fix: detach meldet nicht „alles erledigt“, solange nicht lesbare Fundstellen Verweise enthalten können; PageRewriter::apply liefert hidden_count; Tests für Sperre durch nicht lesbare Seiten und post_ids über der Obergrenze

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

tests/Unit/Integrations/Divi/Design/PageRewriteReportTest.php

@@ -45,14 +45,20 @@ final class PageRewriteReportTest extends TestCase
      * @param list<array{post_id: int, reason: string}> $skipped
      * @return array<string, mixed>
      */
-    public static function applied(int $saved, int $remaining, array $skipped = []): array
+    public static function applied(int $saved, int $remaining, array $skipped = [], int $hidden = 0): array
     {
         $rows = [];
         for ($i = 0; $i < $saved; ++$i) {
             $rows[] = ['post_id' => 12 + $i, 'revision_id' => 900 + $i, 'nodes' => 2];
         }
 
-        return ['saved' => $rows, 'remaining' => $remaining, 'warnings' => [], 'skipped' => $skipped];
+        return [
+            'saved' => $rows,
+            'remaining' => $remaining,
+            'warnings' => [],
+            'skipped' => $skipped,
+            'hidden_count' => $hidden,
+        ];
     }
 
     public function testEmptyMeansNothingToWriteNothingBlockedNothingHidden(): void