add output buffer state to interface for improved state management

app.py

@@ -479,6 +479,7 @@ def create_interface():
                     mesh_simplify = gr.Slider(0.9, 0.98, label="Simplify", value=0.95, step=0.01)
                     texture_size = gr.Slider(512, 2048, label="Texture Size", value=1024, step=512)
             
+            output_buf = gr.State()
 
             # Examples section - simplified version that only updates the prompt fields
             gr.Examples(