- Add multi-currency exchange rate API integration (GetRateForCoin)
- Implement native TRX transfer detection alongside TRC20 USDT transfers
- Replace deprecated Tronscan API with Trongrid API for better reliability
- Add TRON Grid API key configuration support
- Refactor order service to support multiple tokens and currencies
- Update wallet address locking/unlocking to track token type
- Add base58 and gjson dependencies for crypto operations
- Optimize SQLite connection with WAL mode and busy timeout
- Remove deprecated USDT rate job (replaced by dynamic rate API)
- Update order data model to include currency and receive address fields
- Enhance TRC20 callback with improved error handling and logging
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