파일 업로드 회사별로 보이도록 수정

frontend/lib/api/file.ts

@@ -42,6 +42,7 @@ export const uploadFiles = async (params: {
   autoLink?: boolean;
   columnName?: string;
   isVirtualFileColumn?: boolean;
+  companyCode?: string; // 🔒 멀티테넌시: 회사 코드
 }): Promise<FileUploadResponse> => {
   const formData = new FormData();
 
@@ -64,6 +65,7 @@ export const uploadFiles = async (params: {
   if (params.autoLink !== undefined) formData.append("autoLink", params.autoLink.toString());
   if (params.columnName) formData.append("columnName", params.columnName);
   if (params.isVirtualFileColumn !== undefined) formData.append("isVirtualFileColumn", params.isVirtualFileColumn.toString());
+  if (params.companyCode) formData.append("companyCode", params.companyCode); // 🔒 멀티테넌시
 
   const response = await apiClient.post("/files/upload", formData, {
     headers: {