veta-design-md

Generate and maintain DESIGN.md for the Veta product — a structured design system document with YAML tokens (colors, typography, spacing, components) and markdown rationale following the google-labs-code/design.md spec. Use when creating DESIGN.md from scratch, updating it after palette or typography changes, documenting visual identity, or when another skill references the design system. Also trigger when the user says "update the design doc", "create design guidelines", "document the design system", "DESIGN.md", or any task involving brand/visual identity documentation for Veta — even if they don't say "DESIGN.md" explicitly.