Frontend Dev Guidelines

@zerogravityskin-ron/frontend-dev-guidelines

Frontend development guidelines for Quantum Skincare's Next.js 16 App Router application with React 19.2, Tailwind CSS v4, Clerk authentication, and TypeScript. Covers Server/Client Components, React 19.2 features (useEffectEvent, Activity component, cache signals), data fetching patterns, Tailwind styling, route groups, form validation, and performance optimization. Use when creating pages, components, API routes, styling, or working with frontend code.