The announcements page is a public, crawlable route but its page.tsx is
'use client', so it can't export metadata itself and falls back to the
root app/layout.tsx. Add a server-component layout.tsx under
app/(home)/announcements/ that exports route-specific metadata (title,
description, canonical, OpenGraph, Twitter) in the same shape as the
neighboring /blog, /changelog, /contact, /privacy, /terms routes.
page.tsx is unchanged.
Canonical URL matches app/layout.tsx's metadataBase
(https://surfsense.com).
Fixes#1244
- Replaced the existing announcement card and empty state components with imports from the new announcements directory.
- Introduced state management for the announcements sidebar in the LayoutDataProvider.
- Updated navigation items to handle announcements sidebar toggling.
- Integrated AnnouncementsSidebar into the LayoutShell for both mobile and desktop views.
- Enhanced sidebar handling to improve user experience when navigating announcements.
- Added startTime and endTime properties to announcements for time-bound visibility.
- Introduced audience targeting to control who sees announcements (all, users, web_visitors).
- Updated related components and hooks to support new announcement features.
- Removed unused state tracking for dismissed announcements to streamline functionality.
