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

app/views/events/index.html.erb

@@ -55,7 +55,14 @@
         >
           <% if event.image.present? %>
             <div class="h-48 overflow-hidden">
-              <%= image_tag event.image, class: "w-full h-full object-cover" %>
+              <%= link_to event_path(event.slug, event) do %>
+                <img
+                  src="<%= event.image %>"
+                  alt="<%= event.name %>"
+                  class="featured-event-image"
+                  data-featured-event-target="animated"
+                >
+              <% end %>
             </div>
           <% else %>
             <div