fixed output image degradation

app.py

@@ -378,10 +378,11 @@ with gr.Blocks(css=css) as demo:
                 input_images = gr.Gallery(label="Input Images", 
                                           show_label=False, 
                                           type="pil", 
+                                          format='png',
                                           interactive=True)
 
             with gr.Column():
-                result = gr.Gallery(label="Result", show_label=False, type="pil")
+                result = gr.Gallery(label="Result", show_label=False, type="pil", format='png')
                 # Add this button right after the result gallery - initially hidden
                 use_output_btn = gr.Button("↗️ Use as input", variant="secondary", size="sm", visible=False)