Dead simple CI - http://deadsimpleci.sparrowhub.io/ could be thought as an extension to any modern CI system - GitHub/Gitea/Gitlab/Forgejo/you name it , adding to default pipeline mechanism (usually based on yaml) the convenient for programmers use of general programming languages, it uses web hooks and commit statues API to report results back to native CI
Honestly this looks like it sits in the useless middle ground between “proper CI that has all the features you expect” and “just write a Python/Deno script or whatever”. I can’t see what you gain.
Also you say “no painful YAML pipelines” but it uses YAML??