{
  "checker": {
    "details": {
      "argv": [
        "<host-path>",
        "<host-path>",
        "-i",
        "<host-path>"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "{\"version\": 1, \"meshName\": \"cube\", \"meshDimension\": 3, \"groups\": {\"volumes\": [\"SOLID\"], \"surfaces\": [\"BOTTOM\", \"TOP\"], \"edges\": [], \"nodes\": [\"SUPPORT\"]}}",
      "working": true
    },
    "status": "PASS"
  },
  "deviations": [
    "README 'Development' section 1 (node/npm install via nodesource) and 2 (npm install) and 5 (npm run build:webview / npm run compile) were not run: they are for the VS Code extension build, and the task's useful operation is the Python backend. Node/npm are not installed in the guest.",
    "Plain 'python3 -m venv' failed (ensurepip missing: 'apt install python3.12-venv'); installed python3.12-venv via apt and recreated the venv."
  ],
  "main_blocker": null,
  "operation": "Ran python/mesh_groups.py on python/tests/fixtures/meshes/cube.med; it read the MED mesh via medcoupling and returned JSON with meshName cube, meshDimension 3, groups volumes [SOLID], surfaces [BOTTOM, TOP], nodes [SUPPORT].",
  "operation_scope": "Covers the Python backend (mesh_groups.py) only. The VS Code extension itself (Node/TypeScript host, webviews, npm build) was not built or run; no browser or cave/code_aster needed for this operation. The LSP server (python/lsp/server.py) was not exercised.",
  "outcome": "working",
  "steps": [
    "Read README: Installation section 2.2 / 2.1 Python deps: pip install numpy pygls==1.3.1 medcoupling",
    "apt-get install -y python3.12-venv python3-pip (system prerequisite)",
    "python3 -m venv <host-path>",
    "<host-path> install numpy pygls==1.3.1",
    "<host-path> install medcoupling (succeeded)",
    "<host-path> python/mesh_groups.py -i python/tests/fixtures/meshes/cube.med (succeeded, rc=0)"
  ],
  "stuck_step": null,
  "suggested_fix": null
}