feat: PDF ticket generation

- Each ticket has a unique URL for viewing and downloading
- Only the ticket owner can access their ticket
- The customer's name is clearly displayed on the ticket
- The PDF can be downloaded directly from the ticket view page
- All existing functionality continues to work as expected

config/routes.rb

@@ -50,17 +50,18 @@ Rails.application.routes.draw do
     end
   end
 
-  get   "orders/payments/success",      to: "orders#payment_success", as: "order_payment_success"
-  get   "orders/payments/cancel",       to: "orders#payment_cancel",  as: "order_payment_cancel"
+  get   "orders/payments/success", to: "orders#payment_success",  as: "order_payment_success"
+  get   "orders/payments/cancel",  to: "orders#payment_cancel",   as: "order_payment_cancel"
 
-  # Legacy ticket routes - redirect to order system
-  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"
-  get   "payments/success",             to: "tickets#payment_success", as: "payment_success"
-  get   "payments/cancel",              to: "tickets#payment_cancel", as: "payment_cancel"
+  # legacy routes
+  get   "payments/success",        to: "tickets#payment_success", as: "payment_success"
+  get   "payments/cancel",         to: "tickets#payment_cancel",  as: "payment_cancel"
 
   # === Tickets ===
-  get   "tickets/:ticket_id/download", to: "events#download_ticket", as: "download_ticket"
+  get   "tickets/checkout/events/:slug.:id", to: "tickets#checkout", as: "ticket_checkout"
+  post  "tickets/retry/events/:slug.:id",    to: "tickets#retry_payment", as: "ticket_retry_payment"
+  get   "tickets/:ticket_id",                to: "tickets#show", as: "ticket"
+  get   "tickets/:ticket_id/download",       to: "tickets#download_ticket", as: "download_ticket"
 
   # === Promoter Routes ===
   namespace :promoter do