test(auth): warm the Welcome import once so the first case cannot time out under load

frontend/src/components/authCardStates.dom.test.tsx

@@ -7,7 +7,7 @@
 //
 // entryUrl snapshots window.location at IMPORT time, so the access-notice cases reset the module
 // registry and set the URL before importing — that is the behaviour under test, not a workaround.
-import { describe, it, expect, afterEach, vi } from "vitest";
+import { describe, it, expect, afterEach, beforeAll, vi } from "vitest";
 import { render, screen, fireEvent, cleanup, act } from "@testing-library/react";
 import type { VerifyEntry } from "../lib/useVerifyEntry";
 
@@ -18,6 +18,13 @@ const noVerify: VerifyEntry = {
   dismiss: () => {},
 };
 
+// Every case re-imports the whole Welcome tree after a module reset. The FIRST import also transforms
+// it, which under the full suite's parallel load ran past the 5 s test timeout (E32 S2, gate flake).
+// Transforms survive resetModules, so warming them once here leaves each case only the evaluation.
+beforeAll(async () => {
+  await import("./Welcome");
+}, 60_000);
+
 afterEach(() => {
   cleanup();
   vi.resetModules();