chore: 添加 .gitignore, LICENSE, README.md

.gitignore

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+# Dependencies
+node_modules/
+__pycache__/
+*.py[cod]
+*$py.class
+.venv/
+venv/
+env/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Build outputs
+dist/
+build/
+*.egg-info/
+
+# Logs
+*.log
+npm-debug.log*
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Test
+coverage/
+.pytest_cache/
+
+# Temp files
+*.tmp
+*.temp
+.cache/

LICENSE

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+MIT License
+
+Copyright (c) 2025 let5see
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Web2MCP
+
+将网页内容转换为大模型友好格式的工具集。
+
+## 项目结构
+
+```
+web2mcp/
+├── browser-extension/    # Chrome 浏览器扩展
+│   ├── manifest.json     # 扩展配置
+│   ├── popup.html        # 弹出界面
+│   ├── popup.js          # 弹出逻辑
+│   ├── content.js        # 内容提取脚本
+│   ├── content.css       # 样式
+│   └── icons/            # 图标
+├── mcp.py                # Python 网页抓取脚本
+└── README.md
+```
+
+## 功能
+
+### 浏览器扩展
+
+一个 Chrome 扩展，用于截取网页内容并转换为结构化格式。
+
+**特性：**
+- 🎯 区域框选提取
+- 📄 整页内容提取
+- 📝 多格式输出（Markdown / JSON / XML）
+- 📋 自动复制到剪贴板
+
+**安装：**
+1. 打开 Chrome，访问 `chrome://extensions/`
+2. 开启右上角 **开发者模式**
+3. 点击 **加载已解压的扩展程序**
+4. 选择 `browser-extension` 文件夹
+
+### Python 脚本
+
+用于抓取网页并提取结构化内容。
+
+```bash
+python mcp.py
+```
+
+## 输出格式示例
+
+### Markdown
+```markdown
+# 标题
+
+这是一段文字内容。
+
+- 列表项 1
+- 列表项 2
+```
+
+### JSON
+```json
+[
+  {
+    "type": "heading",
+    "level": 1,
+    "content": "标题"
+  },
+  {
+    "type": "paragraph",
+    "content": "这是一段文字内容。"
+  }
+]
+```
+
+## 依赖
+
+**Python：**
+```bash
+pip install requests beautifulsoup4
+```
+
+## License
+
+[MIT](LICENSE)