Shadcn

This one's essential if you're working with shadcn/ui in Claude. It knows the CLI commands, handles non-interactive initialization with the `-d` flag (critical for agent use), and understands the January 2026 Base UI support plus the unified Radix package migration. It'll catch AI Elements compatibility issues, guide you through custom registry setup, and use the new `shadcn docs` command to pull component API references inline. The skill activates on `components.json`, ui directory patterns, and CLI invocations, so Claude can add components, troubleshoot theming, and compose interfaces without you explaining how shadcn's copy-not-install model works every time.