I run Claude code inside an emacs vterm for moderately long lived work streams, and an ever shifting set of tmuxes for quick small features or bug fixes. The way I ensure I read the code at least a bit is the same as for wholly hand written code: I never do git add . only for one file at a time, and I got diff each file just prior to adding it (except sometimes for code genned files). I also arrange mostly to do incremental dev, sort of agile where I am the client and claude is the dev team and I check the utility of each feature one by one, so what I end up with delights me. It does tend to do more than is needed, so I will mostly delete code it has written rather than fix things. Like really not every module tunable constant needs to be over rideable from env vars. I am happy with the resulting systems, they have not collapsed into unmaintainable messes yet; the Claude in vterm in emacs is nice where I can think and run shell commands and look at code or git history while having a longer running discussion is nice UX.

I just have git diff open in another terminal. Everything I do is in the terminal.