- add TON chain, token, RPC, address normalization, and order matching support
- add liteclient scanner with masterchain/shard catch-up and Jetton validation
- add TON manual payment verification and focused tests
- add rpc node purpose support for general/manual_verify/both
- keep scan, WSS and health checks away from manual_verify nodes
- fallback manual hash verification from general RPC to manual_verify RPC
- add public cashier hash submission path and errno responses
- update tests for RPC selection, failover and manual payment flows
- Rewrite Solana scanner: stateless scan with processed-signature cache, query wallet + USDT ATA + USDC ATA addresses to cover all SPL transfers
- Add network field to transaction_lock (4-tuple unique index) and order flow
- Add wallet management endpoints (add/list/get/status/delete) with token auth
- Add network info to Telegram payment notification
- Add USDC hint to test script GMPay prompt
- Add API docs and Solana scanning docs
- 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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