Supabase Setup

Add your Supabase keys to enable the portal.

Create a Supabase project, run the SQL in supabase/migrations/001_minimal_project_backend.sql, then add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY to .env.local.

Full steps are in docs/SUPABASE_SETUP.md.