ArkTreasury

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract ArkTreasury {
    address public owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyOwner(){ require(msg.sender == owner, "not owner"); _; }

    constructor(address owner_){ owner = owner_; emit OwnershipTransferred(address(0), owner_); }
    receive() external payable {}

    function transferOwnership(address newOwner) external onlyOwner {
        require(newOwner != address(0), "zero");
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

    function sweep(address payable to) external onlyOwner {
        to.transfer(address(this).balance);
    }
}