Definitely a cool and ambitious concept for the theme of the jam. Given maybe a clipboard of your approximate stock throughout the store, and some other quality-of-life updates, I think there's a lot of potential to it.
Couple of bugs I found: First, if you're attempting to stock a shelf and it hits zero at the same time, the game soft-locks. Second, if you step on the stockroom pad to get more materials at an angle, the product will be picked up with that odd angle.
Both should be pretty straightforward fixes, but I know there's always time constraints with these things. Full-stars for creativity though, That was a totally new take on the theme!