{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": ["meta", "features"],
  "properties": {
    "meta": {
      "type": "object",
      "required": ["prd_title", "extraction_date", "skill_used"],
      "properties": {
        "prd_title": { "type": "string", "description": "PRD 标题" },
        "extraction_date": { "type": "string", "description": "提取日期" },
        "skill_used": { "type": "string", "description": "使用的 Skill 名称" }
      }
    },
    "features": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["module", "feature_name", "description", "priority"],
        "properties": {
          "module": { "type": "string", "description": "所属模块" },
          "feature_name": { "type": "string", "description": "功能名称" },
          "description": { "type": "string", "description": "功能描述" },
          "inputs": {
            "type": "array",
            "items": { "type": "string" },
            "description": "输入参数列表"
          },
          "outputs": {
            "type": "array",
            "items": { "type": "string" },
            "description": "预期输出列表"
          },
          "preconditions": {
            "type": "array",
            "items": { "type": "string" },
            "description": "前置条件"
          },
          "constraints": {
            "type": "array",
            "items": { "type": "string" },
            "description": "约束条件"
          },
          "priority": {
            "type": "string",
            "enum": ["P0", "P1", "P2"],
            "description": "功能优先级"
          },
          "dependencies": {
            "type": "array",
            "items": { "type": "string" },
            "description": "依赖的其他功能名称"
          }
        }
      }
    }
  }
}