Serves the `postgres` capability socket from pasted connection details (host/port/user/password/database), and — like the bundled provider — auto-creates each consumer's database (and optional dedicated user) on the external server. No bundled server. Presets: AWS RDS / Aurora (<id>.<region>.rds.amazonaws.com:5432), Google Cloud SQL, Azure Database for PostgreSQL, Supabase, Neon, Crunchy Bridge.