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app.py

@@ -197,9 +197,9 @@ def chat(message: str, history: list) -> str:
     system_prompt = build_system_prompt(results)
 
     messages = [{"role": "system", "content": system_prompt}]
-    for user_msg, assistant_msg in history:
-        messages.append({"role": "user", "content": user_msg})
-        messages.append({"role": "assistant", "content": assistant_msg})
+    # Gradio 5: history is list of {"role": ..., "content": ...} dicts
+    for entry in history:
+        messages.append({"role": entry["role"], "content": entry["content"]})
     messages.append({"role": "user", "content": message})
 
     text = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)