feat: Improve mobile experience by enabling card size sliders and long-press card previews.

docs/development/devlog/2025-12-17-024600_mobile_long_press_preview.md

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+# Mobile Long Press Card Preview
+
+## Status
+- [x] Research current implementation of `PackCard` and `CardPreview`
+- [x] Implement long-press detection in `PackCard` (Found existing implementation in `CardPreview`)
+- [x] Prevent default browser context menu on card images
+- [x] Trigger preview on long-press only for small screens (or generally if touch)
+- [x] Verify implementation
+
+## Context
+User reported that long-pressing a card on mobile opens the browser menu (download image context menu).
+Goal: Long press should show the card preview instead.
+
+## Implementation Details
+- Modified `CardHoverWrapper` in `CardPreview.tsx` to prevent `contextmenu` event default behavior on mobile devices when an image is present.
+- This ensures the custom long-press timer has time to trigger the preview without the system menu interfering.
+- Logic uses `isMobile && hasImage` to target specific scenario.

docs/development/devlog/2025-12-17-024800_mobile_card_slider.md

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+# Mobile Card Size Slider
+
+## Status
+- [x] Locate the card size slider component (`CubeManager` and `DraftView`)
+- [x] Analyze why it is hidden on small screens (`hidden` utility classes)
+- [x] Modify layout to ensure it is visible on mobile
+- [x] Determine if layout adjustments are needed (Reduced width on `DraftView`)
+- [x] Verify implementation (Code applied)
+
+## Context
+User reported that the card size adjustment bar is missing on small screens.
+The fix was applied to both the Cube Manager (pack review) and Draft View (live drafting).
+
+## Changes
+- **CubeManager.tsx**: Removed `hidden sm:flex` from the slider container. It is now always `flex`.
+- **DraftView.tsx**: Removed `hidden md:flex` and adjusted width to `w-24 md:w-32` to fit better on small screens.