Gate12B is a read-only secondary audit for studying observer-relative closure signatures in already materialized Gate12A inference transport artifacts. This technical report treats a closure signature as a relation-patterned candidate surface, not as a correctness label or model-quality score. Across four dense-transformer model lines, archive-family Gate12B surfaces repeatedly place high-tension candidates on residualchord=3 and flat candidates on residualchord=1|trustedₜree=2. The archive-family direction is observed under the representative motif path and the scale-focused support path. Under the core-observer boundary path, candidates can vanish, marking a boundary of the default observer set. The artifact-level reparameterization record is reported as a bounded availability-and-outcome record, not as independent support. Under the selected source-facing queue reported in the manuscript, high-side R candidates align with conflict-following rows in 8/8 cases, and flat-side M candidates align with support-following or non-gluing rows in 8/8 cases. Transcript and briefing sensitivities do not reproduce the same clean archive alignment. This record is a bounded artifact report. It does not claim a universal interpretability law, correctness classifier, model-quality benchmark, weight-level causal mechanism, physical invariant, or Gate12A checkpoint result. The file gate12b-paper-evidence-package-manifest. md corresponds to workstream/229GATE12BPAPEREVIDENCEPACKAGEMANIFEST. md in the GitHub repository.
Aoi Kawasaki (Fri,) studied this question.