Email queue + async sending; legal settings and placeholders

- Add in-memory email queue with rate limiting (MAX_EMAILS_PER_HOUR)
- Bulk send to event attendees now queues and returns immediately
- Frontend shows 'Emails are being sent in the background'
- Legal pages, settings, and placeholders updates

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/index.ts

@@ -21,8 +21,10 @@ import paymentOptionsRoutes from './routes/payment-options.js';
 import dashboardRoutes from './routes/dashboard.js';
 import siteSettingsRoutes from './routes/site-settings.js';
 import legalPagesRoutes from './routes/legal-pages.js';
+import legalSettingsRoutes from './routes/legal-settings.js';
 import faqRoutes from './routes/faq.js';
 import emailService from './lib/email.js';
+import { initEmailQueue } from './lib/emailQueue.js';
 
 const app = new Hono();
 
@@ -1856,6 +1858,7 @@ app.route('/api/payment-options', paymentOptionsRoutes);
 app.route('/api/dashboard', dashboardRoutes);
 app.route('/api/site-settings', siteSettingsRoutes);
 app.route('/api/legal-pages', legalPagesRoutes);
+app.route('/api/legal-settings', legalSettingsRoutes);
 app.route('/api/faq', faqRoutes);
 
 // 404 handler
@@ -1871,6 +1874,9 @@ app.onError((err, c) => {
 
 const port = parseInt(process.env.PORT || '3001');
 
+// Initialize email queue with the email service reference
+initEmailQueue(emailService);
+
 // Initialize email templates on startup
 emailService.seedDefaultTemplates().catch(err => {
   console.error('[Email] Failed to seed templates:', err);