It works ok and good by default. You start using it as if you'd Claude or Codex, the when you find yourself missing a feature, you get an extension for it or you ask an agent to make it.

For example, I started using it, wanted a plan mode, downloaded an extension for it. Wanted to be able to analyze token usage for turn in a session, I had an agent create an extension for that. Then I wanted a custom status bar, so I had an agent implement an extension for that.