redis_state_listener fix

apps/api/main.py

@@ -127,14 +127,9 @@ async def redis_state_listener():
         
         logger.info("Redis state listener connected")
         
-        while True:
-            try:
-                message = await asyncio.wait_for(
-                    pubsub.get_message(ignore_subscribe_messages=True),
-                    timeout=1.0
-                )
-                
-                if message and message["type"] == "message":
+        # listen() blocks async and waits for messages - prevents busy loop
+        async for message in pubsub.listen():
+            if message["type"] == "message":
                 data = message["data"]
                 try:
                     state_data = json.loads(data)
@@ -146,9 +141,6 @@ async def redis_state_listener():
                 except Exception as e:
                     logger.warning(f"Failed to parse state data: {e}")
                 
-            except asyncio.TimeoutError:
-                pass  # No message, continue
-                
     except asyncio.CancelledError:
         logger.info("Redis state listener cancelled")
         raise