fix: resolve starlette/jinja2 version conflict and localhost launch error on Hugging Face Spaces

chore: Upgrade Gradio version to 5.49.1 and pin python_version to fix build and runtime errors on Hugging Face Spaces

Fix Gradio and huggingface_hub version mismatch

Fix python version float parsing in README.md

Pin python_version to 3.10 to fix audioop error

Add README.md with Hugging Face Space configuration