Improve call buffering, CM handle lifecycle and radio PTT controls

tools/chatgui/src/main.cpp

@@ -72,6 +72,7 @@ int main(int argc, char *argv[]) {
 #endif
     QApplication app(argc, argv);
     app.setApplicationName("vibechat");
+    app.setDesktopFileName("org.utun.vibechat");
     app.setWindowIcon(QIcon(":/icons/app_icon.png"));
     app.setQuitOnLastWindowClosed(false);