Core: REST API build-out, documentation & distribution
- Support apps and the API-driven frontend effort with cacheable high-traffic entry points and clean content interfaces.
- Expand mediawiki-containers environment to fully support RESTBase, and improve support for development use cases.
Focus: EventBus & change propagation
- Introduce retry queues
- Complete EventBus & change propagation multi-Dc support & test it: T127718
- Migrate several jobs (in particular RestbaseUpdateJobs) to EventBus / change propagation service.