Environment selector comparison

One frozen spec, one shared suite. A uses UI SDK; B uses plain React. Scores are findings.

Variant A — UI SDK

Variant B — React

Latest score: proof

CategoryVariant AVariant BInert
open4/44/40/4
aria6/66/60/6
keyboard5/55/50/5
filter4/44/40/4
select2/22/20/2
dismiss2/22/20/2
focus5/55/50/5
axe2/22/21/2
Total30/3030/301/30

Inert negative control