Add full SEO optimization for Spanglish social and language events

- Add comprehensive metadata to root layout with Open Graph, Twitter cards
- Create dynamic sitemap.ts for all pages and events
- Create robots.ts with proper allow/disallow rules
- Add JSON-LD Event structured data to event detail pages
- Add page-specific metadata to events, community, contact, FAQ pages
- Add FAQ structured data schema
- Update footer with local SEO text for Asunción, Paraguay
- Add web manifest for mobile SEO
- Create 404 page with proper noindex
- Optimize image alt text and add lazy loading
- Add NEXT_PUBLIC_SITE_URL env variable
- Add about/ folder to gitignore

backend/src/routes/payment-options.ts

@@ -26,6 +26,8 @@ const updatePaymentOptionsSchema = z.object({
   cashEnabled: z.boolean().optional(),
   cashInstructions: z.string().optional().nullable(),
   cashInstructionsEs: z.string().optional().nullable(),
+  // Booking settings
+  allowDuplicateBookings: z.boolean().optional(),
 });
 
 // Schema for event-level overrides
@@ -75,6 +77,7 @@ paymentOptionsRouter.get('/', requireAuth(['admin']), async (c) => {
         cashEnabled: true,
         cashInstructions: null,
         cashInstructionsEs: null,
+        allowDuplicateBookings: false,
       },
     });
   }