I applied for SDK access, but heard nothing back. So instead, I’m using the built in “experimental” web browser. It has canvas support, so I’m golden.
As you might have noticed, I couldn’t resist the urge to design a vector font for the task; please be gentle, I know the font leaves a lot to be desired, it’s a work in progress. The Kindle browser didn’t seem to have font support anyway, while public domain, I didn’t particularly enjoy the Hershey fonts. The Hershey fonts are nice, but they’re unsuitable for programming.