Status: IN
Composite serves a dual architectural role as both engineered substrate and natural behavioral generator: as substrate, its uniform tree abstraction receives three independent infrastructure layers (Iterator traversal, Flyweight sharing, Visitor operations); as generator, its parent references and recursive structure naturally give rise to behavioral capabilities (Chain of Responsibility routing, compositional iteration) that emerge from the structure itself rather than being externally imposed.
Composite's dual role — engineered infrastructure recipient + emergent behavioral pattern generator — makes it the catalog's structural keystone
Depends on (SL): composite-generates-behavioral-patterns, recursive-structure-complete-infrastructure