No side-by-side diff is a deal-breaker for me unfortunately.

I use git icdiff (a plugin) in my terminal. I use Zed and VSCode GUI editors, but I don’t care to use their git tools. Command line git is fine.

https://www.jefftk.com/icdiff

This is a great divider between people who want an IDE vs a text editor - Zed explicit is the latter.