Phase 1+2: Nx workspace with apps, libs, and module boundaries

apps/overlay-e2e/src/example.spec.ts

@@ -0,0 +1,8 @@
+import { test, expect } from '@playwright/test';
+
+test('has title', async ({ page }) => {
+  await page.goto('/');
+
+  // Expect h1 to contain a substring.
+  expect(await page.locator('h1').innerText()).toContain('Welcome');
+});