orin-status: the Orin's health on the bus

Temperatures, CPU/GPU load, memory, module power, fan, WiFi/LTE/tablet links
and the UPS battery (INA219, read-only) as envelopes on yukart/host/<signal>,
once a second. Built natively on the development Orin.

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

deploy/yukart-orin-status.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=Yukart orin-status: the Orin's own health on the bus
+Documentation=gitea:yukart/svc-core
+# Tier 2. Ordered after the broker and nothing else; it reconnects by itself if the broker restarts.
+After=mosquitto.service
+StartLimitIntervalSec=0
+
+[Service]
+User=mikkeli
+# The UPS INA219 is on /dev/i2c-7, group i2c.
+SupplementaryGroups=i2c
+ExecStart=/usr/local/bin/yukart-orin-status
+Restart=always
+RestartSec=2
+
+[Install]
+WantedBy=multi-user.target