Function node_transform_context 

pub fn node_transform_context(
    doc: &Document,
    id: NodeId,
    root_frame: f64,
) -> Option<NodeTransformContext>

Resolve one attached node’s parent/world transforms.

This follows the node’s actual parent chain and applies the same Layer time-stretch convention used by the evaluator. It intentionally does not traverse through Precomp references because precomposition contents live in a separate composition tree.