{
  "context": "Evaluates whether the solution leverages numpy-stl's recalculation utilities to refresh normals, areas, centroids, and related derived data while producing the mesh summary described in the spec. Focus is on using the library's built-in functions rather than manual geometry math.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Normals refresh",
      "description": "Calls numpy-stl's normal recomputation (e.g., Mesh.update_normals or BaseStl.update_normals) before emitting normals-dependent outputs instead of hand-coding cross products.",
      "max_score": 25
    },
    {
      "name": "Area update",
      "description": "Uses the package's area recalculation (Mesh.update_areas) and reads from mesh.areas when building the summary rather than recomputing areas manually.",
      "max_score": 20
    },
    {
      "name": "Centroid update",
      "description": "Recomputes centroids via Mesh.update_centroids and sources per-facet centroids from mesh.centroids for reporting.",
      "max_score": 15
    },
    {
      "name": "Unit normals",
      "description": "Derives unit-length normals through numpy-stl helpers such as get_unit_normals or the mesh.units property, not by manual normalization.",
      "max_score": 15
    },
    {
      "name": "Degenerate handling",
      "description": "Relies on numpy-stl capabilities to drop zero-area facets (e.g., remove_empty_areas flag during load or filtering via recalculated mesh.areas) before reporting counts and vectors.",
      "max_score": 15
    },
    {
      "name": "Bounds from mesh",
      "description": "Computes min/max bounds using numpy-stl-provided vertex views (mesh.vectors/points) after recalculation rather than maintaining separate geometry sources.",
      "max_score": 10
    }
  ]
}