Connect the dynamic services.

Required before accounts and assessments work

1. Create a Supabase project and run supabase/migrations/0001_initial.sql.
2. Add the Supabase URL, publishable key, and service role key to Netlify environment variables.
3. Add an OpenAI API key for generated assessments.
4. Add Paddle client token, price IDs, and webhook secret to activate billing.
5. Redeploy the same Netlify project.