I'm not sure about the purpose of this bug. Shell access to change the logo is only needed on first customization, or when changing urls (eg. back to [[Image:Wiki.png]] after they were forcefully moved to commons). Once it is set, updates can be done by the community with a reupload.

The idea is to completely automate the checking and standards enforcement that now requires a person. Yes, the community can upload a logo, but if it doesn't conform to the standards set for Wikipedia, this checker would flag it or prohibit the use of the upload and say "this needs to be fixed".

(In reply to comment #2)

The idea is to completely automate the checking and standards enforcement
that now requires a person. Yes, the community can upload a logo, but if it
doesn't conform to the standards set for Wikipedia, this checker would flag it
or prohibit the use of the upload and say "this needs to be fixed".

This seems like a wontfix situation to me.

Currently, there are < 40 Wikipedias (out of 286) with logo issues (missing translation, small violations of logo creation guidelines, weird fonts, lack of SVG).

None of these issues can possibly be checked by an automated tool, I'm therefore closing this as a WONTFIX. Please reopen if necessary (for instance if you'd /really/ want to write a script checking Wikibooks/Wikiquote/Wikisource etc. logos).

A look in the history tells you that it was previously a MediaWiki-bug and frankly, I like the idea avoiding requiring shell-access for the logo, though it would be difficult to implement, I guess and is not super-important (for most users of MediaWiki).