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

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

/// @title CRSN
/// @notice Draft: exactly 1,000,000,000 tokens, created once for an initial holder.
/// @dev Build with the exact OpenZeppelin version recorded in the project notes.
///      No subsequent minting, transfer tax, admin controls, or upgrades.
contract CRSNToken is ERC20 {
    uint256 public constant FIXED_SUPPLY = 1_000_000_000 * 10 ** 18;

    /// @param initialHolder The public wallet that receives the initial supply.
    /// @dev OpenZeppelin rejects the zero address. The recipient is not an admin.
    constructor(address initialHolder) ERC20("CRSN", "CRSN") {
        _mint(initialHolder, FIXED_SUPPLY);
    }
}