Second Technical Addendum — Boundary Geometry and Operational Consistency under CTMU Conditions (v43)

Post-Horizon Instrumental Lineage — 4 August 2026 This record forms part of the Post-Horizon Instrumental Lineage of the Architecture of Limitation research programme. The designation and conditions governing subsequent review are established in K1 Open Concordance Phase: A Structured Validation and Evidence-Alignment Programme for the Open Research Release of AoLOS, v1.0, 2 August 2026, doi:10.5281/zenodo.21758275. The record is retained unchanged as evidence of the conditions, tools, concepts, and architectural pressures through which the programme developed. Inclusion in this lineage does not imply retrospective K1 validation or completion of article-level concordance; any proposition-specific qualification, reanalysis, companion publication, or unresolved pressure will be recorded separately through the phase’s declared review process. -- This second addendum continues the stress-testing of the Architecture of Limitation (AoL) under CTMU conditions by introducing a geometric diagnostic layer. The purpose of this addendum is not metaphysical evaluation, theoretical extension, or model comparison. CTMU is treated strictly as a maximally scope-loaded input artifact, consistent with prior analyses.The contribution of this addendum is diagnostic clarification. Developments in the AoL operational framework now permit boundary behavior, collapse localization, and refusal dynamics—previously described narratively and symbolically—to be rendered geometrically. This increased visibility does not alter v43 behavior, introduce new constraints, or revise earlier conclusions.No new claims are made regarding CTMU. The geometric layer functions solely as instrumentation, making explicit where admissibility ends without transforming refusal into intervention. In doing so, this addendum completes a three-stage examination—narrative, symbolic, and geometric—of AoL behavior under maximal totality pressure. Version 2 corrects figure semantics in Appendix A without altering analysis or conclusions. This work belongs to the Architecture of Limitation research program.