coding challenge: game board spinner

Sure, we can translate to width/2, height/2
rotate(someAngle)

... but we need vectors so that it appears to spin 'randomly' and slows down under the force of friction!

We need to check what the final computed angle compares to in the real world (ie rotated exactly 45 degrees maps to "spin again")

its harder than it seems!

No files, tests, or entry points are named. Start by clarifying the spinner's intended behavior, including vector-based motion, friction-based slowing, and how the final angle maps to "spin again"; done means those rules and their expected outcome are specified.

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