fix(bridge): resolve websocket zombie connection and bounding memory leaks

hub.py

@@ -546,6 +546,11 @@ class WSHub:
             payload = data.get("data", {})
             request_id = payload.get("request_id", "")
             if request_id:
+                # Prevent slow memory leak for stranded requests
+                if len(self.pending_owners) > 10000:
+                    oldest = next(iter(self.pending_owners))
+                    self.pending_owners.pop(oldest, None)
+                
                 # Track ownership for response routing
                 self.pending_owners[request_id] = conn.conn_id
                 # Add source metadata