feat: DAX selector on the Flex panel — routes the active slice's RX audio to a DAX channel (slice dax=0-8, Off..8 dropdown next to the antenna selection, highlighted when active); changelog updated

app.go

@@ -10960,6 +10960,14 @@ func (a *App) FlexSetNRFLevel(l int) error {
 	}
 	return a.cat.FlexDo(func(fc cat.FlexController) error { return fc.SetNRFLevel(l) })
 }
+
+// FlexSetDAX routes the active slice's audio to a DAX channel (0 = off, 1-8).
+func (a *App) FlexSetDAX(ch int) error {
+	if a.cat == nil {
+		return fmt.Errorf("cat not initialized")
+	}
+	return a.cat.FlexDo(func(fc cat.FlexController) error { return fc.SetDAX(ch) })
+}
 func (a *App) FlexSetTXFilter(low, high int) error {
 	if a.cat == nil {
 		return fmt.Errorf("cat not initialized")