fix(test): 更新集成测试以匹配新的筛选参数签名

   更新 usage_log_repo_integration_test.go 中的测试用例，
   使其与 GetUsageTrendWithFilters 和 GetModelStatsWithFilters
   方法的新签名保持一致。

backend/internal/repository/usage_log_repo_integration_test.go

@@ -872,17 +872,17 @@ func (s *UsageLogRepoSuite) TestGetUsageTrendWithFilters() {
 	endTime := base.Add(48 * time.Hour)
 
 	// Test with user filter
-	trend, err := s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", user.ID, 0)
+	trend, err := s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", user.ID, 0, 0, 0, "", nil)
 	s.Require().NoError(err, "GetUsageTrendWithFilters user filter")
 	s.Require().Len(trend, 2)
 
 	// Test with apiKey filter
-	trend, err = s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", 0, apiKey.ID)
+	trend, err = s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", 0, apiKey.ID, 0, 0, "", nil)
 	s.Require().NoError(err, "GetUsageTrendWithFilters apiKey filter")
 	s.Require().Len(trend, 2)
 
 	// Test with both filters
-	trend, err = s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", user.ID, apiKey.ID)
+	trend, err = s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "day", user.ID, apiKey.ID, 0, 0, "", nil)
 	s.Require().NoError(err, "GetUsageTrendWithFilters both filters")
 	s.Require().Len(trend, 2)
 }
@@ -899,7 +899,7 @@ func (s *UsageLogRepoSuite) TestGetUsageTrendWithFilters_HourlyGranularity() {
 	startTime := base.Add(-1 * time.Hour)
 	endTime := base.Add(3 * time.Hour)
 
-	trend, err := s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "hour", user.ID, 0)
+	trend, err := s.repo.GetUsageTrendWithFilters(s.ctx, startTime, endTime, "hour", user.ID, 0, 0, 0, "", nil)
 	s.Require().NoError(err, "GetUsageTrendWithFilters hourly")
 	s.Require().Len(trend, 2)
 }
@@ -945,17 +945,17 @@ func (s *UsageLogRepoSuite) TestGetModelStatsWithFilters() {
 	endTime := base.Add(2 * time.Hour)
 
 	// Test with user filter
-	stats, err := s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, user.ID, 0, 0)
+	stats, err := s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, user.ID, 0, 0, 0, nil)
 	s.Require().NoError(err, "GetModelStatsWithFilters user filter")
 	s.Require().Len(stats, 2)
 
 	// Test with apiKey filter
-	stats, err = s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, 0, apiKey.ID, 0)
+	stats, err = s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, 0, apiKey.ID, 0, 0, nil)
 	s.Require().NoError(err, "GetModelStatsWithFilters apiKey filter")
 	s.Require().Len(stats, 2)
 
 	// Test with account filter
-	stats, err = s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, 0, 0, account.ID)
+	stats, err = s.repo.GetModelStatsWithFilters(s.ctx, startTime, endTime, 0, 0, account.ID, 0, nil)
 	s.Require().NoError(err, "GetModelStatsWithFilters account filter")
 	s.Require().Len(stats, 2)
 }