The notification bell hears new notifications as they happen (notificationsRealtime; Shared 1.22.0, roadmap WS-E task 3): Network's network.notification.created over OpenVibe.Events' realtime stream, with polling as the fallback. Only a signed-in bell with a Network token opens a stream.

ddiff --git a/server/ui/layout.js b/server/ui/layout.js
iindex d819295..941d35f 100644
---- a/server/ui/layout.js
++++ b/server/ui/layout.js
@@@ -46,6 +46,7 @@ function renderPage({ title, body, user, canonicalPath = '/', robots = 'noindex,
          sessionUrl: '/auth/me',
          loginUrl: `/auth/login?next=${encodeURIComponent(canonicalPath)}`,
          logoutUrl: '/auth/logout?next={path}',   // Sign out in the shared navbar ends this site's session too
++        notificationsRealtime: true,   // the bell hears new notifications over OpenVibe.Events (Shared 1.22.0)
      };
      const foot = { service: 'openre', variant: 'compact', mount: '#ov-footer', brandName: SITE, legalBase: config.liveUrl, updates: '/updates',
          links: [{ heading: SITE, items: [{ name: 'Streams', url: '/streams' }, { name: 'Source code', url: 'https://github.com/OpenVibers/OpenRe.Stream' }] }] };