- Replaced `SettingsPageClient` with `SettingsIndexPageClient` to fetch and display user preferences on the settings page.
- Integrated `userPreferencesService` to retrieve all preferences asynchronously, enhancing data handling.
- Refactored theme management in `ThemeContext` to use `updateViewPreferences` for saving theme changes, improving error handling and user feedback.
- Marked the task for creating dedicated config sub-pages as complete in TODO.md.
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