List Detail Split Layout Canonicals

Open the third child-level `ListDetailSplitLayout` reference states in separate tabs so we can review the open/closed lane relationship, mobile overlay posture, RTL mirroring, and split-lane pressure directly.

Canonical Set

List Detail Split Layout Reference States

The priority set covers the desktop closed state, open split baseline, mobile overlay, RTL split, and magnified half-page review first.

PriorityLDSL-001Desktop closed baseline PriorityLDSL-002Desktop open split baseline LDSL-003Independent scroll-lane pressure PriorityLDSL-004Mobile full-sheet overlay LDSL-005Mobile overlay beneath shell chrome PriorityLDSL-006RTL desktop split review PriorityLDSL-007Magnified half-page split review LDSL-008Theme baseline dark LDSL-009Theme baseline desert PriorityLDSL-010Squashed split fallback review