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/charge-cards-form-constraints.test.cjs

@@ -35,7 +35,15 @@ const path = require('node:path');
 const test = require('node:test');
 
 const root = path.resolve(__dirname, '..', '..');
-const page = fs.readFileSync(path.join(root, 'src/Admin/Native/PayChargeCards.php'), 'utf8');
+
+// PayChargeCards 拆成 flat sibling traits；按原有相邻顺序拼接壳类与 trait 后再扫描/切片。
+const read = (rel) => fs.readFileSync(path.join(root, rel), 'utf8');
+const page = [
+  'src/Admin/Native/PayChargeCards.php',
+  'src/Admin/Native/PayChargeCardsList.php',
+  'src/Admin/Native/PayChargeCardsAssets.php',
+  'src/Admin/Native/PayChargeCardsForms.php',
+].map(read).join('\n');
 
 /**
  * 去掉 PHP 注释后的源码（字符串字面量原样保留）。