Android: MusicRepository.coverArtUrl/streamUrl built a fresh SubsonicClient
per call — each spins up (and never closes) a Ktor HttpClient. That ran for
every cover on every recomposition, causing heavy GC/alloc churn (and a leak)
that showed up as scroll/tab lag. Reuse the cached ClientHolder client for URL
building instead.
Web: the home scroll-row arrows called getBoundingClientRect on every scroll
event (layout thrashing). Split it: only toggle arrow visibility on scroll
(rAF-throttled); do the getBoundingClientRect vertical-centering only on
resize/content change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
HoneyandClaude Opus 4.8
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