Fix Rubocop offenses for November 2025

admin/lib/solidus_admin/testing_support/admin_assets.rb

@@ -3,7 +3,9 @@
 RSpec.configure do |config|
   config.when_first_matching_example_defined(solidus_admin: true) do
     config.before(:suite) do
-      system('bin/rails solidus_admin:tailwindcss:build') or abort 'Failed to build Tailwind CSS'
+      # rubocop:disable Rails/Exit
+      system("bin/rails solidus_admin:tailwindcss:build") or abort "Failed to build Tailwind CSS"
+      # rubocop:enable Rails/Exit
       Rails.application.precompiled_assets
     end
   end

core/app/models/spree/payment.rb

@@ -83,7 +83,7 @@ def amount=(amount)
         when String
           separator = I18n.t('number.currency.format.separator')
           number    = amount.delete("^0-9-#{separator}\.").tr(separator, '.')
-          number.to_d if number.present?
+          number.presence&.to_d
         end || amount
     end
 

core/lib/generators/solidus/install/app_templates/authentication/existing.rb

@@ -4,7 +4,9 @@
   user_class.classify.constantize
 rescue NameError
   say_status :error, "Can't find an existing user class named #{user_class.classify}, plese set up one before using this authentication option.", :red
+  # rubocop:disable Rails/Exit
   abort
+  # rubocop:enable Rails/Exit
 end
 
 generate "spree:custom_user #{user_class.shellescape}"

legacy_promotions/app/models/spree/promotion_handler/cart.rb

@@ -61,7 +61,7 @@ def sale_promotions
 
       def promotion_code(promotion)
         order_promotion = order.order_promotions.detect { |op| op.promotion_id == promotion.id }
-        order_promotion.present? ? order_promotion.promotion_code : nil
+        order_promotion.presence&.promotion_code
       end
 
       def promotion_includes