fix(design): the lab draws with the primitives' own classes, not a height-ladder copy; DESIGN no longer claims accent-color tints the colour well (E28)

frontend/src/design-lab/labTokens.ts

@@ -1,17 +1,7 @@
 // The decided values the lab's reference renderings share (batches A and B, 2026-09-24). The colour
 // rules are real now (E28 S3a): each constant below names the index.css utility or token that holds
-// it, so the lab renders what the app ships. The height ladder moves into ui/Button in S3b.
-
-/** B1 compact ladder: explicit heights, so one toolbar row lines up at 28. */
-export const H = {
-  md: "h-8 px-3 text-sm gap-1.5",
-  sm: "h-7 px-2.5 text-sm gap-1.5",
-  xs: "h-6 px-2 text-xs gap-1",
-  iconSm: "w-7 h-7",
-  icon: "w-8 h-8",
-  field: "h-8",
-  bar: "h-7",
-} as const;
+// it, so the lab renders what the app ships. The height ladder lives in the primitives (ui/buttonStyles,
+// ui/fieldStyles), and a lab drawing takes their classes (F31).
 
 /** A4: the input edge, ≥ 3:1 against the page in every scheme and mode (index.css --edge-strong). */
 export const STRONG = "var(--edge-strong)";