Grub-btrfs package would allow to see snapshots in grub menu. here is the project: https://github.com/Antynea/grub-btrfs?ysclid=l6izpiffge514741762 Kali linux automatically uses it when on btrfs install, that is also a great idea: https://www.kali.org/docs/installation/btrfs/
Tested it on local VM, it works. Created snapshots could be used and modified independently unless booted read-only (tricky according to documentation)
Уже собирается.
Последняя версия уже в сизифе https://packages.altlinux.org/ru/sisyphus/srpms/grub-btrfs/