Update app.py

app.py

@@ -943,6 +943,7 @@ class ZeroEngine:
         return "⚡ Primed"
 
     def inference_generator(self, prompt: str, history: List[Dict], ghost_context: str, repo: str, quant: str, username: str) -> Generator:
+        username = profile.username if profile else "anonymous"
         # Update activity timestamp
         self.update_activity()