Update app.py

app.py

@@ -519,7 +519,7 @@ def generate_workflow(
     _timing_store = {}
     
     _append_log("INFO", "blue", f"Task submitted. Target: {unet_choice}")
-    yield None, _terminal_html 
+    yield None, _terminal_html, gr.update(interactive=False)
 
     try:
         effective_seed = int(seed) if seed >= 0 else random.randint(0, 2**32 - 1)
@@ -1442,7 +1442,8 @@ with gr.Blocks(title=MODEL_CONFIG["ui_title"], css=custom_css) as demo:
             char_enable, char_lora_state, char_strength,
             *base_lora_components,
         ],
-        outputs=[output, terminal_box],
+        # 👇 加上 button，接收第三个返回值
+        outputs=[output, terminal_box, button], 
     )