Concept:

• The \model folder acts as the isolated single source of truth for the structure of the data.

The \model folder contains pure data entities which define the core business of the game without any dependencies on the backend framework or frontend UI. These entities remain completely separate from application-specific logic and represent the naked, fundamental state of the application.

Crucially, models represent strict relational boundaries and normalized data. They avoid deep nesting and instead use simple ID references to connect aggregate roots (for example, a Team model merely holds a leagueId, rather than a full League object). The responsibility of expanding these relationships into nested structures is left entirely to the DTOs.

Related

• DDD Building Blocks: which archetype each concept became
• Shared DTO Package
• DTO Dressing Pattern