Update app.py

app.py

@@ -104,10 +104,10 @@ def main():
         
     for model_path in cmd_model_paths:
         user_key = get_model_short_name(model_path)
-        if model_path not in DEFAULT_MODEL_PATHS:  # 避免重复
+        if model_path not in DEFAULT_MODEL_PATHS: 
             model_paths_dict[user_key] = model_path
 
-
+    default_ui_model = get_model_short_name(DEFAULT_MODEL_PATHS[0])
     
 
     with gr.Blocks(title="Libra: Radiology Analysis with Direct URL Examples") as demo:
@@ -126,7 +126,7 @@ def main():
         model_dropdown = gr.Dropdown(
             label="Select Model",
             choices=list(model_paths_dict.keys()),
-            value=user_key,
+            value=default_ui_model,
             interactive=True
         )