Apply ruff fixes

app/models/__init__.py

@@ -19,12 +19,12 @@ from app.models.manufacturer import Manufacturer
 from app.models.part_colour import PartColour
 from app.models.part_type import PartType
 from app.models.permission import Permission
+from app.models.refresh_token import RefreshToken
+from app.models.role import Role
 from app.models.scope_info import ScopeInfo
 from app.models.scope_model import ScopeModel
 from app.models.static_connection import StaticConnection
 from app.models.sub_part_type import SubPartType
-from app.models.refresh_token import RefreshToken
-from app.models.role import Role
 from app.models.unc_thread import UncThread
 from app.models.user import User
 

app/models/fit.py

@@ -7,7 +7,7 @@ from sqlalchemy.orm import Mapped, mapped_column, relationship
 from app.core.database import Base
 
 
-class FitLabel(str, enum.Enum):
+class FitLabel(enum.StrEnum):
     POSSIBLE = "possible"
     EXACT = "exact"
     NONE = "none"

app/models/unc_thread.py

@@ -6,7 +6,7 @@ from sqlalchemy.orm import Mapped, mapped_column
 from app.core.database import Base
 
 
-class UncSeries(str, enum.Enum):
+class UncSeries(enum.StrEnum):
     UNC = "UNC"
     UNF = "UNF"
     UNEF = "UNEF"

app/services/ldap.py

@@ -7,7 +7,6 @@ successful profile is provisioned locally on first sign-in.
 """
 
 import logging
-
 from dataclasses import dataclass
 
 from fastapi.concurrency import run_in_threadpool
@@ -43,7 +42,7 @@ def _bind_and_fetch(username: str, password: str) -> LdapIdentity | None:
     )
     try:
         conn = ldap3.Connection(server, user=user_dn, password=password, auto_bind=True)
-    except LDAPException as e:
+    except LDAPException:
         logging.exception("Failed to log into LDAP for user %s", user_dn)
         # Wrong credentials, unreachable server, or a refused bind.
         return None