it can trivially be generated from it

the object that contains he asset is content adressable, it is a
unique identifier

* clone_url can be re-created from the forge url
* project_id is redundant with repo_name

they are redundant because they can be re-created from the context

* the owner is a parent of the project
* clone_url is composed of the forge URL
* original_url is redundant with the id mapping

* they are objects, children of the comment
* embeding objects which are references to a blob within a comment
  is impractical because it is JSON

there are two issues in having the issue index as part of the comment

* it is redundant because the comment is a child of an issue
* a comment may be the child of something that is not an issue such as
  a review

it would be a breaking change