fix(admin): add wxOpenid to fuzzy search, enhance admin tab info

- Backend getUsers: add wxOpenid to  regex search
- Backend getAdmins: return gravity, plan, wxOpenid, email fields
- Frontend admin tab: show full user info (ID copy, email, gravity, plan)
- Frontend search result: show complete user details like user list rows

backend/src/modules/admin/admin.controller.ts

@@ -86,6 +86,7 @@ export class AdminController {
         { phone: { $regex: escaped, $options: 'i' } },
         { nickname: { $regex: escaped, $options: 'i' } },
         { email: { $regex: escaped, $options: 'i' } },
+        { wxOpenid: { $regex: escaped, $options: 'i' } },
       ]
       // 支持按 MongoDB _id 搜索（24位 hex）
       if (/^[0-9a-f]{24}$/i.test(keyword)) {
@@ -250,7 +251,7 @@ export class AdminController {
 
   @Get('admins')
   async getAdmins() {
-    const admins = await this.userModel.find({ role: 'admin' }).select('phone nickname email createdAt isSystemAdmin').lean().exec()
+    const admins = await this.userModel.find({ role: 'admin' }).select('phone nickname email wxOpenid gravity plan role createdAt isSystemAdmin').lean().exec()
     return { admins }
   }