Knowledge MCP Service

# ELT Migration - Spring Batch Example Minimal scaffold showing how to implement the `TransferCustomerData` job. Run: ```bash cd spring-batch mvn spring-boot:run ``` Notes: - Implement actual `MultiCsvItemReader` to read from `/box/input/Customer_*.csv` and map columns into `CustomerWrapper.originalData`. - Replace placeholder writer logic with `ClassifierCompositeItemWriter` to route valid/invalid records to DB or error CSV. - Configure `application.properties` with SQL Server datasource and MyBatis mapper scanning.