feature-design

name	feature-design
description	Design a feature before implementation using boundaries, phases, and acceptance criteria.
compatibility	opencode

When to use

• A new feature or large enhancement is requested.

Procedure

1. Identify user goal and impacted parts of the system.
2. Research existing patterns in the repository.
3. Propose the simplest compatible design.
4. Break the work into phases.
5. Define acceptance criteria and verification steps.

Output

• Design summary
• affected files or layers
• risks and assumptions
• phased plan