Task: staff-prod-ready-0930 Run: 4ea6adb5-b850-4f90-ad7b-74f92749b406
- Add PostgreSQL migrations with strict RLS policies (0011) - Introduce SyncService for handling auth, token-based registration - Add payload size and replay attack mitigations - Provide HTTP fastify routes (pull, push, ack, device management) - Validate openapi contracts and add comprehensive tests