# Lesson 5 complete — OPFS track complete

Learner finished lesson 5 (decision playbook) with **all quiz answers correct**. Demonstrated synthesis: Gate A job/store, Gate B private tree/handles, Gate C async streams vs dedicated-worker sync access, Gate D ship risks (quota, locks, re-hydrate, private vs UVFS, multi-device truth). Full track lessons 1–5 done lesson-first; external primaries remain optional enrichment. Mission success criteria met for design-review judgment on file-shaped client storage.