--fix with ruff

backend/app/routers/planned_days.py

@@ -5,11 +5,10 @@ from uuid import UUID
 
 from fastapi import APIRouter, HTTPException, Query, status
 
-from app.dependencies import AnalyticsServiceDep, CurrentUserDep, PlanningServiceDep
+from app.dependencies import CurrentUserDep, PlanningServiceDep
 from app.models.planned_leave import (
     PlannedLeaveDayCreate,
     PlannedLeaveDayResponse,
-    PlannedLeaveDayUpdate,
 )
 from app.utils.errors import NotFoundError, ValidationError
 
@@ -73,8 +72,6 @@ async def list_planned_days_by_range(
     _current_user: CurrentUserDep = None,
 ) -> list[PlannedLeaveDayResponse]:
     # Inject dependencies manually for query parameters
-    from app.dependencies import PlanningServiceDep as PSep
-    from app.dependencies import CurrentUserDep as CUD
 
     # Since we can't easily pass Query params with FastAPI dependencies,
     # we'll need to inject them differently

backend/app/utils/dates.py

@@ -4,7 +4,6 @@ Pure functions with no I/O or state. Used by planning and analytics services.
 """
 
 import datetime
-from typing import Union
 
 
 def add_months(date: datetime.date, n: int) -> datetime.date: