{
 "density": 0.35,
 "bending": 0.02,
 "air_damp": 1.0,
 "tensile": 15.0,
 "compress": 15.0,
 "shear": 8.0,
 "method": "agent_prior",
 "notes": {
  "cloth_area_m2": 3.49,
  "early_drop_speed_ms": 0.612,
  "gravity_freefall_check": 0.25
 }
}