Biff 2.0 sneak peak

I have for the past year or two been working on some large Biff changes, such as those discussed in Structuring large Clojure codebases with Biff and Biff support for XTDB v2 is in pre-release . Now that coding agents have gone mainstream (and in particular, now that I personally have started using them heavily), I've had a few more ideas for changes I'd like to make to Biff. And also thanks to coding agents, I've actually been able to make consistent progress instead of my Biff development time being bottl