Remove BlueCharmProvisioner, KBeaconProvisioner, and FallbackProvisioner.
Simplify BeaconType enum to DX-Smart only. Simplify BLE detection to only
show CP-28 beacons. Remove multi-type provisioner factory from ScanView.
-989 lines of dead code removed. Other beacon types will be re-added
when we start using different hardware.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
