${buildBrandedHeaderMarkup({
title: config.unavailableTitle || 'AI Assisted Block Editor Coming Soon',
subtitle: config.unavailableSubtitle || 'Sign up for updates.',
titleId: 'mwp-abe-unavailable-title',
headerClassName: 'mwp-abe-modal-header',
copyClassName: 'mwp-abe-modal-header-copy',
actionsMarkup: `
${config.unavailableMessage || 'AI Automated Block Editor is coming soon. Join our waitlist to get early updates, sneak peeks, and be among the first to know when the plugin officially launches. We will let you know as soon as it is available.'}