Something or someone so sweet that it seems like it should be turned into a cake.
Having the ability to make or decorate a cake.
"I am not capable of making cakes today. I'm so tired."
"Would you say that you are not cakeable?"
When not living up to the more or less formalized agreements for collaboration within a collaborating group, thereby causing some small amount of pain for all collaborators. The implied penance is buying or baking cake or similar goodies for the entire group.
In software: a cakeable offence could be committing a breaking change, causing tests not to pass, or projects not to compile