Claude suggested the same approach for something very similar I asked and ended up deploying and using. Quite useful and snappy architecture (never used workers or durable objects). Definitely not self-hosted but whatever, I think you got the msg from all other comments.

I built it without having a chatbot interface cause I don't see much of the point, like I didn't see the improvement in usefulness 5 years ago re "natural language" task creation a la todoist.