After the full-screen pre-update backup returns to the Joomla Update
confirm page (layout=update&is_backed_up=1), inject a small script that
ticks Joomla's 'I have taken a backup' checkbox (#joomlaupdate-confirm-
backup) and clicks the Install button (.emptystate-btnadd) so the update
continues automatically — no second manual click. Injected via
onBeforeCompileHead, super-user only, gated on backup_before_update.
Claude-Session: https://claude.ai/code/session_01WbGBN9VyRK61zczYWcCQ2i