docs: update user menu development rules

- Added critical guidelines prohibiting the direct coding of user menu screens in React (.tsx) files, emphasizing the use of the low-code screen designer system.
- Outlined the correct implementation steps for user menus, including the registration of screens in the `screen_definitions` and `screen_layouts_v2` tables, and the necessity of menu registration in `menu_info`.
- Highlighted prohibited patterns to prevent hardcoding user interface components, ensuring adherence to the established rendering system.

Made-with: Cursor

backend-node/src/controllers/entitySearchController.ts

@@ -266,7 +266,6 @@ export async function getDistinctColumnValues(req: AuthenticatedRequest, res: Re
     logger.info("컬럼 DISTINCT 값 조회 성공", {
       tableName,
       columnName,
-      columnInputType: columnInputType || "none",
       labelColumn: effectiveLabelColumn,
       companyCode,
       hasFilters: !!filtersParam,