fix: getColumnInputTypes가 column_labels 테이블 조회하도록 수정

- 기존: table_type_columns 테이블 조회 (잘못된 테이블)
- 수정: column_labels 테이블 조회 (올바른 테이블)
- 이제 테이블 관리에서 설정한 input_type이 정확하게 반영됨

backend-node/src/services/tableManagementService.ts

@@ -2980,20 +2980,20 @@ export class TableManagementService {
     try {
       logger.info(`컬럼 입력타입 정보 조회: ${tableName}`);
 
-      // table_type_columns에서 입력타입 정보 조회
+      // column_labels에서 입력타입 정보 조회
       const rawInputTypes = await query<any>(
         `SELECT 
-          ttc.column_name as "columnName",
-          ttc.column_name as "displayName",
-          COALESCE(ttc.input_type, 'text') as "inputType",
-          COALESCE(ttc.detail_settings, '{}') as "detailSettings",
-          ttc.is_nullable as "isNullable",
+          cl.column_name as "columnName",
+          cl.column_label as "displayName",
+          COALESCE(cl.input_type, 'text') as "inputType",
+          '{}'::jsonb as "detailSettings",
+          ic.is_nullable as "isNullable",
           ic.data_type as "dataType"
-        FROM table_type_columns ttc
+        FROM column_labels cl
         LEFT JOIN information_schema.columns ic 
-          ON ttc.table_name = ic.table_name AND ttc.column_name = ic.column_name
-        WHERE ttc.table_name = $1
-        ORDER BY ttc.display_order, ttc.column_name`,
+          ON cl.table_name = ic.table_name AND cl.column_name = ic.column_name
+        WHERE cl.table_name = $1
+        ORDER BY cl.column_name`,
         [tableName]
       );