Comprehensive Next.js development guidelines covering file structure, RSC patterns, data fetching, optimization, and error handling.

• Covers 15+ topic areas including file conventions, route segments, RSC boundaries, async patterns, metadata generation, and image/font optimization
• Provides runtime selection guidance, directive usage, and error handling strategies with specific file conventions like error.tsx and not-found.tsx
• Includes data fetching patterns, route handler best practices, bundling considerations, and hydration error debugging
• Addresses advanced patterns such as parallel routes, intercepting routes, Suspense boundaries, and self-hosting with Docker