Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/models/enterprise/conversation.rb

@@ -0,0 +1,16 @@
+module Enterprise::Conversation
+  def list_of_keys
+    super + %w[sla_policy_id]
+  end
+
+  # Include select additional_attributes keys (call related) for update events
+  def allowed_keys?
+    return true if super
+
+    attrs_change = previous_changes['additional_attributes']
+    return false unless attrs_change.is_a?(Array) && attrs_change[1].is_a?(Hash)
+
+    changed_attr_keys = attrs_change[1].keys
+    changed_attr_keys.intersect?(%w[call_status])
+  end
+end