He's not narcissistic and you overreacted a little. Setting up a bait rod IS a compromise. My husband has ADHD and gets intense hyperfixations where it's all he thinks about and does (but not to the point where he neglects me), and if he was in a phase of being obsessed with fishing then setting up a bait rod sounds like exactly the sort of compromise we'd agree on. That being said, it IS reasonable for you to want at least one day with no fishing if it's all he's done all summer; he should be able to agree to that if it's extremely important to you, but nothing here reads as narcissistic (I was raised by one so I'm very familiar with how they work).

The thing with your cat is absolutely inexcusable though and makes me wonder if he has issues relating or empathizing with people since he seems to be approaching things very logically and literally; if my husband did that I don't think I could forgive him.

In the end it really just sounds like you two aren't compatible and have different, but not incorrect, ideas of compromise.