F3: BullMQ 5.x rejects custom job IDs containing `:` (collides with internal
Redis-key namespacing). GDPR export crashed with "Custom Id cannot contain :".
Switched to dash separator. GDPR Article 15 right-to-access now functional.
F4: Redis was configured with `allkeys-lru` eviction in both docker-compose.yml
and docker-compose.prod.yml. BullMQ explicitly requires `noeviction` —
otherwise queue keys can be evicted under memory pressure and jobs vanish
silently. Switched to noeviction with comment pointing at the audit finding.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>