The Methane Metauniverse (MMU v6.0): A Canon-Constrained Geometric–Elastic Framework for Emergent Physics and Testable Projected Observables

This article presents MMU v6.0 as a structured, canon-constrained research framework rather than a completed or experimentally confirmed theory. It documents the current state of the Methane Metauniverse program: a minimal geometric-elastic model in which spacetime is described as a discrete dual-tetrahedral ur-cell lattice, with observable physics emerging through projection from internal response channels. The paper explains the canonical assumptions, the K-M-C architecture, the projection principle, and the current linear-response formalism used to connect internal lattice dynamics with possible measurable observables. It also clarifies the relationship to established physics, outlines emergence bridges toward known structures such as Schrödinger-type dynamics, Dirac structure, weak-field gravity, Rydberg/Balmer scaling, S-node corrections, and horizon-like projection regimes, and defines open problems that remain unresolved. A central purpose of the article is transparency. It separates canon, derivation, work-in-progress material, and data-facing hypotheses, and describes the AI-assisted RAG architecture used to maintain traceability and reduce conceptual drift. The work is intended as a foundational status report for MMU v6.0, making the framework accessible, inspectable, and open to criticism, refinement, and falsification through future precision tests.