Well pkexec is installed. Never had issues until updating from 14.1.2 to 14.1.3. I could revert a system or two to 14.1.2 and try to learn why pkexec worked fine there in TDE. My wild guess is the KDE polkit agent was running and I had no need to pay attention to that.
pkexec is expected to work without TDE, there is nothing TDE related there. Maybe it is as you said.
Yes, polkit-tqt is a prerequisite for polkit-agent-tde.
Okay, good. I have both building. Yet I can't get the packages to function. Is there some dependency I am unaware? I don't see anything in the wiki. I get the feeling I am not seeing something obvious, or perhaps the packages are designed with some Debian installation presumptions. I'm on a Slackware system. :)
No other pre requisite AFAIR. The packages are not designed for debian installation, they are general. You just need to make sure you build and install the various config files correctly based on your distro paths.
Cheers Michele