Project

/BromineTech 
│
├── /backend          # Express.js backend
│   ├── /src
│   ├── package.json
│   └── tsconfig.json # TypeScript configuration for backend
│
├── /frontend         # Next.js frontend
│   ├── /src
│   ├── package.json
│   └── tsconfig.json # TypeScript configuration for frontend
│
└── /types            # Shared TypeScript types
    └── index.d.ts    # Define shared types here