feat(blockchain-service): implement complete blockchain service with DDD + Hexagonal architecture
- Domain layer: ChainType, EvmAddress, TxHash, TokenAmount, BlockNumber value objects
- Domain events: DepositDetected, DepositConfirmed, WalletAddressCreated, TransactionBroadcasted
- Aggregates: DepositTransaction, MonitoredAddress, TransactionRequest
- Infrastructure: Prisma ORM, Redis cache, Kafka messaging, EVM blockchain adapters
- Application services: AddressDerivation, DepositDetection, BalanceQuery
- API: Health, Balance, Internal controllers with Swagger documentation
- Deployment: Docker, docker-compose, deploy.sh, health-check scripts
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
hailin
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