BLE reconnection bug (ESP32-S3 / Arduino BLE)

[Jollar24]

Problem:

After the first successful pairing, reconnecting a bonded device failed. The Companion connected only after removing the bond ("Forget device") and pairing again. New pairing always worked; subsequent reconnects did not.

Cause:

SerialBLEInterface::checkRecvFrame() reset deviceConnected from pServer->getConnectedCount(). On some Android devices, onAuthenticationComplete() occurred before m_connectedCount was updated, so deviceConnected was immediately cleared and never restored. As a result, writeFrame() refused to send any responses.

Fix:

File: src/helpers/esp32/SerialBLEInterface.cpp

• Removed:
  if (pServer->getConnectedCount() == 0) deviceConnected = false;
  from SerialBLEInterface::checkRecvFrame().

• Added:
  deviceConnected = false;
  to SerialBLEInterface::onDisconnect().

This makes connection state event-driven instead of polling getConnectedCount(), fixing bonded-device reconnection.