Up front, I'm reading and rating this submission in between meetings while eating gummy bears way too early in the morning because it's already been a stressful one. I feel like the theme here is perfect for the moment I'm in right now.
What an amazing premise. I love the prologue story at the beginning. I think this is something I absolutely need to do for my submission. I love the idea of adding a second, darker chapter to the classic Willy Wonka story.
The five stats are evocative. I love Nonsense, Heart, and Wonder especially. I think Perspiration and Head could be just a little bit more silly to match those. What came to mind for me was Wiggles and Wiles, though Wiles would have some overlap with Nonsense I suppose. Just a thought though, they're definitely good as they are already. Also the Imagination resource cap being the combined value of a character's heart+wonder is very thematic.
Flavoring the GM dice pool as a bag of candy/flavor pool is so good. I feel like you could also do the same thing with the team pool and call it a candy bowl or something, but that might be just a bit confusing.
Weariness is a great "injury" system. Reducing dice pool is a great way to show the sugar crash happening at the table.
Putting something on the character sheet for your dice pool/ spend your successes is SO SMART. What a great way to help cut out some of the challenge in helping players remember what they can do with their dice.
Great job!