webapp-builder

Build or extend real Web applications in a repository. Use for project-level frontend implementation involving app structure, routes, state, data flow, API integration, component architecture, shadcn project workflows, React/Next performance hygiene, build/test wiring, or promotion from prototype/artifact to app. Do not use for visual concept ownership, single-file HTML artifacts, browser QA ownership, product behavior invention, Figma operations, or backend/service ownership beyond the Web app integration surface.