Tutorial

Walk one fictional feature through spec, implementation, review, and cleanup. No grand tour, just the whole loop:

A checkout session older than 30 minutes must return 409 SESSION_EXPIRED, never a 5xx.

The artifacts are valid; shop-api code and commands are illustrative. Use a real repository for executable evidence.

1. Write the spec
2. Implement
3. Review
4. Close

This case earns a spec and deterministic check, but no task. One requirement going to one worker is not a decomposition problem.

Prerequisites: install Suspec, choose a repository, and use an agent or human worker.