资料字段支持下拉选项与买家截图，大厅按 VIP 等级延迟可见

资料字段：
- CollectField 支持 type(text/select) 与 options，规则字段语法 key:名称#选项1,选项2
- 默认字段改为游戏编号/游戏昵称/系统(安卓,苹果)/区服(QQ区,微信区)，旧默认模板字段自动替换为新版
- 采集页与管理端补资料支持单选下拉与买家主页截图上传（新增公开上传接口）
- 管理端工单详情展示买家截图

VIP 延迟可见：
- 等级权限新增 visibleDelaySeconds（默认 VIP1=20s~VIP5=0s，可后台配置）
- 大厅按等级延迟过滤新发布工单，页面提示延迟规则

apps/backend/src/routes/collect.ts

@@ -5,7 +5,9 @@ import {
   collectLookupWorkOrder,
   collectSubmitWorkOrder,
 } from '../services/worker-platform/index.js'
+import { uploadFileAsset } from '../services/file-storage/file-storage-service.js'
 import { buildNotFoundPayload, createRouteHandler } from '../utils/http.js'
+import { uploadSingleFile } from './file-upload.js'
 
 const router = Router()
 
@@ -36,6 +38,24 @@ router.post(
   }),
 )
 
+router.post(
+  '/upload',
+  collectRateLimit,
+  uploadSingleFile,
+  createRouteHandler((req) => {
+    return uploadFileAsset({
+      file: req.file,
+      scene: req.body?.scene || 'collect-material',
+      uploaderType: 'collect',
+      uploaderId: String(req.body?.orderNo || 'anonymous'),
+    })
+  }, {
+    successMessage: '文件已上传',
+    errorMessage: '文件上传失败',
+    scope: '[collect/upload]',
+  }),
+)
+
 router.use((req, res) => {
   res.status(404).json(buildNotFoundPayload(req))
 })