Change #1170372 had a related patch set uploaded (by Jsn.sherman; author: Jsn.sherman):

[mediawiki/extensions/GrowthExperiments@master] Add moderation module to the homepage

https://gerrit.wikimedia.org/r/1170372

Okay, I think this is worth looking at now. I just used the same "moderation monitoring" nomenclature that @Kgraessle used in her initial hackathon patch.

GE enrollment happens at account creation time. To force new all new accounts into the moderation-monitoring experiment, add this to your LocalSettings.php
$wgConditionalUserOptions['growthexperiments-homepage-variant'] = [ [ 'moderation-monitoring' ] ];

I forced an existing account by manually updating the hidden user pref in my javascript console:
new mw.Api().saveOption("growthexperiments-homepage-variant","moderation-monitoring");location.reload();

changing back to default is just as simple:
new mw.Api().saveOption("growthexperiments-homepage-variant","control");location.reload();

CC for the module may be found at Special:CommunityConfiguration/GrowthModeration
where you can configure things like enable/disable and minimum edit count

When you are enrolled and meet the criteria, you can then see the module at Special:Homepage

Note that I haven't documented my i18n strings or looked at tests yet.

This looks great and works as expected!

I'd be curious to see what the growth team thinks?

okay, per followup conversations and requests from @Samwalton9-WMF:

users that are bucketed into the moderation variant (eg. those with that meet our editcount requirements) will see a toggle that allows them to enable/disable "moderation mode" on the homepage.

disabled	enabled

If the module is disabled in mediawiki or community config, or if the user doesn't meet the requirements, they are not put into the moderation variant. Since we have two different modes within our variant, we'll have to think carefully about measurement planning & experiment design. I think this is about as far as we can go on the tooling side until we know more about what we're trying to learn.

@Michael We'll definitely want the growth engineering folks to have a look at my updated poc patch.

@jsn.sherman I'm standing up this patch again as part of investigation into T403496: [SPIKE] How could we display tips to users who click through to edits or discussions from the moderator dashboard?[4H] and I'm seeing an error locally:

Failed to mount app: mount target selector "#moderation-monitoring-vue-root" returned null.

I have updated my LocalSettings.php config:

$wgConditionalUserOptions['growthexperiments-homepage-variant'] = [ [ 'moderation-monitoring' ] ];

and then ran:

new mw.Api().saveOption("growthexperiments-homepage-variant","moderation-monitoring");location.reload();

Am I missing any other setup? I definitely had this working locally at some point.

It turns out that our variant was failing to load if the help desk title wasn't set in CC; I just uploaded a new patchset that makes it optional.