Add HF_HOME=/data for persistent model cache

Dockerfile

@@ -45,8 +45,12 @@ RUN pip uninstall -y torchao || true
 # Gradio + utilities
 RUN pip install gradio numpy Pillow huggingface_hub
 
+# HF cache to persistent storage (mount bucket at /data in Space settings)
+ENV HF_HOME=/data/hf_cache
+
 # Create user for HF Spaces
 RUN useradd -m -u 1000 user
+RUN mkdir -p /data/hf_cache && chown -R user:user /data
 USER user
 WORKDIR /home/user/app