Define AUTH_UID and AUTH_UID_SIZE constants.
Introduce motor control pins IN_1‑IN_4 and set them as outputs.
Comment out turn‑signal and sonar pin definitions and related code.
Refactor Display to remove updateDirection functionality.
Extend RFIDReader with reset() and matches() methods; use them to toggle
carEnabled based on RFID authentication.
Update the main loop to operate only when the RFID tag matches the
authorized UID.
GarandPLG