Design: Dialog-Baustein (Esc, Sperre waehrend Speichern, Fokus, Bottom-Sheet)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/styles/global.css

@@ -396,6 +396,7 @@ a.list-row:hover .cell-title { color: var(--accent-ink); }
 .dialog-body { padding: 16px 24px 8px; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; }
 .dialog-foot { display: flex; align-items: center; gap: 8px; padding: 16px 24px 20px; }
 .dialog-foot .grow { flex: 1; }
+@media (prefers-reduced-motion: reduce) { .overlay, .dialog { animation: none; } }
 
 .field { display: flex; flex-direction: column; gap: 6px; }
 .field > label { font-weight: 500; }