{
  "lesson_id": "TOL-006",
  "lab_id": "TOL006-LAB1",
  "network_required": false,
  "privilege_required": false,
  "steps": [
    "setup",
    "inspect authority/tool/lock/artifact/env target layers",
    "clean offline reconstruction per ecosystem",
    "missing artifact mutation",
    "tool expectation drift mutation",
    "lock drift mutation",
    "relevant versus irrelevant environment probe",
    "bounded transfer decision"
  ],
  "artifact": "Exact Toolchain Closure Manifest v1",
  "runtime_unavailable_policy": "FAIL_CLOSED_NONZERO"
}