* feat(learn): add Learn page and integrate with sitemap and footer
* feat(learn): create Learn page component for website
* feat(learn): update Learn page to display message for no articles and replace InfinitePostGrid with PostCard component
* feat(learn): implement live Ghost client for immediate post updates and set dynamic revalidation for Learn page
* feat(status.app): add /learn page to display Status Insights posts from Ghost, including sitemap entry, footer link, and i18n messages
* refactor: clean up import statements and HTML structure for better readability