{
  "context": "Evaluates whether the solution uses numpy-stl's I/O APIs to load STL files with automatic ASCII/BINARY detection, control output formats, and surface the Cython speedups toggle. Scoring looks only at correct usage of mesh.Mesh.from_file, mesh.Mesh.save, and related Mode/speedups settings, not general code quality.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Auto load",
      "description": "Uses mesh.Mesh.from_file (or BaseStl.load through Mesh) with mode=Mode.AUTOMATIC to ingest STL files and derive the detected format for both ASCII and binary inputs.",
      "max_score": 25
    },
    {
      "name": "Speedups toggle",
      "description": "Passes the speedups parameter from user input into mesh.Mesh.from_file (or BaseStl.load) and reflects the resulting mesh.speedups flag, allowing runs with Cython optimizations disabled when requested.",
      "max_score": 20
    },
    {
      "name": "Force ASCII save",
      "description": "When ASCII output is requested, calls mesh.Mesh.save with mode=Mode.ASCII rather than relying on defaults, ensuring binary inputs are explicitly written as ASCII.",
      "max_score": 20
    },
    {
      "name": "Force binary save",
      "description": "When binary output is requested, calls mesh.Mesh.save with mode=Mode.BINARY to emit binary STL data even if the source mesh was ASCII.",
      "max_score": 20
    },
    {
      "name": "Auto save behavior",
      "description": "For the default path, preserves the detected format (or uses Mode.AUTOMATIC) when saving so that outputs match input format unless an override is provided.",
      "max_score": 15
    }
  ]
}