Viewer-true "mine": match the change's actor against the VIEWER's own identities; fall back to the serving backend's wire flag only when none are known (it wrongly marks a remote node's changes as "mine").
Viewer-true "mine": match the change's actor against the VIEWER's own identities; fall back to the serving backend's wire flag only when none are known (it wrongly marks a remote node's changes as "mine").