I had a lot of fun with this game! The core gameplay loop is solid, with each phase feeding into the next for a constant sense of momentum. It's really satisfying getting to organize everything with a purpose!
I have no major critiques, just some nitpicks centering around polish for the basic mechanics. Hitboxes for the shelves are a bit wonky, instability as a mechanic is a bit opaque, and the UI elements at the top of the screen are too plain, especially give how creative the rest of the UI is. To be clear, I really enjoyed the experience! These critiques are all minor, but I hope they're helpful nonetheless!
Also, the game as a whole reminded me of a lot of the letter sorting minigame from Wind Waker. Was this perhaps part of the inspiration?