Restore Website Version

Restores the website (or a single file/folder) from an automatic snapshot listed by site_versions — this is how you undo an overwritten or lost change. `path` restores just that file/folder (index.html or blog/); empty restores the WHOLE site to that snapshot. confirm=false previews what would change; confirm=true applies it (live immediately). The current state is snapshotted before restoring, so a restore is itself undoable. IMPORTANT: if the site is produced by a generator (a source folder + build script), restore gets the content back but the NEXT rebuild will overwrite it again — port the recovered content into the generator source too, or the loss repeats.