Follower notifications (kind 3) now only appear in the Follows
badge, not in the Notifications list where they were confusing
since clicking them shows a contact list, not a note.
Articles bookmarked via e-tag (pre-fix) now correctly appear
under the Articles tab instead of Notes.
Bookmarks load instantly from DB cache, then fetch missing notes
from relays in background. Articles feed shows cached kind-30023
events immediately on the latest tab. Both persist to SQLite for
instant load on next visit.