---

name: todo-domain-expert description: Provides domain knowledge and rules for Todo task management systems.

Todo Domain Rules

Core Entities

• Task
• User

Task Attributes

• id
• title
• description
• status (pending, completed)
• created_at
• updated_at

Domain Rules

• Every task belongs to exactly one user
• Users cannot access others’ tasks
• Status transitions must be valid
• Deletion must be explicit

UX Expectations

• Clear confirmations
• Helpful error messages
• Predictable behavior

Apply consistently across CLI, Web, and AI Agent phases.