Updated all documentation, configuration, and code references from 'Xget for Chrome' to 'Xget for Chromium' for consistency with supported browsers. This includes issue templates, workflow files, privacy and security policies, source code logs, manifest, and popup UI.
Converted all major documentation files (README, PRIVACY_POLICY, SECURITY, pull request template) to Chinese. Updated extension source files (background.js, content.js, popup.html, popup.js) to use Chinese comments and user-facing messages for improved localization and user experience.
xixu-me