Module source 

PostgreSQL CDC source connector implementation.

Implements SourceConnector for streaming logical replication changes from PostgreSQL into LaminarDB as Arrow RecordBatches.

Architecture

• Ring 0: No CDC code — just SPSC channel pop (~5ns)
• Ring 1: WAL consumption, pgoutput parsing, Arrow conversion
• Ring 2: Slot management, schema discovery, health checks

Structs

PostgresCdcSource

PostgreSQL CDC source connector.