This is a follow-on iteration of T112856's Recent Changes hooks, starting with these known bugs:
- The "R" flag should hide once a human has reviewed the offending change.
- Fix mw-core "old" recent changes view to respect recentChangesFlags.
- Add a link to suspected damaging change lines, even when the review flag is hidden. The link text summarizes the perceived issue and the link target is this revision's revscore details page.
- TODOs in code.