```markdown
1. Overall Summary
本次文档更新主要增强了多代理系统的可观测性，并澄清了配置诊断机制。新增了通过 Hook 追踪子代理成本和使用情况的详细字段，同时优化了 `/status` 命令的说明，以解决开发者对配置层级显示的困惑。
2. Key Themes
* **精细化成本追踪与遥测:** `hooks.md` 新增了在 `PostToolUse` 中获取子代理详细使用数据的能力，包括总 Token 数、耗时、工具调用次数及分类明细。
* **异步行为处理:** 明确区分了同步调用与后台异步调用（`run_in_background: true`）在 Hook 返回数据结构上的差异（特别是 `status` 字段和遥测数据的缺失）。
* **配置诊断透明度:** `settings.md` 重新阐述了 `/status` 输出中 `Setting sources` 的含义，明确它仅列出加载的配置层级，并不解析每个键值的最终来源。
3. Impact level
**Medium**
* **理由:** `hooks.md` 的变更属于功能性增强，为开发者提供了此前无法获取的细粒度监控数据，对于构建需严格管理成本的多代理应用非常重要。`settings.md` 是文档澄清，虽不改变代码行为，但能有效降低调试配置问题时的认知负担。
4. Action items for developers
* 更新 `PostToolUse` Hook 实现逻辑，利用新增的 `totalTokens` 和 `usage` 字段记录子代理的具体开销。
* 在处理后台代理调用时，增加对 `status: "async_launched"` 的判断，避免尝试读取不存在的使用量字段。
* 调试配置冲突时，明确 `/status` 只显示激活的配置源（如 Enterprise managed settings），若需查看具体键值的覆盖情况，需手动检查文件层级。
* 若 `/status` 报错，优先检查 `settings.json` 的 JSON 语法合法性及值类型是否符合校验规则。
```
💭 Model Reasoning
1. **Analyze the Request:**
* **Role:** World-class programmer analyzing documentation changes.
* **Input:** Documentation diffs for two pages (`hooks.md` and `settings.md`).
* **Output Format:** Markdown, Chinese response.
* **Structure:** Overall Summary, Key Themes, Impact Level, Action Items.
* **Constraint:** Concise, insightful, developer-focused.
2. **Analyze the Diffs:**
* **`hooks.md`:**
* **New Section:** Added documentation regarding `PostToolUse` hooks specifically for completed Agent calls.
* **New Data Fields:** Detailed a table of fields available in `tool_response` for subagent calls (`status`, `agentId`, `content`, `totalTokens`, `totalDurationMs`, `totalToolUseCount`, `usage`).
* **Purpose:** To allow developers to record per-subagent costs and telemetry from hooks.
* **Edge Case:** Clarified behavior for `run_in_background: true` (immediate return, no usage stats, status is `"async_launched"`).
* **Significance:** This is a significant enhancement for observability and cost management in multi-agent workflows. It exposes granular telemetry data that wasn't previously documented (or available) in this specific context.
* **`settings.md`:**
* **Clarification:** Rewrote the section on "Verify active settings" (`/status` command).
* **UI Description:** Describes the "Status tab" and the `Setting sources` line more precisely. It lists layers (User, Project, Managed).
* **Managed Settings:** Details how delivery channels (remote, plist, HKLM, etc.) are displayed in parentheses.
* **Behavioral Nuance:** "A layer appears in the list only when that source is loaded with at least one key."
* **Correction/Clarification:** Explicitly states what `Setting sources` *does not* do (show layer per key) and what the "Config tab" is (editor for toggles, not a view of `settings.json`). It also reiterates error reporting (invalid JSON, validation failures).
* **Significance:** Improves DX (Developer Experience) by clarifying confusion about what the `/status` command actually displays vs. what developers might expect (e.g., seeing exactly which file provided which setting).
3. **Synthesize and Structure (Drafting):**
* *Overall Summary:* The update focuses on improving observability for multi-agent systems and clarifying configuration diagnostics. It adds new telemetry hooks for subagent cost tracking and refines the documentation for the `/status` command to prevent user confusion.
* *Key Themes:*
* **Observability & Cost Tracking:** Detailed breakdown of subagent usage (tokens, duration, tool count) via `PostToolUse` hooks.
* **Configuration Diagnostics:** Clearer explanation of how settings layers are displayed and the limitations of the `/status` UI.
* **Async Handling:** Specific documentation for background agent runs regarding telemetry availability.
* *Impact Level:*
* **Medium.**
* *Reasoning:* The hooks change is powerful for developers building complex workflows with agents, enabling precise cost accounting. The settings change is a documentation refinement that improves understanding but doesn't change code behavior. It's not breaking, but the hook addition is functionally significant.
* *Action Items:*
* Update `PostToolUse` hook implementations to parse the new `tool_response` fields (`totalTokens`, `usage`, etc.) if you need to track subagent costs.
* Handle the `async_launched` status for background agent calls correctly (don't expect usage stats immediately).
* Rely on `/status` for verifying source layers, but understand it won't resolve key overrides per file.
* Review settings file JSON/validation if `/status` reports errors.
4. **Refine and Translate to Chinese:**
* *Summary:* 本次更新重点增强了多代理系统的可观测性，并澄清了配置诊断机制。新增了通过 Hook 追踪子代理成本和使用情况的功能，同时优化了 `/status` 命令的文档说明，以消除用户对配置层级显示的误解。
* *Themes:*
* **可观测性与成本控制:** 详细公开了子代理的 token 使用量、持续时间和工具调用次数。
* **配置诊断优化:** 明确了 `/status` 命令显示的 `Setting sources` 的含义及其局限性（不显示具体键值的来源文件）。
* **异步处理说明:** 区分了同步调用与后台异步调用在 Hook 返回数据上的差异。
* *Impact:*
* **Medium.** (理由：新增的 Hook 数据字段对需要精细化管理 AI 成本的开发者非常有价值，属于功能性增强而非破坏性变更；Settings 部分主要是文档澄清。)
* *Action Items:*
* 利用 `PostToolUse` Hook 中新增的 `totalTokens` 和 `usage` 字段，实现子代理级别的成本计费逻辑。
* 处理 `run_in_background: true` 的场景时，注意 `tool_response` 中不会包含使用量字段，仅包含 `status: "async_launched"`。
* 调试配置问题时，明确 `/status` 仅显示已加载的设置源层级，查看具体键值的最终生效结果需结合其他方式或代码逻辑。
* 检查 `settings.json` 的 JSON 语法或验证规则，若 `/status` 报错。
5. **Final Review against Constraints:**
* Concise? Yes.
* Insightful? Yes, focuses on *why* (cost tracking, debugging).
* Markdown format? Yes.
* Chinese? Yes.
6. **Final Output Generation** (Proceed to generate output based on step 4).