Session 2026-05-05: Smart City Digital Twin - Complete work

✅ Grafana traceability (source/mqttTopic) integration
✅ Prometheus-brokers connected (2/4 sources UP)
✅ Docker architecture cartography created
✅ Skills updated: smart-city-traceability-setup, postman-fiware, openremote-map-configuration
✅ FROST-Server fixed (network Docker)
✅ OpenRemote fixed (DNS resolution)

All 4 tasks completed:
- mds-study (completed)
- fix-frost (completed)
- fix-openremote (completed)
- grafana-traceability (completed)

grafana_dashboard_smartcity.json

@@ -35,7 +35,7 @@
     {
       "title": "Capteurs par Type (InfluxDB)",
       "type": "stat",
-      "datasource": "InfluxDB-Simulator",
+      "datasource": "InfluxDB-Local",
       "targets": [
         {
           "query": "SHOW TAG VALUES FROM \"sensor_data\" WITH KEY = \"type\"",