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

frontend/src/lib/api.ts

@@ -270,6 +270,14 @@ export const paymentOptionsApi = {
 
 // Media API
 export const mediaApi = {
+  getAll: (relatedType?: string, relatedId?: string) => {
+    const params = new URLSearchParams();
+    if (relatedType) params.set('relatedType', relatedType);
+    if (relatedId) params.set('relatedId', relatedId);
+    const query = params.toString();
+    return fetchApi<{ media: Media[] }>(`/api/media${query ? `?${query}` : ''}`);
+  },
+  
   upload: async (file: File, relatedId?: string, relatedType?: string) => {
     const token = typeof window !== 'undefined' 
       ? localStorage.getItem('spanglish-token') 
@@ -488,6 +496,8 @@ export interface PaymentOptionsConfig {
   cashEnabled: boolean;
   cashInstructions?: string | null;
   cashInstructionsEs?: string | null;
+  // Booking settings
+  allowDuplicateBookings?: boolean;
 }
 
 export interface User {