48. Governor pattern

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IToken { function balanceOf(address) external view returns (uint256); }
contract Gov {
    IToken public immutable token;
    struct P { address target; bytes data; uint256 fv; uint256 av; bool done; }
    P[] public proposals;
    mapping(uint256 => mapping(address => bool)) public voted;
    constructor(IToken t) { token = t; }
    function propose(address target, bytes calldata data) external returns (uint256) { /* TODO */ }
    function vote(uint256 id, bool support) external { /* TODO */ }
    function execute(uint256 id) external { /* TODO */ }
}