The Universal Stability Criterion (USG) project establishes a domain‑agnostic protocol that anticipates collapse in symbolic complex systems by detecting structural deviation before failure. Instead of relying on semantic correctness, USG extracts spectral invariants from n‑gram transition matrices and subjects them to controlled perturbations, producing a composite Stability Index that signals phase transitions toward rigidity or entropy collapse. This architecture is revolutionary because it shifts safety from reactive correction to proactive detection, offering a new safeguard for high‑stakes domains such as artificial intelligence outputs, legal frameworks, financial transaction sequences, and genomic data. The project is led by independent researcher Mohamed Samir Abd Elrahman Selim in Cairo, Egypt, and has advanced from theoretical formulation to preliminary computational demonstrations showing reliable early detection across text, code, and biological sequences. These results are archived and openly accessible in the permanent record [https://doi.org/10.5281/zenodo.18883274], with author identity verified via [https://orcid.org/0009-0001-2930-3609] and a growing citation record on [https://scholar.google.com/citations?user=IrKSLv0AAAAJ].