📝 Changelog

✨ New Features

• 🧪 API Endpoint Testing: Test connection button to verify API endpoint configuration before saving
• 🎯 AI Provider Quick Selection: Dropdown menu with presets for OpenAI, Azure OpenAI, Anthropic (Claude), Google Gemini, and DeepSeek
• 🤖 Provider-Specific Models: Auto-fill appropriate model names based on selected provider
• 🔍 Smart Provider Detection: Automatically detect and display current provider based on stored endpoint URL

🔧 Technical Improvements

• Added real-time connection testing with detailed error messages
• Improved API key handling for testing (supports both new input and stored keys)
• Added provider-specific endpoint and model presets
• Enhanced UX with visual feedback during testing

✨ New Features

• 🌍 Internationalization (i18n) Support: Extension UI now supports both Chinese and English, automatically switching based on browser language
• 🔧 Custom API Endpoints: Support for any OpenAI-compatible API endpoint (Azure OpenAI, local LLMs, etc.)
• ⚙️ Model Configuration: Customize the AI model name for translation
• 📱 Advanced Settings: New collapsible advanced settings section in popup

🔧 Technical Improvements

• Added _locales/zh_CN/messages.json and _locales/en/messages.json for i18n
• Updated manifest.json to use i18n placeholders
• Enhanced error handling for custom endpoints
• Improved popup UI with better styling and organization
• Premium popup design with gradients, shadows, and smooth animations
• Enhanced advanced settings toggle with visual cues and arrow indicator

✨ Features

• Display bilingual subtitles on YouTube videos (original + translation)
• High-quality translation using OpenAI API
• API key stored locally for privacy protection
• Customizable target translation language
• Draggable subtitle positioning
• Clean and beautiful user interface

🔧 Technical Implementation

• Manifest V3 architecture
• Service Worker background script
• Content Script injection on YouTube pages
• Chrome Sync Storage for settings

⚠️ Known Issues

• When subtitles are dragged too low in fullscreen mode, they may not display correctly after exiting fullscreen
• Workaround: Drag subtitles to an appropriate position in fullscreen mode, then switch back to default view

🎉 First Release

• Implemented YouTube bilingual subtitle display functionality
• Integrated OpenAI API translation service
• Local storage of API keys and settings
• Support for multiple target languages
• Published to Chrome Web Store and Edge Add-ons