Scaffold demo-gen-0 Next.js showcase

tests/tour.spec.ts

@@ -0,0 +1,7 @@
+import { test, expect } from '@playwright/test';
+
+test('landing renders tour CTA', async ({ page }) => {
+  await page.goto('http://localhost:3000');
+  await expect(page.getByText('Demo Showcase')).toBeVisible();
+  await expect(page.getByText('Tour the Core UI + Operator')).toBeVisible();
+});