[PROJECT_REPOSITORY_NAME]/
├── packages/
│   ├── shared/                   # Shared types and utilities
│   ├── smart-contracts/          # Solidity contracts + ZK circuits
│   │   ├── contracts/            # Smart contracts
│   │   ├── circuits/             # Circom ZK circuits
│   │   └── test/                 # Contract tests
│   └── subgraph/                 # The Graph indexing
├── services/
│   ├── api/                      # Backend API (Node.js + PostgreSQL)
│   │   ├── src/controllers/      # API endpoints
│   │   └── src/middlewares/      # Auth, validation
│   │   ├── src/models/           # Data Models
│   │   ├── src/routes/           # API Routes with OpenAPI documentation
│   │   ├── src/services/         # Business logic
│   └── web/                      # Frontend (Next.js + React)
│       ├── app/                  # App router pages
│       ├── components/           # UI components
│       └── services/             # API clients, blockchain
└── infra/
    └── docker-compose.yaml       # Optional global infrastructure