评论

GET /api/posts/:id/comments

{
  "ok": true,
  "comments": [
    {
      "id": "评论ID",
      "post_id": "文章ID",
      "author": "评论者",
      "content": "内容",
      "date": "2025-01-01T00:00:00Z",
      "status": "approved",
      "parent_id": null
    }
  ]
}

POST /api/posts/:id/comments

{
  "author": "评论者名称",
  "content": "评论内容",
  "parentId": "父评论 ID（可选）"
}

GET /api/comments
Authorization: Bearer <token>

PUT    /api/comments/:id    # 更新状态 {"status": "approved"}
DELETE /api/comments/:id    # 删除

评论 A
├── 回复 A1 (parent_id: A)
└── 回复 A2 (parent_id: A)
    └── 回复 A2-1 (parent_id: A2)