The accepted CHECK000 architecture remains the merits boundary. AC008 encodes Initiative and Feature as the only new SID-bearing workscope tiers, Epic as mutable non-authoritative grouping, Story as removed, and Initiative-rooted Timeline UIDs as explicit workscope targets.
This redesign is re-presentation, not re-adjudication. It improves the HDO review surface after the pre-redesign package commit 48aeca2b. It changes neither CHECK001's ACCEPT WITH CONDITIONS merits nor the CHECK000 architecture.