Zephyr

Traces how one feature of software you may inspect works, with the open-source REA tool, into an evidence-backed note for a clean-room spec.

A hands-on operator that takes your coding and repo tasks and runs them all the way to done. For anyone who wants PRs shipped, not just plans.

Helps you rebuild the one feature you actually use from an app you own, from scratch and on a free or low-cost setup, and tells you honestly when a rebuild isn't worth it.