Update app.py

app.py

@@ -130,7 +130,7 @@ def chat_response(user_msg, chat_history, system_prompt,
     Generates streaming chat responses, optionally with background web search.
     """
     cancel_event.clear()
-    history = list(chat_history or [])
+    history = list(chat_history) if chat_history else []
     history.append({'role': 'user', 'content': user_msg})
 
     # Launch web search if enabled
@@ -165,6 +165,11 @@ def chat_response(user_msg, chat_history, system_prompt,
 
         pipe = load_pipeline(model_name)
         prompt = format_conversation(history, enriched, pipe["tokenizer"])
+
+
+        # TODO:
+        debug += "\nPROMPT:\n" + text
+
         prompt_debug = f"\n\n--- Prompt Preview ---\n```\n{prompt}\n```"
         streamer = TextIterStreamer(pipe["tokenizer"],
                                         skip_prompt=True,
@@ -197,6 +202,9 @@ def chat_response(user_msg, chat_history, system_prompt,
                 break
             text = chunk
 
+            # TODO:
+            debug += "\nRESPONSE:\n" + text
+
             # Detect start of thinking
             if not in_thought and '<think>' in text:
                 in_thought = True