fix: improve promotion tabs and referral layout

inc/helpers/user-center-renderers/sidebar-creator.php

@@ -8,8 +8,9 @@
 defined('ABSPATH') || exit;
 
 $creation_url = isset($dashboard_tabs['creator']) ? aksrt_get_user_center_tab_url('creator') : '';
+$revenue_url = isset($dashboard_tabs['revenue']) ? aksrt_get_user_center_tab_url('revenue') : '';
 
-if ($creation_url === '') {
+if ($creation_url === '' && $revenue_url === '') {
 	return;
 }
 ?>
@@ -21,4 +22,11 @@ if ($creation_url === '') {
 			<i class="fas fa-angle-right" aria-hidden="true"></i>
 		</a>
 	<?php endif; ?>
+	<?php if ($revenue_url !== '') : ?>
+		<a class="uc-center-card uc-center-card--revenue" href="<?php echo esc_url($revenue_url); ?>" data-tab="revenue">
+			<span class="uc-center-card__icon"><i class="fas fa-chart-line" aria-hidden="true"></i></span>
+			<span><strong><?php esc_html_e('推广收益', 'aksrt'); ?></strong><small><?php esc_html_e('推广佣金明细', 'aksrt'); ?></small></span>
+			<i class="fas fa-angle-right" aria-hidden="true"></i>
+		</a>
+	<?php endif; ?>
 </div>