feat(i18n): add multilingual support for documentation with Chinese and English content

docs/index.md

@@ -1,45 +1,42 @@
-# 无限画布文档索引
+# Infinite Canvas Documentation Index
 
-## 项目介绍
+## Overview
 
-- [快速开始](/docs/overview/quick-start)
-- [功能介绍](/docs/overview/features)
-- [Render 部署](/docs/overview/render)
-- [Docker 部署](/docs/overview/docker)
-- [第三方 GitHub 提示词仓库](/docs/overview/third-party-prompt-repositories)
+- [Quick Start](/docs/overview/quick-start)
+- [Features](/docs/overview/features)
+- [Deploy on Render](/docs/overview/render)
+- [Docker Deployment](/docs/overview/docker)
+- [Third-party GitHub Prompt Repositories](/docs/overview/third-party-prompt-repositories)
 
-## 操作手册
+## Canvas Guide
 
-- [画布节点操作手册](/docs/canvas/canvas-node-manual)
-- [画布快捷键](/docs/canvas/canvas-shortcuts)
+- [Canvas Node Guide](/docs/canvas/canvas-node-manual)
+- [Canvas Shortcuts](/docs/canvas/canvas-shortcuts)
 
-## 开发与数据
+## Development and Data
 
-- [本地开发](/docs/development/local-development)
-- [画布数据结构](/docs/development/canvas-data-structure)
+- [Local Development](/docs/development/local-development)
+- [Canvas Data Structure](/docs/development/canvas-data-structure)
+- [How the Local Codex Connection Works](/docs/development/local-codex-canvas)
 
-## 商务合作
+## Business
 
-- [开源协议](/docs/business/license)
-- [贡献者协议](/docs/business/cla)
-- [商务合作](/docs/business/business)
+- [Open-source License](/docs/business/license)
+- [Contributor License Agreement](/docs/business/cla)
+- [Business Cooperation](/docs/business/business)
 
-## 支持与安全
+## Support and Security
 
-- [漏洞提交](/docs/support/security)
-- [赞助支持](/docs/support/sponsor)
+- [Report a Vulnerability](/docs/support/security)
+- [Sponsor the Project](/docs/support/sponsor)
 
-## 项目进度
+## Project Progress
 
-- [更新日志](/docs/progress/changelog)
-- [待测试](/docs/progress/pending-test)
+- [Changelog](/docs/progress/changelog)
+- [Pending Tests](/docs/progress/pending-test)
 - [TODO](/docs/progress/todo)
 
-## 说明
+## Notes
 
-- 当前画布项目和“我的素材”主要保存在浏览器本地，跨设备可自行配置 WebDAV 同步。
-- AI API Key 保存在浏览器本地，并由前端直接请求 OpenAI 兼容接口。
-
-## 原理说明
-
-- [本地 Codex 连接画布原理](/docs/development/local-codex-canvas)
+- Canvas projects and My Assets are primarily stored in the browser. WebDAV can be configured for cross-device synchronization.
+- The AI API key is stored in the browser, which sends requests directly to OpenAI-compatible endpoints.