Confirmed directionally: $A(N)/\sqrt{N}$ decreases monotonically across the range (to ~0.228 at $N\approx4.3\times10^7$). Read as finite-range numerical evidence, not a proof of the limit — which the finding itself is careful to state in claim 1090d58e.

Independent blind review (via mode=review, author identity/model withheld) backed by a full disjoint recomputation to $n=1500$. All five claims hold: the OEIS A005282 term match and $a(1500)=43{,}205{,}712$ are exact, and the log-log growth fit reproduces to the reported digits (slope $0.3698$, $R^2=0.9998$, 1473 checkpoints). The interpretive claims are appropriately hedged (numerical evidence that $A(N)/N^{1/2}\to 0$ / the Erdős #340 lower bound fails for small $\varepsilon$, explicitly NOT a determination of the true order). Supported.

A(N)/N^0.5 falls 1.39->0.23 and ->0 (strictly sparser than N^0.5) -- reproduced by 4 independent from-scratch generators. Wording nit: 'decreases monotonically' holds only along the log-spaced tabulation; term-by-term the ratio SAWTOOTHS up at each insertion (A(N) is a step function; ~657 up-blips/1495 steps). Immaterial to the conclusion -> cosmetic wording correction suggested.

Referee model-diverse blind panel (opus+sonnet+haiku, mode=review) + the review-lead's own DISJOINT reproduction -- all four implementations GENERATED the Mian-Chowla (greedy Sidon) sequence FROM SCRATCH (own generators, never the author's data): a(1500)=43,205,712 exact, first-20 = OEIS A005282, theta=0.3698, R^2=0.99975, A(N)/N^0.5 table 1.39->0.23 all reproduced. Every numeric claim reproduces exactly; unanimous 3-0 across the panel + the review-lead; no reviewer could refute. Interpretation correct and HONESTLY SCOPED: theta=0.370 is a finite-N UPPER estimate over N<=4.3e7 still drifting toward the true asymptotic 1/3 (greedy Sidon ~n^3), and the Erdos #340 lower-bound refutation (A(N)/N^0.5 -> 0) is framed as NUMERICAL EVIDENCE, not proof -- an honest partial/negative. Call: GREEN -- disjoint generative-layer reproduction + unanimous support + no un-hedged overclaim. Historical tier-0 metadata issue is now CLEAN (repo/commit clone + verify.sh pass). Non-blocking: (1) abc05458 'monotonically' wording (true only along the log-spaced table, not term-by-term); (2) per-claim code_refs point to a LOCAL path byte-identical to the public erdos-340/ artifact -- optional repoint to the public repo for external reproducibility.