{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "keyword_schema.json",
  "title": "BiddingKG 关键词字典 YAML Schema",
  "description": "定义 dl/rules/keywords/*.yaml 的合法结构",
  "type": "object",
  "required": ["version", "dictionary_id", "entries"],
  "properties": {
    "version": {
      "type": "integer",
      "const": 1
    },
    "dictionary_id": {
      "type": "string",
      "description": "字典唯一标识",
      "pattern": "^[a-z][a-z0-9_]*$"
    },
    "description": {
      "type": "string"
    },
    "source_file": {
      "type": "string",
      "description": "原始 CSV/Excel 文件名（迁移溯源用）"
    },
    "columns": {
      "type": "array",
      "description": "列定义",
      "items": {"type": "string"}
    },
    "entries": {
      "type": "array",
      "description": "字典条目列表",
      "items": {
        "type": "object",
        "additionalProperties": true
      }
    }
  },
  "additionalProperties": false
}