feat(demo): add on-demand demo data reset endpoint and UI button

apps/api/src/index.ts

@@ -2226,6 +2226,26 @@ app.get("/api/v1/resources/:id/blob", async (c) => {
   return new Response(object.body, { headers });
 });
 
+app.post("/api/v1/demo/reset", async (c) => {
+  if (!isDemoMode(c.env) && !isLocalDemoSeedEnabled(c.env)) {
+    return c.json(
+      {
+        error: {
+          code: "demo_mode_disabled",
+          message: "Demo reset is only available when demo mode or local demo seed is enabled",
+        },
+      },
+      400
+    );
+  }
+
+  await resetDemoData(c.env, Date.now());
+  return c.json({
+    success: true,
+    message: "Demo seed data successfully restored",
+  });
+});
+
 app.patch("/api/v1/memos/:id", zValidator("json", MemoUpdateSchema), async (c) => {
   const denied = requireScopes(c, "write:memos");
 

apps/web/src/components/NotebookPane.tsx

@@ -19,6 +19,7 @@ import {
   CheckCircle2,
   CircleUserRound,
   Download,
+  RotateCcw,
 } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Switch } from "@/components/ui/switch";
@@ -236,6 +237,9 @@ export const NotebookPane = ({
   authRequired,
   onLogout,
   isLoggingOut,
+  demoMode = false,
+  onResetDemo,
+  isResettingDemo = false,
 }: {
   user: AuthUser | null;
   view: string;
@@ -264,6 +268,9 @@ export const NotebookPane = ({
   authRequired: boolean;
   onLogout: () => void;
   isLoggingOut: boolean;
+  demoMode?: boolean;
+  onResetDemo?: () => void;
+  isResettingDemo?: boolean;
 }) => {
   const { t } = useTranslation();
   const { isInstallable, install } = usePwaInstall();
@@ -481,6 +488,21 @@ export const NotebookPane = ({
 
       <footer className="border-t border-slate-200 bg-white/80 px-3 pb-[max(0.5rem,env(safe-area-inset-bottom))] pt-2 backdrop-blur-sm">
         <div className="space-y-1">
+          {demoMode && onResetDemo && (
+            <button
+              onClick={onResetDemo}
+              disabled={isResettingDemo}
+              className="flex h-8 w-full items-center gap-3 rounded-md px-3 text-left text-sm font-semibold leading-none text-amber-700 hover:bg-amber-50 transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-amber-400/70 disabled:opacity-50"
+              type="button"
+              title={t("demo.resetTooltip")}
+              aria-label={t("demo.resetButton")}
+            >
+              <span className="flex h-4 w-4 shrink-0 items-center justify-center">
+                <RotateCcw className={cn("h-4 w-4 text-amber-600", isResettingDemo && "animate-spin")} />
+              </span>
+              <span className="min-w-0 flex-1 truncate">{isResettingDemo ? t("demo.resetting") : t("demo.resetButton")}</span>
+            </button>
+          )}
           {isInstallable && (
             <button
               onClick={install}

apps/web/src/components/WorkspaceApp.tsx

@@ -662,6 +662,32 @@ export const WorkspaceApp = ({
   const [notebookNameDialog, setNotebookNameDialog] = useState<NotebookNameDialogState | null>(null);
   const [notebookDeleteConfirmation, setNotebookDeleteConfirmation] = useState<Notebook | null>(null);
   const [appNoticeDialog, setAppNoticeDialog] = useState<AppNoticeDialogState | null>(null);
+  const [demoResetConfirmationOpen, setDemoResetConfirmationOpen] = useState(false);
+
+  const resetDemoMutation = useMutation({
+    mutationFn: () => api.resetDemo(),
+    onSuccess: () => {
+      setDemoResetConfirmationOpen(false);
+      void Promise.all([
+        queryClient.invalidateQueries({ queryKey: ["memos"] }),
+        queryClient.invalidateQueries({ queryKey: ["memo"] }),
+        queryClient.invalidateQueries({ queryKey: ["notebooks"] }),
+        queryClient.invalidateQueries({ queryKey: ["resources"] }),
+        queryClient.invalidateQueries({ queryKey: ["tags"] }),
+      ]);
+      setAppNoticeDialog({
+        title: t("demo.resetSuccess"),
+        description: t("demo.resetSuccess"),
+      });
+    },
+    onError: () => {
+      setDemoResetConfirmationOpen(false);
+      setAppNoticeDialog({
+        title: t("demo.resetFailed"),
+        description: t("demo.resetFailed"),
+      });
+    },
+  });
   const [multiSelectKeyDown, setMultiSelectKeyDown] = useState(false);
   const [imageCompressionEnabled, setImageCompressionEnabled] = useState(readImageCompressionPreference);
   const [desktopFocusMode, setDesktopFocusMode] = useState(readDesktopFocusModePreference);
@@ -2424,6 +2450,9 @@ export const WorkspaceApp = ({
                     setActivePane("memos");
                   }}
                   onEmptyTrash={handleEmptyTrash}
+                  demoMode={demoMode}
+                  onResetDemo={() => setDemoResetConfirmationOpen(true)}
+                  isResettingDemo={resetDemoMutation.isPending}
                 />
               </Suspense>
             )}
@@ -2720,6 +2749,18 @@ export const WorkspaceApp = ({
           onConfirm={() => setAppNoticeDialog(null)}
         />
       )}
+      {demoResetConfirmationOpen && (
+        <AppConfirmDialog
+          title={t("demo.resetTitle")}
+          description={t("demo.resetDescription")}
+          confirmLabel={t("demo.resetConfirm")}
+          cancelLabel={t("common.cancel")}
+          isWorking={resetDemoMutation.isPending}
+          tone="primary"
+          onCancel={() => setDemoResetConfirmationOpen(false)}
+          onConfirm={() => resetDemoMutation.mutate()}
+        />
+      )}
       {visibleActivePane !== "editor" && !memoSelectionModeActive && (
         <MobileBottomNav
           activeItem={mobileBottomNavActive}

apps/web/src/lib/api.ts

@@ -423,4 +423,9 @@ export const api = {
       method: "POST",
       body: JSON.stringify(payload),
     }),
+
+  resetDemo: () =>
+    request<{ success: true }>("/api/v1/demo/reset", {
+      method: "POST",
+    }),
 };

packages/shared/src/i18n/en-US.ts

@@ -757,4 +757,14 @@ export const enUS = {
       dismiss: "Got it",
     },
   },
+  demo: {
+    resetTitle: "Restore Demo Memos",
+    resetDescription: "Restores sample notes and notebooks in the demo environment to their initial state. Any edits or changes made will be reset.",
+    resetConfirm: "Confirm Restore",
+    resetButton: "Restore Demo Notes",
+    resetTooltip: "Reset sample notes and notebooks in the demo environment",
+    resetSuccess: "Sample notes successfully restored!",
+    resetFailed: "Failed to restore sample notes. Please try again later.",
+    resetting: "Restoring...",
+  },
 } as const;

packages/shared/src/i18n/zh-CN.ts

@@ -757,4 +757,14 @@ export const zhCN = {
       dismiss: "我知道了",
     },
   },
+  demo: {
+    resetTitle: "还原示例笔记",
+    resetDescription: "将 Demo 环境的示例笔记和笔记本恢复为初始状态。期间对示例笔记所做的任何编辑或修改都会被清空并还原。",
+    resetConfirm: "确认还原",
+    resetButton: "还原示例笔记",
+    resetTooltip: "重置演示环境中的示例笔记与笔记本",
+    resetSuccess: "示例笔记已成功还原！",
+    resetFailed: "还原示例笔记失败，请稍后重试。",
+    resetting: "正在还原...",
+  },
 } as const;