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Miguel Ángel
89f9ca196d
Enable trim-start and trim-end for all authored timeline elements (divs, sections, compositions) — not just video/audio/img. The deterministic-window gate was overly restrictive since all non-implicit elements have authored data-start/data-duration that define their timeline window. Replace iframe reload after resize/move with direct DOM attribute patching via patchIframeDomTiming(). This eliminates playhead-jump-to-zero, visual blinking, and race conditions from file-watcher echoes. File persistence runs in a serialized background queue (persistTimelineEdit + enqueueEdit) so rapid edits don't overwrite each other. Add mediabunny-based media probe service (mediaProbe.ts) for fast metadata extraction from file headers. Timeline elements missing sourceDuration are enriched asynchronously without waiting for DOM loadedmetadata events. Tune the runtime media preloader: lower lazy threshold from 6 to 3 clips, add 3s lookbehind window for reverse scrub, adaptive promoted-clip cap. Deduplicate getTimelineEditCapabilities — computed once in TimelineCanvas and passed as a prop to TimelineClip instead of recomputing per clip. Remove dead PlaybackAdapter re-export from useTimelinePlayer — all consumers import directly from playbackTypes.