import { create } from 'zustand' interface Toast { id: number message: string type: 'success' | 'error' | 'warning' | 'info' } interface UIStore { toasts: Toast[] addToast: (message: string, type?: Toast['type']) => void removeToast: (id: number) => void } export const useUIStore = create((set) => ({ toasts: [], addToast: (message, type = 'success') => { const id = Date.now() set(state => ({ toasts: [...state.toasts, { id, message, type }] })) setTimeout( () => set(state => ({ toasts: state.toasts.filter(t => t.id !== id) })), 3500 ) }, removeToast: (id) => set(state => ({ toasts: state.toasts.filter(t => t.id !== id) })), }))