Extract shared M5ATOM vehicle code (esp32, on_loop, LED effects) into
common/vehicle_base.yaml, reducing each vehicle file from ~136 to 20
lines. Remove dead commented-out code from on_loop lambda.
Gate: fix on_multi_click and select indentation, change
esp32_ble_tracker id from ${name} to ${device} (lowercase),
remove unused commented-out gate_flash GPIO sensor.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
randy
