fix(gutenberg): 修复 MediaUpload 未定义与无效块分类

声明 MediaUpload、服务端注册 aksrt-blocks 分类、默认 apiVersion 3，避免编辑器脚本中断与 WP 6.9 弃用警告。

inc/core-hooks/part-3.php

@@ -104,6 +104,34 @@ add_action('pre_get_posts', function ($query) {
 // Gutenberg 自定义块注册
 // ============================================================
 
+// Register category server-side so it exists before JS registerBlockType runs.
+// Keep untyped + defensive: some plugins pass unexpected shapes; typed params can 500 the editor.
+add_filter('block_categories_all', static function ($categories, $context = null) {
+    if (!is_array($categories)) {
+        return $categories;
+    }
+
+    foreach ($categories as $category) {
+        $slug = '';
+        if (is_array($category)) {
+            $slug = (string) ($category['slug'] ?? '');
+        } elseif (is_object($category) && isset($category->slug)) {
+            $slug = (string) $category->slug;
+        }
+        if ($slug === 'aksrt-blocks') {
+            return $categories;
+        }
+    }
+
+    $categories[] = [
+        'slug'  => 'aksrt-blocks',
+        'title' => 'AKSRT',
+        'icon'  => null,
+    ];
+
+    return $categories;
+}, 10, 2);
+
 add_action('enqueue_block_editor_assets', function () {
     $base_uri = get_template_directory_uri();
     $version  = wp_get_theme()->get('Version');
@@ -113,7 +141,8 @@ add_action('enqueue_block_editor_assets', function () {
         wp_enqueue_script(
             'aksrt-gutenberg-blocks',
             $base_uri . '/assets/js/gutenberg-blocks.js',
-            ['wp-blocks', 'wp-element', 'wp-components', 'wp-block-editor', 'wp-hooks'],
+            // wp-media-utils: MediaUpload for carousel block
+            ['wp-blocks', 'wp-element', 'wp-components', 'wp-block-editor', 'wp-hooks', 'wp-media-utils'],
             (string) filemtime($blocks_js),
             true
         );