refactor: enhance error handling and performance tracking across components

- Improve localStorage access in ActivityFeed, ChatWidget, and AdminPage with try-catch blocks to handle potential errors gracefully.
- Update performance tracking in AnalyticsProvider and analytics.ts to ensure robust error handling and prevent failures from affecting user experience.
- Refactor Web Vitals tracking to include error handling for observer initialization and data collection.
- Ensure consistent handling of hydration mismatches in components like BackgroundBlobs and ChatWidget to improve rendering reliability.

components/ModernAdminDashboard.tsx

@@ -157,7 +157,7 @@ const ModernAdminDashboard: React.FC<ModernAdminDashboardProps> = ({ isAuthentic
   const stats = {
     totalProjects: projects.length,
     publishedProjects: projects.filter(p => p.published).length,
-    totalViews: (analytics?.overview?.totalViews as number) || (analytics?.totalViews as number) || projects.reduce((sum, p) => sum + (p.analytics?.views || 0), 0),
+    totalViews: ((analytics?.overview as Record<string, unknown>)?.totalViews as number) || (analytics?.totalViews as number) || projects.reduce((sum, p) => sum + (p.analytics?.views || 0), 0),
     unreadEmails: emails.filter(e => !(e.read as boolean)).length,
     avgPerformance: (() => {
       // Only show real performance data, not defaults
@@ -172,9 +172,9 @@ const ModernAdminDashboard: React.FC<ModernAdminDashboardProps> = ({ isAuthentic
       }, 0) / projectsWithPerf.length);
     })(),
     systemHealth: (systemStats?.status as string) || 'unknown',
-    totalUsers: (analytics?.metrics?.totalUsers as number) || (analytics?.totalUsers as number) || 0,
-    bounceRate: (analytics?.metrics?.bounceRate as number) || (analytics?.bounceRate as number) || 0,
-    avgSessionDuration: (analytics?.metrics?.avgSessionDuration as number) || (analytics?.avgSessionDuration as number) || 0
+    totalUsers: ((analytics?.metrics as Record<string, unknown>)?.totalUsers as number) || (analytics?.totalUsers as number) || 0,
+    bounceRate: ((analytics?.metrics as Record<string, unknown>)?.bounceRate as number) || (analytics?.bounceRate as number) || 0,
+    avgSessionDuration: ((analytics?.metrics as Record<string, unknown>)?.avgSessionDuration as number) || (analytics?.avgSessionDuration as number) || 0
   };
 
   useEffect(() => {