{
  "$comment": "审计报告合同（专题-09 §4.5）。禁止单一总分类字段：report.py 拒绝 human_score/真人率 等键。pairwise_choice 在 Audit 模式为 null。",
  "type": "object",
  "required": ["summary", "patches", "final"],
  "properties": {
    "summary": {
      "type": "object",
      "required": ["high_confidence_findings", "advisory_findings", "kept_by_design", "needs_author_decision"],
      "properties": {
        "high_confidence_findings": {"type": "array", "items": {"type": "string"}},
        "advisory_findings": {"type": "array", "items": {"type": "string"}},
        "kept_by_design": {"type": "array", "items": {"type": "object", "required": ["finding_id", "reason"], "properties": {"finding_id": {"type": "string"}, "reason": {"type": "string", "minLength": 2}}}},
        "needs_author_decision": {"type": "array", "items": {"type": "object", "required": ["finding_id", "question"], "properties": {"finding_id": {"type": "string"}, "question": {"type": "string", "minLength": 2}}}}
      }
    },
    "patches": {"type": "array"},
    "final": {
      "type": "object",
      "required": ["hard_gate_result", "voice_gate_result", "regression_gate_result", "pairwise_choice", "unresolved_risks"],
      "properties": {
        "candidate_text": {"type": "string"},
        "hard_gate_result": {"type": "object"},
        "voice_gate_result": {"type": "object"},
        "regression_gate_result": {"type": "object"},
        "pairwise_choice": {
          "$comment": "Audit 模式无成对选择，允许 null；Patch 模式必须是完整对象",
          "type": ["object", "null"],
          "required": ["choice", "rationale", "selection_model"],
          "properties": {
            "choice": {"type": "string", "enum": ["original", "candidate", "tie", "both_bad"]},
            "rationale": {"type": "string", "minLength": 2},
            "selection_model": {"type": "string", "minLength": 1}
          }
        },
        "unresolved_risks": {"type": "array", "items": {"type": "string"}}
      }
    }
  }
}