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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: krassowski

test/e2e/helpers.ts

@@ -125,8 +125,9 @@ export async function runFirstNotebookCell(
     .catch(() => undefined);
   await lab.waitForFunction(
     () => {
-      const text =
-        document.querySelector('#jp-main-statusbar')?.textContent ?? '';
+      const el = document.querySelector('#jp-main-statusbar');
+      const text = el?.textContent ?? '';
+      if (!el || text.trim().length === 0) return false;
       return !['Connecting', 'Initializing', 'Starting'].some(s =>
         text.includes(s)
       );

test/e2e/smoke.test.ts

@@ -67,6 +67,7 @@ test('an electronAPI channel round-trips to the main process', async () => {
   const { app, userDataDir, jupyterDir } = await launchApp();
   try {
     const welcome = await pageByTitle(app, /welcome/i);
+    await welcome.waitForLoadState('domcontentloaded');
     const isDark = await welcome.evaluate(() =>
       ((window as unknown) as {
         electronAPI: { isDarkTheme(): Promise<boolean> };