refactored 4

apps/abstraction/main.py

@@ -328,7 +328,8 @@ async def mqtt_worker(config: dict[str, Any], redis_client: aioredis.Redis) -> N
                             last_activity = asyncio.get_event_loop().time()
                             topic = str(message.topic)
                             payload_str = message.payload.decode()
-                            logger.debug(f"MQTT message received on {topic}: {payload_str}")
+                            retain = getattr(message, 'retain', None)
+                            logger.debug(f"MQTT message received on ({retain=}) {topic}: {payload_str}")
                             
                             # Check if this is an abstract SET message
                             if topic.startswith("home/") and topic.endswith("/set"):