# Lesson 5 complete; primaries deferred

Learner finished lesson 5 (deal-breakers & debugging) with all quiz answers correct. No external primary reads. Floor for synthesis: wrong-tool rejects (not CPU, HTTPS, progressive enhancement), stale shell / update lag / versioned SW URL anti-pattern, DevTools levers (Update on reload, shift-reload, Network from ServiceWorker). Next: **decision playbook** (mission payoff) — four gates, full briefs, no re-teach of lifecycle from zero.