orin-status: clean poweroff when the UPS pack stays low while discharging

--poweroff-below V --poweroff-after N (deployed: 11.0 V, 30 readings at 1/s).
Charging or a missing reading restarts the count. Publishes 'stopping' first;
poweroff through svc-gw's polkit grant, no sudo.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz

deploy/yukart-orin-status.service

@@ -11,7 +11,9 @@ User=mikkeli
 SupplementaryGroups=i2c
 # The ELM's address, for elm_connected; without the file nothing is reported.
 EnvironmentFile=-/etc/default/yukart-elm
-ExecStart=/usr/local/bin/yukart-orin-status --elm ${ELM_ADDR}
+# Below 11.0 V while discharging for 30 s (about 10 % left at the Orin's load): power off
+# cleanly, through the polkit grant svc-gw installs (50-yukart-gw-power.pkla), not sudo.
+ExecStart=/usr/local/bin/yukart-orin-status --elm ${ELM_ADDR} --poweroff-below 11.0 --poweroff-after 30
 Restart=always
 RestartSec=2