Refactor golden image handling in backup upload process</message>

<message>Update the _set_golden_from_path function to improve the handling of existing golden image files. Replace the existing unlink logic with a more robust method that safely removes files or broken symlinks using the missing_ok parameter. This change enhances the reliability of the backup upload process by ensuring that stale references are properly cleared before setting a new golden image path.

backup-from-device/gnss-guard/tm-gnss-guard/starlink-grpc-tools/systemd/starlink-influx2.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Starlink GRPC to InfluxDB 2.x exporter
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/starlink-grpc-tools/
+Environment=INFLUXDB_URL=http://localhost:8086 INFLUXDB_TOKEN=<changeme> INFLUXDB_Bucket=<changeme> INFLUXDB_ORG=<changeme>
+ExecStart=/opt/starlink-grpc-tools/venv/bin/python3 dish_grpc_influx2.py -t 10 status alert_detail
+
+[Install]
+WantedBy=multi-user.target

backup-from-device/gnss-guard/tm-gnss-guard/starlink-grpc-tools/systemd/starlink-mqtt.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Starlink GRPC to MQTT exporter
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/starlink-grpc-tools/
+Environment=MQTT_HOST=localhost MQTT_PORT=1883 MQTT_USERNAME=<changeme> MQTT_PASSWORD=<changeme> MQTT_SSL=false
+ExecStart=/opt/starlink-grpc-tools/venv/bin/python3 dish_grpc_mqtt.py -t 10 status alert_detail
+
+[Install]
+WantedBy=multi-user.target

backup-from-device/gnss-guard/tm-gnss-guard/starlink-grpc-tools/systemd/starlink-prometheus.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Starlink GRPC to Prometheus exporter
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/starlink-grpc-tools/
+ExecStart=/opt/starlink-grpc-tools/venv/bin/python3 dish_grpc_prometheus.py status alert_detail usage location power
+KillSignal=SIGINT
+
+[Install]
+WantedBy=multi-user.target