refactor: use dot notation for table name config (schema.table instead of schema_table)

Replace underscore-based table name splitting with dot-based splitting
to match the standard schema.tablename format, removing MySQL compatibility.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/user/CONFIG_FILE_LOCATION.md

@@ -180,7 +180,7 @@ validation:
 
 # 订单号解析配置
 orderResolution:
-  tableName: 'productionContractData_26 年压力表合同数据'
+  tableName: 'ERPAuto.vw_productionContractData'
   productionIdField: '总排号'
   orderNumberField: '生产订单号'
 ```