Add FlexMeasures plugins, USEF protocol, and Cariflex simulator

- flexmeasures-entsoe: ENTSO-E data plugin
- flexmeasures-weather: Weather data plugin
- USEF Flex Trading Protocol PDF (2.4MB)
- Cariflex simulator (publishes to Redis)
- Dashboard Grafana updated with correct InfluxDB queries
- All tools extracted in /tools/

docs/grafana_dashboard.md

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+# Cariflex - Dashboard Grafana
+
+## Datasource FlexMeasures
+
+FlexMeasures n'a pas de datasource Grafana natif. Options :
+1. **PostgreSQL direct** : Lire depuis la DB FlexMeasures (sensors, assets, schedules)
+2. **API REST FlexMeasures** : Utiliser un datasource JSON générique
+3. **InfluxDB** : Les données IoT sont déjà dans InfluxDB
+
+## Dashboard JSON
+
+Le dashboard Cariflex comprend :
+- **Panel 1** : Production PV temps réel (10 assets)
+- **Panel 2** : État de charge des batteries (10 assets)
+- **Panel 3** : Consommation des bornes VE (10 assets)
+- **Panel 4** : Flexibilité disponible (agrégée)
+- **Panel 5** : Carte des actifs (Geomap)
+- **Panel 6** : Schedules FlexMeasures
+- **Panel 7** : Revenus flexibilité (PPA + GO + Services système)
+
+## Panels
+
+### PV Production
+```json
+{
+  "title": "Production PV Cariflex",
+  "type": "timeseries",
+  "datasource": "InfluxDB-v2",
+  "targets": [{
+    "query": "from(bucket:\"smartcity\") |> range(start: -24h) |> filter(fn: (r) => r[\"_measurement\"] == \"mqtt_consumer\") |> filter(fn: (r) => r[\"topic\"] =~ /pv_/) |> aggregateWindow(every: 5m, fn: mean)"
+  }]
+}
+```
+
+### Battery SOC
+```json
+{
+  "title": "État de Charge Batteries",
+  "type": "gauge",
+  "datasource": "InfluxDB-v2",
+  "targets": [{
+    "query": "from(bucket:\"smartcity\") |> range(start: -1h) |> filter(fn: (r) => r[\"_measurement\"] == \"mqtt_consumer\") |> filter(fn: (r) => r[\"topic\"] =~ /bat_/) |> last()"
+  }]
+}
+```
+
+### EV Charger Consumption
+```json
+{
+  "title": "Consommation Bornes VE",
+  "type": "timeseries",
+  "datasource": "InfluxDB-v2",
+  "targets": [{
+    "query": "from(bucket:\"smartcity\") |> range(start: -24h) |> filter(fn: (r) => r[\"_measurement\"] == \"mqtt_consumer\") |> filter(fn: (r) => r[\"topic\"] =~ /chg_/) |> aggregateWindow(every: 5m, fn: mean)"
+  }]
+}
+
+### Flexibilité Disponible
+```json
+{
+  "title": "Flexibilité Disponible",
+  "type": "stat",
+  "datasource": "InfluxDB-v2",
+  "targets": [{
+    "query": "from(bucket:\"smartcity\") |> range(start: -1h) |> filter(fn: (r) => r[\"_measurement\"] == \"mqtt_consumer\") |> filter(fn: (r) => r[\"_field\"] == \"flexibility\") |> sum()"
+  }]
+}
+```
+
+## Déploiement
+
+```bash
+# Créer le dashboard via l'API Grafana
+curl -X POST http://localhost:3001/api/dashboards/db \
+  -u admin:admin \
+  -H "Content-Type: application/json" \
+  -d @cariflex-dashboard.json
+```