fix networking UI again + tweaks to pipeline script

3d-generation-pipeline/generate_model_local.py

@@ -87,6 +87,9 @@ def image_to_3d_api(image_path, output_path):
     base64_encoded = base64.b64encode(image_data).decode('utf-8')
     model_binary = generate_no_preview(base64_encoded)
 
-    with open(output_path, 'wb') as f:
+    output_file = f"{output_path}.glb"
+    with open(output_file, 'wb') as f:
         f.write(model_binary)
+
+    return output_file