@cjtype HarfBuzz is set in IranNastaliq, a freebie font around on the net. The HarfRust one is Astrolabe, by Khaled Hosny:
https://aliftype.com/astrolabe/
We just render the text with the font, move around the glyphs a bit in a graphics editing app for square composition, then feed that to the AI. Eg.
