Long ago, we wrote a ghastly extension FundraisingTranslateWorkflow in order to support special, additional permissions for publishing translations of any page with a title beginning with "Fundraising". Let's generalize this mechanism and move support into Extension:Translate.
Instead of the anchored regex, the workflow could be restricted by namespace since this the extension's current paradigm. This is also the right granularity for our task at hand. I'm not sure whether we've been intentionally avoiding certain of the TWN bits from Extension:Translate, however, such as the YAML configuration described in https://www.mediawiki.org/wiki/Help:Extension:Translate/Group_configuration
Follow-up work to integrate for Fundraising:
* Create a "Fundraising" namespace where we make the extra permission checks.
* Deploy configuration to enable the new feature for our namespace.
* Move pages to this new namespace, reconfigure tools and workflows which assume the plain, title prefixed page.
* Uninstall the hack.