Title: A Thermodynamic Framework for Societal Energy, Complexity, and Migration Description: This work presents a unified thermodynamic meta-theory of society, modeling human systems as non-equilibrium energy-processing structures. It integrates class-based energy consumption and production, infrastructure density, logistics throughput, complexity dynamics, entropy, and migration. The framework is grounded in physical principles, uses Unicode-formatted mathematical notation, and is designed for simulation and empirical calibration. It offers a scalable foundation for analyzing societal evolution, collapse, and transformation under energy constraints.