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/backend/src/services/worker-platform/worker-platform-service.ts

@@ -468,6 +468,8 @@ export async function createWorkerRechargeRequest(
   }
 
   const note = String(payload.note || payload.remark || '').trim()
+  const proofFiles = normalizeProofFiles(payload.proofFiles || payload.proofFilesList)
+  const paidAt = String(payload.paidAt || '').trim()
   const created = await createWorkerFinanceRequest({
     workerId: worker.id,
     requestType: 'recharge',
@@ -480,6 +482,8 @@ export async function createWorkerRechargeRequest(
       source: 'worker_profile_recharge',
       username: worker.username,
       phone: worker.phone || '',
+      paidAt: paidAt || null,
+      proofFiles,
       financeConfig: {
         channelName: financeConfig.recharge.channelName,
         accountName: financeConfig.recharge.accountName,
@@ -2350,6 +2354,30 @@ function normalizeAmountFen(value: unknown, fallback: number): number {
   return Math.round(parsed * 100)
 }
 
+function normalizeProofFiles(value: unknown): Array<Record<string, unknown>> {
+  if (!Array.isArray(value)) return []
+  const files: Array<Record<string, unknown>> = []
+  for (const item of value) {
+    if (!item || typeof item !== 'object') continue
+    const file = item as Record<string, unknown>
+    const url = String(file.url || '').trim()
+    if (!url) continue
+    files.push({
+      url,
+      thumbnailUrl: String(file.thumbnailUrl || file.thumbnail_url || '').trim(),
+      mediumUrl: String(file.mediumUrl || file.medium_url || '').trim(),
+      objectKey: String(file.objectKey || file.object_key || '').trim(),
+      originalFilename: String(
+        file.originalFilename || file.original_filename || file.name || '',
+      ).trim(),
+      contentType: String(file.contentType || file.content_type || '').trim(),
+      sizeBytes: Number(file.sizeBytes || file.size_bytes || 0),
+    })
+    if (files.length >= 10) break
+  }
+  return files
+}
+
 function isIgnorableWorkerAuthError(error: unknown) {
   return IGNORABLE_WORKER_AUTH_ERROR_CODES.has(
     String((error as { errorCode?: string })?.errorCode || '').trim(),