A complete rewrite in Kotlin Multiplatform, adds Augmented Reality, and delivers a fully redesigned interface. What’s New Augmented Reality — place the double pendulum in your real environment using RealityKit. Drag to reposition, pinch to scale, and rotate with two fingers. 3D planet models — a high-resolution Earth and Moon appear in the scene, loading with a smooth fade-in transition. Night sky environment — an HDR skybox sets the scene against a starlit background in standard view. Shuffle — randomize link lengths, offsets, and colors with a single tap. Refined controls — a redesigned top bar with menus for view mode, link colors, and dimensions. Particle emitters — track the location of the tip of the second pendulum link