assertArrayEquals(new byte[] { (byte) 0xAA, (byte) 0xBB }, dest, "Writer must be little‑endian");
    }

    @Test
    @DisplayName("writeUShort handles negative values as unsigned")
    void testWriteUShortNegative() {
        byte[] dest = new byte[2];
        NtlmMessage.writeUShort(dest, 0, -2);
        assertArrayEquals(new byte[] { -2, -1 }, dest, "Negative short should be encoded unsigned");
    }

    @Test