feat(admin): unify native admin pages on a shared modern UI

Add NativeUi helper + native-ui.css (tokens mirror the SPA Naive UI theme)
and move the pay center, orders, products, coupons, charge cards, income,
withdrawals, tickets, invite codes, VIP, verify, messages and report/ban
pages onto shared header, stat cards, cards, filters, badges and empty
states. Remove inline styles and dead helpers; split PayChargeCards into
sibling traits to stay under the file size limit.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/Admin/Native/UsersMenusTicketsDetail.php

@@ -93,7 +93,7 @@ trait UsersMenusTicketsDetail {
 
         $html .= '<section class="aksrt-ticket-detail__card">';
         $html .= '<h4 class="aksrt-ticket-detail__heading">' . esc_html__('内部备注', 'aksrt')
-            . ' <span class="aksrt-tickets-admin__muted">' . esc_html__('用户不可见', 'aksrt') . '</span></h4>';
+            . ' <span class="aksrt-native-muted">' . esc_html__('用户不可见', 'aksrt') . '</span></h4>';
         if ($notes === []) {
             $html .= '<p class="aksrt-ticket-detail__empty">' . esc_html__('暂无备注', 'aksrt') . '</p>';
         } else {
@@ -158,7 +158,7 @@ trait UsersMenusTicketsDetail {
             __('部门', 'aksrt') => esc_html((string) $ticket['ticket_type_name'] !== '' ? (string) $ticket['ticket_type_name'] : '—'),
             __('跟进人', 'aksrt') => (int) $ticket['admin_id'] > 0
                 ? esc_html((string) $ticket['admin_name'])
-                : '<span class="aksrt-tickets-admin__muted">' . esc_html__('未指派', 'aksrt') . '</span>',
+                : '<span class="aksrt-native-muted">' . esc_html__('未指派', 'aksrt') . '</span>',
         ];
         if ((string) $ticket['order_number'] !== '') {
             $rows[__('关联订单', 'aksrt')] = '<code>' . esc_html((string) $ticket['order_number']) . '</code>';
@@ -170,7 +170,7 @@ trait UsersMenusTicketsDetail {
                 /* translators: %d urge count */
                 __('%d 次', 'aksrt'),
                 (int) $ticket['urge_count']
-            )) . '</span> <span class="aksrt-tickets-admin__muted">' . esc_html(sprintf(
+            )) . '</span> <span class="aksrt-native-muted">' . esc_html(sprintf(
                 /* translators: %s last urge time */
                 __('最近 %s', 'aksrt'),
                 (string) $ticket['last_urge_time']
@@ -268,7 +268,7 @@ trait UsersMenusTicketsDetail {
         return '<header class="aksrt-ticket-detail__msg-head">'
             . ($avatar !== '' ? '<img src="' . esc_url($avatar) . '" alt="" width="32" height="32" />' : '')
             . '<strong>' . esc_html($name !== '' ? $name : '#' . $user_id) . '</strong>'
-            . '<span class="aksrt-tickets-admin__muted">' . esc_html($role) . '</span>'
+            . '<span class="aksrt-native-muted">' . esc_html($role) . '</span>'
             . '<time>' . esc_html($time) . '</time></header>';
     }