5.3Why This Workflow Is the Right Division of Labor

The plan → generate → heal split mirrors how a senior QA engineer actually works, and it puts the human review where it's cheapest and highest-leverage — at the plan stage, in Markdown, before any code exists:

PRD ──► Planner ──► specs/*.md ──► HUMAN REVIEW ──► Generator ──► tests/*.spec.ts
                                                                      │
                                              CI failure ──► Healer ──┘

Reviewing a ten-line scenario description takes a minute. Reviewing 300 lines of generated test code takes an hour. Push your judgment upstream.