Implement Default 2x Zoom with Cross-Browser Support

[azayrahmad]

I have implemented a default 2x zoom for the website as requested.

Key changes include:

1. System-Wide Scaling: The OS now starts with a 2x scale by default. This is handled by a new ScreenManager logic that uses the non-standard but highly effective CSS zoom property where supported (Chrome, Edge, Safari), and a robust transform: scale() fallback for Firefox.
2. Coordinate Accuracy: To ensure "ctrl-scroll" like behavior, I've updated the window management system (os-gui), desktop icon management, and several core applications (Solitaire, Spider Solitaire, Help) to correctly translate mouse/touch coordinates into the scaled coordinate space. This ensures dragging and clicking remain precise regardless of the zoom level.
3. User Control: A new "Scaling" slider has been added to the Display Properties application under the Settings tab, allowing users to adjust the zoom level between 1x and 3x. The setting is persisted in localStorage.
4. Visual Improvements: The CRT scanlines effect has been moved to the main screen container so it scales naturally with the rest of the UI, maintaining the retro look at higher zoom levels.
5. Boot Integration: The scaling is applied early in the boot process, ensuring the BIOS-style boot terminal is also correctly sized.

These changes make the interface much more accessible and user-friendly, especially on mobile and high-resolution displays.

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PR created automatically by Jules for task 5517616594155683235 started by @azayrahmad

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