fix: add file_output and toogle bttn

app.py

@@ -143,7 +143,7 @@ def run_and_submit_all( profile: gr.OAuthProfile | None):
         status_message = f"An unexpected error occurred during submission: {e}"
         print(status_message)
         results_df = pd.DataFrame(results_log)
-        return status_message, results_df
+        return status_message, results_df, gr.update(interactive=True)
 
 
 def download_log():
@@ -157,6 +157,8 @@ with gr.Blocks() as demo:
     gr.LoginButton()
 
     run_button = gr.Button("Run Evaluation & Submit All Answers")
+    
+    download_button = gr.Button("Download Evaluation Log", interactive=False))
 
     status_output = gr.Textbox(label="Run Status / Submission Result", lines=5, interactive=False)
     
@@ -164,9 +166,11 @@ with gr.Blocks() as demo:
 
     run_button.click(
         fn=run_and_submit_all,
-        outputs=[status_output, results_table]
+        outputs=[status_output, results_table, download_button]
     )
-
+    
+    file_output = gr.File(label="Download Log File")
+    
     download_button.click(
         fn=download_log,
         outputs=file_output