Choose menu anchors, link targets in plugin settings and existing post terms

A menu entry picks its anchor from the linked page, link settings of plugins and own menu
links get page and PDF choice next to the address, and the post settings offer existing
categories and tags to click.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

templates/admin/menus.html.twig

@@ -3,6 +3,7 @@
 {% block title %}Menüs{% endblock %}
 {% block heading %}Menüs{% endblock %}
 {% block lead %}Inhalte suchen und hinzufügen. Rechts bestimmst du Beschriftung, Reihenfolge und Unterpunkte.{% endblock %}
+{% block styles %}<link rel="stylesheet" href="/assets/media-dialog.css?v={{ kant_version() }}">{% endblock %}
 {% block scripts %}<script type="module" src="/assets/menu-editor.js?v={{ kant_version() }}"></script>{% endblock %}
 {% block content %}
 {% include 'admin/menu-icons.html.twig' %}
@@ -16,7 +17,7 @@
         </section>
         <details class="card"><summary>Eigener Link</summary><div class="card-body">
             <label for="link-label">Beschriftung</label><input id="link-label" maxlength="80" placeholder="Kontakt">
-            <label for="link-url">Adresse</label><input id="link-url" maxlength="2048" placeholder="https://… oder /kontakt">
+            <label for="link-url">Adresse</label><div class="link-field" data-link-field><input id="link-url" maxlength="2048" placeholder="https://… oder /kontakt" data-link-input></div>
             <p class="field-help">Auch mailto: und tel: sind möglich.</p>
             <label class="check-label" for="link-new-tab"><input id="link-new-tab" type="checkbox"> In neuem Tab öffnen</label>
             <button type="button" class="secondary" id="menu-add-url">Link hinzufügen</button>