feat(widgets): category recommend/tabs residual + batch22-24 CSS

Use graphic_card heroes and mini post strips for category recommend,
prefer shared mini list in category block sidebar fallback, admin empty
for product tabs, and forum/user residual styles.

src/AKSRT/Widgets/WidgetProductTab.php

@@ -49,6 +49,13 @@ class WidgetProductTab extends \WP_Widget {
 		$paginate  = sanitize_key((string) ($instance['paginate'] ?? 'ajax'));
 		$tabs      = self::parse_tabs($tabs_raw);
 		if (!$tabs) {
+			if (current_user_can('manage_options')) {
+				echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+				echo function_exists('aksrt_get_widget_null')
+					? aksrt_get_widget_null(__('请至少配置一个 TAB', 'aksrt')) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+					: '<p class="widget-empty">' . esc_html__('请至少配置一个 TAB', 'aksrt') . '</p>';
+				echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+			}
 			return;
 		}