fix(data): 切换成员时补充 id 字段并修复 userId 类型问题

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

miniprogram/components/selectMemberDrawer/selectMemberDrawer.ts

@@ -15,6 +15,7 @@ interface AddMemberApiItem {
 
 /** GET /weighingScale/v3/select/history/user 返回的单条结构 */
 interface HistoryApiItem {
+  id: string
   userId: string
   realname: string
   sex: number
@@ -123,7 +124,7 @@ Component({
         get<HistoryApiItem[]>('weighingScale/v3/select/history/user', params, { loading: false })
           .then((res: any) => {
             const members: ExistingMember[] = (res.result ?? []).map((item: HistoryApiItem) => ({
-              id: item.userId,
+              id: item.id,
               name: item.realname,
               gender: item.sex === 1 ? '男' : '女',
               age: this._calcAge(item.birthday),