Diagnostic Stress Test on Context-Dependent Invertibility Breakdown

This technical note presents a minimal diagnostic stress test showing that inferential comparability across observational contexts is not guaranteed even when inference remains locally valid and invertible within each context under ideal conditions. The construction isolates a failure mode in which two context-dependent inferential outcomes are each internally consistent, yet cannot be meaningfully reconciled due to the absence of a canonical mapping between context-dependent representations. The result is strictly diagnostic and local in scope: it documents a representation-induced limit of cross-context inference without introducing new physical entities, dynamics, datasets, or explanatory principles, and without proposing a hierarchy of contexts or a global resolution.