Reality After the Mott Closure: Regime-Bounded Ontology Without Fundamental Conservation

This paper examines the ontological consequences of achieving a constraint-level closure of the Mott problem in quantum theory. The classical Mott problem concerns the tension between rotationally symmetric quantum preparations and the emergence of asymmetric, localized, track-like outcomes without appealing to observer dependence or treating wavefunction collapse as a primitive axiom. Recent developments show that such outcomes can arise as admissible, stable regimes once the relevant constraint architecture is made explicit, without committing to any particular constructive dynamics. Taking this closure as established, the present work addresses a strictly ontological question: what must physical reality be like if localisation, asymmetry, and track formation are real features of the world in the absence of primitive collapse? No new interpretation is proposed, and no hidden variables, microphysical mechanisms, or additional dynamical laws are introduced. The analysis indicates that physical reality is more accurately described as regime-bounded rather than globally constrained. Within sufficiently stabilized regimes, conservation principles operate as reliable accounting rules, but they should not be elevated to universal ontological commitments that must hold everywhere and always. Ordering is therefore not assumed to arise from time-translation symmetry, and global conservation is not presumed. Instead, what becomes physically real is determined by which configurations are admissible and stable under the constraint structure, rather than by presupposed global symmetry requirements. The scope of this paper is deliberately narrow. It develops only the minimal ontological consequences implied by the logical closure of the Mott problem, leaving constructive realizations, technical implementations, and proprietary dynamical structures to companion work.