Status: IN
Decorator's transparent enclosure (single-child composition with compatible interfaces) is structurally identical to a degenerate Composite restricted to one child, revealing that wrapping and recursive composition share a common structural root — the difference is purely one of intent (responsibility augmentation vs. part-whole aggregation).
Two independent characterizations converge on structural identity with Composite
Depends on (SL): decorator-transparent-enclosure, decorator-degenerate-composite-one-child