And I thought that the forum scene had all kinds of people who post with all kinds of ideas, whether they are correct or even in context
Some might say that if you can't stand to see what people think then don't post to start with. These things cut both ways.
As to the white lines of the fork- It looks like there's a couple more between the crown race seat and the lower of the two lines mentioned. This makes me wonder if they are an artifact of the manufacturing process. Perhaps from a clamp or fixture whose edge was applying pressure at these points while the fork was rotated a bit.
But since you are worried and intend to go fast (if you only went slow this wouldn't matter since slow riders don't count as much as a racer does
) you should get a professional assessment, and do so on paper. A simple look at and then talk about won't hold up in a court if the fork shall fail and your estate seeks compensation. These types of possible issues are impossible to fully understand without a hands on. Andy