{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Knowledge Point",
  "description": "执业药师考试知识点条目",
  "type": "object",
  "properties": {
    "point_id": {
      "type": "string",
      "description": "知识点唯一ID，格式 KP-{subject}-{chapter}-{seq}"
    },
    "subject": {
      "type": "string",
      "enum": ["yao1", "yao2", "fagui", "zonghe"],
      "description": "考试科目代码"
    },
    "chapter_id": {
      "type": "string",
      "description": "章节ID"
    },
    "chapter_name": {
      "type": "string",
      "description": "章节名称"
    },
    "title": {
      "type": "string",
      "description": "知识点标题"
    },
    "content": {
      "type": "string",
      "description": "知识点详细内容"
    },
    "difficulty": {
      "type": "integer",
      "minimum": 1,
      "maximum": 5,
      "description": "难度等级 1-5"
    },
    "frequency": {
      "type": "string",
      "enum": ["高频", "中频", "低频", "未考"],
      "description": "历年考点频率"
    },
    "related_drugs": {
      "type": "array",
      "items": {"type": "string"},
      "description": "关联药品条目ID列表"
    },
    "source": {
      "type": "string",
      "description": "来源标注"
    },
    "key_points": {
      "type": "array",
      "items": {"type": "string"},
      "description": "关键考点提炼"
    }
  },
  "required": ["point_id", "subject", "chapter_id", "title", "content", "difficulty"]
}