feat: Track 打通已完成/已入库/已出库状态闭环与外部联动

- 完工转交入库同步 status=COMPLETED;MOM 入库/出库回调同步 status
- 新增 mom-outbound webhook(发货出库标记已出库),lookup 返回 material_id
- VALID_OVERALL_STATUS 新增已出库;update_overall_status 同步 status 字段
- WIP 矩阵区分已入库/待仓库收货;虚拟节点正确处理已出库/转入在库人

backend/app/api/v1/router.py

@@ -14,6 +14,8 @@ from app.api.v1.endpoints.notifications import router as notifications_router
 from app.api.v1.endpoints.app_version import router as app_version_router
 from app.api.v1.endpoints.analytics import router as analytics_router
 from app.api.v1.endpoints.holidays import router as holidays_router
+from app.api.v1.endpoints.webhooks import router as webhooks_router
+from app.api.v1.endpoints.external_products import router as external_products_router
 
 api_router = APIRouter()
 
@@ -31,3 +33,5 @@ api_router.include_router(notifications_router)
 api_router.include_router(app_version_router)
 api_router.include_router(analytics_router)
 api_router.include_router(holidays_router)
+api_router.include_router(webhooks_router)
+api_router.include_router(external_products_router)