refresh-test-db.sh mirrored prod with `pg_dump --clean`, which only drops objects
that exist in prod. Objects created on pelagia_test by a previously-applied
UNRELEASED migration (e.g. crewing tables/types not yet released to prod) survived
as leftovers, then collided with the `migrate deploy` replay ("type already
exists", P3009) — blocking every later migration and 500-ing the staging app.
Drop+recreate `public` before the restore so the test DB starts from exactly
prod's objects and unreleased migrations apply cleanly. Adds a guard that refuses
to run unless the derived target is the expected test DB.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
