In your document, the rights are referred to being those of the people of the United States, not the people of Virginia, and certainly not to the State of Virginia. The reservations to ratification in said document do not claim a unilateral right for states to secede.
Pointing to that as justification of unilateral state succession as was pretended by states in 1860 is either simple error, or deliberate intention by you to mislead. Which is it?
There is NOTHING in the Constitution that specifically forbids secession. I believe, therefore, according to the Tenth Amendment, the states retain that right.
I guess you and I are at an impasse and must agree we disagree. But it was interesting conversing with you.