User:Euphoria/common.js

// Load necessary module asynchronously
mw.loader.using(['mediawiki.util'])
    .then(function () {
        // Preserve specific elements within the dropdown
        var $dropdown = $('.vector-menu-dropdown');
        var $preserve = $dropdown.find('.preserve');

        // Clear the dropdown and append the preserved elements
        $dropdown.empty().append($preserve);

        // Add a link to the 'p-cactions' portlet pointing to CentralAuth
        var sulLink = mw.util.addPortletLink(
            'p-cactions',
            mw.util.getUrl('Special:CentralAuth/' + mw.user.getName()),
            'SUL',
            'ca-sul',
            'SUL',
            null,
            '#ca-sul'
        );
    });