Sadly, I didn't get anything done the first two days due to traveling and have worked on the project far less than I should have the rest of the time. That said, I've created the project, usually the hardest part of the development process for me :-), have learned a ton about how to structure my literate Org mode files better, and been persuaded to stop trying to do all my Lisp programming in Clojure and try to learn Common Lisp better. So, despite having to declare my failure to complete the jam as intended, it has been and continues to be an extremely valuable learning experience.
Thanks to everyone who's organizing and participating! I can only hope that my contributions will one day become as significant.