Web demo playusablegame-theory-matrix renders as a economics toy model with adjustable controls, a checklist, and public safety copy.
Keep rendered route, console, network, and safe-copy checks attached before release embedding.Native mobile screencontract readyThe surface uses touch-sized controls, a single-column mobile layout, no hover-only actions, and no raw child media capture.
Port the same controls into the native shell and verify phone, tablet, offline resume, reduced motion, and bottom-rail navigation.ChromeOS input paritycontract readyThe web surface keeps range controls, stepper buttons, evidence capture, and review links available to keyboard, pointer, and touch users.
Capture Chromebook-class keyboard, pointer, touch, reduced-motion, and timing proof before widening classroom rollout.