verify(tree, times(1)).close();
        verify(fd, times(1)).close();
    }

    @Test
    @DisplayName("available() on SMB1 returns reported available when connected")
    void available_smb1_connected() throws Exception {
        // Verify SMB1 path: non-disconnected status returns 'available' from response
        SmbPipeInputStream stream = newStreamWithInit(false);