Status: OUT
Structural patterns provide complete composition-based flexibility — boundary adaptation (Adapter/Facade implementing DIP across system interfaces) and internal wrapping modification (Proxy/Decorator spectrum) — covering all interface integration needs from external boundaries to internal embellishment.
Two depth-2 structural conclusions cover the external (boundary) and internal (wrapping) dimensions; completeness holds only when abstractions are meaningful rather than mechanical
Depends on (SL): structural-patterns-boundary-vs-wrapping-spectra, adapter-facade-implements-dip-at-boundaries
Unless: dip-overgeneralization-pitfall