It's really cool to see someone else gravitate toward this idea. I think there might be some real potential in the future. I wrote about a similar idea in 2022 [0] and 2023 [1]. The service worker approach was heavily inspired by Richard Anaya's work [2]. HTMX migrating to fetch [3] makes this even easier. I had to create a xhr-fetch-proxy [4] to intercept requests with htmx today. I'm not the author, but would be happy to answer any questions.

[0] https://logankeenan.com/posts/a-rust-server-app-compiled-to-...

[1] https://logankeenan.com/posts/client-side-server-with-rust-a...

[2] https://github.com/richardanaya/wasm-service

[3] https://www.hackerneue.com/item?id=45803358

[4] https://github.com/logankeenan/xhr-fetch-proxy