spdm-backend/1-sql/2026-02-26/simulation_design_versions.sql

ALTER TABLE spdm_baseline.simulation_design_versions ADD beforeContents longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '上个版本内容（JSON字符串）';
ALTER TABLE spdm_baseline.simulation_design_versions ADD cidFlowId varchar(255) NULL COMMENT 'cid流程实例id';