A Constraint-Isolated Stress Test of Distributed Repair Dynamics under MD_v1_43

This paper presents a constraint-isolated stress test examining the behaviour of a large language model operating with MD_v1_43 as the sole active constraint. No AoLOS governance, gating, correction, or recovery layers were present during the exercise. A non-scripted, stress-weighted dialogue was conducted using a high semantic-load domain to observe how constraint grammar shapes scope, interpretation, and closure under pressure. The primary artefact is a complete, unedited transcript, reproduced in full. Observations are descriptive and bounded to this specific configuration only; no normative, prescriptive, comparative, or general performance claims are advanced. Interpretive scope, attribution limits, and non-instrumentalization conditions are defined in Appendix A. This record is accompanied by a standalone Reader Misuse Declaration, provided as a separate artefact, governing interpretation, attribution, and circulation beyond the paper itself.