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Refactor Bitcoin services into shared bitcoin-based abstractions (BitcoinBasedFeeService, BitcoinBasedClient) for UTXO blockchain reuse. Add full Firo support: node client, PayIn (register/send), PayOut (prepare/payout), DEX strategies, deposit addresses, asset seed data, and infrastructure config.
Firo is UTXO-based like Bitcoin and requires forwarding from deposit addresses to the liquidity address before payouts.
- Rewrite send() to use explicit UTXO input via createrawtransaction instead of sendmany (ensures only the specified deposit UTXO is spent) - Rewrite sendMany() with manual coin selection from liquidity address only (listunspent filtered by address) to prevent spending deposit/ payment UTXOs - Extract buildSignAndBroadcast() for shared raw TX building logic - Fix getBalance() to use listunspent on liquidity address instead of getbalance with default account (which returns negative due to Firo's legacy account system) - Remove unused FiroController and clean up FiroModule
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Summary
Test plan