Possible wikitext snippet to transclude a page from the MediaInfo namespace: {{:MediaInfo:M{{PAGEID}}}}. By default this does no transclusion but creates a link, but even this is already useful. We could put this snippet in the Information template and/or make actual transclusion possible.

For the first prototype this can also be a simple tab in the top tab bar, if it turns out actual transclusion is too much of a hassle.

Inverse of T134260: [Task] Link from MediaInfo entity to file description page.