Just finished this. Absolutely high-quality sokoban, loved the narrative, and a very robust level editor to boot (could use some tweaks, like a better way to navigate the items because scrolling's a chore--maybe not resetting the filters after a playtest is a good start? Also, being able to attach triggers to the cutscene entity would be VERY nice).
Just waiting on that itch.io build now because I personally prefer that over Steam.