Also defines the canonical output format of design-system.md — the file the harness gates on — including its 4 hard requirements (the ## Design Reference heading, a real inspiration URL, at least one chroma-positive OKLCH token, and the hard-forbidden font exclusions).

This is routing step 1 of design-method/SKILL.md: read it before design-web, design-webapp, design-ios, or design-android, and before picking or auditing a single color/type/spacing value.

Design System — Token Core

Single source for token strategy — not values, values live in references/*.md and are read from there, never re-derived here. design-method/SKILL.md reads this file unconditionally as routing step 1, once per task, before dispatching to any move or target skill — that read is also what advances the harness past phase 0. If a design question is purely about a token (a color, a type pair, a spacing value) this file plus its reference index already answers it; otherwise continue back into design-method's routing.