curl --request GET \
  --url https://api.sumvin.com/v0/chat/sessions \
  --header 'Authorization: Bearer <token>'

{
  "_links": {},
  "sessions": [
    {
      "id": "<string>",
      "title": "<string>",
      "preview": "<string>",
      "message_count": 123,
      "created_at": 123,
      "updated_at": 123,
      "sv_meta": {},
      "messages": [
        {
          "id": "<string>",
          "message_id": "<string>",
          "role": "<string>",
          "text_content": "<string>",
          "parts": [
            {}
          ],
          "tool_names": [
            "<string>"
          ],
          "extra_metadata": {},
          "sequence": 123,
          "created_at": 123
        }
      ]
    }
  ],
  "total": 123,
  "offset": 123,
  "limit": 123
}