Graywolf RXT test build 9467c561

Adds separate TM-D700 and TM-D710/G initialization profiles, improves Kenwood startup and reconnect handling, and leaves the bearing azimuth field empty until entered.

In a Serial or USB Serial KISS interface in TNC mode, select the exact Kenwood model under TNC initialization. The new profiles verify the model and select PACKET then KISS using different commands. The D710 preserves its configured data band. Existing kenwood settings retain the old sequence under Kenwood legacy; select your model explicitly to use the new behavior. Frequency, radio packet speed and transmit permission are not configured by these profiles.

Command refusals, rejected RESTART commands and serial disconnections during startup now fail initialization and trigger retries. Early KISS frames are preserved. Connected means the serial session is ready, not that an RF exchange succeeded. Physical radio validation is still required.

Software validation passed: startup states, fragmented replies, invalid acknowledgements, restart refusal, retry, cable-drop reconnection, race checks, and Linux virtual serial ports using Graywolf's real serial driver. No RF hardware was used.

Restart Graywolf after upgrading and refresh the browser. Bearing 0 degrees remains valid when entered explicitly.

Documentation: Kenwood setup.

Commit: 9467c56. Base version: 0.14.14. RXT pre-release for testing. No OCI images; GHCR latest unchanged.