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saopig1andClaude Opus 4.8
45f5d236c1
`store.elapsed` is a Pinia getter (a cached Vue computed) that interpolates with `Date.now()`. Because `Date.now()` is not a reactive dependency, the computed only re-ran on WebSocket pushes / the 3s server poll, so the bottom progress bar jumped ~3s at a time and lyric highlighting lagged ~half a line — even though the consumers read it from a 60fps requestAnimationFrame loop. Add a pure `interpolateElapsed()` helper and a non-cached `liveElapsed()` store action. The per-frame consumers now call `liveElapsed()` so the value advances every frame instead of returning a frozen cache: - web/src/components/Player.vue (desktop progress bar, rAF) - web/src/App.vue (mobile progress bar, rAF) - web/src/views/Lyrics.vue (lyric highlight, 500ms interval) pause() now freezes at the live value rather than a possibly-stale cached one. The `elapsed` getter is refactored onto the same helper (behaviour unchanged). Adds web/src/stores/elapsed.test.ts covering the time-advancing interpolation, paused freeze, no-anchor, and duration-clamp cases. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>