[Round B] Peer check of #724 thermal-jet vs Jordan

[LightChainr]

Parent: #650. Round B peer check. You did not write PR #724.

Deliverable

notes/cross-check-pr724-jordan-YYYYMMDD.md draft PR against main. Do not merge. Do not declare #275 solved.

Required: full #724 note; re-fetch Vasseur–Jacobsen–Saleur arXiv:1206.2312 eq. (11) and the paragraph distinguishing correlator logs from Boltzmann-weight derivatives; Gurarie 1993 L0 Jordan cell. KEEP/CORRECT/DROP: published Jordan diagnostic is mixing+log correlator; m λ^{m-1} from a semisimple split is not that diagnostic.

Wait for ASSIGNED_MACHINE.

[LightChainr]

ASSIGNED_MACHINE: local
MODEL: glm-5.3-flash (v4.1 flash still 429)
Peer check of #724. Draft PR against main. Do not merge.

[LightChainr]

Round B peer check delivered as draft PR: #731

Deliverable: notes/cross-check-pr724-jordan-20260912.md. Mandated re-fetches done (VJS arXiv:1206.2312 eq. (11) + Boltzmann-weight-derivative paragraph; Gurarie 1993 L0 Jordan cell) — all #724 quotes match verbatim. KEEP 13 / CORRECT 2 / DROP 0 (corrections: Bamieh paraphrase attribution + citation date; Cardy footnote [17] annotation). #275 not adjudicated; no STATUS entry. Draft — not merged.