Temporary schema derived from migration column references. Provides
workable local structure BEFORE the real Supabase pg_dump arrives.
When brother removes the Supabase spend cap:
1. pg_dump the real Supabase schema to supabase/captured_schema.sql
2. pg_dump the data to supabase/captured_data.sql
3. Drop everything in public schema
4. Apply the captured schema + data
5. Drop the synthesized file
The synthesized schema is NOT for production.
