:-)
But seriously, I was wondering about the requirement to shutdown the VM's and couldn't come up with a solid reason? I mean, even if QEMU/KVM/Kernel get replaced during a version upgrade or a more common update, all of these kick in only after the reboot? And how's me shutting down VMs manually different from the OS shutting down during a reboot?
I know I am speculating and may not have the fill picture, probably a question for the Proxmox team, there may be some corner case where this is indeed important.
By the way, Mexican or US black strat? :-)
Let me throw in Paperless NGX, https://github.com/paperless-ngx/paperless-ngx