Add precomputed ML mechanistic labels as parquet (ml_preds/)

Bump CACHEBUST=8 + route esm1b/ parquets to separate data dir

Add cancer driver structures + updated VCF example + CACHEBUST=7

CACHEBUST=6: rebuild with ESM-IF1 DDG + Stability mechanism for 5 proteins

CACHEBUST=5 + fix download script to always overwrite parquets

Bump CACHEBUST=4 to pick up all 5 ESM2-enriched proteins

Bump CACHEBUST to re-download updated P60709/P61247 with ESM2 LLR

fix: add huggingface_hub dep + httpfs fallback + cache bust

refactor: serve parquet from local disk — baked in at build time

chore: sync Dockerfile.backend