import { describe, expect, it } from "vite-plus/test"; import { getPreviewPanelMaxWidth } from "./PreviewPanelShell"; describe("getPreviewPanelMaxWidth", () => {  it("allows the panel to use 70% of an ultra-wide viewport without a pixel ceiling", () => {    expect(getPreviewPanelMaxWidth(6_000)).toBe(4_200);  });   it("rounds fractional CSS pixels down", () => {    expect(getPreviewPanelMaxWidth(2_001)).toBe(1_400);  });});