Bump CADGENBENCH_SHA to 037eade; add GT edit-diff report backfill tool

Gallery: show GT "answer-key" edit-diff for editing fixtures

Rename fixture-named result keys to sample-named keys

leaderboard: fixed 4-sample gallery, auto-size iframe, center modal

leaderboard: backfill tool to grid-ify already-published reports

leaderboard: backfill tool for edit_diff.png stills in render bucket

leaderboard: bump cadgenbench to 1010043 + legend backfill tool

leaderboard: download-zip button in merge-path report + backfill tool

leaderboard: add Tasks tab to browse benchmark fixtures

Serve rotating WebP turntables + GT generator