refactor(tickets): 删除工单处理功能及相关导航入口

- 从控制台导航中移除工单管理菜单项
- 从开发者导航中移除工单处理菜单项
- 完全删除工单处理页面及其代码实现
- 移除所有与工单列表、详情、回复和分配相关的UI组件和逻辑
- 清理工单处理相关的样式和API调用代码

app/config/console-nav.ts

@@ -85,13 +85,6 @@ export const consoleNav: ConsoleNavEntry[] = [
       { key: 'console-contracts', label: '合同管理', icon: ProfileOutlined, to: '/console/contracts' },
     ],
   },
-  {
-    key: 'console-tickets',
-    label: '工单管理',
-    icon: CustomerServiceOutlined,
-    badge: 'NEW',
-    to: '/console/tickets',
-  },
   {
     key: 'console-notifications',
     label: '消息通知',