Grafana: Final dashboard with source + mqttTopic variables

- Add mqttTopic variable for topic filtering
- Add Traceability Demo panel
- Dashboard ready for traceability visualization

references/grafana-dashboard-sc-dt-final.json

@@ -0,0 +1,220 @@
+{
+  "meta": {
+    "type": "db",
+    "canSave": true,
+    "canEdit": true,
+    "canAdmin": true,
+    "canStar": true,
+    "canDelete": true,
+    "slug": "smart-city-digital-twin-martinique",
+    "url": "/d/smartcity-martinique-2026/smart-city-digital-twin-martinique",
+    "expires": "0001-01-01T00:00:00Z",
+    "created": "2026-05-04T21:28:58Z",
+    "updated": "2026-05-05T02:14:44Z",
+    "updatedBy": "admin",
+    "createdBy": "admin",
+    "version": 3,
+    "hasAcl": false,
+    "isFolder": false,
+    "folderId": 0,
+    "folderUid": "",
+    "folderTitle": "General",
+    "folderUrl": "",
+    "provisioned": false,
+    "provisionedExternalId": "",
+    "annotationsPermissions": {
+      "dashboard": {
+        "canAdd": true,
+        "canEdit": true,
+        "canDelete": true
+      },
+      "organization": {
+        "canAdd": true,
+        "canEdit": true,
+        "canDelete": true
+      }
+    }
+  },
+  "dashboard": {
+    "annotations": {
+      "list": []
+    },
+    "editable": true,
+    "fiscalYearStartMonth": 0,
+    "graphTooltip": 0,
+    "id": 9,
+    "links": [],
+    "panels": [
+      {
+        "datasource": "FIWARE Orion",
+        "gridPos": {
+          "h": 8,
+          "w": 12,
+          "x": 0,
+          "y": 0
+        },
+        "targets": [
+          {
+            "query": "/ngsi-ld/v1/entities?type=TrafficFlowObserved&limit=1000",
+            "refId": "A"
+          }
+        ],
+        "title": "Traffic Flow (Orion-LD)",
+        "type": "timeseries"
+      },
+      {
+        "datasource": "FROST-Server SensorThings",
+        "gridPos": {
+          "h": 8,
+          "w": 12,
+          "x": 12,
+          "y": 0
+        },
+        "targets": [
+          {
+            "query": "/Datastreams?$expand=Observations",
+            "refId": "B"
+          }
+        ],
+        "title": "Air Quality (FROST-Server)",
+        "type": "timeseries"
+      },
+      {
+        "datasource": "InfluxDB-Local",
+        "gridPos": {
+          "h": 8,
+          "w": 8,
+          "x": 0,
+          "y": 8
+        },
+        "targets": [
+          {
+            "query": "SHOW TAG VALUES FROM \"sensor_data\" WITH KEY = \"type\"",
+            "refId": "C"
+          }
+        ],
+        "title": "Capteurs par Type (InfluxDB)",
+        "type": "stat"
+      },
+      {
+        "datasource": "FROST-Server SensorThings",
+        "gridPos": {
+          "h": 8,
+          "w": 16,
+          "x": 8,
+          "y": 8
+        },
+        "targets": [
+          {
+            "query": "/Observations?$orderby=phenomenonTime desc&$top=10",
+            "refId": "D"
+          }
+        ],
+        "title": "Derni\u00e8res Observations (FROST)",
+        "type": "table"
+      },
+      {
+        "id": 1,
+        "title": "Traceability Demo (source/mqttTopic)",
+        "type": "table",
+        "targets": [
+          {
+            "datasource": {
+              "type": "grafana-simple-json-datasource",
+              "uid": ""
+            },
+            "query": "AirQualityObserved",
+            "refId": "A"
+          }
+        ],
+        "columns": [
+          {
+            "text": "ID",
+            "value": "id"
+          },
+          {
+            "text": "Source",
+            "value": "source"
+          },
+          {
+            "text": "MQTT Topic",
+            "value": "mqttTopic"
+          },
+          {
+            "text": "Date",
+            "value": "date"
+          }
+        ],
+        "transformations": []
+      }
+    ],
+    "schemaVersion": 36,
+    "style": "dark",
+    "tags": [
+      "smartcity",
+      "martinique",
+      "simulator"
+    ],
+    "templating": {
+      "list": [
+        {
+          "name": "source",
+          "type": "custom",
+          "label": "Source (Broker)",
+          "options": [
+            {
+              "text": "simulator",
+              "value": "simulator",
+              "selected": true
+            },
+            {
+              "text": "emqx",
+              "value": "emqx"
+            },
+            {
+              "text": "mosquitto",
+              "value": "mosquitto"
+            },
+            {
+              "text": "bunkerm",
+              "value": "bunkerm"
+            }
+          ],
+          "query": "simulator,emqx,mosquitto,bunkerm",
+          "allFormat": "regex"
+        },
+        {
+          "name": "mqttTopic",
+          "type": "custom",
+          "label": "MQTT Topic",
+          "options": [
+            {
+              "text": "city/sensors/AirQualityObserved/*",
+              "value": "city/sensors/AirQualityObserved/",
+              "selected": false
+            },
+            {
+              "text": "city/sensors/TrafficFlowObserved/*",
+              "value": "city/sensors/TrafficFlowObserved/",
+              "selected": false
+            },
+            {
+              "text": "city/sensors/WeatherObserved/*",
+              "value": "city/sensors/WeatherObserved/",
+              "selected": false
+            }
+          ],
+          "query": "city/sensors/AirQualityObserved/,city/sensors/TrafficFlowObserved/,city/sensors/WeatherObserved/",
+          "allFormat": "regex"
+        }
+      ]
+    },
+    "time": {
+      "from": "now-1h",
+      "to": "now"
+    },
+    "title": "Smart City Digital Twin - Martinique",
+    "uid": "smartcity-martinique-2026",
+    "version": 3
+  }
+}