chore: consolidate local integration changes

backend/internal/service/user_group_service.go

@@ -222,44 +222,19 @@ func (s *userGroupService) AddMember(ctx context.Context, groupID, userID string
 		tenant, _ = s.tenantRepo.FindByID(ctx, group.TenantID)
 	}
 
-	var updatedIdentity *KratosIdentity
-
-	// [Fix] Sync Kratos Traits & Local DB when a user is added to an organization
-	if s.kratos != nil && tenant != nil {
-		// Fetch Kratos Identity
-		identity, err := s.kratos.GetIdentity(ctx, userID)
-		if err == nil && identity != nil {
-			traits := identity.Traits
-			if traits == nil {
-				traits = make(map[string]any)
-			}
-			delete(traits, "companyCode")
-			delete(traits, "companyCodes")
-			traits["tenant_id"] = tenant.ID
-			traits["department"] = group.Name
-
-			// Update Kratos
-			updated, updateErr := s.kratos.UpdateIdentity(ctx, userID, traits, identity.State)
-			if updateErr != nil {
-				slog.Error("Failed to update identity traits during AddMember", "user", userID, "error", updateErr)
-			} else if updated != nil {
-				updatedIdentity = updated
-			} else {
-				identity.Traits = traits
-				updatedIdentity = identity
-			}
-		}
-	}
-
-	// Sync local user repo
+	// Kratos는 identity SSOT이고 조직/부서 정보의 원장이 아니므로 AddMember에서 traits를 수정하지 않습니다.
 	if s.userRepo != nil && tenant != nil {
 		localUser, err := s.userRepo.FindByID(ctx, userID)
 		if err != nil || localUser == nil {
-			if updatedIdentity != nil {
-				localUser = mapUserGroupKratosIdentityToLocalUser(*updatedIdentity)
+			if s.kratos != nil {
+				identity, identityErr := s.kratos.GetIdentity(ctx, userID)
+				if identityErr == nil && identity != nil {
+					localUser = mapUserGroupKratosIdentityToLocalUser(*identity)
+				} else {
+					slog.Warn("Skipping local user sync during AddMember because identity read is unavailable", "user", userID, "error", identityErr)
+				}
 			} else {
 				slog.Warn("Skipping local user sync during AddMember because identity projection is unavailable", "user", userID, "error", err)
-				localUser = nil
 			}
 		}
 		if localUser != nil {
@@ -326,7 +301,7 @@ func mapUserGroupKratosIdentityToLocalUser(identity KratosIdentity) *domain.User
 		ID:              identity.ID,
 		Email:           userGroupTraitString(traits, "email"),
 		Name:            userGroupTraitString(traits, "name"),
-		Phone:           userGroupTraitString(traits, "phone_number"),
+		Phone:           domain.NormalizePhoneNumber(userGroupTraitString(traits, "phone_number")),
 		Role:            role,
 		Status:          userGroupIdentityStatus(identity.State),
 		Department:      userGroupTraitString(traits, "department"),