Michel Roegl-Brunner 6a84da5e85 feat: implement real-time update progress with proper theming (#72) ...

* fix(update): properly detach update script to survive service shutdown

- Use setsid and nohup to completely detach update process from parent Node.js
- Add 3-second grace period to allow parent process to respond to client
- Fix issue where update script would stop when killing Node.js process
- Improve systemd service detection using systemctl status with exit code check

* fix(update): prevent infinite loop in script relocation

- Check for --relocated flag at the start of main() before any other logic
- Set PVE_UPDATE_RELOCATED environment variable immediately when --relocated is detected
- Prevents relocated script from triggering relocation logic again

* fix(update): use systemd-run and double-fork for complete process isolation

- Primary: Use systemd-run --user --scope with KillMode=none for complete isolation
- Fallback: Implement double-fork daemonization technique
- Ensures update script survives systemd service shutdown
- Script is fully orphaned and reparented to init/systemd

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2025-10-08 10:43:52 +02:00

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