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WhenTerminated watchdog calls IHostApplicationLifetime.StopApplication() when the ActorSystem dies outside StopAsync (SBR self-down + run-coordinated-shutdown-when-down), so the service supervisor restarts the node as a fresh incarnation. Optional ctor param keeps every existing construction site compiling. Plan's deploy/wonder-app-vd03/install.ps1 service-recovery-actions edit is skipped: that production deploy artifact is not tracked in this repo (Task 16 skipped its appsettings.Central.json for the same reason).