F4a called it "a bar at the top of the page", which the previous two commits made false above `lg` — the working agreement's two-column bullet and the PRD's desktop split both described a rail the bar was not in. "Above everything it affects" is the rule that survived the move; where that lands now depends on whether the layout has a rail. Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>