commucat-storage

Asynchronous PostgreSQL + Redis data access layer for CommuCat.

• Migrations (migrations/*.sql) provision users, devices, pairing tokens, relay queue, secret rotation, federation peers, outbox and audit logs.
• connect, migrate, readiness wire up the database backends and run lightweight health probes.
• CRUD helpers for users/devices, CSR-based rotations, pairing flows, groups and federation peers.
• Offline message delivery via relay_queue/InboxOffset, presence and routing state in Redis (presence:*, route:*).
• Federation support: enqueue/claim/delete/reschedule helpers for the federation_outbox, idempotency tracking and access to device rotation history.

Limitations: there is no connection pooling yet and the Redis connection is wrapped in a Mutex, so production setups should introduce pooling/backpressure before heavy use.