{
  "summary": [
    {
      "name": "pbl_llm_call_log",
      "comment": "LLM 调用日志（超时/重试/限流/兜底留痕）",
      "module": "pbl_agent_runtime",
      "engine": "mariadb",
      "charset": "utf8mb4",
      "tenant_scoped": true
    }
  ],
  "fields": [
    {
      "name": "tenant_id",
      "comment": "租户ID(强制打头)",
      "null": false,
      "type": "str",
      "length": 32
    },
    {
      "name": "id",
      "comment": "主键",
      "null": false,
      "type": "int",
      "length": 20,
      "unsigned": true,
      "auto_increment": true
    },
    {
      "name": "call_uid",
      "comment": "调用UID",
      "null": false,
      "type": "str",
      "length": 32
    },
    {
      "name": "agent_code",
      "comment": "Agent",
      "null": false,
      "type": "str",
      "length": 64
    },
    {
      "name": "route",
      "comment": "路由",
      "null": false,
      "type": "str",
      "length": 64
    },
    {
      "name": "model",
      "comment": "实际模型",
      "null": false,
      "type": "str",
      "length": 64
    },
    {
      "name": "prompt_hash",
      "comment": "提示词哈希",
      "null": false,
      "type": "str",
      "length": 32
    },
    {
      "name": "completion_tokens",
      "comment": "tokens",
      "null": false,
      "type": "int"
    },
    {
      "name": "latency_ms",
      "comment": "时延",
      "null": false,
      "type": "int"
    },
    {
      "name": "status",
      "comment": "状态",
      "null": false,
      "type": "str",
      "length": 64
    },
    {
      "name": "error_code",
      "comment": "错误码",
      "null": false,
      "type": "str",
      "length": 64
    },
    {
      "name": "fallback_used",
      "comment": "走兜底",
      "null": false,
      "type": "bool"
    },
    {
      "name": "created_at",
      "comment": "创建时间",
      "null": false,
      "type": "datetime"
    },
    {
      "name": "updated_at",
      "comment": "更新时间",
      "null": false,
      "type": "datetime"
    }
  ],
  "indexes": [
    {
      "name": "uk_lc_uid",
      "unique": true,
      "fields": [
        "tenant_id",
        "call_uid"
      ]
    },
    {
      "name": "PRIMARY",
      "unique": true,
      "fields": [
        "id"
      ]
    }
  ],
  "codes": []
}