **Hardcode the parallel policy** — the first revision of this branch did, which is what made `allowParallelInProgress` necessary: a deployment running strictly sequential agents had no way back to the discipline it wanted.
+
+## The display surfaces are part of the change
+
+Lifting the cap makes a list shape reachable that no renderer had ever received, so this branch stacks on the [web todo display](2026-07-23-web-todo-display.md) rather than landing beside it: both change `tool-todo`, and the GUI is where a parallel plan becomes visible. Two web sites derived their one-line summary with `todos.find(t => t.status === 'in_progress')` — the collapsed plan-strip header and the `todo_write` row — and under the old cap that `find` was total, since at most one item could match. With several active it silently dropped every active item but the first: a four-item plan with three running tasks collapsed to the name of one, and the row read `1/4 已完成 · <one task>` while two others were in flight. The expanded list was always correct (it maps every item), which is why neither PR's tests caught it — only the collapsed header and the row lost information. The panel redesign in [#740](https://github.com/deepseek-harness/deepseek-harness/pull/740) has since replaced the collapsed header's named hint with `·`-joined per-status counts (localized, `1 completed · 2 in progress · 1 pending`, zero-count segments omitted), which reports parallel work correctly and needs no name to truncate; the row is the one site this branch still had to fix.
+
+The row takes `planSummary` in `toolviews/plan-summary.ts`. It names the first active item and counts the rest, so the row reports how many tasks are running instead of implying one. Naming every active item was rejected: the row is a single line, and an unbounded join would overflow it — the count degrades predictably where a list does not. The derivation sits inside the toolviews domain rather than in `contract/`, the inter-domain face: the panel computes its own counts inline and shares nothing with the row, so a contract module would declare a sharing relationship that no longer exists.
+
+`planSummary` returns the name and the count as separate fields rather than one joined string, because the row truncates its summary with `overflow: hidden` / `text-overflow: ellipsis`. A count appended to the task name sits at the far end of the truncatable text, so exactly the narrow viewports and long task names that make the count informative are the ones that clip it away, leaving a parallel plan indistinguishable from a sequential one. The row therefore hands the count to the shared `ToolRow` as `summarySuffix`, a non-shrinking slot beside the ellipsized summary text; a pre-joined string could not express that split, and pushing the count in front of the name was rejected because the task name is what the reader is looking for first.
+
+`summarySuffix` is a slot on `ToolRow` rather than markup owned by the todo row: every toolview renders through that shared component, whose `summary` is a plain ellipsized string with no place for a fragment that must survive the clip. Sitting outside the `.summary` rule, the suffix repeats that rule's `font-size` and `line-height` — the web shell leaves body text at the browser default rather than the row's 14px, so an unstyled span renders visibly larger than the text beside it on a 24px row. An error row drops the suffix, because its collapsed summary is the failure line rather than anything derived from the call args.
+
+## Deferred
+
+Two review findings are recorded here rather than fixed on this branch. The `summarySuffix` span carries no accessible name, so a screen reader reads the count without its noun (`… 实现 fixture 样本 +1`); naming it introduces localized copy with its own test contract, which belongs to an accessibility pass over the whole `ToolRow` summary line rather than to one row. And when the *first* active item's content is unusable — missing, mistyped, or blank once trimmed — the row drops the active clause and the count with it, so a parallel plan renders as bare counts; skipping forward to the first usable active item was rejected because call args are an explicitly unvalidated boundary where model order is the only ordering the row can honour, and dropping the unusable clause alone keeps the `done`/`total` counts, which are trustworthy regardless.
+
+## Consequences
+
+A todo list can now faithfully mirror parallel execution, and every surface renders several active markers at once: the plan strip's header counts the active items, and the row needed the derivation above. A composition that sets `allowParallelInProgress: true` no longer rejects a formerly-invalid snapshot shape; one that sets `false` keeps the old rejection, and the durable-log invariant accepts both. The model-facing description changed, which re-recorded the tool-catalog page and every snapshot sidecar carrying the todo schema. No count is recorded here: the set grows with every pinning scenario that lands, and the two point-in-time censuses this note previously carried were both stale within days. The operative rule is that a branch changing the tool description must refresh whichever sidecars landed after it branched — including the numbered `tool-schemas.<n>.expected.json` files pinning a subagent class, whose schemas the parent scenario does not cover — and `pnpm run test:snapshot:refresh` does it keylessly over the whole corpus. The web fixture's todo sample now runs two items `in_progress`, so both fixture-driven surfaces render a parallel plan. `packages/client/ui-conversation/tests/todo-panel.spec.tsx` pins the row summary and the plan strip over src, the ACP `todo-write` scenario records a three-todo plan with two active, and `apps/web/tests/todo-row.snapshot.ts` pins both surfaces in the assembled application — booted from the built `packages/client/*/lib/client.js` bundles, so it is the one place the keyed registration and the bundled wiring are under test. That last file records `summary`, `suffix`, and the strip's header as separate fields, so folding the `+N` count back into the summary string changes the expected output even though the concatenated text would read the same.
@@ -0,0 +1,54 @@
+# Agent Note: 允许同时存在多个 `in_progress` todo
+
+Status: implemented
+
+[English](2026-07-26-todo-parallel-in-progress.md) | 中文
+
+## 问题
+
+[原始 `todo_write` 设计](2026-06-29-todo-write-tool.md)在 `execute` 和持久日志不变式中都强制每个列表至多一个 `in_progress` 任务。该不变式假设工作是顺序进行的，但 harness 会运行真正并行的工作（通过委派工具启动的并发 subagent、后台 bash 命令、工作流扇出），而一个只能标出单个活跃任务的列表无法表示这种情况。模型被迫要么把并行任务错误标记为 `pending`，要么把它们合并成一个含糊的条目，导致 UI 进度清单少报了实际正在运行的工作。
+
+## 决策
+
+把单一 `in_progress` 上限从固定规则改为部署策略，并要求每个组合都作出选择：
+
+- `packages/todo/tool-todo/src/index.ts` 新增必填的 `Config.allowParallelInProgress` 字段。为 `true` 时，`execute` 接受任意数量的活跃条目，描述指示模型把每个正在处理的任务标记为 `in_progress`（并行工作时可以有多个，顺序工作时只有一个），并在仍有工作未完成时至少保留一个；为 `false` 时，描述要求恰好一个，`execute` 拒绝标记更多的调用。
+- `packages/todo/tool-todo/src/invariant.ts` 中的持久日志不变式不再拒绝含多个活跃条目的快照，且不跟随该配置，因此此前持久化的日志不受影响，并行快照在任一策略下都能干净回放。
+
+其余编码的不变式保持不变：`content` 去除首尾空白后非空且唯一、status 为合法枚举值。本决定取代[原始设计的校验决策](2026-06-29-todo-write-tool.md)中「至多一个活跃」的条款；该 Agent Note 的其余部分（整列表替换、日志支撑的状态、单一所有者）依然成立。
+
+## 为何用指引而非感知并行的不变式
+
+编码的不变式只能看到列表，看不到运行时：两个 `in_progress` 条目是否合理，取决于工作是否真的在并发运行，而这一点工具无法观测。因此，恰恰在并行让上限变得重要的场景里，强制上限反而是错的；任何替代方案（例如把活跃条目数限制为在线 subagent 的数量）都会把工具耦合到它有意一无所知的运行时上。把 `in_progress` 标记与真正并发的工作对应起来这一纪律，转移到工具描述中，也就是排序与列表新鲜度已经所在的地方。
+
+## 该策略是部署层的选择
+
+并发的活跃任务是否合理，取决于工具无法观测的运行时并发情况——但一个部署的 agent 是否会并发展开工作，在组装期就是可知的。因此该策略是必填的 `Config` 字段，而非常量或默认值：每个 cordis.yml 组合都会有意设置 `allowParallelInProgress`，为可能并行展开工作的 agent 选择 `true`，或为单活跃项纪律选择 `false`。
+
+该开关会同时改变面向模型的指令与接受的输入。把两者拆开才是 bug：描述要求只保留一个活跃任务、而 `execute` 却接受多个，等于教给模型一条工具并不遵守的规则；反过来则会拒绝描述所邀请的调用。描述中只有活跃状态那一句会变化，因为这是该策略唯一改变的指令。
+
+持久日志不变式刻意**不**跟随该开关。在允许并行时写下的日志，在部署收紧策略之后仍必须可回放，因此把 `invariant.ts` 绑定到当前配置会拒绝在写入当时合法的历史。不变式对活跃数量保持沉默；策略生效之处是工具，时机是写入的那一刻。
+
+## 曾考虑的替代方案
+
+- **保留上限并增加一个显式的并行 opt-in 标志**——为服务常见场景而给每次调用增加一个额外参数；这个标志对顺序工作而言只是噪声，而且仍然无法验证。
+- **把活跃条目限制在一个可配置的上限内**——任何固定数字都是任意的。这正是该配置字段是布尔策略开关而非数量的原因：「是否允许多个任务同时活跃」是部署的属性，而「最多 N 个」凭空发明了一个无从论证的阈值。
+- **把并行策略硬编码**——本分支的第一版就是如此，这也是 `allowParallelInProgress` 之所以必要的原因：运行严格顺序 agent 的部署没有任何办法回到它想要的纪律。
+
+## 展示面是本次改动的一部分
+
+解除上限使一种此前任何渲染器都不曾收到的列表形状变得可达，因此本分支 stack（栈叠）在 [web todo 展示](2026-07-23-web-todo-display.md)之上，而不是与之并行落地：两者都改 `tool-todo`，而 GUI 正是并行计划变得可见的地方。web 有两处用 `todos.find(t => t.status === 'in_progress')` 推导单行摘要——折叠态的计划横条表头与 `todo_write` 工具行——在旧上限下这个 `find` 是完备的，因为最多只能有一个条目匹配。一旦有多个活跃项，它会静默丢掉除第一个之外的全部活跃条目：一个四条目、三个任务在跑的计划折叠后只显示其中一个的名字，工具行读作 `1/4 已完成 · <一个任务>`，而另外两个仍在进行。展开态的列表始终正确（它遍历每个条目），这也是两个 PR 的测试都没抓到它的原因——只有折叠表头与工具行丢失了信息。其后 [#740](https://github.com/deepseek-harness/deepseek-harness/pull/740) 的面板重做已把折叠表头的具名提示换成以 `·` 连接的各状态计数（本地化后形如 `1 已完成 · 2 进行中 · 1 待处理`，计数为零的段落省略），它能正确报告并行工作，且不需要任何可被截断的名字；工具行才是本分支仍需修的那一处。
+
+工具行改用 `toolviews/plan-summary.ts` 中的 `planSummary`。它给出第一个活跃条目，并计数其余活跃项，因此工具行报告的是有多少任务在跑，而不是暗示只有一个。列出全部活跃条目被否决了：工具行是单行，无上界的拼接会溢出——在列表做不到的地方，计数能够可预测地降级。该推导放在 toolviews 域内而非 `contract/`（域间共享面）：面板自行内联计算其计数，与工具行不共享任何东西，因此放进 contract 会声明一种已不存在的共享关系。
+
+`planSummary` 把任务名与计数作为两个独立字段返回，而不是一个拼好的字符串，因为工具行用 `overflow: hidden` / `text-overflow: ellipsis` 截断其摘要文本。计数接在任务名之后时位于可截断文本的末端，于是恰恰是让计数变得有意义的那些场景——窄视口、长任务名——会把它裁掉，让并行计划看起来与顺序计划无异。因此工具行把计数交给共享的 `ToolRow`，作为 `summarySuffix`——一个紧邻被省略号截断的摘要文本、且不会收缩的槽位；一个预先拼好的字符串无法表达这个切分，而把计数放到任务名之前也被否决了：读者首先要找的是任务名。
+
+`summarySuffix` 是 `ToolRow` 上的槽位，而不是 todo 工具行自有的标记：每个 toolview 都经由这个共享组件渲染，而它的 `summary` 是一个会被省略号截断的普通字符串，容不下一个必须挺过截断的片段。该后缀落在 `.summary` 规则之外，因此重复了该规则的 `font-size` 与 `line-height`——Web 外壳把正文字号留在浏览器默认值而非该行的 14px，所以未加样式的 span 会明显大于同一 24px 行内与之并列的文本。错误行会丢弃该后缀，因为它折叠态的摘要是失败行，而非任何由调用 args 推导出的内容。
+
+## 暂缓项
+
+两条 review 结论在此记录而非在本分支修复。`summarySuffix` 这个 span 没有无障碍名称，屏幕阅读器读出的数量缺少它所修饰的名词（`… 实现 fixture 样本 +1`）；为它命名会引入带自身测试契约的本地化文案，这属于对整条 `ToolRow` 摘要行做的无障碍专项，而不属于某一行。以及，当*第一个*活跃条目的 content 不可用时——缺失、类型不对、或 trim 后为空——行会连同数量一起丢掉活跃子句，于是并行计划渲染成裸计数；向后跳到第一个可用活跃条目的方案被否决，因为调用 args 是一处明确未经校验的边界，模型给出的顺序是该行唯一能遵循的顺序，而只丢掉不可用的那个子句可以保住 `done`/`total` 计数——这两个数无论如何都是可信的。
+
+## 后果
+
+现在 todo 列表可以忠实反映并行执行，并且每个展示面都能一次渲染多个活跃标记：计划横条的表头会计数活跃条目，工具行则需要上述推导。设置 `allowParallelInProgress: true` 的组合不再拒绝一种此前无效的快照形状；设置为 `false` 的组合仍保留旧的拒绝行为，而持久日志不变式两者都接受。面向模型的描述发生了变化，这重新记录了 tool-catalog 页面以及每个带有 todo schema 的快照 sidecar。此处不记录数量：该集合会随每个新落地的 pin 场景增长，而本 Note 先前记过的两次点时刻计数都在几天内失实。有效规则是：改动工具描述的分支必须刷新它分叉之后落地的那些 sidecar —— 包括固定 subagent 类工具的编号文件 `tool-schemas.<n>.expected.json`，其 schema 不被父场景覆盖 —— `pnpm run test:snapshot:refresh` 可以无 key 地对整个语料完成刷新。web fixture 的 todo 样本现在有两个条目处于 `in_progress`，因此两个由 fixture 驱动的展示面渲染的都是并行计划。`packages/client/ui-conversation/tests/todo-panel.spec.tsx` 在 src 上固定工具行摘要与计划横条，ACP `todo-write` 场景录制的是三条目、两个活跃的计划，而 `apps/web/tests/todo-row.snapshot.ts` 在组装后的应用中固定这两个面——它从构建产物 `packages/client/*/lib/client.js` 启动，因此是唯一覆盖 keyed 注册与打包接线的地方。该文件把 `summary`、`suffix` 与横条表头记录为独立字段，因此即便拼接后的文本读起来一样，把 `+N` 计数折回摘要字符串也会改变预期输出。
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-29-web-message-icon-actions-and-clock.md
-2026-07-29-web-message-icon-actions-and-clock.md: f43f7f9c9687e4494993d7e225d11cf6446a9954
-2026-07-29-web-message-icon-actions-and-clock.zh.md: a6261c65c1e9d77cea2de5624b2c9fde1278c612
+2026-07-29-web-message-icon-actions-and-clock.md: feced6aeb11d176d6c774242a4d1dae14f6730f8
+2026-07-29-web-message-icon-actions-and-clock.zh.md: 5e33182421b423f45c84dbe1a979505f4c31b819
@@ -12,6 +12,8 @@ The web chat user bubble already had copy / branch / edit IconActions but no clo

 **User bubbles prepend a date-aware local clock to the existing IconActions row; the last content-text assistant of each turn appends a copy / branch / clock row with `margin-top: 16px`; both seats stay visible whenever mounted and re-format at the next local midnight.**

+The assistant seat is narrowed by the [completed-turn decision](../bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md): only a turn with a `turn/end` grants it, so a turn still producing steps hands the row to nothing. The user seat's branch control is removed outright by the [user-bubble branch removal](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md); a user row's IconActions are clock and copy.
+
 Both seats format `node.time` through `formatMessageClock`: same calendar day → `HH:mm`, earlier this year → `M月D日 HH:mm`, other years → `YYYY年M月D日 HH:mm`. `useCalendarDay` is a component-local day tick (timeout to the next local midnight) so memoized rows re-render when the calendar day changes without a new framework hook. `MessageItem` places the label before copy (figma `388:20051`). `ChatView` derives turn-tail seqs via `assistantActionsSeqs` and withholds `time` for mid-turn content; `AssistantMarkdown` places the row after branch (figma `43:32997`) only when `streaming` is false, the event time is known, and the node has non-empty text content. Think-only nodes, mid-turn narration, and the streaming tail omit the row. Copy writes joined text blocks. Both message rows pass their event's `seq` to the same fork callback; [Web session fork actions](2026-07-27-web-session-fork-actions.md) define the real mutation contract. Clipboard write and the clock helpers live in `message-chrome.ts`. The assembled surface is pinned by `apps/web/tests/message-actions.e2e.ts` (cold-seeded history + aria golden); aria normalization collapses every clock shape to `{{clock}}`.

 ## Alternatives considered
@@ -12,6 +12,8 @@ Web 聊天的用户气泡已有复制、分支、编辑 IconActions，但没有

 **用户气泡在既有 IconActions 行的开头添加感知日期的本地时钟；每个轮次中最后一条带 text 内容的 assistant 在正文下追加带 `margin-top: 16px` 的复制、分支、时钟；两边只要挂载就保持可见，并在下一个本地午夜重新格式化。**

+assistant 一侧的座位由[已完成轮次决策](../bug-fix/2026-08-05-turn-tail-actions-require-a-completed-turn.md)收紧：只有存在 `turn/end` 的轮次才授予该行，仍在产出步骤的轮次不把该行交给任何节点。user 一侧的分支控件被 [user 气泡分支移除决策](../simplification/2026-08-06-user-bubbles-drop-the-branch-action.md)直接移除；user 行的 IconActions 只有时钟与复制。
+
 两边都通过 `formatMessageClock` 格式化 `node.time`：同一日历日 → `HH:mm`，同年更早 → `M月D日 HH:mm`，跨年 → `YYYY年M月D日 HH:mm`。`useCalendarDay` 是组件本地的日刻度（定时到下一个本地午夜），因此 memo 行在日历日变化时会重渲染，且不新增框架钩子。`MessageItem` 把标签放在复制之前（figma `388:20051`）。`ChatView` 通过 `assistantActionsSeqs` 推导轮次尾部的 seq，并不为轮次中间的内容传入 `time`；`AssistantMarkdown` 把该行放在分支之后（figma `43:32997`），且仅在 `streaming` 为 false、已知事件时间、且节点含非空 text 内容时渲染。纯 Think 节点、轮次中间的叙述与流式尾部省略该行。复制写入拼接后的 text 块。两种消息行都把自己的事件 `seq` 交给同一个 fork 回调；真实 mutation 契约由 [Web session fork 操作](2026-07-27-web-session-fork-actions.md)定义。剪贴板写入与时钟辅助函数放在 `message-chrome.ts`。组装后的界面由 `apps/web/tests/message-actions.e2e.ts`（冷 seed 历史 + aria golden）钉住；aria 归一化把每种时钟形态折叠为 `{{clock}}`。

 ## 曾考虑的方案
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-code-mode-language-dispatch.md
+2026-07-31-code-mode-language-dispatch.md: 96001252d6494d058a8df9974fb5a0d59e7d7112
+2026-07-31-code-mode-language-dispatch.zh.md: aa7eb2a6b4b9117f1d707b37afcdbe12b814bad2
@@ -0,0 +1,46 @@
+# Agent Note: Code Mode language dispatch and the Python SDK renderer
+
+Status: implemented
+
+English | [中文](2026-07-31-code-mode-language-dispatch.zh.md)
+
+## Problem
+
+Code Mode generated one SDK flavor: TypeScript. `ToolRegistry` hard-coded `renderToolsSdk` for the `tools:sdk` section and `requireCodeRuntime` rejected any `ctx.codeRuntime.language !== 'typescript'`. Adding a CPython backend means a program's source language is no longer fixed: the same visible tool registry must project a Python SDK when a Python runtime is loaded, and the model-facing `run_code` schema strings ("Execute a Python program …") must match the SDK section's language so the model never sees a TypeScript instruction over a Python runtime.
+
+This is the tool-facing half of the multi-language Code Mode split; the [code-runtime seam](../../../../packages/code-runtime/code-runtime/README.md) already carries `CodeRuntime.language`. This note owns only how `dsh-tools` dispatches on that field. The backend that implements `language: 'python'` is owned by its own note, delivered separately.
+
+## Decision
+
+Language selection is a lookup on `ctx.codeRuntime.language`, resolved lazily at prompt assembly, against two parallel tables in `dsh-tools`:
+
+- `SDK_RENDERERS` (index.ts) maps a language to its `tools:sdk` renderer — `typescript → renderToolsSdk`, `python → renderToolsSdkPy`. The `tools:sdk` section reads the loaded runtime's language and picks the renderer; `requireCodeRuntime` rejects a `mode: code`/`both` runtime whose language is absent from the table, naming the known languages.
+- `RUN_CODE_FLAVORS` (code-mode.ts) maps a language to its two model-facing `run_code` strings (tool `description` and the `code` parameter description), so a language's SDK section and its transport schema always agree.
+
+Both tables are read with `Object.hasOwn` before use so a language named `toString`/`constructor` cannot resolve an inherited `Object.prototype` member as a renderer. The two guards differ in reachability: `SDK_RENDERERS`' in-callback guard is unreachable because `requireCodeRuntime` validated the same `const` table earlier in the same callback (it carries a `/* v8 ignore */`), while `RUN_CODE_FLAVORS`' guard is the primary, publicly reachable rejection — any language absent from the flavor table hits it through `run_code`'s language-aware getters, which the public `schemas()` reaches without passing `requireCodeRuntime` first; the test reads one of those getters off the definition directly, under a language absent from both tables. A language present in `SDK_RENDERERS` but not `RUN_CODE_FLAVORS` is drift the shared `CodeSdkLanguage` `satisfies` pins reject at `typecheck`, so it is not an input either guard can see; what the guards still own is a mounted runtime reporting a language absent from both tables. Schema emission reads the runtime through `peekRuntime()` rather than `requireRuntime()`: `undefined` (no runtime mounted, reached by definition readers and `schemas()`, of which the doc-catalog harvest is the only shipped one and none of which feeds a model because assembly passes `requireCodeRuntime` first) degrades to the TypeScript flavor, whereas a mounted unknown language fails loud — this is NOT the silent fallback rejected below, which concerns emitting a wrong-language SDK for a real runtime. Adding a backend language is three parallel edits — a `CodeSdkLanguage` member and the two table entries — plus its renderer and the prose that names the well-known values instead of deriving them (the seam's `dsh-code-runtime` README pair, its `CodeRuntime.language` JSDoc, and the `docs/core-data-structures/code-runtime.md` pair; this package's own README pair and its `Config.mode` JSDoc — no gate checks any of it), with no `agent-loop` or registry-structure change.
+
+`code-mode.ts` depends only on the runtime seam (`@deepseek-ai/dsh-code-runtime`), never on a concrete backend; dispatch is by `runtime.language` at run time. The tool layer therefore lands independently of the protocol and backend PRs — it needs only the seam's `language` field, which is already on master.
+
+### The Python SDK renderer
+
+`py-types.ts` renders the same unified tool-schema vocabulary `jsonSchemaToTs` covers, targeting Python: `jsonSchemaToPy` emits a type expression per JSON-schema node, and `renderToolsSdkPy` assembles named `TypedDict`s for each visible tool's arguments and canonical output plus a `tools` object with usage instructions equivalent to the TypeScript flavor. Unsupported raw constructs degrade rather than throwing during assembly, matching the TypeScript renderer's contract. The output is deterministic — lexicographic tool order, byte-identical text for an unchanged tool set — so the prompt stays prefix-cache-friendly. Lexicographic means one ordered member stream: a tool whose name is not a legal attribute is listed as a `tools[name]` comment in its sorted position rather than partitioned to the end, matching how the TypeScript flavor quotes an exotic key in place. That stream forces one thing directly — comment lines are not statements, so a tool set that emits no method at all still needs an explicit `pass`. Three further rules are Python-specific rather than consequences of the ordering. The usage contract states that the declarations are static stubs and arguments are plain `dict`/`list` values: a `TypedDict` reads as a constructible class, so a model that writes `FooArgs(field=1)` gets a `NameError` — TypeScript's `interface` is visibly a type, and the TS flavor's "runs type-stripped" clause already covers it. A description becomes the method's docstring emitted as the FIRST statement of its body: above the `async def` the first one would document the `Tools` class and the rest would be dead expressions, leaving every method undocumented. And a `list[…]` chain degrades to `Any` past `MAX_LIST_NESTING`, because CPython's tokenizer rejects a line with more than 200 open brackets and the block must stay parseable Python — the same reason `docLines` escapes quotes and backslashes. `ts-types` needs neither: TypeScript attaches a leading `/** … */` to the member that follows it and bounds nesting nowhere in its grammar.
+
+The standard that cap serves is grammatical validity, and the boundary is deliberate: a long `A | B | …` union is valid Python at any length and is left uncapped, even though CPython's `compile()` exhausts its C recursion walking the left-nested `BinOp` spine (measured on 3.9: 1,000 branches compile, 5,000 raise `RecursionError`). Nothing compiles this block — it is prompt text — so that limit costs nothing, whereas capping union length would retire the deep-chain tests that pin the walk's linear time and the class-name propagation cap. A future renderer that does need compilable output should flatten unions rather than truncate them.
+
+`renderType` validates the whole schema once (`assertSupportedJsonSchema`) and then trusts it, wrapping the walk in one `try/catch` that degrades to `Any` — the same trusted-after-validation stance the sibling `ts-types` renderer takes at this typed same-process seam ([Trust TypeScript at typed same-process seams](../../../../AGENTS.md)). It deliberately carries NO defenses against a schema whose accessors mutate between reads (post-validation cycles, TOCTOU on `const`/`enum`, self-referential functions): the input is a first-party registration (a `defineTool` literal or a raw registration) or a wire-derived plain JSON schema — the former is trusted per AGENTS.md, the latter is a `JSON.parse` product that physically cannot carry accessors, and `renderType` re-validates the whole tree on every call regardless — so such inputs are unreachable, and adding per-shape guards here would break symmetry with `ts-types` (which has none) for values the static interface forbids. `jsonSchemaToPy(schema: unknown)` accepts `unknown` and returns `Any` on a malformed schema — the Python counterpart of the TS flavor's `unknown` — but its contract is "degrade an unsupported schema", not "survive an adversarial mutating one".
+
+## Alternatives considered
+
+- **A `language` config field on `ToolRegistry`.** Deployment would then have two places to name the language (the loaded runtime and the tools config) that can disagree; the loaded runtime is the single source of truth, so the registry reads it rather than duplicating it.
+- **Importing the Python backend into `code-mode.ts` to detect it.** That would couple the tool layer to a concrete backend and force the protocol/backend PRs to land first. Runtime dispatch on `language` keeps the layer backend-agnostic and independently shippable.
+- **A default renderer for an unknown language.** A silent fallback would emit a TypeScript SDK over, e.g., a Ruby runtime — the model would see instructions in the wrong language. Failing loud at assembly is the repository's misconfiguration stance.
+
+## Consequences
+
+Adding a backend language is three parallel edits — a `CodeSdkLanguage` member, an `SDK_RENDERERS` entry, and a `RUN_CODE_FLAVORS` entry — plus the renderer function the second points at, with no change to `agent-loop` or the registry structure. The two tables (`SDK_RENDERERS`, `RUN_CODE_FLAVORS`) must stay in step, and that invariant is checked statically rather than left to review: both are `satisfies`-checked against that one union, so a language added to one and not the other fails `typecheck`. This is the mechanical form the drift risk deserves — the runtime `Object.hasOwn` guards would catch it too, but only once a backend reporting that language ships: one PR after the drift, at the consumer's integration point rather than where it was introduced, and on this base never, since no second backend exists. The tables keep their `Record<string, …>` declared type because `CodeRuntime.language` is an unconstrained `string`; the union pins what the harness ships, the guards reject what a runtime reports. What stays outside that check is the prose that names the well-known values instead of deriving them: `dsh-code-runtime`'s README pair, its `CodeRuntime.language` JSDoc, and the `docs/core-data-structures/code-runtime.md` pair at the seam, plus this package's own README pair and its `Config.mode` JSDoc. Earlier notes name the values as the state at their own PR and are not on that list. Two separate reasons keep it ungated. Prose is not type-checked at all, wherever the union lives. And no type-level pin can stand in for it here: the interface package must not import its consumer's table, and `CodeRuntime.language` stays an unconstrained `string` by design, so moving the union into the seam would not apply it either. A unit test pinning the two key sets equal was rejected in favor of this: it would buy the same check at the cost of a test-only export of two private tables, and would run later than the compiler does. Which of the two runtime failures surfaces depends on the entry point, for a language absent from both tables: assembly reports the missing renderer, because `wireSchemas` calls `requireCodeRuntime` before projecting, while the public `schemas()` reaches `run_code`'s language-aware getters first and reports the missing flavor. The tool layer stays free of any concrete backend dependency, so it lands and is testable on master ahead of the Python protocol and backend.
+
+The cost is that the Python branch of both tables is unreachable on this base: `CodeRuntime.language` is set by the loaded backend, the only published backend is `dsh-code-runtime-worker` (`'typescript'`), and the registry reads the loaded runtime rather than a config field, so no assembled application can select `renderToolsSdkPy` or `PYTHON_FLAVOR`. The model-visible surface is therefore unchanged by this note's work until a backend reporting `'python'` is published, and this PR's coverage is unit-level — the renderer output plus the dispatch and rejection paths. The keyless snapshot for the Python model interface belongs to the PR that publishes that backend, because only there does a real `cordis.yml` over published plugins produce a Python assembly; a snapshot example that mounted a fixture runtime here would assert against a test double, which [docs/testing.md](../../../../docs/testing.md) rejects as a substitute for the assembled application transcript.
+
+Two runtime contracts the Python SDK text asserts are owed by that same backend PR. First, the instructions tell the model that exactly `tools` and `ToolCallError` are bound and that the declared `TypedDict` classes are not, so the backend must inject those two names — with `ToolCallError.toolName` populated per the seam's `errorClass` contract — and must NOT bind the declared class names into the program's globals; injecting them "helpfully" would make the SDK text false. Second, the language has to be bound to the request: `requireCodeRuntime` resolves `ctx.codeRuntime` separately at assembly and at `run_code` execution, so a reload that swapped the runtime between those two points would hand a program written against one flavor to the other. The split is finer than those two points — `run_code`'s `description` and `parameters` getters each call `resolveFlavor(peekRuntime())`, and `schemaOf` destructures both, so one projection reads the runtime twice; both reads are for `run_code`'s own schema, since the getters are installed on that one definition and every other definition carries plain data properties. A reload between those two reads yields a single schema whose two halves name different languages. Neither is reachable here — one published backend means both reads return the same flavor and no program ever runs against this renderer's output — and the cross-language rejection is not testable until a second language exists.
+
+Third, that PR owns the CPython floor, and with it the renderer's Unicode-table skew. Four expressions read the running engine's tables (Node 22.23.1: Unicode 17.0) while the interpreter uses its own (CPython 3.9.6: 13.0.0): `isBareIdentifier`'s `IDENTIFIER`, and `camelCase`'s split set, head test, and `toUpperCase()`. An interpreter older than the engine is the failing direction — the engine emits a character its tokenizer refuses, taking the whole block down — and it arrives by three independent paths. Through the predicate, a bare method or field name carrying a character added between the two versions — to `XID_Start` at its head, or to `XID_Continue` in any tail position, the middle of a name included. Through `camelCase`'s XID reads, a class name, which reaches emitted text whenever any object shape in the tool's schema declares a `TypedDict`, and which the predicate's verdict on the tool name does not gate: `zz-` plus U+1E4D0 never reaches the predicate's skew, since the `-` rejects it outright, yet it still declares `class Zz𞓐xArgs`. Through the case mapping, a class name derived from a tool the predicate accepted — a different table and a wider window than XID membership: U+019B is XID_Start and NFKC-stable, so `async def ƛ` compiles on 3.9.6, but Node uppercases it to U+A7DC (unassigned there; CPython's own `.upper()` is the identity) and `class ꟜArgs` fails with `invalid non-printable character U+A7DC`. The exposure window is the characters and mappings that changed between the two versions, so the PR that names a supported CPython range must decide explicitly between accepting it and pinning all four read points to tables for that floor — pinning the predicate alone leaves both class-name paths open. Nothing here can decide it: the floor does not exist yet, and a table pinned to a guess would be a deployment-varying constant with no configurability behind it. A second axis rides along with the floor and is not one of the four: the names and syntax the block would evaluate at definition time. `TypedDict` needs 3.8, the PEP 585 builtin generics `dict[str, Any]` and `list[…]` need 3.9, an `A | B` annotation 3.10, and `NotRequired` 3.11. These are not parse failures — the block parses on any version, which is the standard the `MAX_LIST_NESTING` cap serves — but definition-time evaluation failures, and nothing in the product evaluates this text. Recording them with the read points keeps "parseable on the supported range" from being read as "executable on it".
@@ -0,0 +1,46 @@
+# Agent Note: Code Mode 语言分发与 Python SDK 渲染器
+
+Status: implemented
+
+[English](2026-07-31-code-mode-language-dispatch.md) | 中文
+
+## 问题
+
+Code Mode 只生成一种 SDK 形态：TypeScript。`ToolRegistry` 为 `tools:sdk` 段硬编码了 `renderToolsSdk`，且 `requireCodeRuntime` 会拒绝任何 `ctx.codeRuntime.language !== 'typescript'`。引入 CPython 后端后，程序的源语言不再固定：同一个可见工具注册表在加载 Python 运行时时必须投射出 Python SDK，而面向模型的 `run_code` schema 字符串（"Execute a Python program …"）也必须与 SDK 段的语言一致，模型才不会在 Python 运行时下看到 TypeScript 指令。
+
+这是多语言 Code Mode 拆分中面向工具的那一半；[代码运行时 seam](../../../../packages/code-runtime/code-runtime/README.md) 已经携带 `CodeRuntime.language`。本 Note 只负责 `dsh-tools` 如何在该字段上分发。实现 `language: 'python'` 的后端由它自己的 Note 负责，单独交付。
+
+## 决策
+
+语言选择就是对 `ctx.codeRuntime.language` 的查表，在 prompt 装配时惰性解析，查 `dsh-tools` 里两张平行的表：
+
+- `SDK_RENDERERS`（index.ts）把语言映射到它的 `tools:sdk` 渲染器——`typescript → renderToolsSdk`、`python → renderToolsSdkPy`。`tools:sdk` 段读取所加载运行时的语言并选出渲染器；`requireCodeRuntime` 拒绝其语言不在表中的 `mode: code`/`both` 运行时，并列出已知语言。
+- `RUN_CODE_FLAVORS`（code-mode.ts）把语言映射到它那两条面向模型的 `run_code` 字符串（工具 `description` 与 `code` 参数描述），使一种语言的 SDK 段与它的传输 schema 始终一致。
+
+两张表在使用前都以 `Object.hasOwn` 读取，这样名为 `toString`/`constructor` 的语言不会把继承自 `Object.prototype` 的成员解析成渲染器。两个守卫的可达性不同：`SDK_RENDERERS` 的段内守卫不可达，因为 `requireCodeRuntime` 已在同一回调更早处校验过同一张 `const` 表（它带 `/* v8 ignore */`）；而 `RUN_CODE_FLAVORS` 的守卫是主要的、可公开到达的拒绝路径——任何缺席 flavor 表的语言都经 `run_code` 的语言感知 getter 到达它，而公共 `schemas()` 抵达那些 getter 时并未先过 `requireCodeRuntime`；测试直读 definition 上的其中一个 getter，用的是对两张表都缺席的语言。「在 `SDK_RENDERERS` 里却不在 `RUN_CODE_FLAVORS` 里」这种漂移已由共享的 `CodeSdkLanguage` `satisfies` 在 `typecheck` 处拒绝，两个守卫都看不到这种输入；它们如今负责的是所挂载运行时报告了一门两张表都缺席的语言。schema 发射通过 `peekRuntime()` 而非 `requireRuntime()` 读取运行时：`undefined`（无运行时，由直读 definition 的读者与 `schemas()` 到达，其中 doc-catalog 采集是唯一已交付的一个，而它们都不会喂给模型，因为组装路径先过 `requireCodeRuntime`）降级到 TypeScript flavor，而挂载了未知语言则 fail loud——这不是下方被否决的静默回退，那指的是为真实运行时发出错误语言的 SDK。新增一门后端语言是三处并列编辑——一个 `CodeSdkLanguage` 成员加两条表项——再加它的渲染器，以及点名已知值而非从中派生的散文（seam 侧的 `dsh-code-runtime` README 双语对、它的 `CodeRuntime.language` JSDoc 与 `docs/core-data-structures/code-runtime.md` 双语对；本包自己的 README 双语对与它的 `Config.mode` JSDoc，无任何 gate 检查其中任何一处），不动 `agent-loop`，也不动注册表结构。
+
+`code-mode.ts` 只依赖运行时 seam（`@deepseek-ai/dsh-code-runtime`），绝不依赖具体后端；分发在运行时按 `runtime.language` 进行。因此工具层独立于协议和后端 PR 落地——它只需要 seam 的 `language` 字段，而该字段已在 master 上。
+
+### Python SDK 渲染器
+
+`py-types.ts` 渲染 `jsonSchemaToTs` 所覆盖的同一套统一工具 schema 词汇，目标为 Python：`jsonSchemaToPy` 为每个 JSON-schema 节点发出一个类型表达式，`renderToolsSdkPy` 为每个可见工具的参数与规范输出装配具名 `TypedDict`，再加一个带用法说明的 `tools` 对象，与 TypeScript 形态等价。不支持的原始构造在装配时降级而非抛错，与 TypeScript 渲染器的契约一致。输出是确定性的——工具按字典序排列，工具集不变时文本逐字节相同——因此 prompt 保持 prefix-cache 友好。字典序意味着单一有序的成员流：名字不是合法属性的工具以 `tools[name]` 注释出现在它排序后的位置上，而不是被分拣到末尾，与 TypeScript 形态就地为异常键加引号的做法一致。这个成员流直接决定了一件事：注释行不是语句，所以一个不发出任何方法的工具集仍需显式 `pass`。另有三条规则并非源自排序，而是 Python 特有。其一，用法约定声明这些声明只是静态存根、参数为普通 `dict`/`list` 值：`TypedDict` 读起来像一个可构造的类，模型若写 `FooArgs(field=1)` 会得到 `NameError`——TypeScript 的 `interface` 一眼就是类型，且 TS 形态的「runs type-stripped」一句已经覆盖了它。其二，描述会成为方法的 docstring，且必须作为方法体的**第一条语句**发出：放在 `async def` 之上，第一条会变成 `Tools` 的类文档、其余都是无效果表达式，导致每个方法都没有文档。其三，`list[…]` 链超过 `MAX_LIST_NESTING` 后降级为 `Any`，因为 CPython 的 tokenizer 拒绝一行中超过 200 个同时未闭合的括号，而这个块必须是可解析的 Python——与 `docLines` 转义引号和反斜杠是同一个理由。`ts-types` 两者都不需要：TypeScript 会把前置的 `/** … */` 附着到其后的成员上，其语法也不对嵌套设限。
+
+该上限服务的标准是**语法合法性**，这条边界是有意划定的：长的 `A | B | …` union 在任何长度下都是合法 Python，故不设上限——尽管 CPython 的 `compile()` 在沿左嵌套 `BinOp` 脊柱下降时会耗尽 C 递归（在 3.9 上实测：1,000 个分支可编译，5,000 个抛 `RecursionError`）。没有任何东西会编译这个块——它是提示词文本——所以那条限制在这里没有代价；而给 union 长度封顶会作废那几个钉住 walk 线性时间与类名传播上限的深链测试。将来若有渲染器确实需要可编译的输出，应当把 union 拍平，而不是截断。
+
+`renderType` 先用 `assertSupportedJsonSchema` 整树校验一次、随后信任它，用单个 `try/catch` 把整个遍历兜住并降级为 `Any`——与姊妹渲染器 `ts-types` 在这个 typed 同进程 seam 上采取的「校验后信任」姿态一致（[Trust TypeScript at typed same-process seams](../../../../AGENTS.md)）。它有意不设任何针对「访问器在多次读取间变值」的防御（校验后成环、`const`/`enum` 的 TOCTOU、自引用函数）：输入是第一方注册（`defineTool` 字面量或 raw 注册）或从 wire 桥接而来的纯 JSON——前者按 AGENTS.md 受信任，后者是 `JSON.parse` 产物、物理上不可能携带访问器，且每次调用 `renderType` 都会整树重新校验——这类输入不可达，而在此加逐形态守卫会为静态接口所禁止的值破坏与 `ts-types`（没有这类守卫）的对称。`jsonSchemaToPy(schema: unknown)` 接受 `unknown` 并对畸形 schema 返回 `Any`——TypeScript 形态 `unknown` 的对应物——但它的契约是「降级不支持的 schema」，而非「扛住对抗性的可变 schema」。
+
+## Alternatives considered
+
+- **在 `ToolRegistry` 上加一个 `language` 配置字段。** 那样部署方就会有两处命名语言（所加载的运行时与 tools 配置）且可能相互矛盾；所加载的运行时是唯一真相来源，故注册表读取它而不复制它。
+- **把 Python 后端 import 进 `code-mode.ts` 来检测它。** 那会把工具层耦合到具体后端，并迫使协议/后端 PR 先落地。按 `language` 运行时分发使该层保持后端无关、可独立发布。
+- **为未知语言提供默认渲染器。** 静默回退会在比如 Ruby 运行时上发出 TypeScript SDK——模型会看到错误语言的指令。在装配处 fail loud 是本仓库对错误配置的立场。
+
+## Consequences
+
+新增一门后端语言是三处并列编辑——一个 `CodeSdkLanguage` 成员、一个 `SDK_RENDERERS` 表项、一个 `RUN_CODE_FLAVORS` 表项——再加第二处所指向的渲染器函数，不动 `agent-loop`，也不动注册表结构。两张表（`SDK_RENDERERS`、`RUN_CODE_FLAVORS`）必须同步，且这条不变式由静态检查把关，而非交给 review：两张表都以 `satisfies` 对上述同一个 union 校验，因此只加其一而漏掉另一会在 `typecheck` 处失败。这正是该漂移风险应有的机械形式——运行期的 `Object.hasOwn` 守卫同样能捕获，但要等到有后端报告该语言之后：晚于漂移引入一个 PR，且触发点在消费方的集成处而非漂移引入处；在当前 base 上则永远不会触发，因为不存在第二个后端。两张表的声明类型仍是 `Record<string, …>`，因为 `CodeRuntime.language` 是不受约束的 `string`：union 钉住本仓库交付了什么，守卫拒绝运行时报告了什么。落在这条检查之外的是点名已知值而非从中派生的散文：seam 侧的 `dsh-code-runtime` README 双语对、它的 `CodeRuntime.language` JSDoc 与 `docs/core-data-structures/code-runtime.md` 双语对，再加本包自己的 README 双语对与它的 `Config.mode` JSDoc。更早的 note 点名这些值时记的是其自身 PR 当时的状态，不在此列。让它无 gate 的是两条独立理由。其一，散文根本不受类型检查，union 放在哪里都一样。其二，类型级替代在这里也不可用：接口包不得 import 其消费方的表，而 `CodeRuntime.language` 按设计保持不受约束的 `string`，即便把 union 迁进 seam 也不会作用到它。用一个断言两张表键集相等的 unit test 的方案被否决：它买到的是同一条检查，代价却是把两张私有表做测试专用导出，且运行时机晚于编译器。对两张表都缺席的语言，两种运行期失败中报出哪一条随入口而异：组装路径报缺渲染器，因为 `wireSchemas` 在投影前先调 `requireCodeRuntime`；而公共 `schemas()` 先经过 `run_code` 的语言感知 getter，报的是缺 flavor 表项。工具层不依赖任何具体后端，因此它能先于 Python 协议和后端在 master 上落地并可测。
+
+代价是两张表的 Python 分支在当前 base 上不可达：`CodeRuntime.language` 由所加载的后端设定，已发布的后端只有 `dsh-code-runtime-worker`（`'typescript'`），而注册表读取的是所加载的运行时而非某个配置字段，因此没有任何一份组装好的应用能选中 `renderToolsSdkPy` 或 `PYTHON_FLAVOR`。也就是说，在报告 `'python'` 的后端发布之前，本 note 的工作不改变模型可见表面，本 PR 的覆盖因此是 unit 级——渲染器输出加分发与拒绝路径。Python 模型界面的 keyless snapshot 归属于发布该后端的那个 PR，因为只有在那里，一份基于已发布插件的真实 `cordis.yml` 才会产出 Python 组装；在此处挂载 fixture 运行时的快照示例断言的是测试替身，而 [docs/testing.md](../../../../docs/testing.md) 明确拒绝以此替代组装好的应用 transcript。
+
+Python SDK 文本断言的两条运行时契约同样归属那个 backend PR。其一，说明文字告诉模型运行时恰好绑定 `tools` 与 `ToolCallError` 两个名字、所声明的 `TypedDict` 类不绑定，因此后端必须注入这两个名字（并按 seam 的 `errorClass` 契约填充 `ToolCallError.toolName`），且**不得**把所声明的类名绑进程序全局——「好心」注入会使这段 SDK 文本变成假话。其二，语言必须绑定到请求上：`requireCodeRuntime` 在组装时与 `run_code` 执行时分别解析 `ctx.codeRuntime`，若在这两点之间发生重载并换掉运行时，就会把针对一种形态写成的程序交给另一种形态执行。分裂比这两点更细——`run_code` 的 `description` 与 `parameters` 两个 getter 各自调用 `resolveFlavor(peekRuntime())`，而 `schemaOf` 会解构这两个字段，因此一次投影读两次运行时；两次都属于 `run_code` 自己的 schema，因为这两个 getter 只装在那一个 definition 上，其余 definition 携带的都是普通数据属性。在这两次读取之间重载会产出单个 schema 的两半分属不同语言。两者在此处都不可达——只有一个已发布后端意味着两次读取返回同一形态，且没有任何程序会针对本渲染器的输出运行——而跨语言拒绝在第二门语言存在之前也无法测试。
+
+其三，那个 PR 拥有 CPython 版本下限，连带拥有本渲染器的 Unicode 表偏斜。有四处表达式读所运行引擎的表（Node 22.23.1：Unicode 17.0），而解释器用它自己的表（CPython 3.9.6：13.0.0）：`isBareIdentifier` 的 `IDENTIFIER`，以及 `camelCase` 的切分集、头部测试与 `toUpperCase()`。解释器旧于引擎是会失败的那个方向——引擎发出的字符被其 tokenizer 拒收，整个块随之不可解析——而它经三条独立路径抵达。经判据抵达的是裸发的方法名或字段名，其中带有一个在两个版本之间新增的字符——首位加进 `XID_Start`，或尾部任意位置（含名字中部）加进 `XID_Continue`。经 `camelCase` 的 XID 读取抵达的是类名：只要工具 schema 中有任一对象形态声明 `TypedDict`，该类名就进入发出的文本，且判据对工具名的裁决并不对它设闸——工具名 `zz-` 加 U+1E4D0 因 `-` 被判据直接拒绝、从不触及那里的偏斜，却照样声明 `class Zz𞓐xArgs`。经大写映射抵达的是由判据已接受的工具派生出的类名——这是另一张表，窗口也比 XID 归属更宽：U+019B 既是 XID_Start 又 NFKC 稳定，故 `async def ƛ` 在 3.9.6 上可编译，但 Node 将其大写为 U+A7DC（在那里未分配；CPython 自己的 `.upper()` 在此是恒等），于是 `class ꟜArgs` 以 `invalid non-printable character U+A7DC` 失败。暴露窗口是两个版本之间发生变化的那些字符与映射，所以宣布支持某个 CPython 范围的那个 PR 必须在「接受该暴露」与「按该下限的表钉住全部四个读取点」之间显式作出决定——只钉判据会同时留下两条类名路径。此处无法决定：下限尚不存在，而按猜测钉死一张表会成为一个随部署而变、却没有可配置性支撑的常量。还有第二条轴随该下限一同确定，且不属于那四个读取点：本块在定义期会被求值的那些名字与语法。`TypedDict` 需要 3.8，PEP 585 的内建泛型 `dict[str, Any]` 与 `list[…]` 需要 3.9，`A | B` 形式的注解需要 3.10，`NotRequired` 需要 3.11。这些不是解析失败——本块在任何版本上都能解析，这正是 `MAX_LIST_NESTING` 上限所服务的标准——而是定义期求值失败，且产品中没有任何东西会求值这段文本。把它们与那四个读取点记在一起，可避免把「在所支持范围上可解析」读成「在其上可执行」。
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/simplification/2026-08-06-user-bubbles-drop-the-branch-action.md
+2026-08-06-user-bubbles-drop-the-branch-action.md: 817b5e72b7e18b03ddb3a160e6f7a86b04f02764
+2026-08-06-user-bubbles-drop-the-branch-action.zh.md: dab3890818d872d7bbb3ac9bcab014ce9b829a61
@@ -0,0 +1,27 @@
+# Agent Note: User and steering bubbles drop the branch action
+
+Status: implemented
+
+English | [中文](2026-08-06-user-bubbles-drop-the-branch-action.zh.md)
+
+## Problem
+
+Every user and consumed-steering bubble rendered the branch control under the completed-turn-tail gate of the [completed-turn-tail decision](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md). On those bubbles the gate is effectively permanent: a turn-opening user message is followed by its own turn's nodes, and a consumed steering message is mid-turn by construction, so the control could enable only when the turn ended with no node after the message at all — a cancel before the first model event. Readers therefore saw a control that never enables, with a tooltip promising a state the button cannot reach. The affordance also misled when read at all: a fork at a message seq cuts at the containing `turn/end`, so "branch at my message" includes the answer below it — the opposite of the branch-to-re-ask reading a control on one's own bubble suggests.
+
+## Decision
+
+User and steering bubbles render no branch action. `MessageItem` loses its fork props, `PendingSteeringBubble` loses its `showBranch` special case, and `messageBranchSeqs` narrows to `assistantBranchSeqs`: only a completed turn's transcript tail that is the turn's own content-text assistant may fork. The branch affordance lives solely under the settled answer.
+
+A turn containing a steer keeps its fork point unchanged: fork is a log-prefix cut at `turn/end`, and the steer is model-visible history the child must inherit, so the settled answer of a steered turn forks like any other. The assistant-side gate and its visible-but-unavailable presentation are also unchanged — under an answer, unavailable is a transient, reachable state (a trailing tool or error row currently owns the tail), which is exactly what the tooltip is for.
+
+## Alternatives considered
+
+**Hide the control on message bubbles only while ineligible.** Rejected: it preserves the near-unreachable enabled case at the cost of an icon that appears on one's own bubble only when a turn died before producing anything, an inconsistency not worth the case it serves.
+
+**Keep the visible-but-unavailable control (status quo).** Rejected: the [completed-turn-tail decision](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md) chose visibility so the tooltip could explain a boundary the reader can reach; on user and steering bubbles the boundary is unreachable in practice, so the explanation props up a control that should not exist there.
+
+**Branch-before-the-message semantics on user bubbles.** Out of scope: re-asking from one's own prompt needs a cut before the message plus composer prefill, a different Host operation. Removing the current control keeps that seat free for such a feature instead of squatting on it with opposite semantics.
+
+## Consequences
+
+The only fork handles are the enabled branch controls under settled answers. A turn cancelled before any node followed its message loses its only handle and has no fork point, matching turns whose tail is a content-free interrupted node. Web aria goldens across `apps/web` drop the user-bubble disabled-branch row and its hidden explanation text. Package tests pin that user and steering bubbles render no branch control and that a steering-tail turn leaves the narration's control unavailable.
@@ -0,0 +1,27 @@
+# Agent Note：user 与 steering 气泡移除分支操作
+
+Status: implemented
+
+[English](2026-08-06-user-bubbles-drop-the-branch-action.md) | 中文
+
+## 问题
+
+每个 user 气泡和已消费的 steering（中途引导）气泡都渲染分支控件，受[已完成轮次尾部决策](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md)的门禁约束。在这些气泡上，该门禁实际上是永久性的：开轮的 user 消息后面必然跟着本轮自己的节点，已消费的 steering 消息按构造就处在轮次中间，因此只有当轮次结束时该消息之后一个节点都没有——即在第一个模型事件之前就取消——控件才可能启用。读者因此看到一个永远不会启用的控件，tooltip 许诺的是这个按钮到达不了的状态。这个操作入口本身也有误导：在消息 seq 处 fork 会切在所在轮次的 `turn/end`，"在我的消息处分支"实际会把下方的回答一并带走，与在自己气泡上看到分支时"分叉重问"的直觉预期恰好相反。
+
+## 决策
+
+user 与 steering 气泡不再渲染分支操作。`MessageItem` 移除其 fork props，`PendingSteeringBubble` 移除其 `showBranch` 特例，`messageBranchSeqs` 收窄为 `assistantBranchSeqs`：只有已完成轮次的 transcript 尾部、且该尾部是本轮自己的带 text 内容 assistant 节点才可 fork。分支入口只存在于已定稿的回答之下。
+
+含有 steer 的轮次的 fork 点保持不变：fork 是切在 `turn/end` 上的日志前缀，steer 是子会话必须继承的模型可见历史，因此被引导过的轮次的已定稿回答与其他轮次一样可以 fork。assistant 侧的门禁及其可见但不可用的呈现也保持不变——在回答之下，不可用是一个短暂且可到达的状态（当前尾部被后续工具行或错误行占据），这正是 tooltip 的用武之地。
+
+## 考虑过的替代方案
+
+**仅在不可用时隐藏消息气泡上的控件。** 否决：它保住了那个几乎不可达的启用场景，代价是图标只在轮次尚未产出任何东西就中止时才出现在自己的气泡上，这种不一致不值得为它服务的场景付出。
+
+**保留可见但不可用的控件（现状）。** 否决：[已完成轮次尾部决策](../bug-fix/2026-08-02-message-fork-actions-require-completed-turn-tail.md)选择可见，是为了让 tooltip 解释一个读者可以到达的边界；在 user 与 steering 气泡上这个边界实际不可达，解释文本是在为一个不该存在于此的控件打补丁。
+
+**在 user 气泡上采用切在消息之前的分支语义。** 不在本次范围内：从自己的提示词重问需要切在消息之前并预填输入框，是另一个 Host 操作。移除当前控件恰好为这样的功能留出位置，而不是让语义相反的控件占着它。
+
+## 后果
+
+唯一的 fork 入口是已定稿回答下方启用的分支控件。在任何节点跟上其消息之前就被取消的轮次失去了它唯一的入口，从此没有 fork 点，与尾部是无内容 interrupted 节点的轮次一致。`apps/web` 的 aria golden 全部移除 user 气泡的禁用分支行及其隐藏说明文本。包测试钉住：user 与 steering 气泡不渲染分支控件，steering 作为尾部的轮次让叙述节点的控件保持不可用。
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/proposed/architecture/2026-07-27-session-projection-and-command-log.md
-2026-07-27-session-projection-and-command-log.md: 6a073c956c27bbfc65cff2d4f44ca12023df0cd5
-2026-07-27-session-projection-and-command-log.zh.md: a22ebe57811339a0e583ae00909e60482ddb57b1
+2026-07-27-session-projection-and-command-log.md: 789e79f2ecab1a9f3ac717df86059150ed2d4da9
+2026-07-27-session-projection-and-command-log.zh.md: 4d680b37f5d49a243447542706c8b7ced8d80e2a
@@ -56,6 +56,10 @@ declare module 'cordis' {
 - Registration is an effect (disposer with the fiber): an unloaded plugin's key disappears from subsequent responses and the client reads it as capability absence — HMR semantics for free. Duplicate keys throw. Domain plugins register under `ctx.inject(['sessionProjections'], …)` so headless assemblies without the registry stay unaffected.
 - The package owns `./invariant` (every served key has a live registration).

+### Shipped consumer: the subagent identity unit
+
+The registry's two read faces already serve a shipped consumer beyond this RFC's wire plan: [subagent list identity via the projection unit](../../implemented/architecture/2026-08-06-subagent-list-identity-projection.md) registers a `subagent` unit — the durable mode/label identity folded last-wins from `subagent/descriptor` — and `SubagentService.listChildren` reads it through `snapshot()` for a live child (the watermark cache, zero log reads) and `restore({}, events, 0)` over one persistence inspection for a cold one. The registry contract is unchanged: no failure channel and no new read face — a unit never throws, an absent value is the signal, and how absence renders is that consumer's decision.
+
 ### Wire: projections block on the history tail page

 ```ts ignore-check
@@ -56,6 +56,10 @@ declare module 'cordis' {
 - 注册是 effect（disposer 随 fiber 走）：插件卸载后其 key 从后续响应中消失，客户端将其读作能力缺失——HMR（热模块替换）语义随之自动成立。key 重复直接 throw。领域插件在 `ctx.inject(['sessionProjections'], …)` 下注册，因此不带注册表的 headless 组装完全不受影响。
 - 该包拥有 `./invariant`（每个被服务的 key 都有一条存活的注册）。

+### 已交付的消费方：subagent 身份单元
+
+注册表的两处读面已经服务于本 RFC 协议计划之外的一个已交付消费方：[subagent 列表经投影单元读取身份](../../implemented/architecture/2026-08-06-subagent-list-identity-projection.md)注册了 `subagent` 单元——从 `subagent/descriptor` 以 last-wins 折叠出的持久 mode/label 身份——`SubagentService.listChildren` 对 live child 经 `snapshot()` 读取（水位缓存，零日志读），对 cold child 经一次持久化检查上的 `restore({}, events, 0)` 读取。注册表契约不变：没有失败通道、没有新读面——单元永不抛错，值缺席本身就是信号，缺席如何呈现是该消费方自己的决定。
+
 ### 协议层：历史尾页上的 projections 块

 ```ts ignore-check
@@ -40,6 +40,8 @@ flowchart LR
  cfg --> plugin_dsh_base_session_persistence_jsonl
  plugin_dsh_base_session_query_sqlite["session-query-sqlite<br/>@deepseek-ai/dsh-session-query-sqlite"]
  cfg --> plugin_dsh_base_session_query_sqlite
+  plugin_dsh_base_session_projection["session-projection<br/>@deepseek-ai/dsh-session-projection"]
+  cfg --> plugin_dsh_base_session_projection
  plugin_dsh_base_telemetry_otel["telemetry-otel<br/>@deepseek-ai/dsh-session-telemetry-otel"]
  cfg --> plugin_dsh_base_telemetry_otel
  plugin_dsh_base_subprocess["subprocess<br/>@deepseek-ai/dsh-subprocess-local"]
@@ -166,6 +168,7 @@ flowchart LR
 | `llm-pi-ai` | `@deepseek-ai/dsh-llm-pi-ai` |
 | `session-persistence-jsonl` | `@deepseek-ai/dsh-session-persistence-jsonl` |
 | `session-query-sqlite` | `@deepseek-ai/dsh-session-query-sqlite` |
+| `session-projection` | `@deepseek-ai/dsh-session-projection` |
 | `telemetry-otel` | `@deepseek-ai/dsh-session-telemetry-otel` |
 | `subprocess` | `@deepseek-ai/dsh-subprocess-local` |
 | `sandbox` | `@deepseek-ai/dsh-sandbox-local` |
@@ -0,0 +1,133 @@
+// Shared scaffolding for the assembled-jsdom snapshots: the real built
+// `packages/client/*/lib/client.js` artifacts booted through AppWebEntry's
+// ModuleLoader path (loadBundle) against the keyless FixtureApiClient
+// transport. Every file that mounts this graph needs the same boot entry list,
+// the same bundle map, the same jsdom globals, and the same mount call, and
+// differs only in what it asserts afterwards, so the scaffolding lives here.
+//
+// Keyless and deterministic: the fixture is the fake server, so nothing here
+// reaches a model or the network.
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { act, cleanup } from '@testing-library/react'
+import { afterEach, beforeEach, vi } from 'vitest'
+import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
+import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+
+/** Boot entries for the minimal assembled graph, each carrying the workspace directory its bundle is read from. */
+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
+
+/**
+ * Register the per-test jsdom setup and teardown the assembled boot needs:
+ * English pinned before boot so role/text locators stay deterministic across
+ * localized component migrations (the newEnglishPage e2e convention), the
+ * observers and frame callbacks jsdom lacks, and a full reset of the document,
+ * the boot globals, and the injected plugin styles afterwards.
+ */
+export function installAssembledBootEnv(): void {
+  beforeEach(() => {
+    localStorage.clear()
+    localStorage.setItem('dsh.locale', 'en')
+    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__
+    document.body.innerHTML = ''
+    document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    document.title = ''
+    history.replaceState(null, '', '/')
+    vi.unstubAllGlobals()
+  })
+}
+
+/**
+ * Mount the assembled application on the fixture transport; the teardown
+ * registered by installAssembledBootEnv disposes it.
+ */
+export function mountAssembledApp(): 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, {
+      loadBundle: async (url) => {
+        const code = bundles.get(url)
+        if (code === undefined) throw new Error(`missing built bundle ${url}`)
+        ;(0, eval)(code)
+      },
+    })
+    void entry.run()
+    unmount = () => { entry.dispose() }
+  })
+}
+
+/**
+ * Match a CSS-module class by its logical name.
+ * Module class names carry a per-build hash in one of two schemes —
+ * ui-primitives emits `_<name>_<hash>` (name bounded by underscores),
+ * ui-conversation emits `<hash>_<name>` (name at the end) — and a longer name
+ * containing this one must not match (`line` must not hit `lineNumber`).
+ * @param el - element whose class list is inspected.
+ * @param name - logical (unhashed) module class name.
+ * @returns whether the element carries that module class.
+ */
+export function hasClass(el: Element, name: string): boolean {
+  return [...el.classList].some(cls => cls === name || cls.endsWith(`_${name}`) || cls.startsWith(`_${name}_`) || cls.includes(`_${name}_`))
+}
+
+/**
+ * Whether this run rewrites its golden instead of comparing against it, set by
+ * the snapshot gate's `DSH_SNAPSHOT` mode (`record` re-runs the scenarios from
+ * scratch, `refresh` re-derives the expected text from the existing ones).
+ */
+export const REFRESHING_GOLDEN = process.env.DSH_SNAPSHOT === 'record' || process.env.DSH_SNAPSHOT === 'refresh'
@@ -1,105 +1,23 @@
 // @vitest-environment jsdom
-// The built-bundle boot smoke: the ONE assembled-jsdom test that loads the
-// real `packages/client/*/lib/client.js` artifacts through AppWebEntry's
-// ModuleLoader path (loadBundle) and proves the boot graph
-// assembles — staged activation across the immediately tier and the inject
-// layers, per-plugin CSS injection, and a rendered journey reaching chat
-// content from the keyless FixtureApiClient transport.
+// The built-bundle boot smoke: the assembled-jsdom test that owns the boot
+// graph itself. Other files share the same scaffolding (assembled-boot.ts) to
+// reach a surface only the built bundles expose; this one asserts that the
+// graph assembles at all — staged activation across the immediately tier and
+// the inject layers, per-plugin CSS injection, and a rendered journey reaching
+// chat content from the keyless FixtureApiClient transport.
 //
 // Component behavior remains owned by per-package suites (SlotTestRuntime
 // benches over src). This smoke additionally pins the resident interaction
 // fixture's cross-plugin projection because only the built connection/runtime/
 // workspace graph can prove that transport-to-row path end to end.
-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'
+import { act, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { expect, it } from 'vitest'
+import { installAssembledBootEnv, mountAssembledApp } from './assembled-boot.ts'

-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()
-  // English pinned before boot: role/text locators stay deterministic across
-  // localized component migrations (the newEnglishPage e2e convention).
-  localStorage.setItem('dsh.locale', 'en')
-  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__
-  document.body.innerHTML = ''
-  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
-  document.title = ''
-  history.replaceState(null, '', '/')
-  vi.unstubAllGlobals()
-})
+installAssembledBootEnv()

 it('boots the built plugin graph and renders a fixture session end to end', async () => {
-  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, {
-      loadBundle: async (url) => {
-        const code = bundles.get(url)
-        if (code === undefined) throw new Error(`missing built bundle ${url}`)
-        ;(0, eval)(code)
-      },
-    })
-    void entry.run()
-    unmount = () => { entry.dispose() }
-  })
+  mountAssembledApp()

  // The sidebar renders from the boot graph: every inject layer activated.
  const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
@@ -0,0 +1,339 @@
+// Web e2e scenario: the conversation column scrolls on one axis only, as the
+// browser actually lays it out. The reported symptom was a horizontal
+// scrollbar under the whole center column once the window (or the sidebar
+// drag) narrowed it — the hero's decorative backdrop ellipse bleeding past the
+// column and becoming user-scrollable.
+//
+// The bleed is by construction and stays: `.heroGlow` is sized 1051/776 of the
+// hero box (ConversationRoot.module.css) so the blur scales with the input
+// card. What changed is the scroll container: `[data-conversation-scroll]`
+// scrolls vertically, and a box that scrolls in one axis computes the other
+// axis's initial `visible` to `auto`, so the bleed came back as a bar. The
+// fix states `overflow-x: hidden` there.
+//
+// Only a real engine reports that pair — the bleed and the resulting scroll
+// range — so the scenario sweeps viewport widths that bracket the glow's
+// width and asserts both at each stop. Asserting no horizontal scroll alone
+// would go vacuous the moment the glow stopped bleeding for an unrelated
+// reason, which is why each stop also records whether it bleeds; the wide stop
+// is the control where it does not.
+//
+// Zero model calls: the hero is the boot state, so nothing is seeded and no
+// replay row mounts. A stray stream would fail loud with NO_ADAPTER.
+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 {
+  assertFixtureInventory, compareOrRefreshGolden, launchWebScaffold, watchConsole, webSnapshotMode,
+  type WebScaffold,
+} from './scaffold.ts'
+import { newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/conversation-column-overflow', import.meta.url))
+/**
+ * Committed golden of the one-axis relation at every stop. It records
+ * relations and booleans, never absolute coordinates: the column width follows
+ * the viewport and the sidebar, and a golden carrying pixels would document the
+ * platform instead of the change.
+ */
+const GEOMETRY_EXPECTED = join(SNAPSHOT_DIR, 'geometry.expected.md')
+const MODE = webSnapshotMode()
+/** Narrow sweep stop where the mutation control retains overflow across scrollbar implementations. */
+const CONTROL_VIEWPORT = 600
+/**
+ * Viewport widths bracketing the glow: the narrow stops retain the reported
+ * bleed while the widest stop proves the relation can also be false.
+ */
+const WIDTHS = [1680, 1200, 1000, 800, CONTROL_VIEWPORT]
+/** Element id of the mutation control's injected sheet, so the test can take it back out. */
+const CONTROL_STYLE_ID = 'dsh-column-overflow-control'
+/** Horizontal wheel delta per gesture; must exceed the widest bleed the sweep can produce. */
+const WHEEL_DELTA = 300
+
+/** One viewport stop: whether the glow bleeds past the column, and whether that bleed scrolls. */
+interface ColumnMetrics {
+  /** Viewport width the stop was measured at. */
+  width: number
+  /** The column's content width. Not committed to the golden — it is what settles after a resize, and what the sweep waits on. */
+  columnWidth: number
+  /** Resolved `overflow-x` on the conversation scroll container. */
+  overflowX: string
+  /** True when the glow's box reaches past the column's content edge — the condition the fix has to survive. */
+  glowBleeds: boolean
+  /**
+   * `scrollWidth - clientWidth`. Deliberately NOT the assertion: `hidden` and
+   * `auto` both report the same value, because `hidden` clips the bleed rather
+   * than reflowing it away. Recorded because it is the vacuity guard in
+   * numbers — it must stay positive at the narrow stops, or the scenario has
+   * stopped reproducing the situation the fix is for.
+   */
+  bleedRange: number
+  /** True when the column still scrolls vertically — the axis the fix must not take away. */
+  scrollsVertically: boolean
+}
+
+/**
+ * Measure the conversation column at the page's current viewport.
+ * @param page - the page under test.
+ * @param width - the viewport width already applied, recorded with the reading.
+ * @returns the stop's overflow relations.
+ */
+function measureColumn(page: Page, width: number): Promise<ColumnMetrics> {
+  return page.evaluate((viewportWidth) => {
+    const scroller = document.querySelector<HTMLElement>('[data-conversation-scroll]')
+    if (scroller === null) throw new Error('conversation scroll container not in the DOM')
+    const glow = scroller.querySelector<SVGElement>('[class*="heroGlow"]')
+    if (glow === null) throw new Error('hero glow not in the DOM — the boot state is not the hero')
+    const box = scroller.getBoundingClientRect()
+    const glowBox = glow.getBoundingClientRect()
+    return {
+      width: viewportWidth,
+      columnWidth: scroller.clientWidth,
+      overflowX: getComputedStyle(scroller).overflowX,
+      // `clientWidth` is the content edge, which is what the scrollable
+      // overflow region is measured against; either side counts as a bleed,
+      // though only the right one can produce a bar in this writing mode.
+      glowBleeds: glowBox.right > box.left + scroller.clientWidth + 0.5 || glowBox.left < box.left - 0.5,
+      bleedRange: scroller.scrollWidth - scroller.clientWidth,
+      scrollsVertically: getComputedStyle(scroller).overflowY === 'auto',
+    }
+  }, width)
+}
+
+/**
+ * Scroll the column sideways the way a user would and report where it landed.
+ *
+ * This is the one signal that separates the two states, and it is why the
+ * scenario needs a real engine: `overflow-x: hidden` leaves the box
+ * programmatically scrollable and leaves `scrollWidth` untouched, so every
+ * property reading agrees across the fix. Only refusing an actual input event
+ * differs — measured at the 1200px stop, the shipped column stays at 0 while
+ * the same page with `overflow-x: auto` forced on lands at its scroll boundary.
+ * @param page - the page under test.
+ * @returns `scrollLeft` after one horizontal wheel over the column.
+ */
+async function wheelHorizontally(page: Page): Promise<number> {
+  const origin = await page.evaluate(() => {
+    const scroller = document.querySelector<HTMLElement>('[data-conversation-scroll]')
+    if (scroller === null) throw new Error('conversation scroll container not in the DOM')
+    // Start from the origin so the reading is this gesture's own effect.
+    scroller.scrollLeft = 0
+    const box = scroller.getBoundingClientRect()
+    // Near the top of the column, clear of the centered hero card: the wheel
+    // must reach the column, not a nested scroller the composer owns.
+    return { x: box.left + box.width / 2, y: box.top + 60 }
+  })
+  await page.mouse.move(origin.x, origin.y)
+  await page.mouse.wheel(WHEEL_DELTA, 0)
+  // A fixed settle, then two frames. Polling for a settled value cannot be
+  // used here — the value under test is 0, which a poll starting at 0 accepts
+  // before the gesture has had any chance to move it — so the wait is
+  // generous enough to cover a smooth-scroll animation on any engine the lane
+  // runs on. The timing is identical on both sides of the mutation control
+  // below, which is what makes a 0 reading evidence rather than a race won.
+  await page.waitForTimeout(400)
+  return page.evaluate(() => new Promise<number>((resolve) => {
+    requestAnimationFrame(() => {
+      requestAnimationFrame(() => {
+        resolve(document.querySelector<HTMLElement>('[data-conversation-scroll]')?.scrollLeft ?? -1)
+      })
+    })
+  }))
+}
+
+/**
+ * Measure the positive horizontal scroll boundary without changing the
+ * shipped overflow mode. This is distinct from `scrollWidth - clientWidth`
+ * when a stable scrollbar gutter leaves part of the overflow on the negative
+ * side of the scroll origin.
+ * @param page - the page under test.
+ * @returns the greatest positive `scrollLeft` reachable by the control gesture.
+ */
+async function horizontalScrollLimit(page: Page): Promise<number> {
+  return page.evaluate((delta) => {
+    const scroller = document.querySelector<HTMLElement>('[data-conversation-scroll]')
+    if (scroller === null) throw new Error('conversation scroll container not in the DOM')
+    const previousScrollBehavior = scroller.style.scrollBehavior
+    scroller.style.scrollBehavior = 'auto'
+    scroller.scrollLeft = delta
+    const limit = scroller.scrollLeft
+    scroller.scrollLeft = 0
+    scroller.style.scrollBehavior = previousScrollBehavior
+    return limit
+  }, WHEEL_DELTA)
+}
+
+/** A stop's readings plus where a horizontal wheel over it landed. */
+type ColumnStop = ColumnMetrics & {
+  /** `scrollLeft` after one horizontal wheel: the user-facing claim, 0 at every stop. */
+  scrollLeftAfterWheel: number
+}
+
+/**
+ * Render the golden body: one line per stop, relations only.
+ *
+ * Absolute pixels are deliberately absent apart from `scrollLeftAfterWheel`,
+ * which the fix pins to 0 by construction. The bleed is recorded as a boolean
+ * rather than its width, so the golden survives any platform whose column
+ * lands a pixel off — a fixture that has to be re-recorded per platform
+ * documents the platform, not the change.
+ * @param stops - the measured stops, in sweep order.
+ * @returns the golden body, without a trailing newline.
+ */
+function renderGeometry(stops: ColumnStop[]): string {
+  return [
+    '# Conversation column horizontal overflow',
+    '',
+    '| viewport | overflow-x | glow bleeds past the column | scrollLeft after a horizontal wheel | scrolls vertically |',
+    '| --- | --- | --- | --- | --- |',
+    ...stops.map(stop => `| ${String(stop.width)}px | ${stop.overflowX} | ${String(stop.glowBleeds)} `
+      + `| ${String(stop.scrollLeftAfterWheel)}px | ${String(stop.scrollsVertically)} |`),
+  ].join('\n')
+}
+
+describe('web e2e: the conversation column scrolls on one axis', () => {
+  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 newEnglishPage(browser, 900)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[data-conversation-scroll] [class*="heroGlow"]', { timeout: 30_000 })
+  }, 180_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  /**
+   * Resize to a viewport and read the column once its width stops moving.
+   *
+   * The glow rides the hero box, which rides the column, and the frame eases
+   * its column tracks over `--ds-transition-duration-slow`: reading straight
+   * after a resize can report the previous viewport's relation, or a width
+   * caught mid-transition.
+   * @param width - viewport width to settle at.
+   * @returns the column's readings at that width.
+   */
+  const settleAt = async (width: number): Promise<ColumnMetrics> => {
+    await page.setViewportSize({ width, height: 900 })
+    let previous = -1
+    await expect.poll(async () => {
+      const current = (await measureColumn(page, width)).columnWidth
+      const settled = current === previous
+      previous = current
+      return settled
+    }, { timeout: 10_000 }).toBe(true)
+    return measureColumn(page, width)
+  }
+
+  /**
+   * Sweep the stops once per run and hand the SAME readings to every assertion
+   * below, so the golden and the assertions describe one measurement instead of
+   * two runs that could disagree. Memoized rather than re-run per test: the
+   * gestures below move the viewport, and a second sweep would be a second
+   * chance for a resize to settle differently.
+   * @returns the stops in {@link WIDTHS} order.
+   */
+  let swept: Promise<ColumnStop[]> | undefined
+  const sweep = (): Promise<ColumnStop[]> => {
+    swept ??= (async () => {
+      const stops: ColumnStop[] = []
+      for (const width of WIDTHS) {
+        stops.push({ ...await settleAt(width), scrollLeftAfterWheel: await wheelHorizontally(page) })
+      }
+      return stops
+    })()
+    return swept
+  }
+
+  it('never scrolls horizontally, at any width the glow bleeds past', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-conversation-column-overflow'))
+    const stops = await sweep()
+    // The vacuity guard, in two halves: the glow has to reach past the column
+    // at the narrow stops, and that reach has to still register as scrollable
+    // overflow. Without both, the claim below holds for free.
+    expect(stops.filter(stop => stop.glowBleeds).map(stop => stop.width)).toEqual([
+      1200, 1000, 800, CONTROL_VIEWPORT,
+    ])
+    for (const stop of stops.filter(stop => stop.glowBleeds)) {
+      expect(stop.bleedRange, `viewport ${String(stop.width)}`).toBeGreaterThan(0)
+    }
+    for (const stop of stops) {
+      expect(stop.overflowX, `viewport ${String(stop.width)}`).toBe('hidden')
+      // The reported symptom, stated directly: a horizontal wheel over the
+      // column moves nothing, at every stop.
+      expect(stop.scrollLeftAfterWheel, `viewport ${String(stop.width)}`).toBe(0)
+      // The axis the column is a scroller for must survive the fix.
+      expect(stop.scrollsVertically, `viewport ${String(stop.width)}`).toBe(true)
+    }
+    expect(tripwire.pageErrors).toEqual([])
+  }, 120_000)
+
+  it('reports the pre-fix state when the axis is opened back up', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-conversation-column-overflow-control'))
+    // The mutation control, run in the page rather than against a second
+    // build: it restores exactly what the fix changed — the initial `visible`
+    // that a one-axis scroller computes to `auto` — and shows the same gesture,
+    // at the same timing, carrying the column to its positive scroll boundary.
+    // Without it a `scrollLeft` of 0 could equally mean the wheel never arrived.
+    // Injected with an id rather than through `addStyleTag`, so the teardown
+    // below can take the sheet out again by selector: it must not outlive this
+    // test, or the golden ends up reading the control.
+    await page.evaluate((id: string) => {
+      const sheet = document.createElement('style')
+      sheet.id = id
+      sheet.textContent = '[data-conversation-scroll] { overflow-x: auto !important; }'
+      document.head.append(sheet)
+    }, CONTROL_STYLE_ID)
+    try {
+      // Resolve the mutated layout at the narrowest sweep stop. At wider stops,
+      // a classic scrollbar can change the available box enough to remove the
+      // overflow that the control is meant to expose.
+      const before = await settleAt(CONTROL_VIEWPORT)
+      expect(before.overflowX).toBe('auto')
+      expect(before.bleedRange).toBeGreaterThan(0)
+      const scrollLimit = await horizontalScrollLimit(page)
+      // The control has a reachable horizontal range, and the gesture exceeds
+      // it so the equality below proves that the wheel reached the far edge.
+      expect(scrollLimit).toBeGreaterThan(0)
+      expect(scrollLimit).toBeLessThan(WHEEL_DELTA)
+      // Rounded: `scrollLeft` is fractional under a fractional layout while
+      // the claim is that the column reached the positive boundary, not that
+      // two engines agree on a sub-pixel.
+      expect(Math.round(await wheelHorizontally(page))).toBe(Math.round(scrollLimit))
+    } finally {
+      await page.evaluate((id: string) => {
+        document.getElementById(id)?.remove()
+      }, CONTROL_STYLE_ID)
+    }
+    // The override is gone and the shipped state is back: the later goldens
+    // read the product, not the control.
+    expect((await settleAt(CONTROL_VIEWPORT)).overflowX).toBe('hidden')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 120_000)
+
+  it('matches the committed column-overflow golden', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-conversation-column-overflow-golden'))
+    await compareOrRefreshGolden(GEOMETRY_EXPECTED, renderGeometry(await sweep()), MODE)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 120_000)
+
+  it('commits exactly the fixtures it reads', async () => {
+    // No model calls, so no replay log: the golden is the whole inventory.
+    await assertFixtureInventory(SNAPSHOT_DIR, ['geometry.expected.md'])
+  })
+
+  it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', () => {
+    expect(tripwire.warnings).toEqual([])
+    expect(tripwire.pageErrors).toEqual([])
+  })
+})
@@ -0,0 +1,168 @@
+// Keyless replay of a real two-round Goal run. Each autonomous round ends as
+// its own turn, so the first answer must keep its IconActions when Goal opens
+// round two and the final answer must own a second, distinct action row.
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent, SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-goal'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/goal-multi-turn-actions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const OVERRIDE = join(SNAPSHOT_DIR, 'replay.override.json')
+const UI_EXPECTED = join(SNAPSHOT_DIR, 'ui.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = '做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的'
+const COMMAND = `/goal ${PROMPT}`
+
+const PACKAGE_FILES: Readonly<Record<string, string>> = {
+  'packages/client/ui-conversation/README.md': '# UI conversation\n',
+  'packages/client/ui-conversation/package.json': '{"name":"@deepseek-ai/dsh-client-ui-conversation"}\n',
+  'packages/client/ui-conversation/src/client.ts': 'export {}\n',
+  'packages/client/ui-conversation/tests/chat-view.spec.tsx': 'export {}\n',
+  'packages/context/session-reference/README.md': '# Session reference\n',
+  'packages/context/session-reference/package.json': '{"name":"@deepseek-ai/dsh-session-reference"}\n',
+  'packages/context/session-reference/src/index.ts': 'export {}\n',
+  'packages/context/session-reference/src/uri.ts': 'export {}\n',
+  'packages/context/session-reference/tests/session-reference.spec.ts': 'export {}\n',
+  'packages/llm/token-meter/README.md': '# Token meter\n',
+  'packages/llm/token-meter/package.json': '{"name":"@deepseek-ai/dsh-token-meter"}\n',
+  'packages/llm/token-meter/src/index.ts': 'export {}\n',
+  'packages/llm/token-meter/tests/token-meter.spec.ts': 'export {}\n',
+  'packages/skill/skill-local/README.md': '# Local skill provider\n',
+  'packages/skill/skill-local/package.json': '{"name":"@deepseek-ai/dsh-skill-local"}\n',
+  'packages/skill/skill-local/src/index.ts': 'export {}\n',
+  'packages/skill/skill-local/src/invariant.ts': 'export {}\n',
+  'packages/skill/skill-local/tests/skill-local.spec.ts': 'export {}\n',
+}
+
+/** Materialize a stable package inventory inside the isolated session workspace. */
+async function seedPackageInventory(workspaceRoot: string): Promise<void> {
+  for (const [relativePath, content] of Object.entries(PACKAGE_FILES)) {
+    const path = join(workspaceRoot, 'workspace', relativePath)
+    await mkdir(dirname(path), { recursive: true })
+    await writeFile(path, content)
+  }
+}
+
+/** Await exactly the requested number of durable turn ends, then flush the session. */
+function whenTurnsSettled(scaffold: WebScaffold, count: number, timeoutMs: number): Promise<SessionId> {
+  return new Promise<SessionId>((resolve, reject) => {
+    let completed = 0
+    const timer = setTimeout(() => {
+      off()
+      reject(new Error(`only ${completed}/${count} Goal turns ended within ${timeoutMs}ms`))
+    }, timeoutMs)
+    const off = scaffold.ctx.on('session/event', (session, event: SessionEvent) => {
+      if (event.type !== 'turn/end') return
+      completed += 1
+      if (completed !== count) return
+      clearTimeout(timer)
+      off()
+      scaffold.ctx.sessions.flush(session).then(() => { resolve(session.id) }, reject)
+    })
+  })
+}
+
+/** Goal-owned round numbers in durable user-message order. */
+function goalRounds(events: readonly SessionEvent[]): number[] {
+  return events.flatMap(event => event.type === 'user/message' && event.data.source.kind === 'goal'
+    ? [event.data.source.round]
+    : [])
+}
+
+/** Objective written by each durable Goal creation. */
+function createdObjectives(events: readonly SessionEvent[]): string[] {
+  return events.flatMap(event => event.type === 'goal/change' && event.data.operation === 'create'
+    ? [event.data.goal.objective]
+    : [])
+}
+
+describe('web e2e: Goal keeps one assistant action row per completed turn', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+
+  afterEach(async () => {
+    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 (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'goal-multi-turn-actions teardown failed')
+  })
+
+  /** Boot the real Web composition and connect a fresh package fixture workspace. */
+  async function launch(): Promise<void> {
+    sessionEvents = []
+    scaffold = await launchWebScaffold(
+      MODE === 'record' ? {} : { replayFixture: FIXTURE, replayOverride: OVERRIDE },
+    )
+    await seedPackageInventory(scaffold.workspaceCwd)
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page, scaffold.workspaceCwd)
+  }
+
+  /** Submit the Goal command after arming the two-turn barrier. */
+  async function runGoal(timeoutMs: number): Promise<SessionId> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = whenTurnsSettled(scaffold!, 2, timeoutMs)
+    await input.fill(COMMAND)
+    await input.press('Enter')
+    return settled
+  }
+
+  it.skipIf(MODE !== 'record')('records the two-round Goal through the real model', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions-record'))
+    const sessionId = await runGoal(360_000)
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 380_000)
+
+  it.skipIf(MODE === 'record')('keeps actions on both completed Goal turn tails', async () => {
+    const fixtureEvents = parseSessionLog(await readFile(FIXTURE, 'utf8'))
+    expect(createdObjectives(fixtureEvents)).toEqual([PROMPT])
+    expect(goalRounds(fixtureEvents)).toEqual([1, 2])
+
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions'))
+    await runGoal(120_000)
+
+    expect(sessionEvents.flatMap(event => event.type === 'turn/end' ? [event.data.turn] : []))
+      .toEqual([1, 2])
+    expect(goalRounds(sessionEvents)).toEqual([1, 2])
+    const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
+    await expect.poll(() => branchButtons.count(), { timeout: 15_000 }).toBe(2)
+    expect(await branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))))
+      .toEqual([null, null])
+    await branchButtons.last().focus()
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 140_000)
+
+  it.skipIf(MODE === 'record')('keeps a closed fixture inventory', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['replay.override.json', 'session.jsonl', 'ui.expected.md'])
+  })
+})
@@ -107,17 +107,17 @@ describe('web e2e: message IconActions and clocks on settled history', () => {
    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBe(1)

    // Focus-reveal the footers (hover:hover keeps them opacity-hidden until
-    // hover/focus-within). Every durable message footer keeps branch visible,
-    // but only the final assistant at a completed transcript tail enables it.
+    // hover/focus-within). Branch renders only under assistant answers — user
+    // bubbles carry none — and only a completed transcript tail enables it.
    const copyButtons = page.getByRole('button', { name: 'Copy' })
    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(4)
    await copyButtons.first().focus()
    const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
-    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(4)
+    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(2)
    await expect.poll(
      () => branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))),
      { timeout: 5_000 },
-    ).toEqual(['true', 'true', 'true', null])
+    ).toEqual(['true', null])
    await branchButtons.first().focus()
    await expect.poll(() => page.getByRole('tooltip').textContent(), { timeout: 5_000 })
      .toBe('Available only on the last message of a completed turn')
@@ -1,15 +1,17 @@
 // Web e2e scenario: the Models settings page end to end through the real
-// wire — the add card offers the dormant pi-ai catalog, typing an API key
+// wire — the add card offers the dormant pi-ai catalog, a blank key saves a
+// reference-free profile for provider-native auth, and typing an API key later
 // stores it write-only under the derived reference (`MINIMAX_CN_API_KEY`)
-// while the settings document records only that reference; the saved row
-// appears after the route topology invalidation without presenting liveness
-// as provider status. The customized-settings fold writes the curated
+// while the settings document records only that reference. Each saved row
+// appears after route topology invalidation without presenting liveness as
+// provider status. The customized-settings fold writes the curated
 // reasoning field as a merge patch. Zero model calls: configuration is pure
 // settings/credentials/llm-domain traffic, so there is no fixture and a
 // stray stream would fail loud on the open seam. The provider under test is
 // minimax-cn so a developer's real ANTHROPIC/OPENAI environment keys can
-// never shadow the derived reference. Removing that row is guarded by the
-// localized provider-confirmation dialog before the unset reaches the wire.
+// never shadow the derived reference. The deletion dialog distinguishes a
+// reference-free profile from a page-managed key before the credential and
+// settings unsets reach the wire.
 import { readFile } from 'node:fs/promises'
 import { fileURLToPath } from 'node:url'
 import { join } from 'node:path'
@@ -25,6 +27,7 @@ import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/models-settings', import.meta.url))
 const EMPTY_EXPECTED = join(SNAPSHOT_DIR, 'empty.expected.md')
 const CONFIGURED_EXPECTED = join(SNAPSHOT_DIR, 'configured.expected.md')
+const NATIVE_DELETE_EXPECTED = join(SNAPSHOT_DIR, 'native-delete.expected.md')
 const DELETE_EXPECTED = join(SNAPSHOT_DIR, 'delete.expected.md')
 const MODE = webSnapshotMode()

@@ -70,34 +73,71 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    expect(options).toContain('anthropic')
    expect(options).toContain('minimax-cn')
    await pick.selectOption('minimax-cn')
-    await dialog.getByLabel('API 密钥').waitFor({ timeout: 10_000 })
+    await dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).waitFor({ timeout: 10_000 })
    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
    await compareOrRefreshGolden(EMPTY_EXPECTED, snapshot, MODE)
  }, 60_000)

-  it('stores the key under the derived reference and the route registers live', async () => {
+  it('saves a blank key as a reference-free provider-native profile', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-native-auth'))
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.getByRole('button', { name: '保存', exact: true }).click()
+    const row = dialog.getByText('minimax-cn', { exact: true }).first()
+    await row.waitFor({ timeout: 10_000 })
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
+    expect(await dialog.getByRole('img', { name: 'API 密钥已配置' }).count()).toBe(0)
+    expect(await dialog.getByRole('img', { name: 'API 密钥缺失' }).count()).toBe(0)
+    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
+    expect(document).toContain('minimax-cn: {}')
+    expect(document).not.toContain('MINIMAX_CN_API_KEY')
+  }, 60_000)
+
+  it('describes reference-free deletion without claiming a credential exists', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-native-delete'))
+    const settingsDialog = page.getByRole('dialog', { name: '设置' })
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    const deleteDialog = page.getByRole('dialog', { name: '删除 minimax-cn？' })
+    await deleteDialog.waitFor({ timeout: 10_000 })
+    const snapshot = await captureStableAria(
+      page,
+      '[role="dialog"][aria-label="删除 minimax-cn？"]',
+      scaffold.workspaceCwd,
+    )
+    await compareOrRefreshGolden(NATIVE_DELETE_EXPECTED, snapshot, MODE)
+    await deleteDialog.getByRole('button', { name: '取消', exact: true }).click()
+  }, 60_000)
+
+  it('stores the key under the derived reference and keeps the route live', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-add'))
    const dialog = page.getByRole('dialog', { name: '设置' })
-    await dialog.getByLabel('API 密钥').fill('sk-e2e-minimax')
+    await dialog.getByRole('button', { name: '编辑 minimax-cn' }).click()
+    await dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).fill('sk-e2e-minimax')
    await dialog.getByRole('button', { name: '保存', exact: true }).click()
    // The profile lands in settings.yaml with only the derived reference, the
    // key value lands in the harness home's .env, the dormant route
    // registers, and the topology frame invalidates the page into the row.
-    const row = dialog.getByText('minimax-cn', { exact: true }).first()
-    await row.waitFor({ timeout: 10_000 })
+    await expect.poll(
+      async () => dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).count(),
+      { timeout: 10_000 },
+    ).toBe(0)
+    await dialog.getByRole('img', { name: 'API 密钥已配置' }).waitFor({ timeout: 10_000 })
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
    expect(document).toContain('minimax-cn:')
    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
    expect(document).not.toContain('sk-e2e-minimax')
-    const stored = await readFile(join(scaffold.harnessHome, '.env'), 'utf8')
-    expect(stored).toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
+    const credentialFile = join(scaffold.harnessHome, '.env')
+    await expect.poll(
+      async () => readFile(credentialFile, 'utf8').catch(() => ''),
+      { timeout: 10_000 },
+    ).toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
    expect(await page.content()).not.toContain('sk-e2e-minimax')
  }, 60_000)

  it('applies a customized-settings field as a merge patch', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-customized'))
    const dialog = page.getByRole('dialog', { name: '设置' })
-    await dialog.getByRole('button', { name: '编辑' }).click()
+    await dialog.getByRole('button', { name: '编辑 minimax-cn' }).click()
    await dialog.getByText('自定义设置').click()
    const effort = dialog.getByLabel('推理强度')
    await effort.waitFor({ timeout: 10_000 })
@@ -106,6 +146,7 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    // The editor closes back to the row; the fold's write merged into the
    // stored profile beside the reference.
    await expect.poll(async () => dialog.getByLabel('推理强度').count(), { timeout: 10_000 }).toBe(0)
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
    expect(document).toContain('reasoning: high')
    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
@@ -114,32 +155,32 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    expect(tripwire.pageErrors).toEqual([])
  }, 60_000)

-  it('confirms provider deletion before removing its settings profile', async () => {
+  it('confirms an identified provider deletion before removing its profile and key', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-delete'))
    const settingsDialog = page.getByRole('dialog', { name: '设置' })
-    await settingsDialog.getByRole('button', { name: '删除', exact: true }).click()
-    const deleteDialog = page.getByRole('dialog', { name: '删除模型提供方？' })
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    const deleteDialog = page.getByRole('dialog', { name: '删除 minimax-cn？' })
    await deleteDialog.waitFor({ timeout: 10_000 })
    const snapshot = await captureStableAria(
      page,
-      '[role="dialog"][aria-label="删除模型提供方？"]',
+      '[role="dialog"][aria-label="删除 minimax-cn？"]',
      scaffold.workspaceCwd,
    )
    await compareOrRefreshGolden(DELETE_EXPECTED, snapshot, MODE)

    await deleteDialog.getByRole('button', { name: '取消', exact: true }).click()
    expect(await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')).toContain('minimax-cn:')
-    await settingsDialog.getByRole('button', { name: '删除', exact: true }).click()
-    await page.getByRole('dialog', { name: '删除模型提供方？' })
-      .getByRole('button', { name: '删除提供方', exact: true }).click()
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    await page.getByRole('dialog', { name: '删除 minimax-cn？' })
+      .getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
    await expect.poll(
      async () => readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8'),
      { timeout: 10_000 },
    ).not.toContain('minimax-cn:')
    expect(await readFile(join(scaffold.harnessHome, '.env'), 'utf8'))
-      .toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
+      .not.toContain('MINIMAX_CN_API_KEY')
    await expect.poll(
-      async () => page.getByRole('dialog', { name: '删除模型提供方？' }).count(),
+      async () => page.getByRole('dialog', { name: '删除 minimax-cn？' }).count(),
      { timeout: 10_000 },
    ).toBe(0)
    await page.keyboard.press('Escape')
@@ -147,6 +188,8 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
  }, 60_000)

  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
-    await assertFixtureInventory(SNAPSHOT_DIR, ['configured.expected.md', 'delete.expected.md', 'empty.expected.md'])
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'configured.expected.md', 'delete.expected.md', 'empty.expected.md', 'native-delete.expected.md',
+    ])
  })
 })
@@ -14,69 +14,19 @@
 // derivation over the result view, pinned at every render site by the
 // ui-conversation suite; here the fixture turn exercises the assembled card
 // shape and its cap.
-import { mkdirSync, readFileSync, writeFileSync } from 'node:fs'
+import { mkdirSync, writeFileSync } from 'node:fs'
 import { dirname, join } from 'node:path'
-import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
-import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+import { act, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { describe, expect, it } from 'vitest'
+import { hasClass, installAssembledBootEnv, mountAssembledApp, REFRESHING_GOLDEN } from './assembled-boot.ts'

 const EXPECTED = join(process.cwd(), 'apps/web/tests/snapshots/search-card/grep-card.expected.txt')
-const refreshing = process.env.DSH_SNAPSHOT === 'record' || process.env.DSH_SNAPSHOT === 'refresh'

-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
+installAssembledBootEnv()

 /** Normalize a rendered search card to a stable text shape: the kind, the banner
 *  summary, each file header (path + count), each visible match line, the expand
- *  control label, and the recovery footer. CSS-module class names carry a
- *  per-build hash in one of two schemes — ui-primitives emits `_<name>_<hash>`
- *  (name bounded by underscores), ui-conversation emits `<hash>_<name>` (name at
- *  the end). `hasClass` matches a module class by its logical name under either,
- *  without matching a longer name that contains it (`line` must not hit
- *  `lineNumber`). */
-function hasClass(el: Element, name: string): boolean {
-  return [...el.classList].some(cls => cls === name || cls.endsWith(`_${name}`) || cls.startsWith(`_${name}_`) || cls.includes(`_${name}_`))
-}
-
+ *  control label, and the recovery footer. */
 function cardShape(root: Element): string {
  const card = root.querySelector('[data-search]')
  if (card === null) return '<no search card>'
@@ -94,49 +44,9 @@ function cardShape(root: Element): string {
  return lines.join('\n')
 }

-beforeEach(() => {
-  localStorage.clear()
-  // English pinned before boot so the sidebar's role/text locators stay
-  // deterministic (the built-boot smoke's convention).
-  localStorage.setItem('dsh.locale', 'en')
-  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__
-  document.body.innerHTML = ''
-  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
-  document.title = ''
-  history.replaceState(null, '', '/')
-  vi.unstubAllGlobals()
-})
-
 describe('assembled search card', () => {
  it('renders the grep card, its truncation summary, and its capped head/tail slice from the built bundles', async () => {
-    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, {
-        loadBundle: async (url) => {
-          const code = bundles.get(url)
-          if (code === undefined) throw new Error(`missing built bundle ${url}`)
-          ;(0, eval)(code)
-        },
-      })
-      void entry.run()
-      unmount = () => { entry.dispose() }
-    })
+    mountAssembledApp()

    const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
    fireEvent.click(await within(tree).findByText('Fixture 历史会话'))
@@ -161,7 +71,7 @@ describe('assembled search card', () => {
      expect(grepRow.querySelector('[data-search]')).not.toBeNull()
    }, { timeout: 10_000 })
    const shape = cardShape(grepRow)
-    if (refreshing) {
+    if (REFRESHING_GOLDEN) {
      mkdirSync(dirname(EXPECTED), { recursive: true })
      writeFileSync(EXPECTED, shape)
    }
@@ -7,9 +7,6 @@
 - text: "Run two shell commands: wait for cancellation, then write skipped.txt. {{date}} {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: "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. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -2,7 +2,7 @@

 ## Wide viewport (1680px, card at its cap)

- Chat: scrollbar-gutter stable, overflow auto/auto
+- Chat: scrollbar-gutter stable, overflow hidden/auto
 - Chat scroller scrolls: true
 - Chat reserved band: 8px
 - Trajectory: scrollbar-gutter stable, overflow hidden/auto
@@ -14,7 +14,7 @@

 ## Narrow viewport (800px, card shrinking with the column)

- Chat: scrollbar-gutter stable, overflow auto/auto
+- Chat: scrollbar-gutter stable, overflow hidden/auto
 - Chat scroller scrolls: true
 - Chat reserved band: 8px
 - Trajectory: scrollbar-gutter stable, overflow hidden/auto
@@ -26,7 +26,7 @@

 ## Wide viewport, reservation removed in the page (control)

- Chat: scrollbar-gutter auto, overflow auto/auto
+- Chat: scrollbar-gutter auto, overflow hidden/auto
 - Chat scroller scrolls: true
 - Chat reserved band: 8px
 - Trajectory: scrollbar-gutter auto, overflow hidden/hidden
@@ -0,0 +1,9 @@
+# Conversation column horizontal overflow
+
+| viewport | overflow-x | glow bleeds past the column | scrollLeft after a horizontal wheel | scrolls vertically |
+| --- | --- | --- | --- | --- |
+| 1680px | hidden | false | 0px | true |
+| 1200px | hidden | true | 0px | true |
+| 1000px | hidden | true | 0px | true |
+| 800px | hidden | true | 0px | true |
+| 600px | hidden | true | 0px | true |
@@ -7,9 +7,6 @@
 - text: "Use only Cordis tools. First call cordis_inspect with what \"temporary\". Then call cordis_mount with this exact code: \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\". Read its returned id and call cordis_unmount with that exact id. After all three calls succeed, reply exactly CORDIS_UI_DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: "Use the bash tool to run exactly: echo WEB_E2E_OK. Then reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -0,0 +1,52 @@
+{
+  "patches": [
+    {
+      "at": 2,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "argumentsDelta": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "arguments": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 156, "outputTokens": 202, "cacheReadTokens": 8448, "reasoningTokens": 80 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 7,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "argumentsDelta": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "arguments": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 62, "outputTokens": 164, "cacheReadTokens": 9728, "reasoningTokens": 46 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 10,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "text" },
+          { "type": "text-delta", "index": 0, "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" },
+          { "type": "block-end", "index": 0, "block": { "type": "text", "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_goal_complete", "name": "update_goal", "argumentsDelta": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_goal_complete", "name": "update_goal", "arguments": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 132, "outputTokens": 157, "cacheReadTokens": 10368, "reasoningTokens": 44 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    }
+  ]
+}
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+{"type":"approval/policy","seq":2,"time":1786073817154,"data":{"policy":"ask"}}
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+{"type":"goal/change","seq":4,"time":1786073817206,"data":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"objective":"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的","phase":"active","maxGoalRounds":256},"roundsStarted":0,"createdAt":1786073817206,"updatedAt":1786073817206}}
+{"type":"command/done","seq":5,"time":1786073817207,"data":{"commandId":"cmd-fc52d8e6-1","kind":"success","text":"Goal created\nStatus: active\nObjective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\nRounds: 0/256\nActivation: armed\n\nCommands: /goal edit <objective>, /goal pause, /goal clear"}}
+{"type":"agent/inbox/spliced","seq":6,"time":1786073817217,"data":{"target":"next-turn","start":0,"inserted":[{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"}]}}
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+{"type":"agent/inbox/spliced","seq":8,"time":1786073817218,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":9,"time":1786073817223,"data":{"turn":1,"step":1}}
+{"type":"user/message","seq":10,"time":1786073817223,"data":{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"},"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":260,"time":1786073821014,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\"\n\nSo this is round 1 of 2. I need to output the file structure of a random package. Let me check the workspace to see if there's anything relevant — maybe there are packages installed or a specific context.\n\nLet me first check the current working directory and see what's there.\n\nThe instruction says: after finishing a turn, output the content directly and stop. So for this round, I should pick a random package and output its file structure. The system will open another turn for the second one.\n\nLet me look at the workspace to understand the environment."}}}}
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+{"type":"agent/inbox/spliced","seq":1745,"time":1786073844590,"data":{"target":"next-step","start":0,"inserted":[{"content":[{"type":"text","text":"<goal_complete>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nThe goal is marked complete and this autonomous run is ending. Write the closing message to the user now: state the outcome, summarize what was done and how it was verified, and point to the concrete results (files, commits, or other artifacts). Report only what earlier rounds and tool results in this session actually establish; when a detail is not in the session, say so instead of inventing it. Note anything the user should review or do next. Address the user directly. Do not call any more tools in this run; further work waits for the user's next instruction.\n</goal_complete>"}],"source":{"kind":"plugin","plugin":"tool-goal","form":"notice","summary":"complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"},"role":"user","id":"34261fc8-220c-40c0-819d-c9c0332bf965"}]}}
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+{"type":"agent/inbox/spliced","seq":1747,"time":1786073844591,"data":{"target":"next-step","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":1748,"time":1786073844598,"data":{"turn":2,"step":6}}
+{"type":"user/message","seq":1749,"time":1786073844598,"data":{"content":[{"type":"text","text":"<goal_complete>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nThe goal is marked complete and this autonomous run is ending. Write the closing message to the user now: state the outcome, summarize what was done and how it was verified, and point to the concrete results (files, commits, or other artifacts). Report only what earlier rounds and tool results in this session actually establish; when a detail is not in the session, say so instead of inventing it. Note anything the user should review or do next. Address the user directly. Do not call any more tools in this run; further work waits for the user's next instruction.\n</goal_complete>"}],"source":{"kind":"plugin","plugin":"tool-goal","form":"notice","summary":"complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"},"role":"user","id":"34261fc8-220c-40c0-819d-c9c0332bf965"},"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":2092,"time":1786073848306,"data":{"turn":2,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"两个 turn 都完成了 ✅\n\n**总结：**\n\n- **Turn 1** — 随机选中 `packages/context/session-reference`，输出了文件结构：\n  ```\n  session-reference/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   ├── index.ts\n  │   └── uri.ts\n  └── tests/\n      └── session-reference.spec.ts\n  ```\n- **Turn 2** — 随机选中 `packages/llm/token-meter`，输出了文件结构：\n  ```\n  token-meter/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   └── index.ts\n  └── tests/\n      └── token-meter.spec.ts\n  ```\n\n**验证方式：** 两个包的随机选择都通过 `python3 random.choice` 从工作区的 `packages/` 目录下实际枚举的 4 个候选包中抽取（`ui-conversation`、`session-reference`、`token-meter`、`skill-local`），文件结构则用 `find` 实际列出文件后整理输出，均已排除 `node_modules` 和 `.git`。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。\n\n**说明：** 本轮没有产生任何文件修改或提交——任务本身就是\"输出文件结构\"，所有产物都在上面的消息文本里。\n\n如果你还想看剩下两个包（`ui-conversation`、`skill-local`）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。"}}}}
+{"type":"assistant/chunk","seq":2093,"time":1786073848307,"data":{"turn":2,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":311,"outputTokens":348,"cacheReadTokens":10624,"reasoningTokens":0}}}}
+{"type":"assistant/chunk","seq":2094,"time":1786073848307,"data":{"turn":2,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":2095,"time":1786073848307,"data":{"turn":2,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"两个 turn 都完成了 ✅\n\n**总结：**\n\n- **Turn 1** — 随机选中 `packages/context/session-reference`，输出了文件结构：\n  ```\n  session-reference/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   ├── index.ts\n  │   └── uri.ts\n  └── tests/\n      └── session-reference.spec.ts\n  ```\n- **Turn 2** — 随机选中 `packages/llm/token-meter`，输出了文件结构：\n  ```\n  token-meter/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   └── index.ts\n  └── tests/\n      └── token-meter.spec.ts\n  ```\n\n**验证方式：** 两个包的随机选择都通过 `python3 random.choice` 从工作区的 `packages/` 目录下实际枚举的 4 个候选包中抽取（`ui-conversation`、`session-reference`、`token-meter`、`skill-local`），文件结构则用 `find` 实际列出文件后整理输出，均已排除 `node_modules` 和 `.git`。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。\n\n**说明：** 本轮没有产生任何文件修改或提交——任务本身就是\"输出文件结构\"，所有产物都在上面的消息文本里。\n\n如果你还想看剩下两个包（`ui-conversation`、`skill-local`）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5a1daadd-6f23-49ea-980b-6f96f67e3f52"},"usage":{"inputTokens":311,"outputTokens":348,"cacheReadTokens":10624,"reasoningTokens":0}},"sourceEventSeqs":[1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,1761,1762,1763,1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,1806,1807,1808,1809,1810,1811,1812,1813,1814,1815,1816,1817,1818,1819,1820,1821,1822,1823,1824,1825,1826,1827,1828,1829,1830,1831,1832,1833,1834,1835,1836,1837,1838,1839,1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1850,1851,1852,1853,1854,1855,1856,1857,1858,1859,1860,1861,1862,1863,1864,1865,1866,1867,1868,1869,1870,1871,1872,1873,1874,1875,1876,1877,1878,1879,1880,1881,1882,1883,1884,1885,1886,1887,1888,1889,1890,1891,1892,1893,1894,1895,1896,1897,1898,1899,1900,1901,1902,1903,1904,1905,1906,1907,1908,1909,1910,1911,1912,1913,1914,1915,1916,1917,1918,1919,1920,1921,1922,1923,1924,1925,1926,1927,1928,1929,1930,1931,1932,1933,1934,1935,1936,1937,1938,1939,1940,1941,1942,1943,1944,1945,1946,1947,1948,1949,1950,1951,1952,1953,1954,1955,1956,1957,1958,1959,1960,1961,1962,1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026,2027,2028,2029,2030,2031,2032,2033,2034,2035,2036,2037,2038,2039,2040,2041,2042,2043,2044,2045,2046,2047,2048,2049,2050,2051,2052,2053,2054,2055,2056,2057,2058,2059,2060,2061,2062,2063,2064,2065,2066,2067,2068,2069,2070,2071,2072,2073,2074,2075,2076,2077,2078,2079,2080,2081,2082,2083,2084,2085,2086,2087,2088,2089,2090,2091,2092,2093,2094],"surfaceOp":"append"}
+{"type":"step/end","seq":2096,"time":1786073848308,"data":{"turn":2,"step":6}}
+{"type":"turn/end","seq":2097,"time":1786073848308,"data":{"turn":2,"reason":{"kind":"completed"}}}
@@ -0,0 +1,200 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "workspace" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- 'button "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"':
+  - img
+  - img
+  - text: "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- 'button "Think The user''s goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""':
+  - img
+  - img
+  - text: "Think The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""
+- button "Bash Show working directory and its contents":
+  - img
+  - img
+  - text: Bash Show working directory and its contents
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- 'button "Think There''s a `packages` directory. Let me look inside to see what packages are available."':
+  - img
+  - img
+  - text: "Think There's a `packages` directory. Let me look inside to see what packages are available."
+- button "Bash List packages directory contents":
+  - img
+  - img
+  - text: Bash List packages directory contents
+- button "Think There are 4 packages:":
+  - img
+  - img
+  - text: "Think There are 4 packages:"
+- button "Failed Bash Randomly pick one package directory":
+  - img
+  - text: Failed Bash Randomly pick one package directory
+- 'button "Think shuf is not available on macOS. I''ll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."':
+  - img
+  - img
+  - text: "Think shuf is not available on macOS. I'll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."
+- button "Bash Randomly select one package with Python":
+  - img
+  - img
+  - text: Bash Randomly select one package with Python
+- 'button "Think The random pick for turn 1 is `packages/context/session-reference`. Now I''ll output its file structure. Let me get the file tree."':
+  - img
+  - img
+  - text: "Think The random pick for turn 1 is `packages/context/session-reference`. Now I'll output its file structure. Let me get the file tree."
+- button "Bash List all files in session-reference package":
+  - img
+  - img
+  - text: Bash List all files in session-reference package
+- 'button "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."':
+  - img
+  - img
+  - text: "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."
+- paragraph:
+  - strong: Turn 1 / 2
+  - text: — 随机选中的包：
+  - code: packages/context/session-reference
+  - text: 📦
+- button "Copy"
+- code: session-reference ├── README.md ├── package.json ├── src │ ├── index.ts │ └── uri.ts └── tests └── session-reference.spec.ts
+- button "Copy"
+- code: "session-reference/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ ├── index.ts # 入口，导出公共 API │ └── uri.ts # 会话引用 URI 相关实现 └── tests/ └── session-reference.spec.ts # 单元测试"
+- paragraph: 这是一个很典型的轻量 TypeScript 包结构：入口 + 实现 + 测试。这一轮到此结束，等系统开启下一个 turn。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- 'button "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."
+- button "Bash Randomly select another package with Python":
+  - img
+  - img
+  - text: Bash Randomly select another package with Python
+- 'button "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."':
+  - img
+  - img
+  - text: "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."
+- button "Bash Re-roll excluding the package from turn 1":
+  - img
+  - img
+  - text: Bash Re-roll excluding the package from turn 1
+- button "Bash List all files in token-meter package":
+  - img
+  - img
+  - text: Bash List all files in token-meter package
+- 'button "Think This is turn 2 of 2. I''ve output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I've output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."
+- paragraph:
+  - strong: Turn 2 / 2
+  - text: — 随机选中的包：
+  - code: packages/llm/token-meter
+  - text: 📦
+- button "Copy"
+- code: token-meter ├── README.md ├── package.json ├── src │ └── index.ts └── tests └── token-meter.spec.ts
+- button "Copy"
+- code: "token-meter/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ └── index.ts # 入口，导出公共 API（token 计量逻辑） └── tests/ └── token-meter.spec.ts # 单元测试"
+- paragraph:
+  - text: 两个 turn 都完成了（turn 1：
+  - code: session-reference
+  - text: ，turn 2：
+  - code: token-meter
+  - text: ）。这一轮到此结束。
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- paragraph: 两个 turn 均已完成，目标达成，标记 goal 为完成。
+- button "Tool call update_goal · goal-{{uuid}}":
+  - img
+  - img
+  - text: Tool call update_goal · goal-{{uuid}}
+- 'button "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"':
+  - img
+  - img
+  - text: "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"
+- paragraph: 两个 turn 都完成了 ✅
+- paragraph:
+  - strong: 总结：
+- list:
+  - listitem:
+    - strong: Turn 1
+    - text: — 随机选中
+    - code: packages/context/session-reference
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: session-reference/ ├── README.md ├── package.json ├── src/ │ ├── index.ts │ └── uri.ts └── tests/ └── session-reference.spec.ts
+  - listitem:
+    - strong: Turn 2
+    - text: — 随机选中
+    - code: packages/llm/token-meter
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: token-meter/ ├── README.md ├── package.json ├── src/ │ └── index.ts └── tests/ └── token-meter.spec.ts
+- paragraph:
+  - strong: 验证方式：
+  - text: 两个包的随机选择都通过
+  - code: python3 random.choice
+  - text: 从工作区的
+  - code: packages/
+  - text: 目录下实际枚举的 4 个候选包中抽取（
+  - code: ui-conversation
+  - text: 、
+  - code: session-reference
+  - text: 、
+  - code: token-meter
+  - text: 、
+  - code: skill-local
+  - text: ），文件结构则用
+  - code: find
+  - text: 实际列出文件后整理输出，均已排除
+  - code: node_modules
+  - text: 和
+  - code: .git
+  - text: 。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。
+- paragraph:
+  - strong: 说明：
+  - text: 本轮没有产生任何文件修改或提交——任务本身就是"输出文件结构"，所有产物都在上面的消息文本里。
+- paragraph:
+  - text: 如果你还想看剩下两个包（
+  - code: ui-conversation
+  - text: 、
+  - code: skill-local
+  - text: ）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- tooltip "Branch into a new conversation"
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "9% of context used"
+- button "Send message" [disabled]
+- text: 2 turns · 12 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 91% Input 113K tok · Output 2.4K tok
@@ -7,9 +7,6 @@
 - text: Reply with the single word LIGHTHOUSE and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Render adjacent CJK strong emphasis. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "CJK strong emphasis" [level=2]
 - paragraph:
  - strong: 注意：
@@ -7,9 +7,6 @@
 - text: Show the Markdown image policy. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Markdown images" [level=2]
 - paragraph:
  - img "Remote test image"
@@ -7,9 +7,6 @@
 - text: Show the local preview URL. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Inline code links" [level=2]
 - paragraph:
  - text: "Preview:"
@@ -7,9 +7,6 @@
 - text: Render this mathematical proof. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Math rendering" [level=2]
 - paragraph:
  - text: Inline dollar
@@ -8,9 +8,6 @@
 - button "Copy":
  - img
 - tooltip "Copy"
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
@@ -38,9 +35,6 @@
 - text: Stopped Now give the final answer. 7/25 {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - paragraph: DONE
 - button "Copy":
  - img
@@ -13,11 +13,13 @@
    - text: 关闭
  - heading "模型" [level=2]
  - paragraph: 填入各提供方的 API 密钥即可使用其模型。
+  - status: 已保存 minimax-cn。
  - list:
    - listitem:
      - text: minimax-cn
-      - button "编辑"
-      - button "删除"
+      - img "API 密钥已配置"
+      - button "编辑 minimax-cn": 编辑
+      - button "删除 minimax-cn": 删除
  - button "添加提供方":
    - img
    - text: 添加提供方
@@ -1,7 +1,7 @@
- dialog "删除模型提供方？":
-  - heading "删除模型提供方？" [level=2]
+- dialog "删除 minimax-cn？":
+  - heading "删除 minimax-cn？" [level=2]
  - button "关闭":
    - img
-  - paragraph: 删除此模型提供方会移除其配置。在重新添加前，你将无法继续使用其模型。
+  - paragraph: 删除 minimax-cn 会移除其配置和存储的 API 密钥。
  - button "取消"
-  - button "删除提供方"
+  - button "删除 minimax-cn"
@@ -55,7 +55,7 @@
    - option "zai-coding-cn"
  - text: API 密钥
  - textbox "API 密钥":
-    - /placeholder: 输入 API 密钥
+    - /placeholder: 输入 API 密钥，或留空使用环境认证
  - group: 自定义设置
  - button "取消"
  - button "保存"
@@ -0,0 +1,7 @@
+- dialog "删除 minimax-cn？":
+  - heading "删除 minimax-cn？" [level=2]
+  - button "关闭":
+    - img
+  - paragraph: 删除 minimax-cn 会移除其配置；其使用的凭证（如有）由其他位置管理，将会保留。
+  - button "取消"
+  - button "删除 minimax-cn"
@@ -16,7 +16,8 @@
  - list:
    - listitem:
      - text: DeepSeek
-      - button "编辑"
+      - img "API 密钥已配置"
+      - button "编辑 DeepSeek (deepseek-official)": 编辑
      - text: DeepSeek deepseek-official API 密钥
      - textbox "API 密钥":
        - /placeholder: 已配置——输入新值可替换
@@ -8,9 +8,6 @@
 - text: "plan Plan mode on. Use /plan off to leave. Interjection Plan a small change: add a --greeting flag to a CLI. Do not read or write any files. Call exit_plan_mode with a short plan of at most five bullet points. Once the plan is approved, reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: "Use the ask_user_question tool to ask me exactly one multi-select question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and two options: label \"Blue\" with description \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\", and label \"Green\" with description \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\" Set multi_select to true. After I answer, reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: "Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop. 7/25 {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
@@ -7,9 +7,6 @@
 - text: "Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop. 7/25 {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
@@ -7,9 +7,6 @@
 - 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. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -7,9 +7,6 @@
 - 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. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -25,9 +22,6 @@
 - text: "Interjection Interjection: include the word BANANA in your final reply. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer.":
  - img
  - img
@@ -11,8 +11,6 @@
 - text: Give one concrete event sourcing example. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation":
-  - img
 - status:
  - strong: This subagent is read-only for now
  - text: The parent session is offline; reopen it to continue sending messages.
@@ -12,9 +12,6 @@
 - text: Explain event sourcing in one sentence. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -31,9 +28,6 @@
 - text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s Now give the same explanation to a human reader. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls.":
  - img
  - img
@@ -0,0 +1,9 @@
+row=todo_write
+title=Update to-do list
+summary=1/4 completed · 实现 fixture 样本
+suffix=+1
+panel=1 completed · 2 in progress · 1 pending
+item=completed 梳理需求
+item=in_progress 实现 fixture 样本
+item=in_progress 跑后台构建
+item=pending 浏览器验收
@@ -0,0 +1,35 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- status: Deep diving...
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Stop generating"
+- text: 1 turns · 1 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok
@@ -0,0 +1,36 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785918212891,"cwd":"{{cwd}}/workspace"}
+{"type":"permission/preset","seq":0,"time":1785918212892,"data":{"preset":"workspace-write"}}
+{"type":"sandbox/mode","seq":1,"time":1785918212893,"data":{"mode":"workspace-write"}}
+{"type":"approval/policy","seq":2,"time":1785918212893,"data":{"policy":"ask"}}
+{"type":"turn/start","seq":3,"time":1785918212945,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":4,"time":1785918212945,"data":{"content":[{"type":"text","text":"Begin your reply with the plain sentence \"Reading the workspace now.\" as text, and in that same message call the bash tool with the command \"echo alpha\". After the tool result, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"4dcaa766-7ea2-4c6a-84cb-0d6ab53b5fb4"},"surfaceOp":"append"}
+{"type":"session/title","seq":5,"time":1785918212946,"data":{"title":"Begin your reply with the","messageSeqs":[4],"source":{"kind":"fallback"}}}
+{"type":"user/message","seq":6,"time":1785918212956,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"60b8851a-888c-4d7e-9513-7d845f8d769b"},"surfaceOp":"append"}
+{"type":"step/start","seq":7,"time":1785918212956,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":8,"time":1785918212957,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","maxTokens":256000,"reasoningEffort":"high"},"adapterDefaults":{"reasoningEffort":true,"maxTokens":true},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":9,"time":1785918212958,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":1000000}}
+{"type":"assistant/chunk","seq":10,"time":1785918214389,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":11,"time0":1785918214390,"data":{"turn":1,"step":1,"index":0,"dt":[101,1,0,0,0,56,1,0,0,0,0,0,0,72,1,0,0,0,0,29,0,0,0,0,35,1,0,17,39,0,0,0,0,0,31,0,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," begin"," with"," \"","Reading"," the"," workspace"," now",".\""," and"," call"," bash"," with"," \"","echo"," alpha","\""," in"," the"," same"," message","."," Then"," after"," the"," tool"," result",","," reply"," with"," the"," single"," word"," D","ONE"," and"," stop","."]}}
+{"type":"assistant/chunk","seq":53,"time":1785918214774,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"text-chunks","seq0":54,"time0":1785918214774,"data":{"turn":1,"step":1,"index":1,"dt":[0,0,0,48],"texts":["Reading"," the"," workspace"," now","."]}}
+{"type":"assistant/chunk","seq":59,"time":1785918214841,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":2,"blockType":"tool-call"}}}
+{"type":"tool-call-chunks","seq0":60,"time0":1785918214842,"data":{"turn":1,"step":1,"index":2,"dt":[28,0,0,0,0,25,0,0,0,52,1,0,0,0,25,0,0,1,15,0,25],"id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","args":["","{","\"","command","\"",": ","\"","echo"," alpha","\"",", ","\"","description","\"",": ","\"","Print"," alpha"," to"," stdout","\"","}"]}}
+{"type":"assistant/chunk","seq":82,"time":1785918215056,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."}}}}
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+{"type":"assistant/chunk","seq":86,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":87,"time":1785918215061,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."},{"type":"text","text":"Reading the workspace now."},{"type":"tool-call","id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"73708391-4b5f-429e-b71c-ef2114244a95"},"usage":{"inputTokens":7788,"outputTokens":109,"cacheReadTokens":0,"reasoningTokens":42}},"sourceEventSeqs":[10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86],"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":94,"time":1785918216288,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"ONE"}}}
+{"type":"assistant/chunk","seq":95,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
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+{"type":"assistant/chunk","seq":97,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":98,"time":1785918216289,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fbb5a6d0-9945-4b52-ad15-978173d450a7"},"usage":{"inputTokens":103,"outputTokens":3,"cacheReadTokens":7808,"reasoningTokens":0}},"sourceEventSeqs":[92,93,94,95,96,97],"surfaceOp":"append"}
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+{"type":"turn/end","seq":100,"time":1785918216289,"data":{"turn":1,"reason":{"kind":"completed"}}}
@@ -0,0 +1,40 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- text: Stopped
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Send message" [disabled]
+- text: 1 turns · 2 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok
@@ -7,9 +7,6 @@
 - text: Use web_search to search exactly "DeepSeek Harness snapshot search". Then reply exactly SEARCH_DONE and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/Show More
+++ b/Show More