What problem does it solve? Setting up a new Expo React Native project requires manually wiring navigation, auth, TypeScript config, linting, and boilerplate screens before any real feature work can begin. This Skill generates a complete, runnable mobile app structure from a short product brief so you start with working screens instead of an empty template. ## Core Features & Use Cases - Full App Scaffolding: Generates an Expo SDK 54 + React Native + TypeScript project with Expo Router tab navigation, UI components, an API client, and typed path aliases. - Optional Clerk Authentication: Adds a Clerk provider, sign-in/sign-up screens, and SecureStore token caching when the --auth flag is used. - Quality Tooling Included: Ships with Biome linting, TypeScript strict mode, and an EAS build configuration pattern. - Use Case: Describe a fitness tracker app with Home, Workouts, and Profile tabs, and receive a complete project that runs immediately with bun start, including dark-themed screens and Lucide tab icons. ## Quick Start Ask the assistant to scaffold a new Expo app named My App with tabs for Home, Workouts, and Profile, with Clerk authentication enabled.