Final UI Changes

[RKBoss6]

This is the final, mergeable version of #4078
This must be merged before the corresponding index.js changes in EspruinoAppLoaderCore, #82

[Copilot]

Pull request overview

This PR implements final UI changes to the CSS styling for the Espruino App Loader, representing a comprehensive redesign and reorganization of the stylesheet. The changes modernize the visual appearance with rounded corners, improved spacing, animations, and better responsive behavior. This work is a prerequisite for corresponding changes in EspruinoAppLoaderCore.

Key Changes:

• Complete CSS restructure with improved organization (navigation, buttons, tabs, app tiles sections)
• Enhanced visual design with rounded borders, shadows, animations (favorite button squish effect)
• Improved responsive layout with flexbox-based app tiles and better mobile support

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

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[RKBoss6]

Actually, before we merge, I wanted to try out a feature where app tiles that need to be updated show in a different color, just to differentiate better and see at a glance what needs to be changed. I'll work on that, and let you know the results

[RKBoss6]

This looks good to merge then!

[gfwilliams]

Thanks! I'll just wait until espruino/EspruinoAppLoaderCore#82 is sorted and then will put it all in together

[gfwilliams]

Merging now as espruino/EspruinoAppLoaderCore#82 is in