feat: add unified API proxy layer, debug endpoint, and systemd service for node-guardian

scripts/node-guardian.service

@@ -0,0 +1,23 @@
+[Unit]
+Description=DAARION Node Guardian Loop
+After=network.target docker.service
+Requires=docker.service
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/microdao-daarion
+ExecStart=/usr/bin/python3 /opt/microdao-daarion/scripts/node-guardian-loop.py --node-id=node-1-hetzner-gex44
+Restart=always
+RestartSec=10
+Environment=CITY_API_URL=http://localhost:7001
+Environment=SWAPPER_URL=http://localhost:8890
+Environment=PYTHONUNBUFFERED=1
+
+# Logging
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=node-guardian
+
+[Install]
+WantedBy=multi-user.target
+