feat(user): complete growth level chain

inc/helpers/aksrt-user-center.php

@@ -141,6 +141,7 @@ if (!function_exists('aksrt_capture_user_center_view')) {
 	function aksrt_capture_user_center_view(string $view, array $context): string {
 		// Built-in panels map to renderer files; "profile" content lives in profile-form.php.
 		$map = [
+			'level'          => 'level',
 			'profile'        => 'form',
 			'posts'          => 'posts',
 			'comments'       => 'comments',
@@ -173,7 +174,7 @@ if (!function_exists('aksrt_capture_user_center_panel')) {
 	 * Capture a built-in or registered user-center panel body.
 	 */
 	function aksrt_capture_user_center_panel(string $tab_key, array $tab, array $context): string {
-		$built_in_tabs = ['profile', 'posts', 'comments', 'favorites', 'credits', 'vip', 'orders', 'auth', 'settings'];
+		$built_in_tabs = ['profile', 'level', 'posts', 'comments', 'favorites', 'credits', 'vip', 'orders', 'auth', 'settings'];
 		if (in_array($tab_key, $built_in_tabs, true)) {
 			return aksrt_capture_user_center_view($tab_key, $context);
 		}