Send processing orders to external fulfillment tracker now

Orders that shift to Processing often don't reach external fulfillment trackers, stalling handoffs and shipments. This forwards order context to the handler so coordinators can act same day.

Overview

When orders move to Processing but don't reach your external fulfillment tools, packing and billing get delayed. Route those orders to the external handler instantly so fulfillment coordinators receive actionable context and work can begin same day.