Update app.py

app.py

@@ -1,5 +1,5 @@
 """
-VISUAL CONVERSATIONAL INTELLIGENCE ENGINE app_advanced.py
+VISUAL CONVERSATIONAL INTELLIGENCE ENGINE
 ==========================================
 A pluggable, image-grounded multi-turn conversational system.
 
@@ -255,16 +255,13 @@ def reset_conversation(
 # GRADIO UI INTERFACE
 # ============================================================================
 
-def format_history_for_chatbot(history: List[Tuple[str, str]]) -> List[dict]:
+def format_history_for_chatbot(history: List[Tuple[str, str]]) -> List[Tuple[str, str]]:
     """
     Convert internal (question, answer) tuples into
-    Gradio v4 Chatbot message format.
+    Gradio Chatbot display format.
+    Returns the history as-is since Gradio expects [(user_msg, bot_msg), ...]
     """
-    messages = []
-    for q, a in history:
-        messages.append({"role": "user", "content": q})
-        messages.append({"role": "assistant", "content": a})
-    return messages
+    return history
 
 
 def generate_visual_topic_suggestions(