Update app.py

app.py

@@ -26,7 +26,7 @@ def ask_evo(question, option1, option2, history, user_vote):
         "confidence": result["confidence"],
         "reasoning": result["reasoning"],
         "context": result["context_used"],
-        "user_preference": user_vote or ""
+        "vote": user_vote or ""  # ✅ Must be named 'vote' for retraining
     }
 
     # Log feedback