Cool! Have you written more about this? (EDIT: from your profile, is that what https://relay.md is about?)
I can try to write it up (I am a bit behind this week though...), but I basically opened claude code and said "write a new skill that uses the chrome debug protocol to drive end to end tests in Obsidian" and then whenever it had problems I said "fix the skill to look up the element at the x,y coordinate before clicking" or whatever.
Skills are just markdown files, sometimes accompanied by scripts, so they work really naturally with Obsidian.
https://notes.danielgk.com/Obsidian/Obsidian+E2E+testing+Cla...