Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/jobs/auto_assignment/assignment_job.rb

@@ -0,0 +1,22 @@
+class AutoAssignment::AssignmentJob < ApplicationJob
+  queue_as :default
+
+  def perform(inbox_id:)
+    inbox = Inbox.find_by(id: inbox_id)
+    return unless inbox
+
+    service = AutoAssignment::AssignmentService.new(inbox: inbox)
+
+    assigned_count = service.perform_bulk_assignment(limit: bulk_assignment_limit)
+    Rails.logger.info "Assigned #{assigned_count} conversations for inbox #{inbox.id}"
+  rescue StandardError => e
+    Rails.logger.error "Bulk assignment failed for inbox #{inbox_id}: #{e.message}"
+    raise e if Rails.env.test?
+  end
+
+  private
+
+  def bulk_assignment_limit
+    ENV.fetch('AUTO_ASSIGNMENT_BULK_LIMIT', 100).to_i
+  end
+end