Version 0.2.1

• Added adaptive annotation layouts for narrow sidebars and compact interfaces.
• Added simultaneous Jyutping, Pinyin, and English annotation layers.
• Improved Chinese-language detection and exclusion of non-Chinese content.
• Added an expanded offline dictionary, saved contexts, custom entries, and review tools.
• Added Focused Chinese Reader, speech controls, caption annotations, and site profiles.
• Improved Simplified/Traditional conversion without breaking annotated page layouts.
• Improved compatibility with Mango Languages, Wikipedia, YouTube, and dynamic pages.
• Redesigned the extension popup and fixed scrolling, sizing, performance, and readability issues.
• All processing and saved learning data remain local.