Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/jobs/notification/remove_duplicate_notification_job.rb

@@ -0,0 +1,17 @@
+class Notification::RemoveDuplicateNotificationJob < ApplicationJob
+  queue_as :default
+
+  def perform(notification)
+    return unless notification.is_a?(Notification)
+
+    user_id = notification.user_id
+    primary_actor_id = notification.primary_actor_id
+
+    # Find older notifications with the same user and primary_actor_id
+    duplicate_notifications = Notification.where(user_id: user_id, primary_actor_id: primary_actor_id)
+                                          .order(created_at: :desc)
+
+    # Skip the first one (the latest notification) and destroy the rest
+    duplicate_notifications.offset(1).each(&:destroy)
+  end
+end