{
  "error": "Brain API HTTP 502: {\n  \"ok\": false,\n  \"error\": \"Academy structured output invalid after round-specific canonicalisation: Academy structured output invalid: round 1 needs three method steps\",\n  \"retryable\": true,\n  \"infrastructure_failure\": true,\n  \"output_contract\": \"academy_round_json_v6\",\n  \"exam_round\": 1,\n  \"raw_answer\": \"{\\n  \\\"round\\\": 1,\\n  \\\"principles\\\": [\\n    \\\"Use explicit units, origins, axes and coordinate systems.\\\",\\n    \\\"Prefer constrained construction geometry for functional features.\\\",\\n    \\\"",
  "payload": {
    "error": "Academy structured output invalid after round-specific canonicalisation: Academy structured output invalid: round 1 needs three method steps",
    "exam_round": 1,
    "infrastructure_failure": true,
    "initial_raw_answer": "",
    "initial_raw_answer_sha256": "",
    "model_retry_count": 0,
    "model_retry_reason": "",
    "ok": false,
    "output_contract": "academy_round_json_v6",
    "raw_answer": "{\n  \"round\": 1,\n  \"principles\": [\n    \"Use explicit units, origins, axes and coordinate systems.\",\n    \"Prefer constrained construction geometry for functional features.\",\n    \"Maintain closed, valid solids for manufacturing.\"\n  ],\n  \"repeatable_method_steps\": [\n    \"Define origin and axis orientation with labeled coordinates.\",\n    \"Construct base profile using explicit geometric constraints.\",\n    \"Apply extrusion direction vector to generate solid volume.\",\n    \"Verify manifold integrity before finalizing output.\"\n  ],\n  \"acceptance_criteria\": [\n    \"Output is a closed, non-manifold-free solid geometry.\",\n    \"All faces have consistent normal orientation relative to the axis of motion.\"\n  ],\n  \"required_inputs\": [\n    \"Base profile definition with explicit coordinates\",\n    \"Extrusion direction vector and distance value\"\n  ],\n  \"safe_knowledge_gate\": \"Theoretical understanding of coordinate systems and solid geometry rules.\",\n  \"limitations\": [\n    \"Cannot validate physical fit or material properties without external simulation tools.\",\n    \"Output is purely geometric data; it does not include manufacturing tolerances.\"\n  ],\n  \"forge_execution_allowed\": false\n}",
    "raw_answer_audited": true,
    "raw_answer_sha256": "2c5066e4102b4f4c206ce8193082d46c46bccd3e3dca2c5f818d524b5a9116eb",
    "retryable": true
  }
}