feat: generate dispatch BOL PDFs

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

@@ -513,6 +513,21 @@ paths:
       security: [{ bearerAuth: [] }]
       parameters: [{ name: dispatchNo, in: path, required: true, schema: { type: string } }]
       responses: { '200': { description: 取消成功或已取消 }, '404': { description: 排车单不存在 }, '409': { description: 排车已开始执行 } }
+  /api/platform/v1/last-leg/dispatches/{dispatchNo}/prints/bol:
+    get:
+      summary: 生成排车 BOL PDF
+      description: 权限 platform:overseas-warehouse:dispatch:list；服务端按目的 FBA 仓分组并分页生成固定 A4 PDF，浏览器不直接访问内部打印服务。
+      security: [{ bearerAuth: [] }]
+      parameters: [{ name: dispatchNo, in: path, required: true, schema: { type: string } }]
+      responses:
+        '200':
+          description: BOL PDF
+          headers:
+            Content-Disposition: { schema: { type: string } }
+            X-Print-Page-Count: { schema: { type: integer, minimum: 1 } }
+          content: { application/pdf: { schema: { type: string, format: binary } } }
+        '404': { description: 排车单不存在 }
+        '422': { description: 排车单没有可打印的 BOL 明细 }
   /api/platform/v1/last-leg/dispatches/candidates:
     get:
       summary: 查询智能排车候选托盘