// SPDX-License-Identifier: MIT
pragma solidity 0.8.30;
/// @notice Original educational contract. Test networks only; holds no ETH.
contract Counter {
    uint256 public value;
    event Incremented(address indexed caller, uint256 newValue);
    function increment() external {
        value += 1;
        emit Incremented(msg.sender, value);
    }
}