feat: Presets als Stapel, Gruppen-Presets und clear_overrides im Composer

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

src/Integrations/Divi/DiviIntegration.php

@@ -137,7 +137,7 @@ final class DiviIntegration implements Integration
     {
         return new DiviContentComposer(
             $this->schema,
-            new DiviComposition($this->modules, $this->design),
+            $this->composition(),
             new DiviSaver(),
             $this->design,
             $writable
@@ -225,13 +225,22 @@ final class DiviIntegration implements Integration
     {
         return new ThemeBuilderIntegration(
             $this->themeBuilderAccess,
-            new DiviComposition($this->modules, $this->design),
+            $this->composition(),
             new DiviSaver(),
             $this->log,
             new DynamicFields($this->schema)
         );
     }
 
+    /**
+     * The one wiring of the composition for every tool that composes (spec D7): presets and Divi's option groups come
+     * from the design system writer, so a stack or group preset in any write tool resolves against the live book.
+     */
+    private function composition(): DiviComposition
+    {
+        return new DiviComposition($this->modules, $this->design, presetSource: $this->designWriter);
+    }
+
     private function writer(DiviPageLoader $loader): DiviWriter
     {
         return new DiviWriter(
@@ -239,7 +248,7 @@ final class DiviIntegration implements Integration
             new DiviSaver(),
             $this->log,
             $this->design,
-            new DiviComposition($this->modules, $this->design),
+            $this->composition(),
             new GlobalEdits($this->access, $this->globalUsages()),
             new ThemeBuilderEdits($this->themeBuilderAccess, fields: new DynamicFields($this->schema)),
             new SimilarSections($this->access)
@@ -253,7 +262,7 @@ final class DiviIntegration implements Integration
 
     private function presetComposer(): PresetComposer
     {
-        $composition = new DiviComposition($this->modules, $this->design);
+        $composition = $this->composition();
 
         return new PresetComposer(
             $composition->composer(),