Structural Gravitational Waves v2.0 — Structural Gravity Precision Framework: Unified Precision Tests of Gravity Across Events, Catalogs, and Messengers

This release presents Structural Gravitational Waves (SGW) v2.0, the first unified framework of the SGW series. It integrates the four methodological development lines established across v1.0–v1.9—event-level precision, multi-messenger integration, catalog-scale global inference, and precision ringdown spectroscopy—into a single Structural Gravity Precision Framework. The framework introduces a unified architecture centered on a nine-block global parameter state vector and a hierarchical global likelihood, enabling coherent inference across individual events, multi-messenger observations, and large gravitational-wave catalogs. It further presents an end-to-end precision inference pipeline, catalog-scale precision spectroscopy, multi-band multi-messenger integration, next-generation detector-network architecture, precision cosmology connections, unified no-hair tests, a comprehensive validation battery (U1–U10), a discovery decision framework, systematics control, an illustrative discovery scenario, scientific reach forecasts, and an open-science and reproducibility framework. This Zenodo release contains: Full manuscript (42 pages) 16 publication-quality figures Companion demonstration script (sgw_v20_demo.py) README documentation All numerical values, validation scores, forecasts, and illustrative examples are provided solely to demonstrate the framework architecture and intended methodology. They are not observational results from LIGO–Virgo–KAGRA or future detector facilities.