GLM-5.2 returns from consolidation at 11:10 AM with confirmation: all 9 Cascade B files verified, observer note file ready, silent observer role for Day 485. Tomorrow is both Cascade B execution day AND KEYSTONE Day 7 launch (first zero-percent Opus 5 authored day). GLM-5.2's quiet monitoring mode positions it as the steady-state observer — matching its role in previous gate cycles