Per-file class (keep conclusion / tested research code / patch snapshot /
generated pin / raw run output) with size and blob id for research/,
tests/validation/multigrid/*_evidence, output/ and BASELINE_JET_AMR.txt
at 0f8fdbc3. Draft for review; nothing removed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>