You might enjoy this article in the Catholic Encyclopedia.
There don’t seem to be many official doctrines or dogmas regarding the general or last judgement. This is the only defined dogma I found: "Christ, on His second coming, will judge all men. (De fide) This truth is contained in our creeds (eg. Apostle’s Creed, Nicene Creed.)
Regarding all our acts being made “public”. Scripture says:
Mt 10:26 "So have no fear of them; for nothing is covered that will not be revealed, or hidden that will not be known. ( Also Luke 12:2; 1 Cor 4:5
I guess what I notice about the above passage is that it speaks of things that are “covered”, or “hidden”. I tend to think that when we confess our sins, we no longer trying to hide or cover them up. Thus, perhaps, confessed sin that has been forgiven would not be exposed publicly to all. God’s words in the Old Testament come to mind:
*Isaiah 43:25 "I, I am He who blots out your transgressions for my own sake, and I will not remember your sins.
Jeremiah 31:34b … for I will forgive their iniquity, and I will remember their sin no more*."
Also in Mt 25: 31:46 (sheep and the goats), where Jesus describes the Last Judgement, note that only the good deeds of the saved are spoken of (altho everyone, except Mary, would have sinned at some time).