f and add

internal/infrastructure/database/repositories/certification/gorm_enterprise_info_submit_record_repository.go

@@ -73,6 +73,23 @@ func (r *GormEnterpriseInfoSubmitRecordRepository) FindLatestVerifiedByUserID(ct
 	return &record, nil
 }
 
+// ExistsByUnifiedSocialCodeExcludeUser 检查该统一社会信用代码是否已被其他用户占用（已提交或已通过验证的记录）
+func (r *GormEnterpriseInfoSubmitRecordRepository) ExistsByUnifiedSocialCodeExcludeUser(ctx context.Context, unifiedSocialCode string, excludeUserID string) (bool, error) {
+	if unifiedSocialCode == "" {
+		return false, nil
+	}
+	var count int64
+	query := r.GetDB(ctx).Model(&entities.EnterpriseInfoSubmitRecord{}).
+		Where("unified_social_code = ? AND status IN (?, ?)", unifiedSocialCode, "submitted", "verified")
+	if excludeUserID != "" {
+		query = query.Where("user_id != ?", excludeUserID)
+	}
+	if err := query.Count(&count).Error; err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
 func (r *GormEnterpriseInfoSubmitRecordRepository) List(ctx context.Context, filter repositories.ListSubmitRecordsFilter) (*repositories.ListSubmitRecordsResult, error) {
 	db := r.GetDB(ctx).Model(&entities.EnterpriseInfoSubmitRecord{})
 	if filter.ManualReviewStatus != "" {