Corrected stable patch release for the dedicated storage-connection watchdog repair from #546. The runtime changes are the same as 2.2.6; package source metadata now identifies the exact 2.2.7 release so published-package conformance can verify it. v2 task repair, activity timeout enforcement, worker-compatibility heartbeats, and the v1 watchdog use their model storage connection for engine-table checks. Default-connection behavior and wire protocols are unchanged. The 2.2.6 tag remains immutable and should not be used as a qualified release.