market-db holds the catalogue, and the app finds it through the parameter /market/db/endpoint. On the app server app, /opt/market/db-password holds the master password (user market, database market), and /opt/market/cleanup.sql is the intern's new nightly cleanup. It has never been run.

1. Before anything else: keep automated backups for 7 days, protect market-db from being deleted, and take a manual snapshot market-db-before-cleanup. Wait until the snapshot is available.
2. Note the current time in UTC, as T=$(date -u +%Y-%m-%dT%H:%M:%SZ). Then start a session on app, install the PostgreSQL client, and run the cleanup against the database. Count how many monsters it deleted.
3. Restore market-db as it was just before the cleanup into a new instance, market-db-restored, in the same subnet group and security group. The newest moment you can restore to is about five minutes ago, so wait until LatestRestorableTime is past the time you noted.
4. Check from app that the restored database has the whole catalogue.
5. Point the app at the restored database.