- Define g_twai_bus_off in vesc_can.c, declare in vesc_can.h (was
referenced in main.c but never defined — build would fail)
- Add TWAI bus-off detection in vesc_can_rx_task
- main.c already has armed=true bypass and 1Hz gate diagnostics
(added by another agent) — now compiles cleanly
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>