I can save you a ton of waiting for someone else to come and say it...
as far as appdownloader goes...
If you are wondering what borked it.
Naturally it will be the cat issues ..and .conflicts springing from using apt while devel or other cats are enabled...or multiple cats are enabled...

And the result is a given.

There isn't anything starkly remarkable or unique about your situation or results...Maemish...

All the symptoms are characteristic of enabled cats that shouldn't have been...and use of apt to "force install" and "fix missing"...thereby drawing on cats stuff that shouldn't have been ...
And purging stuff that shouldn't have been purged...
Leaving you with a snarly mess I wouldn't even try to untangle ..
I am sure your issues are systemic....deep and far reaching.
Couldn't pay me to undo such a mess.

Nothing unique about the situation though...

Best is to reflash ...and document everything you do from that moment....