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/app/routes/plex/admin.py

@@ -25,9 +25,7 @@ router = APIRouter(prefix="/api/plex", tags=["plex"])
 
 
 @router.post("/test")
-def test_connection(
-    _: User = Depends(admin_user), db: Session = Depends(get_db)
-) -> dict:
+def test_connection(_: User = Depends(admin_user), db: Session = Depends(get_db)) -> dict:
     """Admin: verify the configured Plex server URL + token, returning the server name and the
     movie/show sections (for the config library-picker). Also probes ONE real media file through
     the local mount, so a missing bind-mount / wrong path-map is caught here rather than only
@@ -59,9 +57,7 @@ def test_connection(
     }
 
 
-def _sample_plex_path(
-    db: Session, plex: PlexClient, sections: list[dict]
-) -> str | None:
+def _sample_plex_path(db: Session, plex: PlexClient, sections: list[dict]) -> str | None:
     """A real Plex-side media file path to validate the mount + path-map against. Prefers the
     already-mirrored catalog (cheap); before the first sync, pulls one movie leaf from an enabled
     section straight from Plex."""
@@ -113,13 +109,9 @@ def _link_dict(link: PlexLink | None) -> dict:
 
 
 @router.get("/watch/link")
-def watch_link_status(
-    user: User = Depends(current_user), db: Session = Depends(get_db)
-) -> dict:
+def watch_link_status(user: User = Depends(current_user), db: Session = Depends(get_db)) -> dict:
     """This user's Plex watch-sync link status (drives the Settings toggle)."""
-    link = db.execute(
-        select(PlexLink).where(PlexLink.user_id == user.id)
-    ).scalars().first()
+    link = db.execute(select(PlexLink).where(PlexLink.user_id == user.id)).scalars().first()
     return _link_dict(link)
 
 
@@ -139,13 +131,9 @@ def watch_link_set(
     if not sysconfig.get_bool(db, "plex_enabled"):
         raise HTTPException(status_code=409, detail="The Plex module is disabled.")
     enabled = body.enabled
-    link = db.execute(
-        select(PlexLink).where(PlexLink.user_id == user.id)
-    ).scalars().first()
+    link = db.execute(select(PlexLink).where(PlexLink.user_id == user.id)).scalars().first()
     if link is None:
-        link = PlexLink(
-            user_id=user.id, uses_admin=True, linked_at=datetime.now(timezone.utc)
-        )
+        link = PlexLink(user_id=user.id, uses_admin=True, linked_at=datetime.now(timezone.utc))
         db.add(link)
     link.sync_enabled = enabled
     db.commit()
@@ -157,14 +145,10 @@ def watch_link_set(
 
 
 @router.post("/watch/import")
-def watch_import_now(
-    user: User = Depends(admin_user), db: Session = Depends(get_db)
-) -> dict:
+def watch_import_now(user: User = Depends(admin_user), db: Session = Depends(get_db)) -> dict:
     """Admin: (re-)run the "Plex is master" import for this account — Plex re-wins on the
     intersection; Siftlode-only states are preserved. Idempotent."""
-    link = db.execute(
-        select(PlexLink).where(PlexLink.user_id == user.id)
-    ).scalars().first()
+    link = db.execute(select(PlexLink).where(PlexLink.user_id == user.id)).scalars().first()
     if link is None or not link.sync_enabled:
         raise HTTPException(status_code=409, detail="Enable Plex watch-sync first.")
     result = plex_watch.import_owner_watch_state(db, link)