use correct broker setting

apps/abstraction/main.py

@@ -38,8 +38,8 @@ def load_config(config_path: Path) -> dict[str, Any]:
         logger.warning(f"Config file not found: {config_path}, using defaults")
         return {
             "mqtt": {
-                "broker": "172.16.2.16",
-                "port": 1883,
+                "broker": os.getenv("MQTT_BROKER", "localhost"),
+                "port": int(os.getenv("MQTT_PORT", "1883")),
                 "client_id": "home-automation-abstraction",
                 "keepalive": 60
             },
@@ -227,8 +227,8 @@ async def mqtt_worker(config: dict[str, Any], redis_client: aioredis.Redis) -> N
         redis_client: Redis client for UI updates
     """
     mqtt_config = config.get("mqtt", {})
-    broker = mqtt_config.get("broker", "172.16.2.16")
-    port = mqtt_config.get("port", 1883)
+    broker = os.getenv("MQTT_BROKER") or mqtt_config.get("broker", "localhost")
+    port = int(os.getenv("MQTT_PORT", mqtt_config.get("port", 1883)))
     client_id = mqtt_config.get("client_id", "home-automation-abstraction")
     # Append a short suffix (ENV override possible) so multiple processes don't collide
     client_suffix = os.environ.get("MQTT_CLIENT_ID_SUFFIX") or uuid.uuid4().hex[:6]