fix: update lint:sol script to enforce no warnings and improve code quality

Author: YukiTsuchida

package.json

@@ -7,7 +7,7 @@
     "postinstall": "husky && forge build",
     "clean": "rm -rf build",
     "test": "forge test -vvv",
-    "lint:sol": "solhint -f table 'src/**/*.sol' 'test/**/*.sol' 'script/**/*.sol'",
+    "lint:sol": "solhint -f table --max-warnings 0 'src/**/*.sol' 'test/**/*.sol' 'script/**/*.sol'",
     "fmt:sol": "forge fmt",
     "coverage:sol": "forge coverage --report lcov"
   },

src/core/IInitiator.sol

@@ -4,7 +4,7 @@ pragma solidity ^0.8.20;
 import {MsgInitiateTx, MsgInitiateTxResponse, QuerySelfXCCResponse} from "../proto/cross/core/initiator/Initiator.sol";
 
 interface IInitiator {
-    event TxInitiated(bytes txId, address proposer);
+    event TxInitiated(bytes txId, address indexed proposer);
 
     function initiateTx(MsgInitiateTx.Data calldata msg_) external returns (MsgInitiateTxResponse.Data memory resp);