Bridge uses async for on AIOESPNow, pack_ws_uplink to Pi, AP channel
from settings. Driver applies binary wire and JSON commands on receive.
Co-authored-by: Cursor <cursoragent@cursor.com>
Replace serial/Wi-Fi driver transport paths with WebSocket bridge client,
binary espnow_wire delivery, device announce registry, and restructured
espnow-sender (AP + broadcast passthrough). Includes docs and tests.
Co-authored-by: Cursor <cursoragent@cursor.com>
