I don't use a formal code of conduct for my projects.
The rationale for that is that these are personal projects that are worked upon (by everyone) in good faith, and I will exercise my own unilateral judgment on anything I believe to be detrimental to myself, my mental health, or the well-being of other contributors and collaborators of my projects.
There is no formal process for being booted from my projects either, but expect me to retaliate on any ill-intended activity.
At the time of this writing, there are 8 billion other human beings that I'd rather talk to than you, should you wish to be a nuisance to my eyes.