Replace old hardware (Mamba F722S, STM32F722, Jetson Nano, hoverboard ESC) with new architecture: Orin Nano Super, ESP32-S3 BALANCE, ESP32-S3 IO, VESC IDs 68/56. Update architecture diagram, hardware tables, UART assignments, firmware build instructions, protocol docs, and 3D parts list. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>