diff --git a/deploy/sql/头程数据库统一增量-MySQL8.sql b/deploy/sql/头程数据库统一增量-MySQL8.sql
index 71fe4e825..dc43fd4f9 100644
--- a/deploy/sql/头程数据库统一增量-MySQL8.sql
+++ b/deploy/sql/头程数据库统一增量-MySQL8.sql
@@ -5322,8 +5322,10 @@ BEGIN
   IF OLD.task_status = 'COMPLETED' THEN
     SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '已完成PDA拣货任务不可修改';
   END IF;
-  IF NEW.loading_plan_id <> OLD.loading_plan_id OR NOT (NEW.container_no <=> OLD.container_no) THEN
-    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务归属不可修改';
+  IF NEW.loading_plan_id <> OLD.loading_plan_id
+     OR NOT (NEW.container_booking_id <=> OLD.container_booking_id)
+     OR NOT (NEW.cabinet_no <=> OLD.cabinet_no) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务稳定归属不可修改';
   END IF;
   IF NOT (OLD.task_status = 'LOADING' AND NEW.task_status IN ('LOADING', 'COMPLETED')) THEN
     SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务状态只允许完成';
@@ -13988,31 +13990,55 @@ DROP PROCEDURE IF EXISTS migrate_phase3_channel_containers;
 DELIMITER $$
 CREATE PROCEDURE migrate_phase3_channel_containers()
 BEGIN
+  DECLARE EXIT HANDLER FOR SQLEXCEPTION
+  BEGIN
+    GET DIAGNOSTICS CONDITION 1
+      @phase3_channel_sqlstate = RETURNED_SQLSTATE,
+      @phase3_channel_errno = MYSQL_ERRNO,
+      @phase3_channel_message = MESSAGE_TEXT;
+  END;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking' AND column_name='channel_code') THEN
-    ALTER TABLE baiyue_firstleg.fl_ocean_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER customer_name,
-      ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code,
-      ADD COLUMN warehouse_id BIGINT UNSIGNED NULL COMMENT '国内中转仓ID快照' AFTER channel_name,
-      ADD COLUMN warehouse_name VARCHAR(128) NULL COMMENT '国内中转仓名称快照' AFTER warehouse_id;
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER customer_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking' AND column_name='channel_name') THEN
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking' AND column_name='warehouse_id') THEN
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking ADD COLUMN warehouse_id BIGINT UNSIGNED NULL COMMENT '国内中转仓ID快照' AFTER channel_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking' AND column_name='warehouse_name') THEN
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking ADD COLUMN warehouse_name VARCHAR(128) NULL COMMENT '国内中转仓名称快照' AFTER warehouse_id;
   END IF;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking_container_requirement' AND column_name='capacity_cbm') THEN
-    ALTER TABLE baiyue_firstleg.fl_ocean_booking_container_requirement ADD COLUMN capacity_cbm DECIMAL(18,4) NULL COMMENT '柜型容量快照m3' AFTER container_kind,
-      ADD COLUMN max_weight_kg DECIMAL(18,3) NULL COMMENT '柜型最大承重快照kg' AFTER capacity_cbm;
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking_container_requirement ADD COLUMN capacity_cbm DECIMAL(18,4) NULL COMMENT '柜型容量快照m3' AFTER container_kind;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_ocean_booking_container_requirement' AND column_name='max_weight_kg') THEN
+    ALTER TABLE baiyue_firstleg.fl_ocean_booking_container_requirement ADD COLUMN max_weight_kg DECIMAL(18,3) NULL COMMENT '柜型最大承重快照kg' AFTER capacity_cbm;
   END IF;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_container_booking' AND column_name='channel_code') THEN
-    ALTER TABLE baiyue_firstleg.fl_container_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER cabinet_no,
-      ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code,
-      ADD COLUMN ocean_booking_id BIGINT UNSIGNED NULL COMMENT '来源订舱ID' AFTER channel_name,
-      ADD COLUMN ocean_booking_requirement_id BIGINT UNSIGNED NULL COMMENT '来源订舱箱型需求ID' AFTER ocean_booking_id;
+    ALTER TABLE baiyue_firstleg.fl_container_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER cabinet_no;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_container_booking' AND column_name='channel_name') THEN
+    ALTER TABLE baiyue_firstleg.fl_container_booking ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_container_booking' AND column_name='ocean_booking_id') THEN
+    ALTER TABLE baiyue_firstleg.fl_container_booking ADD COLUMN ocean_booking_id BIGINT UNSIGNED NULL COMMENT '来源订舱ID' AFTER channel_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_container_booking' AND column_name='ocean_booking_requirement_id') THEN
+    ALTER TABLE baiyue_firstleg.fl_container_booking ADD COLUMN ocean_booking_requirement_id BIGINT UNSIGNED NULL COMMENT '来源订舱箱型需求ID' AFTER ocean_booking_id;
   END IF;
   UPDATE baiyue_firstleg.fl_container_booking c JOIN baiyue_firstleg.fl_ocean_booking_container_allocation a ON a.container_booking_id=c.id
     JOIN baiyue_firstleg.fl_ocean_booking b ON b.id=a.ocean_booking_id
      SET c.ocean_booking_id=b.id,c.ocean_booking_requirement_id=a.requirement_id,c.channel_code=COALESCE(c.channel_code,b.channel_code),c.channel_name=COALESCE(c.channel_name,b.channel_name)
-   WHERE c.ocean_booking_id IS NULL OR c.ocean_booking_requirement_id IS NULL OR c.channel_code IS NULL;
+   WHERE c.ocean_booking_id IS NULL OR c.ocean_booking_requirement_id IS NULL
+      OR c.channel_code IS NULL OR c.channel_name IS NULL;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_loading_pick_task' AND column_name='container_booking_id') THEN
-    ALTER TABLE baiyue_firstleg.fl_loading_pick_task ADD COLUMN container_booking_id BIGINT UNSIGNED NULL COMMENT '稳定柜次ID' AFTER loading_plan_id,
-      ADD COLUMN cabinet_no VARCHAR(64) NULL COMMENT '稳定内部柜次号快照' AFTER container_booking_id,
-      MODIFY COLUMN container_no VARCHAR(64) NULL COMMENT '废弃兼容字段；不得作为任务身份';
+    ALTER TABLE baiyue_firstleg.fl_loading_pick_task ADD COLUMN container_booking_id BIGINT UNSIGNED NULL COMMENT '稳定柜次ID' AFTER loading_plan_id;
   END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='baiyue_firstleg' AND table_name='fl_loading_pick_task' AND column_name='cabinet_no') THEN
+    ALTER TABLE baiyue_firstleg.fl_loading_pick_task ADD COLUMN cabinet_no VARCHAR(64) NULL COMMENT '稳定内部柜次号快照' AFTER container_booking_id;
+  END IF;
+  ALTER TABLE baiyue_firstleg.fl_loading_pick_task MODIFY COLUMN container_no VARCHAR(64) NULL COMMENT '废弃兼容字段；不得作为任务身份';
   UPDATE baiyue_firstleg.fl_loading_pick_task t JOIN baiyue_firstleg.fl_loading_plan p ON p.id=t.loading_plan_id JOIN baiyue_firstleg.fl_container_booking c ON c.id=p.container_booking_id
      SET t.container_booking_id=c.id,t.cabinet_no=c.cabinet_no WHERE t.container_booking_id IS NULL OR t.cabinet_no IS NULL;
   IF EXISTS (SELECT 1 FROM baiyue_firstleg.fl_loading_pick_task WHERE container_booking_id IS NULL OR cabinet_no IS NULL) THEN
@@ -14023,8 +14049,91 @@ BEGIN
   END IF;
 END$$
 DELIMITER ;
+SET @phase3_channel_sqlstate = NULL;
+SET @phase3_channel_errno = NULL;
+SET @phase3_channel_message = NULL;
+DROP TRIGGER IF EXISTS baiyue_firstleg.trg_container_booking_before_update;
+DROP TRIGGER IF EXISTS baiyue_firstleg.trg_loading_pick_task_before_update;
 CALL migrate_phase3_channel_containers();
 DROP PROCEDURE IF EXISTS migrate_phase3_channel_containers;
+DROP TRIGGER IF EXISTS baiyue_firstleg.trg_container_booking_before_update;
+DELIMITER $$
+CREATE TRIGGER baiyue_firstleg.trg_container_booking_before_update
+BEFORE UPDATE ON baiyue_firstleg.fl_container_booking
+FOR EACH ROW
+BEGIN
+  DECLARE current_plan_status VARCHAR(24);
+  SELECT MAX(plan_status) INTO current_plan_status
+    FROM baiyue_firstleg.fl_loading_plan WHERE container_booking_id = OLD.id;
+  IF current_plan_status = 'COMPLETED' THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '装柜完成后货柜全部只读，不允许修改';
+  END IF;
+  IF current_plan_status = 'LOADING' AND (
+       NOT (OLD.id <=> NEW.id) OR NOT (OLD.booking_no <=> NEW.booking_no)
+    OR NOT (OLD.cabinet_no <=> NEW.cabinet_no)
+    OR NOT (OLD.channel_code <=> NEW.channel_code) OR NOT (OLD.channel_name <=> NEW.channel_name)
+    OR NOT (OLD.ocean_booking_id <=> NEW.ocean_booking_id)
+    OR NOT (OLD.ocean_booking_requirement_id <=> NEW.ocean_booking_requirement_id)
+    OR NOT (OLD.warehouse_id <=> NEW.warehouse_id) OR NOT (OLD.warehouse_name <=> NEW.warehouse_name)
+    OR NOT (OLD.bill_of_lading_no <=> NEW.bill_of_lading_no) OR NOT (OLD.vessel_name <=> NEW.vessel_name)
+    OR NOT (OLD.container_type <=> NEW.container_type)
+    OR NOT (OLD.shipping_company_id <=> NEW.shipping_company_id) OR NOT (OLD.shipping_company_name <=> NEW.shipping_company_name)
+    OR NOT (OLD.departure_port_code <=> NEW.departure_port_code) OR NOT (OLD.departure_port_name <=> NEW.departure_port_name)
+    OR NOT (OLD.destination_port_code <=> NEW.destination_port_code) OR NOT (OLD.destination_port_name <=> NEW.destination_port_name)
+    OR NOT (OLD.destination_warehouse_code <=> NEW.destination_warehouse_code) OR NOT (OLD.destination_warehouse_name <=> NEW.destination_warehouse_name)
+    OR NOT (OLD.capacity_cbm <=> NEW.capacity_cbm) OR NOT (OLD.max_weight_kg <=> NEW.max_weight_kg)
+    OR NOT (OLD.terminal_trucking_company <=> NEW.terminal_trucking_company) OR NOT (OLD.loading_at <=> NEW.loading_at)
+    OR NOT (OLD.estimated_sailing_at <=> NEW.estimated_sailing_at) OR NOT (OLD.actual_sailing_at <=> NEW.actual_sailing_at)
+    OR NOT (OLD.estimated_port_arrival_at <=> NEW.estimated_port_arrival_at) OR NOT (OLD.actual_port_arrival_at <=> NEW.actual_port_arrival_at)
+    OR NOT (OLD.estimated_warehouse_arrival_at <=> NEW.estimated_warehouse_arrival_at) OR NOT (OLD.actual_warehouse_arrival_at <=> NEW.actual_warehouse_arrival_at)
+    OR NOT (OLD.created_by <=> NEW.created_by) OR NOT (OLD.created_by_name <=> NEW.created_by_name)
+    OR NOT (OLD.created_at <=> NEW.created_at)
+  ) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '装柜中仅允许修改集装箱号与航次';
+  END IF;
+END$$
+DELIMITER ;
+DROP TRIGGER IF EXISTS baiyue_firstleg.trg_loading_pick_task_before_update;
+DELIMITER $$
+CREATE TRIGGER baiyue_firstleg.trg_loading_pick_task_before_update
+BEFORE UPDATE ON baiyue_firstleg.fl_loading_pick_task
+FOR EACH ROW
+BEGIN
+  IF OLD.task_status = 'COMPLETED' THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '已完成PDA拣货任务不可修改';
+  END IF;
+  IF NEW.loading_plan_id <> OLD.loading_plan_id
+     OR NOT (NEW.container_booking_id <=> OLD.container_booking_id)
+     OR NOT (NEW.cabinet_no <=> OLD.cabinet_no) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务稳定归属不可修改';
+  END IF;
+  IF NOT (OLD.task_status = 'LOADING' AND NEW.task_status IN ('LOADING', 'COMPLETED')) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务状态只允许完成';
+  END IF;
+END$$
+DELIMITER ;
+DROP PROCEDURE IF EXISTS assert_phase3_channel_container_migration;
+DELIMITER $$
+CREATE PROCEDURE assert_phase3_channel_container_migration()
+BEGIN
+  DECLARE diagnostic_message VARCHAR(128);
+  IF @phase3_channel_sqlstate IS NOT NULL THEN
+    SET diagnostic_message = LEFT(CONCAT('渠道柜迁移失败 [', @phase3_channel_sqlstate, '/',
+      @phase3_channel_errno, ']: ', @phase3_channel_message), 128);
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = diagnostic_message;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.triggers WHERE trigger_schema='baiyue_firstleg'
+      AND trigger_name='trg_container_booking_before_update') THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT='渠道柜迁移失败：货柜只读触发器未恢复';
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.triggers WHERE trigger_schema='baiyue_firstleg'
+      AND trigger_name='trg_loading_pick_task_before_update') THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT='渠道柜迁移失败：PDA任务只读触发器未恢复';
+  END IF;
+END$$
+DELIMITER ;
+CALL assert_phase3_channel_container_migration();
+DROP PROCEDURE IF EXISTS assert_phase3_channel_container_migration;
 CREATE TABLE IF NOT EXISTS baiyue_firstleg.fl_container_transport_history (
   id BIGINT UNSIGNED NOT NULL,container_booking_id BIGINT UNSIGNED NOT NULL,before_container_no VARCHAR(64) NULL,after_container_no VARCHAR(64) NULL,
   before_voyage_no VARCHAR(64) NULL,after_voyage_no VARCHAR(64) NULL,reason VARCHAR(500) NULL,operator_id BIGINT UNSIGNED NOT NULL,
diff --git a/firstleg/src/main/resources/db/phase3-channel-container-migration.sql b/firstleg/src/main/resources/db/phase3-channel-container-migration.sql
index 4f7baa66a..a142f7761 100644
--- a/firstleg/src/main/resources/db/phase3-channel-container-migration.sql
+++ b/firstleg/src/main/resources/db/phase3-channel-container-migration.sql
@@ -5,33 +5,60 @@ DROP PROCEDURE IF EXISTS migrate_phase3_channel_containers;
 DELIMITER $$
 CREATE PROCEDURE migrate_phase3_channel_containers()
 BEGIN
+  DECLARE EXIT HANDLER FOR SQLEXCEPTION
+  BEGIN
+    GET DIAGNOSTICS CONDITION 1
+      @phase3_channel_sqlstate = RETURNED_SQLSTATE,
+      @phase3_channel_errno = MYSQL_ERRNO,
+      @phase3_channel_message = MESSAGE_TEXT;
+  END;
+
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking' AND column_name='channel_code') THEN
-    ALTER TABLE fl_ocean_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER customer_name,
-      ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code,
-      ADD COLUMN warehouse_id BIGINT UNSIGNED NULL COMMENT '国内中转仓ID快照' AFTER channel_name,
-      ADD COLUMN warehouse_name VARCHAR(128) NULL COMMENT '国内中转仓名称快照' AFTER warehouse_id;
+    ALTER TABLE fl_ocean_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER customer_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking' AND column_name='channel_name') THEN
+    ALTER TABLE fl_ocean_booking ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking' AND column_name='warehouse_id') THEN
+    ALTER TABLE fl_ocean_booking ADD COLUMN warehouse_id BIGINT UNSIGNED NULL COMMENT '国内中转仓ID快照' AFTER channel_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking' AND column_name='warehouse_name') THEN
+    ALTER TABLE fl_ocean_booking ADD COLUMN warehouse_name VARCHAR(128) NULL COMMENT '国内中转仓名称快照' AFTER warehouse_id;
   END IF;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking_container_requirement' AND column_name='capacity_cbm') THEN
-    ALTER TABLE fl_ocean_booking_container_requirement ADD COLUMN capacity_cbm DECIMAL(18,4) NULL COMMENT '柜型容量快照m3' AFTER container_kind,
-      ADD COLUMN max_weight_kg DECIMAL(18,3) NULL COMMENT '柜型最大承重快照kg' AFTER capacity_cbm;
+    ALTER TABLE fl_ocean_booking_container_requirement ADD COLUMN capacity_cbm DECIMAL(18,4) NULL COMMENT '柜型容量快照m3' AFTER container_kind;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_ocean_booking_container_requirement' AND column_name='max_weight_kg') THEN
+    ALTER TABLE fl_ocean_booking_container_requirement ADD COLUMN max_weight_kg DECIMAL(18,3) NULL COMMENT '柜型最大承重快照kg' AFTER capacity_cbm;
   END IF;
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_container_booking' AND column_name='channel_code') THEN
-    ALTER TABLE fl_container_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER cabinet_no,
-      ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code,
-      ADD COLUMN ocean_booking_id BIGINT UNSIGNED NULL COMMENT '来源订舱ID' AFTER channel_name,
-      ADD COLUMN ocean_booking_requirement_id BIGINT UNSIGNED NULL COMMENT '来源订舱箱型需求ID' AFTER ocean_booking_id;
+    ALTER TABLE fl_container_booking ADD COLUMN channel_code VARCHAR(64) NULL COMMENT '订舱渠道编码快照' AFTER cabinet_no;
   END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_container_booking' AND column_name='channel_name') THEN
+    ALTER TABLE fl_container_booking ADD COLUMN channel_name VARCHAR(128) NULL COMMENT '订舱渠道名称快照' AFTER channel_code;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_container_booking' AND column_name='ocean_booking_id') THEN
+    ALTER TABLE fl_container_booking ADD COLUMN ocean_booking_id BIGINT UNSIGNED NULL COMMENT '来源订舱ID' AFTER channel_name;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_container_booking' AND column_name='ocean_booking_requirement_id') THEN
+    ALTER TABLE fl_container_booking ADD COLUMN ocean_booking_requirement_id BIGINT UNSIGNED NULL COMMENT '来源订舱箱型需求ID' AFTER ocean_booking_id;
+  END IF;
+
   UPDATE fl_container_booking c
     JOIN fl_ocean_booking_container_allocation a ON a.container_booking_id=c.id
     JOIN fl_ocean_booking b ON b.id=a.ocean_booking_id
      SET c.ocean_booking_id=b.id,c.ocean_booking_requirement_id=a.requirement_id,
          c.channel_code=COALESCE(c.channel_code,b.channel_code),c.channel_name=COALESCE(c.channel_name,b.channel_name)
-   WHERE c.ocean_booking_id IS NULL OR c.ocean_booking_requirement_id IS NULL OR c.channel_code IS NULL;
+   WHERE c.ocean_booking_id IS NULL OR c.ocean_booking_requirement_id IS NULL
+      OR c.channel_code IS NULL OR c.channel_name IS NULL;
+
   IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_loading_pick_task' AND column_name='container_booking_id') THEN
-    ALTER TABLE fl_loading_pick_task ADD COLUMN container_booking_id BIGINT UNSIGNED NULL COMMENT '稳定柜次ID' AFTER loading_plan_id,
-      ADD COLUMN cabinet_no VARCHAR(64) NULL COMMENT '稳定内部柜次号快照' AFTER container_booking_id,
-      MODIFY COLUMN container_no VARCHAR(64) NULL COMMENT '废弃兼容字段；不得作为任务身份';
+    ALTER TABLE fl_loading_pick_task ADD COLUMN container_booking_id BIGINT UNSIGNED NULL COMMENT '稳定柜次ID' AFTER loading_plan_id;
   END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='fl_loading_pick_task' AND column_name='cabinet_no') THEN
+    ALTER TABLE fl_loading_pick_task ADD COLUMN cabinet_no VARCHAR(64) NULL COMMENT '稳定内部柜次号快照' AFTER container_booking_id;
+  END IF;
+  ALTER TABLE fl_loading_pick_task MODIFY COLUMN container_no VARCHAR(64) NULL COMMENT '废弃兼容字段；不得作为任务身份';
   UPDATE fl_loading_pick_task t JOIN fl_loading_plan p ON p.id=t.loading_plan_id
     JOIN fl_container_booking c ON c.id=p.container_booking_id
      SET t.container_booking_id=c.id,t.cabinet_no=c.cabinet_no
@@ -44,9 +71,97 @@ BEGIN
   END IF;
 END$$
 DELIMITER ;
+
+SET @phase3_channel_sqlstate = NULL;
+SET @phase3_channel_errno = NULL;
+SET @phase3_channel_message = NULL;
+DROP TRIGGER IF EXISTS trg_container_booking_before_update;
+DROP TRIGGER IF EXISTS trg_loading_pick_task_before_update;
 CALL migrate_phase3_channel_containers();
 DROP PROCEDURE IF EXISTS migrate_phase3_channel_containers;
 
+-- Rebuild the production guard unconditionally before surfacing a migration failure.
+DROP TRIGGER IF EXISTS trg_container_booking_before_update;
+DELIMITER $$
+CREATE TRIGGER trg_container_booking_before_update
+BEFORE UPDATE ON fl_container_booking
+FOR EACH ROW
+BEGIN
+  DECLARE current_plan_status VARCHAR(24);
+  SELECT MAX(plan_status) INTO current_plan_status
+    FROM fl_loading_plan WHERE container_booking_id = OLD.id;
+  IF current_plan_status = 'COMPLETED' THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '装柜完成后货柜全部只读，不允许修改';
+  END IF;
+  IF current_plan_status = 'LOADING' AND (
+       NOT (OLD.id <=> NEW.id) OR NOT (OLD.booking_no <=> NEW.booking_no)
+    OR NOT (OLD.cabinet_no <=> NEW.cabinet_no)
+    OR NOT (OLD.channel_code <=> NEW.channel_code) OR NOT (OLD.channel_name <=> NEW.channel_name)
+    OR NOT (OLD.ocean_booking_id <=> NEW.ocean_booking_id)
+    OR NOT (OLD.ocean_booking_requirement_id <=> NEW.ocean_booking_requirement_id)
+    OR NOT (OLD.warehouse_id <=> NEW.warehouse_id) OR NOT (OLD.warehouse_name <=> NEW.warehouse_name)
+    OR NOT (OLD.bill_of_lading_no <=> NEW.bill_of_lading_no) OR NOT (OLD.vessel_name <=> NEW.vessel_name)
+    OR NOT (OLD.container_type <=> NEW.container_type)
+    OR NOT (OLD.shipping_company_id <=> NEW.shipping_company_id) OR NOT (OLD.shipping_company_name <=> NEW.shipping_company_name)
+    OR NOT (OLD.departure_port_code <=> NEW.departure_port_code) OR NOT (OLD.departure_port_name <=> NEW.departure_port_name)
+    OR NOT (OLD.destination_port_code <=> NEW.destination_port_code) OR NOT (OLD.destination_port_name <=> NEW.destination_port_name)
+    OR NOT (OLD.destination_warehouse_code <=> NEW.destination_warehouse_code) OR NOT (OLD.destination_warehouse_name <=> NEW.destination_warehouse_name)
+    OR NOT (OLD.capacity_cbm <=> NEW.capacity_cbm) OR NOT (OLD.max_weight_kg <=> NEW.max_weight_kg)
+    OR NOT (OLD.terminal_trucking_company <=> NEW.terminal_trucking_company) OR NOT (OLD.loading_at <=> NEW.loading_at)
+    OR NOT (OLD.estimated_sailing_at <=> NEW.estimated_sailing_at) OR NOT (OLD.actual_sailing_at <=> NEW.actual_sailing_at)
+    OR NOT (OLD.estimated_port_arrival_at <=> NEW.estimated_port_arrival_at) OR NOT (OLD.actual_port_arrival_at <=> NEW.actual_port_arrival_at)
+    OR NOT (OLD.estimated_warehouse_arrival_at <=> NEW.estimated_warehouse_arrival_at) OR NOT (OLD.actual_warehouse_arrival_at <=> NEW.actual_warehouse_arrival_at)
+    OR NOT (OLD.created_by <=> NEW.created_by) OR NOT (OLD.created_by_name <=> NEW.created_by_name)
+    OR NOT (OLD.created_at <=> NEW.created_at)
+  ) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '装柜中仅允许修改集装箱号与航次';
+  END IF;
+END$$
+DELIMITER ;
+
+DROP TRIGGER IF EXISTS trg_loading_pick_task_before_update;
+DELIMITER $$
+CREATE TRIGGER trg_loading_pick_task_before_update
+BEFORE UPDATE ON fl_loading_pick_task
+FOR EACH ROW
+BEGIN
+  IF OLD.task_status = 'COMPLETED' THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '已完成PDA拣货任务不可修改';
+  END IF;
+  IF NEW.loading_plan_id <> OLD.loading_plan_id
+     OR NOT (NEW.container_booking_id <=> OLD.container_booking_id)
+     OR NOT (NEW.cabinet_no <=> OLD.cabinet_no) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务稳定归属不可修改';
+  END IF;
+  IF NOT (OLD.task_status = 'LOADING' AND NEW.task_status IN ('LOADING', 'COMPLETED')) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务状态只允许完成';
+  END IF;
+END$$
+DELIMITER ;
+
+DROP PROCEDURE IF EXISTS assert_phase3_channel_container_migration;
+DELIMITER $$
+CREATE PROCEDURE assert_phase3_channel_container_migration()
+BEGIN
+  DECLARE diagnostic_message VARCHAR(128);
+  IF @phase3_channel_sqlstate IS NOT NULL THEN
+    SET diagnostic_message = LEFT(CONCAT('渠道柜迁移失败 [', @phase3_channel_sqlstate, '/',
+      @phase3_channel_errno, ']: ', @phase3_channel_message), 128);
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = diagnostic_message;
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.triggers WHERE trigger_schema=DATABASE()
+      AND trigger_name='trg_container_booking_before_update') THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT='渠道柜迁移失败：货柜只读触发器未恢复';
+  END IF;
+  IF NOT EXISTS (SELECT 1 FROM information_schema.triggers WHERE trigger_schema=DATABASE()
+      AND trigger_name='trg_loading_pick_task_before_update') THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT='渠道柜迁移失败：PDA任务只读触发器未恢复';
+  END IF;
+END$$
+DELIMITER ;
+CALL assert_phase3_channel_container_migration();
+DROP PROCEDURE IF EXISTS assert_phase3_channel_container_migration;
+
 CREATE TABLE IF NOT EXISTS fl_container_transport_history (
   id BIGINT UNSIGNED NOT NULL, container_booking_id BIGINT UNSIGNED NOT NULL,
   before_container_no VARCHAR(64) NULL, after_container_no VARCHAR(64) NULL,
diff --git a/firstleg/src/main/resources/db/phase3-smart-loading-schema.sql b/firstleg/src/main/resources/db/phase3-smart-loading-schema.sql
index c0fad8087..35f20fabe 100644
--- a/firstleg/src/main/resources/db/phase3-smart-loading-schema.sql
+++ b/firstleg/src/main/resources/db/phase3-smart-loading-schema.sql
@@ -808,8 +808,10 @@ BEGIN
   IF OLD.task_status = 'COMPLETED' THEN
     SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = '已完成PDA拣货任务不可修改';
   END IF;
-  IF NEW.loading_plan_id <> OLD.loading_plan_id OR NOT (NEW.container_no <=> OLD.container_no) THEN
-    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务归属不可修改';
+  IF NEW.loading_plan_id <> OLD.loading_plan_id
+     OR NOT (NEW.container_booking_id <=> OLD.container_booking_id)
+     OR NOT (NEW.cabinet_no <=> OLD.cabinet_no) THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务稳定归属不可修改';
   END IF;
   IF NOT (OLD.task_status = 'LOADING' AND NEW.task_status IN ('LOADING', 'COMPLETED')) THEN
     SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'PDA拣货任务状态只允许完成';