feat(user): 添加签到接口缓存逻辑避免频繁查询

- 新增用户签到分数缓存键值设置
- 实现签到接口缓存命中时直接返回默认数据
- 添加剩余秒数计算用于缓存过期时间设置
- 在缓存未命中时执行原有签到逻辑查询

app/controller/api/user/User.php

@@ -3323,6 +3323,20 @@ class User extends BaseController
     public function new_sign_info()
     {
         $uid = $this->request->uid();
+        $key = 'user_sign_score_' . $uid;
+        if (Cache::get($key)) {
+            $data = [
+                'today' => 0,
+                'day'   => 0
+            ];
+            return app('json')->success($data);
+        }
+
+        $now = time();
+        $todayEnd = strtotime('today 23:59:59');
+        $remainingSeconds = $todayEnd - $now;
+        Cache::set($key, 1, $remainingSeconds);
+
         // 查询今天是否已经签到
         $today_signin_info = Db::name('user_sign_score')->where(array('uid' => $uid))->whereDay('signin_time')->find();
         // 查询昨天是否已经签到了