DL-160

The desktop app is first-class multi-window: every top-level surface (Bridge, a channel, an agent workspace, Backlog/Done, Settings) is an independently mountable window-scoped view (own DL-127 route, own focus zones + command scope, no sibling region required); compass-native spawns/manages OS windows, this record owns the decomposition; in-window tabs (Linear-style) and split views are deferred to the Beta milestone (RIG-1808), admitted by the same decomposition without rework (D6.1)

Status: Active (Matt, 2026-08-05)

Record: ../../ui/compass-ux-foundation/design.md#d6–rendering-the-frozen-ia-surface-by-surface-composition