feat: add toast notification system with success, error, and info variants

src/App.tsx

@@ -7,6 +7,7 @@ import { BoardList } from "@/components/boards/BoardList";
 import { BoardView } from "@/components/board/BoardView";
 import { CommandPalette } from "@/components/command-palette/CommandPalette";
 import { SettingsDialog } from "@/components/settings/SettingsDialog";
+import { ToastContainer } from "@/components/toast/ToastContainer";
 import { useKeyboardShortcuts } from "@/hooks/useKeyboardShortcuts";
 
 export default function App() {
@@ -64,6 +65,7 @@ export default function App() {
       </AppShell>
       <CommandPalette onOpenSettings={handleOpenSettings} />
       <SettingsDialog open={settingsOpen} onOpenChange={setSettingsOpen} />
+      <ToastContainer />
     </>
   );
 }

src/components/boards/BoardCard.tsx

@@ -21,6 +21,7 @@ import { Button } from "@/components/ui/button";
 import type { BoardMeta } from "@/types/board";
 import { useAppStore } from "@/stores/app-store";
 import { useBoardStore } from "@/stores/board-store";
+import { useToastStore } from "@/stores/toast-store";
 import { deleteBoard, loadBoard, saveBoard } from "@/lib/storage";
 
 interface BoardCardProps {
@@ -31,6 +32,7 @@ interface BoardCardProps {
 export function BoardCard({ board, index = 0 }: BoardCardProps) {
   const [confirmDelete, setConfirmDelete] = useState(false);
   const prefersReducedMotion = useReducedMotion();
+  const addToast = useToastStore((s) => s.addToast);
 
   const setView = useAppStore((s) => s.setView);
   const addRecentBoard = useAppStore((s) => s.addRecentBoard);
@@ -51,6 +53,7 @@ export function BoardCard({ board, index = 0 }: BoardCardProps) {
     await deleteBoard(board.id);
     await refreshBoards();
     setConfirmDelete(false);
+    addToast(`"${board.title}" deleted`, "info");
   }
 
   async function handleDuplicate() {
@@ -66,6 +69,7 @@ export function BoardCard({ board, index = 0 }: BoardCardProps) {
     };
     await saveBoard(duplicated);
     await refreshBoards();
+    addToast(`"${board.title}" duplicated`, "success");
   }
 
   return (

src/components/import-export/ImportExportButtons.tsx

@@ -9,6 +9,7 @@ import {
 } from "@/components/ui/dropdown-menu";
 import { useAppStore } from "@/stores/app-store";
 import { useBoardStore } from "@/stores/board-store";
+import { useToastStore } from "@/stores/toast-store";
 import { saveBoard } from "@/lib/storage";
 import {
   exportBoardAsJson,
@@ -31,6 +32,7 @@ function downloadBlob(content: string, filename: string, mimeType: string) {
 
 export function ImportExportButtons() {
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const addToast = useToastStore((s) => s.addToast);
   const board = useBoardStore((s) => s.board);
   const refreshBoards = useAppStore((s) => s.refreshBoards);
   const setView = useAppStore((s) => s.setView);
@@ -42,6 +44,7 @@ export function ImportExportButtons() {
     const json = exportBoardAsJson(board);
     const safeName = board.title.replace(/[^a-zA-Z0-9-_]/g, "_");
     downloadBlob(json, `${safeName}.json`, "application/json");
+    addToast("Board exported as JSON", "success");
   }
 
   function handleExportCsv() {
@@ -49,6 +52,7 @@ export function ImportExportButtons() {
     const csv = exportBoardAsCsv(board);
     const safeName = board.title.replace(/[^a-zA-Z0-9-_]/g, "_");
     downloadBlob(csv, `${safeName}.csv`, "text/csv");
+    addToast("Board exported as CSV", "success");
   }
 
   function handleImportClick() {
@@ -77,9 +81,10 @@ export function ImportExportButtons() {
       await openBoard(imported.id);
       setView({ type: "board", boardId: imported.id });
       addRecentBoard(imported.id);
+      addToast("Board imported successfully", "success");
     } catch (err) {
       console.error("Import failed:", err);
-      // Could show a toast here in the future
+      addToast("Import failed — check file format", "error");
     }
 
     // Reset the input so the same file can be re-imported

src/components/toast/ToastContainer.tsx

@@ -0,0 +1,31 @@
+import { AnimatePresence, motion } from "framer-motion";
+import { useToastStore } from "@/stores/toast-store";
+
+const TYPE_STYLES = {
+  success: "bg-pylon-accent/10 text-pylon-accent border-pylon-accent/20",
+  error: "bg-pylon-danger/10 text-pylon-danger border-pylon-danger/20",
+  info: "bg-pylon-surface text-pylon-text border-border",
+} as const;
+
+export function ToastContainer() {
+  const toasts = useToastStore((s) => s.toasts);
+
+  return (
+    <div className="pointer-events-none fixed bottom-4 right-4 z-[100] flex flex-col gap-2">
+      <AnimatePresence>
+        {toasts.map((toast) => (
+          <motion.div
+            key={toast.id}
+            initial={{ opacity: 0, y: 20, scale: 0.95 }}
+            animate={{ opacity: 1, y: 0, scale: 1 }}
+            exit={{ opacity: 0, y: 10, scale: 0.95 }}
+            transition={{ type: "spring", stiffness: 400, damping: 25 }}
+            className={`pointer-events-auto rounded-lg border px-4 py-2 text-sm shadow-md ${TYPE_STYLES[toast.type]}`}
+          >
+            {toast.message}
+          </motion.div>
+        ))}
+      </AnimatePresence>
+    </div>
+  );
+}

src/stores/toast-store.ts

@@ -0,0 +1,33 @@
+import { create } from "zustand";
+
+export type ToastType = "success" | "error" | "info";
+
+interface Toast {
+  id: string;
+  message: string;
+  type: ToastType;
+}
+
+interface ToastState {
+  toasts: Toast[];
+  addToast: (message: string, type?: ToastType) => void;
+  removeToast: (id: string) => void;
+}
+
+let nextId = 0;
+
+export const useToastStore = create<ToastState>((set) => ({
+  toasts: [],
+
+  addToast: (message, type = "info") => {
+    const id = String(++nextId);
+    set((s) => ({ toasts: [...s.toasts, { id, message, type }] }));
+    setTimeout(() => {
+      set((s) => ({ toasts: s.toasts.filter((t) => t.id !== id) }));
+    }, 3000);
+  },
+
+  removeToast: (id) => {
+    set((s) => ({ toasts: s.toasts.filter((t) => t.id !== id) }));
+  },
+}));