assertTrue(resp.isLoggedInAsGuest(), "Anonymous should be treated as guest login");
    }

    @Test
    @DisplayName("prepare should not set sessionId if not received yet")
    void testPrepareWithoutReceivedDoesNotPropagate() {
        Smb2SessionSetupResponse resp = newResponse();
        // Set a sessionId, but do not mark as received via decode
        resp.setSessionId(0x1234L);