apiserver的showtable接口，没有partition的信息

## Expected Behavior
请在返回结果中添加partition的信息

Find the apiserver's showtable interface in the codebase, likely in a file handling API endpoints or table metadata. Examine the current response structure and locate where partition information is stored in the database. Modify the interface to include this data in the return JSON. Test by calling the updated endpoint to verify partition details are present.

Written by the indexing model from the issue text.