feat(admin): quick-edit paid post settings in a dialog on the pay products page

- Rebuild aksrt_pay_products as list + in-page quick settings dialog
  (pay type, limit, cash/points prices, sales float, coupon, order expiry, copy)
- Query by _aksrt_pay_type with real pagination; drop order-summary fallback
  and the duplicate "Meta 销量" column
- Centralize pay meta writes in DomainModel::persist_pay_meta(); stop writing
  unread _aksrt_pay_modo / _aksrt_pay_limit keys

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

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

@@ -40,7 +40,7 @@ const chargeCards = [
 ].map(read).join('\n');
 const pages = {
   orders: ['PayOrders', 'PayOrdersList', 'PayOrdersDetail'].map((f) => read(`src/Admin/Native/${f}.php`)).join('\n'),
-  products: read('src/Admin/Native/PayProducts.php'),
+  products: ['PayProducts', 'PayProductsList', 'PayProductsEditor'].map((f) => read(`src/Admin/Native/${f}.php`)).join('\n'),
   coupons: read('src/Admin/Native/PayCoupons.php'),
   income: read('src/Admin/Native/PayIncome.php'),
   withdrawals: read('src/Admin/Native/PayWithdrawals.php'),