Write comprehensive PRDs for AI Agent products—covering agent identity, capability architecture (skills, tools, memory, RAG, workflows), behavior specifications, safety guardrails, and evaluation frameworks. Use when: designing conversational agents, autonomous agents, copilots, multi-agent systems, or any LLM-powered agentic application. Triggers: 'AI agent PRD', 'agent product requirements', 'design AI agent', 'agent capability spec', 'LLM agent requirements', '智能体PRD', '智能体需求文档', '对话机器人PRD', '多智能体系统需求'. Anti-triggers: '传统PRD（非智能体）', '只润色提示词/只写Prompt', '只写用户故事/验收标准但不涉及工具调用、记忆或RAG'.

Extract complete, replicable engineering specifications from existing codebases. Produces documentation detailed enough to fully replicate a project without seeing the original source code—even using a different tech stack. Use when: analyzing existing projects, documenting legacy systems, creating technical specs from code, preparing for system migration, or onboarding new teams. Triggers: 'extract spec from code', 'document codebase', 'analyze project architecture', 'create spec from existing system'.

目标：把“产品 PRD（总纲）”转化为**前端可复刻实现**的 UI/UX 研发规格文档包（UI 行为、状态机、数据/事件契约、A11y、验收与测试计划），并让目录结构本身就能传达“做到了什么/没做到什么”。

本 skill 提供一个两阶段工作流：**先审计出报告，再由人类勾选需要整改的条目，最后执行选择性整改**。核心目标是“合规审查可取证”和“整改最小化、默认不改业务逻辑”。

Build a new skill using a repeatable, high-signal workflow that separates **methodology discovery** from **pack**aging**—without requiring any other skills to be installed or invoked.

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

Use when a user asks to review, interpret, or audit an AI agent skill (SKILL.md plus bundled scripts/references/assets) for capabilities, triggering behavior, tool/command usage, safety & privacy risk, supply-chain provenance, quality gaps, and improvement recommendations; also use when validating a skill before installing or deploying it.

A portable, reproducible UI/UX spec standard: scan a frontend repo for UI sources and scaffold a ui-ux-spec documentation bundle (tokens, global styles, components, patterns, pages, a11y). Also supports plan-driven UI-only refactors based on an existing ui-ux-spec. Excludes business logic and domain workflows.