chore: release v0.19.2

wiki/Audio-and-Keyers.md

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+# Audio and Keyers
+
+## CW keyer
+
+A CW keyer with **macros** and F-key macros. The keyer **engine** is selectable
+(Settings → CW Keyer):
+
+- **WinKeyer** — K1EL WK1/2/3 over a COM port.
+- **Icom** — the radio's own keyer over CI-V, no extra hardware. Works over the
+  remote link too. (Requires the Icom CAT backend; set break-in to SEMI/FULL or
+  the rig keys the sidetone but stays in RX.)
+- **TCI** — for TCI backends.
+
+## Digital Voice Keyer (DVK)
+
+Record **F1–F6** voice messages and transmit them. Set the audio devices, PTT
+method and gains in Settings → Audio.
+
+- **PTT** method: CAT, RTS, DTR, or none (VOX).
+- **Test PTT** keys the rig briefly. On CAT/OmniRig the key is held ~1.5 s so the
+  transmit command is actually sent (OmniRig is asynchronous and coalesces rapid
+  writes).
+
+## QSO audio recording
+
+Continuous rolling capture. On **Log QSO** the contact is saved to a per-QSO WAV
+(`CALL_YYYYMMDD_HHMMSS.wav`), mixing RX + mic. Configure the recordings folder,
+format (WAV / MP3), pre-roll and gains in Settings → Audio.
+
+## RX audio monitor (USB rigs)
+
+Settings → Audio → **Listen to radio** pipes the rig's received audio (its "USB
+Audio CODEC" input) through your speakers, so you hear the radio inside OpsLog.
+**Talk to radio** keys PTT and pipes your mic to the rig's audio input. (Network
+audio for remote Icom is a work in progress — see
+[[Remote Icom over the Internet]].)