Unquoted \$ARGUMENTS in the ! shell commands allowed shell metacharacters
in user-supplied job IDs to be expanded before Node received them (e.g.,
`task-123; malicious-cmd` would execute the trailing command). This is
inconsistent with review.md and adversarial-review.md, which both wrap
"$ARGUMENTS" in double quotes.
Co-authored-by: claude[bot] <claude-bot@anthropic.com>
Co-authored-by: Claude Code <noreply@anthropic.com>
