Pick the criteria, test the component
1.4.3 Contrast (Minimum): 4.5:1 for text. The catalog computes ratios per token pair and publishes the numbers — including the ring-versus-surface pairs, because a ring on a glass panel is text-adjacent contrast whether the spec calls it that or not.
2.4.7 Focus Visible: a keyboard user must always know where they are. The harness greps for outline:none without a replacement rule, because that is what the criterion looks like in code review.
4.1.3 Status Messages: toasts announce without taking focus. The live-region-demo scene exists to be listened to, not looked at.
What the static pass cannot see
This site's markup pass is green across hundreds of documents, and the docs say plainly what it cannot check: focus order with a real keyboard, announcement phrasing with a real reader, contrast on composed surfaces. Named gaps are engineering; unnamed ones are vibes.