[
  {
    "code": "squad.blueprint_not_found",
    "http": 404,
    "severity": "info",
    "retry": "never",
    "side_effects": "none",
    "summary": "任务模板不存在",
    "hint": "确认蓝图键，或改走自主规划"
  },
  {
    "code": "squad.cancelled",
    "http": 499,
    "severity": "info",
    "retry": "never",
    "side_effects": "possible",
    "summary": "运行已取消",
    "hint": "取消后的步骤保持可恢复，不要写成成功"
  },
  {
    "code": "squad.goal_required",
    "http": 400,
    "severity": "warn",
    "retry": "never",
    "side_effects": "none",
    "summary": "目标文本为空",
    "hint": "提供 goal.text 后再发起运行"
  },
  {
    "code": "squad.hitl_pending",
    "http": 409,
    "severity": "info",
    "retry": "never",
    "side_effects": "none",
    "summary": "运行挂起等待人工",
    "hint": "读取 pending 请求，回应后再续跑；不要并发重复推进"
  },
  {
    "code": "squad.intent_refused",
    "http": 400,
    "severity": "warn",
    "retry": "never",
    "side_effects": "none",
    "summary": "目标被意图守卫拒绝",
    "hint": "该输入命中守卫意图；按引导调整目标，或改用对应系统功能入口，不要重试原文本"
  },
  {
    "code": "squad.plan_rejected",
    "http": 422,
    "severity": "warn",
    "retry": "never",
    "side_effects": "none",
    "summary": "计划被拒绝",
    "hint": "调整目标或编制后重新规划"
  },
  {
    "code": "squad.quality_failed",
    "http": 422,
    "severity": "error",
    "retry": "never",
    "side_effects": "possible",
    "summary": "交付质检未通过",
    "hint": "修复交付物或走人工放行；自动修复预算用尽后不要假装完成"
  },
  {
    "code": "squad.role_not_found",
    "http": 404,
    "severity": "info",
    "retry": "never",
    "side_effects": "none",
    "summary": "角色不存在",
    "hint": "确认角色键已注册；未知智能体不得静默回落 stub"
  },
  {
    "code": "squad.run_not_found",
    "http": 404,
    "severity": "info",
    "retry": "never",
    "side_effects": "none",
    "summary": "运行不存在",
    "hint": "确认 run_id；进程重启后以磁盘状态为准"
  },
  {
    "code": "squad.step_failed",
    "http": 500,
    "severity": "error",
    "retry": "transient",
    "side_effects": "possible",
    "summary": "步骤执行失败",
    "hint": "区分瞬时/永久失败；非关键步骤可降级，关键步骤终止"
  },
  {
    "code": "squad.unknown_backend",
    "http": 400,
    "severity": "error",
    "retry": "never",
    "side_effects": "none",
    "summary": "未知智能体后端",
    "hint": "fail-closed：拒绝执行并留痕，不要回落 stub"
  }
]