Long overdue, I started a collection of ClojureScript test configurations, so far all for Shadow-cljs. It basically builds up to Kaocha-cljs2 by first starting from a "vanilla" shadow test setup, then adding Chui, then setting up all the things you need for kaocha-cljs2
Kaocha parallelization is nearly ready! I just added some docs to the PR (https://github.com/lambdaisland/kaocha/pull/234): https://github.com/lambdaisland/kaocha/blob/a1a0fa6ec1334d4c322627f8473b5e8ee7b69a17/doc/04_running_kaocha_cli.md#parallelization