curl --request GET \
  --url http://localhost:3000/v1/scheduling/leave

{
  "leave_requests": [
    {
      "id": 123,
      "employee_name": "<string>",
      "employee_id": 123,
      "leave_type": "<string>",
      "start_date": "<string>",
      "end_date": "<string>",
      "total_days": 123,
      "status": "pending",
      "reason": "<string>",
      "approved_by": "<string>"
    }
  ],
  "deputy_configured": true
}