Claude Code v2.1.202: /review revert, workflow sizing, 20+ fixes

Anthropic released Claude Code v2.1.202, a maintenance release that brings one new feature, several improvements, and over a dozen bug fixes. Most notably, /review <pr> is back to a fast single-pass review, and the multi-agent review is now under /code-review <level> <pr#>.

What's New

Dynamic workflow size setting in /config: You can now set an advisory guideline for how large Claude makes dynamic workflows (small/medium/large agent counts). It's not a hard cap — just a hint for the agent.
OpenTelemetry attributes added to workflow-spawned agents: workflow.run_id and workflow.name are now emitted, letting you reconstruct a workflow run's activity from telemetry data.

Key Fixes

/review reverted: /review <pr> is again a single-pass review. Use /code-review <level> <pr#> for the multi-agent review with a chosen effort level.
Ctrl+R history search crash: Fixed a crash when accepting or cancelling the inline search while it was still scanning the history file.
/rename on background sessions: The name is no longer reverted on job restart, so you can reliably address the session by its new name.
mTLS handshake failures: Transient failures during in-place client certificate rotation are fixed — settings re-application no longer drops connections.
Remote Control commands: Commands sent from mobile/web into an interactive session no longer fail with "Unknown command".
Remote Control file uploads: Images and files sent without a caption are no longer silently dropped.
Sign-in URL wrapping over SSH: The URL printed by claude auth login and claude mcp login --no-browser is now emitted as a single hyperlink, making it reliably clickable.
Agent chat crash: Opening a chat from claude agents no longer fails with "currently running as a background agent" followed by a crash/respawn loop.
Workflow script parsing: Unicode quote escapes in strings are now handled correctly before parsing. Parse errors show the offending line instead of always blaming TypeScript.
Voice dictation loop: Repeated microphone or audio recorder failures now pause voice input instead of retrying unboundedly.
Remote Control permission mode: Fixed incorrect permission mode shown in mobile and web apps for /remote-control sessions.
Session resume with many git worktrees: Resuming a session by name or opening the resume picker no longer takes minutes and uses excessive memory.
Installer download retries: Transient connection drops from proxies or networks now retry instead of failing immediately with "aborted".
Skill re-invocation: Re-invoking an already-loaded skill no longer appends a duplicate copy of its instructions to context.

Improved

/workflows agent list: Layout now has wider titles, a dedicated time column, shorter model names, and no per-row tool-call counts.
MCP error messages: When a server config has url but no type, the error suggests "type": "http" instead of the misleading "command: expected string".

For those of you who relied on the multi-agent /review, remember to update your muscle memory (or aliases) to /code-review.

📖 Read the full source: GitHub Claude-Code