Enhance ErrorBoundary and improve repetition placement logic in scheduling components

- Updated ErrorBoundary to include auto-retry functionality with configurable retry parameters.
- Refined repetition placement logic in HorizontalTimelineCalendar to handle overlaps more accurately, ensuring better visual representation of scheduling data.
- Added comments for clarity on sorting and overlap checks within the repetition handling process.

management-dashboard-web-app/src/components/DashboardLayout.tsx

@@ -249,7 +249,7 @@ export function DashboardLayout({ onLogout, currentRoute }: DashboardLayoutProps
         )
       case 'scheduling':
         return (
-          <ErrorBoundary>
+          <ErrorBoundary autoRetry={true} retryDelay={2000} maxRetries={3}>
             <Suspense fallback={<div className="p-6">Loading scheduling module...</div>}>
               <RemoteScheduling user={user} currentRoute={currentRoute} />
             </Suspense>