maybeUpdateSize

fn maybeUpdateSize(resize_flag: bool) void {
    if (!resize_flag) return;

    const fd = global_progress.terminal.handle;

    if (is_windows) {
        var info: windows.CONSOLE_SCREEN_BUFFER_INFO = undefined;

        if (windows.kernel32.GetConsoleScreenBufferInfo(fd, &info) != windows.FALSE) {
            // In the old Windows console, dwSize.Y is the line count of the
            // entire scrollback buffer, so we use this instead so that we
            // always get the size of the screen.
            const screen_height = info.srWindow.Bottom - info.srWindow.Top;
            global_progress.rows = @intCast(screen_height);
            global_progress.cols = @intCast(info.dwSize.X);
        } else {
            std.log.debug("failed to determine terminal size; using conservative guess 80x25", .{});
            global_progress.rows = 25;
            global_progress.cols = 80;
        }
    } else {
        var winsize: posix.winsize = .{
            .row = 0,
            .col = 0,
            .xpixel = 0,
            .ypixel = 0,
        };

        const err = posix.system.ioctl(fd, posix.T.IOCGWINSZ, @intFromPtr(&winsize));
        if (posix.errno(err) == .SUCCESS) {
            global_progress.rows = winsize.row;
            global_progress.cols = winsize.col;
        } else {
            std.log.debug("failed to determine terminal size; using conservative guess 80x25", .{});
            global_progress.rows = 25;
            global_progress.cols = 80;
        }
    }
}