List Sessions

curl -X GET "https://api.app.shinzo.ai/spotlight/analytics/sessions?limit=10&sort=total_input_tokens&sortDirection=desc" \
  -H "Authorization: Bearer <jwt_token>"

{
  "sessions": [
    {
      "session_id": "my-app-session-123",
      "session_uuid": "sess_abc123",
      "start_time": "2025-01-15T10:00:00Z",
      "end_time": "2025-01-15T11:30:00Z",
      "total_requests": 15,
      "total_input_tokens": 12450,
      "total_output_tokens": 8320,
      "total_cache_read_tokens": 2100,
      "models_used": ["claude-sonnet-4-20250514"],
      "providers_used": ["anthropic"]
    }
  ],
  "pagination": {
    "total": 42,
    "limit": 10,
    "offset": 0
  }
}