- 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`.
- Decode and validate JWT payload to detect expired or near-expiring tokens.
- Implement `refreshAccessToken` using Keycloak endpoints for seamless token refresh.
- Modify `serverCall` to refresh and update token dynamically before API requests.
- Improve error logging for token decoding and refresh operations.
- Delete unused `callApi` utility and related imports across components.
- Replace `callApi` with direct `fetch` usage in `validateCustomer` and `addCustomer`.
- Update `customerRoutes` to include `/api` prefix for consistency.
- Refactor `useErrorHandler` to ensure comprehensive state management during errors.
- Improve `ErrorBoundary` component text for better clarity in fallback UI.
- Align `CustomersPage` logic with `useCallback` for optimized dependency management.
