Can we hit who didn't run namespacedupes?

<Nikerabbit> I'd like to file a another bug to make absolutely frigging sure that the script is run when new namespace is added

Fixed. The following two pages couldn't be moved:

... 11371140 (0,"Sequence:Cats") -> (104,"Cats") [[Sequence:Cats]]
... * cannot resolve automatically; page exists with ID 11566971 *
... * old title Cats
... * new title Cats/DUPE
... * using suffixed form [[Sequence:Cats/DUPE]] *
... resolving on page... ok.
... 11351901 (0,"Sequence:Test") -> (104,"Test") [[Sequence:Test]]
... * cannot resolve automatically; page exists with ID 11564996 *
... * old title Test
... * new title Test/DUPE
... * using suffixed form [[Sequence:Test/DUPE]] *
... resolving on page... ok.

(In reply to comment #2)

<Nikerabbit> I'd like to file a another bug to make absolutely frigging sure
that the script is run when new namespace is added

This is hard to enforce on the technical level. Namespaces are not added by running a script, but by editing the config and in some cases even by enabling extensions (e.g. LQT).