Structured spec-driven development workflow for projects that use a `.dev/` workspace. Use when the user wants to document existing code as reusable reference material, list `.dev` work items, write an implementation plan into `.dev/<name>/plan.md`, implement code strictly from that plan, create a refactor plan, or run an adversarial review that updates `.dev/<name>/plan.md`. Keywords: .dev folder, dev workflow, copy existing code, plan feature, execute plan, refactor analysis, adversarial review.
2026-04-15