chore(frontend): toolchain migration checkpoint + UI perf optimizations

Checkpoint of the in-progress frontend toolchain work (Vite pinned to ^6 after
the 7/8 rolldown build break, eslint-plugin-svelte v3 navigation/reactivity
fixes, CI/Dockerfile/manifest updates) together with three UI performance
optimizations (verified on the Vite 6 build):

- Critical CSS: move auth.css/music.css off the global path into their route
  chunks (login/device/nextcloud-login, music) -- -25% gzipped critical CSS
  (~5.4 KB) on every non-auth/non-music page load.
- relativeTimeAgo: cache the Intl.RelativeTimeFormat (was rebuilt per call, once
  per row per render) -- 22.7x faster date formatting in large lists.
- Virtualize search results and grouped trash (list view) via VirtualList -- DOM
  rows mounted stay ~constant (~27) instead of O(N) (94.6% fewer for 500 hits).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

This commit is contained in:

DioCrafts

2026-06-21 19:03:07 +02:00

parent 778d551090

commit eef0ef5522

36 changed files with 1147 additions and 1420 deletions

									
										frontend/src/routes/device/+page.svelte
									
		+2
		
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				@@ -1,4 +1,6 @@

				<script lang="ts">

					// Route-scoped auth styles (this page uses the .auth-* classes).

					import '$lib/styles/ported/auth.css';

					import { errorMessage } from '$lib/utils/errors';

					import { page } from '$app/state';

					import { onMount } from 'svelte';