This chapter is a set of nine reference cards — one per framework — plus the thread table and infrastructure checklist. They are designed to be photographed, printed, and kept close. The goal is 20-second scanability under pressure.
How to use these cards: - For weekly revision: cover the right column and recall from the left - For a design review: scan the relevant card before the meeting - For an incident: use F3 to classify the failure mode, then find the prevention pattern