Use native PG17+ logical slot failover; retire spock worker on PG18.#409

Open

ibrarahmad wants to merge 4 commits intomainfrom

Commits on Apr 8, 2026

Use native PG17+ logical slot failover; retire spock worker on PG18.
Ibrar Ahmed
committed
Use parenthesised (FAILOVER) syntax in CREATE_REPLICATION_SLOT and added test case.
Ibrar Ahmed
committed
Address review feedback and fix PQserverVersion on replication connections

Ibrar Ahmed
and
claude
committed
Fix InvalidTransactionId handling in failover slot XID comparisons.
Ibrar Ahmed
committed