feat: DiviCompatibility checks the TB cache function, divi/global-layout and the library term taxonomies (M-6)

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

src/Integrations/Divi/DiviCompatibility.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace LIT\MCP\Integrations\Divi;
 
+use LIT\MCP\Integrations\Divi\BlockTree\GlobalInstance;
 use LIT\MCP\Integrations\Divi\Library\DiviLibraryStore;
 use LIT\MCP\Integrations\Divi\Pages\DynamicContentMap;
 use LIT\MCP\Integrations\Divi\Schema\DiviModules;
@@ -13,8 +14,9 @@ defined('ABSPATH') || exit;
 
 /**
  * Live check of the Divi internals LIT MCP relies on (decisions note §5, E15): classes,
- * functions, the library post type and taxonomies. lit-site-status shows the failed checks, so a
+ * functions, the library post type and taxonomies, the instance block type. lit-site-status shows
- * Divi update that moves one of them is visible before a tool reports "unsupported".
+ * the failed checks, so a Divi update that moves one of them is visible before a tool reports
+ * "unsupported".
  */
 final class DiviCompatibility
 {
@@ -56,6 +58,40 @@ final class DiviCompatibility
             'GlobalLayout::is_global_layout_template (globale Module)' =>
                 static fn (): bool => method_exists(DiviLibraryStore::GLOBAL_LAYOUT, 'is_global_layout_template'),
             'ET_Core_PageResource (CSS-Cache)' => static fn (): bool => class_exists('ET_Core_PageResource'),
+            'et_theme_builder_clear_wp_cache (Theme-Builder-Cache)' =>
+                static fn (): bool => function_exists('et_theme_builder_clear_wp_cache'),
+            'Block-Typ divi/global-layout (Instanzen globaler Module)' =>
+                static fn (): bool => self::knowsGlobalLayout(),
+            'Taxonomien layout_category, layout_tag (Bibliothek)' =>
+                static fn (): bool => taxonomy_exists('layout_category') && taxonomy_exists('layout_tag'),
         ];
     }
+
+    /**
+     * Whether Divi still has the block type of global instances (GlobalInstance::BLOCK): registered
+     * with WordPress, or in Divi's core module metadata (Divi renders instances itself, BlockParser,
+     * and does not always register the type with WordPress).
+     */
+    private static function knowsGlobalLayout(): bool
+    {
+        if (
+            class_exists('WP_Block_Type_Registry')
+            && \WP_Block_Type_Registry::get_instance()->is_registered(GlobalInstance::BLOCK)
+        ) {
+            return true;
+        }
+
+        $registration = 'ET\Builder\Packages\ModuleLibrary\ModuleRegistration';
+        if (! method_exists($registration, 'get_all_core_modules_metadata')) {
+            return false;
+        }
+
+        foreach ((array) $registration::get_all_core_modules_metadata() as $module) {
+            if (is_array($module) && ($module['name'] ?? null) === GlobalInstance::BLOCK) {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }

tests/Unit/Integrations/Divi/DiviCompatibilityTest.php

@@ -34,6 +34,9 @@ final class DiviCompatibilityTest extends TestCase
                 'Taxonomien scope, layout_type, module_width (Bibliothek)',
                 'GlobalLayout::is_global_layout_template (globale Module)',
                 'ET_Core_PageResource (CSS-Cache)',
+                'et_theme_builder_clear_wp_cache (Theme-Builder-Cache)',
+                'Block-Typ divi/global-layout (Instanzen globaler Module)',
+                'Taxonomien layout_category, layout_tag (Bibliothek)',
             ],
             array_keys(DiviCompatibility::defaults())
         );