I'd like to use Listings to present specific content on a page based on either category or tag (I'll use which ever is easier to implement).  
I can almost get there today -- with `categories: true` as a site visitor I can click on a category and see my filtered list of content, however, I don't want this to be a site visitor action, as the site author I want to only show certain content based on tag. 

Ultimately I want to have a page with multiple listings, each listing defined by category.
dragonstyle
2022-09-23T14:11:20Z
kmasiello
v1.3
closed
Website listings - filter by category
https://github.com/quarto-dev/quarto-cli/issues/2577