Bump sdk_version to 5.17.1

Switch to Gradio 5 stack and modern hub

Fix startup/runtime: replace gr.JSON output, force share=True and server bind

Fix dependency conflict: pin huggingface_hub==0.24.7 for gradio compatibility

Fix: pin Space python_version to 3.10 to avoid audioop issue on 3.13

Add Gradio demo app for aesthetic scoring

initial commit