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/pages/admin/AdminWorkerPlatformPage.tsx

@@ -1617,6 +1617,16 @@ function FinancePanel() {
       minWidth: 240,
       render: (_, row) => renderFinanceRequestAccount(row),
     },
+    {
+      title: '付款凭证',
+      minWidth: 140,
+      render: (_, row) =>
+        row.requestType === 'recharge' ? (
+          <ImagePreviewList files={getRechargeProofs(row)} size={48} />
+        ) : (
+          '-'
+        ),
+    },
     {
       title: '备注',
       minWidth: 260,
@@ -1851,6 +1861,18 @@ function FinancePanel() {
               <Descriptions.Item label="收款信息">
                 {renderFinanceRequestAccountText(reviewState.request)}
               </Descriptions.Item>
+              {reviewState.request.requestType === 'recharge' ? (
+                <>
+                  <Descriptions.Item label="付款时间">
+                    {getRechargePaidAt(reviewState.request)
+                      ? formatAdminDateTime(getRechargePaidAt(reviewState.request))
+                      : '-'}
+                  </Descriptions.Item>
+                  <Descriptions.Item label="付款凭证">
+                    <ImagePreviewList files={getRechargeProofs(reviewState.request)} size={88} />
+                  </Descriptions.Item>
+                </>
+              ) : null}
               <Descriptions.Item label="申请备注">
                 {reviewState.request.note || '-'}
               </Descriptions.Item>
@@ -2370,6 +2392,29 @@ function getRechargeSnapshot(request: WorkerFinanceRequest) {
   }
 }
 
+function getRechargeProofs(request: WorkerFinanceRequest): UploadedFile[] {
+  if (request.requestType !== 'recharge') return []
+  const payload = asRecord(request.payload)
+  const rawFiles = Array.isArray(payload.proofFiles) ? payload.proofFiles : []
+  return rawFiles
+    .map((item) => {
+      const file = asRecord(item)
+      const url = String(file.url || '').trim()
+      if (!url) return null
+      return {
+        url,
+        mediumUrl: String(file.mediumUrl || '').trim(),
+        thumbnailUrl: String(file.thumbnailUrl || '').trim(),
+      } as UploadedFile
+    })
+    .filter((item): item is UploadedFile => Boolean(item))
+}
+
+function getRechargePaidAt(request: WorkerFinanceRequest): string {
+  const payload = asRecord(request.payload)
+  return String(payload.paidAt || '').trim()
+}
+
 function formatFinanceChannel(channel: string) {
   if (channel === 'alipay') return '支付宝'
   if (channel === 'wechat') return '微信收款'