update per event kind

crates/signed_core/src/filters.rs

@@ -38,6 +38,16 @@ const GIT_ROOT_KINDS: [Kind; 4] = [
     Kind::GitRepoAnnouncement,
 ];
 
+/// Kinds that carry repository data: announcements, states, activity and deletions.
+pub fn is_repo_kind(kind: Kind) -> bool {
+    kind == Kind::GitRepoAnnouncement
+        || kind == Kind::RepoState
+        || kind == Kind::EventDeletion
+        || kind == Kind::RequestToVanish
+        || kind == COVER_NOTE_KIND
+        || ACTIVITY_KINDS.contains(&kind)
+}
+
 /// Value of the first tag named `name` on `event`.
 fn tag_value<'a>(event: &'a Event, name: &str) -> Option<&'a str> {
     event