v1.1
Compatible with 1.21.11
Just double-checking that everything works fine in this version!
Failsafe
There is no feature to undo a vanity change, however there is a function you can run in case you wish to split the pieces.
Run the command /execute as @e[type=item,limit=1,sort=nearest] run function vanityarmor:split to split apart the nearest item to you.