- Add SystemWithdrawalApplicationService to handle system account transfers
- Add SystemWithdrawalController with endpoints for request, query, and account listing
- Add SystemWithdrawalStatusHandler to process blockchain confirmation/failure events
- Add SystemWithdrawalRequestedHandler in blockchain-service to execute ERC20 transfers
- Add getUserByAccountSequence endpoint in identity-service for user lookup
- Support dynamic memo generation based on actual source account name
- Dual-sided ledger entries for system account transfers
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
## Address Derivation Changes
- Change KAVA from Cosmos bech32 (kava1...) to EVM format (0x...)
- KAVA now uses same EVM address as BSC for deposit monitoring
- Add KAVA to evmChains set for automatic monitoring registration
## Database Schema Updates (Migration: 20241208000000)
- MonitoredAddress: add address_type, account_sequence, system_account_type,
system_account_id, region_code columns
- DepositTransaction: add address_type, account_sequence, system_account_type,
system_account_id columns
- Make user_id nullable for system account support
- Create recovery_mnemonics table for account recovery
- Add indexes: idx_account_sequence, idx_type_active, idx_system_account_type,
idx_deposit_account, and recovery_mnemonics indexes
## New Features
- Withdrawal request handler and Kafka consumer
- Test USDT deployment scripts for KAVA and BSC
- Smart contracts for TestUSDT token
## Infrastructure Updates
- Update mappers for new schema fields
- Update application and infrastructure modules
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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