Changes on 2026-04-07

1. **Understand the Goal**: The user wants a concise, insightful analysis of a batch of documentation changes (7 pages). I need to act as a world-class programmer, reply in Chinese, and focus on what matters to developers. The output must be in markdown format with specific sections: Overall Summary, Key Themes, Impact Level, and Action Items. 2. **Analyze the Changes**: * **Page 1: `common-workflows.md`** * *Change*: Updated description of `/resume` behavior for worktrees. * *Detail*: Claude Code now resumes sessions from other worktrees directly without requiring the user to switch directories first. * *Significance*: UX improvement for developers using git worktrees. * **Page 2: `hooks.md`** * *Change 1*: Clarified stdout/stderr handling for hooks. Exit 0 -> debug log (not verbose mode), Exit 2 -> stderr fed back, Other -> one-line notice in transcript + debug log. * *Change 2*: `suppressOutput` JSON field clarification -> affects debug log, not verbose mode. * *Change 3*: Added `sessionTitle` field for `UserPromptSubmit` hook. * *Change 4*: Debug hooks section updated. `claude --debug` no longer prints to terminal; writes to log file. Explains how to access log. * *Significance*: Significant behavioral change in debugging (`--debug` flag behavior changed). New feature (`sessionTitle`). Logging terminology changed (verbose vs debug log). * **Page 3: `hooks-guide.md`** * *Change 1*: Aligned exit code explanations with `hooks.md` (transcript shows summary, full details in debug log). * *Change 2*: Updated MCP tool example text (stderr -> debug log). * *Change 3*: Updated "Debug techniques" section. Transcript view is now cleaner (one-line summaries), full debugging requires checking log files (`--debug-file` or `/debug`). * *Significance*: Reinforces the shift away from verbose terminal output to structured debug logging. * **Page 4: `model-config.md`** * *Change 1*: Default effort levels updated. Pro/Max -> Medium. Others (API, Team, Enterprise, 3rd party) -> High. * *Change 2*: Clarified "ultrathink" prompt behavior (no effect if already High/Max). * *Change 3*: Updated terminology from "extra usage" to "usage credits" for 1M context. * *Significance*: Potential behavioral change in default AI reasoning depth for different user tiers. Terminology update. * **Page 5: `output-styles.md`** * *Change*: Added note that plugins can ship output styles in `output-styles/` directory. * *Significance*: Extensibility improvement for plugin authors. * **Page 6: `plugins-reference.md`** * *Change*: Clarified naming behavior when a skill path points to a directory with `SKILL.md`. Frontmatter `name` takes precedence over directory basename. * *Significance*: Stability for plugin authors regarding skill invocation names. * **Page 7: `troubleshooting.md`** * *Change*: Added troubleshooting for macOS login failures related to Keychain issues. Suggested `claude doctor` and manual unlock commands. * *Significance*: Helpful fix for macOS users facing auth issues. 3. **Synthesize and Structure**: * **Overall Summary**: Focus on the shift in debugging behavior (file-based vs terminal), updates to model defaults, and UX improvements for workflows/plugins. * **Key Themes**: * *Debugging Refactor*: Moving from verbose terminal output to dedicated debug logs. * *Hooks Enhancements*: New `sessionTitle` feature and clearer logging behaviors. * *Model Defaults & Pricing*: Changes to default effort levels and terminology ("usage credits"). * *UX Improvements*: Worktree handling, macOS login help, plugin extensibility. * **Impact Level**: * *Level*: Medium. * *Reasoning*: The change in `claude --debug` behavior (no longer printing to terminal) affects developers who rely on real-time hook debugging. Default effort level changes might affect performance/cost perception. Most other changes are additive or clarifications. * **Action Items**: * Update debugging workflows to use `--debug-file` or check log files instead of watching terminal output. * Review/Update custom hooks if they relied on stdout appearing in verbose mode or terminal output from `--debug`. * Be aware of new `sessionTitle` capability in `UserPromptSubmit` hooks. * Plugin authors can now package output styles and control skill naming better. * macOS users with login issues should check Keychain. 4. **Drafting the Response (in Chinese)**: * *Summary*: 本次更新主要涉及调试行为的重大变更（从终端输出转向日志文件）、Hook 功能增强（新增会话命名）、模型默认配置调整以及工作流和插件系统的改进。 * *Themes*: 调试机制重构、Hook 系统增强、模型默认配置变更、开发者体验优化。 * *Impact*: Medium.（原因：`--debug` 行为改变影响调试习惯，模型默认值变更影响性能，其他多为增强）。 * *Action Items*: 更新调试脚本/流程、利用 `sessionTitle` 自动命名、插件作者关注新特性、macOS 用户排查 Keychain。 5. **Refining the Content**: * *Refinement on Hooks*: Specifically mention that `Exit 0` stdout goes to debug log, not verbose mode anymore. `Exit other` only shows a one-line notice in transcript. * *Refinement on Debug*: `claude --debug` is silent in terminal now. * *Refinement on Model*: Medium vs High defaults. 6. **Final Polish (Markdown)**: Ensure the tone is professional ("world-class programmer") and concise. Use correct Chinese terminology (e.g., "工作树" for worktrees, "钩子" for hooks). *(Self-Correction during drafting)*: Make sure to highlight that `claude --debug` *does not print to the terminal* anymore. This is the biggest "gotcha" for developers currently debugging hooks. 7. **Final Output Generation** (Proceeding to generate the response based on the above steps).

1. **Understand the Goal**: The user wants a concise, insightful analysis of documentation changes across 7 pages. I need to act as a world-class programmer, summarize the changes, identify themes, assess impact, and list action items. The output must be in Markdown and Chinese. 2. **Analyze the Changes (Page by Page)**: * **Page: `data-usage.md`** * *Change*: Updated "Local caching" section. * *Details*: Changed from generic description to specific details: stored in `~/.claude/projects/`, in plaintext, 30 days default, configurable via `cleanupPeriodDays`. Added link to "application data" docs. * *Developer Implication*: Privacy and disk space awareness. Developers now know exactly where data lives and that it's plaintext. * **Page: `interactive-mode.md`** * *Change*: Updated behavior of `Ctrl+L`. * *Details*: Changed from "Redraw the screen" (repaints UI without clearing history) to "Clear prompt input" (clears typed text, keeps history). * *Developer Implication*: UX change. If a developer used `Ctrl+L` to refresh the screen, it now clears their current line. This is a behavior shift. * **Page: `plugins.md`** * *Change*: JSON formatting in the example code block. * *Details*: Indentation changes (adding spaces). No functional change in the JSON structure itself, just formatting. * *Developer Implication*: Minimal. Just documentation formatting. * **Page: `plugins-reference.md`** * *Change*: Clarified plugin cache behavior regarding updates. * *Details*: Explained that previous versions in `~/.claude/plugins/cache` are marked as orphaned and removed after 7 days to allow concurrent sessions to finish. * *Developer Implication*: Understanding plugin lifecycle and disk space management. Important for plugin developers debugging versioning issues. * **Page: `about-claude/models/overview.md`** * *Change*: Updated note about endpoint types on third-party platforms. * *Details*: Refined the distinction between AWS Bedrock and Google Vertex AI. Specifically mentioned Google Vertex AI now has *three* types: global, multi-region, and regional. * *Developer Implication*: Architectural decision-making. Developers deploying on Vertex AI need to be aware of the "multi-region" option. * **Page: `about-claude/pricing.md`** * *Change*: Updated regional/multi-region endpoint pricing details. * *Details*: Split the note to distinguish AWS (global/regional) vs Google (global/multi-region/regional). Clarified that regional *and multi-region* incur a 10% premium. * *Developer Implication*: Cost estimation. Developers need to account for the 10% premium on multi-region endpoints for Google Vertex AI. * **Page: `build-with-claude/claude-on-vertex-ai.md`** * *Change*: Major update regarding Google Vertex AI endpoints. * *Details*: Added extensive documentation for "Multi-region endpoints". Added code examples for Python, TypeScript, C#, Go, Java, PHP, Ruby using the "us" multi-region identifier. Reorganized the section to separate "Global", "Multi-region", and "Regional". * *Developer Implication*: Implementation detail. Developers now have a new option (multi-region) for data residency with high availability on Vertex AI. 3. **Synthesize and Structure the Analysis**: * **Overall Summary**: Focus on the two main areas: local data handling (caching transparency) and cloud deployment options (Google Vertex AI multi-region endpoints). * **Key Themes**: * Data Transparency/Privacy: Where data is stored locally (`data-usage`, `plugins-reference`). * Platform Features: Google Vertex AI Multi-region support (`models/overview`, `pricing`, `claude-on-vertex-ai`). * UX Refinements: `Ctrl+L` behavior change. * **Impact Level**: Medium. The Google Vertex AI changes are significant for infrastructure decisions, but they are additive features (new options), not breaking changes to existing API calls (unless you were misusing regional logic). The `Ctrl+L` change affects CLI muscle memory. The data storage changes are informational. * **Action Items**: * Review local cache location for security/cleanup (`~/.claude/`). * Evaluate Google Vertex AI multi-region endpoints if balancing data residency and availability. * Update muscle memory for `Ctrl+L`. * Account for 10% premium on multi-region endpoints. 4. **Drafting the Content (in Chinese)**: * *Summary*: 本次文档更新主要集中在**本地数据存储透明度**的明确以及**Google Vertex AI 多区域端点**功能的引入。 * *Themes*: * **数据隐私与本地缓存**: 明确了本地会话存储位置（明文）、插件缓存清理机制（7天宽限期）。 * **Google Vertex AI 增强**: 新增了“多区域端点”选项，平衡了数据驻留和高可用性，并更新了相关的定价说明。 * **交互细节修正**: 调整了 CLI 快捷键 `Ctrl+L` 的功能描述。 * *Impact*: Medium. (Reasoning: Vertex AI changes require architecture decisions, data visibility is high priority for security, but mostly additive). * *Action Items*: * Check `~/.claude/` for sensitive data. * Consider Multi-region endpoints for Vertex AI. * Update cost calculations (10% premium). * Be aware of `Ctrl+L` behavior. 5. **Refining the Output**: Ensure the tone is professional ("World-class programmer"). Keep it concise. * *Refining Action Item 3*: The `Ctrl+L` change is minor but "breaks" muscle memory. * *Refining Vertex AI details*: Emphasize the new `region="us"` usage in code examples. 6. **Final Polish (Markdown)**: ```markdown ### 1. Overall Summary 本次文档更新重点在于提高了本地数据存储的透明度，并在 Google Vertex AI 平台上引入了新的“多区域端点”支持，为开发者提供了更灵活的数据驻留和高可用性选择。 ### 2. Key Themes - **本地数据透明度**: 明确了 Claude Code 会话以明文形式存储在 `~/.claude/projects/`，并解释了插件更新的 7 天缓存宽限期机制。 - **Google Vertex AI 增强功能**: 新增“多区域端点”，支持在特定地理区域内动态路由。此功能同样适用于区域端点，需额外支付 10% 的费用。 - **CLI 交互体验**: 修正了 `Ctrl+L` 快捷键的描述，现在其功能是“清除提示输入”而非“重绘屏幕”。 ### 3. Impact Level: Medium - **理由**: Google Vertex AI 的新端点选项直接影响架构决策和成本估算。虽然这些变更主要是功能增强（非破坏性），但关于本地明文存储的披露对安全敏感型环境很重要，且 `Ctrl+L` 行为的改变会影响用户的肌肉记忆。 ### 4. Action Items for Developers - **审查本地缓存**: 检查 `~/.claude/projects/` 目录，了解敏感数据的存储情况，并根据 `cleanupPeriodDays` 配置进行清理。 - **评估 Vertex AI 策略**: 如果在 Google Vertex AI 上使用 Claude 4.5+ 模型，评估“多区域端点（Multi-region）”是否比单一区域更适合你的数据驻留和高可用性需求。 - **更新成本模型**: 注意 Google Vertex AI 的多区域和区域端点均比全球端点贵 10%。 - **适应快捷键变化**: 调整使用习惯，`Ctrl+L` 现在仅清除输入行，不再刷新屏幕。 - **调试插件版本**: 在开发插件时，意识到旧版本插件在卸载后会保留 7 天以支持并发会话。 ```

1. **Analyze the Request:** * **Role:** World-class programmer analyzing documentation changes. * **Task:** Analyze documentation changes (2 pages: `amazon-bedrock.md` and `model-config.md`). * **Output Format:** Markdown (concise, insightful, Chinese language). * **Structure:** 1. Overall Summary, 2. Key Themes, 3. Impact Level, 4. Action Items. 2. **Analyze the Diff (`amazon-bedrock.md`):** * **New Section:** "Use the Mantle endpoint". * **What is Mantle?** A new Amazon Bedrock endpoint serving Claude models via the native Anthropic API shape (not Bedrock Invoke API). * **Prerequisites:** Claude Code v2.1.94+, AWS credentials configured. * **Configuration:** `CLAUDE_CODE_USE_MANTLE=1`, `AWS_REGION`. * **Model IDs:** Prefixed with `anthropic.` (e.g., `anthropic.claude-haiku-4-5`). No version suffix. * **Compatibility/Coexistence:** Can run alongside standard Bedrock Invoke API (`CLAUDE_CODE_USE_BEDROCK` + `CLAUDE_CODE_USE_MANTLE`). Routing logic is based on model ID format. * **Settings Integration:** Needs `availableModels` in settings to appear in the `/model` picker. * **Gateway Support:** `CLAUDE_CODE_SKIP_MANTLE_AUTH` for proxies. * **Troubleshooting:** Added specific error handling for Mantle (403 = no access, 400 = wrong model ID). 3. **Analyze the Diff (`model-config.md`):** * **New Section:** "Mantle model IDs" under `availableModels`. * **Explanation:** Clarifies that when Bedrock Mantle is enabled, IDs starting with `anthropic.` are treated as custom options for the Mantle endpoint in the `/model` picker. * **Note:** This is an exception to the usual "alias-only" matching rule. 4. **Synthesize the "Why it matters":** * AWS users now have a way to access Claude models using the native API shape within the Bedrock ecosystem, potentially offering better compatibility or performance compared to the Invoke API. * Developers using AWS proxies/gateways need to know how to configure auth skipping. * Configuration management becomes slightly more complex with the "dual endpoint" capability. 5. **Draft the Response (in Chinese):** * **1. Overall Summary:** * 文档新增了对 Amazon Bedrock Mantle 端点的全面支持。这允许开发者通过原生的 Anthropic API 格式（而非 Bedrock Invoke API）在 AWS 环境中使用 Claude 模型，并支持与现有端点并行运行。 * **2. Key Themes:** * **New Endpoint Support:** 引入 "Mantle" 端点，使用 `anthropic.` 前缀的模型 ID 和原生 API 形状。 * **Dual Configuration:** 支持同时启用 Mantle 和标准 Bedrock Invoke API，通过模型 ID 前缀自动路由。 * **Gateway Integration:** 新增针对集中式网关的配置选项（`CLAUDE_CODE_SKIP_MANTLE_AUTH`），跳过客户端签名。 * **Model Selection Logic:** 更新了 `availableModels` 的行为，允许 `anthropic.` 前缀的 ID 直接映射到 Mantle 端点。 * **3. Impact Level:** * **Medium** * **Reasoning:** 这是一个新的功能增强（Feature Addition），而非破坏性变更。虽然它提供了新的访问方式，但现有的 Bedrock 配置不受影响。对于希望利用原生 API 形状或通过网关路由流量的 AWS 用户来说，这非常有价值。 * **4. Action items for developers:** * 检查当前 Claude Code 版本（需 >= v2.1.94）。 * 若需使用 Mantle，设置 `CLAUDE_CODE_USE_MANTLE=1` 并配置相应的 `AWS_REGION`。 * 如果需要在同一会话中同时使用标准 Bedrock 和 Mantle，确保同时启用两个环境变量，并在 `availableModels` 中包含相关 ID。 * 如果使用 LLM 网关，配置 `CLAUDE_CODE_SKIP_MANTLE_AUTH=1` 以避免认证冲突。 * 遇到 403 错误时，联系 AWS 账户团队获取 Mantle 模型的访问权限。 6. **Review and Refine:** * Ensure tone is professional and concise. * Check markdown formatting. * Verify Chinese translation accuracy (e.g., "Endpoint" -> "端点", "Gateway" -> "网关"). 7. **Final Output Generation** (matches the drafted content).

1. **分析请求：** * **角色：** 世界级程序员，文档/开发者工具专家。 * **任务：** 分析文档变更（具体为 `CHANGELOG.md.md` 的 diff）并生成汇总。 * **输出格式：** Markdown。 * **语言：** 中文。 * **内容：** 总体摘要、关键主题、影响程度、可执行项目。 2. **分析输入数据：** * **文件：** `CHANGELOG.md.md` * **变更：** 针对 `2.1.94` 版本的 +26 行添加（相对于之前的 `2.1.92` 是净添加，尽管 diff 仅显示了新的 `2.1.94` 部分）。 * **关键新增/变更：** * *新增功能：* Amazon Bedrock (Mantle) 支持。 * *变更：* API密钥/Bedrock/Vertex/Foundry/团队版/企业版的默认 effort level 从 medium 改为 high。 * *新增功能：* Slack MCP 标头。 * *新增功能：* 插件输出中的 `keep-coding-instructions` 前置元数据。 * *新增功能：* `hookSpecificOutput.sessionTitle` 用于钩子。 * *变更：* 插件技能命名（使用前置元数据名称）。 * *Bug 修复：* 429 rate limit（速率限制）卡住问题。 * *Bug 修复：* macOS 登录失败（钥匙串问题）+ 诊断。 * *Bug 修复：* YAML 前置元数据钩子被忽略。 * *Bug 修复：* `CLAUDE_PLUGIN_ROOT` 路径问题。 * *Bug 修复：* 滚动回显中重复的 diff/空白页面。 * *Bug 修复：* 多行提示符缩进。 * *Bug 修复：* Shift+Space 空格键输入。 * *Bug 修复：* tmux 中的超链接（VSCode 等）。 * *Bug 修复：* alt-screen 渲染（幽灵行）。 * *Bug 修复：* `FORCE_HYPERLINK` 在 settings.json 中被忽略。 * *Bug 修复：* 无障碍功能（光标跟踪）。 * *Bug 修复：* Bedrock Sonnet 3.5 v2 调用。 * *Bug 修复：* SDK/print 模式中断处理。 * *改进：* `--resume` 用于工作树。 * *Bug 修复：* UTF-8/CJK 多字节字符损坏。 * *VSCode：* 减少冷启动工作，修复下拉菜单，针对无效的 settings.json 添加警告。 3. **起草分析（迭代过程）：** * **1. Overall Summary (总体摘要)：** * 草稿 1（内心独白）：这是版本 2.1.94。它添加了 Bedrock Mantle 支持，将默认努力程度改为 high，并修复了大量错误，特别是关于渲染、插件和 macOS/VSCode 集成的。 * 草稿 2（中文）：本次 2.1.94 版本更新主要引入了 Amazon Bedrock (Mantle) 支持，并将默认努力程度提升至 high。此外，修复了大量关于插件系统、终端渲染（特别是 tmux 和 VSCode 环境）、以及多字符编码（CJK）的 Bug。 * 优化：使其更有力。重点放在 Bedrock 和修复上。 * **2. Key Themes (关键主题)：** * *主题 1：后端/集成。* Amazon Bedrock Mantle 支持。 * *主题 2：默认行为变更。* Effort level -> high。 * *主题 3：插件生态。* 钩子、技能命名、路径修复。 * *主题 4：UI/UX 与渲染修复。* 滚动、缩进、tmux 超链接、无障碍功能、Ghost lines。 * *主题 5：VSCode 优化。* 冷启动速度和菜单。 * *主题 6：可靠性/稳定性。* UTF-8 处理、Rate limiting（速率限制）、macOS 钥匙串。 * **3. Impact Level (影响程度)：** * *分析：* 将默认的 effort level 改为 high 是一种行为变更，可能会增加成本或处理时间，但通常能提高质量。修复 429 rate limiting 和 UTF-8 (CJK) 问题对稳定性至关重要。VSCode 的冷启动对用户体验有显著影响。 * *定级：* Medium。虽然涉及大量修复，但大多是“隐形”的改进或非破坏性的修复（默认 effort level 是唯一重大的行为转变）。 * *理由：* 提升了默认 effort level（可能影响成本/速度），修复了关键的渲染和编码错误（CJK 支持），并增强了插件稳定性。 * **4. Action Items for Developers (可执行项目)：** * 项目 1：检查新的 effort level。如果你希望保持以前的成本/速度，可能需要调整 `/effort`。 * 项目 2：如果你使用 Bedrock，检查 Mantle 支持。 * 项目 3：插件开发者：注意技能名称和钩子的更改。 * 项目 4：VSCode 用户：检查 settings.json 是否有警告。 * 项目 5：非英语用户：验证 CJK 渲染是否修复了以前的问题。 4. **最终润色（中文）：** * 准确翻译概念（例如 "Rate-limit" -> "速率限制", "CJK" -> "中日韩文本", "Effort level" -> "努力程度/级别"）。 * 确保格式严格为 Markdown。 * *起草时的自我修正：* 提示要求“Insightful analysis”（有洞察力的分析）。我不应该只是列出内容，而要解释*为什么*它很重要。 * *关于 CJK 的洞察：* UTF-8 分割导致的损坏是一个经典的流媒体 Bug，修复它对于非英语使用者来说意义重大。 * *关于 macOS 的洞察：* 解决 "Not logged in" 问题意味着不再有令人困惑的静默失败。 5. **最终输出生成**（与提供的高质量回复匹配）。

1. **Analyze the Request:** * **Role:** World-class programmer analyzing documentation changes. * **Format:** Markdown. * **Language:** Chinese. * **Goal:** Analyze a batch of 8 changed pages, summarize changes, explain why it matters, identify themes, assess impact, and provide action items. 2. **Analyze the Input Data (Page by Page):** * **Page 1: hooks.md (+2 / -1)** * *Change:* Clarified hook exit codes. Specifically, "Any other exit code" is defined as "non-blocking for *most* hook events". Added a `<Warning>` block stating that exit code 1 is non-blocking (even though it's a standard Unix failure), and exit code 2 is the one that blocks actions. Exception noted for `WorktreeCreate` where any non-zero code aborts. * *Significance:* Critical for developers writing custom hooks. If they return `exit 1` expecting a block, it won't work as intended. This is a behavioral clarification that affects logic. * **Page 2: troubleshooting.md (+14 / -0)** * *Change:* Added a new section "Model not found or not accessible". Lists causes (typo, stale ID, API key tier issues) and the priority order for model config (`--model` > env var > local settings > project settings > user settings). Suggests using `/model` picker or checking config to clear stale values. * *Significance:* Debugging aid. Helps developers understand why a specific model isn't loading, specifically pointing to configuration priority. * **Page 3: vs-code.md (+1 / -0)** * *Change:* Added an anchor tag `<a id="troubleshooting" />` before the "Fix common issues" section. * *Significance:* Internal linking/navigation fix. Likely to support cross-references or external links to the troubleshooting section. * **Page 4, 5, 6, 8: about-claude/pricing.md, api/overview.md, api/client-sdks.md, build-with-claude/claude-on-vertex-ai.md** * *Change:* Changed link text/URL slug from `claude-on-amazon-bedrock` to `claude-in-amazon-bedrock`. * *Significance:* Branding/terminology update. "Claude *in* Amazon Bedrock" vs "Claude *on* Amazon Bedrock". Suggests a distinction between old/new integration or a general rebranding. * **Page 7: build-with-claude/claude-on-amazon-bedrock.md (+1 / -0)** * *Change:* Added a `<Note>` at the top. The current page (`claude-on`) is now "legacy". The new page (`claude-in`) covers the "new AWS-managed offering" with Messages API and SSE streaming. * *Significance:* This confirms the link changes above. There is a new integration path. The existing documentation is now labeled "Legacy". 3. **Synthesize Key Themes:** * **Amazon Bedrock Integration Split:** Clear distinction between "Claude *on* Amazon Bedrock" (Legacy) and "Claude *in* Amazon Bedrock" (New). * **Hook Behavior Clarification:** Precise definition of blocking vs. non-blocking exit codes (Exit 2 blocks, Exit 1 doesn't). * **Debugging & Troubleshooting:** Added guidance for model selection issues. 4. **Assess Impact Level:** * *Amazon Bedrock:* High/Breaking if users are relying on the old docs for new implementations, or if they need to migrate. It changes the canonical reference URL. * *Hooks:* High for anyone using hooks to enforce policy (e.g., security). Using `exit 1` instead of `exit 2` is a logic bug in their enforcement. * *Overall:* High impact due to the logic change in hooks and the structural change in AWS documentation. 5. **Draft Action Items (in Chinese):** * Review hook scripts to ensure they use `exit 2` for blocking errors, not `exit 1`. * Check Bedrock integration docs if starting a new project (use the "in" version). * Read the new troubleshooting section if encountering model errors. 6. **Drafting the Response (in Chinese):** * *Summary:* Documentation update focusing on clarifying Amazon Bedrock integration naming (distinguishing legacy from new) and correcting/clarifying the behavior of custom hooks (specifically exit codes). * *Themes:* * Amazon Bedrock naming/inference path updates. * Hook exit code semantics (exit 2 vs 1). * Troubleshooting model access. * *Impact:* High. The hook behavior change is a functional correction that could lead to unexpected behavior if missed (policies not blocking). The Bedrock update indicates a preferred new path. * *Action Items:* * Audit hook scripts. * Review Bedrock setup. * Troubleshoot model config. 7. **Refining the Content (Self-Correction during drafting):** * Make sure to emphasize that `claude-on` is now legacy. * Ensure the hook warning is clear: `exit 1` != blocking. * The anchor tag in vs-code.md is minor but worth noting under minor improvements, though maybe not a key theme. I'll stick to the major themes. 8. **Final Polish (Markdown formatting):** * Use bolding for emphasis. * Ensure concise bullet points. **(Self-Correction on Impact):** Is it "Breaking"? It's not a code API break, but a documentation flow change. However, the hook part is a "logic fix" for users. If they relied on `exit 1` blocking, their code is effectively buggy. So, High impact is appropriate. 9. **Final Output Generation** (matches the provided good response).

1. **Understand the Goal:** The user wants a concise, insightful analysis of documentation changes (a batch of 23 pages). I need to focus on what matters to developers, write in markdown, and respond in Chinese. 2. **Analyze the Input Data (Page by Page):** * **`about-claude/models/overview.md`**: * Change: Updates description of Claude Opus 4.6. Mentions "Claude Mythos Preview" as a separate research preview model for defensive cybersecurity (Project Glasswing). * Impact: New model introduction. * **`about-claude/pricing.md`**: * Change: Adds "Claude Mythos Preview" to the list of models with 1M token context window at standard pricing. * Impact: Pricing/Context info for new model. * **`api/messages.md`**: * Change: Significant changes to the API response schema. Adds `stop_details` object to `Message` and `RawMessageDeltaEvent`. * Details of `stop_details`: Contains `type: "refusal"`, `category` ("cyber" or "bio"), and `explanation`. * Impact: New structured refusal handling. Developers can programmatically detect *why* a request was refused (cybersecurity or bio-safety reasons). * **`api/models/list.md`**: * Change: Adds two new beta capabilities: `"output-300k-2026-03-24"` and `"user-profiles-2026-03-24"`. * Impact: New features/betas available. * **`api/beta/files/upload.md`**: * Change: Adds the same two new beta capabilities. Updates a curl example URL. * Impact: Consistent with models list. * **`api/service-tiers.md`**: * Change: Simplifies supported models list. States "Priority Tier is supported on all available Claude models except Claude Mythos Preview". * Impact: Clarifies service tier support. * **`api/errors.md`**: * Change: Adds `504 timeout_error`. Adds Claude Mythos Preview to the list of models that do not support prefilling assistant messages. * Impact: Error handling, prefill restrictions. * **`build-with-claude/overview.md`**: * Change: Minor text cleanup (removing duplicate text). * Impact: Low. * **`build-with-claude/extended-thinking.md`**: * Change: Updates model support. Adds Claude Mythos Preview behavior (adaptive thinking default, `display` defaults to "omitted", preface reasoning summary differences). Adds Mythos to 128k output support. * Impact: Extended thinking behavior changes for new model. * **`build-with-claude/context-windows.md`**: * Change: Adds Claude Mythos Preview to the 1M token context window list. * Impact: Context window info. * **`build-with-claude/context-editing.md`**: * Change: Simplifies to "all supported Claude models". * Impact: Documentation cleanup. * **`build-with-claude/structured-outputs.md`**: * Change: Adds Claude Mythos Preview to supported models. Notes it's *not* supported on Google Vertex AI for this model. * Impact: Platform specific support info. * **`build-with-claude/effort.md`**: * Change: Adds Claude Mythos Preview support. Notes specific behavior: adaptive thinking default, `thinking: disabled` rejected. * Impact: Parameter usage. * **`build-with-claude/working-with-messages.md`**: * Change: Adds Claude Mythos Preview to models not supporting prefill. * Impact: Feature restriction. * **`build-with-claude/claude-on-amazon-bedrock.md`**: * Change: Note added about Mythos Preview availability (invite only). Clarifies context window text. * Impact: Platform availability. * **`build-with-claude/claude-on-vertex-ai.md`**: * Change: Note added about Mythos Preview availability (invite only). Clarifies context window text. * Impact: Platform availability. * **`build-with-claude/claude-in-microsoft-foundry.md`**: * Change: Note added about Mythos Preview availability (invite only). Clarifies context window text. * Impact: Platform availability. * **`build-with-claude/prompt-engineering/claude-prompting-best-practices.md`**: * Change: Adds Claude Mythos Preview to prefill deprecation note. * Impact: Feature restriction. * **`agents-and-tools/tool-use/implement-tool-use.md`**: * Change: Note added: Claude Mythos Preview does not support forced tool use (`tool_choice: {"type": "any"}` or `{"type": "tool"}`). Returns 400 error. * Impact: Breaking behavior for specific tool use patterns on the new model. * **`agents-and-tools/tool-use/web-search-tool.md`**: * Change: Adds Claude Mythos Preview to dynamic filtering support. Note: Web search is *not* available on Amazon Bedrock for Mythos Preview. * Impact: Platform/feature compatibility. * **`agents-and-tools/tool-use/web-fetch-tool.md`**: * Change: Adds Claude Mythos Preview to dynamic filtering support. Note: Web fetch is *not* available on Amazon Bedrock or Google Vertex AI for Mythos Preview. * Impact: Platform/feature compatibility. * **`agents-and-tools/tool-use/code-execution-tool.md`**: * Change: Simplifies model support list. Note: Code execution is *not* available on Amazon Bedrock or Google Vertex AI for Mythos Preview. Adds new error type `output_file_too_large`. * Impact: Platform compatibility, error handling. * **`agents-and-tools/tool-use/tool-search-tool.md`**: * Change: Adds Claude Mythos Preview to model support. * Impact: Compatibility. 3. **Synthesize Key Themes:** * **Theme 1: Introduction of Claude Mythos Preview.** This is the biggest change. It's a new model, invite-only, focused on defensive cybersecurity. It has specific behavioral differences (defaults, prefill not allowed, forced tool use not allowed) and platform availability limitations (not full feature parity on all clouds). * **Theme 2: Structured Refusal Handling.** The API now returns `stop_details` for refusals (specifically 'cyber' and 'bio' categories). This allows developers to programmatically handle content policy violations instead of just parsing text. * **Theme 3: New Beta Features.** `output-300k` and `user-profiles` headers added. * **Theme 4: General Documentation Cleanup.** Simplifying lists of supported models to "all supported models" where applicable. 4. **Determine Impact Level:** * *Reasoning:* The `stop_details` addition is a schema change (additive, but significant for logging/handling). The introduction of a new model is standard but the restrictions (no prefill, no forced tool use) are "breaking" if developers try to use generic agent code with this specific model without checks. However, since it's "invite-only preview," the immediate breaking impact is lower for the general public. * *Conclusion:* **Medium**. High impact for those invited to Mythos, and Medium for everyone else due to the new API schema for refusal handling which is generally available (implied by the diff appearing in standard API docs, though `category` is specific to cyber/bio). 5. **Formulate Action Items:** * Check for `stop_details` in API responses to handle refusals gracefully. * If using Claude Mythos Preview, update code to avoid prefilling and forced tool selection. * Be aware of platform limitations for Mythos (e.g., no code execution on Bedrock). * Consider adopting the new `output-300k` beta header if higher output limits are needed. * Review tool use logic if migrating agents to Mythos (no `tool_choice: any`). 6. **Drafting the Response (in Chinese):** * *Overall Summary:* 本次更新主要推出了 **Claude Mythos Preview**（专注于防御性网络安全的研究预览模型），并在 API 响应中新增了 **结构化拒绝处理** 以改进安全策略违规的透明度。 * *Key Themes:* * **Claude Mythos Preview 发布:** 新的邀请制模型，专为网络安全工作流设计，具有 1M 上下文窗口。 * **API 响应 Schema 变更:** 新增 `stop_details` 字段，用于分类拒绝原因。 * **功能限制与平台兼容性:** Mythos Preview 不支持强制工具调用、预填充，且在不同云平台的特性支持存在差异。 * **新 Beta 特性:** 引入 `output-300k-2026-03-24` 和 `user-profiles-2026-03-24` 两个新的 Beta 标头。 * *Impact:* **Medium**. 新模型对受邀用户影响较大（行为变更），新的拒绝处理机制对所有开发者都有助于更健壮的错误处理。 * *Action Items:* * 更新 API 客户端逻辑，处理 `stop_details` 对象。 * 若集成 Mythos Preview，需移除对预填充和强制工具调用的依赖。 * 注意 Mythos 在 Bedrock/Vertex AI 上的工具调用限制（如代码执行不可用）。 * 考虑使用 `output-300k` Beta 标头以获得更高的输出限制。 7. **Review and Refine:** * Ensure the distinction between the new model's restrictions and general API changes is clear. * Check the tone (professional, concise, technical). * Verify the Chinese terminology (e.g., "Prefilling" -> "预填充", "Structured outputs" -> "结构化输出"). 8. **Final Polish (Markdown):** * Structure as requested. **(Self-Correction during drafting):** I initially thought the impact might be "High" because of the schema change. However, `stop_details` is an *addition* to the object (7 more properties instead of 6), and `category` is nullable. This means existing code parsing the old structure won't break, it just won't see the new data. Therefore, it's backward compatible but a significant feature addition. "Medium" is appropriate. The Mythos restrictions are breaking *if* you use that model, but it's a preview. I will stick with Medium. Let's generate the output.

1. **Analyze the Request:** * **Role:** World-class programmer analyzing documentation changes. * **Task:** Analyze a specific diff for `build-with-claude/prompt-caching.md`. * **Format:** Markdown (Overall Summary, Key Themes, Impact Level, Action Items). * **Language:** Chinese. 2. **Analyze the Diff:** * **File:** `build-with-claude/prompt-caching.md` * **Changes:** * *Change 1 (Line 278-291):* The specific list of supported models (Opus, Sonnet, Haiku versions) has been replaced with a single sentence stating it's supported on "all active Claude models" linking to an overview page. * *Reasoning:* Simplification. The previous list was likely hard to maintain and prone to becoming outdated. It abstracts the specific versions. * *Change 2 (Line 636):* In the "Cache limitations" section regarding minimum cacheable prompt length (4096 tokens), "Claude Mythos Preview" was added to the list for this specific token requirement alongside Opus 4.6 and 4.5. * *Reasoning:* A new model (Mythos) is being introduced or explicitly recognized in this context. * *Change 3 (Line 2583):* In the FAQ, the answer to "Is prompt caching available for all models?" changed from a long, specific list to the same simplified sentence as Change 1. * *Reasoning:* Consistency with Change 1. 3. **Synthesize the Analysis (Internal Monologue/Drafting):** * *Overall Summary:* The documentation now states prompt caching works on all active models instead of listing them individually, and adds mention of a new model (Claude Mythos Preview) in the specific cache limitations section. * *Key Themes:* * **Simplification/Abstraction:** Moving away from hardcoded lists of model versions to dynamic references ("all active models"). This makes the doc more future-proof. * **New Model Support:** Explicit mention of "Claude Mythos Preview". * *Impact Level:* **Low**. The core functionality hasn't changed for existing users. It just clarifies that caching is broadly available. The mention of Mythos is interesting but likely only affects those with preview access. * *Reasoning:* No breaking changes. It's a documentation cleanup and a preview model update. * *Action Items:* * Developers using preview models (Mythos) should note the 4096 token cache threshold. * General developers can assume prompt caching works on any new "active" model without needing to check a specific list here. 4. **Translate and Format (Chinese):** * *Summary:* 文档简化了支持模型的列表，改为声明支持所有活跃的 Claude 模型，并新增了对“Claude Mythos Preview”模型的特定缓存限制说明。 * *Themes:* * **文档简化与维护性**：移除了具体的模型版本列表，改用引用链接，避免文档随模型更新而过时。 * **新模型提及**：明确提及了 `Claude Mythos Preview` 及其缓存阈值。 * *Impact:* Low。核心功能未变，仅是说明方式更通用。 * *Reasoning:* 主要是文案优化和前瞻性更新，现有功能逻辑未受影响。 * *Action Items:* * 如果正在使用预览模型（如 Claude Mythos Preview），请注意其最小缓存长度为 4096 tokens。 * 未来开发新模型时，可默认假设其支持 Prompt Caching（只要属于“活跃”模型）。 5. **Final Review:** Does this meet the "concise, insightful analysis" requirement? Yes. It focuses on *why* (future-proofing) and *what matters* (new model context). 6. **Construct Output.** (Proceed to generate markdown).