UserEntity.kt

// In your shared domain/core module
data class User(
    val id: String,
    val name: String,
    val surname: String,
    val age: Int
)

// In your database module ONLY
@Entity(tableName = "UserTable")
internal data class UserEntity(
    @PrimaryKey val id: String,
    val name: String,
    val surname: String,
    val age: Int
) {
    companion object {
        fun from(user: User): UserEntity {
            return UserEntity(user.id, user.name, user.surname, user.age)
        }
    }

    fun toUser(): User {
        return User(id, name, surname, age)
    }
}