feat: 微信登录获取用户信息，客户列表按最后登录排序

src/main/java/com/example/building/controller/AuthController.java

@@ -38,10 +38,16 @@ public class AuthController {
 
     /**
      * 微信登录
+     * @param code 微信授权码
+     * @param nickname 微信昵称（可选）
+     * @param avatar 微信头像URL（可选）
      */
     @PostMapping("/wechat")
-    public Result<Map<String, Object>> wechatLogin(@RequestParam String code) {
-        Map<String, Object> result = authService.wechatLogin(code);
+    public Result<Map<String, Object>> wechatLogin(
+            @RequestParam String code,
+            @RequestParam(required = false) String nickname,
+            @RequestParam(required = false) String avatar) {
+        Map<String, Object> result = authService.wechatLogin(code, nickname, avatar);
         return Result.success(result);
     }