Ignore: 🔧 Seperate Business Logic From DeviceTokenRegisterService

[psychology50]

작업 이유

• Addressed factors that make TDD challenging.
• For more details, refer to this blog post.

작업 사항

• Business rules are now handled by first-class objects that represent domain rules.
• Service classes now perform integration testing with infrastructure components.

리뷰어가 중점적으로 확인해야 하는 부분

• Is the separation of business rules and infrastructure appropriate?
• Are there potential edge cases in how the first-class objects handle domain rules?

발견한 이슈

• DeviceToken Persistence:
  • Despite being generated within a transaction (Tx), DeviceToken was not persisted unless explicitly created using a create method. Although the issue has been resolved, the root cause is still under investigation.