feat: freeze and propagate first-leg pallet labels

firstleg/src/main/resources/db/phase3-smart-loading-schema.sql

@@ -348,6 +348,29 @@ CREATE TABLE IF NOT EXISTS fl_loading_plan_item (
   CONSTRAINT chk_loading_item_deleted CHECK (deleted IN (0, 1))
 ) ENGINE=InnoDB COMMENT='智能装柜客户货物明细；客户归属仅在明细层';
 
+CREATE TABLE IF NOT EXISTS fl_loading_pallet_label (
+  id BIGINT UNSIGNED NOT NULL COMMENT '散货托盘标签ID（雪花ID）',
+  loading_plan_id BIGINT UNSIGNED NOT NULL COMMENT '装柜计划ID',
+  loading_plan_item_id BIGINT UNSIGNED NOT NULL COMMENT '标签归属装柜明细ID',
+  account_id BIGINT UNSIGNED NOT NULL COMMENT '客户ID快照',
+  inbound_id BIGINT UNSIGNED NOT NULL COMMENT '入仓单ID快照',
+  inbound_code VARCHAR(40) NOT NULL COMMENT '入仓码快照',
+  container_no VARCHAR(64) NOT NULL COMMENT '真实集装箱号快照',
+  destination_warehouse_code VARCHAR(64) NOT NULL COMMENT 'FBA仓编码快照',
+  destination_warehouse_name VARCHAR(128) NULL COMMENT 'FBA仓名称快照',
+  pallet_index INT UNSIGNED NOT NULL COMMENT '当前柜当前FBA仓内从1开始的序号',
+  pallet_code VARCHAR(128) NOT NULL COMMENT '托盘码：集装箱号-FBA仓编码-三位序号',
+  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '生成时间',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_loading_pallet_code (pallet_code),
+  UNIQUE KEY uk_loading_pallet_index (loading_plan_id,destination_warehouse_code,pallet_index),
+  KEY idx_loading_pallet_item (loading_plan_item_id,pallet_index),
+  KEY idx_loading_pallet_inbound (account_id,inbound_id),
+  CONSTRAINT fk_loading_pallet_plan FOREIGN KEY (loading_plan_id) REFERENCES fl_loading_plan(id),
+  CONSTRAINT fk_loading_pallet_item FOREIGN KEY (loading_plan_item_id) REFERENCES fl_loading_plan_item(id),
+  CONSTRAINT chk_loading_pallet_index CHECK (pallet_index BETWEEN 1 AND 999)
+) ENGINE=InnoDB COMMENT='散货按柜号和FBA仓冻结的可打印托盘码';
+
 -- 柜次级简单文件仅承载目的港清关和提货单；PU资料作为数字码保存在货柜主表。
 CREATE TABLE IF NOT EXISTS fl_container_document (
   id BIGINT UNSIGNED NOT NULL COMMENT '货柜文件关联ID（雪花ID）',