fix: telegraf containers names + openremote pg image + session snapshot 2026-05-25

- telegraf.conf: fix Mosquitto/BunkerM container names (hyphens not underscores)
- tegraf.conf: comment out BunkerM consumer (auth fails, simulator not sending)
- openremote/docker-compose.yml: switch PG image to timescaledb-ha:pg15 (fixes timescaledb_toolkit crash)
- Add session_resume + architecture snapshot 2026-05-25
- Update TODO.md with current status

MONITORING_REPORT_2026-05-22.md

@@ -0,0 +1,31 @@
+# Smart City Monitoring Report - 2026-05-22
+
+**Timestamp:** 2026-05-22 00:50:30
+
+## Summary
+⚠️ **9 issue(s) detected** - Critical systems are partially unavailable
+
+## Container Status
+| Container | Status |
+|-----------|--------|
+| openremote_manager_1 | 🛑 DOWN |
+| openremote_keycloak_1 | 🛑 DOWN |
+| stellio-api-gateway | 🛑 DOWN |
+| smart-city-prometheus-brokers | 🛑 DOWN |
+
+## Endpoint Status
+| Service | URL | Status |
+|---------|-----|--------|
+| OpenRemote | https://openremote.digitribe.fr | 🌐 DOWN (HTTP 502) |
+| Orion-LD | http://fiware-gis-quickstart-orion-1:1026/version | 🌐 DOWN (HTTP 000) |
+| Stellio | https://stellio.digitribe.fr | 🌐 DOWN (HTTP 502) |
+| FROST | http://frost_http-web-1:8080/FROST-Server/core/v1.0/info | 🌐 DOWN (HTTP 000) |
+
+## Network
+- 🔌 Network issue: Traefik → OpenRemote
+
+## Recommendations
+1. Restart critical containers: `docker-compose up -d`
+2. Check Traefik logs for routing issues
+3. Verify network connectivity between services
+4. Review container health checks