feat(adminfront): add Data Management menu to User tab

This commit introduces a 'Data Management' dropdown menu to the User list page, consolidating user CSV import, template download, and export actions. It aligns the UI with the existing Tenant list page.

adminfront/src/features/users/components/UserBulkUploadModal.tsx

@@ -18,6 +18,7 @@ import {
   DialogTitle,
   DialogTrigger,
 } from "../../../components/ui/dialog";
+import { DropdownMenuItem } from "../../../components/ui/dropdown-menu";
 import { ScrollArea } from "../../../components/ui/scroll-area";
 import {
   type BulkUserItem,
@@ -121,6 +122,22 @@ function hanmacEmailStatusClass(preview?: HanmacImportEmailPreview) {
   return "text-muted-foreground";
 }
 
+export const downloadUserTemplate = () => {
+  const headers =
+    "email,name,phone,role,tenant_slug,department,grade,position,jobTitle,employee_id,tenant_slug1,department1,grade1,position1,jobTitle1,employee_id1";
+  const example =
+    "user1@example.com,홍길동,010-1234-5678,user,tenant-slug,개발팀,수석,팀장,프론트엔드,EMP001,second-tenant,센터,책임,,Architecture,EMP002";
+  const blob = new Blob([`${headers}\n${example}`], {
+    type: "text/csv;charset=utf-8;",
+  });
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement("a");
+  a.href = url;
+  a.download = "user_bulk_template.csv";
+  a.click();
+  URL.revokeObjectURL(url);
+};
+
 export function UserBulkUploadModal({
   onSuccess,
   variant = "button",
@@ -334,16 +351,14 @@ export function UserBulkUploadModal({
 
   const triggerNode =
     variant === "dropdown" ? (
-      <div
-        className="relative flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none transition-colors hover:bg-accent hover:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50"
-        role="menuitem"
-        tabIndex={-1}
+      <DropdownMenuItem
         onClick={() => setOpen(true)}
+        className="cursor-pointer"
         {...triggerProps}
       >
         <Upload size={16} className="mr-2 opacity-50" />
         {t("ui.admin.users.list.bulk_import", "일괄 등록 (CSV)")}
-      </div>
+      </DropdownMenuItem>
     ) : (
       <DialogTrigger asChild>
         <Button variant="outline" className="gap-2" {...triggerProps}>