Missing Search Engine Customization Settings

Description: The Arcsphere application currently lacks any user-facing settings to modify the default search engine. Users are locked into using Google/Bing with no visible option in the interface to switch to alternative providers.
Steps to Reproduce:
- Open the Arcsphere application.
- Navigate through all available Settings menus.
- Observe that there is no "Search Engine," "Search Preferences," or "Default Browser" configuration section available to the user.
Expected Result: There should be a settings menu that allows users to choose their preferred search engine (e.g., DuckDuckGo, Brave).
Actual Result: The app defaults to Google/Bing for all queries, and there is no setting available to change this behavior.