feat: Add multi-table Excel upload functionality

- Implemented new API endpoints for multi-table Excel upload and auto-detection of table chains.
- The GET endpoint `/api/data/multi-table/auto-detect` allows automatic detection of foreign key relationships based on the provided root table.
- The POST endpoint `/api/data/multi-table/upload` handles the upload of multi-table data, including validation and logging of the upload process.
- Updated the frontend to include options for multi-table Excel upload in the button configuration panel and integrated the corresponding action handler.

This feature enhances the data management capabilities by allowing users to upload and manage data across multiple related tables efficiently.

frontend/components/screen/config-panels/ButtonConfigPanel.tsx

@@ -851,6 +851,7 @@ export const ButtonConfigPanel: React.FC<ButtonConfigPanelProps> = ({
             {/* 엑셀 관련 */}
             <SelectItem value="excel_download">엑셀 다운로드</SelectItem>
             <SelectItem value="excel_upload">엑셀 업로드</SelectItem>
+            <SelectItem value="multi_table_excel_upload">다중 테이블 엑셀 업로드</SelectItem>
 
             {/* 고급 기능 */}
             <SelectItem value="quickInsert">즉시 저장</SelectItem>
@@ -2430,6 +2431,8 @@ export const ButtonConfigPanel: React.FC<ButtonConfigPanelProps> = ({
         />
       )}
 
+      {/* 다중 테이블 엑셀 업로드: 설정 불필요 (버튼 클릭 시 화면 테이블에서 자동 감지) */}
+
       {/* 바코드 스캔 액션 설정 */}
       {localInputs.actionType === "barcode_scan" && (
         <div className="bg-muted/50 mt-4 space-y-4 rounded-lg border p-4">
@@ -3997,8 +4000,8 @@ export const ButtonConfigPanel: React.FC<ButtonConfigPanelProps> = ({
         )}
       </div>
 
-      {/* 제어 기능 섹션 - 엑셀 업로드가 아닐 때만 표시 */}
-      {localInputs.actionType !== "excel_upload" && (
+      {/* 제어 기능 섹션 - 엑셀 업로드 계열이 아닐 때만 표시 */}
+      {localInputs.actionType !== "excel_upload" && localInputs.actionType !== "multi_table_excel_upload" && (
         <div className="border-border mt-8 border-t pt-6">
           <ImprovedButtonControlConfigPanel component={component} onUpdateProperty={onUpdateProperty} />
         </div>
@@ -4687,3 +4690,4 @@ const ExcelUploadConfigSection: React.FC<{
     </div>
   );
 };
+