agent-domain

To isolate domain logic in Kotlin, you model entities and use cases in a pure core layer, defining repository interfaces and sealed result types. This enforces clear boundary contracts, decoupling business rules from UI and data layers for safe, testable orchestration.

You orchestrate use cases in a Kotlin domain layer by coordinating entities and repository interfaces to perform actions like ticket validation. Using sealed result types and clear boundary contracts ensures the UI remains decoupled from the core domain logic.

The best way to enforce business rule invariants in a Kotlin domain model is by encapsulating them within pure domain entities. Maintaining constants and configuration for thresholds and validation workflows ensures rules are safely maintained and UI-agnostic.

Yes, you can use a pure Kotlin domain layer for lottery applications across platforms. By remaining Android-free and utilizing repository interfaces, the domain model maintains portability and testability while encapsulating lottery concepts like tickets and draws.

Use sealed result types for domain-level use cases in Kotlin to ensure maintainable and safe collaboration with data and UI layers. Sealed classes provide explicit boundary contracts, allowing the pure domain core to handle outcomes without exposing internal errors.

No, you do not need Android dependencies to implement a pure Kotlin domain layer. The architecture explicitly remains UI- and Android-free, relying on repository interfaces to decouple the core business logic and ensure maximum portability and testability.