Replace simple spinner with skeleton loading placeholders that match
the dashboard layout structure, providing better visual feedback during
data loading.
- Install react-hot-toast library
- Add Toaster component to App.jsx
- Show success/error toasts for match accept/reject/cancel
- Show toasts for real-time match events
- Update tests with toast mocks
- Create DashboardPage with active events, matches, and requests
- Add dashboardAPI.getData() to services/api.js
- Add /dashboard route as default landing after login
- Update Navbar with Dashboard and Events links
- Show video exchange and rating status for matches
- Handle match accept/reject/cancel actions
