presentation

name: presentation description: Presentation layer serializes domain entities to wire formats (JSON, etc.)

Presentation Layer

app/presentation/ is the seam between the application's domain vocabulary and whatever shape the outside world expects.

app/presentation/
└── representers/    ← Roar decorators that turn entities into JSON

Responsibilities

• Take a domain Entity::* (or response DTO) and produce the JSON / hash the route is about to write
• Decide field ordering, naming on the wire, and formatting (e.g. iso8601 for timestamps)

Non-responsibilities

• No business logic. A representer that calls a policy, queries the DB, or chooses fields based on a runtime rule is doing service work — the service should build the right response DTO first, and presentation should serialize what it gets.
• No domain knowledge. Representers shape data; they do not interpret it.

See ./representers/SKILL.md for the representer conventions and the inline PromptLog example.