feat: lit/tb-list and the tool group "Divi Theme Builder"

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/Integrations/Divi/DiviIntegration.php

@@ -36,6 +36,7 @@ use LIT\MCP\Integrations\Divi\Schema\DiviModules;
 use LIT\MCP\Integrations\Divi\ThemeBuilder\DiviThemeBuilder;
 use LIT\MCP\Integrations\Divi\ThemeBuilder\ThemeBuilderAccess;
 use LIT\MCP\Integrations\Divi\ThemeBuilder\ThemeBuilderEdits;
+use LIT\MCP\Integrations\Divi\ThemeBuilder\ThemeBuilderIntegration;
 use LIT\MCP\Integrations\Integration;
 use LIT\MCP\Integrations\WordPress\Content\ContentComposer;
 use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
@@ -170,6 +171,17 @@ final class DiviIntegration implements Integration
         );
     }
 
+    /** The group "Divi Theme Builder" (lit/tb-*), sharing this integration's Theme Builder access (Etappe 3b). */
+    public function themeBuilder(): ThemeBuilderIntegration
+    {
+        return new ThemeBuilderIntegration(
+            $this->themeBuilderAccess,
+            new DiviComposition($this->modules, $this->design),
+            new DiviSaver(),
+            $this->log
+        );
+    }
+
     private function writer(DiviPageLoader $loader): DiviWriter
     {
         return new DiviWriter(