{
  "schema_version": 1,
  "summary": ["补充系统边界条件", "调整三项验收阈值"],
  "changes": [
    {
      "section_locator": "3.2 性能要求 / REQ-PERF-007",
      "change_type": "modified",
      "rationale": "依据新增用户材料与法规检索证据",
      "evidence_refs": ["material:123#sha256", "kb:GB9706#8.4"]
    }
  ],
  "risk": {
    "level": "high",
    "items": [
      {
        "category": "verification",
        "description": "阈值变化会使既有用例失效",
        "mitigation": "重跑 TC-007"
      }
    ]
  },
  "project_impact": {
    "schedule": "可能增加验证工作量",
    "cost": "待评估",
    "scope": "影响性能验证范围",
    "compliance": "需复核风险管理文件"
  },
  "document_impacts": [
    {
      "doc_id": "doc_proj1_test_manager",
      "impact_type": "stale_candidate",
      "reason": "引用的 REQ-PERF-007 已改变",
      "recommended_action": "由测试方案编制人复核并重新基线"
    }
  ],
  "open_questions": ["阈值是否已获得硬件负责人确认"]
}