-- 基础实验：biz_pilot_application 扩展
ALTER TABLE biz_pilot_application
  MODIFY COLUMN biz_type VARCHAR(20) NOT NULL DEFAULT 'pilot_service'
    COMMENT '业务类型: pilot_service=中试服务, clinical_application=临床应用, basic_experiment=基础实验';

ALTER TABLE biz_pilot_application
  ADD COLUMN project_title VARCHAR(200) DEFAULT NULL COMMENT '课题名称（基础实验）' AFTER application_name,
  ADD COLUMN customer_name VARCHAR(200) DEFAULT NULL COMMENT '客户名称（基础实验）' AFTER project_title,
  ADD COLUMN customer_contact VARCHAR(100) DEFAULT NULL COMMENT '客户联系人（基础实验）' AFTER customer_name,
  ADD COLUMN customer_phone VARCHAR(32) DEFAULT NULL COMMENT '客户联系方式（基础实验）' AFTER customer_contact;

ALTER TABLE biz_pilot_payment
  MODIFY COLUMN biz_type VARCHAR(20) NOT NULL DEFAULT 'clinical_application'
    COMMENT '业务类型: clinical_application=临床应用, basic_experiment=基础实验';