fix(i18n): preserve inherited-name labels as untranslated data

job-tracker-ui/src/application-intelligence.test.tsx

@@ -78,6 +78,12 @@ const match = {
 
 beforeEach(() => jest.clearAllMocks());
 
+test.each(["constructor", "toString", "__proto__"])("timeline preserves unknown category %s as a label", async category => {
+  mockedApi.get.mockResolvedValue({ data: { ...timeline, categories: ["stage", category] } } as any);
+  render(<ApplicationTimeline jobId={7} />);
+  expect(await screen.findByRole("button", { name: category })).toBeInTheDocument();
+});
+
 // ---------- Timeline ----------
 
 test("timeline renders grouped days, milestones and readable summaries", async () => {