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_person.py

@@ -5,6 +5,7 @@ scoping (disabled libraries excluded) and the kind filter (episodes are not movi
 
 Uses the DB lane (`db` fixture) — skipped when no Postgres is reachable.
 """
+
 from fastapi.testclient import TestClient
 
 import app.state as state
@@ -42,23 +43,40 @@ def test_person_detail_returns_cast_and_director_credits(db, monkeypatch):
     db.flush()
 
     heat = PlexItem(
-        rating_key="m1", library_id=movies_lib.id, kind="movie", title="Heat",
-        year=1995, cast_names=[NAME, "Al Pacino"],
+        rating_key="m1",
+        library_id=movies_lib.id,
+        kind="movie",
+        title="Heat",
+        year=1995,
+        cast_names=[NAME, "Al Pacino"],
     )
     # Director-only credit: the name is NOT in cast_names, only directors → the OR must still catch it.
     directed = PlexItem(
-        rating_key="m2", library_id=movies_lib.id, kind="movie", title="A Bronx Tale",
-        year=1993, cast_names=["Chazz Palminteri"], directors=[NAME],
+        rating_key="m2",
+        library_id=movies_lib.id,
+        kind="movie",
+        title="A Bronx Tale",
+        year=1993,
+        cast_names=["Chazz Palminteri"],
+        directors=[NAME],
     )
     # Excluded: a movie in a DISABLED library.
     hidden = PlexItem(
-        rating_key="m3", library_id=off_lib.id, kind="movie", title="Hidden",
-        year=2000, cast_names=[NAME],
+        rating_key="m3",
+        library_id=off_lib.id,
+        kind="movie",
+        title="Hidden",
+        year=2000,
+        cast_names=[NAME],
     )
     # Excluded: an episode (kind != "movie") that happens to list the name.
     episode = PlexItem(
-        rating_key="e1", library_id=movies_lib.id, kind="episode", title="An Episode",
-        year=2001, cast_names=[NAME],
+        rating_key="e1",
+        library_id=movies_lib.id,
+        kind="episode",
+        title="An Episode",
+        year=2001,
+        cast_names=[NAME],
     )
     show = PlexShow(rating_key="s1", library_id=shows_lib.id, title="A Show", cast_names=[NAME])
     db.add_all([heat, directed, hidden, episode, show])
@@ -92,7 +110,15 @@ def test_person_detail_unknown_name_is_empty(db, monkeypatch):
     lib = PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True)
     db.add(lib)
     db.flush()
-    db.add(PlexItem(rating_key="m1", library_id=lib.id, kind="movie", title="Solo", cast_names=["Nobody Else"]))
+    db.add(
+        PlexItem(
+            rating_key="m1",
+            library_id=lib.id,
+            kind="movie",
+            title="Solo",
+            cast_names=["Nobody Else"],
+        )
+    )
     user = User(email="empty@example.com")
     db.add(user)
     db.commit()
@@ -117,11 +143,13 @@ def test_person_detail_unknown_name_is_empty(db, monkeypatch):
 
 
 def test_content_libs_partitions_only_enabled(db):
-    db.add_all([
-        PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True),
-        PlexLibrary(plex_key="2", title="Shows", kind="show", enabled=True),
-        PlexLibrary(plex_key="3", title="OffMovie", kind="movie", enabled=False),
-    ])
+    db.add_all(
+        [
+            PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True),
+            PlexLibrary(plex_key="2", title="Shows", kind="show", enabled=True),
+            PlexLibrary(plex_key="3", title="OffMovie", kind="movie", enabled=False),
+        ]
+    )
     db.commit()
     movie_ids, show_ids = _content_libs(db)
     assert len(movie_ids) == 1 and len(show_ids) == 1  # the disabled movie lib is excluded