fix: lit/divi-presets-set – name und rename schließen sich aus, Namensprüfung vorziehen

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

src/Integrations/Divi/Design/DiviPresetsSetAbility.php

@@ -236,6 +236,17 @@ final class DiviPresetsSetAbility implements Ability
             return null;
         }
 
+        if ($existing === null && isset($item['rename'])) {
+            $errors[$field . '.rename'] = 'nur zusammen mit preset; für ein neues Preset name verwenden';
+
+            return null;
+        }
+        if ($existing !== null && isset($item['name'])) {
+            $errors[$field . '.name'] = 'zum Umbenennen rename verwenden';
+
+            return null;
+        }
+
         foreach (['name' => $existing === null, 'rename' => $existing !== null] as $key => $applies) {
             if (! $applies || ! is_string($item[$key] ?? null)) {
                 continue;
@@ -269,10 +280,12 @@ final class DiviPresetsSetAbility implements Ability
     /** Plain text of 1 to 100 characters, or null (ruling: preset names). */
     private function cleanName(string $name): ?string
     {
+        if (strlen($name) > self::NAME_MAX * 4) {
+            return null;
+        }
         $clean = sanitize_text_field($name);
-        $length = function_exists('mb_strlen') ? mb_strlen($clean) : strlen($clean);
 
-        return $clean === '' || $length > self::NAME_MAX || strlen($name) > self::NAME_MAX * 4 ? null : $clean;
+        return $clean === '' || mb_strlen($clean) > self::NAME_MAX ? null : $clean;
     }
 
     /**