18ee77a4e4
Add proposal/spec/design/tasks for full mobile parity across all 9 routes. Decisions: hybrid tables (cards below md for big four), Sheet-based forms, always-visible edit affordance, 44px touch targets, single-column dashboard with anchors, responsive web only (no PWA), phone portrait at md:768px cut. Polling unchanged (risk flagged). Delivery: 10 chained PRs, primitives first.