Ubuntu 24.10 upgrade

• The usual:

mh-update-ubuntu
# (ensure all repos are working)
# reboot
# you can connect via direct proxmox shell (not ssh) but seems robust either way
sudo do-release-upgrade

• fix up apt repos
• fix up stow (esp. systemd stuff)
• set up purdy rotating kitty term themes

Check the Ubuntu 24.04 upgrade for more detailed notes.