Topic hubs
One product, one hub, kept current
Topic pages (/topic) stitch old content by tag. Hubs grow around one product: install, tutorials, official links, news and FAQ on one URL that search and AI engines can cite.
Why hubs, not just topics
Topic pages fit wide tags like Agents or Open Source. A newly shipped product still needs one citable definition page: what it is, how to install it, official links, and how it differs. That is a hub. The index keeps hubs from living only in the footer.