What are the concrete architectural trade-offs between Zustand and Redux Toolkit, and when should a team choose one over the other?

Imagine you have a big box of toys. Redux Toolkit is like having a rulebook that says exactly how to take toys out and put them back, which is great for big groups. Zustand is like a simple shelf where you can grab and put toys quickly, perfect for small playdates. You pick the one that fits how many kids are playing.