It has import support (can be templated using handlebars), no automated fetch though
> 2. How is categorization of transactions accomplished? Ideally, I want autocategorization based on my own previously categorized transactions, since the bulk of my transactions are repeats at the same merchants.
It has a very crude tf-idf based categorization. I do have plans to improve it.
> 3. What sort of reporting, dashboarding, and potentially sharing capabilities exist? Ideally, I want to share some reports with my partner
You can checkout the https://demo.paisa.fyi It's just a web app that works over http, so you can run it on a machine and share them access. You have to figure out the authorization part, I do plan to add some password based auth soon.