feat: implement TMDb enrichment for movie profiles

- Add SqliteMovieProfileRepository for managing movie profiles in SQLite.
- Create TmdbEnrichmentClient to fetch movie details from TMDb API.
- Implement enrichment event handling with EnrichmentHandler.
- Introduce periodic jobs for cleaning up expired import sessions and checking for stale movie profiles.
- Update application context to include movie profile repository.
- Add API endpoint to retrieve movie profiles.
- Extend domain models with new structures for movie enrichment (Genre, Keyword, CastMember, CrewMember, MovieProfile).
- Modify event system to include MovieEnrichmentRequested event.
- Enhance tests to cover new functionality and ensure stability.

crates/domain/src/ports.rs

@@ -6,8 +6,8 @@ use crate::{
     events::{DomainEvent, EventEnvelope},
     models::{
         AnnotatedRow, DiaryEntry, DiaryFilter, ExportFormat, FeedEntry, FieldMapping,
-        FileFormat, ImportError, ImportProfile, ImportSession, Movie, MovieStats, ParsedFile,
-        Review, ReviewHistory, User, UserStats, UserSummary, UserTrends,
+        FileFormat, ImportError, ImportProfile, ImportSession, Movie, MovieProfile, MovieStats,
+        ParsedFile, Review, ReviewHistory, User, UserStats, UserSummary, UserTrends,
         collections::{PageParams, Paginated},
     },
     value_objects::{
@@ -217,6 +217,31 @@ pub trait EventHandler: Send + Sync {
     async fn handle(&self, event: &DomainEvent) -> Result<(), DomainError>;
 }
 
+#[async_trait]
+pub trait PeriodicJob: Send + Sync {
+    fn interval(&self) -> std::time::Duration;
+    async fn run(&self) -> Result<(), DomainError>;
+}
+
+#[async_trait]
+pub trait MovieProfileRepository: Send + Sync {
+    async fn upsert(&self, profile: &MovieProfile) -> Result<(), DomainError>;
+    async fn get_by_movie_id(&self, id: &MovieId) -> Result<Option<MovieProfile>, DomainError>;
+    /// Returns (movie_id, external_metadata_id) for movies with no profile or a stale one
+    /// (enriched_at older than 30 days).
+    async fn list_stale(&self) -> Result<Vec<(MovieId, String)>, DomainError>;
+}
+
+#[async_trait]
+pub trait MovieEnrichmentClient: Send + Sync {
+    /// Resolves an external ID (TMDb or IMDb) and fetches the full movie profile.
+    async fn fetch_profile(
+        &self,
+        movie_id: MovieId,
+        external_metadata_id: &str,
+    ) -> Result<MovieProfile, DomainError>;
+}
+
 #[async_trait]
 pub trait ImportSessionRepository: Send + Sync {
     async fn create(&self, session: &ImportSession) -> Result<(), DomainError>;