I'll note that I have gone a slightly different path for the main app I wrote: I've written adapters on the js side that generate SQL or API calls depending on where the code is running and I wrote my own select/insert/update/delete tauri commands. The reason I ended up with what seems like a hybrid of the approaches I suggested above is that the js side knows more about what it wants and therefore generates SQL/api calls with the appropriate joins and preloads. On the tauri side I wanted to intercept at the data layer for a custom sync engine, which the frontend doesn't need to know about. However, I've ended up at that solution maybe because I added the tauri side after writing for the web.