Adding main md documents translated into English for better worldwide accessibility

CHANGELOG.md

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 # 更新日志
+[🇬🇧 English Version here](CHANGELOG_en.md)
 
 本文档记录项目的所有重要变更。
 

CHANGELOG_en.md

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+# Changelog
+
+This document records all significant changes made to the project.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),  
+and the versioning follows [Semantic Versioning](https://semver.org/).
+
+## [Unreleased]
+
+### Added
+- First open-source release  
+- Complete GitHub documentation (README, CONTRIBUTING, LICENSE, etc.)  
+- Docker support  
+- Environment variable configuration template  
+
+### Changed
+- Improved README structure  
+- Enhanced code comments  
+
+---
+
+## [1.0.0] - 2025-01-XX
+
+### Added
+- 🚶 **Blind Path Navigation System**
+  - Real-time tactile paving detection and segmentation  
+  - Intelligent voice guidance  
+  - Obstacle detection and avoidance  
+  - Sharp turn detection and alerts  
+  - Optical flow stabilization  
+
+- 🚦 **Crosswalk Assistance**
+  - Crosswalk recognition and direction detection  
+  - Traffic light color recognition  
+  - Alignment guidance system  
+  - Safety reminders  
+
+- 🔍 **Object Recognition and Search**
+  - YOLO-E open-vocabulary detection  
+  - MediaPipe hand tracking and guidance  
+  - Real-time object tracking  
+  - Grasp action detection  
+
+- 🎙️ **Real-Time Voice Interaction**
+  - Alibaba Paraformer ASR  
+  - Qwen-Omni-Turbo multimodal dialogue  
+  - Intelligent command parsing  
+  - Context awareness  
+
+- 📹 **Video and Audio Processing**
+  - Real-time WebSocket streaming  
+  - Audio-video synchronized recording  
+  - IMU data fusion  
+  - Multi-channel audio mixing  
+
+- 🎨 **Visualization and Interaction**
+  - Real-time web monitoring interface  
+  - IMU 3D visualization  
+  - Status dashboard  
+  - Chinese-language interface  
+
+### Tech Stack
+- FastAPI + WebSocket  
+- YOLO11 / YOLO-E  
+- MediaPipe  
+- PyTorch + CUDA  
+- OpenCV  
+- DashScope API  
+
+### Known Issues
+- [ ] Possible lag on low-end GPUs  
+- [ ] No GPU acceleration support on macOS  
+- [ ] Some Chinese fonts render incorrectly on Linux  
+
+---
+
+## Versioning Guidelines
+
+### Major
+- Incompatible API changes  
+
+### Minor
+- Backward-compatible new features  
+
+### Patch
+- Backward-compatible bug fixes  
+
+---
+
+[Unreleased]: https://github.com/yourusername/aiglass/compare/v1.0.0...HEAD  
+[1.0.0]: https://github.com/yourusername/aiglass/releases/tag/v1.0.0

PROJECT_STRUCTURE.md

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 # 项目结构说明
+[🇬🇧 English Version here](PROJECT_STRUCTURE_en.md)
 
 本文档详细说明项目的目录结构和主要文件的作用。