Skill: Token Build

Turn the DTCG token source of truth into platform-ready outputs. Tokens are authored once; every platform output is generated.

Steps

1. Read workflows/token-build.md (architecture, tool options, resolution rules, output targets, CI).
2. Pick the tool: Style Dictionary (multi-platform, the default), Tokens Studio (Figma-owned tokens — pairs with figma-integration), W3C DTCG export, or a small custom script (model on scripts/validate_tokens.py).
3. Honor the resolution rules: resolve aliases to final values per platform; expose semantic + component tokens (primitives stay internal); emit base + dark/brand/density overrides (tokens/theming.json) as deltas only; format by $type.
4. Generate the requested target(s): CSS :root vars, Tailwind v4 @theme, typed JS/TS, iOS Asset Catalog + Color.DS/Spacing, Android colors.xml/Compose theme.
5. Wire CI: on tokens/*.json change, run scripts/validate_tokens.py, regenerate, fail if committed artifacts are stale; gate colors with scripts/contrast.py.

Verification (definition of done)

• python3 scripts/validate_tokens.py passes (no unresolved aliases).
• Regenerating produces no diff vs. committed artifacts.
• Dark/brand/density outputs contain only deltas, not full duplicates.