Here’s how I would do this task with cursor, especially if there are more routes.

I would open a chat and refactor the template together with cursor: I would tell it what I want and if I don’t like something, I would help it to understand what I like and why. Do this for one route and when you are ready, ask cursor to write a rules file based on the current chat that includes the examples that you wanted to change and some rationale as to why you wanted it that way.

Then in the next route, you can basically just say refactor and that’s it. Whenever you find something that you don’t like, tell it and remind cursor to also update the rules file.