fix: address PR review feedback for auto-update

- Register manual check listeners before checkForUpdates() to avoid race
- Strip prerelease/build metadata in version comparison
- Add res.setEncoding("utf8") for GitHub API response
- Stream file hashing in CI script instead of reading into memory
- Add directory existence checks in fix-latest-yml.mjs
- Define UpdateStatus type locally in preload to avoid tsconfig scope issues
- Show error dialog for manual check failures (parse/network errors)

.github/workflows/electron-release.yml

@@ -105,9 +105,14 @@ jobs:
           wait-for-completion: true
           output-artifact-directory: release-signed
 
-      - name: Upload signed artifacts to release
+      - name: Fix latest.yml with signed exe hashes
+        run: node scripts/fix-latest-yml.mjs
+
+      - name: Upload signed artifacts and update metadata to release
         uses: softprops/action-gh-release@v2
         with:
-          files: release-signed/*.exe
+          files: |
+            release-signed/*.exe
+            release/latest*.yml
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -31,7 +31,7 @@ https://github.com/user-attachments/assets/9d60a3e8-4a1c-4b5e-acbb-26af2d3eabd1
   - [Table of Contents](#table-of-contents)
   - [Examples](#examples)
   - [Features](#features)
-  - [MCP Server](#mcp-server)
+  - [MCP Server (Preview)](#mcp-server-preview)
     - [Claude Code CLI](#claude-code-cli)
   - [Getting Started](#getting-started)
     - [Try it Online](#try-it-online)
@@ -99,7 +99,9 @@ Here are some example prompts and their generated diagrams:
 -   **Cloud Architecture Diagram Support**: Specialized support for generating cloud architecture diagrams (AWS, GCP, Azure)
 -   **Animated Connectors**: Create dynamic and animated connectors between diagram elements for better visualization
 
-## MCP Server
+## MCP Server (Preview)
+
+> **Preview Feature**: This feature is experimental and may not be stable.
 
 Use Next AI Draw.io with AI agents like Claude Desktop, Cursor, and VS Code via MCP (Model Context Protocol).
 

components/chat-example-panel.tsx

@@ -141,6 +141,9 @@ export default function ExamplePanel({
                                     <span className="text-sm font-medium text-foreground group-hover:text-purple-500 transition-colors">
                                         {dict.examples.mcpServer}
                                     </span>
+                                    <span className="px-1.5 py-0.5 text-[10px] font-semibold bg-purple-500 text-white rounded">
+                                        {dict.examples.preview}
+                                    </span>
                                 </div>
                                 <p className="text-xs text-muted-foreground">
                                     {dict.examples.mcpDescription}

components/chat-panel.tsx

@@ -25,6 +25,7 @@ import Image from "@/components/image-with-basepath"
 import { ModelConfigDialog } from "@/components/model-config-dialog"
 import { SettingsDialog } from "@/components/settings-dialog"
 import { useDiagram } from "@/contexts/diagram-context"
+import { useAutoUpdate } from "@/hooks/use-auto-update"
 import { useDiagramToolHandlers } from "@/hooks/use-diagram-tool-handlers"
 import { useDictionary } from "@/hooks/use-dictionary"
 import { getSelectedAIConfig, useModelConfig } from "@/hooks/use-model-config"
@@ -1253,10 +1254,22 @@ export default function ChatPanel({
         sendChatMessage(newParts, savedXml, previousXml, sessionId)
     }
 
+    // Auto-update listener (must be before early return so it's always active)
+    useAutoUpdate()
+
     // Collapsed view (desktop only)
     if (!isVisible && !isMobile) {
         return (
             <div className="h-full flex flex-col items-center pt-4 bg-card border border-border/30 rounded-xl">
+                <Toaster
+                    position="bottom-left"
+                    richColors
+                    expand
+                    toastOptions={{
+                        style: { maxWidth: "480px" },
+                        duration: 2000,
+                    }}
+                />
                 <ButtonWithTooltip
                     tooltipContent={dict.nav.showPanel}
                     variant="ghost"

components/update-toast.tsx

@@ -0,0 +1,124 @@
+"use client"
+
+import type React from "react"
+
+interface UpdateToastAvailableProps {
+    variant: "download"
+    version: string
+    onDownload: () => void
+    onDismiss: () => void
+}
+
+interface UpdateToastManualProps {
+    variant: "manual"
+    version: string
+    url: string
+    onDismiss: () => void
+}
+
+interface UpdateToastDownloadingProps {
+    variant: "downloading"
+    percent: number
+    onDismiss: () => void
+}
+
+type UpdateToastProps =
+    | UpdateToastAvailableProps
+    | UpdateToastManualProps
+    | UpdateToastDownloadingProps
+
+export function UpdateToast(props: UpdateToastProps) {
+    const { variant, onDismiss } = props
+
+    const handleKeyDown = (e: React.KeyboardEvent) => {
+        if (e.key === "Escape") {
+            e.preventDefault()
+            onDismiss()
+        }
+    }
+
+    return (
+        <div
+            role="alert"
+            aria-live="polite"
+            tabIndex={0}
+            onKeyDown={handleKeyDown}
+            className="flex items-center gap-3 bg-card border border-border/50 px-4 py-3 rounded-xl shadow-sm"
+        >
+            <div className="flex items-center justify-center w-8 h-8 rounded-full bg-primary/10 flex-shrink-0">
+                <svg
+                    className="w-4 h-4 text-primary"
+                    viewBox="0 0 24 24"
+                    fill="none"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    aria-hidden="true"
+                >
+                    <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+                    <polyline points="7 10 12 15 17 10" />
+                    <line x1="12" y1="15" x2="12" y2="3" />
+                </svg>
+            </div>
+
+            <div className="flex-1 min-w-0">
+                {variant === "downloading" ? (
+                    <span className="text-sm text-foreground">
+                        Downloading update... {Math.round(props.percent)}%
+                    </span>
+                ) : (
+                    <span className="text-sm text-foreground">
+                        Version {props.version} is available
+                    </span>
+                )}
+            </div>
+
+            {variant === "download" && (
+                <button
+                    type="button"
+                    onClick={(e) => {
+                        e.stopPropagation()
+                        props.onDownload()
+                    }}
+                    className="text-xs font-medium px-3 py-1.5 rounded-lg bg-primary text-primary-foreground hover:bg-primary/90 transition-colors flex-shrink-0"
+                >
+                    Download
+                </button>
+            )}
+
+            {variant === "manual" && (
+                <button
+                    type="button"
+                    onClick={(e) => {
+                        e.stopPropagation()
+                        window.open(props.url, "_blank")
+                    }}
+                    className="text-xs font-medium px-3 py-1.5 rounded-lg bg-primary text-primary-foreground hover:bg-primary/90 transition-colors flex-shrink-0"
+                >
+                    Download
+                </button>
+            )}
+
+            <button
+                type="button"
+                onClick={onDismiss}
+                className="text-muted-foreground hover:text-foreground transition-colors flex-shrink-0"
+                aria-label="Dismiss"
+            >
+                <svg
+                    className="w-4 h-4"
+                    viewBox="0 0 20 20"
+                    fill="currentColor"
+                    aria-hidden="true"
+                >
+                    <path
+                        fillRule="evenodd"
+                        d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z"
+                        clipRule="evenodd"
+                    />
+                </svg>
+            </button>
+        </div>
+    )
+}

docs/cn/README_CN.md

@@ -30,7 +30,7 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
   - [目录](#目录)
   - [示例](#示例)
   - [功能特性](#功能特性)
-  - [MCP服务器](#mcp服务器)
+  - [MCP服务器（预览）](#mcp服务器预览)
     - [Claude Code CLI](#claude-code-cli)
   - [快速开始](#快速开始)
     - [在线试用](#在线试用)
@@ -98,7 +98,9 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
 -   **云架构图支持**：专门支持生成云架构图（AWS、GCP、Azure）
 -   **动画连接器**：在图表元素之间创建动态动画连接器，实现更好的可视化效果
 
-## MCP服务器
+## MCP服务器（预览）
+
+> **预览功能**：此功能为实验性功能，可能不稳定。
 
 通过MCP（模型上下文协议）在Claude Desktop、Cursor和VS Code等AI代理中使用Next AI Draw.io。
 

docs/ja/README_JA.md

@@ -28,7 +28,7 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
   - [目次](#目次)
   - [例](#例)
   - [機能](#機能)
-  - [MCPサーバー](#mcpサーバー)
+  - [MCPサーバー（プレビュー）](#mcpサーバープレビュー)
     - [Claude Code CLI](#claude-code-cli)
   - [はじめに](#はじめに)
     - [オンラインで試す](#オンラインで試す)
@@ -96,7 +96,9 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
 -   **クラウドアーキテクチャダイアグラムサポート**：クラウドアーキテクチャダイアグラムの生成を専門的にサポート（AWS、GCP、Azure）
 -   **アニメーションコネクタ**：より良い可視化のためにダイアグラム要素間に動的でアニメーション化されたコネクタを作成
 
-## MCPサーバー
+## MCPサーバー（プレビュー）
+
+> **プレビュー機能**：この機能は実験的であり、安定しない可能性があります。
 
 MCP（Model Context Protocol）を介して、Claude Desktop、Cursor、VS CodeなどのAIエージェントでNext AI Draw.ioを使用できます。
 

electron/electron.d.ts

@@ -2,6 +2,14 @@
  * Type declarations for Electron API exposed via preload script
  */
 
+/** Update status data sent from main process */
+type UpdateStatusData =
+    | { status: "available"; version: string }
+    | { status: "available-manual"; version: string; url: string }
+    | { status: "downloading"; percent: number }
+    | { status: "downloaded" }
+    | { status: "error"; message: string }
+
 /** Configuration preset interface */
 interface ConfigPreset {
     id: string
@@ -74,6 +82,12 @@ declare global {
             >
             /** Set user's preferred locale */
             setUserLocale: (locale: string) => Promise<SetUserLocaleResult>
+            /** Listen for update status events from main process */
+            onUpdateStatus: (
+                callback: (data: UpdateStatusData) => void,
+            ) => () => void
+            /** Start downloading the available update */
+            startDownload: () => Promise<void>
         }
 
         /** Settings window Electron API */

electron/main/app-menu.ts

@@ -6,6 +6,7 @@ import {
     type MenuItemConstructorOptions,
     shell,
 } from "electron"
+import { checkForUpdatesManual } from "./auto-updater"
 import {
     applyPresetToEnv,
     getAllPresets,
@@ -156,6 +157,11 @@ function getMenuTemplate(): MenuItemConstructorOptions[] {
     template.push({
         label: t.help,
         submenu: [
+            {
+                label: t.checkForUpdates,
+                click: () => checkForUpdatesManual(),
+            },
+            { type: "separator" },
             {
                 label: t.documentation,
                 click: async () => {

electron/main/auto-updater.ts

@@ -0,0 +1,282 @@
+import https from "node:https"
+import { app, dialog, ipcMain } from "electron"
+import electronUpdater from "electron-updater"
+import { getMainWindow } from "./window-manager"
+
+const { autoUpdater } = electronUpdater
+
+const CHECK_INTERVAL = 4 * 60 * 60 * 1000 // 4 hours
+const STARTUP_DELAY = 10_000 // 10 seconds
+const GITHUB_API_URL =
+    "https://api.github.com/repos/DayuanJiang/next-ai-draw-io/releases/latest"
+
+let isChecking = false
+let updateDownloaded = false
+
+/**
+ * Whether this platform supports electron-updater auto-update.
+ * macOS: disabled because builds are ad-hoc signed (no Apple Developer cert).
+ */
+function supportsAutoUpdate(): boolean {
+    if (process.platform === "darwin") return false
+    if (process.platform === "win32" && process.env.PORTABLE_EXECUTABLE_DIR)
+        return false
+    if (process.platform === "linux" && !process.env.APPIMAGE) return false
+    return true
+}
+
+/**
+ * Compare two semver-like version strings numerically.
+ * Returns true if remote > local.
+ * Strips prerelease/build metadata (e.g., "1.2.3-beta.1" → "1.2.3").
+ */
+function isNewerVersion(remote: string, local: string): boolean {
+    const strip = (v: string) => v.replace(/^v/, "").split("-")[0].split("+")[0]
+    const r = strip(remote).split(".").map(Number)
+    const l = strip(local).split(".").map(Number)
+    const len = Math.max(r.length, l.length)
+    for (let i = 0; i < len; i++) {
+        const rv = r[i] || 0
+        const lv = l[i] || 0
+        if (rv > lv) return true
+        if (rv < lv) return false
+    }
+    return false
+}
+
+/**
+ * Send update status to the renderer via IPC
+ */
+function sendStatus(data: Record<string, unknown>) {
+    const win = getMainWindow()
+    if (win && !win.isDestroyed()) {
+        win.webContents.send("update-status", data)
+    }
+}
+
+/**
+ * Check GitHub API for latest release (used on macOS and Linux DEB)
+ */
+function checkGitHubRelease(manual: boolean) {
+    const req = https.get(
+        GITHUB_API_URL,
+        {
+            headers: { "User-Agent": "next-ai-draw-io" },
+            timeout: 15000,
+        },
+        (res) => {
+            if (res.statusCode !== 200) {
+                console.error(`GitHub API returned status ${res.statusCode}`)
+                if (manual) {
+                    dialog.showMessageBox({
+                        type: "error",
+                        title: "Update Check Failed",
+                        message:
+                            "Could not check for updates. Please try again later.",
+                    })
+                }
+                isChecking = false
+                return
+            }
+
+            res.setEncoding("utf8")
+            let body = ""
+            res.on("data", (chunk: string) => {
+                body += chunk
+            })
+            res.on("end", () => {
+                try {
+                    const data = JSON.parse(body)
+                    const remoteVersion = data.tag_name || ""
+                    const localVersion = app.getVersion()
+
+                    if (isNewerVersion(remoteVersion, localVersion)) {
+                        sendStatus({
+                            status: "available-manual",
+                            version: remoteVersion.replace(/^v/, ""),
+                            url: data.html_url,
+                        })
+                    } else if (manual) {
+                        dialog.showMessageBox({
+                            type: "info",
+                            title: "No Updates",
+                            message: "You're up to date!",
+                            detail: `Version ${localVersion} is the latest version.`,
+                        })
+                    }
+                } catch (err) {
+                    console.error("Failed to parse GitHub release:", err)
+                    if (manual) {
+                        dialog.showMessageBox({
+                            type: "error",
+                            title: "Update Check Failed",
+                            message:
+                                "Could not check for updates. Please try again later.",
+                        })
+                    }
+                }
+                isChecking = false
+            })
+        },
+    )
+    req.on("timeout", () => {
+        req.destroy()
+        isChecking = false
+    })
+    req.on("error", (err) => {
+        console.error("GitHub API request failed:", err)
+        if (manual) {
+            dialog.showMessageBox({
+                type: "error",
+                title: "Update Check Failed",
+                message: "Could not check for updates. Please try again later.",
+            })
+        }
+        isChecking = false
+    })
+    req.end()
+}
+
+/**
+ * Set up electron-updater event handlers (Windows NSIS / Linux AppImage)
+ */
+function setupAutoUpdater() {
+    autoUpdater.autoDownload = false
+    autoUpdater.autoInstallOnAppQuit = true
+
+    autoUpdater.on("update-available", (info) => {
+        console.log("Update available:", info.version)
+        sendStatus({ status: "available", version: info.version })
+        isChecking = false
+    })
+
+    autoUpdater.on("update-not-available", () => {
+        console.log("No update available")
+        isChecking = false
+    })
+
+    autoUpdater.on("download-progress", (progress) => {
+        sendStatus({
+            status: "downloading",
+            percent: progress.percent,
+        })
+    })
+
+    autoUpdater.on("update-downloaded", () => {
+        updateDownloaded = true
+        console.log("Update downloaded")
+        sendStatus({ status: "downloaded" })
+        showRestartDialog()
+    })
+
+    autoUpdater.on("error", (err) => {
+        console.error("Auto-update error:", err)
+        sendStatus({ status: "error", message: String(err) })
+        isChecking = false
+    })
+
+    // IPC: renderer requests download
+    ipcMain.handle("updater:start-download", () => {
+        return autoUpdater.downloadUpdate()
+    })
+}
+
+/**
+ * Show restart dialog after update downloaded
+ */
+async function showRestartDialog() {
+    const result = await dialog.showMessageBox({
+        type: "info",
+        buttons: ["Restart Now", "Later"],
+        defaultId: 0,
+        cancelId: 1,
+        title: "Update Ready",
+        message: "A new version has been downloaded.",
+        detail: "Restart the app to install the update.",
+    })
+    if (result.response === 0) {
+        autoUpdater.quitAndInstall()
+    }
+}
+
+/**
+ * Run a single update check
+ */
+function doCheck(manual: boolean) {
+    if (isChecking) return
+    isChecking = true
+
+    // If update already downloaded, just re-show restart dialog
+    if (updateDownloaded && supportsAutoUpdate()) {
+        isChecking = false
+        showRestartDialog()
+        return
+    }
+
+    if (supportsAutoUpdate()) {
+        // For manual check, register listeners BEFORE triggering check
+        // to avoid race where event fires before listeners are attached
+        if (manual) {
+            const onNotAvailable = () => {
+                dialog.showMessageBox({
+                    type: "info",
+                    title: "No Updates",
+                    message: "You're up to date!",
+                    detail: `Version ${app.getVersion()} is the latest version.`,
+                })
+                cleanup()
+            }
+            const onAvailable = () => cleanup()
+            const onError = () => cleanup()
+            const cleanup = () => {
+                autoUpdater.off("update-not-available", onNotAvailable)
+                autoUpdater.off("update-available", onAvailable)
+                autoUpdater.off("error", onError)
+            }
+            autoUpdater.once("update-not-available", onNotAvailable)
+            autoUpdater.once("update-available", onAvailable)
+            autoUpdater.once("error", onError)
+        }
+        autoUpdater.checkForUpdates().catch((err) => {
+            console.error("checkForUpdates failed:", err)
+            isChecking = false
+        })
+    } else {
+        checkGitHubRelease(manual)
+    }
+}
+
+/**
+ * Initialize auto-updater. Call once after createWindow().
+ */
+export function initAutoUpdater() {
+    if (!app.isPackaged) return
+
+    if (supportsAutoUpdate()) {
+        setupAutoUpdater()
+    } else {
+        // Register no-op handler so renderer doesn't get an unhandled error
+        ipcMain.handle("updater:start-download", () => {})
+    }
+
+    // First check after startup delay
+    setTimeout(() => doCheck(false), STARTUP_DELAY)
+
+    // Periodic checks
+    setInterval(() => doCheck(false), CHECK_INTERVAL)
+}
+
+/**
+ * Manual update check from menu item
+ */
+export function checkForUpdatesManual() {
+    if (!app.isPackaged) {
+        dialog.showMessageBox({
+            type: "info",
+            title: "Development Mode",
+            message: "Auto-update is not available in development mode.",
+        })
+        return
+    }
+    doCheck(true)
+}

electron/main/index.ts

@@ -1,5 +1,6 @@
 import { app, BrowserWindow, dialog, shell } from "electron"
 import { buildAppMenu } from "./app-menu"
+import { initAutoUpdater } from "./auto-updater"
 import { getCurrentPresetEnv } from "./config-manager"
 import { loadEnvFile } from "./env-loader"
 import { registerIpcHandlers } from "./ipc-handlers"
@@ -58,6 +59,11 @@ if (!gotTheLock) {
 
             // Create main window
             createWindow(serverUrl)
+
+            // Initialize auto-updater (production only)
+            if (!isDev) {
+                initAutoUpdater()
+            }
         } catch (error) {
             console.error("Failed to start application:", error)
             dialog.showErrorBox(

electron/main/menu-i18n.ts

@@ -33,6 +33,7 @@ export interface MenuTranslations {
     help: string
     documentation: string
     reportIssue: string
+    checkForUpdates: string
 }
 
 const translations: Record<MenuLocale, MenuTranslations> = {
@@ -62,6 +63,7 @@ const translations: Record<MenuLocale, MenuTranslations> = {
         help: "Help",
         documentation: "Documentation",
         reportIssue: "Report Issue",
+        checkForUpdates: "Check for Updates...",
     },
 
     zh: {
@@ -90,6 +92,7 @@ const translations: Record<MenuLocale, MenuTranslations> = {
         help: "帮助",
         documentation: "文档",
         reportIssue: "报告问题",
+        checkForUpdates: "检查更新...",
     },
 
     ja: {
@@ -118,6 +121,7 @@ const translations: Record<MenuLocale, MenuTranslations> = {
         help: "ヘルプ",
         documentation: "ドキュメント",
         reportIssue: "問題を報告",
+        checkForUpdates: "アップデートを確認...",
     },
 
     "zh-Hant": {
@@ -146,6 +150,7 @@ const translations: Record<MenuLocale, MenuTranslations> = {
         help: "說明",
         documentation: "文件",
         reportIssue: "回報問題",
+        checkForUpdates: "檢查更新...",
     },
 }
 

electron/preload/index.ts

@@ -1,4 +1,12 @@
-import { contextBridge, ipcRenderer } from "electron"
+import { contextBridge, type IpcRendererEvent, ipcRenderer } from "electron"
+
+// Locally defined to avoid dependency on electron.d.ts compilation scope
+type UpdateStatus =
+    | { status: "available"; version: string }
+    | { status: "available-manual"; version: string; url: string }
+    | { status: "downloading"; percent: number }
+    | { status: "downloaded" }
+    | { status: "error"; message: string }
 
 /**
  * Expose safe APIs to the renderer process
@@ -31,4 +39,13 @@ contextBridge.exposeInMainWorld("electronAPI", {
     getUserLocale: () => ipcRenderer.invoke("get-user-locale"),
     setUserLocale: (locale: string) =>
         ipcRenderer.invoke("set-user-locale", locale),
+
+    // Auto-update
+    onUpdateStatus: (callback: (data: UpdateStatus) => void) => {
+        const handler = (_event: IpcRendererEvent, data: UpdateStatus) =>
+            callback(data)
+        ipcRenderer.on("update-status", handler)
+        return () => ipcRenderer.removeListener("update-status", handler)
+    },
+    startDownload: () => ipcRenderer.invoke("updater:start-download"),
 })

hooks/use-auto-update.ts

@@ -0,0 +1,86 @@
+import { createElement, useEffect, useRef } from "react"
+import { toast } from "sonner"
+import { UpdateToast } from "@/components/update-toast"
+
+export function useAutoUpdate() {
+    const downloadToastId = useRef<string | number | null>(null)
+
+    useEffect(() => {
+        const api = (window as Window).electronAPI
+        if (!api?.onUpdateStatus) return
+
+        const cleanup = api.onUpdateStatus((data) => {
+            switch (data.status) {
+                case "available":
+                    toast.custom(
+                        (t) =>
+                            createElement(UpdateToast, {
+                                variant: "download",
+                                version: data.version,
+                                onDownload: () => {
+                                    toast.dismiss(t)
+                                    api.startDownload().catch(() => {
+                                        // Error will come through update-status channel
+                                    })
+                                },
+                                onDismiss: () => toast.dismiss(t),
+                            }),
+                        { duration: 15000 },
+                    )
+                    break
+
+                case "available-manual":
+                    toast.custom(
+                        (t) =>
+                            createElement(UpdateToast, {
+                                variant: "manual",
+                                version: data.version,
+                                url: data.url,
+                                onDismiss: () => toast.dismiss(t),
+                            }),
+                        { duration: Number.POSITIVE_INFINITY },
+                    )
+                    break
+
+                case "downloading": {
+                    const id =
+                        downloadToastId.current ??
+                        `download-progress-${Date.now()}`
+                    downloadToastId.current = id
+                    toast.custom(
+                        (t) =>
+                            createElement(UpdateToast, {
+                                variant: "downloading",
+                                percent: data.percent,
+                                onDismiss: () => toast.dismiss(t),
+                            }),
+                        { id, duration: Number.POSITIVE_INFINITY },
+                    )
+                    break
+                }
+
+                case "downloaded":
+                    // Dismiss progress toast — native restart dialog handles the rest
+                    if (downloadToastId.current) {
+                        toast.dismiss(downloadToastId.current)
+                        downloadToastId.current = null
+                    }
+                    break
+
+                case "error":
+                    if (downloadToastId.current) {
+                        // Error during active download — inform the user
+                        toast.dismiss(downloadToastId.current)
+                        downloadToastId.current = null
+                        toast.error(
+                            "Update download failed. Please try again later.",
+                        )
+                    }
+                    // Otherwise: silent — background check failure, logged in main process
+                    break
+            }
+        })
+
+        return cleanup
+    }, [])
+}

lib/i18n/dictionaries/en.json

@@ -76,7 +76,8 @@
         "creativeDescription": "Draw something fun and creative",
         "cachedNote": "Examples are cached for instant response",
         "mcpServer": "MCP Server",
-        "mcpDescription": "Use in Claude Desktop, VS Code & Cursor"
+        "mcpDescription": "Use in Claude Desktop, VS Code & Cursor",
+        "preview": "PREVIEW"
     },
     "settings": {
         "title": "Settings",

lib/i18n/dictionaries/ja.json

@@ -76,7 +76,8 @@
         "creativeDescription": "楽しくてクリエイティブなものを描く",
         "cachedNote": "例はキャッシュされ、即座に応答します",
         "mcpServer": "MCP サーバー",
-        "mcpDescription": "Claude Desktop、VS Code、Cursor で使用"
+        "mcpDescription": "Claude Desktop、VS Code、Cursor で使用",
+        "preview": "プレビュー"
     },
     "settings": {
         "title": "設定",

lib/i18n/dictionaries/zh-Hant.json

@@ -76,7 +76,8 @@
         "creativeDescription": "繪製有趣且富有創意的內容",
         "cachedNote": "範例已快取，可即時回應",
         "mcpServer": "MCP 伺服器",
-        "mcpDescription": "在 Claude Desktop、VS Code 和 Cursor 中使用"
+        "mcpDescription": "在 Claude Desktop、VS Code 和 Cursor 中使用",
+        "preview": "預覽"
     },
     "settings": {
         "title": "設定",

lib/i18n/dictionaries/zh.json

@@ -76,7 +76,8 @@
         "creativeDescription": "绘制有趣且富有创意的内容",
         "cachedNote": "示例已缓存，可即时响应",
         "mcpServer": "MCP 服务器",
-        "mcpDescription": "在 Claude Desktop、VS Code 和 Cursor 中使用"
+        "mcpDescription": "在 Claude Desktop、VS Code 和 Cursor 中使用",
+        "preview": "预览"
     },
     "settings": {
         "title": "设置",

package-lock.json

@@ -48,10 +48,9 @@
                 "class-variance-authority": "^0.7.1",
                 "clsx": "^2.1.1",
                 "cmdk": "^1.1.1",
+                "electron-updater": "^6.8.3",
                 "idb": "^8.0.3",
                 "jsonrepair": "^3.13.1",
-                "lightningcss": "^1.32.0",
-                "lightningcss-linux-x64-gnu": "^1.32.0",
                 "lucide-react": "^0.577.0",
                 "motion": "^12.23.25",
                 "nanoid": "^5.0.0",
@@ -2226,9 +2225,6 @@
                 "arm64"
             ],
             "dev": true,
-            "libc": [
-                "glibc"
-            ],
             "license": "MIT OR Apache-2.0",
             "optional": true,
             "os": [
@@ -2246,9 +2242,6 @@
                 "arm64"
             ],
             "dev": true,
-            "libc": [
-                "musl"
-            ],
             "license": "MIT OR Apache-2.0",
             "optional": true,
             "os": [
@@ -2266,9 +2259,6 @@
                 "x64"
             ],
             "dev": true,
-            "libc": [
-                "glibc"
-            ],
             "license": "MIT OR Apache-2.0",
             "optional": true,
             "os": [
@@ -2286,9 +2276,6 @@
                 "x64"
             ],
             "dev": true,
-            "libc": [
-                "musl"
-            ],
             "license": "MIT OR Apache-2.0",
             "optional": true,
             "os": [
@@ -8259,9 +8246,6 @@
                 "x64"
             ],
             "dev": true,
-            "libc": [
-                "glibc"
-            ],
             "license": "MPL-2.0",
             "optional": true,
             "os": [
@@ -10062,7 +10046,6 @@
             "version": "2.0.1",
             "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
             "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-            "dev": true,
             "license": "Python-2.0"
         },
         "node_modules/aria-hidden": {
@@ -10698,7 +10681,6 @@
             "version": "9.5.1",
             "resolved": "https://registry.npmjs.org/builder-util-runtime/-/builder-util-runtime-9.5.1.tgz",
             "integrity": "sha512-qt41tMfgHTllhResqM5DcnHyDIWNgzHvuY2jDcYP9iaGpkWxTUzV6GQjDeLnlR1/DtdlcsWQbA7sByMpmJFTLQ==",
-            "dev": true,
             "license": "MIT",
             "dependencies": {
                 "debug": "^4.3.4",
@@ -12797,6 +12779,69 @@
             "dev": true,
             "license": "ISC"
         },
+        "node_modules/electron-updater": {
+            "version": "6.8.3",
+            "resolved": "https://registry.npmjs.org/electron-updater/-/electron-updater-6.8.3.tgz",
+            "integrity": "sha512-Z6sgw3jgbikWKXei1ENdqFOxBP0WlXg3TtKfz0rgw2vIZFJUyI4pD7ZN7jrkm7EoMK+tcm/qTnPUdqfZukBlBQ==",
+            "license": "MIT",
+            "dependencies": {
+                "builder-util-runtime": "9.5.1",
+                "fs-extra": "^10.1.0",
+                "js-yaml": "^4.1.0",
+                "lazy-val": "^1.0.5",
+                "lodash.escaperegexp": "^4.1.2",
+                "lodash.isequal": "^4.5.0",
+                "semver": "~7.7.3",
+                "tiny-typed-emitter": "^2.1.0"
+            }
+        },
+        "node_modules/electron-updater/node_modules/fs-extra": {
+            "version": "10.1.0",
+            "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.1.0.tgz",
+            "integrity": "sha512-oRXApq54ETRj4eMiFzGnHWGy+zo5raudjuxN0b8H7s/RU2oW0Wvsx9O0ACRN/kRq9E8Vu/ReskGB5o3ji+FzHQ==",
+            "license": "MIT",
+            "dependencies": {
+                "graceful-fs": "^4.2.0",
+                "jsonfile": "^6.0.1",
+                "universalify": "^2.0.0"
+            },
+            "engines": {
+                "node": ">=12"
+            }
+        },
+        "node_modules/electron-updater/node_modules/jsonfile": {
+            "version": "6.2.0",
+            "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.2.0.tgz",
+            "integrity": "sha512-FGuPw30AdOIUTRMC2OMRtQV+jkVj2cfPqSeWXv1NEAJ1qZ5zb1X6z1mFhbfOB/iy3ssJCD+3KuZ8r8C3uVFlAg==",
+            "license": "MIT",
+            "dependencies": {
+                "universalify": "^2.0.0"
+            },
+            "optionalDependencies": {
+                "graceful-fs": "^4.1.6"
+            }
+        },
+        "node_modules/electron-updater/node_modules/semver": {
+            "version": "7.7.4",
+            "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
+            "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
+            "license": "ISC",
+            "bin": {
+                "semver": "bin/semver.js"
+            },
+            "engines": {
+                "node": ">=10"
+            }
+        },
+        "node_modules/electron-updater/node_modules/universalify": {
+            "version": "2.0.1",
+            "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.1.tgz",
+            "integrity": "sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==",
+            "license": "MIT",
+            "engines": {
+                "node": ">= 10.0.0"
+            }
+        },
         "node_modules/electron-winstaller": {
             "version": "5.4.0",
             "resolved": "https://registry.npmjs.org/electron-winstaller/-/electron-winstaller-5.4.0.tgz",
@@ -14915,7 +14960,6 @@
             "version": "4.2.11",
             "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.11.tgz",
             "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
-            "dev": true,
             "license": "ISC"
         },
         "node_modules/gzip-size": {
@@ -16148,7 +16192,6 @@
             "version": "4.1.1",
             "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
             "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
-            "dev": true,
             "license": "MIT",
             "dependencies": {
                 "argparse": "^2.0.1"
@@ -16366,7 +16409,6 @@
             "version": "1.0.5",
             "resolved": "https://registry.npmjs.org/lazy-val/-/lazy-val-1.0.5.tgz",
             "integrity": "sha512-0/BnGCCfyUMkBpeDgWihanIAF9JmZhHBgUhEqzvf+adhNGLoP6TaiI5oF8oyb3I45P+PcnrqihSf01M0l0G5+Q==",
-            "dev": true,
             "license": "MIT"
         },
         "node_modules/levn": {
@@ -16567,9 +16609,6 @@
             "cpu": [
                 "x64"
             ],
-            "libc": [
-                "glibc"
-            ],
             "license": "MPL-2.0",
             "optional": true,
             "os": [
@@ -16753,9 +16792,6 @@
             "cpu": [
                 "arm64"
             ],
-            "libc": [
-                "glibc"
-            ],
             "license": "MPL-2.0",
             "optional": true,
             "os": [
@@ -16776,9 +16812,6 @@
             "cpu": [
                 "arm64"
             ],
-            "libc": [
-                "musl"
-            ],
             "license": "MPL-2.0",
             "optional": true,
             "os": [
@@ -16799,9 +16832,6 @@
             "cpu": [
                 "x64"
             ],
-            "libc": [
-                "musl"
-            ],
             "license": "MPL-2.0",
             "optional": true,
             "os": [
@@ -17069,6 +17099,19 @@
             "dev": true,
             "license": "MIT"
         },
+        "node_modules/lodash.escaperegexp": {
+            "version": "4.1.2",
+            "resolved": "https://registry.npmjs.org/lodash.escaperegexp/-/lodash.escaperegexp-4.1.2.tgz",
+            "integrity": "sha512-TM9YBvyC84ZxE3rgfefxUWiQKLilstD6k7PTGt6wfbtXF8ixIJLOL3VYyV/z+ZiPLsVxAsKAFVwWlWeb2Y8Yyw==",
+            "license": "MIT"
+        },
+        "node_modules/lodash.isequal": {
+            "version": "4.5.0",
+            "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+            "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ==",
+            "deprecated": "This package is deprecated. Use require('node:util').isDeepStrictEqual instead.",
+            "license": "MIT"
+        },
         "node_modules/lodash.merge": {
             "version": "4.6.2",
             "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
@@ -21055,7 +21098,6 @@
             "version": "1.4.4",
             "resolved": "https://registry.npmjs.org/sax/-/sax-1.4.4.tgz",
             "integrity": "sha512-1n3r/tGXO6b6VXMdFT54SHzT9ytu9yr7TaELowdYpMqY/Ao7EnlQGmAQ1+RatX7Tkkdm6hONI2owqNx2aZj5Sw==",
-            "dev": true,
             "license": "BlueOak-1.0.0",
             "engines": {
                 "node": ">=11.0.0"
@@ -22475,6 +22517,12 @@
                 "semver": "bin/semver"
             }
         },
+        "node_modules/tiny-typed-emitter": {
+            "version": "2.1.0",
+            "resolved": "https://registry.npmjs.org/tiny-typed-emitter/-/tiny-typed-emitter-2.1.0.tgz",
+            "integrity": "sha512-qVtvMxeXbVej0cQWKqVSSAHmKZEHAvxdF8HEUBFWts8h+xEo5m/lEiPakuyZ3BnCBjOD8i24kzNOiOLLgsSxhA==",
+            "license": "MIT"
+        },
         "node_modules/tinybench": {
             "version": "2.9.0",
             "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",

package.json

@@ -70,6 +70,7 @@
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "cmdk": "^1.1.1",
+        "electron-updater": "^6.8.3",
         "idb": "^8.0.3",
         "jsonrepair": "^3.13.1",
         "lucide-react": "^0.577.0",

packages/mcp-server/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@next-ai-drawio/mcp-server",
-    "version": "0.1.18",
+    "version": "0.1.17",
     "description": "MCP server for Next AI Draw.io - AI-powered diagram generation with real-time browser preview",
     "type": "module",
     "main": "dist/index.js",

packages/mcp-server/src/http-server.ts

@@ -155,7 +155,7 @@ export function startHttpServer(port = 6002): Promise<number> {
             }
         })
 
-        server.listen(port, "127.0.0.1", () => {
+        server.listen(port, () => {
             serverPort = port
             log.info(`HTTP server running on http://localhost:${port}`)
             resolve(port)

scripts/fix-latest-yml.mjs

@@ -0,0 +1,134 @@
+/**
+ * Fix latest.yml metadata after Windows code signing.
+ *
+ * electron-builder generates latest.yml with hashes of unsigned executables.
+ * After SignPath signs them, the hashes change. This script reads each
+ * latest*.yml in release/, finds the matching signed exe in release-signed/,
+ * and rewrites the sha512 and size fields.
+ *
+ * Usage: node scripts/fix-latest-yml.mjs
+ */
+
+import { createHash } from "node:crypto"
+import {
+    createReadStream,
+    existsSync,
+    readdirSync,
+    readFileSync,
+    statSync,
+    writeFileSync,
+} from "node:fs"
+import { join } from "node:path"
+
+const RELEASE_DIR = "release"
+const SIGNED_DIR = "release-signed"
+
+// Verify directories exist
+if (!existsSync(RELEASE_DIR)) {
+    console.error(`Error: ${RELEASE_DIR}/ directory does not exist`)
+    process.exit(1)
+}
+if (!existsSync(SIGNED_DIR)) {
+    console.error(`Error: ${SIGNED_DIR}/ directory does not exist`)
+    process.exit(1)
+}
+
+// Find all latest*.yml files
+const ymlFiles = readdirSync(RELEASE_DIR).filter(
+    (f) => f.startsWith("latest") && f.endsWith(".yml"),
+)
+
+if (ymlFiles.length === 0) {
+    console.log("No latest*.yml files found in release/")
+    process.exit(0)
+}
+
+/**
+ * Compute SHA-512 hash of a file using streaming (avoids loading large exe into memory)
+ */
+function hashFile(filePath) {
+    return new Promise((resolve, reject) => {
+        const hash = createHash("sha512")
+        const stream = createReadStream(filePath)
+        stream.on("data", (chunk) => hash.update(chunk))
+        stream.on("end", () => resolve(hash.digest("base64")))
+        stream.on("error", reject)
+    })
+}
+
+// Build a map of signed exe filenames to their hash and size
+const signedFiles = new Map()
+for (const f of readdirSync(SIGNED_DIR)) {
+    if (!f.endsWith(".exe")) continue
+    const filePath = join(SIGNED_DIR, f)
+    const sha512 = await hashFile(filePath)
+    const size = statSync(filePath).size
+    signedFiles.set(f, { sha512, size })
+}
+
+if (signedFiles.size === 0) {
+    console.error("No signed .exe files found in release-signed/")
+    process.exit(1)
+}
+
+console.log(
+    `Found ${signedFiles.size} signed exe(s):`,
+    [...signedFiles.keys()].join(", "),
+)
+
+for (const ymlFile of ymlFiles) {
+    const ymlPath = join(RELEASE_DIR, ymlFile)
+    const content = readFileSync(ymlPath, "utf-8")
+    const lines = content.split("\n")
+    const outputLines = []
+
+    // Track the current file entry being processed (by url field)
+    let currentExeName = null
+
+    for (const line of lines) {
+        // Match "  url: SomeFile.exe" inside the files array
+        const urlMatch = line.match(/^\s+url:\s+(.+\.exe)\s*$/)
+        if (urlMatch) {
+            currentExeName = urlMatch[1]
+            outputLines.push(line)
+            continue
+        }
+
+        // Match top-level "path: SomeFile.exe"
+        const pathMatch = line.match(/^path:\s+(.+\.exe)\s*$/)
+        if (pathMatch) {
+            currentExeName = pathMatch[1]
+            outputLines.push(line)
+            continue
+        }
+
+        // Replace sha512 lines
+        const sha512Match = line.match(/^(\s*)sha512:\s+/)
+        if (sha512Match && currentExeName && signedFiles.has(currentExeName)) {
+            const indent = sha512Match[1]
+            outputLines.push(
+                `${indent}sha512: ${signedFiles.get(currentExeName).sha512}`,
+            )
+            continue
+        }
+
+        // Replace size lines
+        const sizeMatch = line.match(/^(\s*)size:\s+\d+/)
+        if (sizeMatch && currentExeName && signedFiles.has(currentExeName)) {
+            const indent = sizeMatch[1]
+            outputLines.push(
+                `${indent}size: ${signedFiles.get(currentExeName).size}`,
+            )
+            // Reset current exe after processing both sha512 and size
+            currentExeName = null
+            continue
+        }
+
+        outputLines.push(line)
+    }
+
+    writeFileSync(ymlPath, outputLines.join("\n"))
+    console.log(`Updated ${ymlFile}`)
+}
+
+console.log("Done!")

tsconfig.json

@@ -35,7 +35,6 @@
         "packages",
         "electron",
         "electron-standalone",
-        "dist-electron",
-        "release"
+        "dist-electron"
     ]
 }