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Merge commit 'e03b51d7db18bffe4b1988a8a5d35e01c18fc2c1' into codex/workflow-runs-chat-node-f6

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-01-goal-command-input-projection.md
2026-08-01-goal-command-input-projection.md: 02836de7ea2d79122d7650d1b37406802ee1489f
2026-08-01-goal-command-input-projection.zh.md: 8c28ba1c90be5942aa526fb9d8d2d8b1f014742e

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# Agent Note: Goal command input projection
Status: implemented
English | [中文](2026-08-01-goal-command-input-projection.zh.md)
## Problem
Human commands execute outside the model turn and persist as `command/run` plus `command/done`. The Web transcript rendered only their result row. On a fresh session, `/goal` therefore cleared the composer and completed successfully while the page stayed on the empty hero; its result became visible only after later conversation content activated Chat. Appending an ordinary `user/message` from the handler would change model-visible history and command semantics.
## Decision
The command registry and durable command lifecycle remain unchanged. `command/run` records the parser-owned name, optional verbatim arguments, source, and invocation id; `command/done` records settlement. Neither event carries browser presentation intent.
The `ui-goal` client plugin registers a Goal-owned Conversation Definition beside the generic command Definition. Both match the same `/goal` `command/run`: the generic Definition retains the durable result row, while the Goal Definition builds a separate `command-input` Chat Node at an earlier fractional anchor. The Goal plugin also registers the keyed React renderer for that Node. Its local component copies only the user bubble's right-aligned geometry and semantic tokens, uses 14px/22px monospace text, and mounts no timestamp, copy, or branch actions.
`Session.composerPhase` treats visible non-command Chat Nodes as conversation content, so `command-input` activates the current conversation while a generic command row alone does not. The Host `summary.blank` bit remains turn-based, so list hiding and blank-session reuse do not change.
The Goal Definition derives `/<name><args.trimEnd()>` from the structured run: separator and internal multiline input survive, while the claimed bare form whose arguments contain one space displays `/goal`. A history window containing only `command/done` has no matching Goal Context, so it keeps the generic result row without inventing an input bubble; loading the older run restores both Nodes.
The model boundary is unchanged. The Goal projection creates no `user/message`, `turn/start`, `step/start`, or `request/header`. Accepted goal mutations reach the model only through the goal domain's existing `<goal_state>` snapshot or clear tombstone, independently of the command-input Node.
## Verification
Goal client tests pin the dual Definition output, ordering, other-command exclusion, bare and multiline text, done-only cuts, renderer semantics, disposal, and fresh-session phase selection. The keyless assembled Web scenario submits bare `/goal` in a fresh session with no model adapter, verifies both rows and the absence of model-surface events, then reloads and verifies the persisted transcript.
## Alternatives considered
**Append `user/message` in the `/goal` handler.** Rejected because the command would become model input and could trigger or alter a later request.
**Add presentation intent to the command registry and durable event.** Rejected because one Goal view would widen the generic command interface and make Session, Chat, and every command fixture carry browser presentation state. The existing `command/run` name and arguments already let the composed Goal client reconstruct its own view.
**Teach the generic command renderer about `/goal`.** Rejected because command-specific view construction belongs to the Goal client plugin. Composing that plugin out must remove the bubble without changing command execution or the generic result row.
**Render every command input as a user bubble.** Rejected because existing control commands deliberately leave a fresh session on the hero; changing them would broaden interaction semantics without a feature-owned Conversation Definition.
## Consequences
One durable `/goal` run feeds two independently owned view Contexts without changing the command capability. Composing `ui-goal` out leaves ordinary command execution and its result row intact. Live tabs and cold reloads agree because both views derive from the same run. A page cut that retains only `command/done` temporarily shows only the result row; if that command is the session's only content, the hero hides the row until an older page restores the run. The session remains list-hidden and reusable until a model turn starts because Host blank semantics remain turn-based.

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# Agent Note: Goal 命令输入投影
Status: implemented
[English](2026-08-01-goal-command-input-projection.md) | 中文
## 问题
面向用户的命令在模型轮次之外执行，并持久化为 `command/run` 与 `command/done`。Web transcript（文本记录）此前只渲染结果行。因此，在新会话中，`/goal` 会清空编辑器并成功完成，但页面仍停留在空白 Hero；只有后续对话内容激活 Chat 后，结果才会显示。若处理器追加普通 `user/message`，将改变模型可见历史与命令语义。
## 决策
命令注册表与持久命令生命周期保持不变。`command/run` 记录由解析器提供的名称、可选的原样参数、来源和调用 id；`command/done` 记录结算。两条事件都不携带浏览器呈现意图。
`ui-goal` 客户端插件会在通用命令 Definition 之外注册一个归 Goal 所有的 Conversation Definition。两者都匹配同一条 `/goal` `command/run`：通用 Definition 保留持久结果行，Goal Definition 则在更早的分数锚点构建独立的 `command-input` Chat Node。Goal 插件还为该 Node 注册 keyed React renderer。它的本地组件只复用用户气泡的右对齐几何形态和语义 token，使用 14px/22px 等宽字体文本，并且不挂载时间戳、复制或分支操作。
`Session.composerPhase` 把可见的非命令 Chat Node 视为对话内容，因此 `command-input` 会激活当前对话，而仅有通用命令行时不会。Host 的 `summary.blank` 位仍以轮次为基础，因此列表隐藏和空白会话复用保持不变。
Goal Definition 根据结构化 run 派生 `/<name><args.trimEnd()>`：分隔符与内部多行输入保持不变；在已认领的裸命令形式中，参数只有一个空格时显示 `/goal`。仅包含 `command/done` 的历史窗口没有匹配的 Goal Context，因此会保留通用结果行，而不会虚构输入气泡；加载包含更早 run 的页面后，两个 Node 都会恢复。
模型边界保持不变。Goal 投影不会创建 `user/message`、`turn/start`、`step/start` 或 `request/header`。已接受的 goal 变更只会通过 goal 领域现有的 `<goal_state>` 快照或 clear tombstone 到达模型，与 `command-input` Node 无关。
## 验证
Goal 客户端测试固定双 Definition 输出、顺序、排除其他命令、裸命令与多行文本、仅含 done 的切分窗口、renderer 语义、资源释放和新会话 phase 选择。无密钥的完整组装 Web 场景在不含模型适配器的新会话中提交裸 `/goal`，验证两行都显示且不存在面向模型的事件，然后重新加载并验证持久化后的 transcript。
## 备选方案
**在 `/goal` 处理器中追加 `user/message`。**不予采纳，因为该命令会变成模型输入，并可能触发或改变后续请求。
**向命令注册表与持久事件添加呈现意图。**不予采纳，因为一个 Goal 视图会扩大通用命令接口，并要求 Session、Chat 和每个命令 fixture（测试前置数据）都携带浏览器呈现状态。现有 `command/run` 的名称和参数已足以让组合后的 Goal 客户端重建自有视图。
**让通用命令 renderer 识别 `/goal`。**不予采纳，因为命令专用视图的构建归 Goal 客户端插件所有。在组合中移除该插件后，气泡必须随之消失，且命令执行和通用结果行不能改变。
**把每条命令输入都渲染为用户气泡。**不予采纳，因为现有控制命令会有意让新会话停留在 Hero；这样修改会在没有功能自有 Conversation Definition 的情况下扩大交互语义。
## 后果
一条持久 `/goal` run 会向两个各自独立归属的视图 Context 提供数据，而不改变命令能力。在组合中移除 `ui-goal` 后，普通命令执行及其结果行保持不变。实时标签页与冷重载会得到一致结果，因为两个视图都派生自同一条 run。页面切分只保留 `command/done` 时，会暂时只显示结果行；如果该命令是会话中的唯一内容，Hero 会隐藏该行，直到加载更早页面恢复 run。由于 Host 的 blank 语义仍以轮次为基础，会话在模型轮次开始前仍从列表中隐藏，并且可以复用。