Hardware Validation Addendum: Z3 Sector Structure and Encrypted Cloning Bridge on IBM Heron r3

We report two independent hardware validation results on IBM Heron r3 quantum processors (ibmₚittsburgh, 156 qubits) that strengthen the connection between the binary icosahedral group 2I and quantum informationprotocols. First, a pinned-layout shadow tomography experiment confirms all five predictions of the Z₃ sectorinterpolation model: entropy trimodality (ΔS = +0. 197, bootstrap CI excludes zero), K₆ charge spectrum selectionrule (Q=2 = 0 across 163, 840 shots at four CPHASE phases), pairwise connected correlation separation (Rₑncspans three orders of magnitude across sectors), and restored conjugate symmetry (|ΔS| = 0. 029 < 0. 03). Second, retroactive analysis of pairwise connected correlations establishes the encryption ratio Rₑnc =|⟨YY⟩conn|/|⟨XX⟩conn| as a diagnostic bridging the Yamaguchi-Kempf encrypted cloning protocol PRL 136, 010801 (2026) to Z₃ sector structure. The TAO sector (θ = π/3) yields Rₑnc = 0. 755 (ideal: 0. 754, deviation0. 1%), while the CZ sector (θ = π) yields Rₑnc = 125. 2 (ideal: ∞), confirming opposite correlation structures. TheY-K scaling result at n=5 (Rₑnc = 39. 5) maps to the CZ-like sector, consistent with coset averaging over 2I: 2T =5 driving correlations toward maximal encryption.