OptionalencryptedWhether a passphrase has to be asked for before it can be restored.
OptionalfileDisplay name of the chosen backup (when status === "selected").
OptionalmessageFailure detail (when status === "error"), e.g. setup already being busy.
Outcome of ElectronRestoreApi.pickBackup: what the chosen backup is, never where it is.
The file itself stays with the main process, which holds it as the one waiting to be restored, so the renderer is given only what the screen has to show and decide with.