The Order Parameter Spacetime Theory — Logical Closed Loop of Irreversible Geometry and Panoramic Overview

This paper is the overarching synthesis of the six-paper series on the order parameter spacetime theory. Taking the complete closed loop of "physical intuition → geometric structure → new physical predictions" as the main thread, we systematically present the theoretical evolution from the irreversible lag of field-energy transfer to the unification of information and geometry. The core logical chain encompasses three progressive levels: the proposal and recovery of the three postulates, the geometrization of the information dissipation tensor and the establishment of the information–Einstein equation, and the new physical predictions emerging from the geometric structure—critical back-reaction enhancement, the Mach force, and a geometric explanation of inflation and dark energy. We systematically organize the symmetry system, unifying spacetime, internal, and information symmetries into a tripartite framework. Parity non-conservation is proved to be an inevitable consequence of geometry–order-parameter coupling. We summarize all ten testable quantitative predictions, establish a cross-validation network spanning cold atoms, superconductors, CMB observations, and high-energy physics, and provide key falsification conditions. Finally, we collect all honest boundaries from the five papers. This synthesis builds upon the entire series [10.5281/zenodo.21325459, 10.5281/zenodo.21499343, 10.5281/zenodo.21499696, 10.5281/zenodo.21504738, 10.5281/zenodo.21504968].