## Summary
Backporting #5292 to core/1.27 branch to fix desktop installation and
startup UX issues.
## What's Changed
This is a manual backport of commit
b0f81b2245 which reworks the desktop
install and startup user experience.
### Merge Conflicts Resolved
The automatic backport failed with conflicts in:
- `src/components/install/GpuPicker.vue` - Resolved by keeping the
changes made in the PR
- `src/components/install/MirrorsConfiguration.vue` - Resolved by
keeping the file deletion from the PR
- `src/components/install/mirror/MirrorItem.vue` - Resolved by
combination merge (all changes)
- `src/views/ServerStartView.vue` - Resolved by combination merge (all
changes)
## Original PR
- PR: #5292
- Commit: b0f81b2245
- Title: Rework desktop install / startup UX
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5756-Backport-1-27-Rework-desktop-install-startup-UX-5292-2786d73d365081668f4dc16694c51185)
by [Unito](https://www.unito.io)
* temp: move tailwind calls out of the layer
* temp: ts tailwind config
* upgrade: Tailwind v4
This got a little out of hand.
Had to add a relative reference to the stylesheet in any component that uses @apply instead of the utility classes directly.
* upgrade: bg-opacity is now a modifier
* fix: Classic menu buttons assume a border
* Update test expectations [skip ci]
* fix: New preflight removal pattern
* fix: Skeletons don't have skin
* Update test expectations [skip ci]
* fix: Missing @reference
* [auto-fix] Apply ESLint and Prettier fixes
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