I, too, need to review my code in Gitlab/Github/Gerrit in order to catch errors - somehow they're much more prominent there (like you said, I suppose it's due to adopting a "reviewer's mindset") rather than just looking at `git diff`.
But if possible I would like to review my work in the terminal as a part of my workflow, not needing to context switch to the browser. Has anyone found a good solution to that?
FWIW, using tmux & nvim.