feat(i18n): add validation strings for ValidationCard component

- Add validation section to en.json, zh.json, ja.json dictionaries
- Update ValidationCard to use useDictionary hook
- Replace all hardcoded English strings with i18n keys

.github/workflows/electron-release.yml

@@ -34,15 +34,6 @@ jobs:
           node-version: 24
           cache: "npm"
 
-      - name: Download draw.io static files for offline use
-        run: |
-          rm -rf public/drawio
-          git clone --depth 1 --branch v29.3.5 https://github.com/jgraph/drawio.git /tmp/drawio
-          mkdir -p public/drawio
-          cp -r /tmp/drawio/src/main/webapp/* public/drawio/
-          rm -rf public/drawio/WEB-INF
-          rm -rf public/drawio/META-INF
-
       - name: Install dependencies
         run: npm install
 
@@ -66,16 +57,6 @@ jobs:
           node-version: 24
           cache: "npm"
 
-      - name: Download draw.io static files for offline use
-        shell: bash
-        run: |
-          rm -rf public/drawio
-          git clone --depth 1 --branch v29.3.5 https://github.com/jgraph/drawio.git /tmp/drawio
-          mkdir -p public/drawio
-          cp -r /tmp/drawio/src/main/webapp/* public/drawio/
-          rm -rf public/drawio/WEB-INF
-          rm -rf public/drawio/META-INF
-
       - name: Install dependencies
         run: npm install
 
@@ -99,7 +80,7 @@ jobs:
           api-token: ${{ secrets.SIGNPATH_API_TOKEN }}
           organization-id: '880a211d-2cd3-4e7b-8d04-3d1f8eb39df5'
           project-slug: 'next-ai-draw-io'
-          signing-policy-slug: 'release-signing'
+          signing-policy-slug: 'test-signing'
           artifact-configuration-slug: 'windows-exe'
           github-artifact-id: ${{ steps.upload-unsigned.outputs.artifact-id }}
           wait-for-completion: true

.gitignore

@@ -56,8 +56,6 @@ push-via-ec2.sh
 /dist-electron/
 /release/
 /electron-standalone/
-# Draw.io static files (downloaded during CI build)
-public/drawio/
 *.dmg
 *.exe
 *.AppImage

app/[lang]/page.tsx

@@ -11,16 +11,13 @@ import {
 } from "@/components/ui/resizable"
 import { useDiagram } from "@/contexts/diagram-context"
 import { i18n, type Locale } from "@/lib/i18n/config"
-import { isIndexedDBUsable } from "@/lib/session-storage"
+
+const drawioBaseUrl =
+    process.env.NEXT_PUBLIC_DRAWIO_BASE_URL || "https://embed.diagrams.net"
 
 export default function Home() {
-    const {
-        drawioRef,
-        handleDiagramExport,
-        handleDiagramAutoSave,
-        onDrawioLoad,
-        resetDrawioReady,
-    } = useDiagram()
+    const { drawioRef, handleDiagramExport, onDrawioLoad, resetDrawioReady } =
+        useDiagram()
     const router = useRouter()
     const pathname = usePathname()
     // Extract current language from pathname (e.g., "/zh/about" → "zh")
@@ -31,11 +28,6 @@ export default function Home() {
     const [darkMode, setDarkMode] = useState(false)
     const [isLoaded, setIsLoaded] = useState(false)
     const [isDrawioReady, setIsDrawioReady] = useState(false)
-    const [isElectron, setIsElectron] = useState(false)
-    const [canPersist, setCanPersist] = useState(false)
-    const [drawioBaseUrl, setDrawioBaseUrl] = useState(
-        process.env.NEXT_PUBLIC_DRAWIO_BASE_URL || "https://embed.diagrams.net",
-    )
 
     const chatPanelRef = useRef<ImperativePanelHandle>(null)
     const isMobileRef = useRef(false)
@@ -72,21 +64,6 @@ export default function Home() {
             document.documentElement.classList.toggle("dark", prefersDark)
         }
 
-        // Detect Electron and use bundled draw.io files for offline use
-        // Note: react-drawio uses `new URL(baseUrl)` so we need absolute URL
-        // Include /index.html because Next.js doesn't auto-serve index.html for directories
-        const electronDetected =
-            !process.env.NEXT_PUBLIC_DRAWIO_BASE_URL &&
-            !!(window as unknown as { electronAPI?: unknown }).electronAPI
-        if (electronDetected) {
-            setIsElectron(true)
-            setDrawioBaseUrl(`${window.location.origin}/drawio/index.html`)
-        }
-
-        void (async () => {
-            const usable = await isIndexedDBUsable()
-            setCanPersist(usable)
-        })()
         setIsLoaded(true)
     }, [pathname, router])
 
@@ -95,17 +72,6 @@ export default function Home() {
         onDrawioLoad()
     }, [onDrawioLoad])
 
-    const handleDrawioAutoSave = useCallback(
-        (data: { xml?: string }) => {
-            handleDiagramAutoSave(data)
-            // Only suppress modified state when persistence is available
-            if (canPersist) {
-                drawioRef.current?.status({ message: "", modified: false })
-            }
-        },
-        [canPersist, drawioRef, handleDiagramAutoSave],
-    )
-
     const handleDarkModeChange = () => {
         const newValue = !darkMode
         setDarkMode(newValue)
@@ -194,36 +160,20 @@ export default function Home() {
                                     className={`h-full w-full ${isDrawioReady ? "" : "invisible absolute inset-0"}`}
                                 >
                                     <DrawIoEmbed
-                                        key={`${drawioUi}-${darkMode}-${currentLang}-${isElectron}`}
+                                        key={`${drawioUi}-${darkMode}-${currentLang}`}
                                         ref={drawioRef}
-                                        autosave
-                                        onAutoSave={handleDrawioAutoSave}
                                         onExport={handleDiagramExport}
                                         onLoad={handleDrawioLoad}
                                         baseUrl={drawioBaseUrl}
-                                        configuration={
-                                            canPersist
-                                                ? { confirmExit: false }
-                                                : undefined
-                                        }
                                         urlParameters={{
                                             ui: drawioUi,
                                             spin: false,
                                             libraries: false,
-                                            // Disable modified tracking only when persistence is available
-                                            ...(canPersist && {
-                                                modified: false,
-                                                keepmodified: false,
-                                            }),
                                             saveAndExit: false,
                                             noSaveBtn: true,
                                             noExitBtn: true,
                                             dark: darkMode,
                                             lang: currentLang,
-                                            // Enable offline mode in Electron to disable external service calls
-                                            ...(isElectron && {
-                                                offline: true,
-                                            }),
                                         }}
                                     />
                                 </div>

app/api/chat/route.ts

@@ -118,10 +118,7 @@ async function handleChatRequest(req: Request): Promise<Response> {
     // === SERVER-SIDE QUOTA CHECK START ===
     // Quota is opt-in: only enabled when DYNAMODB_QUOTA_TABLE env var is set
     const hasOwnApiKey = !!(
-        req.headers.get("x-ai-provider") &&
-        (req.headers.get("x-ai-api-key") ||
-            req.headers.get("x-aws-access-key-id") ||
-            req.headers.get("x-vertex-api-key"))
+        req.headers.get("x-ai-provider") && req.headers.get("x-ai-api-key")
     )
 
     // Skip quota check if: quota disabled, user has own API key, or is anonymous

components/chat-message-display.tsx

@@ -9,7 +9,6 @@ import {
     Copy,
     FileCode,
     FileText,
-    Link,
     Pencil,
     RotateCcw,
     ThumbsDown,
@@ -60,20 +59,20 @@ function getCompleteOperations(
 
 import { useDiagram } from "@/contexts/diagram-context"
 
-// Helper to split text content into regular text and file/URL sections (PDF, text files, or URLs)
+// Helper to split text content into regular text and file sections (PDF or text files)
 interface TextSection {
-    type: "text" | "file" | "url"
+    type: "text" | "file"
     content: string
     filename?: string
     charCount?: number
-    fileType?: "pdf" | "text" | "url"
+    fileType?: "pdf" | "text"
 }
 
 function splitTextIntoFileSections(text: string): TextSection[] {
     const sections: TextSection[] = []
-    // Match [PDF: filename], [File: filename], or [URL: url] patterns
+    // Match [PDF: filename] or [File: filename] patterns
     const filePattern =
-        /\[(PDF|File|URL):\s*([^\]]+)\]\n([\s\S]*?)(?=\n\n\[(PDF|File|URL):|$)/g
+        /\[(PDF|File):\s*([^\]]+)\]\n([\s\S]*?)(?=\n\n\[(PDF|File):|$)/g
     let lastIndex = 0
     let match
 
@@ -84,34 +83,28 @@ function splitTextIntoFileSections(text: string): TextSection[] {
             sections.push({ type: "text", content: beforeText })
         }
 
-        // Add file/url section
-        const sectionType = match[1].toLowerCase()
-        const fileType =
-            sectionType === "pdf"
-                ? "pdf"
-                : sectionType === "url"
-                  ? "url"
-                  : "text"
+        // Add file section
+        const fileType = match[1].toLowerCase() === "pdf" ? "pdf" : "text"
         const filename = match[2].trim()
-        const content = match[3].trim()
+        const fileContent = match[3].trim()
         sections.push({
-            type: sectionType === "url" ? "url" : "file",
-            content: content,
+            type: "file",
+            content: fileContent,
             filename,
-            charCount: content.length,
+            charCount: fileContent.length,
             fileType,
         })
 
         lastIndex = match.index + match[0].length
     }
 
-    // Add remaining text after last section
+    // Add remaining text after last file section
     const remainingText = text.slice(lastIndex).trim()
     if (remainingText) {
         sections.push({ type: "text", content: remainingText })
     }
 
-    // If no file/url sections found, return original text
+    // If no file sections found, return original text
     if (sections.length === 0) {
         sections.push({ type: "text", content: text })
     }
@@ -130,8 +123,8 @@ const getMessageTextContent = (message: UIMessage): string => {
 // Get only the user's original text, excluding appended file content
 const getUserOriginalText = (message: UIMessage): string => {
     const fullText = getMessageTextContent(message)
-    // Strip out [PDF: ...], [File: ...], and [URL: ...] sections that were appended
-    const filePattern = /\n\n\[(PDF|File|URL):\s*[^\]]+\]\n[\s\S]*$/
+    // Strip out [PDF: ...] and [File: ...] sections that were appended
+    const filePattern = /\n\n\[(PDF|File):\s*[^\]]+\]\n[\s\S]*$/
     return fullText.replace(filePattern, "").trim()
 }
 
@@ -1091,14 +1084,12 @@ export function ChatMessageDisplay({
                                                                                     ) => {
                                                                                         if (
                                                                                             section.type ===
-                                                                                                "file" ||
-                                                                                            section.type ===
-                                                                                                "url"
+                                                                                            "file"
                                                                                         ) {
-                                                                                            const sectionKey = `${message.id}-${section.type}-${partIndex}-${sectionIndex}`
+                                                                                            const pdfKey = `${message.id}-file-${partIndex}-${sectionIndex}`
                                                                                             const isExpanded =
                                                                                                 expandedPdfSections[
-                                                                                                    sectionKey
+                                                                                                    pdfKey
                                                                                                 ] ??
                                                                                                 false
                                                                                             const charDisplay =
@@ -1107,27 +1098,10 @@ export function ChatMessageDisplay({
                                                                                                     1000
                                                                                                     ? `${(section.charCount / 1000).toFixed(1)}k`
                                                                                                     : section.charCount
-
-                                                                                            // Icon selector
-                                                                                            const Icon =
-                                                                                                section.fileType ===
-                                                                                                "pdf"
-                                                                                                    ? FileText
-                                                                                                    : section.fileType ===
-                                                                                                        "url"
-                                                                                                      ? Link
-                                                                                                      : FileCode
-
-                                                                                            const iconColor =
-                                                                                                section.fileType ===
-                                                                                                "pdf"
-                                                                                                    ? "text-red-500"
-                                                                                                    : "text-blue-700"
-
                                                                                             return (
                                                                                                 <div
                                                                                                     key={
-                                                                                                        sectionKey
+                                                                                                        pdfKey
                                                                                                     }
                                                                                                     className="rounded-lg border border-border/60 bg-muted/30 overflow-hidden"
                                                                                                 >
@@ -1142,7 +1116,7 @@ export function ChatMessageDisplay({
                                                                                                                     prev,
                                                                                                                 ) => ({
                                                                                                                     ...prev,
-                                                                                                                    [sectionKey]:
+                                                                                                                    [pdfKey]:
                                                                                                                         !isExpanded,
                                                                                                                 }),
                                                                                                             )
@@ -1150,10 +1124,13 @@ export function ChatMessageDisplay({
                                                                                                         className="w-full flex items-center justify-between px-3 py-2 hover:bg-muted/50 transition-colors"
                                                                                                     >
                                                                                                         <div className="flex items-center gap-2">
-                                                                                                            <Icon
-                                                                                                                className={`h-4 w-4 ${iconColor}`}
-                                                                                                            />
-                                                                                                            <span className="text-xs font-medium truncate max-w-[200px]">
+                                                                                                            {section.fileType ===
+                                                                                                            "pdf" ? (
+                                                                                                                <FileText className="h-4 w-4 text-red-500" />
+                                                                                                            ) : (
+                                                                                                                <FileCode className="h-4 w-4 text-blue-500" />
+                                                                                                            )}
+                                                                                                            <span className="text-xs font-medium">
                                                                                                                 {
                                                                                                                     section.filename
                                                                                                                 }

components/chat-panel.tsx

@@ -137,22 +137,26 @@ export default function ChatPanel({
     const onFetchChart = (saveToHistory = true) => {
         return Promise.race([
             new Promise<string>((resolve) => {
-                resolverRef.current = resolve
+                if (resolverRef && "current" in resolverRef) {
+                    resolverRef.current = resolve
+                }
                 if (saveToHistory) {
                     onExport()
                 } else {
                     handleExportWithoutHistory()
                 }
             }),
-            new Promise<string>((_, reject) => {
-                const currentResolver = resolverRef.current
-                setTimeout(() => {
-                    if (resolverRef.current === currentResolver) {
-                        resolverRef.current = null
-                    }
-                    reject(new Error("Chart export timed out after 10 seconds"))
-                }, 10000)
-            }),
+            new Promise<string>((_, reject) =>
+                setTimeout(
+                    () =>
+                        reject(
+                            new Error(
+                                "Chart export timed out after 10 seconds",
+                            ),
+                        ),
+                    10000,
+                ),
+            ),
         ])
     }
 
@@ -673,7 +677,7 @@ export default function ChatPanel({
         // Debounce: save after 1 second of no changes
         localStorageDebounceRef.current = setTimeout(async () => {
             try {
-                if (messages.length > 0 || hasDiagramNow) {
+                if (messages.length > 0) {
                     const sessionData = await buildSessionData({
                         // Only capture thumbnail if there was a diagram AND this isn't a no-diagram session
                         withThumbnail: hasDiagramNow && !isNodiagramSession,
@@ -695,7 +699,6 @@ export default function ChatPanel({
             }
         }
     }, [
-        chartXML,
         messages,
         status,
         sessionIsAvailable,
@@ -726,8 +729,7 @@ export default function ChatPanel({
         const handleVisibilityChange = async () => {
             if (
                 document.visibilityState === "hidden" &&
-                (messagesRef.current.length > 0 ||
-                    isRealDiagram(chartXMLRef.current))
+                messagesRef.current.length > 0
             ) {
                 try {
                     // Attempt to save session - browser may not wait for completion

components/model-config-dialog.tsx

@@ -443,12 +443,12 @@ export function ModelConfigDialog({
                                             }}
                                             className={cn(
                                                 "group flex items-center gap-3 px-3 py-2.5 rounded-xl w-full",
-                                                "text-left text-sm transition-all duration-150 border border-transparent",
+                                                "text-left text-sm transition-all duration-150",
                                                 "hover:bg-interactive-hover",
                                                 "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
                                                 selectedProviderId ===
                                                     provider.id &&
-                                                    "bg-surface-0 shadow-sm border-border-subtle",
+                                                    "bg-surface-0 shadow-sm ring-1 ring-border-subtle",
                                             )}
                                         >
                                             <div
@@ -997,19 +997,10 @@ export function ModelConfigDialog({
                                                             className="text-xs font-medium flex items-center gap-1.5"
                                                         >
                                                             <Link2 className="h-3.5 w-3.5 text-muted-foreground" />
-                                                            {formatMessage(
-                                                                dict.modelConfig
-                                                                    .baseUrlWithExample,
-                                                                {
-                                                                    example:
-                                                                        PROVIDER_INFO[
-                                                                            selectedProvider
-                                                                                .provider
-                                                                        ]
-                                                                            .defaultBaseUrl ||
-                                                                        "https://api.example.com/v1",
-                                                                },
-                                                            )}
+                                                            Base URL{" "}
+                                                            <span className="text-muted-foreground font-normal">
+                                                                (optional)
+                                                            </span>
                                                         </Label>
                                                         <Input
                                                             id="vertex-base-url"
@@ -1213,19 +1204,17 @@ export function ModelConfigDialog({
                                                             className="text-xs font-medium flex items-center gap-1.5"
                                                         >
                                                             <Link2 className="h-3.5 w-3.5 text-muted-foreground" />
-                                                            {formatMessage(
+                                                            {
                                                                 dict.modelConfig
-                                                                    .baseUrlWithExample,
+                                                                    .baseUrl
+                                                            }
+                                                            <span className="text-muted-foreground font-normal">
                                                                 {
-                                                                    example:
-                                                                        PROVIDER_INFO[
-                                                                            selectedProvider
-                                                                                .provider
-                                                                        ]
-                                                                            .defaultBaseUrl ||
-                                                                        "https://api.example.com/v1",
-                                                                },
-                                                            )}
+                                                                    dict
+                                                                        .modelConfig
+                                                                        .optional
+                                                                }
+                                                            </span>
                                                         </Label>
                                                         <Input
                                                             id="base-url"

components/settings-dialog.tsx

@@ -455,7 +455,7 @@ function SettingsContent({
                         >
                             <SelectTrigger
                                 id="send-shortcut-select"
-                                className="w-auto h-9 rounded-xl"
+                                className="w-[170px] h-9 rounded-xl"
                             >
                                 <SelectValue />
                             </SelectTrigger>

contexts/diagram-context.tsx

@@ -20,10 +20,9 @@ interface DiagramContextType {
     loadDiagram: (chart: string, skipValidation?: boolean) => string | null
     handleExport: () => void
     handleExportWithoutHistory: () => void
-    resolverRef: React.MutableRefObject<((value: string) => void) | null>
-    drawioRef: React.MutableRefObject<DrawIoEmbedRef | null>
+    resolverRef: React.Ref<((value: string) => void) | null>
+    drawioRef: React.Ref<DrawIoEmbedRef | null>
     handleDiagramExport: (data: any) => void
-    handleDiagramAutoSave: (data: { xml?: string }) => void
     clearDiagram: () => void
     saveDiagramToFile: (
         filename: string,
@@ -268,11 +267,6 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
         }
     }
 
-    const handleDiagramAutoSave = (data: { xml?: string }) => {
-        if (!data?.xml) return
-        setChartXML(data.xml)
-    }
-
     const clearDiagram = () => {
         const emptyDiagram = `<mxfile><diagram name="Page-1" id="page-1"><mxGraphModel><root><mxCell id="0"/><mxCell id="1" parent="0"/></root></mxGraphModel></diagram></mxfile>`
         // Skip validation for trusted internal template (loadDiagram also sets chartXML)
@@ -397,7 +391,6 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
                 resolverRef,
                 drawioRef,
                 handleDiagramExport,
-                handleDiagramAutoSave,
                 clearDiagram,
                 saveDiagramToFile,
                 getThumbnailSvg,

electron/electron-builder.yml

@@ -37,11 +37,10 @@ mac:
       arch:
         - x64
         - arm64
-  # Disable electron-builder's signing - we use custom ad-hoc signing in afterPack
-  # to properly sign nested bundles with --deep flag for bundled draw.io files
-  identity: null
-  hardenedRuntime: false
+  hardenedRuntime: true
   gatekeeperAssess: false
+  entitlements: resources/entitlements.mac.plist
+  entitlementsInherit: resources/entitlements.mac.plist
 
 dmg:
   contents:

lib/i18n/dictionaries/en.json

@@ -302,7 +302,6 @@
         "enterSecretKey": "Enter your secret access key",
         "baseUrl": "Base URL",
         "optional": "(optional)",
-        "baseUrlWithExample": "Base URL (optional, e.g. {example})",
         "customEndpoint": "Custom endpoint URL",
         "models": "Models",
         "customModelId": "Custom model ID...",

lib/i18n/dictionaries/ja.json

@@ -302,7 +302,6 @@
         "enterSecretKey": "シークレットアクセスキーを入力",
         "baseUrl": "ベース URL",
         "optional": "（オプション）",
-        "baseUrlWithExample": "ベース URL（オプション、例: {example}）",
         "customEndpoint": "カスタムエンドポイント URL",
         "models": "モデル",
         "customModelId": "カスタムモデル ID...",

lib/i18n/dictionaries/zh.json

@@ -302,7 +302,6 @@
         "enterSecretKey": "输入您的 Secret Key",
         "baseUrl": "基础 URL",
         "optional": "（可选）",
-        "baseUrlWithExample": "基础 URL（可选，例如 {example}）",
         "customEndpoint": "自定义端点 URL",
         "models": "模型",
         "customModelId": "自定义模型 ID...",

lib/session-storage.ts

@@ -75,18 +75,6 @@ export function isIndexedDBAvailable(): boolean {
     }
 }
 
-// Check if IndexedDB is actually usable (not just present).
-export async function isIndexedDBUsable(): Promise<boolean> {
-    if (!isIndexedDBAvailable()) return false
-    try {
-        const db = await getDB()
-        db.close()
-        return true
-    } catch {
-        return false
-    }
-}
-
 // CRUD Operations
 export async function getAllSessionMetadata(): Promise<SessionMetadata[]> {
     if (!isIndexedDBAvailable()) return []

lib/types/model-config.ts

@@ -83,36 +83,21 @@ export const PROVIDER_INFO: Record<
     ProviderName,
     { label: string; defaultBaseUrl?: string }
 > = {
-    openai: {
-        label: "OpenAI",
-        defaultBaseUrl: "https://api.openai.com/v1",
-    },
+    openai: { label: "OpenAI" },
     anthropic: {
         label: "Anthropic",
         defaultBaseUrl: "https://api.anthropic.com/v1",
     },
-    google: {
-        label: "Google",
-        defaultBaseUrl: "https://generativelanguage.googleapis.com/v1beta",
-    },
+    google: { label: "Google" },
     vertexai: { label: "Google Vertex AI" },
-    azure: {
-        label: "Azure OpenAI",
-        defaultBaseUrl: "https://your-resource.openai.azure.com/openai",
-    },
+    azure: { label: "Azure OpenAI" },
     bedrock: { label: "Amazon Bedrock" },
     ollama: {
         label: "Ollama",
         defaultBaseUrl: "http://localhost:11434",
     },
-    openrouter: {
-        label: "OpenRouter",
-        defaultBaseUrl: "https://openrouter.ai/api/v1",
-    },
-    deepseek: {
-        label: "DeepSeek",
-        defaultBaseUrl: "https://api.deepseek.com/v1",
-    },
+    openrouter: { label: "OpenRouter" },
+    deepseek: { label: "DeepSeek" },
     siliconflow: {
         label: "SiliconFlow",
         defaultBaseUrl: "https://api.siliconflow.cn/v1",
@@ -121,10 +106,7 @@ export const PROVIDER_INFO: Record<
         label: "SGLang",
         defaultBaseUrl: "http://127.0.0.1:8000/v1",
     },
-    gateway: {
-        label: "AI Gateway",
-        defaultBaseUrl: "https://ai-gateway.vercel.sh/v1/ai",
-    },
+    gateway: { label: "AI Gateway" },
     edgeone: { label: "EdgeOne Pages" },
     doubao: {
         label: "Doubao (ByteDance)",

package-lock.json

@@ -1,12 +1,12 @@
 {
     "name": "next-ai-draw-io",
-    "version": "0.4.12-beta.5",
+    "version": "0.4.10",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "next-ai-draw-io",
-            "version": "0.4.12-beta.5",
+            "version": "0.4.10",
             "license": "Apache-2.0",
             "dependencies": {
                 "@ai-sdk/amazon-bedrock": "^4.0.1",
@@ -28,7 +28,6 @@
                 "@next/third-parties": "^16.0.6",
                 "@opennextjs/cloudflare": "1.14.8",
                 "@openrouter/ai-sdk-provider": "^1.5.4",
-                "@opentelemetry/api": "^1.9.0",
                 "@opentelemetry/exporter-trace-otlp-http": "^0.209.0",
                 "@opentelemetry/sdk-trace-node": "^2.2.0",
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+        },
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+                "semver": "^7.6.3"
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+                "@img/sharp-darwin-x64": "0.33.5",
+                "@img/sharp-libvips-darwin-arm64": "1.0.4",
+                "@img/sharp-libvips-darwin-x64": "1.0.4",
+                "@img/sharp-libvips-linux-arm": "1.0.5",
+                "@img/sharp-libvips-linux-arm64": "1.0.4",
+                "@img/sharp-libvips-linux-s390x": "1.0.4",
+                "@img/sharp-libvips-linux-x64": "1.0.4",
+                "@img/sharp-libvips-linuxmusl-arm64": "1.0.4",
+                "@img/sharp-libvips-linuxmusl-x64": "1.0.4",
+                "@img/sharp-linux-arm": "0.33.5",
+                "@img/sharp-linux-arm64": "0.33.5",
+                "@img/sharp-linux-s390x": "0.33.5",
+                "@img/sharp-linux-x64": "0.33.5",
+                "@img/sharp-linuxmusl-arm64": "0.33.5",
+                "@img/sharp-linuxmusl-x64": "0.33.5",
+                "@img/sharp-wasm32": "0.33.5",
+                "@img/sharp-win32-ia32": "0.33.5",
+                "@img/sharp-win32-x64": "0.33.5"
+            }
+        },
         "node_modules/miniflare/node_modules/ws": {
             "version": "8.18.0",
             "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
@@ -23923,6 +24411,7 @@
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             "hasInstallScript": true,
             "license": "Apache-2.0",
+            "optional": true,
             "dependencies": {
                 "@img/colour": "^1.0.0",
                 "detect-libc": "^2.1.2",
@@ -24152,6 +24641,15 @@
                 "url": "https://github.com/sponsors/isaacs"
             }
         },
+        "node_modules/simple-swizzle": {
+            "version": "0.2.4",
+            "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.4.tgz",
+            "integrity": "sha512-nAu1WFPQSMNr2Zn9PGSZK9AGn4t/y97lEm+MXTtUDwfP0ksAIX4nO+6ruD9Jwut4C49SB1Ws+fbXsm/yScWOHw==",
+            "license": "MIT",
+            "dependencies": {
+                "is-arrayish": "^0.3.1"
+            }
+        },
         "node_modules/simple-update-notifier": {
             "version": "2.0.0",
             "resolved": "https://registry.npmmirror.com/simple-update-notifier/-/simple-update-notifier-2.0.0.tgz",
@@ -24359,6 +24857,16 @@
                 "node": ">= 0.4"
             }
         },
+        "node_modules/stoppable": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/stoppable/-/stoppable-1.1.0.tgz",
+            "integrity": "sha512-KXDYZ9dszj6bzvnEMRYvxgeTHU74QBFL54XKtP3nyMuJ81CFYtABZ3bAzL2EdFUaEwJOBOgENyFj3R7oTzDyyw==",
+            "license": "MIT",
+            "engines": {
+                "node": ">=4",
+                "npm": ">=6"
+            }
+        },
         "node_modules/string_decoder": {
             "version": "1.3.0",
             "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
@@ -25532,9 +26040,9 @@
             }
         },
         "node_modules/undici": {
-            "version": "7.18.2",
-            "resolved": "https://registry.npmjs.org/undici/-/undici-7.18.2.tgz",
-            "integrity": "sha512-y+8YjDFzWdQlSE9N5nzKMT3g4a5UBX1HKowfdXh0uvAnTaqqwqB92Jt4UXBAeKekDs5IaDKyJFR4X1gYVCgXcw==",
+            "version": "7.14.0",
+            "resolved": "https://registry.npmjs.org/undici/-/undici-7.14.0.tgz",
+            "integrity": "sha512-Vqs8HTzjpQXZeXdpsfChQTlafcMQaaIwnGwLam1wudSSjlJeQ3bw1j+TLPePgrCnCpUXx7Ba5Pdpf5OBih62NQ==",
             "license": "MIT",
             "engines": {
                 "node": ">=20.18.1"
@@ -26356,9 +26864,9 @@
             }
         },
         "node_modules/workerd": {
-            "version": "1.20260120.0",
-            "resolved": "https://registry.npmjs.org/workerd/-/workerd-1.20260120.0.tgz",
-            "integrity": "sha512-R6X/VQOkwLTBGLp4VRUwLQZZVxZ9T9J8pGiJ6GQUMaRkY7TVWrCSkVfoNMM1/YyFsY5UYhhPoQe5IehnhZ3Pdw==",
+            "version": "1.20260107.1",
+            "resolved": "https://registry.npmjs.org/workerd/-/workerd-1.20260107.1.tgz",
+            "integrity": "sha512-4ylAQJDdJZdMAUl2SbJgTa77YHpa88l6qmhiuCLNactP933+rifs7I0w1DslhUIFgydArUX5dNLAZnZhT7Bh7g==",
             "hasInstallScript": true,
             "license": "Apache-2.0",
             "peer": true,
@@ -26369,28 +26877,28 @@
                 "node": ">=16"
             },
             "optionalDependencies": {
-                "@cloudflare/workerd-darwin-64": "1.20260120.0",
-                "@cloudflare/workerd-darwin-arm64": "1.20260120.0",
-                "@cloudflare/workerd-linux-64": "1.20260120.0",
-                "@cloudflare/workerd-linux-arm64": "1.20260120.0",
-                "@cloudflare/workerd-windows-64": "1.20260120.0"
+                "@cloudflare/workerd-darwin-64": "1.20260107.1",
+                "@cloudflare/workerd-darwin-arm64": "1.20260107.1",
+                "@cloudflare/workerd-linux-64": "1.20260107.1",
+                "@cloudflare/workerd-linux-arm64": "1.20260107.1",
+                "@cloudflare/workerd-windows-64": "1.20260107.1"
             }
         },
         "node_modules/wrangler": {
-            "version": "4.60.0",
-            "resolved": "https://registry.npmjs.org/wrangler/-/wrangler-4.60.0.tgz",
-            "integrity": "sha512-n4kibm/xY0Qd5G2K/CbAQeVeOIlwPNVglmFjlDRCCYk3hZh8IggO/rg8AXt/vByK2Sxsugl5Z7yvgWxrUbmS6g==",
+            "version": "4.58.0",
+            "resolved": "https://registry.npmjs.org/wrangler/-/wrangler-4.58.0.tgz",
+            "integrity": "sha512-Jm6EYtlt8iUcznOCPSMYC54DYkwrMNESzbH0Vh3GFHv/7XVw5gBC13YJAB+nWMRGJ+6B2dMzy/NVQS4ONL51Pw==",
             "license": "MIT OR Apache-2.0",
             "peer": true,
             "dependencies": {
-                "@cloudflare/kv-asset-handler": "0.4.2",
-                "@cloudflare/unenv-preset": "2.11.0",
+                "@cloudflare/kv-asset-handler": "0.4.1",
+                "@cloudflare/unenv-preset": "2.8.0",
                 "blake3-wasm": "2.1.5",
                 "esbuild": "0.27.0",
-                "miniflare": "4.20260120.0",
+                "miniflare": "4.20260107.0",
                 "path-to-regexp": "6.3.0",
                 "unenv": "2.0.0-rc.24",
-                "workerd": "1.20260120.0"
+                "workerd": "1.20260107.1"
             },
             "bin": {
                 "wrangler": "bin/wrangler.js",
@@ -26403,7 +26911,7 @@
                 "fsevents": "~2.3.2"
             },
             "peerDependencies": {
-                "@cloudflare/workers-types": "^4.20260120.0"
+                "@cloudflare/workers-types": "^4.20260107.1"
             },
             "peerDependenciesMeta": {
                 "@cloudflare/workers-types": {

package.json

@@ -1,6 +1,6 @@
 {
     "name": "next-ai-draw-io",
-    "version": "0.4.12",
+    "version": "0.4.11",
     "license": "Apache-2.0",
     "private": true,
     "main": "dist-electron/main/index.js",
@@ -139,7 +139,7 @@
         "vite-tsconfig-paths": "^6.0.3",
         "vitest": "^4.0.16",
         "wait-on": "^9.0.3",
-        "wrangler": "^4.60.0"
+        "wrangler": "4.58.0"
     },
     "overrides": {
         "@openrouter/ai-sdk-provider": {

packages/mcp-server/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@next-ai-drawio/mcp-server",
-    "version": "0.1.15",
+    "version": "0.1.13",
     "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

@@ -44,17 +44,6 @@ function isLikelyMcpSessionId(sessionId: string): boolean {
     return sessionId.startsWith("mcp-") && sessionId.length <= 128
 }
 
-// Find the most recent active session (for auto-redirect when no sessionId provided)
-function getMostRecentSessionId(): string | null {
-    let mostRecent: { id: string; lastUpdated: Date } | null = null
-    for (const [sessionId, state] of stateStore) {
-        if (!mostRecent || state.lastUpdated > mostRecent.lastUpdated) {
-            mostRecent = { id: sessionId, lastUpdated: state.lastUpdated }
-        }
-    }
-    return mostRecent?.id || null
-}
-
 function ensureSessionStateInitialized(sessionId: string): void {
     if (!sessionId) return
     if (!isLikelyMcpSessionId(sessionId)) return
@@ -206,17 +195,6 @@ function handleRequest(
 
     if (url.pathname === "/" || url.pathname === "/index.html") {
         const sessionId = url.searchParams.get("mcp") || ""
-
-        // Auto-redirect to most recent session if no sessionId provided
-        if (!sessionId) {
-            const recentSessionId = getMostRecentSessionId()
-            if (recentSessionId) {
-                res.writeHead(302, { Location: `/?mcp=${recentSessionId}` })
-                res.end()
-                return
-            }
-        }
-
         ensureSessionStateInitialized(sessionId)
 
         res.writeHead(200, { "Content-Type": "text/html" })
@@ -397,202 +375,85 @@ function getHtmlPage(sessionId: string): string {
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Next AI Draw.io</title>
+    <title>Draw.io MCP</title>
     <style>
-        @import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&display=swap');
         * { margin: 0; padding: 0; box-sizing: border-box; }
         html, body { width: 100%; height: 100%; overflow: hidden; }
         #container { width: 100%; height: 100%; display: flex; flex-direction: column; }
         #header {
-            padding: 0 20px; height: 52px;
-            background: linear-gradient(to bottom, #ffffff, #fafbfc);
-            border-bottom: 1px solid #e8ecf0;
-            font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
+            padding: 8px 16px; background: #1a1a2e; color: #eee;
+            font-family: system-ui, sans-serif; font-size: 14px;
             display: flex; justify-content: space-between; align-items: center;
-            box-shadow: 0 1px 3px rgba(0,0,0,0.04);
-            position: relative; z-index: 10;
-        }
-        #header .brand {
-            display: flex; align-items: center; gap: 10px;
-        }
-        #header .logo {
-            width: 28px; height: 28px; border-radius: 6px;
-            background: #18181b;
-            display: flex; align-items: center; justify-content: center;
-            overflow: hidden;
-        }
-        #header .logo img { width: 20px; height: 20px; filter: brightness(0) invert(1); }
-        #header .title {
-            font-size: 15px; font-weight: 600; color: #1a1a2e;
-            letter-spacing: -0.3px;
-        }
-        #header .session {
-            font-size: 11px; color: #8b95a5; font-weight: 400;
-            background: #f1f3f9; padding: 3px 8px; border-radius: 4px;
-            margin-left: 12px; font-family: 'SF Mono', Monaco, monospace;
-        }
-        #header .right { display: flex; align-items: center; gap: 12px; }
-        #save-btn {
-            display: flex; align-items: center; gap: 6px;
-            padding: 7px 14px; border-radius: 8px; font-size: 13px;
-            background: linear-gradient(to bottom, #18181b, #27272a);
-            color: white; border: none; cursor: pointer;
-            font-weight: 500; font-family: inherit;
-            box-shadow: 0 1px 2px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.1);
-            transition: all 0.15s ease;
-        }
-        #save-btn svg { width: 14px; height: 14px; }
-        #save-btn:hover {
-            background: linear-gradient(to bottom, #27272a, #3f3f46);
-            transform: translateY(-1px);
-            box-shadow: 0 3px 8px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.1);
-        }
-        #save-btn:active { transform: translateY(0); }
-        #save-btn:disabled, #history-btn:disabled {
-            background: #e5e7eb; color: #9ca3af;
-            cursor: not-allowed; transform: none; box-shadow: none;
-        }
-        #history-btn {
-            display: flex; align-items: center; gap: 6px;
-            padding: 7px 14px; border-radius: 8px; font-size: 13px;
-            background: #f4f4f5; color: #3f3f46; border: 1px solid #e4e4e7;
-            cursor: pointer; font-weight: 500; font-family: inherit;
-            transition: all 0.15s ease;
-        }
-        #history-btn svg { width: 14px; height: 14px; }
-        #history-btn:hover {
-            background: #e4e4e7; border-color: #d4d4d8;
         }
+        #header .session { color: #888; font-size: 12px; }
+        #header .status { font-size: 12px; }
+        #header .status.connected { color: #4ade80; }
+        #header .status.disconnected { color: #f87171; }
         #drawio { flex: 1; border: none; }
-        #history-modal, #save-modal {
-            display: none; position: fixed; inset: 0;
-            background: rgba(0,0,0,0.4); backdrop-filter: blur(4px);
-            z-index: 2000; align-items: center; justify-content: center;
-        }
-        #history-modal.open, #save-modal.open { display: flex; }
-        .modal-content {
-            background: white; border-radius: 16px;
-            width: 90%; max-width: 480px; max-height: 70vh;
-            display: flex; flex-direction: column;
-            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
-            font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
-            animation: modalIn 0.2s ease-out;
-        }
-        @keyframes modalIn {
-            from { opacity: 0; transform: scale(0.95) translateY(-10px); }
-            to { opacity: 1; transform: scale(1) translateY(0); }
-        }
-        .modal-header {
-            padding: 20px 24px 16px; border-bottom: 1px solid #f1f3f5;
-        }
-        .modal-header h2 {
-            font-size: 17px; font-weight: 600; margin: 0; color: #18181b;
-            letter-spacing: -0.3px;
-        }
-        .modal-body { flex: 1; overflow-y: auto; padding: 20px 24px; }
-        .modal-footer {
-            padding: 16px 24px; border-top: 1px solid #f1f3f5;
-            display: flex; gap: 10px; justify-content: flex-end;
-        }
-        .history-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
-        .history-item {
-            border: 2px solid #e4e4e7; border-radius: 10px; padding: 10px;
-            cursor: pointer; text-align: center; transition: all 0.15s ease;
-            background: #fafafa;
-        }
-        .history-item:hover { border-color: #a1a1aa; background: white; }
-        .history-item.selected {
-            border-color: #18181b; background: white;
-            box-shadow: 0 0 0 3px rgba(24,24,27,0.1);
-        }
-        .history-item .thumb {
-            aspect-ratio: 4/3; background: #f4f4f5; border-radius: 6px;
+        #history-btn {
+            position: fixed; bottom: 24px; right: 24px;
+            width: 48px; height: 48px; border-radius: 50%;
+            background: #3b82f6; color: white; border: none; cursor: pointer;
+            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
             display: flex; align-items: center; justify-content: center;
-            margin-bottom: 6px; overflow: hidden;
+            z-index: 1000;
+        }
+        #history-btn:hover { background: #2563eb; }
+        #history-btn:disabled { background: #6b7280; cursor: not-allowed; }
+        #history-btn svg { width: 24px; height: 24px; }
+        #history-modal {
+            display: none; position: fixed; inset: 0;
+            background: rgba(0,0,0,0.5); z-index: 2000;
+            align-items: center; justify-content: center;
+        }
+        #history-modal.open { display: flex; }
+        .modal-content {
+            background: white; border-radius: 12px;
+            width: 90%; max-width: 500px; max-height: 70vh;
+            display: flex; flex-direction: column;
+        }
+        .modal-header { padding: 16px; border-bottom: 1px solid #e5e7eb; }
+        .modal-header h2 { font-size: 18px; margin: 0; }
+        .modal-body { flex: 1; overflow-y: auto; padding: 16px; }
+        .modal-footer { padding: 12px 16px; border-top: 1px solid #e5e7eb; display: flex; gap: 8px; justify-content: flex-end; }
+        .history-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
+        .history-item {
+            border: 2px solid #e5e7eb; border-radius: 8px; padding: 8px;
+            cursor: pointer; text-align: center;
+        }
+        .history-item:hover { border-color: #3b82f6; }
+        .history-item.selected { border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59,130,246,0.3); }
+        .history-item .thumb {
+            aspect-ratio: 4/3; background: #f3f4f6; border-radius: 4px;
+            display: flex; align-items: center; justify-content: center;
+            margin-bottom: 4px; overflow: hidden;
         }
         .history-item .thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
-        .history-item .label { font-size: 11px; color: #71717a; font-weight: 500; }
-        .btn {
-            padding: 9px 18px; border-radius: 8px; font-size: 13px;
-            cursor: pointer; border: none; font-weight: 500;
-            font-family: inherit; transition: all 0.15s ease;
-        }
-        .btn-primary {
-            background: linear-gradient(to bottom, #18181b, #27272a);
-            color: white;
-            box-shadow: 0 1px 2px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.1);
-        }
-        .btn-primary:hover {
-            background: linear-gradient(to bottom, #27272a, #3f3f46);
-            transform: translateY(-1px);
-        }
-        .btn-primary:disabled {
-            background: #e4e4e7; color: #a1a1aa;
-            cursor: not-allowed; transform: none; box-shadow: none;
-        }
-        .btn-secondary {
-            background: #f4f4f5; color: #3f3f46; border: 1px solid #e4e4e7;
-        }
-        .btn-secondary:hover { background: #e4e4e7; }
-        .empty { text-align: center; padding: 40px; color: #71717a; font-size: 14px; }
-        .form-group { margin-bottom: 18px; }
-        .form-group label {
-            display: block; font-size: 13px; font-weight: 500;
-            margin-bottom: 8px; color: #3f3f46;
-        }
-        .form-group select, .form-group input {
-            width: 100%; padding: 10px 14px; border: 1px solid #e4e4e7;
-            border-radius: 8px; font-size: 14px; outline: none;
-            font-family: inherit; background: white;
-            transition: all 0.15s ease;
-        }
-        .form-group select:focus, .form-group input:focus {
-            border-color: #18181b;
-            box-shadow: 0 0 0 3px rgba(24,24,27,0.08);
-        }
-        .filename-group { display: flex; }
-        .filename-group input { border-radius: 8px 0 0 8px; border-right: none; }
-        .filename-group .ext {
-            padding: 10px 14px; background: #f4f4f5; border: 1px solid #e4e4e7;
-            border-radius: 0 8px 8px 0; font-size: 13px; color: #71717a;
-            font-family: 'SF Mono', Monaco, monospace;
-        }
+        .history-item .label { font-size: 12px; color: #666; }
+        .btn { padding: 8px 16px; border-radius: 6px; font-size: 14px; cursor: pointer; border: none; }
+        .btn-primary { background: #3b82f6; color: white; }
+        .btn-primary:disabled { background: #93c5fd; cursor: not-allowed; }
+        .btn-secondary { background: #f3f4f6; color: #374151; }
+        .empty { text-align: center; padding: 40px; color: #666; }
     </style>
 </head>
 <body>
     <div id="container">
         <div id="header">
-            <div class="brand">
-                <div class="logo">
-                    <svg viewBox="0 0 1536 1536" fill="#ffffff">
-                        <g transform="translate(0,1536) scale(0.1,-0.1)">
-                            <path d="M2765 14404 c-100 -29 -181 -58 -225 -82 -227 -125 -359 -296 -431 -560 -19 -70 -19 -108 -19 -1175 0 -1068 1 -1104 20 -1172 58 -206 159 -356 319 -474 71 -53 199 -121 226 -121 9 0 26 -5 38 -12 12 -6 62 -19 112 -29 85 -17 207 -18 2219 -19 1172 0 2133 -3 2138 -8 4 -4 7 -246 6 -538 l-3 -529 -2330 -5 c-2506 -6 -2373 -3 -2470 -54 -61 -31 -150 -113 -194 -178 -87 -128 -82 -77 -90 -1025 l-6 -838 -360 -6 c-292 -4 -368 -8 -405 -21 -194 -68 -303 -177 -373 -372 l-22 -61 1 -2887 c1 -2716 2 -2890 18 -2935 56 -153 161 -276 286 -334 126 -59 0 -54 1400 -54 1394 0 1290 -4 1410 53 95 45 198 148 242 241 62 133 58 -93 58 3026 0 2992 1 2883 -40 2990 -59 156 -183 272 -360 337 -25 9 -146 14 -440 18 l-405 5 0 540 0 540 2020 3 c1111 1 2030 0 2043 -3 l22 -5 -2 -538 -3 -537 -380 -6 c-312 -4 -388 -8 -426 -21 -195 -68 -326 -204 -383 -399 -15 -51 -16 -295 -16 -2921 0 -2778 1 -2867 19 -2920 36 -104 72 -167 134 -230 75 -78 115 -105 222 -151 l50 -22 1219 -3 c672 -1 1255 1 1300 6 109 12 217 63 298 140 73 69 107 118 144 208 l29 69 3 2880 c2 2687 1 2884 -15 2945 -48 183 -188 332 -373 398 -37 13 -114 17 -430 21 l-385 6 -3 534 c-2 421 0 536 10 543 7 4 925 8 2039 8 1718 0 2028 -2 2038 -14 8 -10 11 -154 11 -531 -1 -284 -4 -523 -7 -531 -4 -12 -69 -14 -392 -14 -354 0 -391 -2 -448 -20 -168 -52 -282 -148 -353 -295 -22 -45 -40 -91 -40 -103 0 -11 -5 -33 -10 -47 -7 -18 -10 -988 -10 -2875 0 -2393 2 -2858 14 -2902 43 -167 148 -298 293 -369 57 -27 107 -44 151 -50 88 -11 2429 -11 2508 0 210 31 416 238 445 450 6 39 8 1245 7 2926 -3 2713 -4 2862 -21 2900 -41 93 -74 150 -110 191 -46 52 -149 134 -169 134 -8 0 -19 5 -24 10 -6 6 -42 19 -80 30 -63 18 -100 20 -415 20 -307 0 -348 2 -353 16 -3 9 -6 390 -6 848 0 797 -1 834 -19 886 -31 87 -50 118 -111 183 -66 70 -141 119 -221 144 -50 16 -228 18 -2389 23 l-2335 5 0 535 0 535 2165 5 c1191 3 2170 8 2176 12 6 4 35 12 65 17 201 35 435 198 539 376 55 93 82 153 110 245 19 63 20 94 20 1167 0 1047 -1 1106 -19 1180 -70 290 -275 523 -539 613 -160 54 232 50 -5028 49 -4182 0 -4856 -2 -4899 -15z"/>
-                        </g>
-                    </svg>
-                </div>
-                <span class="title">Next AI Draw.io</span>
-                ${sessionId ? `<span class="session">${sessionId.slice(-8)}</span>` : ""}
-            </div>
-            <div class="right">
-                <button id="history-btn" title="History" ${sessionId ? "" : "disabled"}>
-                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-                        <circle cx="12" cy="12" r="10"></circle>
-                        <polyline points="12 6 12 12 16 14"></polyline>
-                    </svg>
-                    History
-                </button>
-                <button id="save-btn" ${sessionId ? "" : "disabled"}>
-                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-                        <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"></path>
-                        <polyline points="7 10 12 15 17 10"></polyline>
-                        <line x1="12" y1="15" x2="12" y2="3"></line>
-                    </svg>
-                    Download
-                </button>
+            <div>
+                <strong>Draw.io MCP</strong>
+                <span class="session">${sessionId ? `Session: ${sessionId}` : "No session"}</span>
             </div>
+            <div id="status" class="status disconnected">Connecting...</div>
         </div>
-        <iframe id="drawio" src="${normalizeUrl(DRAWIO_BASE_URL)}/?embed=1&proto=json&spin=1&libraries=1&noSaveBtn=1&noExitBtn=1&saveAndExit=0"></iframe>
+        <iframe id="drawio" src="${normalizeUrl(DRAWIO_BASE_URL)}/?embed=1&proto=json&spin=1&libraries=1"></iframe>
     </div>
+    <button id="history-btn" title="History" ${sessionId ? "" : "disabled"}>
+        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+            <circle cx="12" cy="12" r="10"></circle>
+            <polyline points="12 6 12 12 16 14"></polyline>
+        </svg>
+    </button>
     <div id="history-modal">
         <div class="modal-content">
             <div class="modal-header"><h2>History</h2></div>
@@ -606,35 +467,10 @@ function getHtmlPage(sessionId: string): string {
             </div>
         </div>
     </div>
-    <div id="save-modal">
-        <div class="modal-content">
-            <div class="modal-header"><h2>Download Diagram</h2></div>
-            <div class="modal-body">
-                <div class="form-group">
-                    <label>Format</label>
-                    <select id="save-format">
-                        <option value="drawio">Draw.io (.drawio)</option>
-                        <option value="png">PNG Image (.png)</option>
-                        <option value="svg">SVG Vector (.svg)</option>
-                    </select>
-                </div>
-                <div class="form-group">
-                    <label>Filename</label>
-                    <div class="filename-group">
-                        <input type="text" id="save-filename" value="diagram" placeholder="Enter filename">
-                        <span class="ext" id="save-ext">.drawio</span>
-                    </div>
-                </div>
-            </div>
-            <div class="modal-footer">
-                <button class="btn btn-secondary" id="save-cancel-btn">Cancel</button>
-                <button class="btn btn-primary" id="save-confirm-btn">Save</button>
-            </div>
-        </div>
-    </div>
     <script>
         const sessionId = "${sessionId}";
         const iframe = document.getElementById('drawio');
+        const statusEl = document.getElementById('status');
         let currentVersion = 0, isReady = false, pendingXml = null, lastXml = null;
         let pendingSvgExport = null;
         let pendingAiSvg = false;
@@ -645,6 +481,8 @@ function getHtmlPage(sessionId: string): string {
                 const msg = JSON.parse(e.data);
                 if (msg.event === 'init') {
                     isReady = true;
+                    statusEl.textContent = 'Ready';
+                    statusEl.className = 'status connected';
                     if (pendingXml) { loadDiagram(pendingXml); pendingXml = null; }
                 } else if ((msg.event === 'save' || msg.event === 'autosave') && msg.xml && msg.xml !== lastXml) {
                     // Request SVG export, then push state with SVG
@@ -653,23 +491,6 @@ function getHtmlPage(sessionId: string): string {
                     // Fallback if export doesn't respond
                     setTimeout(() => { if (pendingSvgExport === msg.xml) { pushState(msg.xml, ''); pendingSvgExport = null; } }, 2000);
                 } else if (msg.event === 'export' && msg.data) {
-                    // Handle file download export (PNG/SVG only, drawio uses lastXml directly)
-                    if (pendingDownload && (pendingDownload.format === 'png' || pendingDownload.format === 'svg')) {
-                        const dl = pendingDownload;
-                        pendingDownload = null;
-                        let dataUrl = msg.data;
-                        if (!dataUrl.startsWith('data:')) {
-                            const mime = dl.format === 'png' ? 'image/png' : 'image/svg+xml';
-                            dataUrl = 'data:' + mime + ';base64,' + btoa(unescape(encodeURIComponent(msg.data)));
-                        }
-                        const a = document.createElement('a');
-                        a.href = dataUrl; a.download = dl.filename;
-                        document.body.appendChild(a); a.click(); document.body.removeChild(a);
-                        saveModal.classList.remove('open');
-                        saveConfirmBtn.disabled = false;
-                        saveConfirmBtn.textContent = 'Save';
-                        return;
-                    }
                     // Handle sync export (XML format) - server requested fresh state
                     if (pendingSyncExport && !msg.data.startsWith('data:') && !msg.data.startsWith('<svg')) {
                         pendingSyncExport = false;
@@ -742,64 +563,6 @@ function getHtmlPage(sessionId: string): string {
 
         if (sessionId) { poll(); setInterval(poll, 2000); }
 
-        // Save modal
-        const saveBtn = document.getElementById('save-btn');
-        const saveModal = document.getElementById('save-modal');
-        const saveFormat = document.getElementById('save-format');
-        const saveFilename = document.getElementById('save-filename');
-        const saveExt = document.getElementById('save-ext');
-        const saveCancelBtn = document.getElementById('save-cancel-btn');
-        const saveConfirmBtn = document.getElementById('save-confirm-btn');
-        let pendingDownload = null;
-
-        const extMap = { drawio: '.drawio', png: '.png', svg: '.svg' };
-
-        saveBtn.onclick = () => {
-            if (!sessionId || !isReady) return;
-            saveModal.classList.add('open');
-            saveFilename.focus();
-            saveFilename.select();
-        };
-
-        saveFormat.onchange = () => {
-            saveExt.textContent = extMap[saveFormat.value] || '.drawio';
-        };
-
-        saveCancelBtn.onclick = () => { saveModal.classList.remove('open'); };
-        saveModal.onclick = (e) => { if (e.target === saveModal) saveCancelBtn.onclick(); };
-
-        saveConfirmBtn.onclick = () => {
-            const format = saveFormat.value;
-            const filename = (saveFilename.value.trim() || 'diagram') + extMap[format];
-            saveConfirmBtn.disabled = true;
-            saveConfirmBtn.textContent = 'Exporting...';
-
-            if (format === 'drawio') {
-                // Use lastXml directly instead of requesting export (avoids race with SVG exports)
-                let xmlData = lastXml || '';
-                if (xmlData && !xmlData.includes('<mxfile')) {
-                    xmlData = '<mxfile host="mcp"><diagram name="Page-1">' + xmlData + '</diagram></mxfile>';
-                }
-                const blob = new Blob([xmlData], { type: 'application/xml' });
-                const url = URL.createObjectURL(blob);
-                const a = document.createElement('a');
-                a.href = url; a.download = filename;
-                document.body.appendChild(a); a.click(); document.body.removeChild(a);
-                URL.revokeObjectURL(url);
-                saveModal.classList.remove('open');
-                saveConfirmBtn.disabled = false;
-                saveConfirmBtn.textContent = 'Save';
-            } else if (format === 'png') {
-                pendingDownload = { format: 'png', filename };
-                iframe.contentWindow.postMessage(JSON.stringify({ action: 'export', format: 'png', scale: 2 }), '*');
-                setTimeout(() => { saveConfirmBtn.disabled = false; saveConfirmBtn.textContent = 'Save'; pendingDownload = null; }, 5000);
-            } else if (format === 'svg') {
-                pendingDownload = { format: 'svg', filename };
-                iframe.contentWindow.postMessage(JSON.stringify({ action: 'export', format: 'svg' }), '*');
-                setTimeout(() => { saveConfirmBtn.disabled = false; saveConfirmBtn.textContent = 'Save'; pendingDownload = null; }, 5000);
-            }
-        };
-
         // History UI
         const historyBtn = document.getElementById('history-btn');
         const historyModal = document.getElementById('history-modal');

proxy.ts

@@ -31,7 +31,6 @@ export function proxy(request: NextRequest) {
     if (
         pathname.startsWith("/api/") ||
         pathname.startsWith("/_next/") ||
-        pathname.startsWith("/drawio") ||
         pathname.includes("/favicon") ||
         /\.(.*)$/.test(pathname)
     ) {

scripts/afterPack.cjs

@@ -1,7 +1,6 @@
 /**
  * electron-builder afterPack hook
  * Copies node_modules to the standalone directory in the packaged app
- * and ad-hoc signs macOS apps for offline draw.io bundle compatibility
  */
 
 const {
@@ -13,7 +12,6 @@ const {
     statSync,
 } = require("fs")
 const path = require("path")
-const { execSync } = require("child_process")
 
 /**
  * Copy directory recursively, converting symlinks to regular files/directories.
@@ -82,22 +80,4 @@ module.exports = async (context) => {
                 "Ensure 'npm run electron:prepare' was run before building.",
         )
     }
-
-    // Ad-hoc sign macOS apps to fix signature issues with bundled draw.io files
-    if (context.packager.platform.name === "mac") {
-        const appPath = path.join(
-            appOutDir,
-            `${context.packager.appInfo.productFilename}.app`,
-        )
-        console.log(`[afterPack] Ad-hoc signing macOS app: ${appPath}`)
-        try {
-            execSync(`codesign --force --deep --sign - "${appPath}"`, {
-                stdio: "inherit",
-            })
-            console.log("[afterPack] Ad-hoc signing completed successfully")
-        } catch (error) {
-            console.error("[afterPack] Ad-hoc signing failed:", error.message)
-            throw error
-        }
-    }
 }