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/DiviLogoUsage.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Integrations\Divi;
+
+use LIT\MCP\Integrations\Divi\Design\DesignSystemReader;
+use LIT\MCP\Integrations\Media\AttachmentFile;
+use LIT\MCP\Integrations\Media\ContentMediaReferences;
+use LIT\MCP\Integrations\Media\MediaUsageFinder;
+use LIT\MCP\Integrations\Media\MediaUsageSource;
+
+defined('ABSPATH') || exit;
+
+/**
+ * The logo in Divi's theme options as a usage of an attachment: "possible", because only the file URL is stored
+ * (it may belong to another copy of the file); none without a file or a logo.
+ */
+final class DiviLogoUsage implements MediaUsageSource
+{
+    public function usagesOf(int $attachmentId): array
+    {
+        $stem = AttachmentFile::stem($attachmentId);
+        $logo = DesignSystemReader::diviLogo();
+        if ($stem === '' || $logo === '') {
+            return [];
+        }
+
+        if (ContentMediaReferences::matches(ContentMediaReferences::fileRegex($stem), $logo) === false) {
+            return [];
+        }
+
+        return [MediaUsageFinder::siteUsage('Divi-Logo', 'option', 'divi_logo', MediaUsageFinder::POSSIBLE)];
+    }
+}