page.go
func (p *Page) WindowCount() (int, error) {
	windows, err := p.session.GetWindows()
	if err != nil {
		return 0, fmt.Errorf("failed to find available windows: %s", err)
	}
	return len(windows), nil
}
func (p *Page) WindowCount() (int, error) {
	windows, err := p.session.GetWindows()
	if err != nil {
		return 0, fmt.Errorf("failed to find available windows: %s", err)
	}
	return len(windows), nil
}
// WindowCount returns the number of available windows.