Breadcrumbs support for pages in listings

[dragonstyle]

If a page appears as a child of a listing, it would be nice if the breadcrumbs would appear with it as a child of the listing page in the tree.

e.g.

I really enjoy the breadcrumb path in the search results. Is there any way to provide a path for pages which are not explicitly included in the sidebar navigation? For example, I am using listings to enumerate 100+ pages. Each of those pages are separately included in the search index (yay!). The results do not include a breadcrumb, even though the listing sub-pages are “owned” by the page that enumerates and links to each of those sub-pages. Is there a way to provide a search breadcrumb path when there is no explicit nav? Listings are nav-adjacent.

[cscheid]

We should do a mini-epic on breadcrumbs more generally.