Fix SVG download: use single quotes inside style attr, no duplicate style

Cap to top 30 categories, hide gr.File X button, single-row buttons, no duplicate title

SVG: standalone download (XML prolog, white bg, fixed dims) + Plotly first

Pin kaleido==0.2.1 + native SVG fallback when kaleido fails

UX: CSV/SVG download links, schema preview on load, cleaner SVG theme

Initial deploy: Apple/Claude design, DuckDB, 3 trained LoRAs