CSSの最適化や内部挙動の改良

internal/service/assignment_service.go

@@ -378,6 +378,10 @@ func (s *AssignmentService) GetStatistics(userID uint, filter StatisticsFilter)
 	return summary, nil
 }
 
+func (s *AssignmentService) GetForExport(userID uint, from, to *time.Time, subject string) ([]models.Assignment, error) {
+	return s.assignmentRepo.FindForExport(userID, from, to, subject)
+}
+
 func (s *AssignmentService) ArchiveSubject(userID uint, subject string) error {
 	return s.assignmentRepo.ArchiveBySubject(userID, subject)
 }

internal/service/recurring_assignment_service.go

@@ -413,11 +413,6 @@ func (s *RecurringAssignmentService) generateNextIfPending(recurring *models.Rec
 		return nil
 	}
 
-	pendingCount, err := s.recurringRepo.CountPendingByRecurringID(recurring.ID)
-	if err != nil || pendingCount > 0 {
-		return err
-	}
-
 	latest, err := s.recurringRepo.GetLatestAssignmentByRecurringID(recurring.ID)
 	if err != nil {
 		return err
@@ -426,6 +421,10 @@ func (s *RecurringAssignmentService) generateNextIfPending(recurring *models.Rec
 		return nil
 	}
 
+	if !latest.IsCompleted && !latest.IsOverdue() {
+		return nil
+	}
+
 	nextDueDate := recurring.CalculateNextDueDate(latest.DueDate)
 
 	if recurring.GenerationLeadDays > 0 {