Add smart-tree MCP server to File Systems section

Added 8b-is/smart-tree to all language README files including the main English README.md
with appropriate translations. Smart Tree is an AI-native directory visualization tool
with semantic analysis, ultra-compressed formats for AI consumption, and 10x token reduction.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README-zh.md

@@ -336,6 +336,7 @@ Web 内容访问和自动化功能。支持以 AI 友好格式搜索、抓取和
 
 - [@modelcontextprotocol/server-filesystem](https://github.com/modelcontextprotocol/servers/tree/main/src/filesystem) 📇 🏠 - 直接访问本地文件系统。
 - [@modelcontextprotocol/server-google-drive](https://github.com/modelcontextprotocol/servers/tree/main/src/gdrive) 📇 ☁️ - Google Drive 集成，用于列出、阅读和搜索文件
+- [8b-is/smart-tree](https://github.com/8b-is/smart-tree) 🦀 🏠 🍎 🪟 🐧 - AI 原生目录可视化，具有语义分析、AI 消费的超压缩格式和 10 倍令牌减少。支持具有智能文件分类的量子语义模式。
 - [hmk/box-mcp-server](https://github.com/hmk/box-mcp-server) 📇 ☁️ - Box 集成，支持文件列表、阅读和搜索功能
 - [mark3labs/mcp-filesystem-server](https://github.com/mark3labs/mcp-filesystem-server) 🏎️ 🏠 - 用于本地文件系统访问的 Golang 实现。
 - [mamertofabian/mcp-everything-search](https://github.com/mamertofabian/mcp-everything-search) 🐍 🏠 🪟 - 使用 Everything SDK 实现的快速 Windows 文件搜索