feat(vip): Batch 3 dedicated user-center VIP tab

Register 我的会员 panel, zibll-style status/equity cards, sidebar deep-link,
and slim credits-tab entry so VIP is no longer nested only under assets.

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

@@ -59,7 +59,7 @@ if (empty($orders_url) && empty($show_vip) && empty($show_credit_tabs) && empty(
 			</a>
 		<?php endif; ?>
 		<?php if (!empty($show_vip)) : ?>
-			<a class="uc-sidebar__btn<?php echo (!empty($active_tab) && $active_tab === 'credits') ? ' is-active' : ''; ?>" href="<?php echo esc_url(aksrt_get_user_center_tab_url('credits')); ?>" data-tab="credits">
+			<a class="uc-sidebar__btn payvip-icon<?php echo (!empty($active_tab) && $active_tab === 'vip') ? ' is-active' : ''; ?>" href="<?php echo esc_url(aksrt_get_user_center_tab_url('vip')); ?>" data-tab="vip">
 				<i class="fas fa-crown" aria-hidden="true"></i>
 				<span><?php esc_html_e('VIP 会员', 'aksrt'); ?></span>
 			</a>