Set up GitHub Actions CI for lint, typecheck, and tests.
Set up and run Playwright end-to-end tests.
Provides complete shadcn/ui component library patterns including installation, configuration, and implementation of accessible React components. Use when setting up shadcn/ui, installing components, building forms with React Hook Form and Zod, customizing themes with Tailwind CSS, or implementing UI patterns like buttons, dialogs, dropdowns, tables, and complex form layouts.
Configure Biome linting/formatting and Husky pre-commit hooks via Ultracite.
Use Lucide React icons correctly. Reference file contains all 1,671 valid icon names — always verify against it before using an icon.
Set up Tailwind v4 with shadcn/ui using @theme inline pattern and CSS variable architecture. Four-step pattern: CSS variables, Tailwind mapping, base styles, automatic dark mode. Prevents 8 documented errors. Use when initializing React projects with Tailwind v4, or fixing colors not working, tw-animate-css errors, @theme inline dark mode conflicts, @apply breaking, v3 migration issues.