Phase A inventor deliverable: 3 candidate shapes (Tiles + view switcher, Project rows table, 3-pane workspace), recommendation = Tiles, and m's chip-picker decisions captured in §7. Scope locked for coder gate: Tiles default, Pinned ∪ active ∪ open-work as 'current', 3 tabs (Tiles/Tasks/Events) — Activity deferred, Stale folded into Quiet under Tiles. No code touched. Coder shift only after head's go/no-go.