接入 ESLint 并清理未使用代码

- 前后端接入 ESLint 10 扁平配置（typescript-eslint 类型感知检查 + react-hooks/react-refresh），新增 lint / lint:check / lint:fix 脚本并纳入 check 链路
- 清理全部 no-unused-vars 与 no-useless-assignment 警告，修复 floating promises、正则转义等问题
- 删除确认无引用的死代码（markKuaishouCloudBindUrlRefreshFailed、未使用 helper 等）

apps/frontend/src/pages/admin/panels/shared.tsx

@@ -1,8 +1,7 @@
 import { Descriptions, Space, Tag, Typography } from 'antd'
 import ImagePreviewList from '@/components/files/ImagePreviewList'
 import { DeadlineCountdown, formatTimeoutPolicyLabel } from '@/components/DeadlineCountdown'
-import type { CollectField, UploadedFile, WorkOrder, WorkOrderShare } from '@/types/worker-platform'
-import { formatAdminDateTime } from '@/utils/admin-time'
+import type { CollectField, UploadedFile, WorkOrder } from '@/types/worker-platform'
 
 export { DeadlineCountdown, formatTimeoutPolicyLabel }