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v2.1.191 Feature

This release adds 4 notable features for engineering teams evaluating rollout.

✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Summary

AI summary

Fixed background agents permanently stopping and clarified /voice policy restrictions.

Full changelog

What's changed

  • Added /rewind support for resuming a conversation from before /clear was run
  • Fixed scroll position jumping to the bottom while reading earlier output during a streaming response
  • Fixed background agents resurrecting after being stopped — stopping an agent from the tasks panel is now permanent
  • Fixed /voice showing a generic "not available" message when disabled by an organization's policy — it now explains the restriction
  • Fixed /login URL opening truncated in Windows Terminal when it wraps across lines
  • Fixed Cmd+click on links in fullscreen mode for Ghostty over ssh/tmux
  • Fixed claude agents sending builtin slash commands like /usage to background sessions as prompt text instead of showing a hint
  • Fixed claude agents job rows showing full filesystem paths for pasted images instead of the [Image #N] placeholder
  • Fixed hooks with comma-separated matchers (e.g. "Bash,PowerShell") silently never firing
  • Fixed /permissions Recently-denied tab: approving a denial now persists on close instead of being silently discarded
  • Fixed the agent panel jumping by one row when scrolling the roster past the overflow cap
  • Fixed the welcome splash art overflowing the default 80×24 macOS Terminal window
  • Fixed managed settings: forceRemoteSettingsRefresh now takes effect when set via MDM or file policy, and the fetch sends Cache-Control: no-cache to prevent proxies from serving stale responses
  • Improved sandbox network permission dialog: hosts you allow with "Yes" are now remembered for the rest of the session instead of re-prompting on every connection
  • Improved MCP server reliability: capability discovery (tools/list, prompts/list, resources/list) now retries transient network errors with short backoff
  • Improved MCP OAuth: discovery and token requests now retry once after transient network errors, and headless environments skip the browser popup and go straight to the paste-the-URL prompt
  • Improved MCP error messages: HTTP 404 errors now show the URL and point to your MCP config
  • Improved vim mode prompt-history search (NORMAL /) to hint how to reach slash commands
  • Reduced CPU usage during streaming responses by ~37% by coalescing text updates to 100ms
  • Reduced long-session memory growth from terminal output cache

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Related context

Earlier breaking changes

  • v2.1.215 Claude no longer automatically runs /verify and /code-review skills
  • v2.1.160 Renames dynamic‑workflow trigger keyword from `workflow` to `ultracode`; `workflow` no longer triggers a run
  • v2.1.160 Deprecates and removes the `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE` environment variable; it is now a no‑op
  • v2.1.147 Renames /simplify to /code-review; removes cleanup-and-fix behavior.

Beta — feedback welcome: [email protected]