I implemented the necessary utils for making requests to the backend, and used fetching the client ID to test that (screenshot). I backtracked on the implementation and removed tauri-plugin-http as well as removing tauri-plugin-svelte from earlier so that the frontend is entirely self-contained and can be ported to just be a website for those who want that.
on the backend, removing tauri-plugin-http required me to mess around with CORS settings for a while until the browser accepted its responses