Field Guide 13: a 25-item decision guide that scores four architectures (framework-only components, native web components, web components with generated React wrappers, and a hybrid) against 11 weighted criteria and 2 gates. The kit has the matrix as JSON, a zero-dependency scorer that names the criteria that decided the ranking, three worked team profiles that land on three different answers, and a generator that turns a Custom Elements Manifest into React 19 JSX types.
Before committing a design system to web components, or when a team already on web components is asking whether its React wrapper package is still needed now that React 19 supports custom elements.