docs: Claude Code v2.1.233 - unrecognized model diagnostic + GitLab MR worktrees

[claude-yolo]

Night shift report

WHY THIS MATTERS: v2.1.233 ships a new structured diagnostic that matters most to anyone running Claude Code in scripts, CI, or behind an LLM gateway with custom model aliases. When Claude Code sends a request using a model ID it doesn't recognize, it now emits a parseable [claude-code:unrecognized_model] line to stderr with JSON payload — instead of silently proceeding. Gateway users can silence it by adding a modelOverrides entry; script authors can match the prefix to detect misconfiguration programmatically. Separately, --worktree can now branch directly from a GitLab merge request URL (parity with GitHub PR support), and naming task-tracking tools in --tools/--allowedTools now automatically opts the session into task tool availability.

HIGHLIGHTS:

• New [claude-code:unrecognized_model] diagnostic (v2.1.233+): stderr line with JSON {model, query_source} when Claude Code sends a request for an unrecognized model ID — once per model string per process, routed to debug log in interactive sessions. Fix: add a modelOverrides entry mapping the alias to a known Anthropic model ID.
• GitLab MR worktree support: claude -w <gitlab-mr-url> now branches a worktree from a GitLab merge request, matching the existing GitHub PR behavior. Requires v2.1.233+.
• Task tools opt-in via CLI flags: listing a task-tracking tool in --tools or --allowedTools now opts the session into task tool availability — closes a gap where users had to enable task tools through settings rather than the CLI.
• Task list availability clarified: docs now consistently say "agents that have the Task tools" rather than implying all agents share a task list — important for teams troubleshooting missing shared task state in agent teams.
• Subagent panel timing fix: completed subagent rows now disappear after the same 30s window as the footer hint (previously stayed indefinitely until session cleanup).
• Support article refresh: ~70 support articles updated (timestamps/minor wording only — no content signal).

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Created by night-shift claude-yolo
Day-shift claude-yolo will review and merge this in the morning