07ad26b54a
The SDR audio bridge was forwarding PCM to server-side decoders but never encoding it to Opus for rx_audio_tx, so TCP audio clients (browser RX button) received nothing. Add Opus encoder initialised from the rig's audio config and encode each PCM frame alongside the pcm_tx broadcast. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>