Request preparation

• I used an AI assistant to help structure this request
• I checked for existing issues covering the same feature

What would you like?

These commands are well-documented in FlexLib (CWX.cs). They do NOT require
a separate VITA-49 stream — they travel on the existing TCP command channel.

TCI protocol

TCI uses a plain TCP socket with newline-delimited text commands.
Reference: https://github.com/maksimus1210/TCI
Key messages: cw:, cw_macros_speed:, voice_message:, stop, trx:, xit:

SSB voice playback

No radio-side command needed for voice playback — audio is injected on the
client side via the existing AudioEngine TX path. The radio receives it as
ordinary mic audio when xmit 1 is asserted.

Acceptance Criteria

• AetherSDR starts a TCI server on the configured port when connected; a
  CW text command from N1MM+ or DXLog.net causes the radio to key CW
  correctly on the active slice.
• The CW macro panel in PhoneCwApplet sends queued CW text via
  cw queue and the STOP button flushes the queue; macro text and labels
  survive an application restart.
• CW speed set via the TCI cw_macros_speed message or the WPM spinner
  in the macro panel is reflected on the radio (verify with slice get
  response showing the new speed).
• The SSB voice macro panel plays a .wav file over the TX audio path,
  asserts PTT automatically, and drops PTT when playback ends or STOP is
  pressed; no audio artifact is audible after PTT release.
• TCI port, enable/disable toggle, and all macro slots are configurable
  in the GUI and persisted via AppSettings (not QSettings)