充值申请增加付款凭证与付款时间，管理端可核对后审核

- 打手端充值表单新增付款时间（必填）与付款凭证上传（最多5张）
- 后端存储 paidAt 与 proofFiles 归一化数据
- 管理端资金申请列表新增付款凭证缩略图列，审核弹窗展示付款时间与凭证预览

apps/frontend/src/services/worker.ts

@@ -62,6 +62,8 @@ export function fetchWorkerFinanceRequests(params?: Record<string, unknown>) {
 export function createWorkerRechargeRequest(payload: {
   amount?: number
   note?: string
+  paidAt?: string
+  proofFiles?: UploadedFile[]
 }) {
   return apiPost<{ request: WorkerFinanceRequest }>(
     '/api/v1/worker/profile/recharge-requests',