how to start the native GUI client of pgadmin4?

I don’t like web-based GUI, so I only installed the pgadmin4-desktop package for my Kubuntu 20.04, instead of pgadmin4-web and pgadmin4.

According to the offical web page of pgAdmin4,

A desktop runtime written in C++ with Qt allows it to run standalone for individual users…

I’m expecting that a native qt GUI app can be run, and acts as a pg-client, but I can NOT find it out anywhere, neither startting-menu nor the DESTDIR of the installation, i.e /usr/pgadmin4/bin.

There is only one program file /usr/pgadmin4/bin/pgadmin4, but running it still open a browser window to serve as a pg-client, instead of any NATIVE app!

Would please anyone tell me that:

Is the so called "A desktop runtime written in C++ with Qt" meaning a native GUI client app? or only a management server that resides on the system tray?

If a native GUI client really exists, where to find it or how to start it?

Thanks a lot!

Pls forgive my ugly English.