footerBand.test.ts reads the CSS vanilla-extract emits for styles.css.ts (so
@vanilla-extract/integration becomes a devDependency): one footer rule, the plate fill before
the color-mix fill, a mask faded on both axes, no border or radius. skyPlate.ts no longer
claims the darkest terrain is 0.0045 (that was Night's whole frame); it states the footer
region's minima per state and the measured link contrast.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>