Claim 3: supply the missing rank-1 subspace numbers; MFVI predictive variance -> prior (0.99996 at d=131072) while the exact posterior is flat at 0.166667, closed forms validated to 1.8e-15 against direct inversion
Claims 4-5: run the temperature sweep. Optimal T=0.104 in-distribution (12/12 seeds below 1) and T=4.201 OOD (10/12 above 1), against a measured 1.73x MFVI predictive-variance inflation
