Add series/season/episode ingestion pipeline

Movie and person ingestion existed, but the series/season/episode API
endpoints had no way to actually populate them from TMDb -- the
biggest remaining gap in Core 0.1's television scope.

- normalize_series/normalize_season in the metadata normalizer,
  including two TMDb quirks that would otherwise silently produce
  empty data: /tv nests keywords and alternative_titles under
  "results" (not "keywords"/"titles" like /movie), and series-level
  creators come from a separate created_by array, not the credits
  cast/crew lists.
- ingest_series upserts the Series row plus season *stubs* (number,
  title, air date, poster -- everything TMDb inlines on /tv/{id});
  ingest_season fetches and upserts one season's full episode list,
  and requires the series to already exist (TMDb has no single
  endpoint for a whole series' episodes, so this has to be a separate
  per-season call).
- Wired through the same job-lifecycle path as movie/person ingestion
  (runner.py, arq tasks, admin endpoints), with the shared boilerplate
  between them factored into runner._run_ingestion and
  admin.py:_enqueue rather than copy-pasted a third and fourth time.
- Unit tests for both normalizers (runnable without a DB) and
  integration tests for the full ingest_series -> ingest_season flow,
  including the series-must-exist-first error and idempotency on
  re-ingestion.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

tests/unit/test_normalizer.py

@@ -6,7 +6,12 @@ from __future__ import annotations
 
 from datetime import date
 
-from app.services.metadata.normalizer import normalize_movie, normalize_person
+from app.services.metadata.normalizer import (
+    normalize_movie,
+    normalize_person,
+    normalize_season,
+    normalize_series,
+)
 
 FAKE_MOVIE = {
     "id": 603,
@@ -182,3 +187,177 @@ def test_normalize_person_profile_artwork_deduplicated():
     # not be inserted twice.
     paths = [a.provider_asset_id for a in person.artwork]
     assert paths.count("/keanu.jpg") == 1
+
+
+FAKE_SERIES = {
+    "id": 1396,
+    "name": "Ozymandias",
+    "original_name": "Ozymandias",
+    "overview": "A chemistry teacher turns to crime.",
+    "tagline": "Change the equation.",
+    "status": "Ended",
+    "original_language": "en",
+    "first_air_date": "2008-01-20",
+    "last_air_date": "2013-09-29",
+    "number_of_seasons": 5,
+    "number_of_episodes": 62,
+    "popularity": 120.5,
+    "vote_average": 8.9,
+    "vote_count": 15000,
+    "genres": [{"id": 18, "name": "Drama"}, {"id": 80, "name": "Crime"}],
+    "created_by": [{"id": 66633, "name": "Vince Gilligan", "gender": 2}],
+    "networks": [{"id": 174, "name": "AMC", "origin_country": "US"}],
+    "production_companies": [
+        {"id": 2605, "name": "Gran Via Productions", "origin_country": "US"}
+    ],
+    "poster_path": "/poster.jpg",
+    "backdrop_path": "/backdrop.jpg",
+    "credits": {
+        "cast": [
+            {
+                "id": 17419,
+                "name": "Bryan Cranston",
+                "character": "Walter White",
+                "order": 0,
+                "gender": 2,
+            }
+        ],
+        "crew": [],
+    },
+    "images": {"posters": [], "backdrops": [], "logos": []},
+    "videos": {"results": []},
+    "keywords": {"results": [{"id": 1, "name": "drug dealer"}]},
+    "alternative_titles": {"results": [{"title": "Breaking Bad", "iso_3166_1": "US"}]},
+    "external_ids": {"imdb_id": "tt0903747", "tvdb_id": 81189},
+    "seasons": [
+        {
+            "season_number": 1,
+            "name": "Season 1",
+            "overview": "The first season.",
+            "air_date": "2008-01-20",
+            "episode_count": 7,
+            "poster_path": "/season1.jpg",
+        },
+        {
+            # TMDb includes a "specials" season with number 0 — must not be
+            # dropped.
+            "season_number": 0,
+            "name": "Specials",
+            "overview": None,
+            "air_date": None,
+            "episode_count": 3,
+            "poster_path": None,
+        },
+    ],
+}
+
+FAKE_SEASON = {
+    "season_number": 1,
+    "name": "Season 1",
+    "overview": "The first season.",
+    "air_date": "2008-01-20",
+    "poster_path": "/season1.jpg",
+    "images": {"posters": []},
+    "external_ids": {"tvdb_id": 12345},
+    "episodes": [
+        {
+            "id": 62085,
+            "episode_number": 1,
+            "name": "Pilot",
+            "overview": "Walter White begins his transformation.",
+            "air_date": "2008-01-20",
+            "runtime": 58,
+            "still_path": "/still1.jpg",
+            "crew": [
+                {"id": 66633, "name": "Vince Gilligan", "department": "Directing", "job": "Director", "gender": 2}
+            ],
+            "guest_stars": [
+                {"id": 99999, "name": "Some Guest", "character": "Random Guy", "order": 5, "gender": 2}
+            ],
+        },
+        {
+            "id": 62086,
+            "episode_number": 2,
+            "name": "Cat's in the Bag...",
+            "overview": None,
+            "air_date": "2008-01-27",
+            "runtime": 48,
+            "still_path": None,
+            "crew": [],
+            "guest_stars": [],
+        },
+    ],
+}
+
+
+def test_normalize_series_maps_core_fields():
+    series = normalize_series(FAKE_SERIES)
+    assert series.external_id == "1396"
+    assert series.title == "Ozymandias"
+    assert series.status == "ended"
+    assert series.first_air_date == date(2008, 1, 20)
+    assert series.number_of_seasons == 5
+
+
+def test_normalize_series_maps_networks_vs_production_companies():
+    series = normalize_series(FAKE_SERIES)
+    assert [n.name for n in series.networks] == ["AMC"]
+    assert [c.name for c in series.companies] == ["Gran Via Productions"]
+
+
+def test_normalize_series_maps_creators_separately_from_crew():
+    series = normalize_series(FAKE_SERIES)
+    assert len(series.creators) == 1
+    assert series.creators[0].name == "Vince Gilligan"
+    assert series.creators[0].department == "Creator"
+    assert all(c.department != "Creator" for c in series.crew)
+
+
+def test_normalize_series_keywords_and_alt_titles_use_tv_shaped_keys():
+    # TMDb nests these under "results" for /tv, unlike "keywords"/"titles"
+    # for /movie — a normalizer bug here would silently return empty lists.
+    series = normalize_series(FAKE_SERIES)
+    assert series.keywords == ["drug dealer"]
+    assert series.alternate_titles == ["Breaking Bad"]
+
+
+def test_normalize_series_keeps_season_zero_specials():
+    series = normalize_series(FAKE_SERIES)
+    season_numbers = sorted(s.season_number for s in series.seasons)
+    assert season_numbers == [0, 1]
+
+
+def test_normalize_series_external_ids_include_tvdb():
+    series = normalize_series(FAKE_SERIES)
+    assert series.external_ids["imdb"] == "tt0903747"
+    assert series.external_ids["tvdb"] == "81189"
+
+
+def test_normalize_season_maps_episodes():
+    season = normalize_season(FAKE_SEASON)
+    assert season.season_number == 1
+    assert len(season.episodes) == 2
+    assert season.episodes[0].external_id == "62085"
+    assert season.episodes[0].title == "Pilot"
+    assert season.episodes[0].runtime_minutes == 58
+
+
+def test_normalize_season_separates_guest_stars_from_main_cast():
+    season = normalize_season(FAKE_SEASON)
+    episode = season.episodes[0]
+    assert episode.cast == []
+    assert len(episode.guest_stars) == 1
+    assert episode.guest_stars[0].character == "Random Guy"
+
+
+def test_normalize_season_maps_episode_crew_and_stills():
+    season = normalize_season(FAKE_SEASON)
+    episode = season.episodes[0]
+    assert episode.crew[0].job == "Director"
+    assert len(episode.stills) == 1
+    assert episode.stills[0].artwork_type == "still"
+
+
+def test_normalize_season_handles_episode_without_still():
+    season = normalize_season(FAKE_SEASON)
+    assert season.episodes[1].stills == []