update app

app.py

@@ -471,10 +471,7 @@ with gr.Blocks(theme=orange_red_theme, css=css) as demo:
             gr.Markdown("## Output", elem_id="output-title")
             output = gr.Textbox(label="Raw Output Stream", interactive=False, lines=12, show_copy_button=True)
             with gr.Accordion("(Result.md)", open=False):
-                markdown_output = gr.Markdown(label="(Result.Md)", latex_delimiters=[
-                                {"left": "$$", "right": "$$", "display": True},
-                                {"left": "$", "right": "$", "display": False}
-                            ])
+                markdown_output = gr.Markdown(label="(Result.Md)")
 
             model_choice = gr.Radio(
                 choices=[
@@ -485,7 +482,7 @@ with gr.Blocks(theme=orange_red_theme, css=css) as demo:
                     "Qwen2.5-VL-3B-Instruct"
                 ],
                 label="Select Model",
-                value="Qwen3-VL-4B-Instruct"
+                value="Qwen2.5-VL-7B-Instruct"
             )
 
     # --- Event Handlers ---