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Traffic Light v1.2.0 — hardware controller + teaching tools
Release notes:
- NEW: hardware controller — drive a real Arduino traffic light over USB
serial (sketch included, pins 2-13); virtual device for board-free demo
- NEW: pedestrian crossings — push-buttons, demand-served WALK windows,
crosswalks and ped signals on the canvas
- NEW: guided lessons — 4 classroom scenario cards
- NEW: quiz mode — 'which axis gets green next?' derived from your plan
- 144 tests, CI green on Windows + Linux
Note: Arduino path verified against mocks; bench test with real hardware
welcome via GitHub issues.