Auto-generate notifications on patient record create/update (fan out to
the other clinic members, pushed live), and wire the sidebar bell to real
data via a useNotifications hook over the shared socket: live unread badge,
real list, mark-all-read on open. Drops the hardcoded sample array and the
dead "View all" link.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>