{
  "task_id": "collect_community_posts_1777383798",
  "collection_type": "community_posts",
  "collected_at": "2026-04-28T21:43:28.800769",
  "materials": [
    {
      "material_id": "community_posts_20260428_214328_1",
      "title": "community_posts示例内容1",
      "content": "这是community_posts的示例内容...",
      "source": "system",
      "tags": [
        "community_posts",
        "示例"
      ],
      "relevance_score": 0.8,
      "quality_score": 0.75
    }
  ]
}