heartfelt-backend/
├── src/
│   ├── app.js           // Main entry point
│   ├── controllers/     // Folder for route logic
│   ├── routes/          // Folder for route definitions
│   ├── middleware/      // Folder for middlewares
│   ├── utils/           // Folder for utility functions
│   └── prisma/          // Prisma setup (if using Prisma ORM)
├── .env                 // Environment variables (Google Client ID, DB connection, JWT secret)
└── package.json