This reverts commit 77edfaa867.
Restores the full Apple Music-style lyrics visuals from PR #205 on Linux:
rAF spring scroller, per-line scale transforms, text-shadows, title glow,
album-art/play-button outer glows, mesh-blob radial gradients, and the
FS-art opacity crossfade. PR #205's author noticed the Linux codepath
lost the intended feel — the CPU tradeoff is accepted.
The trigger-ref fix from 25537f27 for the lyrics menu stays in place.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
WebKitGTK on Linux runs with WEBKIT_DISABLE_COMPOSITING_MODE=1, so every
GPU-only effect is software-rasterised per frame. The fullscreen player
piled up large blur shadows, per-line scale transforms, oversized
radial-gradients with color-mix() and a 60 fps rAF spring on top — CPU
saturated and FPS dropped to ~10.
Linux-only via existing html.no-compositing class:
- Apple-style lyrics: drop transform: scale and 48 px / 32 px text-shadow
- Rail-style lyrics: drop 28 px text-shadow + scaleX
- Track title: 40 px glow → 6 px drop-shadow
- Album art wrap + play button: drop accent-coloured outer glows
- Mesh blobs: flatten 130 % radial-gradient + color-mix to solid #06060e
and remove the 400 ms background transition
- Portrait wrap: drop translateZ(0) GPU-layer hint
- FS art: instant cover swap (no opacity crossfade)
- SpringScroller: replace rAF spring with native scrollTo({behavior:'smooth'})
- FsSeekbar: cache last applied values, skip identical DOM writes
Dynamic accent on title / seekbar / play button is preserved.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>