I feel you are asking for perfection from humans rather than building a system that takes it into account and defends against it.

I think that the best you can hope for is a CI process that verifies a minimum quality standard. There are I am sure plenty of CI funnels that measure cyclometric complexity, but “rewrite this because it works but is over complex” is a hard sell, compared to “we need to rethink the whole architecture, give me three months”