Supabase + AI Full-Stack Starter

Stop spending your first three days on every project wiring up auth, payments, and AI APIs. This starter ships everything connected and working. **Included stack:** - **Next.js 16** App Router with TypeScript strict mode - **Supabase Auth** — email/password + Google OAuth, session management, middleware guard - **Supabase PostgreSQL** — profiles table, subscription tier tracking, RLS policies pre-configured - **Gemini 2.0 Flash** API integration — streaming chat endpoint at `/api/chat` with rate limiting by tier - **Stripe** — Pro subscription checkout, webhook handler, subscription status sync to Supabase - **Tailwind 4** + **shadcn/ui** — pre-built auth forms, pricing page, dashboard layout, and chat UI - **Resend** — transactional email templates for welcome, password reset, and subscription confirmation **Database migrations included:** `001_profiles.sql` — User profiles with tier column `002_subscriptions.sql` — Stripe subscription tracking `003_ai_usage.sql` — Per-user request tracking for rate limiting **Deployment:** Single `vercel.json` with environment variable documentation. Deploy to Vercel in under 10 minutes with the included setup checklist. **What this is not:** It's not an opinionated framework — it's a starting point. Everything is standard Next.js + Supabase patterns so you can modify it without fighting abstractions.