I ship client sites fast on a simple free-tier stack: Next.js for the app, Supabase for database/auth/storage (a real Postgres database with a generous free tier — 500MB DB, 1GB storage, 50K monthly active users — instead of hand-rolling my own server and auth system), and Vercel for git-push deploys with automatic preview URLs I send straight to clients for review; the one thing most "free-tier stack" posts skip is that Vercel's Hobby plan is licensed for non-commercial use only, so I build and...