Changes on 2026-04-30

1. **Analyze the Request:** * **Role:** World-class programmer, expert in dev tools/docs. * **Task:** Analyze documentation changes in a single batch (Changelog). * **Input:** Diff for `CHANGELOG.md.md` (version 2.1.126 vs previous 2.1.123). * **Output Format:** Markdown with specific sections: Overall Summary, Key Themes, Impact Level, Action Items. * **Language:** Chinese (as requested in the initial prompt "请用中文回复"). 2. **Analyze the Input Data (The Diff):** * **File:** `CHANGELOG.md.md`. * **Version:** `2.1.126`. * **Change Count:** 34 lines added. * **Specific Changes:** * *Gateway Integration:* `/model` picker uses gateway's `/v1/models` endpoint. * *Project Management:* Added `claude project purge [path]` command to clear state (transcripts, tasks, etc.). Supports flags like `--dry-run`, `-y`. * *Permissions:* `--dangerously-skip-permissions` now bypasses prompts for protected paths (`.claude/`, `.git/`, etc.), though catastrophic removal still prompts. * *Auth/OAuth:* Terminal paste support for OAuth code (WSL2, SSH), fixed timeout/login errors on slow/proxied connections/IPv6. * *Telemetry:* Added `claude_code.skill_activated` event with `invocation_trigger` attribute. * *UI/UX:* Spinner turns red on permission stall. Fixed text rendering (JP/KR/CN) on Windows. Fixed scrolling in VS Code/Cursor. Fixed `Ctrl+L` to redraw screen instead of clearing input. * *Deployment:* Host-managed deployments no longer auto-disable analytics on Bedrock/Vertex/Foundry. * *Windows Support:* Detects PS7 (MSI, .NET tool). PowerShell is primary shell when tool is enabled. Clipboard writes fix security issue (EDR/SIEM visibility) and size limit. * *Read Tool:* Removed malware assessment reminder (reduced false refusals). * *Security:* Fixed `allowManagedDomainsOnly` / `allowManagedReadPathsOnly` ignore issue. * *Bug Fixes (General):* Image pasting >2000px (downscaled), OAuth race conditions, "Stream idle timeout" (Mac sleep, long thinking), Agent SDK hang (malformed tool names), deferred tools availability, plan-mode tools, `/plugin` uninstall status, `/remote-control` connection feedback. 3. **Synthesize the Analysis:** * **Overall Summary:** This release focuses on improving enterprise and gateway integrations, enhancing Windows/PowerShell support, and resolving numerous stability/UX bugs. It adds a project purge command and fixes critical security and connectivity issues. * **Key Themes:** * *Gateway & Enterprise Support:* Model picker integration with gateways, host-managed deployment analytics handling. * *Windows & Shell Enhancements:* Better PowerShell detection, security fixes for clipboard, PowerShell as primary shell. * *Reliability & Connectivity:* OAuth improvements for remote environments (WSL2, containers), fixing timeouts, and race conditions. * *UX & Developer Experience:* New purge command, spinner color changes, scroll fixes, input behavior fixes. * *Bug Cleanup:* Fixing image handling, rendering issues, and agent SDK hangs. * **Impact Level:** * *Medium.* There are significant fixes (OAuth, Windows security, Gateway support) but they are largely additive or corrective, not breaking changes. The "Security" fix regarding managed domains is important but likely specific to enterprise setups. The Windows clipboard fix resolves a privacy/EDR issue. * **Action Items:** * Check if your workflow benefits from the new `claude project purge` command. * If using Windows, verify PowerShell 7 detection and updated clipboard behavior. * If using a custom gateway, verify the new `/model` picker behavior. * Review `allowManagedDomainsOnly` security fix if you use managed settings. * Update if you faced issues with OAuth on WSL2/SSH or Japanese text rendering on Windows. 4. **Draft the Response in Chinese:** * *Summary:* 版本 2.1.126 主要增强了企业级网关集成和 Windows/PowerShell 支持，修复了多项连接稳定性与安全漏洞，并新增了项目清理命令。 * *Themes:* * 网关与企业集成 * Windows 与 PowerShell 体验优化 * 连接性与授权修复 (OAuth, WSL2, SSH) * 稳定性与 Bug 修复 * 开发者工具增强 * *Impact:* Medium。虽然没有破坏性变更，但包含重要的安全修复和平台兼容性改进。 * *Action Items:* (Translate the bullets above). 5. **Refine the Output:** Ensure the tone is professional ("world-class programmer") and concise. * *Refining "Themes":* Grouping similar items helps readability. * *Gateway & Integration:* `/model` picker logic. * *Windows/Shell:* PowerShell primary, clipboard security, text rendering. * *Connectivity:* OAuth fixes for non-standard environments. * *UX:* Purge command, spinner colors. * *Refining "Impact":* "Medium" fits best. The "Security" tag in the changelog is notable. * *Refining "Action Items":* Make them actionable for a dev. 6. **Final Polish (Self-Correction during drafting):** * Make sure to mention the specific command `claude project purge` as it's a new feature. * Highlight the clipboard security fix on Windows as it's a privacy concern. * Ensure the translation is natural (e.g., "Gateway" -> "网关", "PowerShell" stays as "PowerShell"). 7. **Final Output Generation** (matches the provided good response).

1. **Analyze the Request:** * **Role:** World-class programmer analyzing documentation changes. * **Input:** A single diff from `memory.md`. * **Task:** Analyze the changes and provide a summary in markdown format (Overall Summary, Key Themes, Impact Level, Action Items). * **Language:** Chinese (as requested in the prompt). * **Constraint:** Concise, insightful, focusing on what matters to developers. 2. **Analyze the Diff:** * **Page:** `memory.md`. * **Change Type:** Text clarification/expansion regarding how `CLAUDE.md` and `CLAUDE.local.md` files are processed and concatenated. * **Original Text:** Explained that files are concatenated, and `CLAUDE.local.md` follows `CLAUDE.md` within a directory, so local notes take precedence within that level. * **New Text:** Adds specific detail about the *order* across the directory tree. It explicitly states that content is ordered from filesystem root down to the working directory (e.g., `foo/CLAUDE.md` comes *before* `foo/bar/CLAUDE.md`). It reiterates that instructions closer to the working directory are read last (implying they take precedence in case of conflicts across directories). It retains the logic about `.local.md` coming after `.md` within the same directory. 3. **Synthesize the Analysis:** * **Overall Summary:** The documentation clarifies the precedence and ordering logic for `CLAUDE.md` configuration files when scanning the directory tree. It explicitly states that the context flows from the root downwards, making instructions in the current working directory take precedence over parent directories. * **Key Themes:** * **Configuration Precedence:** Clarifying which instructions win when there are conflicts. * **Context Assembly:** Explaining exactly how the context window is built (root -> cwd). * **Predictability:** Helping developers understand exactly what the AI "sees" and in what order. * **Impact Level:** * *Level:* Low (or maybe Low-Medium depending on how complex their setup is). * *Reasoning:* It's a documentation change, not a code change. However, it changes the mental model developers need to have if they rely on overriding instructions in subdirectories. It corrects potential misunderstandings about scope. * **Action Items:** * Developers should review their directory structure if they have conflicting `CLAUDE.md` files across parent and child directories. * Understand that subdirectory instructions override parent directory instructions (because they are read last). * Ensure personal overrides (`CLAUDE.local.md`) are placed correctly to take effect as intended. 4. **Drafting the Response (in Chinese):** * *Summary:* 文档更新了 `CLAUDE.md` 文件在上下文构建时的加载顺序逻辑。明确了指令是从文件系统根目录向下加载，直到当前工作目录。 * *Themes:* 配置优先级, 上下文顺序, 覆盖机制. * *Impact:* Low/Medium. 这是一个澄清性质的变更。它修正了开发者对指令如何相互覆盖的理解，特别是关于父子目录之间的关系。 * *Action Items:* 检查多层目录结构中的配置冲突, 利用子目录覆盖父目录规则. 5. **Refining the Output (Markdown & Polish):** * *Summary:* 本次更新澄清了 `CLAUDE.md` 文件在目录树中的加载与拼接顺序，明确指出当前工作目录的指令会覆盖父目录中的同名指令。 * *Themes:* * **指令优先级规则：** 明确了越接近工作目录的指令权重越高（后读入）。 * **上下文构建逻辑：** 解释了上下文是从文件系统根目录自上而下组装的。 * **本地化配置：** 重申了 `CLAUDE.local.md` 在同级目录中总是后于 `CLAUDE.md` 加载。 * *Impact:* **Low**。这是文档层面的澄清，未涉及功能变更，但修正了开发者对配置作用范围的心理预期。 * *Action Items:* * 如果您在父子目录中使用了不同的 `CLAUDE.md`，请确认子目录的指令确实按预期覆盖了父目录。 * 利用这一机制，在通用父配置的基础上，通过子目录针对特定项目进行微调。 6. **Final Review against constraints:** * World-class programmer tone? Yes. * Markdown format? Yes. * Chinese? Yes. * Concise? Yes. 7. **Final Output Generation.** (Proceed to generate output based on step 5).

1. **Analyze the Request:** * **Role:** World-class programmer, documentation analyst. * **Task:** Analyze a batch of documentation changes. * **Format:** Markdown, concise, insightful. * **Language:** Chinese (requested in the prompt "请用中文回复"). * **Input:** Diffs for 7 pages (`about-claude/pricing.md`, `api/messages.md`, `api/messages/count_tokens.md`, `api/messages/batches/create.md`, `api/models/list.md`, `api/beta/files/upload.md`, `build-with-claude/search-results.md`). 2. **Analyze Individual Diffs:** * **Page 1: `about-claude/pricing.md`** * *Change:* Removed the row comparing `[Long context premium]` in the table. * *Context:* It was comparing Sessions vs Messages API regarding long context. * *Implication:* "Long context premium" is likely no longer a separate pricing tier or differentiator in this specific context, or it's now standard/managed by the runtime in a way that doesn't need this specific comparison row. It simplifies the pricing comparison table. * **Page 2: `api/messages.md`** * *Change 1:* `max_tokens`: Added note: "Set to `0` to populate the prompt cache without generating a response." (Also appears in batch API). * *Change 2:* `effort` parameter: Added a new level `"xhigh"` (extra high). Updated description from "4 options" to "2 more" (likely `xhigh` and `max`, or just `xhigh` making it 5 total). * *Implication:* Developers can now "pre-warm" caches by sending requests with `max_tokens=0`. The `effort` parameter now supports an intermediate or higher tier (`xhigh`) between `high` and `max`. * **Page 3: `api/messages/count_tokens.md`** * *Change:* `effort` parameter: Added `"xhigh"`. * *Implication:* Consistent update across API docs regarding the new effort level. * **Page 4: `api/messages/batches/create.md`** * *Change 1:* `max_tokens`: Same prompt caching pre-warming note. * *Change 2:* `effort` parameter: Added `"xhigh"`. * *Implication:* Batch processing also supports the new effort level and cache pre-warming. * **Page 5: `api/models/list.md`** * *Change 1:* Added new capability tag: `"user-profiles-2026-03-24"`. * *Change 2:* Added capability support check for `"xhigh"`. * *Implication:* A new feature "User Profiles" is coming/existing. The `xhigh` effort level is now a discoverable capability via the models list endpoint. * **Page 6: `api/beta/files/upload.md`** * *Change:* Added capability tag: `"user-profiles-2026-03-24"`. * *Implication:* File upload might be related to user profiles, or just a general update of supported beta capabilities list. * **Page 7: `build-with-claude/search-results.md`** * *Change 1:* Formatting changes (hyphens to colons in lists). * *Change 2:* JSON example updated. The `cited_text` now contains the *full* text of the block slice. The description of `start_block_index` and `end_block_index` is clarified (slice of content array). * *Change 3:* Removed sentence: "If the `citations` field is omitted, citations are disabled by default." (Implied behavior or changed elsewhere, but removed explicit text). * *Change 4:* Warning message truncated in the diff provided, likely just formatting or clarification on "all-or-nothing" rule. * *Implication:* Significant clarification on how search result citations work. The `cited_text` is the concatenated text of the range, not just a snippet. Indexing logic is strictly 0-based and slices the array. 3. **Synthesize and Group Themes:** * **Theme A: New `effort` level (`xhigh`)**. This appears in Messages API, Batches, and Models capabilities. * **Theme B: Prompt Caching Optimization**. The `max_tokens=0` trick is a significant developer tip for cost/performance optimization. * **Theme C: New Beta Feature (User Profiles)**. "user-profiles-2026-03-24" appears in capability lists. * **Theme D: Citation Specification Refinement**. Clarification on `cited_text` content and block indexing. * **Theme E: Pricing Clean-up**. Removal of specific "Long context premium" row. 4. **Drafting the Analysis (in Chinese):** * *Overall Summary:* Updates focus on a new inference effort level (`xhigh`), prompt caching optimization techniques, clarification of citation behavior, and the introduction of a new "User Profiles" beta capability. * *Key Themes:* * **New `xhigh` Effort Level**: Added to the `effort` parameter in output configuration, offering more granular control over model performance/cost between `high` and `max`. * **Prompt Cache Pre-warming**: Documented that setting `max_tokens` to `0` allows populating the cache without generating a response, a useful optimization strategy. * **Search Result Citations Clarification**: Refined documentation on how `cited_text` works (it's the full text of the slice) and how block indices are calculated. * **New Beta Capability**: Introduction of `user-profiles-2026-03-24` in capability tags. * *Impact Level:* **Medium**. * *Reasoning:* New features (`xhigh`, `user-profiles`) are additive. The `max_tokens=0` trick is a powerful optimization for existing users. Citation clarifications are important for correct implementation but don't change the core API shape drastically. * *Action Items:* * Test the new `xhigh` effort level to see if it balances cost and quality better than `high` or `max`. * Implement the `max_tokens=0` pattern for pre-warming prompt caches to reduce latency in production. * Update code handling search result citations to align with the clarified `cited_text` behavior (expecting full block text slices). * Check the Models API list endpoint to verify support for `xhigh` and `user-profiles` on specific models. 5. **Review and Refine (Self-Correction):** * *Tone Check:* Ensure it sounds professional and programmer-focused. * *Language:* Chinese. * *Accuracy:* Double-check the `xhigh` placement (between high and max). The diff shows list order: low, medium, high, xhigh, max. Yes. * *Pricing diff:* It removed the row, implying the context window handling is standardized or the premium differentiation is gone from this table. Worth a brief mention or subsumed under general updates. I'll stick to the API changes as they are more impactful for developers. 6. **Final Output Generation:** (Proceeding to generate markdown based on step 4). * *Drafting Chinese text:* * Summary: 更新集中在新增推理努力等级 `xhigh`、提示词缓存预热技巧、搜索结果引用行为的澄清，以及引入新的 Beta 功能“用户画像”。 * Themes: * **新增 `xhigh` 努力等级**：在 Messages 和 Batch API 中引入了 `xhigh` 选项，位于 `high` 和 `max` 之间，提供更细粒度的性能/成本控制。 * **提示词缓存预热**：明确了将 `max_tokens` 设为 `0` 可以在不生成响应的情况下填充缓存，这是一项关键的优化手段。 * **搜索引用规格澄清**：详细说明了 `cited_text` 是完整的内容切片文本，而非摘要，并明确了块索引的计算方式。 * **新 Beta 功能**：添加了 `user-profiles-2026-03-24` 能力标签。 * Impact: Medium. * Actions: 更新调用配置尝试 `xhigh`，利用 `max_tokens=0` 预热缓存，调整引用解析逻辑，检查模型能力支持。 7. **Final Polish:** Ensure formatting matches the requested structure.