Also updates test_migrate_from_empty_applies_0001 → test_migrate_from_empty_applies_all to assert both migrations apply on a fresh DB (mechanical consequence of adding 0002). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Forward-only, fail-stop, advisory-lock-guarded psycopg runner; migration 0001 lays the account/auth_code/storefront/membership schema. Tests prove migrate-from-empty and idempotent re-migrate (INV-1 partial) and the INV-4 many-capable shape. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ben.stull