feat: Implement payment retry system and draft ticket expiry management

- Add 30-minute expiry window for draft tickets with automatic cleanup
- Implement 3-attempt payment retry mechanism with tracking
- Create background job for cleaning expired draft tickets every 10 minutes
- Add comprehensive UI warnings for expiring tickets and retry attempts
- Enhance dashboard to display pending draft tickets with retry options
- Add payment cancellation handling with smart retry redirections
- Include rake tasks for manual cleanup and statistics
- Add database fields: expires_at, payment_attempts, last_payment_attempt_at, stripe_session_id
- Fix payment attempt counter display to show correct attempt number (1/3, 2/3, 3/3)

config/initializers/ticket_cleanup_scheduler.rb

@@ -0,0 +1,23 @@
+# Schedule regular cleanup of expired draft tickets
+#
+# This will run every 10 minutes to clean up expired draft tickets
+# If you're using a more sophisticated scheduler like sidekiq or whenever,
+# you can move this logic there.
+
+Rails.application.config.after_initialize do
+  # Only run in production and development, not in test
+  unless Rails.env.test?
+    # Schedule the cleanup job to run every 10 minutes
+    Thread.new do
+      loop do
+        begin
+          CleanupExpiredDraftsJob.perform_later
+        rescue => e
+          Rails.logger.error "Failed to schedule expired drafts cleanup: #{e.message}"
+        end
+        
+        sleep 10.minutes
+      end
+    end
+  end
+end

config/routes.rb

@@ -42,6 +42,7 @@ Rails.application.routes.draw do
   get "events/:slug.:id/tickets/new",      to: "tickets#new", as: "ticket_new"
   post "events/:slug.:id/tickets/create",   to: "tickets#create", as: "ticket_create"
   get "events/:slug.:id/tickets/checkout", to: "tickets#checkout", as: "ticket_checkout"
+  post "events/:slug.:id/tickets/retry",    to: "tickets#retry_payment", as: "ticket_retry_payment"
 
   # Payment routes
   get   "payments/success",             to: "tickets#payment_success", as: "payment_success"