application layer

Co-authored-by: Copilot <copilot@github.com>

crates/domain/src/events.rs

@@ -1,6 +1,6 @@
 use chrono::NaiveDateTime;
 
-use crate::value_objects::{MovieId, Rating, ReviewId, UserId};
+use crate::value_objects::{ExternalMetadataId, MovieId, Rating, ReviewId, UserId};
 
 #[derive(Clone, Debug)]
 pub enum DomainEvent {
@@ -11,4 +11,8 @@ pub enum DomainEvent {
         rating: Rating,
         watched_at: NaiveDateTime,
     },
+    MovieDiscovered {
+        movie_id: MovieId,
+        external_metadata_id: ExternalMetadataId,
+    },
 }