Sigilith Harmonica Test — Domain-Agnostic Structural Analysis

I designed the Harmonica Test to evaluate whether Sigilith could generalise beyond symbolic and computational systems. A 10-hole diatonic harmonica was encoded purely as operational states and transitions, without using pitch, acoustics, musical theory or physical measurements. Sigilith then identified structural roles, constraints, drift chains and distinct operating regimes from transition topology alone. The experiment demonstrates how the same structural-analysis methodology can be applied across fundamentally different domains.