src/
├── app/                    # App entry point
│   ├── App.tsx            # Main app component with routing
│   └── main.tsx           # React entry point
├── features/              # Feature-based modules
│   ├── admin/             # Admin panel (Dashboard, User Management, Library)
│   ├── auth/              # Authentication (Login, SignUp, RoleSelection)
│   ├── student/           # Student game view
│   ├── teacher/           # Teacher curriculum builder
│   ├── parent/            # Parent monitoring view
│   └── offline/           # Offline mode support
├── shared/                # Shared components
│   └── components/
│       ├── ui/            # UI primitives (Button, Card, Modal, Badge, etc.)
│       ├── layout/        # Layout components (Navbar, RoleCard)
│       └── renderers/     # Question renderers (VerticalMath, Numpad)
├── stores/                # Zustand/localStorage state management
├── services/              # External services (Gemini AI, registries)
├── types/                 # TypeScript type definitions
├── theme/                 # Theme provider and configuration
└── lib/                   # Firebase and config utilities