feat: Implement complete ticket purchasing flow with new TicketsController │

│
- Create new TicketsController with actions for name collection, creation, and checkout                                                                                                                                                                   │
- Add dedicated ticket views (new.html.erb, checkout.html.erb, show.html.erb)                                                                                                                                                                             │
- Update ticket_selection_controller.js to handle form submission via AJAX                                                                                                                                                                                │
- Add store_cart endpoint in EventsController for session-based cart management                                                                                                                                                                           │
- Update routes to support new ticket flow: /tickets/new, /create, /checkout                                                                                                                                                                              │
- Fix attribute name consistency across views (title→name, starts_at→start_time)                                                                                                                                                                          │
- Add Stripe checkout integration with proper error handling                                                                                                                                                                                              │
- Remove deprecated collect_names flow in favor of streamlined approach                                                                                                                                                                                   │
                                                                                                                                                                                                                                                          │
The flow is now: Event selection → AJAX cart storage → Name collection → Checkout → Payment

bin/debug_stripe_config.rb

@@ -0,0 +1,19 @@
+#!/usr/bin/env ruby
+
+# Test script to verify Stripe configuration in controller context
+puts "Testing Stripe configuration..."
+puts "Rails.application.config.stripe:"
+puts Rails.application.config.stripe.inspect
+
+puts "\nChecking secret_key:"
+secret_key = Rails.application.config.stripe[:secret_key]
+puts "Secret key present: #{secret_key.present?}"
+puts "Secret key length: #{secret_key.length if secret_key.present?}"
+
+puts "\nChecking publishable_key:"
+publishable_key = Rails.application.config.stripe[:publishable_key]
+puts "Publishable key present: #{publishable_key.present?}"
+
+puts "\nChecking signing_secret:"
+signing_secret = Rails.application.config.stripe[:signing_secret]
+puts "Signing secret present: #{signing_secret.present?}"