RestoreAnnotationByID and PurgeAnnotationByID dispatch on annotation kind
(highlight/note/bookmark) to the new queries, broadcasting an annotation
update on restore so connected web sessions refresh. Both report whether
a row actually changed.
TombstoneBookmarkByDedupKey mirrors the existing TombstoneHighlight for
bookmarks: devices report deletions by dedup key (they have no row IDs),
and until now only highlights had a key-based tombstone path — device
bookmark deletions had nowhere to land.
ValidAnnotationKind centralizes the kind check the HTTP handlers share.
john-okeefe
d4c52e9a6a