I think you are going to have to show me where the Council of Orange taught something that the Church no longer teaches, or that the Council taught that man has no free will.
I believe the Catholic Church's position is that the OT is just as "perfect" as anything else. I would agree that it was not complete for God was evolving His word. However, all scripture is inspired by God and is profitable...
The OT Scripture is inspired by God - but its theology is not "perfected". Again, we can consider the question of evil and how Christ Himself corrects the misunderstanding of WHY God allows evil. Christ ALSO corrects and perfects the application and understanding of the Law in Matthew 5-7. These are just a few examples on how the OT Covenant, while irrevocable, is just one step along the way to Jesus Christ, God's final and perfect Revelation.
I'm not sure what you mean by "imperfect" revelation. Our Lord Jesus told the Jews:
Most Jews didn't realize that the Suffering Servant was referring to the Messiah, for example. Thus, it was imperfect in that it was hidden from most people.
And, sadly, that is where you, and many others, error. People set up a paradigm and wrap scripture around it. They hold a Greek perspective of our Lord Jesus and everything revolves around it-the God of Love. Sort of like the male version of Aphrodites (without the lust).
EVERYONE does, including you. Regarding the "Greek" perspective, I don't have any idea of what you are talking about. Greeks were VERY offended by the idea that God, the transcendent creator of all, would become man. That was something they had a difficult time conceiving. Regarding the "God of Love" being Greek, the concept is entirely Biblical.
As Augustine and other church fathers point out; there is not one thing that you have that has not been given you by God.
They also talk about secondary causes - and as I have amply shown, they also believed in free will. There is not one thing that God has not given you. True. AND. God does not save man without man. St. Augustine said a lot of things that you don't seem to be aware of.
Regards
By claiming that Jonah repented you have violated Canon 6. As Augustine, the Canon of Orange, and the scriptures point out, there is not anything that we have that we have not been given. This includes our faith and our will. The only reason we are obedient and humble (more or less) is because of God's grace. Jonah was obedient only because of God.