Nevertheless, Genesis 3 describes the decision to be Eve's and later Adam's. The only involvement of God is that He commanded them not to eat from the fruit. When they have eaten it, God is described looking for them, and then querying them what did they do. The plain reading does not agree with the "God ordained it" fantasy. In fact, the inspired author goes out of his way to describe God as discovering the truth as if by accident during His afternoon stroll. So, your version of plain meaning then is that God asked them what they had done, because He did not know, and wanted to be educated by them? Is that the plain meaning?
That is the literary device that the inspired author used in order to indicate that the will of God was not followed but rather violated: God did not ordain the Fall.
Obviously, all-knowing God foreknew the Fall.