输入 PRD 文档（Markdown 或 PDF），以开发架构师的角色编写字段/接口级精度的功能设计文档（Functional/Technical Design Doc），以 Markdown 格式保存到当前项目 markdown/ 目录。这份文档是开发者、reviewer、测试者三方协作的唯一契约——三者互相隔离、不能看对方的产出物（测试者看不到代码，reviewer 不参与开发），所以必须把每个功能点写到可直接落地、可直接测试的精度：接口请求/响应字段、错误码、状态机、数据模型、异常边界场景都要明确。
Install
npx skills add digoal/blog --skill product-feature-tech-designnpx skills add digoal/blog --skill product-feature-tech-design -a claude-code -gnpx skills add digoal/blog --skill product-feature-tech-design -a codex -ggemini skills install https://github.com/digoal/blog.git --path skills/skills_for_claude_web/product-feature-tech-designgh skill install digoal/blog product-feature-tech-designgit clone --depth 1 https://github.com/digoal/blog /tmp/digoal__blog
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/digoal__blog/skills/skills_for_claude_web/product-feature-tech-design ~/.claude/skills/product-feature-tech-design # Claude Code
cp -R /tmp/digoal__blog/skills/skills_for_claude_web/product-feature-tech-design ~/.agents/skills/product-feature-tech-design # Codex, Cursor, Gemini CLI, Copilot, OpenCode