[WIP] feat: add mini-muse - AI web app generator example

mini-muse/.env.example

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+# Anthropic API Configuration
+# Option 1: Use API Key (direct Anthropic API)
+ANTHROPIC_API_KEY=sk-ant-your-api-key-here
+
+# Option 2: Use custom proxy endpoint
+# ANTHROPIC_BASE_URL=https://your-proxy-endpoint.com/anthropic
+# ANTHROPIC_AUTH_TOKEN=your-auth-token-here

mini-muse/CLAUDE.md

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+# Mini-Muse 项目规范
+
+## 文档同步要求
+
+每次通过 Claude Code 修改代码实现后，**必须**检查并同步更新 `docs/design.md` 设计文档：
+
+1. **新增功能**：在设计文档中补充对应的模块描述、数据流、API 接口
+2. **架构变更**：更新架构图（使用 Mermaid 语法）和模块关系
+3. **接口变更**：更新 API 路由表、请求/响应格式
+4. **删除功能**：从文档中移除对应描述，避免文档与代码不一致
+
+设计文档 `docs/design.md` 应包含：
+- 项目概述与核心功能
+- 系统架构图（Mermaid）
+- 技术栈说明
+- 后端模块划分与职责
+- 前端页面与组件结构
+- API 接口定义
+- 数据流与核心流程（SSE、AI Agent Loop 等）
+- 关键设计决策及原因

mini-muse/README.md

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+# Mini-Muse
+
+AI-powered web application generator. Describe what you want, and Mini-Muse uses Claude as an AI agent to generate a complete React + Tailwind project.
+
+## Features
+
+- Natural language to web app generation
+- Real-time progress streaming via SSE
+- AI agent loop with tool use (analyze, plan, generate, validate)
+- Live preview and file download
+
+## Tech Stack
+
+- **Backend**: Egg.js 3 + TypeScript
+- **Frontend**: React 18 + Vite + Tailwind CSS
+- **AI**: Anthropic Claude API (tool use)
+
+## Quick Start
+
+### Prerequisites
+
+- Node.js >= 18
+- npm or other package manager
+
+### 1. Install dependencies
+
+```bash
+# Backend
+npm install
+
+# Frontend
+cd frontend && npm install && cd ..
+```
+
+### 2. Configure environment
+
+```bash
+cp .env.example .env
+# Edit .env with your Anthropic API key
+```
+
+### 3. Build frontend
+
+```bash
+cd frontend && npm run build && cd ..
+```
+
+### 4. Start
+
+```bash
+# Development
+npm run dev
+
+# Production
+npm run build && npm start
+```
+
+The app will be available at http://127.0.0.1:7001
+
+## Documentation
+
+See [docs/design.md](docs/design.md) for detailed architecture and design documentation.