fix: pin gradio<6.12 — 6.12 breaks iframe loading via bad by-subdomain call

fix: replace gr.DataFrame with gr.HTML to fix Gradio 6.12 crash

docs: document Gradio 6.12 tab-switching bug + workaround

Cache-bust: force fresh binary download (ubuntu-22.04, glibc 2.35)

Rebuild: fetch ubuntu-22.04 binary (glibc 2.35, fixes GLIBC_2.39 error)

Final rebuild: ubuntu-22.04 binary (glibc 2.35, Bookworm-compatible)

Remove larql --version check; ubuntu-22.04 binary building now

Rebuild: binary is now at GitHub Releases (21 MB, pre-built on ubuntu-latest)

Simplified: download pre-built binary from GitHub Releases (no Rust build in image)

Fix: use system OpenBLAS (openblas-src system feature) — no from-source build

Fix: add libopenblas-dev, auto-download demo vindex from HF dataset on startup

Add LARQL Explorer: Gradio UI + Docker build

initial commit