style: apply ruff format across backend + scripts (line-length 100)

Mechanical, whole-tree `ruff format` pass — no behaviour change. Recorded in
.git-blame-ignore-revs (next commit) so git blame skips it.

backend/tests/test_plex_detail.py

@@ -9,6 +9,7 @@ rich-fetch time and served from the DB row instead of a live plex.metadata() cal
 
 The endpoint tests use the DB lane (`db` fixture) — skipped when no Postgres is reachable.
 """
+
 from types import SimpleNamespace
 
 from fastapi.testclient import TestClient
@@ -37,7 +38,11 @@ RICH_META = {
     "studio": "Paramount",
     "tagline": "An offer you can't refuse.",
     "Role": [
-        {"tag": "Marlon Brando", "role": "Vito Corleone", "thumb": "https://metadata-static.plex.tv/b.jpg"},
+        {
+            "tag": "Marlon Brando",
+            "role": "Vito Corleone",
+            "thumb": "https://metadata-static.plex.tv/b.jpg",
+        },
         {"tag": "Al Pacino", "role": "Michael"},
     ],
 }
@@ -45,6 +50,7 @@ RICH_META = {
 
 # ---- pure parse/persist --------------------------------------------------------------------------
 
+
 def test_rich_detail_prefers_imdb_entry_and_builds_link():
     d = detail.rich_detail(RICH_META)
     assert d["imdb_rating"] == 8.7  # the imdb Rating entry, not audienceRating (9.9)
@@ -83,6 +89,7 @@ def test_apply_rich_detail_empty_cast_persists_null():
 
 # ---- backfill persistence (DB lane) --------------------------------------------------------------
 
+
 class _StubClient:
     """Stand-in for PlexClient: `_enrich_people_batch` calls plex.metadata(rating_key); item_detail
     uses it as a context manager and passes markers=True. `raise_` simulates a Plex outage."""
@@ -108,7 +115,10 @@ def test_apply_facet_fields_preserves_enriched_cast_names():
     sync never clears people_enriched_at, nothing would regrow it and the person-page filter would lose
     the names past the listing cap (regression guard for E5 S5b's enrich gating)."""
     # The cheap listing's top few cast + the (always-present) director.
-    thin = {"Role": [{"tag": "Al Pacino"}, {"tag": "James Caan"}], "Director": [{"tag": "Francis Ford Coppola"}]}
+    thin = {
+        "Role": [{"tag": "Al Pacino"}, {"tag": "James Caan"}],
+        "Director": [{"tag": "Francis Ford Coppola"}],
+    }
 
     # Not-yet-enriched row: the listing cast IS applied.
     fresh = SimpleNamespace(people_enriched_at=None, directors=None, cast_names=None)
@@ -117,6 +127,7 @@ def test_apply_facet_fields_preserves_enriched_cast_names():
 
     # Enriched row: the fuller stored cast is KEPT, not overwritten by the thin listing.
     from datetime import datetime, timezone
+
     enriched = SimpleNamespace(
         people_enriched_at=datetime.now(timezone.utc),
         directors=["Francis Ford Coppola"],
@@ -179,6 +190,7 @@ def test_enrich_people_batch_persists_detail(db):
 
 # ---- item_detail serving (DB lane) ---------------------------------------------------------------
 
+
 def _get(db, user, monkeypatch, path):
     monkeypatch.setattr(state, "_configured_cache", True)  # pass the request gate
     app.dependency_overrides[get_db] = lambda: db
@@ -203,10 +215,18 @@ def test_item_detail_movie_serves_from_row_despite_live_outage(db, monkeypatch):
     db.add(lib)
     db.flush()
     from datetime import datetime, timezone
+
     mv = PlexItem(
-        rating_key="m1", library_id=lib.id, kind="movie", title="The Godfather",
-        genres=["Crime", "Drama"], directors=["Francis Ford Coppola"], studio="Paramount",
-        content_rating="R", imdb_rating=8.7, imdb_id="tt0068646",
+        rating_key="m1",
+        library_id=lib.id,
+        kind="movie",
+        title="The Godfather",
+        genres=["Crime", "Drama"],
+        directors=["Francis Ford Coppola"],
+        studio="Paramount",
+        content_rating="R",
+        imdb_rating=8.7,
+        imdb_id="tt0068646",
         tagline="An offer you can't refuse.",
         full_cast=[{"name": "Marlon Brando", "role": "Vito Corleone", "thumb": None}],
         people_enriched_at=datetime.now(timezone.utc),
@@ -283,9 +303,14 @@ def test_show_detail_serves_from_row(db, monkeypatch):
     db.add(lib)
     db.flush()
     from datetime import datetime, timezone
+
     show = PlexShow(
-        rating_key="s1", library_id=lib.id, title="A Show", genres=["Drama"],
-        imdb_rating=9.1, imdb_id="tt0903747",
+        rating_key="s1",
+        library_id=lib.id,
+        title="A Show",
+        genres=["Drama"],
+        imdb_rating=9.1,
+        imdb_id="tt0903747",
         full_cast=[{"name": "Bryan Cranston", "role": "Walter White", "thumb": None}],
         people_enriched_at=datetime.now(timezone.utc),
     )