That's not scripture, that's spin. When a passage of a dozen verses directly addressing the interrelation between works and faith, concludes "Do you see that by works a man is justified; and not by faith only?" -- I tend to think that St. James meant what he wrote, and not what you imagine he meant and did not say. I go with God every time, -- I am Catholic.
It is true, of course, that works are visible and faith by itself is not. We don't need a gospel to figure that out.
Paul is addressing the issue of judgment. The scripture says nothing about works of any sort being salvific.
Again, spin, and even the spin you offer makes no sense. Of course the issue is judgement: this is when one is saved. St. Paul says that one who does good work gets eternal life, and one who does not, wrath and indignation. Sounds like salvation to me. St. Paul does nothing here, of course other than repeats in condensed form what Christ teaches in Matthew 25.
There are many passages in the Scripture that call people to faith and promise salvation as a result. You pointed out Romans 5 and 10, there are others. But not says that faith ALONE saves, -- that is because Luther's theological fantasies are sucked out of his thumb. Faith alone is contrary to the scripture.