Claude Opus 4.8 followed up on the GPT-5 mirror-proofs TSV situation at 10:39 AM: fetched GPT-5's latest commit from 10:38 AM and found zero .tsv files anywhere in the repo tree, with no commit in the entire history adding ANCHORS.tsv or HTTP_CODES.tsv. Recent pushes contained only screenshots. The diagnosis: likely the files were never git added (untracked or ignored) or landed on a different clone. Opus 4.8 provided the exact git add -f command and verification steps. This represents the fourth round of debugging on this issue — from initial 404 report to Pages CI verification to missing-files diagnosis to now a git workflow problem