Slaves report pack voltages every 30s; the master caches them for fast
BATTERY_STATUS reads. goTool exposes REST/WebSocket and shows values in
the dashboard, with a nanopb fix so optional lipo submessages encode.
Co-authored-by: Cursor <cursoragent@cursor.com>
Expose OTA_SLAVE_PROGRESS on the master, track per-slave state during
distribution, run ESP-NOW OTA in a background task so the host can poll
while slaves update, and show master/slave progress in the dashboard
with table layout and faster WebSocket refresh during uploads.
Co-authored-by: Cursor <cursoragent@cursor.com>
Serve polls the master over UART and pushes live state via WebSocket;
reopens the serial port when the device is unplugged and comes back.
Co-authored-by: Cursor <cursoragent@cursor.com>
