feat(admin): redesign withdrawal review page and drop dead withdrawal code

- Split PayWithdrawals into shell + PayWithdrawalsList flat sibling trait
- Add process/policy callout, open/paid/fee stats, status views with counts
- Filter by source and payout method; reset keeps the status view
- Show net payout with gross/fee breakdown, copyable payee, note column
- Replace inline select form with per-row actions and a confirm dialog;
  reject requires a reason; double-submit guard; retry reuses the
  idempotency key; redirect back preserving filters and paging
- Withdrawal: add get_status_counts() and method filter; get_stats() now
  returns open_gross / paid_net / paid_fee
- Remove unused REST routes (/payment/withdrawals, /transition),
  admin_withdrawals(), update_status(), has_open_withdrawal(),
  count_open(), resolve_gross_amount()

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

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

@@ -43,7 +43,7 @@ const pages = {
   products: ['PayProducts', 'PayProductsList', 'PayProductsEditor'].map((f) => read(`src/Admin/Native/${f}.php`)).join('\n'),
   coupons: read('src/Admin/Native/PayCoupons.php'),
   income: ['PayIncome', 'PayIncomeList'].map((f) => read(`src/Admin/Native/${f}.php`)).join('\n'),
-  withdrawals: read('src/Admin/Native/PayWithdrawals.php'),
+  withdrawals: ['PayWithdrawals', 'PayWithdrawalsList'].map((f) => read(`src/Admin/Native/${f}.php`)).join('\n'),
   chargeCards,
 };
 
@@ -143,10 +143,17 @@ test('每页都在查询前夹取页码，越界时重查一次', () => {
     '创作分成必须在查询列表前完成计数与页码夹取'
   );
 
+  // 提现审核同样先按状态计数夹取页码，再只查一次列表。
+  assert.equal(count(pages.withdrawals, /\$svc->get_all\(/g), 1, '提现审核只应查询一次列表');
+  assert.ok(
+    pages.withdrawals.indexOf('get_status_counts(') < pages.withdrawals.indexOf('if ($page_num > $pages) {')
+      && pages.withdrawals.indexOf('if ($page_num > $pages) {') < pages.withdrawals.indexOf('$svc->get_all('),
+    '提现审核必须在查询列表前完成计数与页码夹取'
+  );
+
   const requeries = {
     products: [/\$query\s*=\s*\$this->query_paid_posts\(/g],
     coupons: [/\$svc->get_list\(/g],
-    withdrawals: [/\$svc->get_all\(/g],
     chargeCards: [/\$svc->get_list\(/g],
   };