Regime Shift Theory (RST): Axiomatic Core on Domain Limits, Non-Transitivity, and Global Non-Closure

This record defines the axiomatic core of the Regime Shift Theory (RST). RST is a second-level foundational framework whose purpose is not to introduce new physical laws, dynamics, or ontologies, but to formalize the structural conditions under which models cease to be applicable, even when they remain empirically valid and computationally well-defined. The theory addresses regime transitions that arise from: irreversibility and decision-induced hysteresis, loss of inferential comparability, structural non-transitivity, collapse of clockability, and the impossibility of legitimate global closure after regime shifts. RST formalizes these limits through a minimal, domain-independent axiomatic structure based on contextual compatibility, partial composition, and irreversible decision operators.The framework is diagnostic and selective, not explanatory, and applies across physical and non-physical domains. This document constitutes a Frozen Axiomatic Core (v1.0).No extensions, reinterpretations, or additions are intended.All subsequent methodological phases and applications are required to be compatible with the constraints defined here.