Replace the empty right sidebar placeholder with a user-configurable widget
system. Users can add, remove, reorder, collapse, and resize widgets via
drag-and-drop and a picker dialog. Config persists in localStorage (same
pattern as sidebarOrder) and syncs via encrypted settings.
v1 widgets: Trending Tags, Blobbi (mini pet), Status (NIP-38), AI Chat,
Wikipedia (featured article), Bluesky (trending posts), and feed widgets
for Photos, Music, Articles, Events, and Books.
Defaults: Trending + Blobbi for fresh installs. Desktop-only (hidden below
xl breakpoint). Profile pages retain their dedicated ProfileRightSidebar.
Mary Kate Fain
f05097087b