Editing suite: preview, thumbnails, resume, filmstrip, track swap, shader panels, drag-drop ghost#164
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- keep paused timeline preview on frozen media elements instead of composite overlay - make media list construction thumbnail-cache-only and non-decoding - generate media card posters lazily with bounded concurrency - gate timeline sprite generation behind includeSprite and cap sprite tiles
On resume from pause the engine called seekAll() on every active <video>, re-seeking even elements already frozen on the resume frame. That flushes each element's decode buffer and causes sustained stutter after resume (timeline preview only, worse with many elements). Drop the redundant seekAll on resume; syncFollowers already re-seeks only on >0.05s drift then plays, so an already-correct element resumes without a buffer flush. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Dragging media from the panel onto the timeline now shows a gray ghost at the exact target track and snapped frame range (NLE-style), instead of a whole-region highlight. Frontend-only; placement backend unchanged. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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The editing suite refined this session, now based directly on
main(the base+docs PR #158 has merged).(Re-created after the stacked base branch was deleted on #158 merge, which auto-closed the original #159.)
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