Cairo Contract Development (Eternum)

Develop Cairo contracts for the Eternum project using Test-Driven Development. This skill enforces a strict workflow: Plan -> Test First -> Implement -> Review.

When to Use This Skill

• "Create a new system for X"
• "Add a model for Y"
• "Implement feature Z in Cairo"
• "Develop a new contract"
• "Build game logic for W"

Iron Law

NO IMPLEMENTATION CODE WITHOUT A FAILING TEST FIRST.

If you write implementation before tests, delete it and start over.