// Shared base configuration of the computational study (fixed unless a design overrides it).
// Family: internal level-0 skeleton (2x2 root grid), no boundary frame, 256 leaf cells (16x16-equivalent) at rho = 0.2.
module.exports = {
  W: 1, H: 1, n0x: 2, n0y: 2, depth: 3, branching: 4, layout: 'grid', disorder: 0.35, includeFrame: false, frameMode: 'none',
  relDensity: 0.2, densityMode: 'relative', thicknessRatio: 0.6, redundancy: 0, connectivity: 1,
  interfaceMode: 'segment', interfaceFraction: 0.15, mergeFraction: 0.05,
  E: 1, failStrain: 0.02, strengthCV: 0.05, strengthLevelRatio: 1, interfaceStrengthRatio: 0.8, interfaceStiffnessRatio: 1,
  bendingFactor: 1, residualStiffness: 0, ductilityRatio: 1, compressiveRatio: 0,
  gripType: 'clamped', dispIncrement: 0.001, maxDisp: 0.25, exactEvents: true, maxIterations: 5000, tolerance: 1e-7, stabilization: 1e-12, tieTolerance: 1e-9,
  stopForceFraction: 0.01, maxEvents: 50000, maxElements: 60000
};