feat: add shared child batch creation

samples/business-parser-gold-corpus.json

@@ -1,7 +1,7 @@
 {
-  "version": "ltjt-program-parser-v1.0.6",
+  "version": "ltjt-program-parser-v1.0.7",
   "received_at": "2026-08-25T09:00:00+08:00",
-  "description": "脱敏的 18 路由确定性解析 gold corpus；只包含合成业务值。",
+  "description": "脱敏的 19 路由确定性解析 gold corpus；只包含合成业务值。",
   "cases": [
     {
       "id": "official-team-order-create",
@@ -31,6 +31,13 @@
       "expected_action": "shared_child_order_create",
       "input": "散拼团单个新增子单\n预订客户：合成客户乙\n出发日期：2026-09-15\n产品名称：合成产品丙\n领队：测试领队\n人数：15+1"
     },
+    {
+      "id": "official-shared-child-batch-create",
+      "route_id": "shared_child_order_batch_create",
+      "expected_status": "agent_parse_passed",
+      "expected_action": "shared_child_order_batch_create",
+      "input": "散拼团多个新增子单\n预订客户：合成客户乙\n出发日期：10-06到11-03\n产品名称：合成产品丙\n领队：测试领队\n人数：20+1"
+    },
     {
       "id": "official-passenger-independent",
       "route_id": "passenger_list_import_independent",