feat: add shared child batch creation

LianSyn-platform/external-agent-client.test.mjs

@@ -16,6 +16,7 @@ import {
   parseJsonObject,
   parseSseBlock,
   validateAgentOperation,
+  validateProgramOperation,
   validateStandardOperation
 } from './external-agent-client.mjs';
 import { createBusinessServer } from './server.mjs';
@@ -1464,6 +1465,25 @@ describe('SSE and result helpers', () => {
     assert.doesNotMatch(message, /TEST-202609|test_context|server_response|native_request|requery|fresh|write_attempted|DoInfo|allowlist/);
   });
 
+  it('keeps shared-child batch creation Program-only and outside the external Agent router', () => {
+    const operation = {
+      action: 'shared_child_order_batch_create',
+      order_nature: 'formal',
+      submit_mode: 'dry_run',
+      data: {
+        customer: { name: '合成客户', keyword: '合成客户' },
+        product: { name: '合成产品', keyword: '合成产品' },
+        leader: { name: '测试领队', keyword: '测试领队' },
+        recurrence: { start_date: '2026-10-06', end_date: '2026-11-03' },
+        passenger_counts: { adult: 20, leader: 1 }
+      }
+    };
+    assert.match(validateAgentOperation(operation).join('\n'), /当前 18 类业务/);
+    assert.deepEqual(validateProgramOperation(operation), []);
+    assert.deepEqual(validateStandardOperation(operation), []);
+    assert.equal(STANDARD_DIRECTIVE_ROUTES.some((route) => route.includes('散拼团多个新增子单')), false);
+  });
+
   it('pins the optional other/filing fields in the per-task guidance', () => {
     const message = buildParserMessage({
       rawText: '安排其他/备案\n团号：LW-260903-A\n业务日期：09-03\n结算单位搜索：美女',