Function dispatch_sop_event_to_deduplicated 

pub async fn dispatch_sop_event_to_deduplicated(
    engine: &Arc<Mutex<SopEngine>>,
    audit: &SopAuditLogger,
    event: SopEvent,
    target_sop: &str,
    dedup_key: &str,
) -> Vec<DispatchResult>

Dispatch to one named SOP with an active-run key shared by independent producers (for example Git-channel polling and a reconciliation sweep).