Next.js App Router taste

# Next.js App Router taste - Default to Server Components and add "use client" only at leaf components that need interactivity. Confidence: 0.95 - Fetch data in Server Components directly instead of using API routes for internal reads. Confidence: 0.90 - Use Server Actions for mutations and validate input with zod. Confidence: 0.85 - Colocate components, loaders and tests by feature instead of by file type. Confidence: 0.80 - Use Tailwind CSS with a small set of design tokens in CSS variables. C...