Naprawiony format wymiany z chatem

app.py

@@ -138,7 +138,8 @@ with gr.Blocks(title="A11y Expert") as demo:
             msg = gr.Textbox(
                 placeholder="Zadaj pytanie o WCAG, ARIA, lub poproś o analizę kodu...",
                 show_label=False,
-                container=False
+                container=False,
+                max_length=300
             )
             
             with gr.Row():
@@ -195,15 +196,21 @@ Stwórz plik `notes.md` w katalogu projektu aby zobaczyć tutaj swoje notatki.
     # Chat logic
     def user_message(user_input, history):
         """Add user message to chat history."""
-        return "", history + [[user_input, None]]
+        return "", history + [{"role": "user", "content": user_input}]
     
     def bot_response(history):
         """Generate bot response."""
-        user_input = history[-1][0]
-        history[-1][1] = ""
+        user_input = history[-1]["content"]
+        
+        # Extract text from multimodal format if needed
+        if isinstance(user_input, list):
+            user_input = " ".join([item.get("text", "") for item in user_input if item.get("type") == "text"])
+        
+        # Add assistant message placeholder
+        history.append({"role": "assistant", "content": ""})
         
         for response in respond(user_input, history[:-1]):
-            history[-1][1] = response
+            history[-1]["content"] = response
             yield history
     
     # Wire up the chat