Thanks so much for taking the time to play and leave such detailed feedback! I'm really glad you enjoyed the game and that the theme and UI worked well for you.
You brought up several great points. I agree that the jumps could feel less floaty, and giving coins a bigger purpose is something I'd definitely explore in a post-jam update. The idea of showing progress toward the next star is also a really good suggestion.
Thanks as well for pointing out the control inconsistencies, the key UI bug, and the wall-sticking issue. I'll make a note of all of those for future improvements.
I really appreciate the thoughtful feedback, and I'm glad you managed to earn 4 stars!