Module postgres 

PostgreSQL producer and consumer for the cell-based server.

Architecture:

• Producer persists MEvent rows into a durable table.
• Consumer replays table rows (catch-up), then follows new inserts via LISTEN/NOTIFY.

Structs

CatchUpStatus

Shared status for startup catch-up.

CellPostgresConsumer

PostgreSQL consumer that replays + tails events.

CellPostgresProducer

PostgreSQL producer — background thread with fail-fast error propagation.

PersistedEvent

Persisted event row fetched from Postgres.

PostgresConfig

PostgreSQL configuration.

PostgresHistoryReplayProvider

HistoryReplayProvider backed by PostgresHistoryStore.

PostgresHistoryStore

Read API for durable event history (windback/replay providers).

PostgresProducerHandle

Handle to the PostgreSQL producer.