This mod and Stacker both Redirect the onTakeOutput method in AnvilScreenHandler.

https://github.com/Andrew6rant/Stacker/blob/1.18.2/src/main/java/io/github/Andrew6rant/stacker/mixin/AnvilScreenHandlerMixin.java

I'm not sure whether an Inject-cancel would be better, or maybe a mixin plugin. Thoughts?

https://github.com/vlad2305m/AkashicTomeOfToolsFabric/releases/tag/1.3
I figured out how to do plugins. Hopefully works now.

https://github.com/Andrew6rant/Stacker/blob/37f249b16a7679e4e4c07b75ac9e8d55f9d0e151/src/main/java/io/github/Andrew6rant/stacker/mixin/DispenserBehaviorMixin.java#L32
Do not check for the count and I will gladly disable my mixin on that.

Your anvil mixin is mutually incompatible with Charm btw