log-error identity-flood check: uuid=text operator mismatch

Pre-existing bug surfaced by the practicaCodigo crash: /api/log-error identity-flood check compared one param against sessionId(text) AND actorUserId(uuid) in one expr — PG resolved to text, uuid-side comparison had no operator, threw 'operator does not exist: uuid = text' on every client-error POST with a session. Fix a7081d4: cast per-column. Pushed v2.24.83, awaiting audit PASS.