I’ve used it for several improvements to our wysiwyg. I was able to refactor to a much more cohesive architecture that is making future work much easier/safer. We got a fzf like search algorithm for an autocomplete that includes marking which characters matched. It fixed some jank performance issues I was struggling to track down.

Fixed small several bugs last week without even open the editor. It wrote tests that confirmed the bugs, then fixed them. Then I manually confirmed as well.

It built a double entry event log. A single application event produces two logs, one for the person doing the action, one for the person being acted upon.

For a nasty problem we have, we had AI prototype 2 different solutions. Then we reveiewed them as a team. We threw those out but it was very helpful input into our decision making.