fix(nats): explicit consumer config, ack timeouts, unknown-event acking, delivery_count

crates/domain/src/events.rs

@@ -72,6 +72,7 @@ pub enum DomainEvent {
 
 pub struct EventEnvelope {
     pub event: DomainEvent,
+    pub delivery_count: u64,
     pub ack: Box<dyn Fn() + Send + Sync>,
     pub nack: Box<dyn Fn() + Send + Sync>,
 }
@@ -79,6 +80,7 @@ impl std::fmt::Debug for EventEnvelope {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.debug_struct("EventEnvelope")
             .field("event", &self.event)
+            .field("delivery_count", &self.delivery_count)
             .finish()
     }
 }