What is the name of this app?

Yes

i regenerated cache by clicking Settings > Omnisearch > Clear cache

lemmy isn’t really oriented in that way.

seems you know something can you elaborate more

thx for sugestion

looks very promising src

# zfs create pool/project/production
  populate /pool/project/production with data
# zfs snapshot pool/project/production@today
# zfs clone pool/project/production@today pool/project/beta
  make changes to /pool/project/beta and test them
# zfs promote pool/project/beta
# zfs rename pool/project/production pool/project/legacy
# zfs rename pool/project/beta pool/project/production
  once the legacy version is no longer needed, it can be destroyed
# zfs destroy pool/project/legacy

not tested yet

Do you have a stl of little white cat?