fix: update image file extensions for Perpetual Calendar and Image Annotator icons in Home component

feat: add Perpetual Calendar component and update routing, localization, and model rankings with new entries and adjustments

feat: add new AI models o3 and o4-mini with updated pricing and release details across multiple data files

feat: add new AI models GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano with updated pricing and release details in relevant data files

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