Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/mailers/portal_instructions_mailer.rb

@@ -0,0 +1,41 @@
+class PortalInstructionsMailer < ApplicationMailer
+  def send_cname_instructions(portal:, recipient_email:)
+    return unless smtp_config_set_or_development?
+    return if target_domain.blank?
+
+    @portal = portal
+    @cname_record = generate_cname_record
+
+    send_mail_with_liquid(
+      to: recipient_email,
+      subject: I18n.t('portals.send_instructions.subject', custom_domain: @portal.custom_domain)
+    )
+  end
+
+  private
+
+  def liquid_locals
+    super.merge({ cname_record: @cname_record })
+  end
+
+  def generate_cname_record
+    "#{@portal.custom_domain} CNAME #{target_domain}"
+  end
+
+  def target_domain
+    helpcenter_url = ENV.fetch('HELPCENTER_URL', '')
+    frontend_url = ENV.fetch('FRONTEND_URL', '')
+
+    return extract_hostname(helpcenter_url) if helpcenter_url.present?
+    return extract_hostname(frontend_url) if frontend_url.present?
+
+    ''
+  end
+
+  def extract_hostname(url)
+    uri = URI.parse(url)
+    uri.host
+  rescue URI::InvalidURIError
+    url.gsub(%r{https?://}, '').split('/').first
+  end
+end