forked from eros/curltastic
Replace weight-scaled rapier damping with pure initial velocity (m/s), piecewise-linear ice µ(v) table, and post-step a=−µ_eff·g·unit(v) drag. Remove left/right/back wall colliders; OOB stones leave via prune only. game.rs maps legacy weight→velocity via MIN/MAX until B3. Calibrated DRAW_VELOCITY=2.38 m/s lands near tee (±0.8 m). Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>