Thanks! covary is my first Svelte 5 project (have not yet migrated my Svelte 4 projects). The backend is surprisingly simple, but I'm relatively familiar with the data and statistics, so maybe that's why it's so simple and/or perceived as such by me. I really like working on the human interface layer, i.e. the frontend. Backend work for me is always in the service of that.

If you find a viable alternative to Svelte and React, please let me know.