Separate the W&K names in the category list

The newline-separated names were rendered as one run-on string.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

contao/dca/tl_wk_category.php

@@ -26,7 +26,7 @@ $GLOBALS['TL_DCA']['tl_wk_category'] = [
             'panelLayout' => 'search,limit',
         ],
         'label' => [
-            'fields' => ['sorting', 'title', 'kind', 'wkNames'],
+            'fields' => ['title', 'kind', 'wkNames'],
             'showColumns' => true,
         ],
         'operations' => [

src/EventListener/DataContainer/CategoryLabelListener.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mummert\ContaoWkSyncBundle\EventListener\DataContainer;
+
+use Contao\CoreBundle\DependencyInjection\Attribute\AsCallback;
+use Contao\DataContainer;
+use Contao\StringUtil;
+
+/**
+ * Kategorienliste: die W&K-Bezeichnungen (eine pro Zeile) lesbar getrennt anzeigen.
+ */
+#[AsCallback(table: 'tl_wk_category', target: 'list.label.label')]
+class CategoryLabelListener
+{
+    /**
+     * @param list<string> $args Spaltenwerte in der Reihenfolge von list.label.fields
+     *
+     * @return list<string>
+     */
+    public function __invoke(array $row, string $label, DataContainer $dc, array $args): array
+    {
+        $names = array_filter(array_map(trim(...), explode("\n", str_replace("\r", '', (string) ($row['wkNames'] ?? '')))));
+
+        $args[2] = implode('<span class="tl_gray"> · </span>', array_map(StringUtil::specialchars(...), $names));
+
+        return $args;
+    }
+}