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>

public/assets/admin.css

@@ -990,3 +990,11 @@ details.card > summary:hover { background: #fafbf8 }
 .media-field-thumb { width: 96px; height: 64px; object-fit: cover; border-radius: 6px; flex-shrink: 0; background: #eef1eb }
 .media-field-name { font-size: 13px; color: var(--muted); overflow-wrap: anywhere; min-width: 0 }
 .media-field-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px }
+/* Ein Linkfeld: die Adresse zum Tippen, darunter Seite oder PDF zum Wählen. */
+.link-field-actions { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 4px }
+.link-field-actions .text-button { padding: 4px 0; font-size: 13px }
+/* Vorhandene Kategorien und Schlagwörter zum Anklicken. */
+.term-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px }
+.term-chip { border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px; padding: 4px 11px; font-size: 12px; cursor: pointer }
+.term-chip[aria-pressed="true"] { background: #edf4dc; border-color: var(--accent); font-weight: 650 }
+.term-chip[aria-pressed="true"]::before { content: '✓ '; }