Your question is Scalable Component Library Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Walk me through your process for designing a scalable component library.
Discuss how you would define component APIs, separate design tokens from behavior, support SwiftUI and UIKit consumers, handle accessibility and Dynamic Type, and prevent breaking changes as adoption grows. Keep the answer focused on Apple platforms, using Swift, SwiftUI, UIKit, and standard Xcode tooling.