After dual-close leaves option pending, continue close_group instead of false residual; reject partial fills on wait timeout; LIVE residual settle allow_negative. Co-authored-by: Cursor <cursoragent@cursor.com>
Prevent expiry dual-close from re-booking option cash, abandon ledger rejection, margin-mode mismatch, and manual close races; harden fill wait and refuse default AUTH_SECRET on LIVE. Co-authored-by: Cursor <cursoragent@cursor.com>
dekun