Coordinate graceful shutdown with Home Assistant OS#6851
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On a reboot or power off triggered from the API, enter the haos-pre-shutdown.target systemd target before stopping Home Assistant Core, so the OS can stop the console CLI cleanly instead of letting it restart-loop while the CLI plugin is torn down. Entering the target is best-effort and a no-op on OS releases that don't have it. For host shutdowns not initiated by Supervisor, the SIGTERM handler now inspects the systemd manager state. When it is "stopping", Supervisor runs the managed Core.shutdown() to stop Core, apps and plugins gracefully before tearing itself down; on a plain Supervisor restart the state is "running", so only Supervisor stops as before. The manager state is exposed by every systemd version, so this works regardless of the OS release. Add the SystemState D-Bus enum and Systemd.get_system_state() for the state lookup. Refs home-assistant/operating-system#4642 Refs home-assistant/operating-system#4719 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Proposed change
On a reboot or power off triggered from the API, enter the haos-pre-shutdown.target systemd target before stopping Home Assistant Core, so the OS can stop the console CLI cleanly instead of letting it restart-loop while the CLI plugin is torn down. Entering the target is best-effort and a no-op on OS releases that don't have it.
For host shutdowns not initiated by Supervisor, the SIGTERM handler now inspects the systemd manager state. When it is "stopping", Supervisor runs the managed Core.shutdown() to stop Core, apps and plugins gracefully before tearing itself down; on a plain Supervisor restart the state is "running", so only Supervisor stops as before. The manager state is exposed by every systemd version, so this works regardless of the OS release.
Add the SystemState D-Bus enum and Systemd.get_system_state() for the state lookup.
Refs home-assistant/operating-system#4642
Refs home-assistant/operating-system#4719
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ruff format supervisor tests)If API endpoints or add-on configuration are added/changed: