I don’t understand what to manage about dotfiles. You mean backups?

According to: https://en.wikipedia.org/wiki/Tails_(operating_system)

Tails was first released on June 23, 2009. It is the next iteration of development on Incognito, a discontinued Gentoo-based Linux distribution.[9] The original project was called Amnesia. The operating system was born when Amnesia was merged with Incognito.[10] The Tor Project provided financial support for its development in the beginnings of the project.[8] Tails also received funding from the Open Technology Fund, Mozilla, and the Freedom of the Press Foundation.[11]