apps/monolith/
└── src/
    ├── index.ts              ← App bootstrap
    ├── config/
    │   └── di-container.ts   ← Dependency injection
    ├── api-gateway/
    │   ├── middleware/       ← Global middleware
    │   ├── routes/           ← REST endpoint handlers
    │   └── errors/           ← Custom error classes
    └── modules/              ← Feature modules (gateway, etc.)

packages/domain/
├── entities/              ← Domain objects with identity
│   ├── user.ts
│   ├── session.ts
│   └── message.ts
├── value-objects/         ← Immutable value types
│   ├── email.ts
│   ├── user-id.ts
│   └── session-id.ts
├── events/                ← Domain events
│   ├── user-created.ts
│   └── session-started.ts
└── index.ts

packages/application/
├── ports/                 ← Interface definitions
│   ├── user-repository.ts
│   ├── cache-port.ts
│   ├── adapter.ts        ← AI adapter interface
│   └── session-store.ts
├── use-cases/            ← Business workflows
│   ├── create-user.ts
│   └── authenticate.ts
└── index.ts

packages/infrastructure/
├── database/             ← MongoDB implementations
│   ├── user-repository.ts
│   └── mongodb-client.ts
├── cache/                ← BunRedis + fallback
│   └── redis-cache.ts
├── i18n/                 ← Translation service
│   └── i18n-service.ts
├── logging/              ← Multi-transport logger
│   └── smart-logger.ts
└── index.ts

modules/gateway/
├── domain/
│   ├── entities/
│   │   └── session.ts    ← GatewaySession entity
│   ├── ports/
│   │   ├── adapter.ts   ← AIAdapterPort interface
│   │   └── session-store.ts
│   └── index.ts
├── application/
│   ├── use-cases/
│   │   ├── create-session.ts
│   │   ├── get-session.ts
│   │   └── send-prompt.ts
│   └── index.ts
└── infrastructure/
    ├── adapters/
    │   └── openclaw.ts   ← ACP WebSocket client adapter
    ├── session-store/
    │   └── sqlite.ts     ← BunSQLite session store
    └── index.ts