Design System Component Usage Checker

Audits a proposed design against an established design system to determine which existing components it should reuse, where it deviates without justification, and which elements genuinely require new patterns — producing a component-by-component verdict, an inconsistency log, and a reuse-vs-net-new recommendation. Use when reviewing a screen or flow before handoff to confirm it leverages system components, when deciding whether a new pattern is warranted, or when flagging drift from the design system.