Skill: Design Tokens

Produce and maintain DTCG ($type/$value) tokens following the project's 3-tier system.

Steps

1. Read .claude/rules/tokens-and-color.md → "Token System" + "Color Guidelines" and .claude/rules/typography-and-spacing.md for the rules (4px base, Major Third scale, OKLCH palette generation, dark-mode-at-semantic-layer).
2. Read the relevant existing files in tokens/ to match structure: colors.json, typography.json, spacing.json, shadows.json, borders.json, breakpoints.json, motion.json, gradients.json, opacity.json, blur.json, sizing.json, states.json, theming.json.
3. Generate/extend tokens:
   • Primitives = raw values (never used directly). Semantic = purpose aliases. Component = component-scoped.
   • New palettes: generate 11 OKLCH shades; verify 500 ≥ 4.5:1 on white (text), 600 ≥ 3:1 (UI) using the a11y-audit skill / scripts/contrast.py.
   • Multi-brand/density → theming.json.
4. Validate: run python3 scripts/validate_tokens.py (JSON validity + alias resolution).

Output

DTCG JSON. Preserve $description on every token. Reference, never hardcode.