✨ 合同结算币种联动计费与运单计价单位，并完善合同与派车交互

结算币种驱动计费单价单位及运单/计划/总单计价单位；同步合同编号预览、部门前缀配置、派车备注与查看弹窗等交互优化。

Co-authored-by: Cursor <cursoragent@cursor.com>

src/api/business/contract-manage.js

@@ -90,3 +90,11 @@ export const expireStats = params =>
     method: 'get',
     params,
   });
+
+/** 按合同负责部门预览下一合同编号 */
+export const nextContractNo = organizationId =>
+  request({
+    url: `${baseUrl}/next-contract-no`,
+    method: 'get',
+    params: { organizationId },
+  });