Initial commit: Add logistics and order_detail message types

- Add Logistics component with progress tracking
- Add OrderDetail component for order information
- Support data-driven steps and actions
- Add blue color scale to widget SCSS
- Fix node overflow and progress bar rendering issues
- Add English translations for dashboard components

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

spec/services/notification/email_notification_service_spec.rb

@@ -0,0 +1,72 @@
+require 'rails_helper'
+
+describe Notification::EmailNotificationService do
+  let(:account) { create(:account) }
+  let(:agent) { create(:user, account: account, confirmed_at: Time.current) }
+  let(:conversation) { create(:conversation, account: account) }
+  let(:notification) { create(:notification, notification_type: :conversation_creation, user: agent, account: account, primary_actor: conversation) }
+  let(:mailer) { double }
+  let(:mailer_action) { double }
+
+  before do
+    # Setup notification settings for the agent
+    notification_setting = agent.notification_settings.find_by(account_id: account.id)
+    notification_setting.selected_email_flags = [:email_conversation_creation]
+    notification_setting.save!
+  end
+
+  describe '#perform' do
+    context 'when notification is read' do
+      before do
+        notification.update!(read_at: Time.current)
+      end
+
+      it 'does not send email' do
+        expect(AgentNotifications::ConversationNotificationsMailer).not_to receive(:with)
+        described_class.new(notification: notification).perform
+      end
+    end
+
+    context 'when agent is not confirmed' do
+      before do
+        agent.update!(confirmed_at: nil)
+      end
+
+      it 'does not send email' do
+        expect(AgentNotifications::ConversationNotificationsMailer).not_to receive(:with)
+        described_class.new(notification: notification).perform
+      end
+    end
+
+    context 'when agent is confirmed' do
+      before do
+        allow(AgentNotifications::ConversationNotificationsMailer).to receive(:with).and_return(mailer)
+        allow(mailer).to receive(:public_send).and_return(mailer_action)
+        allow(mailer_action).to receive(:deliver_later)
+      end
+
+      it 'sends email' do
+        described_class.new(notification: notification).perform
+        expect(mailer).to have_received(:public_send).with(
+          'conversation_creation',
+          conversation,
+          agent,
+          nil
+        )
+      end
+    end
+
+    context 'when user is not subscribed to notification type' do
+      before do
+        notification_setting = agent.notification_settings.find_by(account_id: account.id)
+        notification_setting.selected_email_flags = []
+        notification_setting.save!
+      end
+
+      it 'does not send email' do
+        expect(AgentNotifications::ConversationNotificationsMailer).not_to receive(:with)
+        described_class.new(notification: notification).perform
+      end
+    end
+  end
+end