fix(drive-and-save): consistent cheapest-bar color, graceful LLM-failure in build_ask, suppressed-row grounding test

chore(drive-and-save): ZeroGPU requirements + README hardware header

test(drive-and-save): gradio_client reachability smoke for named endpoints

feat(drive-and-save): @gr .api endpoints (catalog/lookup/ask) + NL UI section

feat(drive-and-save): result builders (catalog/lookup/ask) + row transform

fix(drive-and-save): close grounding bypass (bare numbers), tighten allowed set, wire gpu_seconds

feat(drive-and-save): llm backend (guarded zerogpu + hf fallback, provider detect)

feat(drive-and-save): llm.write_recommendation with number-grounding fallback

feat(drive-and-save): llm.parse_request (catalog-validated NL parse)

feat(drive-and-save): add llm config block

chore(drive-and-save): migrate Space to gradio 5.x (Phase 1 gate)

fix(drive-and-save): guard headline for no-comparison case; drop dead suppress_mode; add data .gitignore

chore(drive-and-save): deploy script (subtree push to hf-drive-and-save)

feat(drive-and-save): Gradio UI (headline + ranked bars + CTA)

feat(drive-and-save): load curated slice from private HF Dataset

fix(drive-and-save): no negative savings when home metro is suppressed

feat(drive-and-save): core logic (config, H3 distance, drive-time, ranking, CTA)

feat(drive-and-save): scaffold Space (config, deps, README)