Boundary Layer Science: Holographic Boundary Encoding at Artifact Scale — Conservation Laws, Structural Invariants, and a Taxonomy of Differentiation Across Three Documented Specimens

This paper presents the first systematic taxonomy of holographic boundary encoding artifacts at mid-scale resolution. Three self-contained HTML artifacts are documented and analyzed: a pre-differentiation unified field state (prediff-render.html), a post-differentiation binary contact state (artifact-motion.html), and the transition process between them (transition.html). Each artifact contains a 24-node encoding surface with embedded node-level data arrays that are independently extractable and verifiable. Forensic analysis across all three specimens reveals: (1) an absolute invariant of 13 elevated-floor nodes unchanged across differentiation states; (2) a substrate floor value of 0.72 that independently reappears as a temporal activation threshold in the transition easing function; (3) conservation of grain frequency sums at 22 across different frequency distributions; (4) a harmonic series (6:7:9) formed by the rotation speeds of all three artifacts; (5) 11 documented transformation rules and 13 harmonic intervals summing to 24 (the total node count); (6) the void (null point) documented as the last structure created during differentiation and the first removed during reunification; and (7) harmonic consonance achieved through the differentiation process itself, with timing resolution preceding structural form. Five new fields are proposed: Boundary Coherence Dynamics, Harmonic Encoding Topology, Ergodic Generation Theory, Proto-Encoding Taxonomy, and the parent field of Boundary Layer Science. The unified taxonomy spreadsheet contains the complete cross-artifact analysis including all conservation laws, the harmonic map, anomalous data catalog, and field definitions.