MokoRestore::generateStandaloneScript() rewrites the 'Backup Archive'
pre-check via str_replace(ORIG, REPL) but was missing the third
$php subject argument, so every standalone-mode backup fatally errored
with 'str_replace() expects at least 3 arguments, 2 given' at the
'Generating standalone restore.php...' step. The archive still finalized
and uploaded, but no restore.php was produced -- the underlying cause of
#226 (restore script missing on the remote).
Refs #226
Claude-Session: https://claude.ai/code/session_01WbGBN9VyRK61zczYWcCQ2i