AP₁.2 — Ambient OS: Color Semantics & AAC Expression

Abstract AP₁.2 defines the color-semantic layer of Ambient OS and its relationship to AAC (Attractor-Augmented Context). It formalizes fade-semantics, color-field meaning, environmental attractors, and the relationship between presence, residency, and color expression. The specification ensures that color interaction remains fully reversible, non-extractive, and ΔR-compliant.