🧊 Hailstone Growth Lab: Updraft Accretion, Wet-Growth Limit, Melting and a Layered Cutaway — 2D Storm Cross-Section

2D companion of the hailstone growth lab: a storm cross-section with updraft and supercooled water, the stone's path, a layered onion-ring cutaway, the mass budget and the wet-growth limit, using the same physics module as the 3D scene.