Field Guide 16: Awareness, Activation, Retention, Referral and Revenue adapted to design system adoption, as 25 checks. The kit is a metric file with 11 definitions (each with an owner, data source, target and SQLite query), a zero-dependency calculator that turns a CSV event export into a stage table with tracking gaps and small-base warnings, a script that runs the same definitions in SQLite, and a seeded sample of 60 engineers over 13 weeks.
When coverage has stalled and you cannot say whether the leak is discovery, onboarding, the second use or the story leadership hears, or before you promise leadership an adoption number.