update usermanagement to legacy mode

libs/auth/src/lib/utils/refresh-token.ts

@@ -0,0 +1,31 @@
+import { authStorage } from './auth-storage';
+
+const BASE_API_URL =
+  (import.meta as { env?: Record<string, string> }).env?.['VITE_BASE_API_URL'] ??
+  'http://localhost:3001/api';
+
+interface RefreshResponse {
+  token: string;
+  refreshToken: string;
+}
+
+export async function refreshAccessToken(): Promise<string> {
+  const refreshToken = authStorage.getRefreshToken();
+  if (!refreshToken) throw new Error('No refresh token available');
+
+  const response = await fetch(`${BASE_API_URL}/auth/refresh`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ refreshToken }),
+  });
+
+  if (!response.ok) {
+    authStorage.clear();
+    throw new Error('Token refresh failed');
+  }
+
+  const data: RefreshResponse = await response.json();
+  authStorage.setToken(data.token);
+  if (data.refreshToken) authStorage.setRefreshToken(data.refreshToken);
+  return data.token;
+}