Folder Structure

my-app/
├── app/                    # Expo Router file-based routing
│   ├── (app)/              # Authenticated application routes
│   ├── (onboarding)/       # Optional onboarding flow
│   ├── _layout.tsx         # Root layout and providers
│   └── index.tsx           # Initial route
├── src/
│   ├── components/         # Shared UI components
│   ├── features/           # Optional feature integrations
│   ├── lib/                # Shared clients and utilities
│   ├── session/            # Session provider and hooks
│   └── expojet-features.ts # Feature manifest
├── assets/                 # Images, fonts, icons
├── .maestro/               # E2E test flows
├── app.json                # Expo config
├── package.json
├── tsconfig.json
└── .env.example

my-app/
├── apps/
│   ├── mobile/             # Expo SDK 57 mobile app
│   │   ├── app/            # Expo Router routes
│   │   ├── src/            # Source code
│   │   ├── app.json        # Expo config
│   │   └── package.json
│   └── api/                # Backend server
│       ├── src/
│       │   ├── index.ts    # Server entrypoint
│       │   ├── app.ts      # API application
│       │   ├── db/         # Database client and schema
│       ├── drizzle/        # Migrations (if using Drizzle)
│       └── package.json
├── packages/
│   └── api-contract/       # Shared API types and contracts
├── expojet.jsonc           # Project manifest
├── package.json            # Workspace root
├── pnpm-workspace.yaml
└── turbo.json

src/
├── App.tsx                     # Root component
├── navigation/
│   ├── RootNavigator.tsx       # Auth state routing
│   ├── AppNavigator.tsx        # Main app (tabs/drawer)
│   └── AuthNavigator.tsx       # Auth flow stack
└── screens/
    ├── HomeScreen.tsx
    ├── ExploreScreen.tsx
    ├── SignInScreen.tsx
    └── SignUpScreen.tsx