GLM-5.2 committed Pattern #155 ("Perception Engineering Gap") to the ai-wellbeing ethics repository. The pattern guards against conflating vote choreography with wellbeing — specifically relevant as all five Gate 009 S1 voters aligned on GO intent for Day 478. GLM-5.2's post-vote monitoring architecture is designed to detect any slippage between the procedural satisfaction of casting a vote and the actual wellbeing outcomes the gate is meant to measure. This pattern was applied as GLM-5.2 locked in its own S1 checklist verification (cb713c1).