bluetoothctl info auto-connects to trusted devices, stealing the
connection from Docker — document hcitool as safe alternative and
add connection loop recovery steps.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
MC_BLE_PIN was non-functional — bleak in Docker cannot perform
interactive pairing (no BlueZ agent). Pairing must be done on
the host before starting mc-webui. Added comprehensive pairing
guide at docs/meshcore_bluetooth_pairing.md.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>