feat: rescue 12 older orphan benchmark files (12 rows from 2026-03-23 and 2026-03-30 runs)

feat: rescue 26 orphan F8 sweep files (91 rows, 13 models x 2 suites)

test(scaffold-poc): remove after successful gating verification

test(scaffold-poc): verify HfApi append pattern with unique filename

docs: remove dangling repo reference, generalize voice

feat: initial import of 140 benchmark rows from 56 historical runs

docs: add reference envelope schema (v1)

chore: add .gitattributes for Parquet LFS

docs: add dataset card with schema, quickstart, and configs block

initial commit