fix(agent-loop): open turns before pre-step

packages/hooks/hook-protocol/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/hooks/hook-protocol/README.md
-README.md: 8cf4b95c95d43b8fbc27bbdcaf727dabf7d96805
-README.zh.md: 15a537b67677a401ab434a3e73af1973030780c0
+README.md: e807d9597eb5f811195bab9a0ad2b30b545e1205
+README.zh.md: f9990c046d4e52a2fa911776e92fcf397d159633

packages/hooks/hook-protocol/README.md

@@ -29,7 +29,7 @@ Why a shared lib at all: Codex deliberately reimplements a *subset* of the Claud
 
 Declaration-merged into `SessionEventMap` (log-only, like `compact/*` — NOT a `SurfaceEventType`, no `surfaceOp`): `hook/invoked` (a hook command ran) and `hook/result` (its outcome, paired by `handlerId`, with `appendHookResult` owning the decision rule). Payloads and per-event JSDoc are in the generated [persistence log event catalog](../../../docs/persistence-catalog.md); `stderrSummary` is truncated to the record's `stderrSummaryMaxChars` (the bridge's config, reference default `DEFAULT_STDERR_SUMMARY_MAX_CHARS` = 500; omitted when empty).
 
-Hook provenance records must sit inside an open turn. The mid-turn points (`PreToolUse`/`PostToolUse`/`Stop`) satisfy that owner-defined relation by construction. `SessionStart` and the pre-turn `UserPromptSubmit` admission seam get no `hook/*` record; allowed context is instead evidenced by its sourced `user/message` — see the hooks Agent Note.
+Hook provenance records must sit inside an open turn. `UserPromptSubmit`, `PreToolUse`, `PostToolUse`, and `Stop` satisfy that owner-defined relation by construction. `SessionStart` runs before turn 1 and gets no `hook/*` record; its allowed context remains pending in the inbox until a waking delivery opens a turn — see the hooks Agent Note.
 
 ## Model Experience
 

packages/hooks/hook-protocol/README.zh.md

@@ -29,7 +29,7 @@ Claude Code／Codex hook 协议格式（wire format）的**共享核心**。它
 
 通过 declaration merging 合并到 `SessionEventMap`（仅日志，与 `compact/*` 相同；不是 `SurfaceEventType`，没有 `surfaceOp`）：`hook/invoked`（hook 命令已运行）与 `hook/result`（其结果，按 `handlerId` 配对，决策规则由 `appendHookResult` 负责）。Payload 与每事件 JSDoc 位于生成的 [持久化日志事件目录](../../../docs/persistence-catalog.md)；`stderrSummary` 会截断到记录的 `stderrSummaryMaxChars`（桥接配置，参考默认值 `DEFAULT_STDERR_SUMMARY_MAX_CHARS` = 500；为空时省略）。
 
-Hook 溯源记录必须位于一个尚未结束的轮次内。轮次中的点（`PreToolUse`／`PostToolUse`／`Stop`）按构造满足这条由所有者定义的关系。`SessionStart` 与轮次前的 `UserPromptSubmit` 准入 seam 没有 `hook/*` 记录；获准的上下文改由其带来源的 `user/message` 作为证据，详见 hooks Agent Note。
+Hook 溯源记录必须位于一个尚未结束的轮次内。`UserPromptSubmit`、`PreToolUse`、`PostToolUse` 与 `Stop` 按构造满足这条由所有者定义的关系。`SessionStart` 在轮次 1 之前运行，因此没有 `hook/*` 记录；其获准的上下文会在 inbox 中保持待处理，直到唤醒交付打开一个轮次，详见 hooks Agent Note。
 
 ## 模型体验