Refactor application context and repository structure

- Updated `AppContext` to include separate repositories for movies, reviews, diaries, and stats.
- Modified use cases to utilize the new repository structure, ensuring that the correct repositories are called for their respective operations.
- Introduced `DiaryRepository` and `StatsRepository` traits to encapsulate diary and statistics-related operations.
- Updated all relevant use cases, handlers, and tests to reflect the changes in repository usage.
- Ensured that panic repositories are updated to implement the new traits for testing purposes.

crates/presentation/tests/api_test.rs

@@ -96,9 +96,13 @@ async fn test_app() -> Router {
     let repo = SqliteMovieRepository::new(pool);
     repo.migrate().await.expect("migration failed");
 
+    let repo = Arc::new(repo);
     let state = AppState {
         app_ctx: AppContext {
-            repository: Arc::new(repo),
+            movie_repository: Arc::clone(&repo) as _,
+            review_repository: Arc::clone(&repo) as _,
+            diary_repository: Arc::clone(&repo) as _,
+            stats_repository: Arc::clone(&repo) as _,
             metadata_client: Arc::new(PanicMeta),
             poster_fetcher: Arc::new(PanicFetcher),
             poster_storage: Arc::new(PanicStorage),