If you just want to download it, https://github.com/YhvrWasTaken/cloaker/releases
(Will get windows/linux later)
How I did it? I'm honestly not sure. I used the npm package redditor, replacing reddit.com with saidit.net.
If you want more info, check out the README.
If you want to fix my shitty CSS, check out the styles.css.
Your password/username is not stored anywhere, not even your own computer.