This should be as simple as adding ActionFilteredLogs item to extension.json and adding corresponding i18n messages to en.json and qqq.json. See https://www.mediawiki.org/wiki/Manual:$wgActionFilteredLogs for docs.

rETRA utils/TranslateLogFormatter.php is using $type = $this->entry->getFullType();. A quick codesearch search indicates this extension is the only one using this. As far as I can see, all others are using $type = $this->entry->getSubtype(); so they can later configure the ActionFilteredLogs properly in extension.json. However Translate seems to use rETRA TranslateHooks.php to do this for other logs. I find this a bit messy to me, and I don't think this is a good first task as tagged. I'm quite confused.

There is already entry in TranslateHooks for $wgActionFilteredLogs which can be updated for this log type. The reason it is using PHP instead of extension.json is that the whole page translation feature can be disabled with a config option.

Change 810311 had a related patch set uploaded (by MarcoAurelio; author: MarcoAurelio):

[mediawiki/extensions/Translate@master] Allow filtering the translation review log by subtypes of actions

https://gerrit.wikimedia.org/r/810311

In T216335#8043086, @Nikerabbit wrote:

There is already entry in TranslateHooks for $wgActionFilteredLogs which can be updated for this log type. The reason it is using PHP instead of extension.json is that the whole page translation feature can be disabled with a config option.

Thanks for the hint. Where would you prefer this configured then? extension.json or TranslateHooks.php? It seems more natural to me to do it in extension.json as the log type and handler for this specific log is configured over there.

In extension.json, because it is not specific to page translation feature.

In T216335#8045932, @Nikerabbit wrote:

In extension.json, because it is not specific to page translation feature.

Thank you. I'll amend the patch.

Change 810311 merged by jenkins-bot:

[mediawiki/extensions/Translate@master] Allow filtering the translation review log by subtypes of actions

https://gerrit.wikimedia.org/r/810311

Change 811281 had a related patch set uploaded (by MarcoAurelio; author: MarcoAurelio):

[mediawiki/extensions/Translate@master] log-action-filter-translationreview: Add missing colon

https://gerrit.wikimedia.org/r/811281

Change 811281 merged by jenkins-bot:

[mediawiki/extensions/Translate@master] log-action-filter-translationreview: Add missing colon

https://gerrit.wikimedia.org/r/811281