{
  "geometry": {
    "mesh": "plate_hole.obj",
    "surface_selection": { "threshold": 1e-7 }
  },
  "materials": { "type": "Laplacian" },
  "preset_problem": { "type": "Franke" },
  "solver": { "linear": { "solver": "Eigen::SparseLU" } },
  "output": {
    "json": "stats.json",
    "paraview": { "file_name": "result.vtu" }
  }
}