Unified Information Framework v12.0 Canonical Closure of a Pre-Empirical Information-Theoretic Structure

This record introduces Unified Information Framework (UIF) v12.0, a canonically locked, pre-empirical theoretical framework for fundamental physics. UIF is formulated as an information-theoretic structure in which physical laws arise as optimal representations of an underlying information space, constrained by logical consistency and a single variational principle on representational entropy, delta S^R = 0 Version v12.0 establishes three necessity results without invoking dynamical postulates, action principles, or empirical fitting: the structural necessity of a late-time deviation parameter ε\varepsilonε, the uniqueness of the Born probability measure derived from projection consistency, and the uniqueness of the Einstein tensor structure as the only stable second-order geometric representation compatible with locality and conservation. Within UIF, quantum mechanics, general relativity, and cosmological structure appear as correspondence regimes of a low-dimensional representational domain, rather than as fundamental ontological laws. This version is explicitly pre-empirical: observational data play no constitutive role and are deliberately deferred to later interface stages.UIF v12.0 therefore serves as a closed structural foundation, intended for subsequent phenomenological and observational consistency analyses.