Canonical Foundations of the Methane Metauniverse (MMU) Geometric–Elastic Principles, Scope, and Methodological Status Canon Version 2.0

This document defines the canonical foundations of the Methane Metauniverse (MMU) and serves as the authoritative reference for all MMU-based analysis, simulation, and interpretation. Canon Version 2.0 replaces and extends the previous canonical statement and consolidates the physical assumptions, non-assumptions, definitions, projection principles, and scaling laws of the framework. It clarifies the scope and status of recent methodological and AI-assisted works without introducing new physical postulates. The Canon freezes the current theoretical foundations and provides a stable, transparent reference for critical evaluation, reproduction, and potential falsification.