# Claude Code v2.1.121 更新：新增功能、体验优化与内存泄漏修复

- 来源：Claude Code：GitHub Releases（RSS）
- 作者：ashwin-ant
- 发布时间：2026-04-28 08:31
- AIHOT 分数：60
- AIHOT 标记：精选
- AIHOT 链接：https://aihot.virxact.com/items/cmoi4scsr00aesle9acywl06s
- 原文链接：https://github.com/anthropics/claude-code/releases/tag/v2.1.121

## 精选理由

Claude Code 这版修了一堆让人抓狂的内存泄漏和崩溃问题，加上 alwaysLoad 和 plugin prune 两个实用功能，重度用户值得立刻升级，但对非用户来说只是例行迭代。

## AI 摘要

本次更新为 Claude Code 带来多项增强与修复。新增功能包括 MCP 服务器的 `alwaysLoad` 配置、`claude plugin prune` 命令以及 `/skills` 界面搜索框。用户体验方面，优化了全屏模式滚动、对话框键盘滚动和长 URL 点击体验。重点修复了处理多张图片或使用 `/usage` 命令时可能出现的数 GB 内存泄漏问题，并解决了 Bash 工具在工作目录被删除后失效等稳定性缺陷。此外，还改进了 MCP 服务器的错误重试机制和终端会话标题的本地化显示。

## 正文

What's changed

Added alwaysLoad option to MCP server config — when true, all tools from that server skip tool-search deferral and are always available

Added claude plugin prune to remove orphaned auto-installed plugin dependencies; plugin uninstall --prune cascades

Added a type-to-filter search box to /skills so you can find a skill in long lists without scrolling

PostToolUse hooks can now replace tool output for all tools via hookSpecificOutput.updatedToolOutput (previously MCP-only)

Fullscreen mode: typing into the prompt no longer jumps scroll back to the bottom after you've scrolled up to read earlier output

Dialogs that overflow the terminal are now scrollable with arrow keys, PgUp/PgDn, home/end, and mouse wheel in both fullscreen and non-fullscreen modes

Clicking any line of a long URL that wraps across rows in fullscreen mode now opens the full URL

SDK and claude -p: CLAUDE_CODE_FORK_SUBAGENT=1 now works in non-interactive sessions

--dangerously-skip-permissions no longer prompts for writes to .claude/skills/, .claude/agents/, and .claude/commands/

/terminal-setup now enables iTerm2's "Applications in terminal may access clipboard" setting so /copy works, including from tmux

MCP servers that hit a transient error during startup now auto-retry up to 3 times instead of staying disconnected

The terminal tab session title is now generated in your configured language setting

Claude.ai connectors with the same upstream URL are now deduplicated instead of appearing as duplicates

Vertex AI: support X.509 certificate-based Workload Identity Federation (mTLS ADC)

Faster startup after upgrading: removed the Recent Activity panel from the release-notes splash

LSP diagnostic summaries now expand on click/ctrl+o and show the expand hint

SDK: mcp_authenticate now supports redirectUri for custom scheme completion and claude.ai connectors

OpenTelemetry: added stop_reason, gen_ai.response.finish_reasons, and user_system_prompt (gated behind OTEL_LOG_USER_PROMPTS) to LLM request spans

[VSCode] Voice dictation now respects the accessibility.voice.speechLanguage setting when no Claude Code language is configured

[VSCode] /context now opens a native token usage dialog

Fixed unbounded memory growth (multi-GB RSS) when processing many images in a session

Fixed /usage leaking up to ~2GB of memory on machines with large transcript histories

Fixed memory leak when long-running tools fail to emit a clear progress event

Fixed Bash tool becoming permanently unusable when the directory Claude was started in is deleted or moved mid-session

Fixed --resume crashing on startup in external builds

Fixed --resume failing on large sessions when a transcript line was corrupted by an unclean shutdown — the corrupt line is now skipped

Fixed thinking.type.enabled is not supported error when using Bedrock application inference profile ARNs

Fixed Microsoft 365 MCP OAuth failing with duplicate or unsupported prompt parameter

Fixed scrollback duplication when pressing Ctrl+L or triggering a redraw in non-fullscreen mode on tmux, GNOME Terminal, Windows Terminal, and Konsole

Fixed claude.ai MCP connectors silently disappearing when the connector-list fetch hits a transient auth error at startup

Fixed "Always allow" rules for built-in tools in remote sessions not surviving worker restarts

Fixed NO_PROXY not being respected for all HTTP clients when set via managed-settings.json under the native build

Fixed managed settings approval prompt exiting the session even when accepted — now applies settings and continues

Fixed /usage returning "rate limited" after a stale OAuth token — now refreshes automatically

Fixed invalid legacy enum values in settings.json invalidating the entire settings file

Fixed /usage dialog content being clipped when no-flicker mode is off

Fixed /focus showing "Unknown command" when the fullscreen renderer is off — now explains how to enable it

Fixed embedded grep/find/rg shell wrappers failing when the running binary is deleted mid-session — now falls back to installed tools

Reduced peak file descriptor usage during find in the Bash tool on large directory trees