the extension is not activated for all MediaWiki-based sites

[falcondai]

including:

• other sites operated by Wikimedia foundations, e.g. https://www.mediawiki.org
• generic sites using MediaWiki CMS, e.g. https://wiki.archlinux.org/

[falcondai]

looking into using some optional permission to allow for more comprehensive injection (and page action)

MediaWiki CMS can be detected via HTML markup such as <meta name="generator" content="MediaWiki 1.21.1">