{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Model Index",
  "description": "机器可读模型索引 schema。",
  "type": "object",
  "required": ["index_version", "last_updated", "models"],
  "properties": {
    "index_version": {"type": "string", "description": "索引版本。"},
    "last_updated": {"type": "string", "description": "索引最后更新时间。"},
    "models": {
      "type": "array",
      "description": "模型索引条目。",
      "items": {
        "type": "object",
        "required": [
          "model_id",
          "model_name",
          "model_type",
          "pipeline_position",
          "model_file",
          "card_file",
          "source_article_count",
          "source_evidence_count",
          "regression_case_count",
          "stability_level",
          "regression_status",
          "status",
          "last_updated"
        ],
        "properties": {
          "model_id": {"type": "string", "description": "模型 ID。"},
          "model_name": {"type": "string", "description": "模型中文名称。"},
          "model_type": {"type": "string", "description": "模型类型。"},
          "pipeline_position": {"type": "string", "description": "模型所在流程位置。"},
          "model_file": {"type": "string", "description": "模型 JSON 文件路径。"},
          "card_file": {"type": "string", "description": "Markdown 模型卡文件路径。"},
          "source_article_count": {"type": "integer", "description": "引用来源文章数量。"},
          "source_evidence_count": {"type": "integer", "description": "引用证据片段数量。"},
          "regression_case_count": {"type": "integer", "description": "回归测试用例数量。"},
          "stability_level": {"type": "string", "description": "稳固性等级。"},
          "regression_status": {"type": "string", "description": "回归测试状态。"},
          "status": {"type": "string", "description": "索引条目状态，例如 draft、active、deprecated、draft_pre_contract。"},
          "last_updated": {"type": "string", "description": "模型 JSON 最后更新日期。"}
        }
      }
    }
  }
}