Agent Skills: ring:validating-ux-completeness

Validating that UX specifications are complete before technical design: a read-only checklist over wireframes, states, responsive behavior, accessibility, and component-library alignment, emitting a DESIGN VALIDATED / NEEDS REVISION verdict to design-validation.md. Standalone utility — run after a product-designer pass and before the TRD when the feature has UI; the pre-dev orchestrators recommend it when the feature has UI. Use to check UI design completeness. Skip for backend-only, API-only, or no-UI work.