券商 API資金流水查詢帳戶活動紀錄查詢帳戶活動紀錄 GET /openapi/broker/activities/cash • 功能說明：依活動類型取得帳戶活動紀錄 Request Responses200401417500OKUnauthorized: Authentication requiredA business logic error triggered when the request cannot be processed due to domain-specific constraints.Internal Server Error.