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>

tests/admin/pay-pages-pagination.test.cjs

@@ -30,13 +30,21 @@ const root = path.resolve(__dirname, '..', '..');
 const read = (rel) => fs.readFileSync(path.join(root, rel), 'utf8');
 
 const helper = read('src/Admin/Native/AdminListPagination.php');
+// 卡密管理已拆成 flat sibling traits；分页相关逻辑现落在 List trait 内，故把壳类与三个
+// trait 拼接后再做契约断言（顺序：壳类 → List → Assets → Forms）。
+const chargeCards = [
+  'src/Admin/Native/PayChargeCards.php',
+  'src/Admin/Native/PayChargeCardsList.php',
+  'src/Admin/Native/PayChargeCardsAssets.php',
+  'src/Admin/Native/PayChargeCardsForms.php',
+].map(read).join('\n');
 const pages = {
   orders: read('src/Admin/Native/PayOrders.php'),
   products: read('src/Admin/Native/PayProducts.php'),
   coupons: read('src/Admin/Native/PayCoupons.php'),
   income: read('src/Admin/Native/PayIncome.php'),
   withdrawals: read('src/Admin/Native/PayWithdrawals.php'),
-  chargeCards: read('src/Admin/Native/PayChargeCards.php'),
+  chargeCards,
 };
 
 const labels = {