fix: Add @spaces.GPU with extended duration for ZeroGPU compatibility

app.py

@@ -7,6 +7,7 @@ FP8/INT8 formats for ComfyUI inference, with HuggingFace Hub integration.
 import os
 import tempfile
 import gradio as gr
+import spaces  # ZeroGPU
 from huggingface_hub import hf_hub_download, HfApi, create_commit, CommitOperationAdd
 
 from convert_to_quant import convert, ConversionConfig
@@ -146,6 +147,7 @@ def upload_model_as_pr(
     except Exception as e:
         return f"❌ Upload failed: {str(e)}"
 
+@spaces.GPU(duration=600)  # Extended duration for large models
 def quantize_model(
     source_repo: str,
     file_path: str,