### 文档变更分析
#### 1. 总体总结
文档详细阐明了当 Hook 返回 `ok: false` 时的行为逻辑，从原先笼统的“除特定事件外终止回合”更新为**基于特定事件的差异化处理**。这一变更主要改变了 `PreToolUse` 等事件被拒绝时的反馈机制（从终止会话变为返回错误信息给模型），允许开发者在拦截操作时让模型进行自我修正。
#### 2. 核心主题
* **行为细粒度化**：不再将大部分事件一视同仁，而是区分了哪些事件在拒绝时会向 Claude 返回错误（如 `PreToolUse`），哪些会直接向用户显示警告并结束回合（如 `PostToolUse`）。
* **模型可见性控制**：明确了 `reason` 字段的流向。在 `PreToolUse` 中，拒绝理由会被作为工具错误反馈给 Claude，使其能够调整行为；而在 `PostToolUse` 中，Claude 无法看到该理由。
* **指令 Hook 的关联性**：强调了对于需要更精细控制（特别是 `PermissionRequest`）的场景，应转向使用指令 Hook（Command Hook）。
#### 3. 影响等级
**High (高)**
**理由**：这是一项重大的功能语义澄清或变更。此前文档暗示 `PreToolUse` 被拒绝时会终止回合，新文档明确指出它会将错误返回给 Claude 以供重试。这从根本上改变了开发者构建工具验证逻辑的方式——从“拦截并停止”转变为“拦截并修正”，直接影响应用的交互流程和用户体验。
#### 4. 开发者行动项
* **审查 `PreToolUse` Hook**：检查现有的实现逻辑。如果您期望在拒绝工具使用时完全停止对话，您需要调整代码，因为现在的默认行为是让 Claude 看到错误并可能重试。
* **利用新的错误反馈机制**：在 `PreToolUse` 中编写更具体的 `reason`，引导 Claude 如何修正错误的工具调用参数，而不是简单地阻断。
* **检查 `PermissionRequest` 逻辑**：文档明确指出 `ok: false` 对该事件无效。如果您的代码依赖此逻辑来阻止权限请求，必须迁移到指令 Hook 的 `hookSpecificOutput.decision.behavior: "deny"`。
💭 Model Reasoning
1. **Analyze the Request:**
* **Role:** World-class programmer analyzing documentation changes.
* **Format:** Markdown.
* **Language:** Chinese (as requested in the system prompt).
* **Input:** Diff for two pages (`hooks.md` and `hooks-guide.md`).
* **Requirements:** Concise, insightful, developer-focused. Structure: Overall Summary, Key Themes, Impact Level, Action Items.
2. **Analyze the Content (The Diffs):**
* **Context:** Documentation for "Hooks" (likely in an AI agent/interaction context, given references to "Claude", "Subagent", "ToolUse").
* **Change:** The documentation clarifies the behavior of returning `ok: false` in different hook types.
* **Previous State:** It was generally stated that `ok: false` blocks the action. For `Stop` and `SubagentStop`, the reason goes to Claude. For others, the turn ends and a warning appears (Claude doesn't see it). It mentioned using command hooks for different semantics.
* **New State:**
* `hooks.md`: Expanded into a detailed list explaining specific behaviors for `Stop`, `SubagentStop`, `PreToolUse`, `PostToolUse`, `PostToolBatch`, `UserPromptSubmit`, `UserPromptExpansion`, `PostToolUseFailure`, `TaskCreated`, `TaskCompleted`, and `PermissionRequest`.
* `hooks-guide.md`: Updated the general description to highlight that behavior depends on the event, specifically mentioning `PreToolUse` (reason becomes tool error, Claude sees it) vs. others (turn ends).
3. **Synthesize "What Changed":**
* The documentation moved from a general rule (mostly "turn ends") to a granular specification of what happens when a hook returns `ok: false`.
* Crucial distinction introduced: `PreToolUse` (and others like `TaskCreated`) now behave differently from `PostToolUse`. Specifically, `PreToolUse` denies the call and feeds the reason back to Claude as an error, allowing it to retry/adjust, whereas previously (or in the old text) the distinction might have been less clear or implied a hard stop.
4. **Synthesize "Why It Matters to Developers":**
* **Control:** Developers need to know exactly what happens when they block an action. Does the agent just stop? Does it get an error and try again? Does it get a warning visible to the user?
* **Debugging/UX:** If a dev wants to prevent a tool use but let the agent fix it, they need to know `PreToolUse` allows this. If they want to hard stop the conversation, `PostToolUse` does that.
* **Migration/Behavior:** This might be clarifying existing behavior or introducing new behavior. Either way, it changes how developers implement hooks for specific events (e.g., validation in `PreToolUse` vs. logging in `PostToolUse`).
5. **Draft the Response (Iterative refinement in Chinese):**
* *Overall Summary:* The docs now provide a detailed, event-specific breakdown of the consequences of returning `ok: false` in hooks, distinguishing between feeding errors back to the model (for retries) vs. ending the turn.
* *Draft (CN):* 文档更新了当 Hook 返回 `ok: false` 时的行为说明，从之前笼统的“阻塞并显示警告”细化为针对不同事件的差异化处理，明确区分了哪些会将原因反馈给 Claude 以供重试，哪些会直接终止会话。
* *Key Themes:*
* Granularity over generalization.
* Distinction between "Tool Error" (Model sees it) and "Warning" (User sees it).
* Specific focus on `PreToolUse` behavior changes/clarifications.
* *Draft (CN):*
* **行为细粒度化**：不同 Hook 事件（如 `PreToolUse` 与 `PostToolUse`）在拒绝授权时的处理逻辑现在有明确区别。
* **模型可见性**：明确了哪些拒绝原因会作为错误返回给 Claude（使其能够自我修正），哪些仅作为警告显示给用户（导致回合结束）。
* **PreToolUse 逻辑增强**：特别指出 `PreToolUse` 在拒绝时，原因会作为工具错误返回给 Claude，而非仅仅是终止回合。
* *Impact Level:*
* This is a "High" impact for developers currently building or maintaining hooks, especially if they rely on blocking tool use. If the code previously assumed `ok: false` always stopped the turn, their logic might break (or conversely, they can now implement smarter validation).
* Let's look closer. The old text said: "For all other supported events, the turn ends... Claude does not see it." The new text says: "`PreToolUse`... reason is returned to Claude... so it can adjust."
* This is a behavior change (or a major clarification) for `PreToolUse`. It used to be grouped with "turn ends". Now it's grouped with "tool error".
* Verdict: High/Medium. Let's go with **High** because it fundamentally changes the control flow of `PreToolUse` (blocking no longer stops the turn, it returns an error).
* *Draft (CN):* **High**。特别是对于 `PreToolUse` Hook 的行为，从“直接终止回合”变为“返回错误给 Claude 以便重试”，这显著改变了基于 Hook 的验证和交互逻辑。
* *Action Items:*
* Review existing `PreToolUse` hooks. Do you want to stop the conversation or just deny the tool?
* Review `PostToolUseFailure`, `TaskCreated`, `TaskCompleted` hooks.
* Adjust error handling logic if expecting a hard stop on `PreToolUse`.
* *Draft (CN):*
* 检查现有的 `PreToolUse` Hook 实现，确认“拒绝工具调用”是否符合预期（现在会返回错误给模型而非直接停止）。
* 审查依赖于 `ok: false` 导致“回合结束”的 Hook（如 `PostToolUse`），确保其行为未受影响。
* 利用新的 `PreToolUse` 语义实现更智能的工具调用验证和重试机制。
6. **Final Polish (formatting and tone):** Ensure the tone is professional, concise, and insightful.
* *Self-Correction during drafting:* I should check if the diff implies a change in the *product* or just the *docs*. The diff is in `hooks.md`. The change from "turn ends" to "tool error" for `PreToolUse` strongly implies a product change or a significant correction of previous misunderstanding. I must treat it as a potential functional change affecting developers.
7. **Final Output Generation:** (Proceed to generate the markdown response in Chinese).
* Structure matches requirements.
* Content matches analysis.
* Language is Chinese.
*(Self-Correction on specific events)*:
Old: "For all other supported events [besides Stop/SubagentStop], the turn ends..."
New: "PreToolUse: tool call denied... reason returned... equivalent to deny".
This is definitely a significant shift in behavior description for `PreToolUse`.
8. **Final Review against constraints:**
* Concise? Yes.
* Insightful? Yes, highlights the shift from hard stop to error feedback.
* Developer focus? Yes.
* Markdown? Yes.
(Ready to output)