fix(lastleg): route all relabel pickups directly to outbound and verify final schemas

lastleg-service/src/main/resources/db/appointment-work.sql

@@ -1,21 +1,21 @@
 -- DDL proposal only. The coordinator must integrate the approved baseline; do not execute from this task.
 CREATE TABLE IF NOT EXISTS ll_dispatch_appointment_allocation (
-  dispatch_id BIGINT NOT NULL,
-  dispatch_item_id BIGINT NOT NULL,
-  plan_pallet_id BIGINT NOT NULL,
-  batch_key VARCHAR(96) NOT NULL,
-  customer_id VARCHAR(64) NOT NULL,
-  source_key VARCHAR(160) NOT NULL,
-  destination_key VARCHAR(160) NOT NULL,
-  package_count INT NOT NULL,
+  dispatch_id BIGINT NOT NULL COMMENT '排车单标识',
+  dispatch_item_id BIGINT NOT NULL COMMENT '排车明细标识',
+  plan_pallet_id BIGINT NOT NULL COMMENT '入仓计划托盘标识',
+  batch_key VARCHAR(96) NOT NULL COMMENT '预约稳定批次键',
+  customer_id VARCHAR(64) NOT NULL COMMENT '所属客户标识',
+  source_key VARCHAR(160) NOT NULL COMMENT '货物来源稳定键',
+  destination_key VARCHAR(160) NOT NULL COMMENT '目的地稳定键',
+  package_count INT NOT NULL COMMENT '本票分配实物箱数',
   PRIMARY KEY(dispatch_item_id,batch_key,source_key,destination_key),
   KEY idx_dispatch_appointment_batch(batch_key,customer_id),
   KEY idx_dispatch_appointment_dispatch(dispatch_id)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='排车实物与预约批次逐票分配，原执行域事实';
 CREATE TABLE IF NOT EXISTS ll_appointment_work_commitment (
-  entity_key VARCHAR(160) NOT NULL,
+  entity_key VARCHAR(160) NOT NULL COMMENT '原业务实体稳定键',
   state_json LONGTEXT NOT NULL COMMENT '原业务命令产生的只读语义影响基线，不是第二份可编辑计划',
-  impact_version BIGINT NOT NULL DEFAULT 0,
+  impact_version BIGINT NOT NULL DEFAULT 0 COMMENT '承诺影响单调递增版本',
   PRIMARY KEY (entity_key)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='工作事项承诺影响审计基线';
 CREATE TABLE IF NOT EXISTS ll_appointment_work_guard (