fix: add audioop-lts marker (defensive for Py3.13 base)

fix: pin starlette<0.40 fastapi<0.116 (gradio 4.44.0 compat)

fix: pin huggingface_hub==0.25.2 (contemporary with gradio 4.44.0)

fix: pin huggingface_hub<0.36 (HfFolder import in gradio 4.44.0)

fix: gate audioop-lts to Py3.13+ (HF base is Py3.10)

fix: add audioop-lts shim for Py3.13 pyaudioop removal

fix: pin gradio>=5.0.0 to avoid Py3.13 pyaudioop break

Initial: Gradio app + SEO-optimized README