After DXSmart auth completes, the beacon often drops BLE connection
due to aggressive timeouts. The disconnect handler was treating this
as a failure, stomping the .connected state before the user could see
the "Write Config" button.
Changes:
- Ignore BLE disconnects during .connected state for DXSmart beacons
(the LED keeps flashing regardless of BLE connection)
- Auto-reconnect in writeConfigToConnectedBeacon() if BLE dropped
while waiting for user confirmation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
KBeaconProvisioner had no onStatusUpdate callback, so the UI showed a static
"Connecting..." message during the entire auth cycle (5 passwords × 5s timeout
× 3 retries = 75s of dead silence). Now reports each phase: connecting,
discovering services, authenticating (with password attempt count), writing,
saving.
Also fixed ScanView disconnect handler to cover .writing and .verifying states —
previously only handled .connecting/.connected, so a mid-write disconnect left
the UI permanently stuck.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
