catalog-baseline.sh extracts runner_version from the benchlocal results
JSON and stamps quality_env: { harness: "benchlocal-cli X.Y.Z" } next to
quality_8pk — the half-deployed-sandbox lesson (§2.1.4): a quality number
without its harness fingerprint is unreproducible. sandbox_digest rides
along once benchlocal emits it (upstream candidate). Arms on DIFFERENT
harness versions → loud warn + field omitted (the arm delta isn't
comparable). Guard validates the shape; fixtures updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EfF565T9eSLaqGzidyJ1Pm
48238e4cbb