requirements: datasets + pandas + hf_hub<0.30

revert sdk_version to 5.6.0 (4.44 jinja2 cache bug with multi-tab)

v5: minimal UI + gradio 4.44 compatible

v5: minimal UI + gradio 4.44 compatible

fix: downgrade to gradio 4.44 (more stable CSS, better iframe rendering)

fix(ui): drop all custom CSS that broke layout; use pure Gradio components

ui: polish with hero section, stat cards, custom CSS, bar plots, examples

feat: add datasets + pandas for live dataset operations

feat: rewrite as genuine interactive datasets playground (live filter/map/benchmark/stats)

fix: pin huggingface_hub<0.30 (HfFolder was removed, gradio 5.6 still imports it)

fix: remove gradio pin; rely on Space sdk_version for gradio install

fix: bump sdk_version to 5.6.0 to avoid HfFolder/audioop issues on Py3.13

fix: add audioop-lts for Python 3.13 compatibility (pydub dep)

fix: trim unused deps so Space starts cleanly

Initial commit: Advanced Dataset Tutorial

initial commit