fix(firstleg): require real container before pda push

deploy/sql/头程数据库统一增量-MySQL8.sql

@@ -8712,6 +8712,11 @@ CREATE TABLE IF NOT EXISTS fl_ocean_booking (
       OR pending_estimated_arrival_at >= pending_estimated_sailing_at)
 ) ENGINE=InnoDB COMMENT='独立海运订舱聚合；柜次仍由fl_container_booking承载';
 
+-- CREATE TABLE IF NOT EXISTS does not reconcile a database initialized before customer became optional.
+ALTER TABLE fl_ocean_booking
+  MODIFY COLUMN customer_id BIGINT UNSIGNED NULL COMMENT '可选客户ID快照',
+  MODIFY COLUMN customer_name VARCHAR(128) NULL COMMENT '可选客户名称快照';
+
 CREATE TABLE IF NOT EXISTS fl_ocean_booking_party (
   id BIGINT UNSIGNED NOT NULL COMMENT '订舱提单关系方ID',
   ocean_booking_id BIGINT UNSIGNED NOT NULL COMMENT '所属海运订舱ID',