fix: close phase4 overseas acceptance gaps

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

@@ -678,10 +678,10 @@ WHERE (l.fba_warehouse_code IS NULL AND o.fba_warehouse_code IS NOT NULL)
    OR l.destination_type IS NULL OR l.destination_type='' OR l.destination_type='OVERSEAS';
 
 CREATE TABLE IF NOT EXISTS ll_receiving_container_session (
-  id BIGINT NOT NULL COMMENT '柜号签收会话ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户账号标识',
+  id BIGINT NOT NULL COMMENT '柜号签收会话ID', customer_id VARCHAR(128) NOT NULL COMMENT '所选柜解析出的客户标识',
   container_no VARCHAR(64) NOT NULL COMMENT '集装箱号', operator_key VARCHAR(128) NOT NULL COMMENT '操作账号唯一标识',
-  operator_name VARCHAR(255) NULL COMMENT '操作账号名称', active_operator_key VARCHAR(255) NULL COMMENT '未完成会话账号唯一锁键',
-  active_container_key VARCHAR(255) NULL COMMENT '未完成会话柜号唯一锁键', status VARCHAR(32) NOT NULL DEFAULT 'WAIT_SIGN' COMMENT '会话状态：WAIT_SIGN、SIGNED、RECEIVING、COMPLETED',
+  operator_name VARCHAR(255) NULL COMMENT '操作账号名称', active_operator_key VARCHAR(255) NULL COMMENT '未完成会话平台操作账号全局唯一锁键',
+  active_container_key VARCHAR(255) NULL COMMENT '未完成会话柜号全局唯一锁键', status VARCHAR(32) NOT NULL DEFAULT 'WAIT_SIGN' COMMENT '会话状态：WAIT_SIGN、SIGNED、RECEIVING、COMPLETED',
   sign_photos JSON NULL COMMENT '签收卸柜照片角色与文件ID列表', prepared_at DATETIME(3) NULL COMMENT '选择柜号时间',
   signed_at DATETIME(3) NULL COMMENT '签收时间', receiving_at DATETIME(3) NULL COMMENT '首次收货时间',
   completed_at DATETIME(3) NULL COMMENT '完成时间', created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '创建时间',
@@ -709,7 +709,7 @@ CREATE TABLE IF NOT EXISTS ll_receiving_container_operation (
   operator_key VARCHAR(128) NOT NULL COMMENT '操作账号唯一标识', action VARCHAR(32) NOT NULL COMMENT '操作动作', idempotency_key VARCHAR(255) NOT NULL COMMENT '客户端幂等键',
   request_hash VARCHAR(128) NOT NULL COMMENT '请求内容哈希', request_json LONGTEXT NOT NULL COMMENT '请求内容快照', result_json LONGTEXT NOT NULL COMMENT '响应内容快照',
   created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '创建时间', PRIMARY KEY(id),
-  UNIQUE KEY uk_ll_receiving_operation(customer_id,operator_key,idempotency_key), KEY idx_ll_receiving_operation_session(session_id,created_at)
+  UNIQUE KEY uk_ll_receiving_operation(operator_key,idempotency_key), KEY idx_ll_receiving_operation_session(session_id,created_at)
 ) ENGINE=InnoDB COMMENT='海外PDA柜号收货幂等审计记录';
 
 CREATE TABLE IF NOT EXISTS ll_inbound_fba_appointment (

lastleg-service/src/main/resources/openapi/overseas-business-v1.yaml

@@ -6,20 +6,20 @@ paths:
   /api/pda/v1/last-leg/receiving-containers/candidates:
     get:
       summary: 查询当前客户待签收柜号
-      description: 权限 lastleg:pda:operate；客户与操作账号均从 PDA Token 获取，不接收 customerId。
+      description: 权限 lastleg:pda:operate；仅 PLATFORM WAREHOUSE_PICKER 可用，操作账号从 Token 获取，客户由所选柜业务事实唯一解析，不接收 customerId。
       security: [{ bearerAuth: [] }]
       responses: { '200': { description: 柜号候选及箱数进度, content: { application/json: { schema: { $ref: '#/components/schemas/ReceivingCandidateListApiResponse' } } } }, '403': { description: 缺少 PDA 操作权限 } }
   /api/pda/v1/last-leg/receiving-containers/{containerNo}:
     get:
       summary: 查询待签收柜号详情
-      description: 权限 lastleg:pda:operate；返回柜内全部入仓码、目的类型、目的仓、托数和实收进度。
+      description: 权限 lastleg:pda:operate；按柜号唯一解析客户并返回柜内全部入仓码、目的类型、目的仓、托数和实收进度。
       security: [{ bearerAuth: [] }]
       parameters: [{ name: containerNo, in: path, required: true, schema: { type: string } }]
       responses: { '200': { description: 柜号详情, content: { application/json: { schema: { $ref: '#/components/schemas/ReceivingSessionApiResponse' } } } }, '409': { description: 当前账号已锁定其他柜号 } }
   /api/pda/v1/last-leg/receiving-containers/{containerNo}/prepare:
     post:
       summary: 选择当前待签收柜号
-      description: 权限 lastleg:pda:operate；建立 WAIT_SIGN 会话并以账号、柜号双唯一键防止切柜或多人同时处理。
+      description: 权限 lastleg:pda:operate；建立 WAIT_SIGN 会话并以平台操作账号、柜号全局双唯一键防止切柜或多人同时处理。
       security: [{ bearerAuth: [] }]
       parameters: [{ name: containerNo, in: path, required: true, schema: { type: string } }]
       requestBody: { required: true, content: { application/json: { schema: { $ref: '#/components/schemas/ReceivingAction' } } } }