The Janus blog post are not routinely kept up-to-date. And, some of the blog posts detail steps that no longer work. To avoid users attempting to use legacy content and tutorials we should add a banner to all blog posts indicating the content is archived.

In terms of implementation, I'd suggest creating a banner component that can be included in the blog post templates.

We should add some text along the lines of 'As of July 1, 2024, all Janus IDP blogs have been archived and will no longer be updated. Some information in these posts may be outdated and may not work as described.'

For specific tutorials, we can consider referring the users to more up-to-date sources for information - but that can be covered in a separate task.