refactor(auth): 优化刷新令牌的响应格式

- 引入 useResponseSuccess 函数以统一响应格式
- 修改返回值为包含 accessToken 的对象
- 删除多余的空行

apps/backend-mock/api/auth/refresh.post.ts

@@ -6,7 +6,7 @@ import {
 } from '~/utils/cookie-utils';
 import { generateAccessToken, verifyRefreshToken } from '~/utils/jwt-utils';
 import { MOCK_USERS } from '~/utils/mock-data';
-import { forbiddenResponse } from '~/utils/response';
+import { forbiddenResponse, useResponseSuccess } from '~/utils/response';
 
 export default defineEventHandler(async (event) => {
   const refreshToken = getRefreshTokenFromCookie(event);
@@ -30,6 +30,7 @@ export default defineEventHandler(async (event) => {
   const accessToken = generateAccessToken(findUser);
 
   setRefreshTokenCookie(event, refreshToken);
-
-  return accessToken;
+  return useResponseSuccess({
+    accessToken,
+  });
 });