{
  "ok": false,
  "skill_id": "parametric_cad.parameter-architecture",
  "lane": "tool_evidence",
  "status": "infrastructure_retry",
  "retryable": true,
  "infrastructure_failure": true,
  "infrastructure_failures": 1,
  "error": "Brain API HTTP 502: {\n  \"ok\": false,\n  \"error\": \"Academy structured output invalid after round-specific canonicalisation\",\n  \"retryable\": true,\n  \"infrastructure_failure\": true,\n  \"output_contract\": \"academy_round_json_v4\",\n  \"exam_round\": 2,\n  \"raw_answer\": \"{\\\"skill_id\\\":\\\"parametric_cad.parameter-architecture\\\",\\\"name\\\":\\\"Parameter architecture\\\",\\\"domain\\\":\\\"parametric_cad\\\",\\\"risk\\\":\\\"low\\\",\\\"lane\\\":\\\"tool_evidence\\\",\\\"professional_review\\\":false,\\\"round\\\":2,\\\"focus\\\":\\\"failure diagnosis, provenance and safety",
  "evidence": "/SHiREVault/SHiREAcademy/Practice/parametric_cad/parameter-architecture/20260724T132751211669Z"
}
