Four-Arena Joint Constraint Geometry, Common Survival Set, and Global Tribunal in the Finite-Capacity Latency–Erasure Theory

We construct the first unified four-arena confrontation framework of the finite-capacity latency–erasure theory by embedding its previously derived strong-field ringdown, primordial tensor/PTA, Hubble-sector, and black-hole imaging interfaces into a single common parameter geometry. Earlier stages of the FCLET program established the rotating shell benchmark and detector-facing ringdown corridor, the primordial tensor and relic-background sector, the first global-survival geometry linking strong-field and cosmological branches, the Hubble-interface background-and-transport closure, and the shadow-sector metric and null-geodesic derivation. What remained absent was the first common tribunal capable of deciding whether these observational arenas are supported by one and the same admissible FCLET branch or only by separate, mutually incompatible branches. The present article provides that tribunal. The paper proceeds in four stages. First, we define the master FCLET parameter vector together with the unified derived-observable map Second, we define the arena-specific viability sets and construct the common four-arena survival set Third, we introduce a unified joint constraint functional where the corridor penalty operator enforces compatibility with the benchmark structures already derived in Articles 83–91. Fourth, we define the global falsification ladder of the theory by distinguishing four-arena common survival, partial fracture, corridor-breaking pseudo-survival, and full global fracture. The result is not a new FCLET sector. It is something more decisive. It is the first common constitutional framework of the late program. The paper does not ask whether FCLET can separately produce ringdown, PTA, Hubble, and imaging effects. It asks whether the same theory branch survives all four arenas at once. This is the exact death-or-survival question of the mature FCLET program. In this sense, Article 92 is the first global tribunal paper of the four-arena FCLET architecture.