This is awesome—as a huge fan of the band, I dreamed of someone packaging Poly for Playdate. Thanks for doing it!
I have a small bug report: in pdxinfo, the imagePath is graphics/launch.png. There's a note on this in the docs: "Image files are compiled to Playdate .pdi files by the pdc compiler. When referencing images in code use no extension or the .pdi extension." This bug causes the launcher art to not be shown in some situations.