Typed Non-Identification for World Multiplicity and Loss: Operational Availability, Existence, and Null-Boundary Claims

Discussions of world plurality and apparent disappearance often move too quickly between distinct claims: that a target is operationally unavailable, that its configuration has ceased, that it no longer exists, that it has been created or annihilated, or that it has crossed into a more fundamental null sector. This paper develops a typed diagnostic framework for separating these claims. The framework uses distinct sorts for bodies, clusters, structured world-tokens, reference contexts, assessment states, and a null-boundary token. Operational availability is reference-relative and is explicitly distinguished from the accessibility relation of Kripke semantics. Within a fixed-domain semantics, changes in availability or configuration do not add or remove world-sort elements, so availability onset and loss cannot by themselves represent world creation or annihilation. For whole-world loss, an additional admissibility condition is required: the certifying reference context must remain live and must not be constituted solely by the target world. The central result is a Typed Non-Identification Theorem Schema: in the declared bridge-free model class, operational-availability loss, existence-status loss, configuration-status loss, and a claimed transition to the null-boundary sector are pairwise non-entailing unless explicit directed bridge axioms are supplied. The contribution is diagnostic and integrative rather than a new multiverse ontology, physical mechanism, or empirical detection proposal.