feat(custom-roles): align chatwoot permissions

internal/repository/account_user_repo.go

@@ -138,6 +138,7 @@ func (r *AccountUserRepo) FindByUserWithAccounts(ctx context.Context, userID uin
 	var accountUsers []model.AccountUser
 	err := r.db.WithContext(ctx).
 		Preload("Account").
+		Preload("CustomRole").
 		Where("user_id = ?", userID).
 		Order("active_at DESC").
 		Order("id ASC").

internal/repository/custom_role_repo.go

@@ -73,7 +73,13 @@ func (r *CustomRoleRepo) Update(ctx context.Context, role *model.CustomRole) err
 
 // Delete soft-deletes a custom role (GORM DeletedAt field).
 func (r *CustomRoleRepo) Delete(ctx context.Context, id, accountID uint) error {
-	return r.db.WithContext(ctx).
-		Where("id = ? AND account_id = ?", id, accountID).
-		Delete(&model.CustomRole{}).Error
-}
+	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := tx.Model(&model.AccountUser{}).
+			Where("account_id = ? AND custom_role_id = ?", accountID, id).
+			Updates(map[string]interface{}{"role": "agent", "custom_role_id": 0}).Error; err != nil {
+			return err
+		}
+		return tx.Where("id = ? AND account_id = ?", id, accountID).
+			Delete(&model.CustomRole{}).Error
+	})
+}