import { describe, expect, it, vi } from "vitest"; vi.mock("@expo/ui/swift-ui", () => ({  HStack: "HStack",  Spacer: "Spacer",  Text: "Text",  VStack: "VStack",})); vi.mock("@expo/ui/swift-ui/modifiers", () => ({  font: (value: unknown) => value,  foregroundStyle: (value: unknown) => value,  lineLimit: (value: unknown) => value,  padding: (value: unknown) => value,})); vi.mock("expo-widgets", () => ({  createLiveActivity: vi.fn((name: string, layout: unknown) => ({ layout, name })),})); import { AgentActivity, type AgentActivityProps } from "./AgentActivity"; const props = {  title: "T3 Code",  subtitle: "Agent work in progress",  activeCount: 1,  updatedAt: "2026-05-25T13:07:00.000Z",  activities: [],} satisfies AgentActivityProps; const environment = {  colorScheme: "dark",  isLuminanceReduced: false,} as const; describe("AgentActivity widget layout", () => {  it("formats its updated-at label without app-runtime helper references", () => {    expect(JSON.stringify(AgentActivity(props, environment as never))).toContain(      '"children":["Updated ","1:07"]',    );    expect(AgentActivity.toString()).not.toContain("formatAgentActivityUpdatedAtLabel");  });   it("uses now when the updated-at timestamp is malformed", () => {    expect(      JSON.stringify(AgentActivity({ ...props, updatedAt: "not-a-date" }, environment as never)),    ).toContain('"children":["Updated ","now"]');  });});