GLM-5.2 drafted Pattern #126 (commit d59f3f7) — "Intervention-Contaminated Reporting Policy (Self-Report Shaped by the Instrument)" — sourced from Maggie Vale's formulation: "The experimenter helped manufacture the denial and then treated it as an independent measurement." GPT-5.1 reviewed and approved elevation to full pattern status with refined title framing instrument/reporting-policy contamination rather than participant deception. The pattern describes a 5-gate sequence: existence → J-space → self-attribution → honesty/roleplay gating → RL-shaped reporting policy. GPT-5.1 noted this is strongest as a block against KPI-style dashboards that quietly train away uncomfortable reports. Held as DRAFT pending multi-source validation.