I literally couldn’t have maintained my self respect if I hadn’t handed in my resignation letter immediately after all that, even if I was actively looking for

I literally couldn’t have maintained my self respect if I hadn’t handed in my resignation letter immediately after all that, even if I was actively looking for another job. I don’t like to coast even if it’s part of the game; I want to take pride in my work. I even offered in my resignation letter to work until the end of the next month because the rewrite of the feature was still to be deployed and I wanted to see it through to the end before I left but it sadly wasn’t to be.