lib/
├── main.dart
├── models/
│   ├── user.dart
│   └── auth_response.dart
├── screens/
│   ├── login_screen.dart
│   ├── register_screen.dart
│   └── home_screen.dart
├── widgets/
│   ├── auth_form.dart
│   └── loading_spinner.dart
├── utils/
│   └── api.dart
├── services/
│   ├── auth_service.dart
│   └── token_service.dart
└── assets/
    └── logo.png

lib/: This is the main folder for the application code.
main.dart: The entry point of the application.
models/: This folder contains the application models and data classes.
screens/: This folder contains the application screens or views.
widgets/: This folder contains the application reusable widgets.
utils/: This folder contains the application utility classes and functions.
services/: This folder contains the application services such as API or database access.
assets/: This folder contains the application static assets such as images and fonts.
test/: This folder contains the application unit and widget tests.

• Auth
• Advanced Navigation (declarative navigation)