feat(ticket): redesign native ticket admin page UI/UX

- Fix empty status/department selects in the detail panel (printf leak)
- Replace dead 代客提交 button with a working collapsible create form
- Error-aware notices; redirect keeps filters and the open ticket
- Status views with counts, incl. 未关闭 default and 已关闭 view
- Two-column detail: conversation + attachments + prereplies | info,
  status/department/assignee select, internal notes; closed = read-only
- Split detail panel into UsersMenusTicketsDetail trait; page-scoped
  tickets.css / admin-tickets.js replace inline styles
- AdminListPagination accepts parent file so users.php keeps menu highlight
- Drop native loading="lazy" per lazyload contract

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

tests/widget-system/ticket-native-admin-contract.test.cjs

@@ -42,16 +42,21 @@ test('write actions are nonce-protected and dispatched by action name', () => {
     assert.ok(center.includes(`case '${action}':`), `dispatch case ${action} missing`);
   }
 
-  // nonce 以 action + id 为单位，行内表单各自带自己的 nonce（渲染在 List trait 中）。
+  // nonce 以 action + id 为单位，行内表单各自带自己的 nonce：
+  // 代客提交在 List trait，回复 / 状态 / 备注在 Detail trait。
   // 删除类操作已迁至 SPA（n-dialog 二次确认），本页不再有 onsubmit=confirm 的小表单。
   const list = read('src/Admin/Native/UsersMenusTicketsList.php');
+  const detail = read('src/Admin/Native/UsersMenusTicketsDetail.php');
+  assert.ok(list.includes("wp_nonce_field('aksrt_ticket_create_0')"), 'create nonce missing');
   for (const hook of [
     'aksrt_ticket_reply_',
     'aksrt_ticket_status_',
     'aksrt_ticket_note_',
   ]) {
-    assert.ok(list.includes(hook), `nonce prefix ${hook} missing`);
+    assert.ok(detail.includes(hook), `nonce prefix ${hook} missing`);
   }
+  assert.ok(center.includes('use UsersMenusTicketsDetail;'), 'detail trait not composed');
+  assert.ok(!detail.includes('ticket_tab'), 'ticket_tab hidden input must be gone');
   // Tab 已移除，三个行内表单不再输出 ticket_tab 隐藏域。
   assert.ok(!list.includes('ticket_tab'), 'ticket_tab hidden input must be gone');
   assert.ok(!center.includes('onsubmit="return confirm('), 'config delete forms must be gone');
@@ -97,8 +102,11 @@ test('the ticket list paginates through the shared helper', () => {
 });
 
 test('detail panel renders replies, quote blocks and internal notes', () => {
-  const list = read('src/Admin/Native/UsersMenusTicketsList.php');
-  const body = list.slice(list.indexOf('private function render_ticket_detail_panel'));
+  const detail = read('src/Admin/Native/UsersMenusTicketsDetail.php');
+  const body = detail.slice(detail.indexOf('private function render_ticket_detail_panel'));
+  assert.ok(detail.includes('private function render_ticket_detail_panel'), 'detail renderer missing');
+  // 选项必须拼进返回值而不是直接 echo（历史 bug：printf 导致下拉框为空）。
+  assert.ok(!/\bprintf\(/.test(detail), 'detail panel must not echo via printf');
 
   assert.match(body, /TicketNoteService::for_ticket/);
   assert.match(body, /repo->replies\(\$id\)/);