Case-B extract of the as-built dark UI into design/: 9-section DESIGN.md,
W3C DTCG tokens.tokens.json, brand/palette.css + assets, and inspiration/
provenance (incl. the rendered red-shade decision). Two owner calls layered
in: red elevated to the single brand accent (#DC2626), two-tier radius
(4px controls / 8px containers). AGENTS.md gains the read-before-UI Design
line + design/ in the layout tree; ROADMAP gains the design-checker cleanup
backlog. No UI code changed.
Keysat