User can sign out of his account

moneymgr_mobile/lib/providers/auth_state.dart

@@ -42,9 +42,14 @@ class CurrentAuthState extends _$CurrentAuthState {
   /// Logs out, deletes the saved token and profile info from storage, and invalidates
   /// the state.
   Future<void> logout() async {
+    final prefs = ref.read(prefsProvider).requireValue;
+
     final secureStorage = ref.read(secureStorageProvider).requireValue;
     await secureStorage.removeToken();
 
+    prefs.clearServerConfig();
+    prefs.clearAuthInfo();
+
     ref
     // Invalidate the state so the auth state will be updated to authenticated.
         .invalidateSelf();