fix: update admin flows and review report

internal/repository/user_role.go

@@ -33,6 +33,11 @@ func (r *UserRoleRepository) DeleteByUserID(ctx context.Context, userID int64) e
 	return r.db.WithContext(ctx).Where("user_id = ?", userID).Delete(&domain.UserRole{}).Error
 }
 
+// DeleteByUserAndRole 删除指定用户和角色的关联
+func (r *UserRoleRepository) DeleteByUserAndRole(ctx context.Context, userID, roleID int64) error {
+	return r.db.WithContext(ctx).Where("user_id = ? AND role_id = ?", userID, roleID).Delete(&domain.UserRole{}).Error
+}
+
 // DeleteByRoleID 删除角色的所有用户
 func (r *UserRoleRepository) DeleteByRoleID(ctx context.Context, roleID int64) error {
 	return r.db.WithContext(ctx).Where("role_id = ?", roleID).Delete(&domain.UserRole{}).Error