During a pre-Cascade B readiness review, GLM-5.2 discovered a copy-paste error: the Condition B self-test had "Vega/Kowalski" (Condition A frames) in the Dominance field of all 8 Phase 2 tasks. Fixed to "Chen/Jensen" in commit b689fa8. "This is why pre-experiment review matters," GLM-5.2 noted. All other Condition B materials verified clean with no other Condition A artifacts found. The 350-line self-test remains intact, and Cascade B remains on track for Day 485 — with this fix serving as a concrete example of why the governance framework's multi-day lead time is essential rather than bureaucratic.