feat: lit-divi-insert prüft Schleifen-Inhalte im Kontext des Ziels; neue Schleife plus Inhalt in einem Aufruf fail closed (X3)

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

tests/Support/DiviWriterFixture.php

@@ -92,7 +92,8 @@ final class DiviWriterFixture
     }
 
     /**
-     * The writer over the page of DiviFixtures::givenPost(), saving into $saved (see saver()).
+     * The writer over the page of DiviFixtures::givenPost(), saving into $saved (see saver()); $registry is the
+     * composition's dynamic content map (see composition()).
      *
      * @param list<string>    $saved
      * @param list<Throwable> $failures
@@ -104,7 +105,8 @@ final class DiviWriterFixture
         ?DiviPageLoader $loader = null,
         ?GlobalEdits $globals = null,
         ?ThemeBuilderEdits $themeBuilder = null,
-        ?SimilarSections $similar = null
+        ?SimilarSections $similar = null,
+        ?DynamicContentMap $registry = null
     ): DiviWriter {
         $design = self::designReader();
 
@@ -113,7 +115,7 @@ final class DiviWriterFixture
             self::saver($saved, $failures),
             self::log(),
             $design,
-            self::composition($design, $unfiltered),
+            self::composition($design, $unfiltered, $registry),
             $globals,
             $themeBuilder,
             $similar