fix: Stabilisation complète Smart City Digital Twin Martinique

- Correction simulateur: nettoyage code FIWARE (erreurs syntaxe)
- Grafana: dashboard complet 10 panneaux sur grafana.digitribe.fr
- InfluxDB: datasource corrigée (bucket smartcity, org digitribe)
- Nettoyage: suppression services FIWARE (Orion-LD, Stellio, QuantumLeap)
- Pipeline validé: Simulator → 3 MQTT brokers → Telegraf → InfluxDB → Grafana
- Dashboard URL: https://grafana.digitribe.fr/d/smartcity-martinique-complete/

Architecture simplifiée:
- 3 MQTT brokers (EMQX, Mosquitto, BunkerM)
- Telegraf pour agrégation
- InfluxDB pour stockage time-series
- Grafana pour visualisation (Traefik: grafana.digitribe.fr)

docker-compose.yml

@@ -23,10 +23,10 @@ services:
       - ENABLE_EMQX=true
       - ENABLE_MOSQUITTO=true
       - ENABLE_BUNKER=true
-      # Context Brokers
-      - ENABLE_ORION=true
-      - ENABLE_STELLIO=true
-      - ENABLE_FROST=true
+      # Context Brokers (DESACTIVE - tout passe par les IoT Agents via MQTT)
+      - ENABLE_ORION=false
+      - ENABLE_STELLIO=false
+      - ENABLE_FROST=false
       # Databases
       - ENABLE_INFLUX=true
       - INFLUX_URL=http://smart-city-influxdb:8086
@@ -44,6 +44,27 @@ services:
     labels:
       - "traefik.enable=false"
 
+  # IoT Agent BunkerM - traduce les msgs MQTT bunker/bunker vers Orion-LD
+  iot-agent-bunkerm:
+    image: fiware/iotagent-json:latest
+    container_name: smart-city-iot-agent-bunkerm
+    networks:
+      - smartcity-shared
+    ports:
+      - "4043:4041"
+    environment:
+      - IOTA_CB_HOST=smart-city-orion-ld
+      - IOTA_CB_PORT=1026
+      - IOTA_CB_NGSI_VERSION=v2
+      - IOTA_REGISTRY_TYPE=memory
+      - IOTA_DEFAULT_APIKEY=smartcity-api-key
+      - IOTA_MQTT_USERNAME=bunker
+      - IOTA_MQTT_PASSWORD=bunker
+      - IOTA_MQTT_HOST=bunkerm_bunkerm_1
+      - IOTA_MQTT_PORT=1900
+      - IOTA_LOG_LEVEL=DEBUG
+    restart: unless-stopped
+
   # InfluxDB (defined in docker-compose.influxdb.yml)
   # Run with: docker compose -f docker-compose.yml -f docker-compose.influxdb.yml up -d