Improve desktop site user agent handling

…rity, and enhance UI/UX

- Display colored highlight messages in Check for Updates overlay: primary theme color (colorPrimary) for "You are using the latest version!" and warning color (colorError) for "New update available!".
- Reset update check text color to the default text color on starting a new verification.
- Allow drag-and-drop reordering for quick access slots, bookmarks, and browser tabs.
- Improve overall UI aesthetics by introducing polished frosted-glass (glassmorphism) design elements.
- Implement GitHub Sponsors card and list on the start page with a YouTube Super Chat style layout.
- Fetch sponsors data asynchronously from GitHub (`sponsors.json`) with secure sanitization (HTML escape, URL regex, character limit) and memory caching (LruCache) for avatars.
- Support all 7 Super Chat color tiers automatically mapped based on the USD sponsorship amount.
- Add a settings toggle to hide the sponsors list with a collaborative warning dialog (ぴえん dialog) and display a randomly rotated "🥺" on the start page when hidden.
- Configure the "Open Sponsors Page" buttons to open in an external browser using ACTION_VIEW.
- Restructure the settings UI to display current configurations compactly and provide upgrade-on-click details.
- Optimize app performance, image decoding (RGB_565), and resource utilization.
- Upgrade dependency libraries and build configurations in `libs.versions.toml` and `build.gradle.kts`.
- Enhance browser security, SSL/TLS validation dialogs, and permission boundaries.
- Modularize navigation, bookmark management, UI setup, and permission handlers.

… method parameter