fix(path_fiddle): destroy scenes before artboards to avoid UAF #65
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`clear_scenes()` previously cleared `artboards` before `scenes`. Since `Scene` objects are constructed from `Artboard` instances and may hold raw references back into them, this ordering risked use-after-free during `Scene` destruction. Reorder the clears to: scenes → artboards → viewModelInstances, ensuring dependencies are released in safe order.
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clear_scenes()previously clearedartboardsbeforescenes. SinceSceneobjects are constructed fromArtboardinstances and may hold raw references back into them, this ordering risked use-after-free duringScenedestruction.Reorder the clears to: scenes → artboards → viewModelInstances, ensuring dependencies are released in safe order.