Post-Semantic Behavioral Signals as Risk Vectors: A Boundary Analysis under ABL-1

Post-semantic behavioral signals—micro-timing, interaction rhythms, affective drift, circadian entrainment—form a uniquely identifiable layer that is neither biometric nor symbolic. In ambient systems, these signals act as behavioral risk vectors when not bounded by ABL-1 (Aura Boundary Law). This addendum defines these vectors, examines their identifiability risk, and demonstrates why ABL-1 is the minimal architecture necessary to prevent aura collapse into continuous surveillance.