What problem does it solve? Building a modern React or Next.js application involves many decisions—project scaffolding, component architecture, styling, data fetching, routing, forms, testing, and deployment. This Skill organizes that entire lifecycle into a phased workflow so nothing is missed and each step follows current Next.js 14+ App Router patterns. ## Core Features & Use Cases - Eight-Phase Workflow: Covers project setup, component architecture, styling, data fetching, routing, forms, testing, and deployment with concrete actions per phase. - Modern Stack Guidance: Recommends TypeScript 5+, Tailwind CSS v4, Zustand, React Query, React Hook Form with Zod, Vitest, and Playwright. - Quality Gates: Provides a checklist covering TypeScript compilation, tests, linting, Core Web Vitals, accessibility, and responsive design. - Use Case: When starting a new Next.js dashboard, follow the phases to scaffold the app, build Server Components, wire up React Query data fetching, add Zod-validated forms, and deploy to Vercel. ## Quick Start Ask the assistant to scaffold a new Next.js 14 project with App Router, TypeScript, and Tailwind CSS following this workflow.