feat: Pulsar distribution service (Simulator → Pulsar → Brokers)

- Fix Pulsar: use binary client (port 6650) instead of non-existent REST /produce API
- Add pulsar-client to Dockerfile
- Create pulsar/distribution.py: consumes Pulsar and republishes to MQTT (EMQX/Mosquitto), NGSI-LD (Orion/Stellio), FROST
- Add docker-compose.distribution.yml for the distribution service
- Tested: Messages successfully distributed to EMQX and Orion-LD
- Update session resume

clickhouse/docker-compose.yml

@@ -0,0 +1,44 @@
+# ClickHouse — Columnar OLAP Database for Smart City Analytics
+# Usage: docker compose -p smart-city -f clickhouse/docker-compose.yml up -d
+# Ports: 8123=HTTP Interface, 9000=Native TCP
+services:
+  clickhouse:
+    image: clickhouse/clickhouse-server:latest
+    container_name: smart-city-clickhouse
+    networks:
+      - traefik-public
+      - smartcity-shared
+    ports:
+      - "8123:8123"   # HTTP interface (for queries, Grafana)
+      - "9000:9000"   # Native TCP (for clickhouse-client)
+    volumes:
+      - clickhouse-data:/var/lib/clickhouse
+      - ./config.xml:/etc/clickhouse-server/config.d/config.xml:ro
+    environment:
+      - CLICKHOUSE_USER=default
+      - CLICKHOUSE_PASSWORD=Digitribe972
+    deploy:
+      resources:
+        limits:
+          memory: 2G
+    healthcheck:
+      test: ["CMD", "wget", "-q", "--spider", "http://localhost:8123/ping"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.clickhouse.rule=Host(`clickhouse.digitribe.fr')"
+      - "traefik.http.routers.clickhouse.entrypoints=websecure"
+      - "traefik.http.routers.clickhouse.tls=true"
+      - "traefik.http.services.clickhouse.loadbalancer.server.port=8123"
+
+networks:
+  traefik-public:
+    external: true
+  smartcity-shared:
+    external: true
+
+volumes:
+  clickhouse-data: