feat: Enhance user dashboard and order management

- Add orders index action to OrdersController with pagination support
- Simplify dashboard to focus on user orders and actions
- Redesign order show page with improved layout and ticket access
- Remove complex event metrics in favor of streamlined order management
- Add direct links to ticket downloads and better order navigation
- Improve responsive design and user experience across order views

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/controllers/orders_controller.rb

@@ -97,6 +97,14 @@ class OrdersController < ApplicationController
     redirect_to event_order_new_path(@event.slug, @event.id)
   end
 
+  # Display all user orders
+  def index
+    @orders = current_user.orders.includes(:event, tickets: :ticket_type)
+                                 .where(status: [ "paid", "completed" ])
+                                 .order(created_at: :desc)
+                                 .page(params[:page])
+  end
+
   # Display order summary
   #
   #