[
  {
    "code": "intent.invalid_spec",
    "http": 400,
    "severity": "error",
    "retry": "never",
    "side_effects": "none",
    "summary": "意图定义校验失败",
    "hint": "检查 spec 的 id/domain/matcher/slots 与来源文件；整批配置已原子拒绝"
  },
  {
    "code": "intent.load_failed",
    "http": 500,
    "severity": "error",
    "retry": "never",
    "side_effects": "none",
    "summary": "意图配置加载失败",
    "hint": "查看来源路径与解析原因；失败时保留上一生效快照"
  },
  {
    "code": "intent.spec_protected",
    "http": 400,
    "severity": "error",
    "retry": "never",
    "side_effects": "none",
    "summary": "试图覆盖或禁用保护域意图",
    "hint": "保护域由宿主构建时声明；修改须走宿主内置定义，不接受 overlay"
  }
]