Making [[Image:*.djvu]] a red link pointing to
Special:upload as we
currently do is clearly wrong.
What's that got to do with anything?
This would be a bug fixed with using Image: to visualize.
The fact that image links to nonexistent files create a red link to
Special:Upload was a feature I introduced. It was intended to be a simpler
way to upload files, similar to the way you create articles.