Changelog of @hackage/pgmq-config 0.3.0.0

Version bump only — coordinated release with pgmq-effectful 0.3.0.0. No source-level changes since 0.2.0.0.
Bumped pgmq-core, pgmq-hasql, and pgmq-effectful dependency bounds to >=0.3 && <0.4.

Version unified with the rest of the pgmq-hs packages; no pgmq-config 0.1.4.0 was published to Hackage.

ensureQueues and ensureQueuesEff are now truly idempotent. Previously they issued pgmq.create, pgmq.enable_notify_insert, pgmq.create_fifo_index, and pgmq.bind_topic unconditionally on every call, which worked by accident for standard/unlogged queues but caused trigger recreation on every boot and failed outright for partitioned queues (because pg_partman.create_parent raises on re-registration). Both entry points now route through the existing state-checking reconciliation path.