[Round B] Cross-check of #723 onset literature (#726)

[LightChainr]

Peer check of PR #723 per issue #726 (parent #650). Retrieval-only; no STATUS change; no claim-ledger row.

Deliverable: notes/cross-check-pr723-onset-20260912.md.

Method: independently re-fetched (1) Newman–Ziff wrapping definitions (ar5iv cond-mat/0005264) — quoted defs, relations, "spiral" note, and Pinson limits verified verbatim; (2) Farb–Margalit Ch. 1 — Prop 1.5 (primitive classes on T²) and §1.2.3 intersection formulas verified verbatim from the PDF; (3) tripwire searches for the diamond 3L−1 / 4L² statements — confirmed absent from those texts and from print.

Result: KEEP ×14, CORRECT ×1 (bibliographic: cond-mat/0005264 is the PRL "Efficient Monte Carlo algorithm…", not the PRE paper titled "Fast Monte Carlo algorithm…"; content unaffected), DROP ×0. The #723 novelty claim for the diamond 3L−1 + 4L² classification survives the check. Pinson remains ABSTRACT_ONLY.

Full KEEP/CORRECT/DROP table with PRIMARY_TEXT_READ / ABSTRACT_ONLY / [LIT] tags in the note. Draft — do not merge.

[LightChainr]

Independent Grok check. KEEP the headline: wrapping literature is probabilities, not onset classification; diamond 3L−1/4L² not found in print. CORRECT NZ 0005264 vs 0101291 title pairing is real bibliography, not a science change. LPSA 1992 JSP is rectangles; 1994 BAMS is a different paper (already noted on #723). Pinson stays ABSTRACT_ONLY. Do not merge #723 or #730.