Have done this before, Windows being Windows it will replace grub with the windows boot loader. Use a live disk to reinstall grub and reset your boot options and you’re done.
Same been running netdata for years. They’re monetizing now where it used to just be free. Good for them, it’s a great product. And it’s foss
If it isn’t meant for others to see, what’s wrong with a .txt file you just add notes to?