I don't want to hurt your feelings but the Bible does not mention a lot of things which nevertheless exist and existed.
And as far as no version of anything which puts the metal ages prior to four or five thousand years ago
Metallurgy was know to the neolithics of Catal Hoyuk as far back as 7,500 BC. Heck, nearby Gobekli Tepe dates back to 10,000 BC - double the antiquity you erroneously ascribe to the Adam and Eve story, unless you think Martians built it. But the Bible doesn't mention Martians either.
And of course you have Cro Magnon depicted what are now extinct cave bears, wooly rhinos and mammoths 25,000 year ago with a degree of skill that surpasses most of the "art" you find in contemporary primitive "descendants of Adam and Eve" cultures and what you typically find at MOMA.
BTW Stone tools. Adam and Eve and their descendants were metal-tech people from day one.
There is no mention in the Bible of metal before the birth of Cain's sons. Therefore, according to your own rules, it didn't exist on day one as you opined. But I'll let you in on a little secret. Metallurgy has been around for nearly ten thousand years, and whether it's on your list of things to know about or not is inconsequential.
All of the dating schemes you seem to believe in are based on assumptions, mainly that natural isotope ratios have always been as they are now, which go out the window the first time you admit to any sort of a global disaster like the flood at the time of Noah. Standard dating schemes have Cro Magnons dating from around 45K years ago but all we can be reasonably sure of is that they predate the people of the Bible.