As a first step towards supporting Echo notifications fully, we need to convert our existing polling system for Wikidata reverts to use the new push notification infrastructure. The user experience should remain unchanged.
For the notifications UX you can refer to the original implementation here: T203167
For context on description editing generally, and revert biz logic, see here: https://phabricator.wikimedia.org/T193691
For more on the service/APNS bridging see here: T252837
For prototype iOS push client see here: T252691
**//Note that this requires slightly different implementation for English compared to all other languages (which use Wikidata). It may be helpful to review/implement this ticket in combination with the API migration for English description editing: T257867//**