Enhance desktop UI by allowing wider window layout

[KostaMadorsky]

Requested by: @KostaMadorsky via YakShaver.ai 🦬
cc: @KostaMadorsky, @calumjs, @ricksu978, @adamcogan

Hi Team!

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Pain

Users report that ⭐ YakShaver Desktop App appears to be optimized for mobile width even when running on desktop. The current fixed or narrow window width results in excessive vertical scrolling, especially for text-heavy sections. On larger desktop screens, the UI should be able to take advantage of additional horizontal space to improve readability and reduce scrolling.

Acceptance Criteria

1. The desktop app window can expand to a wider maximum width on desktop screens
2. Text-heavy views reflow to use the additional horizontal space
3. Vertical scrolling is reduced when the window is widened
4. The UI remains readable and visually balanced at wider widths
5. Mobile and smaller screen layouts remain unaffected

Screenshot

Figure: Desktop UI width too narrow, causing excessive scrolling