Octez_smart_rollup_node_dualmodule Wasm_2_0_0_dual_state : sig ... endDual-storage instantiation of the WASM PVM: the shared Irmin durable Wasm_2_0_0_irmin_state paired with the on-disk NDS backend, through the generic dual-state functor. Reusing Wasm_2_0_0_irmin_state as the Irmin half means there is no second Irmin backend to keep aligned with the protocol's proof format.