fix(user-home): add reference tab loading skeletons

templates/parts/user-home/panel-follow.php

@@ -21,6 +21,17 @@ extract($args, EXTR_SKIP); // phpcs:ignore WordPress.PHP.DontExtract.extract_ext
 $follow_page = max(1, (int) ($follow_page ?? 1));
 $follow_sub  = in_array($follow_sub ?? 'followers', ['following', 'followers'], true) ? $follow_sub : 'followers';
 
+if (!empty($placeholder_only)) :
+	?>
+	<?php echo aksrt_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>
+	<div class="uh-panel-load-error" role="alert">
+		<span><?php esc_html_e('加载失败，请重试', 'aksrt'); ?></span>
+		<button type="button" data-uh-retry><?php esc_html_e('重试', 'aksrt'); ?></button>
+	</div>
+	<?php
+	return;
+endif;
+
 $follow_instance = class_exists('\AKSRT\User\Follow') ? \AKSRT\User\Follow::get_instance() : null;
 $following_count = $follow_instance ? (int) $follow_instance->get_following_count((int) $user_id) : 0;
 $follower_count  = $follow_instance ? (int) $follow_instance->get_follower_count((int) $user_id) : 0;
@@ -63,3 +74,4 @@ $total_pages = max(1, (int) ($list['total_pages'] ?? 1));
 	aksrt_render_profile_empty($svg_empty_follow ?? $svg_empty_post ?? '', $empty_msg);
 	?>
 <?php endif; ?>
+<?php echo aksrt_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>