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/db/migrate.ts

@@ -216,6 +216,11 @@ async function migrate() {
       )
     `);
 
+    // Add allow_duplicate_bookings column to payment_options if it doesn't exist
+    try {
+      await (db as any).run(sql`ALTER TABLE payment_options ADD COLUMN allow_duplicate_bookings INTEGER NOT NULL DEFAULT 0`);
+    } catch (e) { /* column may already exist */ }
+
     // Event payment overrides table
     await (db as any).run(sql`
       CREATE TABLE IF NOT EXISTS event_payment_overrides (
@@ -497,6 +502,11 @@ async function migrate() {
       )
     `);
 
+    // Add allow_duplicate_bookings column to payment_options if it doesn't exist
+    try {
+      await (db as any).execute(sql`ALTER TABLE payment_options ADD COLUMN allow_duplicate_bookings INTEGER NOT NULL DEFAULT 0`);
+    } catch (e) { /* column may already exist */ }
+
     await (db as any).execute(sql`
       CREATE TABLE IF NOT EXISTS event_payment_overrides (
         id UUID PRIMARY KEY,

backend/src/db/schema.ts

@@ -135,6 +135,8 @@ export const sqlitePaymentOptions = sqliteTable('payment_options', {
   cashEnabled: integer('cash_enabled', { mode: 'boolean' }).notNull().default(true),
   cashInstructions: text('cash_instructions'),
   cashInstructionsEs: text('cash_instructions_es'),
+  // Booking settings
+  allowDuplicateBookings: integer('allow_duplicate_bookings', { mode: 'boolean' }).notNull().default(false),
   // Metadata
   updatedAt: text('updated_at').notNull(),
   updatedBy: text('updated_by').references(() => sqliteUsers.id),
@@ -369,6 +371,7 @@ export const pgPaymentOptions = pgTable('payment_options', {
   cashEnabled: pgInteger('cash_enabled').notNull().default(1),
   cashInstructions: pgText('cash_instructions'),
   cashInstructionsEs: pgText('cash_instructions_es'),
+  allowDuplicateBookings: pgInteger('allow_duplicate_bookings').notNull().default(0),
   updatedAt: timestamp('updated_at').notNull(),
   updatedBy: uuid('updated_by').references(() => pgUsers.id),
 });