{
  "material_defaults": {
    "young_modulus": 1000000000000000.0,
    "poisson_ratio": 0.3,
    "damping": 0.0,
    "hardening": 0.0,
    "friction": 0.5,
    "yield_pressure": 1000000000000000.0,
    "tensile_yield_ratio": 0.0,
    "yield_stress": 0.0,
    "hardening_rate": 1.0,
    "softening_rate": 1.0,
    "dilatancy": 0.0,
    "viscosity": 0.0
  },
  "solver_config": {
    "max_iterations": 50,
    "tolerance": 0.0001,
    "solver": "auto",
    "warmstart_mode": "auto",
    "collider_velocity_mode": "forward",
    "voxel_size": 0.02,
    "grid_type": "sparse",
    "grid_padding": 0,
    "max_active_cell_count": -1,
    "max_leaf_node_count": -1,
    "max_lower_node_count": -1,
    "max_upper_node_count": -1,
    "transfer_scheme": "apic",
    "integration_scheme": "pic",
    "critical_fraction": 0.0,
    "air_drag": 1.0,
    "collider_normal_from_sdf_gradient": false,
    "collider_basis": "S2",
    "strain_basis": "P0",
    "velocity_basis": "Q1",
    "separate_worlds": false
  },
  "source_sha256": "584fe578711a96b2fb0abb970bba12f5fe1e1360d2259fb1bb2d930070a055a8",
  "newton_version": "1.6.0",
  "evidence": "Report-date inspection of installed version and bridge overrides. Explicit material presets have historical worker read-back; unspecified defaults are reconstructed from this source, not retroactive worker read-back."
}