You don’t have classified documents, but you probably use bank in your browser running as your user. Maybe you use local mail program to send emails, also running as your user. A simple malware could add emails to be send asking your family to send you some money through online service.

And that’s easily done because the only isolation layer is user and group.

Are you saying that AI slop is bad in those (counts) 4 removed lines of code?

Uh, your graph is missing power levels for Lenin and Stalin.

Open a console with top/htop and check if it will be visible when the system halts.

From my experience it looks like out of memory situation and some process starts swapping like crazy, or a faulty hdd that tries to read some part of the disk over and over again without success.