Status: OUT
Interpreter's validation of the recursive subsystem's completeness — demonstrating that a demanding client requiring all infrastructure layers (Composite, Iterator, Visitor, Flyweight) can be fully served — confirms production readiness only while Composite's transparency-vs-safety tradeoff does not undermine the structural foundation that the entire subsystem rests upon.
Interpreter needs the full recursive subsystem but inherits Composite's safety tension at the base
Depends on (SL): interpreter-primary-client-of-recursive-subsystem, recursive-structures-self-contained-subsystem