signinCalendar+apifix

Change-Id: I9c64341669a4eff45f871f1c7a19045049d4c376
diff --git a/src/main/java/com/example/g8backend/service/ISigningService.java b/src/main/java/com/example/g8backend/service/ISigningService.java
index e408e6c..08b1760 100644
--- a/src/main/java/com/example/g8backend/service/ISigningService.java
+++ b/src/main/java/com/example/g8backend/service/ISigningService.java
@@ -1,7 +1,12 @@
 package com.example.g8backend.service;
 
 import com.example.g8backend.dto.ApiResponse;
+import com.example.g8backend.entity.UserSignin;
+
+import java.time.LocalDate;
+import java.util.List;
 
 public interface ISigningService {
     boolean signIn(Long userId);
+    List<UserSignin> getSigninsByDateRange(Long userId, LocalDate startDate, LocalDate endDate);
 }
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