🛰️ 2D Spinning Space Station: Spin Gravity, Coriolis Ball Toss, Hoop Game and Runner Weight in a Rotating Habitat

A rotating space habitat in 2D: spin gravity omega^2 R, a ball thrown in the station frame or the space frame, the Coriolis shift against a flat-floor prediction, an aim solver for a hoop game, runner weight and a drop test, with in-page checks against an RK4 integration of the rotating-frame equations.