ensureDbCompatibility ran ALTER TABLE / CREATE TABLE IF NOT EXISTS on the
login, register, token and session paths, mirroring columns every
migration under prisma/migrations already creates. The entrypoint applies
those migrations before the server listens and stops the boot when one
fails, so the mirror never had work to do, and DDL on a request path
needs the table's owner: a connection that may only read and write rows
fails every login on it. Drop the module, its call sites and the mocks
that stubbed it out.
Sessions, refresh tokens, access tokens, trusted devices and the
second-factor and passkey challenges were never removed after they
expired, so the sign-in tables were mostly dead rows.
auth-ledger-cleanup deletes a session, token or trusted device 30 days
after it expired, which keeps every row the login throttle's 30-day
known-address check and refresh reuse detection can still read; a revoked
token without an expiry stays listed. Challenges go a day after expiry.
Security activity reads the audit log and loses nothing.