- Introduce `AuthWrapper` component for streamlined session-based layouts and authentication handling.
- Add new utilities (`tokenUtils.ts`) for JWT decoding, token expiration checks, and refresh operations via Keycloak.
- Refactor `serverCall` and `authOptions` to use centralized token refresh logic, removing redundant implementations.
- Implement `ClientSessionProvider` for consistent session management across the client application.
- Simplify `RootLayout` by delegating authentication enforcement to `AuthWrapper`.
- Add `ErrorBoundary` component to handle rendering fallback UI during errors.
- Integrate `ErrorBoundary` into main layout and critical pages for global error handling.
- Create `useErrorHandler` hook to handle async errors consistently across components.
- Refactor `NewCustomerModal` and `CustomersPage` to leverage `useErrorHandler` for improved error management.
- Add a fallback dialog UI for user-friendly error reporting and resolution.
