curl --request GET \
  --url https://api.rewind.rest/v1/reading/calendar \
  --header 'Authorization: Bearer <token>'

{
  "year": 2026,
  "days": [
    {
      "date": "2026-03-01",
      "saved": 3,
      "finished": 1
    },
    {
      "date": "2026-03-02",
      "saved": 5,
      "finished": 2
    },
    {
      "date": "2026-03-03",
      "saved": 1,
      "finished": 0
    }
  ],
  "total_saved": 9,
  "total_finished": 3
}