Strip store/orders.ts to a thin local cache with setOrders and
updateOrder only. Remove all client-side state transition logic,
actor validation, chat sync, notification generation, and wallet
integration — these are now handled by the backend API.
Fix components/order-actions.tsx and stores that depended on
the removed order store methods (markDisputed, autoTimeout*).
Remove lib/config/demo-timers.ts and all usages across stores
and pages. Order timeout scheduling, dispute auto-progression,
and hardcoded countdown displays are removed — timeouts are
now handled server-side by the backend.
zetaloop