refactor: Kern ohne Divi – Ports BuilderDetector, MediaUsageSource, EnvironmentComponent und ausgeschlossene Post-Typen im ContentSchema; Divi-Implementierungen und Verdrahtung über DiviIntegration/Plugin; CoreIndependenceTest

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

src/Integrations/Divi/DiviBuilderDetector.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Integrations\Divi;
+
+use LIT\MCP\Integrations\Divi\Pages\DiviPages;
+use LIT\MCP\Integrations\Divi\Schema\DiviModules;
+use LIT\MCP\Integrations\WordPress\BuilderDetector;
+
+defined('ABSPATH') || exit;
+
+/** The BuilderDetector for Divi 5: tools exist while Divi 5 is loaded, a layout carries Divi's builder flag. */
+final class DiviBuilderDetector implements BuilderDetector
+{
+    public function isAvailable(): bool
+    {
+        return DiviModules::isAvailable();
+    }
+
+    public function usesBuilder(int $postId): bool
+    {
+        return DiviPages::usesBuilder($postId);
+    }
+}