phase1-domain-contracts

To decouple backend domain logic from UI concerns, establish a stable, UI-agnostic domain seam between import and nesting logic. This separates domain models and contracts from presentation layers, ensuring vertical slices progress without coupling to persistence or UI frameworks.

A deterministic import-to-nest seam is a stable domain boundary bridging import and nesting logic. It applies compact data shapes and explicit geometry handling to produce predictable, serializer-friendly contracts that ensure consistent nesting expansion behavior.

Yes, you can use this domain seam approach without WPF dependencies. The contracts are designed to be UI-independent, keeping request and response shapes in the domain layer to prevent coupling to specific presentation frameworks or persistence logic.

Define serializer-friendly contracts by stabilizing domain models in the domain layer and using compact representations for import rows. This ensures deterministic expansion during nesting and maintains explicit geometry handling for predictable data processing results.

Nesting logic produces inconsistent results when import and nesting boundaries lack a deterministic domain seam. Establishing compact data shapes and explicit geometry handling in the domain layer ensures predictable, serializer-friendly contracts for stable nesting behavior.