Status: OUT
LSP's keystone role is relevant to the four-dimensional behavioral modification space: as the linchpin connecting SOLID's substitutability pipeline to its cohesion pair, LSP helps validate that wrapping depth (Proxy→Decorator→Strategy), decoupling topology (Command→Observer→Mediator→Chain), state capture (Command/Memento), and state-strategy duality preserve behavioral substitutability — making LSP a primary correctness constraint across the behavioral modification taxonomy.
depth-6 connection of LSP's structural keystone role to the specific four-dimensional taxonomy it must validate
Depends on (SL): lsp-keystone-across-all-dimensions, behavioral-four-dimensional-modification-space