feat(reward-service): Implement complete reward service with DDD architecture
## Core Features
- 6 types of reward calculation (Share Right 500U, Province Team 20U,
Province Area 15U+1% hashpower, City Team 40U, City Area 35U+2% hashpower,
Community Right 80U)
- 24-hour countdown mechanism for pending rewards
- Reward settlement with multi-currency support (BNB/OG/USDT/DST)
- Automatic reward expiration with scheduled tasks
## Domain Layer
- RewardLedgerEntry aggregate root with state machine
(PENDING -> SETTLEABLE -> SETTLED, PENDING -> EXPIRED)
- RewardSummary aggregate for user reward overview
- Value objects: Money, Hashpower, RewardSource, RewardStatus, RightType
- Domain events: RewardCreated, RewardClaimed, RewardSettled, RewardExpired
- Domain services: RewardCalculationService, RewardExpirationService
## Application Layer
- RewardApplicationService for orchestrating business workflows
- RewardExpirationScheduler for automatic expiration processing
## Infrastructure Layer
- PostgreSQL persistence with Prisma ORM
- Redis caching integration
- Kafka event publishing/consuming
- External service clients (Referral, Authorization, Wallet)
## API Layer
- REST endpoints: /health, /rewards/summary, /rewards/details,
/rewards/pending, /rewards/settle
- JWT authentication with Passport.js
- Swagger/OpenAPI documentation
## Testing (77 tests, 100% pass rate)
- 43 unit tests for domain logic (Money, Hashpower, aggregates)
- 20 integration tests for application services
- 14 E2E tests for API endpoints
- Docker Compose test infrastructure (PostgreSQL, Redis, Kafka)
## Documentation
- docs/ARCHITECTURE.md - DDD architecture overview
- docs/API.md - REST API documentation
- docs/DEVELOPMENT.md - Developer guide
- docs/TESTING.md - Testing guide
- docs/DEPLOYMENT.md - Deployment guide
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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