{
  "schema_version": "1.3.0",
  "status": "ready",
  "timezone": "Asia/Shanghai",
  "updated_at": "2026-07-20T18:23:21Z",
  "latest_date": "2026-07-20",
  "available_dates": [
    "2026-07-20",
    "2026-07-16"
  ],
  "candidate_count": 2000,
  "methodology_version": "candidate-pool-snapshot-v1",
  "freshness_threshold_hours": 36,
  "ranking_limit": 500,
  "page_size": 100,
  "latest_collection": {
    "search_result_counts": {
      "recent_created": 1000,
      "recent_active": 500,
      "established_active": 500
    },
    "unique_discovered_count": 1898,
    "candidate_added_count": 992,
    "candidate_removed_count": 991,
    "api_request_count": 659,
    "api_retry_count": 1,
    "snapshot_expected_count": 2000,
    "snapshot_complete_count": 2000,
    "snapshot_completeness": 1.0
  },
  "sampling": {
    "target_local_time": "00:20",
    "valid_window_start": "00:00",
    "valid_window_end": "03:00",
    "latest_snapshot_at": "2026-07-20T18:23:21Z",
    "latest_snapshot_valid": true,
    "latest_snapshot_reason": "within_window",
    "latest_valid_snapshot_at": "2026-07-20T18:23:21Z",
    "consecutive_valid_snapshots": 2,
    "next_scheduled_at": "2026-07-22T00:20:00+08:00",
    "expected_first_ranking_at": null,
    "period_progress": {
      "7d": {
        "completed": 1,
        "required": 7
      },
      "30d": {
        "completed": 1,
        "required": 30
      }
    }
  },
  "periods": {
    "7d": {
      "latest_date": null,
      "available_dates": []
    },
    "30d": {
      "latest_date": null,
      "available_dates": []
    }
  }
}