Add configurable Postgres replication socket timeout

[sravan27]

Summary

Adds an optional Postgres replication_socket_timeout setting that applies only to logical replication connections.

This is a narrow follow-up to #700. The issue discussion established that half-open source connections can leave replication stalled for 12-16 minutes before the OS/TCP path surfaces an error. @powersync/service-jpgwire already destroys sockets on timeout and the replication job already reconnects when WalStream.replicate() throws, but the Postgres replication connection had no per-stream override comparable to the existing snapshot timeout.

With this change, self-hosted operators can choose a shorter timeout for the replication socket so a half-open stream is destroyed earlier and the existing retry path can reconnect.

Details

• Adds replication_socket_timeout to the Postgres data source config.
• Normalizes the value from seconds to milliseconds.
• Applies the timeout only in PgManager.replicationConnection().
• Leaves the default behavior unchanged when the option is omitted.
• Keeps snapshot connection behavior unchanged.

Example:

replication:
  connections:
    - type: postgresql
      uri: postgresql://...
      replication_socket_timeout: 90

Tests

• pnpm --filter @powersync/service-module-postgres build
• pnpm --filter @powersync/service-module-postgres build:tests
• pnpm exec vitest run test/src/config.test.ts from modules/module-postgres

Scope

This does not attempt to solve every option discussed in #700. In particular, it does not add TCP_USER_TIMEOUT, TCP_KEEPINTVL, TCP_KEEPCNT, or a new replication-progress health model. It is a small operational knob that lets affected deployments reduce the current detection window using the socket-timeout behavior already present in service-jpgwire.

[changeset-bot]

🦋 Changeset detected

Latest commit: 7b6e7df

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 12 packages

Name	Type
@powersync/service-module-postgres	Patch
@powersync/service-schema	Patch
@powersync/service-image	Patch
@powersync/service-core	Patch
@powersync/service-module-convex	Patch
@powersync/service-module-core	Patch
@powersync/service-module-mongodb-storage	Patch
@powersync/service-module-mongodb	Patch
@powersync/service-module-mssql	Patch
@powersync/service-module-mysql	Patch
@powersync/service-module-postgres-storage	Patch
test-client	Patch

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