Sorry to break it to you, its from our internal project (only the editor part) which had way less feature. And you should watch commit history of open source projects more often every single one usages Claude/codex, people no longer code by hand its over.

Vibe coded or not , proper engineering , testing , fixing , iteration is still needed . Your don't have one , full of crashes and bugs.

That's not true. Look at Emacs, look at GCC