radio: Silero VAD + auto-PTT; chatgui/android: app icon and background

tools/chatgui/src/mainwindow.cpp

@@ -650,7 +650,7 @@ void MainWindow::onDmMsgReceived(const QString& convId, quint64 author) {
 
 void MainWindow::setupTray() {
     m_trayIcon = new QSystemTrayIcon(this);
-    m_trayIcon->setIcon(style()->standardIcon(QStyle::SP_ComputerIcon));
+    m_trayIcon->setIcon(QIcon(":/icons/app_icon.png"));
     m_trayIcon->setToolTip("vibechat");
 
     m_trayMenu = new QMenu(this);