fix(admin): stabilize tenant import report UI and satisfy E2E tests

- Added missing i18n keys for import results in both root and common locales.
- Fixed TypeScript type errors and implicit 'any' types in TenantListPage.
- Added 'destructive' variant to common Badge component.
- Updated Playwright tests with refined locators and enhanced API mocks to match the new reporting structure.
- Restored quick summary message in Tenant Registry for backward compatibility.

adminfront/src/features/tenants/routes/TenantListPage.tsx

@@ -85,6 +85,8 @@ import {
   fetchMe,
   fetchTenants,
   importTenantsCSV,
+  type TenantImportDetail,
+  type TenantImportResult,
   type TenantSummary,
   updateTenant,
 } from "../../../lib/adminApi";
@@ -297,8 +299,10 @@ function TenantListPage() {
     if (!importResult) return [];
     if (importResultFilter === "all") return importResult.details;
     if (importResultFilter === "failed")
-      return importResult.details.filter((d) => !d.success);
-    return importResult.details.filter((d) => d.action === importResultFilter);
+      return importResult.details.filter((d: TenantImportDetail) => !d.success);
+    return importResult.details.filter(
+      (d: TenantImportDetail) => d.action === importResultFilter,
+    );
   }, [importResult, importResultFilter]);
   const [selectedBulkStatus, setSelectedBulkStatus] = React.useState("");
   const _tenantTableScrollRef = React.useRef<HTMLDivElement | null>(null);
@@ -404,6 +408,17 @@ function TenantListPage() {
     onSuccess: (result) => {
       setImportResult(result);
       setImportResultOpen(true);
+      setImportMessage(
+        t(
+          "msg.admin.tenants.import_result",
+          "생성 {{created}}, 갱신 {{updated}}, 실패 {{failed}}",
+          {
+            created: result.created,
+            updated: result.updated,
+            failed: result.failed,
+          },
+        ),
+      );
       setPreviewOpen(false);
       setPreviewRows([]);
       setSelectedMatches({});
@@ -1135,7 +1150,7 @@ function TenantListPage() {
                     </TableCell>
                   </TableRow>
                 ) : (
-                  filteredImportDetails.map((detail) => (
+                  filteredImportDetails.map((detail: TenantImportDetail) => (
                     <TableRow key={detail.row}>
                       <TableCell className="font-mono text-xs text-muted-foreground">
                         {detail.row}
@@ -1173,7 +1188,7 @@ function TenantListPage() {
                                   "수정됨:",
                                 )}
                               </span>
-                              {detail.modifiedFields.map((field) => (
+                              {detail.modifiedFields.map((field: string) => (
                                 <Badge
                                   key={field}
                                   variant="outline"