lint: replace no-op flake8 script with gating ruff check, fix findings

backend/api/auth.py

@@ -17,18 +17,18 @@ from backend.constants.roles import (
     DEFAULT_USER_ROLE,
     ROLE_VALUES,
 )
-from backend.db.session import get_db
 from backend.db.models import User
-from backend.utils.password import verify_password, hash_password
+from backend.db.session import get_db
 from backend.schemas.auth import (
     LoginRequest,
+    PasswordChangeRequest,
+    PasswordChangeResponse,
     RefreshRequest,
     TokenResponse,
     UserResponse,
-    PasswordChangeRequest,
-    PasswordChangeResponse,
 )
 from backend.services.role_permissions import fetch_role_permissions_map
+from backend.utils.password import hash_password, verify_password
 
 router = APIRouter(prefix="/auth", tags=["auth"])
 
@@ -315,7 +315,7 @@ def get_current_user_info(
     # If user doesn't exist in main database, check if we should bootstrap them
     if not user:
         # Check if any admin users exist
-        admin_count = db.query(User).filter(User.is_admin == True).count()
+        admin_count = db.query(User).filter(User.is_admin.is_(True)).count()
         
         # If no admins exist, bootstrap current user as admin
         if admin_count == 0: