chore: release v0.19.2

wiki/Amplifiers-and-Switches.md

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+# Amplifiers and Switches
+
+## PowerGenius XL (4O3A) amplifier
+
+Direct TCP connection (Settings → PowerGenius):
+
+- **Operate / Standby** and **fault** display.
+- **Fan-mode** selector (Standard / Contest / Broadcast).
+- When a Flex is connected, the amp controls + its **FWD / ID / TEMP** meters
+  appear in the FlexRadio panel's Amplifier card. See [[FlexRadio]].
+
+## Antenna Genius (4O3A) antenna switch
+
+Over TCP / GSCP — a docked **A/B antenna-switch** widget:
+
+- One row per configured antenna, with a **Port A** and **Port B** button.
+- Colours: green = selected on port A, blue = selected on port B, red (pulsing) =
+  that port is transmitting. Clicking a selected port deselects it (→ None).
+- **Band filter** (funnel icon in the header): shows only the antennas configured
+  for the current band, like the native app. Toggle it off to see all antennas.
+  Antennas with an unknown band mask are always shown.
+
+Configure the host / password in Settings → Antenna Genius.