The first page of the setup wizard now offers Restore from a backup next to
Get Started. It takes a backup made with Messages ticked and brings back the
accounts, channels, messages, settings and (when included) uploaded files,
so there is no new admin to create and then import over. Data already on the
computer is kept as .pre-restore copies, a bad or partial backup is refused
before anything is touched, and the new .env names the restored admin. The
restore itself is installer/restore-backup.js, using the same extractor as a
restore from Settings.
ancsemi