Yes, there are several ways to auto-populate a list with the required articles from a knowledge base. One possible solution is to use the Zendesk API to retrieve the list of categories and articles and dynamically generate the sidebar navigation based on the data returned. This would eliminate the need to manually add the href links to the sidebar nav HTML every time a new document is uploaded to the knowledge base.
Another possible solution is to use a third-party plugin or extension that is specifically designed to integrate with Zendesk and provide auto-population of the sidebar navigation. There are several options available, depending on the specific requirements and platform being used.
It's also worth noting that there may be built-in features or settings within the Zendesk platform that can be used to achieve this functionality without the need for custom code or plugins. It may be worth exploring the documentation or reaching out to Zendesk support for guidance on this.