Status: IN
The recursive structure infrastructure (Composite trees + Iterator traversal + Visitor operations) uses the controlled-sharing meta-pattern (Flyweight via factory) as its memory-efficiency layer, yielding a complete governance stack for recursive structures: access (Iterator), computation (Visitor), memory (Flyweight), and structural unity (Composite) — all operating through the composition paradigm.
Two separately characterized subsystems (recursive infrastructure and cross-category sharing) unify into a single governance stack
Depends on (SL): recursive-structure-complete-infrastructure, controlled-sharing-meta-pattern