refactor: prepare for free ticket

app/controllers/orders_controller.rb

@@ -126,6 +126,15 @@ class OrdersController < ApplicationController
     @total_amount = @order.total_amount_cents
     @expiring_soon = @order.expiring_soon?
 
+    # For free orders, automatically mark as paid and redirect to success
+    if @order.free?
+      @order.mark_as_paid!
+      session.delete(:pending_cart)
+      session.delete(:ticket_names)
+      session.delete(:draft_order_id)
+      return redirect_to order_path(@order), notice: "Vos billets gratuits ont été confirmés !"
+    end
+
     # Create Stripe checkout session if Stripe is configured
     if Rails.application.config.stripe[:secret_key].present?
       begin