integrity-app/ ├── backend/ │ ├── app.js # Main backend server file │ ├── routes/ # API routes │ ├── controllers/ # Business logic │ ├── models/ # Data models (if needed) │ ├── package.json # Backend dependencies │ └── .env # Backend environment variables ├── frontend/ │ ├── public/ │ ├── src/ │ │ ├── components/ # React components │ │ ├── App.js # Main app entry point │ │ ├── index.js # ReactDOM rendering │ └── package.json # Frontend dependencies └── README.md