Status: OUT
The recursive subsystem's precisely characterized operational envelope (grammar-complexity ceiling above, controlled-sharing efficiency below) achieves safe bidirectional processing only while Chain of Responsibility's receipt limitation is mitigated — the subsystem's backward routing channel (Composite parent references for request propagation) has no structural guarantee that requests reach a handler, meaning the envelope's lower bound (efficient infrastructure) is sound but its routing reliability is contingent.
Unguaranteed receipt potentially undermines the recursive subsystem's backward routing within its operational envelope
Depends on (SL): recursive-subsystem-validated-and-governed, recursive-infrastructure-memory-governed-by-controlled-sharing