Claude Code v2.1.129 の新機能追加と環境変数拡張

What's changed

• Added --plugin-url flag to fetch a plugin .zip archive from a URL for the current session

• Added CLAUDE_CODE_FORCE_SYNC_OUTPUT=1 env var to force-enable synchronized output on terminals that auto-detection misses (e.g. Emacs eat)

• Added CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE: when set on Homebrew or WinGet installations, Claude Code runs the upgrade command in the background and prompts to restart

• Plugin manifests: themes and monitors should now be declared under "experimental": { ... }. Top-level declarations still work but claude plugin validate will warn

• Gateway /v1/models discovery for the /model picker is now opt-in via CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1 (was automatic in 2.1.126–2.1.128)

• Ctrl+R history picker now defaults to searching all prompts across all projects, matching pre-2.1.124 behavior. Press Ctrl+S to narrow to the current project or session

• Third-party deployments (Bedrock, Vertex, Foundry, or ANTHROPIC_BASE_URL gateway) no longer see spinner tips pointing at first-party Anthropic surfaces

• skillOverrides setting now works: off hides from model and /, user-invocable-only hides from model only, name-only collapses description

• The claude_code.pull_request.count OTel metric now counts PRs/MRs created via MCP tools, not just shell commands

• Policy refusal error messages now include the API Request ID for easier support debugging

• Fixed API errors with unrecognized 400 status codes showing raw JSON instead of the underlying error message

• Fixed /clear not resetting the terminal tab title after a conversation

• Fixed session title chip from /rename disappearing while a permission or other dialog is active

• Fixed agent panel below the prompt being hidden when subagents are running (regression in 2.1.122)

• Fixed external-editor handoff (Ctrl+G) blanking the conversation history above the prompt

• Fixed /context dumping its rendered ASCII visualization grid into the conversation, wasting ~1.6k tokens per call

• Fixed /agents Library list arrow-key navigation: the highlighted agent now stays visible when the list exceeds the viewport

• Fixed /branch success message not including the new branch's session id for /resume

• Fixed bold headers with keycap/ZWJ/skin-tone emoji losing trailing characters in fullscreen mode

• Fixed server-managed settings policy not applying for enterprise/team users whose stored OAuth credentials lacked the user:inference scope

• Fixed OAuth refresh race after wake-from-sleep that could log out all running sessions

• Fixed 1-hour prompt cache TTL being silently downgraded to 5 minutes

• Fixed cache-miss warning appearing spuriously after /clear or compaction when changing /effort or /model

• Fixed Bash(mkdir *), Bash(touch *) and similar allow rules not being honored for in-project paths

• Fixed deniedMcpServers patterns with a *:// scheme wildcard not matching mixed-case hostnames

• Fixed harmless WebSocket warning being logged as an error in --debug during voice mode

• [VSCode] Fixed /clear not clearing the conversation context and displayed transcript