feat: add presentation layer + bootstrap wiring for vertical slice

crates/bootstrap/src/log_event_publisher.rs

@@ -0,0 +1,12 @@
+use async_trait::async_trait;
+use domain::{errors::DomainError, events::DomainEvent, ports::EventPublisher};
+
+pub struct LogEventPublisher;
+
+#[async_trait]
+impl EventPublisher for LogEventPublisher {
+    async fn publish(&self, event: DomainEvent) -> Result<(), DomainError> {
+        tracing::info!(?event, "domain event published");
+        Ok(())
+    }
+}