feat: enhance WechatFormatter with new floating copy button and improved header layout for better user interaction

feat: update AI model rankings and add new models including Llama 4 and adjustments to existing scores across various categories

feat: enhance ImageAnnotator with responsive design, CORS handling, and error messaging for improved user experience

feat: update WechatFormatter styles for headings and list items to improve visual consistency and readability

feat: add new AI model releases for Gemini 1.5, Gemma, and Gemma 3, including performance enhancements and open-source details

feat: Update model rankings and release details, including new Gemini-2.5 model and enhanced features for DeepSeek-V3