Remove /cluster path from websocket URI

- Client connects to wss://host:port instead of wss://host:port/cluster
- Fixes connection loop issue

vidai/cluster_client.py

@@ -59,7 +59,7 @@ class ClusterClient:
             ssl_context.check_hostname = False
             ssl_context.verify_mode = ssl.CERT_NONE
 
-            uri = f"wss://{self.host}:{self.port}/cluster"
+            uri = f"wss://{self.host}:{self.port}"
             self.websocket = await websockets.connect(uri, ssl=ssl_context)
 
             # Detect available backends