테넌트 import 규칙 개선

adminfront/src/features/tenants/utils/tenantCsvImport.test.ts

@@ -150,6 +150,27 @@ describe("tenantCsvImport", () => {
     expect(csv).not.toContain("local-tenant-id");
   });
 
+
+  it("preserves source tenant_id when a create resolution does not override it", () => {
+    const exportedTenantId = "11111111-2222-4333-8444-555555555555";
+    const rows = parseTenantCSV(
+      `tenant_id,name,type,parent_tenant_id,parent_tenant_slug,slug,memo,email_domain
+${exportedTenantId},Tenant With UUID,COMPANY,,,tenant-with-uuid,Memo,tenant-with-uuid.example.com
+`,
+    );
+    const preview = buildTenantImportPreview(rows, tenants);
+    const csv = serializeTenantImportCSV(preview, {
+      2: {
+        mode: "create",
+        slug: "tenant-with-uuid",
+      },
+    });
+
+    expect(csv).toContain(
+      `${exportedTenantId},Tenant With UUID,COMPANY,,,tenant-with-uuid,Memo,tenant-with-uuid.example.com`,
+    );
+  });
+
   it("remaps child parent_tenant_id from source ids to selected staging ids", () => {
     const rows = parseTenantCSV(
       [