Skills are knowledge modules referenced by commands, not directly invoked by users. Added user-invocable: false to: - backlog-grooming (used by /groom) - claude-md-writing (used by /update-claude-md) - code-review (used by /review-pr) - issue-writing (used by /create-issue) - roadmap-planning (used by /plan-issues) - vision-management (used by /vision, /manifesto) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>