All that looks and sounds excellent. Take your time, but please let me know when this is ready!
As I understand it your app removes any need for planning Octatrack projects because everything can be changed so easily. Which is a gamechanger for people who can only spend very little time on making music.
If I understand this correctly, one could even use your app to record patterns via midi into another sequencer in real time?
I like that, this would allow people who no longer own an OT but still have backups get access to their music again.
Now what would be really cool is a way to connect your App to rytm-rs and some software for the Digis (probably a future iteration of Elkherd, or something new entirely) to transfer patterns between devices. I guess that even approximations of sounds might be possible, especially between OT, DT and AR, or between AR and ST.