feat(dot_alfred): load_by_tmdb_id on release repos

Series repo returns (release, folder) so the upcoming sync
orchestrator can feed the library index's upsert(..., path=...).
Movie repo returns the release alone (folder is on release.folder
by the one-folder-one-file convention) — kept as a semantic alias
of find_by_tmdb_id for symmetry with the series side.

tests/infrastructure/persistence/dot_alfred/v2/test_release_repository.py

@@ -90,6 +90,30 @@ class TestSeriesReleaseRepositoryReads:
         assert len(results) == 1
 
 
+class TestSeriesReleaseRepositoryLoadByTmdbId:
+    def test_returns_release_and_folder_tuple(
+        self, tv_library, foundation_release
+    ):
+        repo = DotAlfredSeriesReleaseRepository(tv_library)
+        repo.save(foundation_release, show_folder="Foundation")
+        result = repo.load_by_tmdb_id(TmdbId(84958))
+        assert result is not None
+        release, folder = result
+        assert release == foundation_release
+        assert folder == "Foundation"
+
+    def test_returns_none_when_tmdb_id_absent(
+        self, tv_library, foundation_release
+    ):
+        repo = DotAlfredSeriesReleaseRepository(tv_library)
+        repo.save(foundation_release, show_folder="Foundation")
+        assert repo.load_by_tmdb_id(TmdbId(999999)) is None
+
+    def test_returns_none_on_empty_library(self, tv_library):
+        repo = DotAlfredSeriesReleaseRepository(tv_library)
+        assert repo.load_by_tmdb_id(TmdbId(84958)) is None
+
+
 class TestSeriesReleaseRepositoryDelete:
     def test_delete_removes_sidecar(self, tv_library, foundation_release):
         repo = DotAlfredSeriesReleaseRepository(tv_library)
@@ -123,6 +147,20 @@ class TestMovieReleaseRepository:
         restored = repo.find_by_tmdb_id(TmdbId(27205))
         assert restored == inception_release
 
+    def test_load_by_tmdb_id_returns_release(
+        self, movie_library, inception_release
+    ):
+        repo = DotAlfredMovieReleaseRepository(movie_library)
+        repo.save(inception_release)
+        assert repo.load_by_tmdb_id(TmdbId(27205)) == inception_release
+
+    def test_load_by_tmdb_id_returns_none_when_absent(
+        self, movie_library, inception_release
+    ):
+        repo = DotAlfredMovieReleaseRepository(movie_library)
+        repo.save(inception_release)
+        assert repo.load_by_tmdb_id(TmdbId(999999)) is None
+
     def test_anchor_mismatch_logs_warning(
         self, movie_library, inception_release, caplog
     ):