- HOLD_SYNC_MUTATION_TYPES: add add-motion-path (load-bearing — addMotionPathToScript
authors past t=0 → first-frame snap-to-(0,0) without the hold), update-meta,
shift-positions, scale-positions, split-animations. (add stays out: flat tweens
only, syncPositionHoldsBeforeKeyframes is a no-op for non-keyframed tweens.)
- init.ts: timedClip in-flow/leaf WeakMaps now invalidate on clipTreeSignature change;
visible/hidden branches both go through isTimedClipInFlow (was .get() by accident).
- keyframesWriteRotation mirrors keyframesWritePosition so a rotation-only keyframe set
strips the stale --hf-studio-rotation channel.
Miguel Ángel
1612463b5b