feat: distribution service + redpanda consumer + updated flow diagram

- Add Pulsar distribution service (consumes smartcity-* → MQTT + context brokers)
- Add Redpanda → InfluxDB consumer (redpanda/consumer.py)
- Update FIXED_LOCATIONS with exact OpenRemote asset coordinates
- Fix Pulsar topics (underscore: smartcity-traffic not smartcity-traffic)
- Fix prometheus.yml endpoints (Redpanda:9644, comment inactive stacks)
- Add docker-compose.redpanda-consumer.yml

pulsar/config/nginx.conf

@@ -0,0 +1,19 @@
+server {
+    listen 8080;
+    server_name _;
+
+    # Frontend static build
+    location / {
+        root /usr/share/nginx/html;
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Proxy vers backend Pulsar Manager
+    location /pulsar-manager/ {
+        proxy_pass http://localhost:7750/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}