Add account hierarchy framework with migrations, RLS policies, and UI components

apps/e2e/tests/newsletter.spec.ts

@@ -4,7 +4,9 @@
 import { test, expect } from '@playwright/test';
 
 test.describe('Newsletter', () => {
-  test('create campaign, select recipients from members, preview, send', async ({ page }) => {
+  test('create campaign, select recipients from members, preview, send', async ({
+    page,
+  }) => {
     // Create newsletter
     // Add recipients from member filter (status=active, hasEmail=true)
     // Preview with variable substitution