fix: handle fork PRs in auto-format workflow

- Use head.sha instead of head_ref for checkout (works for forks)
- For fork PRs: fail with helpful message if formatting needed
- For same-repo PRs: auto-commit and push as before

.github/ISSUE_TEMPLATE/enhancement.md

@@ -1,24 +0,0 @@
----
-name: Enhancement
-about: Suggest an improvement to existing functionality
-title: '[Enhancement] '
-labels: enhancement
-assignees: ''
----
-
-> **Note**: This template is just a guide. Feel free to ignore the format entirely - any feedback is welcome! Don't let the template stop you from sharing your ideas.
-
-## Current Behavior
-Describe how the feature currently works.
-
-## Proposed Enhancement
-How you'd like this to be improved.
-
-## Motivation
-Why this enhancement would be beneficial.
-
-## Screenshots / Mockups
-If applicable, add screenshots or mockups to illustrate the proposed changes.
-
-## Additional Context
-Any other information about the enhancement request.

.github/workflows/auto-format.yml

@@ -12,13 +12,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
 

.github/workflows/ci.yml

@@ -20,10 +20,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'

.github/workflows/docker-build.yml

@@ -26,7 +26,7 @@ jobs:
       
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -69,7 +69,7 @@ jobs:
       # Push to AWS ECR for App Runner auto-deploy
       - name: Configure AWS credentials
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/main'
-        uses: aws-actions/configure-aws-credentials@v5
+        uses: aws-actions/configure-aws-credentials@v4
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}

.github/workflows/electron-release.yml

@@ -29,10 +29,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: "npm"

README.md

@@ -242,11 +242,6 @@ Or you can deploy by this button.
 
 Be sure to **set the environment variables** in the Vercel dashboard as you did in your local `.env.local` file.
 
-## Deploy on Cloudflare Workers
-
-[Go to Cloudflare Deploy Guide](./docs/Cloudflare_Deploy.md)
-
-
 
 ## Multi-Provider Support
 

components/chat-input.tsx

@@ -1,15 +1,22 @@
 "use client"
 
-import { Image as ImageIcon, Loader2, Send, Trash2 } from "lucide-react"
+import {
+    Download,
+    History,
+    Image as ImageIcon,
+    Loader2,
+    Send,
+    Trash2,
+} from "lucide-react"
 import type React from "react"
 import { useCallback, useEffect, useRef, useState } from "react"
 import { toast } from "sonner"
 import { ButtonWithTooltip } from "@/components/button-with-tooltip"
 import { ErrorToast } from "@/components/error-toast"
-
+import { HistoryDialog } from "@/components/history-dialog"
 import { ModelSelector } from "@/components/model-selector"
 import { ResetWarningModal } from "@/components/reset-warning-modal"
-
+import { SaveDialog } from "@/components/save-dialog"
 import { Button } from "@/components/ui/button"
 import { Switch } from "@/components/ui/switch"
 import { Textarea } from "@/components/ui/textarea"
@@ -18,7 +25,7 @@ import {
     TooltipContent,
     TooltipTrigger,
 } from "@/components/ui/tooltip"
-
+import { useDiagram } from "@/contexts/diagram-context"
 import { useDictionary } from "@/hooks/use-dictionary"
 import { formatMessage } from "@/lib/i18n/utils"
 import { isPdfFile, isTextFile } from "@/lib/pdf-utils"
@@ -145,7 +152,8 @@ interface ChatInputProps {
         File,
         { text: string; charCount: number; isExtracting: boolean }
     >
-
+    showHistory?: boolean
+    onToggleHistory?: (show: boolean) => void
     sessionId?: string
     error?: Error | null
     minimalStyle?: boolean
@@ -154,7 +162,6 @@ interface ChatInputProps {
     models?: FlattenedModel[]
     selectedModelId?: string
     onModelSelect?: (modelId: string | undefined) => void
-    showUnvalidatedModels?: boolean
     onConfigureModels?: () => void
 }
 
@@ -167,18 +174,24 @@ export function ChatInput({
     files = [],
     onFileChange = () => {},
     pdfData = new Map(),
-
+    showHistory = false,
+    onToggleHistory = () => {},
+    sessionId,
     error = null,
     minimalStyle = false,
     onMinimalStyleChange = () => {},
     models = [],
     selectedModelId,
     onModelSelect = () => {},
-    showUnvalidatedModels = false,
     onConfigureModels = () => {},
 }: ChatInputProps) {
     const dict = useDictionary()
-
+    const {
+        diagramHistory,
+        saveDiagramToFile,
+        showSaveDialog,
+        setShowSaveDialog,
+    } = useDiagram()
     const textareaRef = useRef<HTMLTextAreaElement>(null)
     const fileInputRef = useRef<HTMLInputElement>(null)
     const [isDragging, setIsDragging] = useState(false)
@@ -371,6 +384,11 @@ export function ChatInput({
                             onClear={handleClear}
                         />
 
+                        <HistoryDialog
+                            showHistory={showHistory}
+                            onToggleHistory={onToggleHistory}
+                        />
+
                         <Tooltip>
                             <TooltipTrigger asChild>
                                 <div className="flex items-center gap-1.5">
@@ -401,38 +419,73 @@ export function ChatInput({
                     </div>
 
                     <div className="flex items-center gap-1 overflow-hidden justify-end">
-                        <div className="flex items-center gap-1 overflow-x-hidden">
+                        <ButtonWithTooltip
-                            <ButtonWithTooltip
+                            type="button"
-                                type="button"
+                            variant="ghost"
-                                variant="ghost"
+                            size="sm"
-                                size="sm"
+                            onClick={() => onToggleHistory(true)}
-                                onClick={triggerFileInput}
+                            disabled={isDisabled || diagramHistory.length === 0}
-                                disabled={isDisabled}
+                            tooltipContent={dict.chat.diagramHistory}
-                                tooltipContent={dict.chat.uploadFile}
+                            className="h-8 w-8 p-0 text-muted-foreground hover:text-foreground"
-                                className="h-8 w-8 p-0 text-muted-foreground hover:text-foreground"
+                        >
-                            >
+                            <History className="h-4 w-4" />
-                                <ImageIcon className="h-4 w-4" />
+                        </ButtonWithTooltip>
-                            </ButtonWithTooltip>
+
+                        <ButtonWithTooltip
+                            type="button"
+                            variant="ghost"
+                            size="sm"
+                            onClick={() => setShowSaveDialog(true)}
+                            disabled={isDisabled}
+                            tooltipContent={dict.chat.saveDiagram}
+                            className="h-8 w-8 p-0 text-muted-foreground hover:text-foreground"
+                        >
+                            <Download className="h-4 w-4" />
+                        </ButtonWithTooltip>
+
+                        <SaveDialog
+                            open={showSaveDialog}
+                            onOpenChange={setShowSaveDialog}
+                            onSave={(filename, format) =>
+                                saveDiagramToFile(filename, format, sessionId)
+                            }
+                            defaultFilename={`diagram-${new Date()
+                                .toISOString()
+                                .slice(0, 10)}`}
+                        />
+
+                        <ButtonWithTooltip
+                            type="button"
+                            variant="ghost"
+                            size="sm"
+                            onClick={triggerFileInput}
+                            disabled={isDisabled}
+                            tooltipContent={dict.chat.uploadFile}
+                            className="h-8 w-8 p-0 text-muted-foreground hover:text-foreground"
+                        >
+                            <ImageIcon className="h-4 w-4" />
+                        </ButtonWithTooltip>
+
+                        <input
+                            type="file"
+                            ref={fileInputRef}
+                            className="hidden"
+                            onChange={handleFileChange}
+                            accept="image/*,.pdf,application/pdf,text/*,.md,.markdown,.json,.csv,.xml,.yaml,.yml,.toml"
+                            multiple
+                            disabled={isDisabled}
+                        />
 
-                            <input
-                                type="file"
-                                ref={fileInputRef}
-                                className="hidden"
-                                onChange={handleFileChange}
-                                accept="image/*,.pdf,application/pdf,text/*,.md,.markdown,.json,.csv,.xml,.yaml,.yml,.toml"
-                                multiple
-                                disabled={isDisabled}
-                            />
-                        </div>
                         <ModelSelector
                             models={models}
                             selectedModelId={selectedModelId}
                             onSelect={onModelSelect}
                             onConfigure={onConfigureModels}
                             disabled={isDisabled}
-                            showUnvalidatedModels={showUnvalidatedModels}
                         />
+
                         <div className="w-px h-5 bg-border mx-1" />
+
                         <Button
                             type="submit"
                             disabled={isDisabled || !input.trim()}

components/chat-panel.tsx

@@ -154,6 +154,7 @@ export default function ChatPanel({
     // File processing using extracted hook
     const { files, pdfData, handleFileChange, setFiles } = useFileProcessor()
 
+    const [showHistory, setShowHistory] = useState(false)
     const [showSettingsDialog, setShowSettingsDialog] = useState(false)
     const [showModelConfigDialog, setShowModelConfigDialog] = useState(false)
 
@@ -942,11 +943,7 @@ export default function ChatPanel({
                     <div className="flex items-center gap-2 overflow-x-hidden">
                         <div className="flex items-center gap-2">
                             <Image
-                                src={
+                                src="/favicon.ico"
-                                    darkMode
-                                        ? "/favicon-white.svg"
-                                        : "/favicon.ico"
-                                }
                                 alt="Next AI Drawio"
                                 width={isMobile ? 24 : 28}
                                 height={isMobile ? 24 : 28}
@@ -1065,6 +1062,8 @@ export default function ChatPanel({
                     files={files}
                     onFileChange={handleFileChange}
                     pdfData={pdfData}
+                    showHistory={showHistory}
+                    onToggleHistory={setShowHistory}
                     sessionId={sessionId}
                     error={error}
                     minimalStyle={minimalStyle}
@@ -1072,7 +1071,6 @@ export default function ChatPanel({
                     models={modelConfig.models}
                     selectedModelId={modelConfig.selectedModelId}
                     onModelSelect={modelConfig.setSelectedModelId}
-                    showUnvalidatedModels={modelConfig.showUnvalidatedModels}
                     onConfigureModels={() => setShowModelConfigDialog(true)}
                 />
             </footer>
@@ -1085,7 +1083,6 @@ export default function ChatPanel({
                 onToggleDrawioUi={onToggleDrawioUi}
                 darkMode={darkMode}
                 onToggleDarkMode={onToggleDarkMode}
-                sessionId={sessionId}
             />
 
             <ModelConfigDialog

components/model-config-dialog.tsx

@@ -50,7 +50,6 @@ import {
     SelectTrigger,
     SelectValue,
 } from "@/components/ui/select"
-import { Switch } from "@/components/ui/switch"
 import { useDictionary } from "@/hooks/use-dictionary"
 import type { UseModelConfigReturn } from "@/hooks/use-model-config"
 import { formatMessage } from "@/lib/i18n/utils"
@@ -1448,23 +1447,10 @@ export function ModelConfigDialog({
 
                 {/* Footer */}
                 <div className="px-6 py-3 border-t border-border-subtle bg-surface-1/30 shrink-0">
-                    <div className="flex items-center justify-between">
+                    <p className="text-xs text-muted-foreground text-center flex items-center justify-center gap-1.5">
-                        <div className="flex items-center gap-2">
+                        <Key className="h-3 w-3" />
-                            <Switch
+                        {dict.modelConfig.apiKeyStored}
-                                checked={modelConfig.showUnvalidatedModels}
+                    </p>
-                                onCheckedChange={
-                                    modelConfig.setShowUnvalidatedModels
-                                }
-                            />
-                            <Label className="text-xs text-muted-foreground cursor-pointer">
-                                {dict.modelConfig.showUnvalidatedModels}
-                            </Label>
-                        </div>
-                        <p className="text-xs text-muted-foreground flex items-center gap-1.5">
-                            <Key className="h-3 w-3" />
-                            {dict.modelConfig.apiKeyStored}
-                        </p>
-                    </div>
                 </div>
             </DialogContent>
 

components/model-selector.tsx

@@ -1,13 +1,6 @@
 "use client"
 
-import {
+import { Bot, Check, ChevronDown, Server, Settings2 } from "lucide-react"
-    AlertTriangle,
-    Bot,
-    Check,
-    ChevronDown,
-    Server,
-    Settings2,
-} from "lucide-react"
 import { useMemo, useState } from "react"
 import {
     ModelSelectorContent,
@@ -33,7 +26,6 @@ interface ModelSelectorProps {
     onSelect: (modelId: string | undefined) => void
     onConfigure: () => void
     disabled?: boolean
-    showUnvalidatedModels?: boolean
 }
 
 // Map our provider names to models.dev logo names
@@ -75,20 +67,17 @@ export function ModelSelector({
     onSelect,
     onConfigure,
     disabled = false,
-    showUnvalidatedModels = false,
 }: ModelSelectorProps) {
     const dict = useDictionary()
     const [open, setOpen] = useState(false)
-    // Filter models based on showUnvalidatedModels setting
+    // Only show validated models in the selector
-    const displayModels = useMemo(() => {
+    const validatedModels = useMemo(
-        if (showUnvalidatedModels) {
+        () => models.filter((m) => m.validated === true),
-            return models
+        [models],
-        }
+    )
-        return models.filter((m) => m.validated === true)
-    }, [models, showUnvalidatedModels])
     const groupedModels = useMemo(
-        () => groupModelsByProvider(displayModels),
+        () => groupModelsByProvider(validatedModels),
-        [displayModels],
+        [validatedModels],
     )
 
     // Find selected model for display
@@ -137,7 +126,7 @@ export function ModelSelector({
                 />
                 <ModelSelectorList className="[&::-webkit-scrollbar]:hidden [-ms-overflow-style:none] [scrollbar-width:none]">
                     <ModelSelectorEmpty>
-                        {displayModels.length === 0 && models.length > 0
+                        {validatedModels.length === 0 && models.length > 0
                             ? dict.modelConfig.noVerifiedModels
                             : dict.modelConfig.noModelsFound}
                     </ModelSelectorEmpty>
@@ -202,16 +191,6 @@ export function ModelSelector({
                                         <ModelSelectorName>
                                             {model.modelId}
                                         </ModelSelectorName>
-                                        {model.validated !== true && (
-                                            <span
-                                                title={
-                                                    dict.modelConfig
-                                                        .unvalidatedModelWarning
-                                                }
-                                            >
-                                                <AlertTriangle className="ml-auto h-3 w-3 text-warning" />
-                                            </span>
-                                        )}
                                     </ModelSelectorItem>
                                 ))}
                             </ModelSelectorGroup>
@@ -234,9 +213,7 @@ export function ModelSelector({
                     </ModelSelectorGroup>
                     {/* Info text */}
                     <div className="px-3 py-2 text-xs text-muted-foreground border-t">
-                        {showUnvalidatedModels
+                        {dict.modelConfig.onlyVerifiedShown}
-                            ? dict.modelConfig.allModelsShown
-                            : dict.modelConfig.onlyVerifiedShown}
                     </div>
                 </ModelSelectorList>
             </ModelSelectorContent>

components/settings-dialog.tsx

@@ -1,10 +1,8 @@
 "use client"
 
-import { Download, History, Moon, Sun } from "lucide-react"
+import { Moon, Sun } from "lucide-react"
 import { usePathname, useRouter, useSearchParams } from "next/navigation"
 import { Suspense, useEffect, useState } from "react"
-import { HistoryDialog } from "@/components/history-dialog"
-import { type ExportFormat, SaveDialog } from "@/components/save-dialog"
 import { Button } from "@/components/ui/button"
 import {
     Dialog,
@@ -23,7 +21,6 @@ import {
     SelectValue,
 } from "@/components/ui/select"
 import { Switch } from "@/components/ui/switch"
-import { useDiagram } from "@/contexts/diagram-context"
 import { useDictionary } from "@/hooks/use-dictionary"
 import { getApiEndpoint } from "@/lib/base-path"
 import { i18n, type Locale } from "@/lib/i18n/config"
@@ -68,7 +65,6 @@ interface SettingsDialogProps {
     onToggleDrawioUi: () => void
     darkMode: boolean
     onToggleDarkMode: () => void
-    sessionId?: string
 }
 
 export const STORAGE_ACCESS_CODE_KEY = "next-ai-draw-io-access-code"
@@ -90,7 +86,6 @@ function SettingsContent({
     onToggleDrawioUi,
     darkMode,
     onToggleDarkMode,
-    sessionId,
 }: SettingsDialogProps) {
     const dict = useDictionary()
     const router = useRouter()
@@ -100,21 +95,11 @@ function SettingsContent({
     const [closeProtection, setCloseProtection] = useState(true)
     const [isVerifying, setIsVerifying] = useState(false)
     const [error, setError] = useState("")
-    const [showHistory, setShowHistory] = useState(false)
-    const [showSaveDialog, setShowSaveDialog] = useState(false)
     const [accessCodeRequired, setAccessCodeRequired] = useState(
         () => getStoredAccessCodeRequired() ?? false,
     )
     const [currentLang, setCurrentLang] = useState("en")
 
-    // Get diagram context
-    const { diagramHistory, saveDiagramToFile } = useDiagram()
-
-    // Handler for saving diagram (RENAMED to avoid conflict)
-    const handleDiagramSave = (filename: string, format: ExportFormat) => {
-        saveDiagramToFile(filename, format, sessionId)
-    }
-
     useEffect(() => {
         // Only fetch if not cached in localStorage
         if (getStoredAccessCodeRequired() !== null) return
@@ -221,211 +206,158 @@ function SettingsContent({
     }
 
     return (
-        <>
+        <DialogContent className="sm:max-w-lg p-0 gap-0">
-            <DialogContent className="sm:max-w-lg p-0 gap-0">
+            {/* Header */}
-                {/* Header */}
+            <DialogHeader className="px-6 pt-6 pb-4">
-                <DialogHeader className="px-6 pt-6 pb-4">
+                <DialogTitle>{dict.settings.title}</DialogTitle>
-                    <DialogTitle>{dict.settings.title}</DialogTitle>
+                <DialogDescription className="mt-1">
-                    <DialogDescription className="mt-1">
+                    {dict.settings.description}
-                        {dict.settings.description}
+                </DialogDescription>
-                    </DialogDescription>
+            </DialogHeader>
-                </DialogHeader>
 
-                {/* Content */}
+            {/* Content */}
-                <div className="px-6 pb-6">
+            <div className="px-6 pb-6">
-                    <div className="divide-y divide-border-subtle">
+                <div className="divide-y divide-border-subtle">
-                        {/* Access Code (conditional) */}
+                    {/* Access Code (conditional) */}
-                        {accessCodeRequired && (
+                    {accessCodeRequired && (
-                            <div className="py-4 first:pt-0 space-y-3">
+                        <div className="py-4 first:pt-0 space-y-3">
-                                <div className="space-y-0.5">
+                            <div className="space-y-0.5">
-                                    <Label
+                                <Label
-                                        htmlFor="access-code"
+                                    htmlFor="access-code"
-                                        className="text-sm font-medium"
+                                    className="text-sm font-medium"
-                                    >
-                                        {dict.settings.accessCode}
-                                    </Label>
-                                    <p className="text-xs text-muted-foreground">
-                                        {dict.settings.accessCodeDescription}
-                                    </p>
-                                </div>
-                                <div className="flex gap-2">
-                                    <Input
-                                        id="access-code"
-                                        type="password"
-                                        value={accessCode}
-                                        onChange={(e) =>
-                                            setAccessCode(e.target.value)
-                                        }
-                                        onKeyDown={handleKeyDown}
-                                        placeholder={
-                                            dict.settings.accessCodePlaceholder
-                                        }
-                                        autoComplete="off"
-                                        className="h-9"
-                                    />
-                                    <Button
-                                        onClick={handleSave}
-                                        disabled={
-                                            isVerifying || !accessCode.trim()
-                                        }
-                                        className="h-9 px-4 rounded-xl"
-                                    >
-                                        {isVerifying ? "..." : dict.common.save}
-                                    </Button>
-                                </div>
-                                {error && (
-                                    <p className="text-xs text-destructive">
-                                        {error}
-                                    </p>
-                                )}
-                            </div>
-                        )}
-
-                        {/* Language */}
-                        <SettingItem
-                            label={dict.settings.language}
-                            description={dict.settings.languageDescription}
-                        >
-                            <Select
-                                value={currentLang}
-                                onValueChange={changeLanguage}
-                            >
-                                <SelectTrigger
-                                    id="language-select"
-                                    className="w-[120px] h-9 rounded-xl"
                                 >
-                                    <SelectValue />
+                                    {dict.settings.accessCode}
-                                </SelectTrigger>
+                                </Label>
-                                <SelectContent>
+                                <p className="text-xs text-muted-foreground">
-                                    {i18n.locales.map((locale) => (
+                                    {dict.settings.accessCodeDescription}
-                                        <SelectItem key={locale} value={locale}>
+                                </p>
-                                            {LANGUAGE_LABELS[locale]}
+                            </div>
-                                        </SelectItem>
-                                    ))}
-                                </SelectContent>
-                            </Select>
-                        </SettingItem>
-
-                        {/* Theme */}
-                        <SettingItem
-                            label={dict.settings.theme}
-                            description={dict.settings.themeDescription}
-                        >
-                            <Button
-                                id="theme-toggle"
-                                variant="outline"
-                                size="icon"
-                                onClick={onToggleDarkMode}
-                                className="h-9 w-9 rounded-xl border-border-subtle hover:bg-interactive-hover"
-                            >
-                                {darkMode ? (
-                                    <Sun className="h-4 w-4" />
-                                ) : (
-                                    <Moon className="h-4 w-4" />
-                                )}
-                            </Button>
-                        </SettingItem>
-
-                        {/* Draw.io Style */}
-                        <SettingItem
-                            label={dict.settings.drawioStyle}
-                            description={`${dict.settings.drawioStyleDescription} ${
-                                drawioUi === "min"
-                                    ? dict.settings.minimal
-                                    : dict.settings.sketch
-                            }`}
-                        >
-                            <Button
-                                id="drawio-ui"
-                                variant="outline"
-                                onClick={onToggleDrawioUi}
-                                className="h-9 w-[120px] rounded-xl border-border-subtle hover:bg-interactive-hover font-normal"
-                            >
-                                {dict.settings.switchTo}{" "}
-                                {drawioUi === "min"
-                                    ? dict.settings.sketch
-                                    : dict.settings.minimal}
-                            </Button>
-                        </SettingItem>
-
-                        {/* Close Protection */}
-                        <SettingItem
-                            label={dict.settings.closeProtection}
-                            description={
-                                dict.settings.closeProtectionDescription
-                            }
-                        >
-                            <Switch
-                                id="close-protection"
-                                checked={closeProtection}
-                                onCheckedChange={(checked) => {
-                                    setCloseProtection(checked)
-                                    localStorage.setItem(
-                                        STORAGE_CLOSE_PROTECTION_KEY,
-                                        checked.toString(),
-                                    )
-                                    onCloseProtectionChange?.(checked)
-                                }}
-                            />
-                        </SettingItem>
-
-                        {/* Diagram Actions */}
-                        <SettingItem
-                            label={dict.settings.diagramActions}
-                            description={
-                                dict.settings.diagramActionsDescription
-                            }
-                        >
                             <div className="flex gap-2">
+                                <Input
+                                    id="access-code"
+                                    type="password"
+                                    value={accessCode}
+                                    onChange={(e) =>
+                                        setAccessCode(e.target.value)
+                                    }
+                                    onKeyDown={handleKeyDown}
+                                    placeholder={
+                                        dict.settings.accessCodePlaceholder
+                                    }
+                                    autoComplete="off"
+                                    className="h-9"
+                                />
                                 <Button
-                                    id="history-button"
+                                    onClick={handleSave}
-                                    variant="outline"
+                                    disabled={isVerifying || !accessCode.trim()}
-                                    size="sm"
+                                    className="h-9 px-4 rounded-xl"
-                                    onClick={() => setShowHistory(true)}
-                                    disabled={diagramHistory.length === 0}
-                                    className="h-9 rounded-xl border-border-subtle hover:bg-interactive-hover"
                                 >
-                                    <History className="h-4 w-4 mr-1.5" />
+                                    {isVerifying ? "..." : dict.common.save}
-                                    {dict.settings.history}
-                                </Button>
-                                <Button
-                                    id="download-button"
-                                    variant="outline"
-                                    size="sm"
-                                    onClick={() => setShowSaveDialog(true)}
-                                    className="h-9 rounded-xl border-border-subtle hover:bg-interactive-hover"
-                                >
-                                    <Download className="h-4 w-4 mr-1.5" />
-                                    {dict.settings.download}
                                 </Button>
                             </div>
-                        </SettingItem>
+                            {error && (
-                    </div>
+                                <p className="text-xs text-destructive">
-                </div>
+                                    {error}
+                                </p>
+                            )}
+                        </div>
+                    )}
 
-                {/* Footer */}
+                    {/* Language */}
-                <div className="px-6 py-4 border-t border-border-subtle bg-surface-1/50 rounded-b-2xl">
+                    <SettingItem
-                    <p className="text-xs text-muted-foreground text-center">
+                        label={dict.settings.language}
-                        Version {process.env.APP_VERSION}
+                        description={dict.settings.languageDescription}
-                    </p>
+                    >
+                        <Select
+                            value={currentLang}
+                            onValueChange={changeLanguage}
+                        >
+                            <SelectTrigger
+                                id="language-select"
+                                className="w-[120px] h-9 rounded-xl"
+                            >
+                                <SelectValue />
+                            </SelectTrigger>
+                            <SelectContent>
+                                {i18n.locales.map((locale) => (
+                                    <SelectItem key={locale} value={locale}>
+                                        {LANGUAGE_LABELS[locale]}
+                                    </SelectItem>
+                                ))}
+                            </SelectContent>
+                        </Select>
+                    </SettingItem>
+
+                    {/* Theme */}
+                    <SettingItem
+                        label={dict.settings.theme}
+                        description={dict.settings.themeDescription}
+                    >
+                        <Button
+                            id="theme-toggle"
+                            variant="outline"
+                            size="icon"
+                            onClick={onToggleDarkMode}
+                            className="h-9 w-9 rounded-xl border-border-subtle hover:bg-interactive-hover"
+                        >
+                            {darkMode ? (
+                                <Sun className="h-4 w-4" />
+                            ) : (
+                                <Moon className="h-4 w-4" />
+                            )}
+                        </Button>
+                    </SettingItem>
+
+                    {/* Draw.io Style */}
+                    <SettingItem
+                        label={dict.settings.drawioStyle}
+                        description={`${dict.settings.drawioStyleDescription} ${
+                            drawioUi === "min"
+                                ? dict.settings.minimal
+                                : dict.settings.sketch
+                        }`}
+                    >
+                        <Button
+                            id="drawio-ui"
+                            variant="outline"
+                            onClick={onToggleDrawioUi}
+                            className="h-9 w-[120px] rounded-xl border-border-subtle hover:bg-interactive-hover font-normal"
+                        >
+                            {dict.settings.switchTo}{" "}
+                            {drawioUi === "min"
+                                ? dict.settings.sketch
+                                : dict.settings.minimal}
+                        </Button>
+                    </SettingItem>
+
+                    {/* Close Protection */}
+                    <SettingItem
+                        label={dict.settings.closeProtection}
+                        description={dict.settings.closeProtectionDescription}
+                    >
+                        <Switch
+                            id="close-protection"
+                            checked={closeProtection}
+                            onCheckedChange={(checked) => {
+                                setCloseProtection(checked)
+                                localStorage.setItem(
+                                    STORAGE_CLOSE_PROTECTION_KEY,
+                                    checked.toString(),
+                                )
+                                onCloseProtectionChange?.(checked)
+                            }}
+                        />
+                    </SettingItem>
                 </div>
-            </DialogContent>
+            </div>
-            ;(
+
-            <HistoryDialog
+            {/* Footer */}
-                showHistory={showHistory}
+            <div className="px-6 py-4 border-t border-border-subtle bg-surface-1/50 rounded-b-2xl">
-                onToggleHistory={setShowHistory}
+                <p className="text-xs text-muted-foreground text-center">
-            />
+                    Version {process.env.APP_VERSION}
-            )
+                </p>
-            <SaveDialog
+            </div>
-                open={showSaveDialog}
+        </DialogContent>
-                onOpenChange={setShowSaveDialog}
-                onSave={handleDiagramSave}
-                defaultFilename={`diagram-${new Date()
-                    .toISOString()
-                    .slice(0, 10)}
-`}
-            />
-        </>
     )
 }
 

docs/Cloudflare_Deploy.md

@@ -1,267 +0,0 @@
-# Deploy on Cloudflare Workers
-
-This project can be deployed as a **Cloudflare Worker** using the **OpenNext adapter**, giving you:
-
-- Global edge deployment
-- Very low latency
-- Free `workers.dev` hosting
-- Full Next.js ISR support via R2 (optional)
-
-> **Important Windows Note:** OpenNext and Wrangler are **not fully reliable on native Windows**. Recommended options:
->
-> - Use **GitHub Codespaces** (works perfectly)
-> - OR use **WSL (Linux)**
->
-> Pure Windows builds may fail due to WASM file path issues.
-
----
-
-## Prerequisites
-
-1. A **Cloudflare account** (free tier works for basic deployment)
-2. **Node.js 18+**
-3. **Wrangler CLI** installed (dev dependency is fine):
-
-```bash
-npm install -D wrangler
-```
-
-4. Cloudflare login:
-
-```bash
-npx wrangler login
-```
-
-> **Note:** A payment method is only required if you want to enable R2 for ISR caching. Basic Workers deployment is free.
-
----
-
-## Step 1 — Install dependencies
-
-```bash
-npm install
-```
-
----
-
-## Step 2 — Configure environment variables
-
-Cloudflare uses a different file for local testing.
-
-### 1) Create `.dev.vars` (for Cloudflare local + deploy)
-
-```bash
-cp env.example .dev.vars
-```
-
-Fill in your API keys and configuration.
-
-### 2) Make sure `.env.local` also exists (for regular Next.js dev)
-
-```bash
-cp env.example .env.local
-```
-
-Fill in the same values there.
-
----
-
-## Step 3 — Choose your deployment type
-
-### Option A: Deploy WITHOUT R2 (Simple, Free)
-
-If you don't need ISR caching, you can deploy without R2:
-
-**1. Use simple `open-next.config.ts`:**
-
-```ts
-import { defineCloudflareConfig } from "@opennextjs/cloudflare/config"
-
-export default defineCloudflareConfig({})
-```
-
-**2. Use simple `wrangler.jsonc` (without r2_buckets):**
-
-```jsonc
-{
-  "$schema": "node_modules/wrangler/config-schema.json",
-  "main": ".open-next/worker.js",
-  "name": "next-ai-draw-io-worker",
-  "compatibility_date": "2025-12-08",
-  "compatibility_flags": ["nodejs_compat", "global_fetch_strictly_public"],
-  "assets": {
-    "directory": ".open-next/assets",
-    "binding": "ASSETS"
-  },
-  "services": [
-    {
-      "binding": "WORKER_SELF_REFERENCE",
-      "service": "next-ai-draw-io-worker"
-    }
-  ]
-}
-```
-
-Skip to **Step 4**.
-
----
-
-### Option B: Deploy WITH R2 (Full ISR Support)
-
-R2 enables **Incremental Static Regeneration (ISR)** caching. Requires a payment method on your Cloudflare account.
-
-**1. Create an R2 bucket** in the Cloudflare Dashboard:
-
-- Go to **Storage & Databases → R2**
-- Click **Create bucket**
-- Name it: `next-inc-cache`
-
-**2. Configure `open-next.config.ts`:**
-
-```ts
-import { defineCloudflareConfig } from "@opennextjs/cloudflare/config"
-import r2IncrementalCache from "@opennextjs/cloudflare/overrides/incremental-cache/r2-incremental-cache"
-
-export default defineCloudflareConfig({
-  incrementalCache: r2IncrementalCache,
-})
-```
-
-**3. Configure `wrangler.jsonc` (with R2):**
-
-```jsonc
-{
-  "$schema": "node_modules/wrangler/config-schema.json",
-  "main": ".open-next/worker.js",
-  "name": "next-ai-draw-io-worker",
-  "compatibility_date": "2025-12-08",
-  "compatibility_flags": ["nodejs_compat", "global_fetch_strictly_public"],
-  "assets": {
-    "directory": ".open-next/assets",
-    "binding": "ASSETS"
-  },
-  "r2_buckets": [
-    {
-      "binding": "NEXT_INC_CACHE_R2_BUCKET",
-      "bucket_name": "next-inc-cache"
-    }
-  ],
-  "services": [
-    {
-      "binding": "WORKER_SELF_REFERENCE",
-      "service": "next-ai-draw-io-worker"
-    }
-  ]
-}
-```
-
-> **Important:** The `bucket_name` must exactly match the name you created in the Cloudflare dashboard.
-
----
-
-## Step 4 — Register a workers.dev subdomain (first-time only)
-
-Before your first deployment, you need a workers.dev subdomain.
-
-**Option 1: Via Cloudflare Dashboard (Recommended)**
-
-Visit: https://dash.cloudflare.com → Workers & Pages → Overview → Set up a subdomain
-
-**Option 2: During deploy**
-
-When you run `npm run deploy`, Wrangler may prompt:
-
-```
-Would you like to register a workers.dev subdomain? (Y/n)
-```
-
-Type `Y` and choose a subdomain name.
-
-> **Note:** In CI/CD or non-interactive environments, the prompt won't appear. Register via the dashboard first.
-
----
-
-## Step 5 — Deploy to Cloudflare
-
-```bash
-npm run deploy
-```
-
-What the script does:
-
-- Builds the Next.js app
-- Converts it to a Cloudflare Worker via OpenNext
-- Uploads static assets
-- Publishes the Worker
-
-Your app will be available at:
-
-```
-https://<worker-name>.<your-subdomain>.workers.dev
-```
-
----
-
-## Common issues & fixes
-
-### `You need to register a workers.dev subdomain`
-
-**Cause:** No workers.dev subdomain registered for your account.
-
-**Fix:** Go to https://dash.cloudflare.com → Workers & Pages → Set up a subdomain.
-
----
-
-### `Please enable R2 through the Cloudflare Dashboard`
-
-**Cause:** R2 is configured in wrangler.jsonc but not enabled on your account.
-
-**Fix:** Either enable R2 (requires payment method) or use Option A (deploy without R2).
-
----
-
-### `No R2 binding "NEXT_INC_CACHE_R2_BUCKET" found`
-
-**Cause:** `r2_buckets` is missing from `wrangler.jsonc`.
-
-**Fix:** Add the `r2_buckets` section or switch to Option A (without R2).
-
----
-
-### `Can't set compatibility date in the future`
-
-**Cause:** `compatibility_date` in wrangler config is set to a future date.
-
-**Fix:** Change `compatibility_date` to today or an earlier date.
-
----
-
-### Windows error: `resvg.wasm?module` (ENOENT)
-
-**Cause:** Windows filenames cannot include `?`, but a wasm asset uses `?module` in its filename.
-
-**Fix:** Build/deploy on Linux (WSL, Codespaces, or CI).
-
----
-
-## Optional: Preview locally
-
-Preview the Worker locally before deploying:
-
-```bash
-npm run preview
-```
-
----
-
-## Summary
-
-| Feature | Without R2 | With R2 |
-|---------|------------|---------|
-| Cost | Free | Requires payment method |
-| ISR Caching | No | Yes |
-| Static Pages | Yes | Yes |
-| API Routes | Yes | Yes |
-| Setup Complexity | Simple | Moderate |
-
-Choose **without R2** for testing or simple apps. Choose **with R2** for production apps that need ISR caching.

docs/offline-deployment.md

@@ -33,7 +33,7 @@ services:
 | Scenario | URL Value |
 |----------|-----------|
 | Localhost | `http://localhost:8080` |
-| Remote/Server | `http://YOUR_SERVER_IP:8080` |
+| Remote/Server | `http://YOUR_SERVER_IP:8080` or `https://drawio.your-domain.com` |
 
 **Do NOT use** internal Docker aliases like `http://drawio:8080`; the browser cannot resolve them.
 

docs/shape-libraries/alibaba_cloud.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.alibaba_cloud.{shape};fillColor=#FF6A00;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.alibaba_cloud.{shape};fillColor=#FF6A00;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/atlassian.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="image;aspect=fixed;image=img/lib/atlassian/Jira_Logo.svg;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="image;aspect=fixed;image=img/lib/atlassian/Jira_Logo.svg;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/aws4.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.aws4.resourceIcon;resIcon=mxgraph.aws4.{shape};fillColor=#ED7100;strokeColor=#ffffff;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.aws4.resourceIcon;resIcon=mxgraph.aws4.{shape};fillColor=#ED7100;strokeColor=#ffffff;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/azure2.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="image;aspect=fixed;image=img/lib/azure2/compute/Virtual_Machine.svg;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="image;aspect=fixed;image=img/lib/azure2/compute/Virtual_Machine.svg;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/cisco19.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.cisco19.rect;prIcon={shape};fillColor=#00bceb;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.cisco19.rect;prIcon={shape};fillColor=#00bceb;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/citrix.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.citrix.{shape};fillColor=#00A4E4;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.citrix.{shape};fillColor=#00A4E4;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/gcp2.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.gcp2.{shape};fillColor=#4285F4;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.gcp2.{shape};fillColor=#4285F4;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/kubernetes.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.kubernetes.icon;prIcon={shape};fillColor=#326CE5;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.kubernetes.icon;prIcon={shape};fillColor=#326CE5;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/mscae.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.mscae.cloud.azure;fillColor=#0078D4;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.mscae.cloud.azure;fillColor=#0078D4;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/network.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.networks.server;fillColor=#29AAE1;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.networks.server;fillColor=#29AAE1;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/openstack.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.openstack.{shape};fillColor=#3F51B5;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.openstack.{shape};fillColor=#3F51B5;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/salesforce.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.salesforce.analytics;fillColor=#7f8de1;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.salesforce.analytics;fillColor=#7f8de1;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/sap.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="image;aspect=fixed;image=img/lib/sap/SAP_Logo.svg;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="image;aspect=fixed;image=img/lib/sap/SAP_Logo.svg;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/vvd.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.vvd.{shape};fillColor=#00AEEF;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.vvd.{shape};fillColor=#00AEEF;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

docs/shape-libraries/webicons.md

@@ -6,7 +6,7 @@
 ## Usage
 
 ```xml
-<mxCell value="label" style="shape=mxgraph.webicons.{shape};fillColor=#3b5998;strokeColor=none;verticalLabelPosition=bottom;verticalAlign=top;align=center;" vertex="1" parent="1">
+<mxCell value="label" style="shape=mxgraph.webicons.{shape};fillColor=#3b5998;strokeColor=none;" vertex="1" parent="1">
   <mxGeometry x="0" y="0" width="60" height="60" as="geometry" />
 </mxCell>
 ```

hooks/use-model-config.ts

@@ -109,11 +109,9 @@ export interface UseModelConfigReturn {
     models: FlattenedModel[]
     selectedModel: FlattenedModel | undefined
     selectedModelId: string | undefined
-    showUnvalidatedModels: boolean
 
     // Actions
     setSelectedModelId: (modelId: string | undefined) => void
-    setShowUnvalidatedModels: (show: boolean) => void
     addProvider: (provider: ProviderName) => ProviderConfig
     updateProvider: (
         providerId: string,
@@ -162,13 +160,6 @@ export function useModelConfig(): UseModelConfigReturn {
         }))
     }, [])
 
-    const setShowUnvalidatedModels = useCallback((show: boolean) => {
-        setConfig((prev) => ({
-            ...prev,
-            showUnvalidatedModels: show,
-        }))
-    }, [])
-
     const addProvider = useCallback(
         (provider: ProviderName): ProviderConfig => {
             const newProvider = createProviderConfig(provider)
@@ -287,9 +278,7 @@ export function useModelConfig(): UseModelConfigReturn {
         models,
         selectedModel,
         selectedModelId: config.selectedModelId,
-        showUnvalidatedModels: config.showUnvalidatedModels ?? false,
         setSelectedModelId,
-        setShowUnvalidatedModels,
         addProvider,
         updateProvider,
         deleteProvider,

lib/dynamo-quota-manager.ts

@@ -27,7 +27,6 @@ try {
 
 /**
  * Get today's date string in the configured timezone (YYYY-MM-DD format)
- * This is used as the Sort Key (SK) for per-day tracking
  */
 function getTodayInTimezone(): string {
     return new Intl.DateTimeFormat("en-CA", {
@@ -62,8 +61,8 @@ interface QuotaCheckResult {
 
 /**
  * Check all quotas and increment request count atomically.
- * Uses composite key (PK=user, SK=date) for per-day tracking.
+ * Uses ConditionExpression to prevent race conditions.
- * Each day automatically gets a new item - no explicit reset needed.
+ * Returns which limit was exceeded if any.
  */
 export async function checkAndIncrementRequest(
     ip: string,
@@ -74,33 +73,77 @@ export async function checkAndIncrementRequest(
         return { allowed: true }
     }
 
-    const pk = ip // User identifier (base64 IP)
+    const today = getTodayInTimezone()
-    const sk = getTodayInTimezone() // Date as sort key (YYYY-MM-DD)
     const currentMinute = Math.floor(Date.now() / 60000).toString()
+    const ttl = Math.floor(Date.now() / 1000) + 7 * 24 * 60 * 60
 
     try {
-        // Single atomic update - handles creation AND increment
+        // First, try to reset counts if it's a new day (atomic day reset)
-        // New day automatically creates new item (different SK)
+        // This will succeed only if lastResetDate < today or doesn't exist
-        // Note: lastMinute/tpmCount are managed by recordTokenUsage only
+        try {
+            await client.send(
+                new UpdateItemCommand({
+                    TableName: TABLE,
+                    Key: { PK: { S: `IP#${ip}` } },
+                    // Reset all counts to 1/0 for the new day
+                    UpdateExpression: `
+                        SET lastResetDate = :today,
+                            dailyReqCount = :one,
+                            dailyTokenCount = :zero,
+                            lastMinute = :minute,
+                            tpmCount = :zero,
+                            #ttl = :ttl
+                    `,
+                    // Only succeed if it's a new day (or new item)
+                    ConditionExpression: `
+                        attribute_not_exists(lastResetDate) OR lastResetDate < :today
+                    `,
+                    ExpressionAttributeNames: { "#ttl": "ttl" },
+                    ExpressionAttributeValues: {
+                        ":today": { S: today },
+                        ":zero": { N: "0" },
+                        ":one": { N: "1" },
+                        ":minute": { S: currentMinute },
+                        ":ttl": { N: String(ttl) },
+                    },
+                }),
+            )
+            // New day reset successful
+            return { allowed: true }
+        } catch (resetError: any) {
+            // If condition failed, it's the same day - continue to increment logic
+            if (!(resetError instanceof ConditionalCheckFailedException)) {
+                throw resetError // Re-throw unexpected errors
+            }
+        }
+
+        // Same day - increment request count with limit checks
         await client.send(
             new UpdateItemCommand({
                 TableName: TABLE,
-                Key: {
+                Key: { PK: { S: `IP#${ip}` } },
-                    PK: { S: pk },
+                // Increment request count, handle minute boundary for TPM
-                    SK: { S: sk },
+                UpdateExpression: `
-                },
+                    SET lastMinute = :minute,
-                UpdateExpression: "ADD reqCount :one",
+                        tpmCount = if_not_exists(tpmCount, :zero),
+                        #ttl = :ttl
+                    ADD dailyReqCount :one
+                `,
                 // Check all limits before allowing increment
-                // TPM check: allow if new minute OR under limit
                 ConditionExpression: `
-                    (attribute_not_exists(reqCount) OR reqCount < :reqLimit) AND
+                    lastResetDate = :today AND
-                    (attribute_not_exists(tokenCount) OR tokenCount < :tokenLimit) AND
+                    (attribute_not_exists(dailyReqCount) OR dailyReqCount < :reqLimit) AND
+                    (attribute_not_exists(dailyTokenCount) OR dailyTokenCount < :tokenLimit) AND
                     (attribute_not_exists(lastMinute) OR lastMinute <> :minute OR
                      attribute_not_exists(tpmCount) OR tpmCount < :tpmLimit)
                 `,
+                ExpressionAttributeNames: { "#ttl": "ttl" },
                 ExpressionAttributeValues: {
+                    ":today": { S: today },
+                    ":zero": { N: "0" },
                     ":one": { N: "1" },
                     ":minute": { S: currentMinute },
+                    ":ttl": { N: String(ttl) },
                     ":reqLimit": { N: String(limits.requests || 999999) },
                     ":tokenLimit": { N: String(limits.tokens || 999999) },
                     ":tpmLimit": { N: String(limits.tpm || 999999) },
@@ -117,39 +160,42 @@ export async function checkAndIncrementRequest(
                 const getResult = await client.send(
                     new GetItemCommand({
                         TableName: TABLE,
-                        Key: {
+                        Key: { PK: { S: `IP#${ip}` } },
-                            PK: { S: pk },
-                            SK: { S: sk },
-                        },
                     }),
                 )
 
                 const item = getResult.Item
+                const storedDate = item?.lastResetDate?.S
                 const storedMinute = item?.lastMinute?.S
+                const isNewDay = !storedDate || storedDate < today
 
-                const reqCount = Number(item?.reqCount?.N || 0)
+                const dailyReqCount = isNewDay
-                const tokenCount = Number(item?.tokenCount?.N || 0)
+                    ? 0
+                    : Number(item?.dailyReqCount?.N || 0)
+                const dailyTokenCount = isNewDay
+                    ? 0
+                    : Number(item?.dailyTokenCount?.N || 0)
                 const tpmCount =
                     storedMinute !== currentMinute
                         ? 0
                         : Number(item?.tpmCount?.N || 0)
 
                 // Determine which limit was exceeded
-                if (limits.requests > 0 && reqCount >= limits.requests) {
+                if (limits.requests > 0 && dailyReqCount >= limits.requests) {
                     return {
                         allowed: false,
                         type: "request",
                         error: "Daily request limit exceeded",
-                        used: reqCount,
+                        used: dailyReqCount,
                         limit: limits.requests,
                     }
                 }
-                if (limits.tokens > 0 && tokenCount >= limits.tokens) {
+                if (limits.tokens > 0 && dailyTokenCount >= limits.tokens) {
                     return {
                         allowed: false,
                         type: "token",
                         error: "Daily token limit exceeded",
-                        used: tokenCount,
+                        used: dailyTokenCount,
                         limit: limits.tokens,
                     }
                 }
@@ -164,7 +210,7 @@ export async function checkAndIncrementRequest(
                 }
 
                 // Condition failed but no limit clearly exceeded - race condition edge case
-                // Fail safe by allowing (could be a TPM reset race)
+                // Fail safe by allowing (could be a reset race)
                 console.warn(
                     `[quota] Condition failed but no limit exceeded for IP prefix: ${ip.slice(0, 8)}...`,
                 )
@@ -187,7 +233,7 @@ export async function checkAndIncrementRequest(
 
 /**
  * Record token usage after response completes.
- * Uses composite key (PK=user, SK=date) for per-day tracking.
+ * Uses atomic operations to update both daily token count and TPM count.
  * Handles minute boundaries atomically to prevent race conditions.
  */
 export async function recordTokenUsage(
@@ -198,27 +244,24 @@ export async function recordTokenUsage(
     if (!client || !TABLE) return
     if (!Number.isFinite(tokens) || tokens <= 0) return
 
-    const pk = ip // User identifier (base64 IP)
-    const sk = getTodayInTimezone() // Date as sort key (YYYY-MM-DD)
     const currentMinute = Math.floor(Date.now() / 60000).toString()
+    const ttl = Math.floor(Date.now() / 1000) + 7 * 24 * 60 * 60
 
     try {
-        // Try to update for same minute OR new item (most common cases)
+        // Try to update assuming same minute (most common case)
-        // Handles: 1) new item (no lastMinute), 2) same minute (lastMinute matches)
+        // Uses condition to ensure we're in the same minute
         await client.send(
             new UpdateItemCommand({
                 TableName: TABLE,
-                Key: {
+                Key: { PK: { S: `IP#${ip}` } },
-                    PK: { S: pk },
-                    SK: { S: sk },
-                },
                 UpdateExpression:
-                    "SET lastMinute = if_not_exists(lastMinute, :minute) ADD tokenCount :tokens, tpmCount :tokens",
+                    "SET #ttl = :ttl ADD dailyTokenCount :tokens, tpmCount :tokens",
-                ConditionExpression:
+                ConditionExpression: "lastMinute = :minute",
-                    "attribute_not_exists(lastMinute) OR lastMinute = :minute",
+                ExpressionAttributeNames: { "#ttl": "ttl" },
                 ExpressionAttributeValues: {
                     ":minute": { S: currentMinute },
                     ":tokens": { N: String(tokens) },
+                    ":ttl": { N: String(ttl) },
                 },
             }),
         )
@@ -229,15 +272,14 @@ export async function recordTokenUsage(
                 await client.send(
                     new UpdateItemCommand({
                         TableName: TABLE,
-                        Key: {
+                        Key: { PK: { S: `IP#${ip}` } },
-                            PK: { S: pk },
-                            SK: { S: sk },
-                        },
                         UpdateExpression:
-                            "SET lastMinute = :minute, tpmCount = :tokens ADD tokenCount :tokens",
+                            "SET lastMinute = :minute, tpmCount = :tokens, #ttl = :ttl ADD dailyTokenCount :tokens",
+                        ExpressionAttributeNames: { "#ttl": "ttl" },
                         ExpressionAttributeValues: {
                             ":minute": { S: currentMinute },
                             ":tokens": { N: String(tokens) },
+                            ":ttl": { N: String(ttl) },
                         },
                     }),
                 )

lib/i18n/dictionaries/en.json

@@ -98,11 +98,7 @@
         "minimal": "Minimal",
         "sketch": "Sketch",
         "closeProtection": "Close Protection",
-        "closeProtectionDescription": "Show confirmation when leaving the page.",
+        "closeProtectionDescription": "Show confirmation when leaving the page."
-        "diagramActions": "Diagram Actions",
-        "diagramActionsDescription": "Manage diagram history and exports",
-        "history": "History",
-        "download": "Download"
     },
     "save": {
         "title": "Save Diagram",
@@ -247,9 +243,6 @@
         "default": "Default",
         "serverDefault": "Server Default",
         "configureModels": "Configure Models...",
-        "onlyVerifiedShown": "Only verified models are shown",
+        "onlyVerifiedShown": "Only verified models are shown"
-        "showUnvalidatedModels": "Show unvalidated models",
-        "allModelsShown": "All models are shown (including unvalidated)",
-        "unvalidatedModelWarning": "This model has not been validated"
     }
 }

lib/i18n/dictionaries/ja.json

@@ -98,11 +98,7 @@
         "minimal": "ミニマル",
         "sketch": "スケッチ",
         "closeProtection": "ページ離脱確認",
-        "closeProtectionDescription": "ページを離れる際に確認を表示します。",
+        "closeProtectionDescription": "ページを離れる際に確認を表示します。"
-        "diagramActions": "ダイアグラム操作",
-        "diagramActionsDescription": "ダイアグラムの履歴とエクスポートを管理",
-        "history": "履歴",
-        "download": "ダウンロード"
     },
     "save": {
         "title": "ダイアグラムを保存",
@@ -247,9 +243,6 @@
         "default": "デフォルト",
         "serverDefault": "サーバーデフォルト",
         "configureModels": "モデルを設定...",
-        "onlyVerifiedShown": "検証済みのモデルのみ表示",
+        "onlyVerifiedShown": "検証済みのモデルのみ表示"
-        "showUnvalidatedModels": "未検証のモデルを表示",
-        "allModelsShown": "すべてのモデルを表示（未検証を含む）",
-        "unvalidatedModelWarning": "このモデルは検証されていません"
     }
 }

lib/i18n/dictionaries/zh.json

@@ -98,11 +98,7 @@
         "minimal": "简约",
         "sketch": "草图",
         "closeProtection": "关闭确认",
-        "closeProtectionDescription": "离开页面时显示确认。",
+        "closeProtectionDescription": "离开页面时显示确认。"
-        "diagramActions": "图表操作",
-        "diagramActionsDescription": "管理图表历史记录和导出",
-        "history": "历史记录",
-        "download": "下载"
     },
     "save": {
         "title": "保存图表",
@@ -247,9 +243,6 @@
         "default": "默认",
         "serverDefault": "服务器默认",
         "configureModels": "配置模型...",
-        "onlyVerifiedShown": "仅显示已验证的模型",
+        "onlyVerifiedShown": "仅显示已验证的模型"
-        "showUnvalidatedModels": "显示未验证的模型",
-        "allModelsShown": "显示所有模型（包括未验证的）",
-        "unvalidatedModelWarning": "此模型尚未验证"
     }
 }

lib/types/model-config.ts

@@ -40,7 +40,6 @@ export interface MultiModelConfig {
     version: 1
     providers: ProviderConfig[]
     selectedModelId?: string // Currently selected model's UUID
-    showUnvalidatedModels?: boolean // Show models that haven't been validated
 }
 
 // Flattened model for dropdown display

next.config.ts

@@ -17,13 +17,3 @@ const nextConfig: NextConfig = {
 }
 
 export default nextConfig
-
-// Initialize OpenNext Cloudflare for local development only
-// This must be a dynamic import to avoid loading workerd binary during builds
-if (process.env.NODE_ENV === "development") {
-    import("@opennextjs/cloudflare").then(
-        ({ initOpenNextCloudflareForDev }) => {
-            initOpenNextCloudflareForDev()
-        },
-    )
-}

open-next.config.ts

@@ -1,7 +0,0 @@
-// default open-next.config.ts file created by @opennextjs/cloudflare
-import { defineCloudflareConfig } from "@opennextjs/cloudflare/config"
-import r2IncrementalCache from "@opennextjs/cloudflare/overrides/incremental-cache/r2-incremental-cache"
-
-export default defineCloudflareConfig({
-    incrementalCache: r2IncrementalCache,
-})

package.json

@@ -12,10 +12,6 @@
         "format": "biome check --write .",
         "check": "biome ci",
         "prepare": "husky",
-        "preview": "opennextjs-cloudflare build && opennextjs-cloudflare preview",
-        "deploy": "opennextjs-cloudflare build && opennextjs-cloudflare deploy",
-        "upload": "opennextjs-cloudflare build && opennextjs-cloudflare upload",
-        "cf-typegen": "wrangler types --env-interface CloudflareEnv cloudflare-env.d.ts",
         "electron:dev": "node scripts/electron-dev.mjs",
         "electron:build": "npm run build && npm run electron:compile",
         "electron:compile": "npx esbuild electron/main/index.ts electron/preload/index.ts electron/preload/settings.ts --bundle --platform=node --outdir=dist-electron --external:electron --sourcemap --packages=external && npx shx cp -r electron/settings dist-electron/",
@@ -43,7 +39,6 @@
         "@langfuse/otel": "^4.4.4",
         "@langfuse/tracing": "^4.4.9",
         "@next/third-parties": "^16.0.6",
-        "@opennextjs/cloudflare": "1.14.7",
         "@openrouter/ai-sdk-provider": "^1.5.4",
         "@opentelemetry/exporter-trace-otlp-http": "^0.208.0",
         "@opentelemetry/sdk-trace-node": "^2.2.0",
@@ -67,7 +62,7 @@
         "js-tiktoken": "^1.0.21",
         "jsdom": "^26.0.0",
         "jsonrepair": "^3.13.1",
-        "lucide-react": "^0.562.0",
+        "lucide-react": "^0.483.0",
         "motion": "^12.23.25",
         "negotiator": "^1.0.0",
         "next": "^16.0.7",
@@ -109,15 +104,14 @@
         "electron": "^39.2.7",
         "electron-builder": "^26.0.12",
         "esbuild": "^0.27.2",
-        "eslint": "9.39.2",
+        "eslint": "9.39.1",
-        "eslint-config-next": "16.1.1",
+        "eslint-config-next": "16.0.5",
         "husky": "^9.1.7",
         "lint-staged": "^16.2.7",
         "shx": "^0.4.0",
         "tailwindcss": "^4",
         "typescript": "^5",
-        "wait-on": "^9.0.3",
+        "wait-on": "^9.0.3"
-        "wrangler": "4.54.0"
     },
     "overrides": {
         "@openrouter/ai-sdk-provider": {

packages/mcp-server/package-lock.json

@@ -1,12 +1,12 @@
 {
     "name": "@next-ai-drawio/mcp-server",
-    "version": "0.1.6",
+    "version": "0.1.5",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@next-ai-drawio/mcp-server",
-            "version": "0.1.6",
+            "version": "0.1.5",
             "license": "Apache-2.0",
             "dependencies": {
                 "@modelcontextprotocol/sdk": "^1.0.4",
@@ -481,9 +481,9 @@
             }
         },
         "node_modules/@modelcontextprotocol/sdk": {
-            "version": "1.25.1",
+            "version": "1.25.0",
-            "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.25.1.tgz",
+            "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.25.0.tgz",
-            "integrity": "sha512-yO28oVFFC7EBoiKdAn+VqRm+plcfv4v0xp6osG/VsCB0NlPZWi87ajbCZZ8f/RvOFLEu7//rSRmuZZ7lMoe3gQ==",
+            "integrity": "sha512-z0Zhn/LmQ3yz91dEfd5QgS7DpSjA4pk+3z2++zKgn5L6iDFM9QapsVoAQSbKLvlrFsZk9+ru6yHHWNq2lCYJKQ==",
             "license": "MIT",
             "dependencies": {
                 "@hono/node-server": "^1.19.7",
@@ -1034,7 +1034,6 @@
             "resolved": "https://registry.npmjs.org/express/-/express-5.2.1.tgz",
             "integrity": "sha512-hIS4idWWai69NezIdRt2xFVofaF4j+6INOpJlVOLDO8zXGpUVEVzIYk12UUi2JzjEzWL3IOAxcTubgz9Po0yXw==",
             "license": "MIT",
-            "peer": true,
             "dependencies": {
                 "accepts": "^2.0.0",
                 "body-parser": "^2.2.1",
@@ -2028,7 +2027,6 @@
             "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
             "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
             "license": "MIT",
-            "peer": true,
             "funding": {
                 "url": "https://github.com/sponsors/colinhacks"
             }

public/_headers

@@ -1,2 +0,0 @@
-/_next/static/*
-  Cache-Control: public,max-age=31536000,immutable

public/favicon-white.svg

@@ -1,37 +0,0 @@
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-<g transform="translate(0.000000,1536.000000) scale(0.100000,-0.100000)"
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-</svg>

wrangler.jsonc

@@ -1,23 +0,0 @@
-{
-    "$schema": "node_modules/wrangler/config-schema.json",
-    "main": ".open-next/worker.js",
-    "name": "next-ai-draw-io-worker",
-    "compatibility_date": "2025-12-08", // must be a today or past compatibility_date
-    "compatibility_flags": ["nodejs_compat", "global_fetch_strictly_public"],
-    "assets": {
-        "directory": ".open-next/assets",
-        "binding": "ASSETS"
-    },
-    "r2_buckets": [
-        {
-            "binding": "NEXT_INC_CACHE_R2_BUCKET",
-            "bucket_name": "next-inc-cache"
-        }
-    ],
-    "services": [
-        {
-            "binding": "WORKER_SELF_REFERENCE",
-            "service": "next-ai-draw-io-worker"
-        }
-    ]
-}