fix: recover IDB on closing and restore diagram

2026-09-02 01:20:23 +08:00 · 2026-01-27 12:43:09 +09:00
38 changed files with 633 additions and 1010 deletions
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ English | [中文](./docs/cn/README_CN.md) | [日本語](./docs/ja/README_JA.md)

 A Next.js web application that integrates AI capabilities with draw.io diagrams. Create, modify, and enhance diagrams through natural language commands and AI-assisted visualization.

-> Note: Thanks to <img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) sponsorship, the demo site now uses the powerful K2-thinking model!
+> Note: Thanks to <img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) sponsorship, the demo site now uses the powerful K2-thinking model!


 https://github.com/user-attachments/assets/9d60a3e8-4a1c-4b5e-acbb-26af2d3eabd1
@@ -202,7 +202,7 @@ See the [Next.js deployment documentation](https://nextjs.org/docs/app/building-

 ## Multi-Provider Support

-   [ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
+-   [ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
 -   AWS Bedrock (default)
 -   OpenAI
 -   Anthropic
@@ -244,7 +244,7 @@ Diagrams are represented as XML that can be rendered in draw.io. The AI processe

 ## Support & Contact

-**Special thanks to [ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) for sponsoring the API token usage of the demo site!** Register on the ARK platform to get 500K free tokens for all models!
+**Special thanks to [ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) for sponsoring the API token usage of the demo site!** Register on the ARK platform to get 500K free tokens for all models!

 If you find this project useful, please consider [sponsoring](https://github.com/sponsors/DayuanJiang) to help me host the live demo site!

--- a/app/[lang]/about/cn/page.tsx
+++ b/app/[lang]/about/cn/page.tsx
@@ -1,7 +1,7 @@
 import type { Metadata } from "next"
+import Image from "next/image"
 import Link from "next/link"
 import { FaGithub } from "react-icons/fa"
-import Image from "@/components/image-with-basepath"

 export const metadata: Metadata = {
    title: "关于 - Next AI Draw.io",
@@ -78,7 +78,7 @@ export default function AboutCN() {
                                <p>
                                    好消息！感谢{" "}
                                    <a
-                                        href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                        href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                        target="_blank"
                                        rel="noopener noreferrer"
                                        className="font-semibold text-blue-600 hover:underline"
@@ -277,7 +277,7 @@ export default function AboutCN() {
                    <ul className="list-disc pl-6 text-gray-700 space-y-1">
                        <li>
                            <a
-                                href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                target="_blank"
                                rel="noopener noreferrer"
                                className="text-blue-600 hover:underline"
@@ -312,7 +312,7 @@ export default function AboutCN() {
                    <p className="text-gray-700 mb-4 font-semibold">
                        特别感谢{" "}
                        <a
-                            href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                            href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="text-blue-600 hover:underline"
--- a/app/[lang]/about/ja/page.tsx
+++ b/app/[lang]/about/ja/page.tsx
@@ -1,7 +1,7 @@
 import type { Metadata } from "next"
+import Image from "next/image"
 import Link from "next/link"
 import { FaGithub } from "react-icons/fa"
-import Image from "@/components/image-with-basepath"

 export const metadata: Metadata = {
    title: "概要 - Next AI Draw.io",
@@ -86,7 +86,7 @@ export default function AboutJA() {
                                <p>
                                    朗報です！
                                    <a
-                                        href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                        href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                        target="_blank"
                                        rel="noopener noreferrer"
                                        className="font-semibold text-blue-600 hover:underline"
@@ -292,7 +292,7 @@ export default function AboutJA() {
                    <ul className="list-disc pl-6 text-gray-700 space-y-1">
                        <li>
                            <a
-                                href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                target="_blank"
                                rel="noopener noreferrer"
                                className="text-blue-600 hover:underline"
@@ -327,7 +327,7 @@ export default function AboutJA() {
                    <p className="text-gray-700 mb-4 font-semibold">
                        デモサイトのAPIトークン使用を支援してくださった{" "}
                        <a
-                            href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                            href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="text-blue-600 hover:underline"
--- a/app/[lang]/about/page.tsx
+++ b/app/[lang]/about/page.tsx
@@ -1,7 +1,7 @@
 import type { Metadata } from "next"
+import Image from "next/image"
 import Link from "next/link"
 import { FaGithub } from "react-icons/fa"
-import Image from "@/components/image-with-basepath"

 export const metadata: Metadata = {
    title: "About - Next AI Draw.io",
@@ -87,7 +87,7 @@ export default function About() {
                                    Great news! Thanks to the generous
                                    sponsorship from{" "}
                                    <a
-                                        href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                        href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                        target="_blank"
                                        rel="noopener noreferrer"
                                        className="font-semibold text-blue-600 hover:underline"
@@ -311,7 +311,7 @@ export default function About() {
                    <ul className="list-disc pl-6 text-gray-700 space-y-1">
                        <li>
                            <a
-                                href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                                href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                                target="_blank"
                                rel="noopener noreferrer"
                                className="text-blue-600 hover:underline"
@@ -348,7 +348,7 @@ export default function About() {
                    <p className="text-gray-700 mb-4 font-semibold">
                        Special thanks to{" "}
                        <a
-                            href="https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
+                            href="https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="text-blue-600 hover:underline"
--- a/app/[lang]/layout.tsx
+++ b/app/[lang]/layout.tsx
@@ -41,24 +41,19 @@ export async function generateMetadata({
    params: Promise<{ lang: string }>
 }): Promise<Metadata> {
    const { lang: rawLang } = await params
-    const lang = (
-        rawLang in { en: 1, zh: 1, ja: 1, "zh-Hant": 1 } ? rawLang : "en"
-    ) as Locale
+    const lang = (rawLang in { en: 1, zh: 1, ja: 1 } ? rawLang : "en") as Locale

    // Default to English metadata
    const titles: Record<Locale, string> = {
        en: "Next AI Draw.io - AI-Powered Diagram Generator",
        zh: "Next AI Draw.io - AI powered diagram generator",
        ja: "Next AI Draw.io - AI-powered diagram generator",
-        "zh-Hant": "Next AI Draw.io - AI 驅動的圖表產生器",
    }

    const descriptions: Record<Locale, string> = {
        en: "Create AWS architecture diagrams, flowcharts, and technical diagrams using AI. Free online tool integrating draw.io with AI assistance for professional diagram creation.",
        zh: "Use AI to create AWS architecture diagrams, flowcharts, and technical diagrams. Free online tool integrated with draw.io and AI assistance for professional diagram creation.",
        ja: "Create AWS architecture diagrams, flowcharts, and technical diagrams using AI. Create professional diagrams with a free online tool that integrates draw.io with an AI assistant.",
-        "zh-Hant":
-            "使用 AI 建立 AWS 架構圖、流程圖和技術圖表。免費線上工具整合 draw.io 與 AI 輔助，輕鬆建立專業圖表。",
    }

    return {
@@ -85,14 +80,7 @@ export async function generateMetadata({
            type: "website",
            url: "https://next-ai-drawio.jiang.jp",
            siteName: "Next AI Draw.io",
-            locale:
-                lang === "zh"
-                    ? "zh_CN"
-                    : lang === "zh-Hant"
-                      ? "zh_HK"
-                      : lang === "ja"
-                        ? "ja_JP"
-                        : "en_US",
+            locale: lang === "zh" ? "zh_CN" : lang === "ja" ? "ja_JP" : "en_US",
            images: [
                {
                    url: "/architecture.png",
@@ -127,7 +115,6 @@ export async function generateMetadata({
                en: "/en",
                zh: "/zh",
                ja: "/ja",
-                "zh-Hant": "/zh-Hant",
            },
        },
    }
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -449,7 +449,6 @@ ${userInputText}

    const result = streamText({
        model,
-        abortSignal: req.signal,
        ...(process.env.MAX_OUTPUT_TOKENS && {
            maxOutputTokens: parseInt(process.env.MAX_OUTPUT_TOKENS, 10),
        }),
--- a/components/chat-input.tsx
+++ b/components/chat-input.tsx
@@ -7,7 +7,6 @@ import {
    Link,
    Loader2,
    Send,
-    Square,
 } from "lucide-react"
 import type React from "react"
 import {
@@ -155,7 +154,6 @@ interface ChatInputProps {
    status: "submitted" | "streaming" | "ready" | "error"
    onSubmit: (e: React.FormEvent<HTMLFormElement>) => void
    onChange: (e: React.ChangeEvent<HTMLTextAreaElement>) => void
-    onStop?: () => void
    files?: File[]
    onFileChange?: (files: File[]) => void
    pdfData?: Map<
@@ -172,6 +170,7 @@ interface ChatInputProps {
    selectedModelId?: string
    onModelSelect?: (modelId: string | undefined) => void
    showUnvalidatedModels?: boolean
+    onConfigureModels?: () => void
    // Focus control props
    shouldFocus?: boolean
    onFocused?: () => void
@@ -184,7 +183,6 @@ export const ChatInput = forwardRef<ChatInputRef, ChatInputProps>(
            status,
            onSubmit,
            onChange,
-            onStop,
            files = [],
            onFileChange = () => {},
            pdfData = new Map(),
@@ -196,6 +194,7 @@ export const ChatInput = forwardRef<ChatInputRef, ChatInputProps>(
            selectedModelId,
            onModelSelect = () => {},
            showUnvalidatedModels = false,
+            onConfigureModels = () => {},
            shouldFocus = false,
            onFocused,
        },
@@ -551,34 +550,29 @@ export const ChatInput = forwardRef<ChatInputRef, ChatInputProps>(
                            models={models}
                            selectedModelId={selectedModelId}
                            onSelect={onModelSelect}
+                            onConfigure={onConfigureModels}
                            disabled={isDisabled}
                            showUnvalidatedModels={showUnvalidatedModels}
                        />
                        <div className="w-px h-5 bg-border mx-1" />
-                        {(status === "streaming" || status === "submitted") &&
-                        onStop ? (
-                            <Button
-                                type="button"
-                                onClick={onStop}
-                                size="sm"
-                                variant="destructive"
-                                className="h-8 w-8 p-0 rounded-xl shadow-sm"
-                                aria-label={dict.chat.stopGeneration}
-                            >
-                                <Square className="h-4 w-4" />
-                            </Button>
-                        ) : (
-                            <Button
-                                type="submit"
-                                disabled={isDisabled || !input.trim()}
-                                size="sm"
-                                className="h-8 px-4 rounded-xl font-medium shadow-sm"
-                                aria-label={dict.chat.send}
-                            >
-                                <Send className="h-4 w-4 mr-1.5" />
-                                {dict.chat.send}
-                            </Button>
-                        )}
+                        <Button
+                            type="submit"
+                            disabled={isDisabled || !input.trim()}
+                            size="sm"
+                            className="h-8 px-4 rounded-xl font-medium shadow-sm"
+                            aria-label={
+                                isDisabled ? dict.chat.sending : dict.chat.send
+                            }
+                        >
+                            {isDisabled ? (
+                                <Loader2 className="h-4 w-4 animate-spin" />
+                            ) : (
+                                <>
+                                    <Send className="h-4 w-4 mr-1.5" />
+                                    {dict.chat.send}
+                                </>
+                            )}
+                        </Button>
                    </div>
                </div>
                <HistoryDialog
--- a/components/chat-message-display.tsx
+++ b/components/chat-message-display.tsx
@@ -16,6 +16,7 @@ import {
    ThumbsUp,
    X,
 } from "lucide-react"
+import Image from "next/image"
 import type { MutableRefObject } from "react"
 import { useCallback, useEffect, useRef, useState } from "react"
 import ReactMarkdown from "react-markdown"
@@ -30,7 +31,6 @@ import { ToolCallCard } from "@/components/chat/ToolCallCard"
 import type { DiagramOperation, ToolPartLike } from "@/components/chat/types"
 import type { ValidationState } from "@/components/chat/ValidationCard"
 import { ValidationCard } from "@/components/chat/ValidationCard"
-import Image from "@/components/image-with-basepath"
 import { ScrollArea } from "@/components/ui/scroll-area"
 import { useDictionary } from "@/hooks/use-dictionary"
 import { getApiEndpoint } from "@/lib/base-path"
--- a/components/chat-panel.tsx
+++ b/components/chat-panel.tsx
@@ -8,7 +8,8 @@ import {
    PanelRightOpen,
    Settings,
 } from "lucide-react"
-import { usePathname, useRouter, useSearchParams } from "next/navigation"
+import Image from "next/image"
+import { useRouter, useSearchParams } from "next/navigation"
 import type React from "react"
 import {
    useCallback,
@@ -21,7 +22,6 @@ import { flushSync } from "react-dom"
 import { Toaster, toast } from "sonner"
 import { ButtonWithTooltip } from "@/components/button-with-tooltip"
 import { ChatInput } from "@/components/chat-input"
-import Image from "@/components/image-with-basepath"
 import { ModelConfigDialog } from "@/components/model-config-dialog"
 import { SettingsDialog } from "@/components/settings-dialog"
 import { useDiagram } from "@/contexts/diagram-context"
@@ -131,7 +131,6 @@ export default function ChatPanel({

    const dict = useDictionary()
    const router = useRouter()
-    const pathname = usePathname()
    const searchParams = useSearchParams()
    const urlSessionId = searchParams.get("session")

@@ -340,155 +339,151 @@ export default function ChatPanel({
        onValidationStateChange: handleValidationStateChange,
    })

-    const {
-        messages,
-        sendMessage,
-        addToolOutput,
-        status,
-        error,
-        setMessages,
-        stop,
-    } = useChat({
-        transport: new DefaultChatTransport({
-            api: getApiEndpoint("/api/chat"),
-        }),
-        onToolCall: async ({ toolCall }) => {
-            await handleToolCall({ toolCall }, addToolOutput)
-        },
-        onError: (error) => {
-            // Handle server-side quota limit (429 response)
-            // AI SDK puts the full response body in error.message for non-OK responses
-            try {
-                const data = JSON.parse(error.message)
-                if (data.type === "request") {
-                    quotaManager.showQuotaLimitToast(data.used, data.limit)
+    const { messages, sendMessage, addToolOutput, status, error, setMessages } =
+        useChat({
+            transport: new DefaultChatTransport({
+                api: getApiEndpoint("/api/chat"),
+            }),
+            onToolCall: async ({ toolCall }) => {
+                await handleToolCall({ toolCall }, addToolOutput)
+            },
+            onError: (error) => {
+                // Handle server-side quota limit (429 response)
+                // AI SDK puts the full response body in error.message for non-OK responses
+                try {
+                    const data = JSON.parse(error.message)
+                    if (data.type === "request") {
+                        quotaManager.showQuotaLimitToast(data.used, data.limit)
+                        return
+                    }
+                    if (data.type === "token") {
+                        quotaManager.showTokenLimitToast(data.used, data.limit)
+                        return
+                    }
+                    if (data.type === "tpm") {
+                        quotaManager.showTPMLimitToast(data.limit)
+                        return
+                    }
+                } catch {
+                    // Not JSON, fall through to string matching for backwards compatibility
+                }
+
+                // Fallback to string matching
+                if (error.message.includes("Daily request limit")) {
+                    quotaManager.showQuotaLimitToast()
                    return
                }
-                if (data.type === "token") {
-                    quotaManager.showTokenLimitToast(data.used, data.limit)
+                if (error.message.includes("Daily token limit")) {
+                    quotaManager.showTokenLimitToast()
                    return
                }
-                if (data.type === "tpm") {
-                    quotaManager.showTPMLimitToast(data.limit)
-                    return
-                }
-            } catch {
-                // Not JSON, fall through to string matching for backwards compatibility
-            }
-
-            // Fallback to string matching
-            if (error.message.includes("Daily request limit")) {
-                quotaManager.showQuotaLimitToast()
-                return
-            }
-            if (error.message.includes("Daily token limit")) {
-                quotaManager.showTokenLimitToast()
-                return
-            }
-            if (
-                error.message.includes("Rate limit exceeded") ||
-                error.message.includes("tokens per minute")
-            ) {
-                quotaManager.showTPMLimitToast()
-                return
-            }
-
-            // Silence access code error in console since it's handled by UI
-            if (!error.message.includes("Invalid or missing access code")) {
-                console.error("Chat error:", error)
-            }
-
-            // Translate technical errors into user-friendly messages
-            // The server now handles detailed error messages, so we can display them directly.
-            // But we still handle connection/network errors that happen before reaching the server.
-            let friendlyMessage = error.message
-
-            // Simple check for network errors if message is generic
-            if (friendlyMessage === "Failed to fetch") {
-                friendlyMessage = "Network error. Please check your connection."
-            }
-
-            // Truncated tool input error (model output limit too low)
-            if (friendlyMessage.includes("toolUse.input is invalid")) {
-                friendlyMessage =
-                    "Output was truncated before the diagram could be generated. Try a simpler request or increase the maxOutputLength."
-            }
-
-            // Translate image not supported error
-            if (
-                friendlyMessage.includes("image content block") ||
-                friendlyMessage.toLowerCase().includes("image_url")
-            ) {
-                friendlyMessage = "This model doesn't support image input."
-            }
-
-            // Add system message for error so it can be cleared
-            setMessages((currentMessages) => {
-                const errorMessage = {
-                    id: `error-${Date.now()}`,
-                    role: "system" as const,
-                    content: friendlyMessage,
-                    parts: [{ type: "text" as const, text: friendlyMessage }],
-                }
-                return [...currentMessages, errorMessage]
-            })
-
-            if (error.message.includes("Invalid or missing access code")) {
-                // Show settings dialog to help user fix it
-                setShowSettingsDialog(true)
-            }
-        },
-        onFinish: () => {},
-        sendAutomaticallyWhen: ({ messages }) => {
-            const isInContinuationMode = partialXmlRef.current.length > 0
-
-            const shouldRetry = hasToolErrors(
-                messages as unknown as ChatMessage[],
-            )
-
-            if (!shouldRetry) {
-                // No error, reset retry count and clear state
-                autoRetryCountRef.current = 0
-                continuationRetryCountRef.current = 0
-                partialXmlRef.current = ""
-                return false
-            }
-
-            // Continuation mode: limited retries for truncation handling
-            if (isInContinuationMode) {
                if (
-                    continuationRetryCountRef.current >=
-                    MAX_CONTINUATION_RETRY_COUNT
+                    error.message.includes("Rate limit exceeded") ||
+                    error.message.includes("tokens per minute")
                ) {
-                    toast.error(
-                        formatMessage(dict.errors.continuationRetryLimit, {
-                            max: MAX_CONTINUATION_RETRY_COUNT,
-                        }),
-                    )
+                    quotaManager.showTPMLimitToast()
+                    return
+                }
+
+                // Silence access code error in console since it's handled by UI
+                if (!error.message.includes("Invalid or missing access code")) {
+                    console.error("Chat error:", error)
+                }
+
+                // Translate technical errors into user-friendly messages
+                // The server now handles detailed error messages, so we can display them directly.
+                // But we still handle connection/network errors that happen before reaching the server.
+                let friendlyMessage = error.message
+
+                // Simple check for network errors if message is generic
+                if (friendlyMessage === "Failed to fetch") {
+                    friendlyMessage =
+                        "Network error. Please check your connection."
+                }
+
+                // Truncated tool input error (model output limit too low)
+                if (friendlyMessage.includes("toolUse.input is invalid")) {
+                    friendlyMessage =
+                        "Output was truncated before the diagram could be generated. Try a simpler request or increase the maxOutputLength."
+                }
+
+                // Translate image not supported error
+                if (
+                    friendlyMessage.includes("image content block") ||
+                    friendlyMessage.toLowerCase().includes("image_url")
+                ) {
+                    friendlyMessage = "This model doesn't support image input."
+                }
+
+                // Add system message for error so it can be cleared
+                setMessages((currentMessages) => {
+                    const errorMessage = {
+                        id: `error-${Date.now()}`,
+                        role: "system" as const,
+                        content: friendlyMessage,
+                        parts: [
+                            { type: "text" as const, text: friendlyMessage },
+                        ],
+                    }
+                    return [...currentMessages, errorMessage]
+                })
+
+                if (error.message.includes("Invalid or missing access code")) {
+                    // Show settings dialog to help user fix it
+                    setShowSettingsDialog(true)
+                }
+            },
+            onFinish: () => {},
+            sendAutomaticallyWhen: ({ messages }) => {
+                const isInContinuationMode = partialXmlRef.current.length > 0
+
+                const shouldRetry = hasToolErrors(
+                    messages as unknown as ChatMessage[],
+                )
+
+                if (!shouldRetry) {
+                    // No error, reset retry count and clear state
+                    autoRetryCountRef.current = 0
                    continuationRetryCountRef.current = 0
                    partialXmlRef.current = ""
                    return false
                }
-                continuationRetryCountRef.current++
-            } else {
-                // Regular error: check retry count limit
-                if (autoRetryCountRef.current >= MAX_AUTO_RETRY_COUNT) {
-                    toast.error(
-                        formatMessage(dict.errors.retryLimit, {
-                            max: MAX_AUTO_RETRY_COUNT,
-                        }),
-                    )
-                    autoRetryCountRef.current = 0
-                    partialXmlRef.current = ""
-                    return false
-                }
-                // Increment retry count for actual errors
-                autoRetryCountRef.current++
-            }

-            return true
-        },
-    })
+                // Continuation mode: limited retries for truncation handling
+                if (isInContinuationMode) {
+                    if (
+                        continuationRetryCountRef.current >=
+                        MAX_CONTINUATION_RETRY_COUNT
+                    ) {
+                        toast.error(
+                            formatMessage(dict.errors.continuationRetryLimit, {
+                                max: MAX_CONTINUATION_RETRY_COUNT,
+                            }),
+                        )
+                        continuationRetryCountRef.current = 0
+                        partialXmlRef.current = ""
+                        return false
+                    }
+                    continuationRetryCountRef.current++
+                } else {
+                    // Regular error: check retry count limit
+                    if (autoRetryCountRef.current >= MAX_AUTO_RETRY_COUNT) {
+                        toast.error(
+                            formatMessage(dict.errors.retryLimit, {
+                                max: MAX_AUTO_RETRY_COUNT,
+                            }),
+                        )
+                        autoRetryCountRef.current = 0
+                        partialXmlRef.current = ""
+                        return false
+                    }
+                    // Increment retry count for actual errors
+                    autoRetryCountRef.current++
+                }
+
+                return true
+            },
+        })

    // Store sendMessage in ref for use in callbacks (like handleImproveWithSuggestions)
    useEffect(() => {
@@ -590,7 +585,7 @@ export default function ChatPanel({

        try {
            const currentSession = sessionManager.currentSession
-            if (currentSession && currentSession.messages.length > 0) {
+            if (currentSession) {
                // Restore from session manager (IndexedDB)
                justLoadedSessionRef.current = true
                syncUIWithSession(currentSession)
@@ -627,7 +622,7 @@ export default function ChatPanel({
        lastSyncedSessionIdRef.current = newSessionId

        // Sync UI with new session
-        if (newSession && newSession.messages.length > 0) {
+        if (newSession) {
            justLoadedSessionRef.current = true
            syncUIWithSession(newSession)
        } else if (!newSession) {
@@ -906,10 +901,10 @@ export default function ChatPanel({
            if (result.wasCurrentSession) {
                // Deleted current session - clear UI and URL
                syncUIWithSession(null)
-                router.replace(pathname, { scroll: false })
+                router.replace(window.location.pathname, { scroll: false })
            }
        },
-        [sessionManager, syncUIWithSession, router, pathname],
+        [sessionManager, syncUIWithSession, router],
    )

    const handleNewChat = useCallback(async () => {
@@ -942,7 +937,7 @@ export default function ChatPanel({
        toast.success(dict.dialogs.clearSuccess)

        // Clear URL param to show blank state
-        router.replace(pathname, { scroll: false })
+        router.replace(window.location.pathname, { scroll: false })

        // After starting a fresh chat, move focus back to the chat input
        setShouldFocusInput(true)
@@ -957,7 +952,6 @@ export default function ChatPanel({
        dict.dialogs.clearSuccess,
        buildSessionData,
        setDiagramHistory,
-        pathname,
    ])

    const handleInputChange = (
@@ -997,29 +991,6 @@ export default function ChatPanel({
        }
    }

-    // Handle stop button click
-    const handleStop = useCallback(() => {
-        const lastMessage = messages[messages.length - 1]
-        const toolParts = lastMessage?.parts?.filter(
-            (part: any) =>
-                part.type?.startsWith("tool-") &&
-                part.state === "input-streaming",
-        )
-
-        toolParts?.forEach((part: any) => {
-            if (part.toolCallId) {
-                addToolOutput({
-                    tool: part.type.replace("tool-", ""),
-                    toolCallId: part.toolCallId,
-                    state: "output-error",
-                    errorText: "Stopped by user",
-                })
-            }
-        })
-
-        stop()
-    }, [messages, addToolOutput, stop])
-
    // Send chat message with headers
    const sendChatMessage = (
        parts: any,
@@ -1386,7 +1357,6 @@ export default function ChatPanel({
                    status={status}
                    onSubmit={onFormSubmit}
                    onChange={handleInputChange}
-                    onStop={handleStop}
                    files={files}
                    onFileChange={handleFileChange}
                    pdfData={pdfData}
@@ -1398,6 +1368,7 @@ export default function ChatPanel({
                    selectedModelId={modelConfig.selectedModelId}
                    onModelSelect={modelConfig.setSelectedModelId}
                    showUnvalidatedModels={modelConfig.showUnvalidatedModels}
+                    onConfigureModels={() => setShowModelConfigDialog(true)}
                    shouldFocus={shouldFocusInput}
                    onFocused={() => setShouldFocusInput(false)}
                />
@@ -1414,7 +1385,6 @@ export default function ChatPanel({
                onMinimalStyleChange={setMinimalStyle}
                vlmValidationEnabled={vlmValidationEnabled}
                onVlmValidationChange={handleVlmValidationChange}
-                onOpenModelConfig={() => setShowModelConfigDialog(true)}
            />

            <ModelConfigDialog
--- a/components/chat/ChatLobby.tsx
+++ b/components/chat/ChatLobby.tsx
@@ -8,9 +8,9 @@ import {
    Trash2,
    X,
 } from "lucide-react"
+import Image from "next/image"
 import { useState } from "react"
 import ExamplePanel from "@/components/chat-example-panel"
-import Image from "@/components/image-with-basepath"
 import {
    AlertDialog,
    AlertDialogAction,
--- a/components/chat/ValidationCard.tsx
+++ b/components/chat/ValidationCard.tsx
@@ -10,8 +10,8 @@ import {
    RefreshCw,
    X,
 } from "lucide-react"
+import Image from "next/image"
 import { useState } from "react"
-import Image from "@/components/image-with-basepath"
 import { useDictionary } from "@/hooks/use-dictionary"
 import type { ValidationResult } from "@/lib/diagram-validator"

--- a/components/file-preview-list.tsx
+++ b/components/file-preview-list.tsx
@@ -1,8 +1,8 @@
 "use client"

 import { FileCode, FileText, Link, Loader2, X } from "lucide-react"
+import Image from "next/image"
 import { useEffect, useRef, useState } from "react"
-import Image from "@/components/image-with-basepath"
 import { useDictionary } from "@/hooks/use-dictionary"
 import { isPdfFile, isTextFile } from "@/lib/pdf-utils"

--- a/components/history-dialog.tsx
+++ b/components/history-dialog.tsx
@@ -1,7 +1,7 @@
 "use client"

+import Image from "next/image"
 import { useState } from "react"
-import Image from "@/components/image-with-basepath"
 import { Button } from "@/components/ui/button"
 import {
    Dialog,
--- a/components/image-with-basepath.tsx
+++ b/components/image-with-basepath.tsx
@@ -1,16 +0,0 @@
-import NextImage, { type ImageProps } from "next/image"
-import { forwardRef } from "react"
-import { getAssetUrl } from "@/lib/base-path"
-
-export default forwardRef<HTMLImageElement, ImageProps>(
-    function Image(props, ref) {
-        const src =
-            typeof props.src === "string" &&
-            props.src.startsWith("/") &&
-            !props.src.startsWith("//")
-                ? getAssetUrl(props.src)
-                : props.src
-
-        return <NextImage {...props} src={src} ref={ref} />
-    },
-)
--- a/components/model-selector.tsx
+++ b/components/model-selector.tsx
@@ -7,6 +7,7 @@ import {
    ChevronDown,
    Monitor,
    Server,
+    Settings2,
    User,
 } from "lucide-react"
 import { useEffect, useMemo, useRef, useState } from "react"
@@ -33,6 +34,7 @@ interface ModelSelectorProps {
    models: FlattenedModel[]
    selectedModelId: string | undefined
    onSelect: (modelId: string | undefined) => void
+    onConfigure: () => void
    disabled?: boolean
    showUnvalidatedModels?: boolean
 }
@@ -83,6 +85,7 @@ export function ModelSelector({
    models,
    selectedModelId,
    onSelect,
+    onConfigure,
    disabled = false,
    showUnvalidatedModels = false,
 }: ModelSelectorProps) {
@@ -123,7 +126,9 @@ export function ModelSelector({
    )

    const handleSelect = (value: string) => {
-        if (value === "__server_default__") {
+        if (value === "__configure__") {
+            onConfigure()
+        } else if (value === "__server_default__") {
            onSelect(undefined)
        } else {
            onSelect(value)
@@ -381,6 +386,20 @@ export function ModelSelector({
                            </>
                        )}

+                        {/* Configure Option */}
+                        <ModelSelectorSeparator />
+                        <ModelSelectorGroup>
+                            <ModelSelectorItem
+                                value="__configure__"
+                                onSelect={handleSelect}
+                                className="cursor-pointer text-muted-foreground hover:text-foreground"
+                            >
+                                <Settings2 className="mr-2 h-4 w-4" />
+                                <ModelSelectorName>
+                                    {dict.modelConfig.configureModels}
+                                </ModelSelectorName>
+                            </ModelSelectorItem>
+                        </ModelSelectorGroup>
                        {/* Info text */}
                        <div className="px-3 py-2 text-xs text-muted-foreground border-t">
                            {showUnvalidatedModels
--- a/components/quota-limit-toast.tsx
+++ b/components/quota-limit-toast.tsx
@@ -79,7 +79,7 @@ export function QuotaLimitToast({
                <p
                    dangerouslySetInnerHTML={{
                        __html: formatMessage(dict.quota.doubaoSponsorship, {
-                            link: "https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project",
+                            link: "https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project",
                        }),
                    }}
                />
--- a/components/settings-dialog.tsx
+++ b/components/settings-dialog.tsx
@@ -1,6 +1,6 @@
 "use client"

-import { ChevronRight, Github, Info, Moon, Sun, Tag } from "lucide-react"
+import { Github, Info, Moon, Sun, Tag } from "lucide-react"
 import { usePathname, useRouter, useSearchParams } from "next/navigation"
 import { Suspense, useEffect, useState } from "react"
 import { toast } from "sonner"
@@ -56,7 +56,6 @@ const LANGUAGE_LABELS: Record<Locale, string> = {
    en: "English",
    zh: "中文",
    ja: "日本語",
-    "zh-Hant": "繁體中文",
 }

 interface SettingsDialogProps {
@@ -70,7 +69,6 @@ interface SettingsDialogProps {
    onMinimalStyleChange?: (value: boolean) => void
    vlmValidationEnabled?: boolean
    onVlmValidationChange?: (value: boolean) => void
-    onOpenModelConfig?: () => void
 }

 export const STORAGE_ACCESS_CODE_KEY = "next-ai-draw-io-access-code"
@@ -94,7 +92,6 @@ function SettingsContent({
    onMinimalStyleChange = () => {},
    vlmValidationEnabled = false,
    onVlmValidationChange = () => {},
-    onOpenModelConfig,
 }: SettingsDialogProps) {
    const dict = useDictionary()
    const router = useRouter()
@@ -286,27 +283,6 @@ function SettingsContent({
            {/* Content */}
            <div className="px-6 pb-6">
                <div className="divide-y divide-border-subtle">
-                    {/* API Keys & Models */}
-                    {onOpenModelConfig && (
-                        <SettingItem
-                            label={dict.settings.apiKeysModels}
-                            description={dict.settings.apiKeysModelsDescription}
-                        >
-                            <Button
-                                variant="ghost"
-                                size="sm"
-                                className="h-9 w-9 p-0"
-                                onClick={() => {
-                                    onOpenChange(false)
-                                    onOpenModelConfig()
-                                }}
-                                aria-label={dict.settings.apiKeysModels}
-                            >
-                                <ChevronRight className="h-4 w-4" />
-                            </Button>
-                        </SettingItem>
-                    )}
-
                    {/* Access Code (conditional) */}
                    {accessCodeRequired && (
                        <div className="py-4 first:pt-0 space-y-3">
--- a/docs/cn/README_CN.md
+++ b/docs/cn/README_CN.md
@@ -19,7 +19,7 @@

 一个集成了AI功能的Next.js网页应用，与draw.io图表无缝结合。通过自然语言命令和AI辅助可视化来创建、修改和增强图表。

-> 注：感谢 <img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [字节跳动豆包](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) 的赞助支持，本项目的 Demo 现已接入强大的 K2-thinking 模型！
+> 注：感谢 <img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [字节跳动豆包](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) 的赞助支持，本项目的 Demo 现已接入强大的 K2-thinking 模型！

 https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979

@@ -195,7 +195,7 @@ npm run dev

 ## 多提供商支持

-   [字节跳动豆包](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
+-   [字节跳动豆包](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
 -   AWS Bedrock（默认）
 -   OpenAI
 -   Anthropic
@@ -236,7 +236,7 @@ npm run dev

 ## 支持与联系

-**特别感谢[字节跳动豆包](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)赞助演示站点的 API Token 使用！** 注册火山引擎 ARK 平台即可获得50万免费Token！
+**特别感谢[字节跳动豆包](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)赞助演示站点的 API Token 使用！** 注册火山引擎 ARK 平台即可获得50万免费Token！

 如果您觉得这个项目有用，请考虑[赞助](https://github.com/sponsors/DayuanJiang)来帮助我托管在线演示站点！

--- a/docs/cn/ai-providers.md
+++ b/docs/cn/ai-providers.md
@@ -13,7 +13,7 @@

 ### 豆包 (字节跳动火山引擎)

-> **免费 Token**：在 [火山引擎 ARK 平台](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) 注册，即可获得所有模型 50 万免费 Token！
+> **免费 Token**：在 [火山引擎 ARK 平台](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) 注册，即可获得所有模型 50 万免费 Token！

 ```bash
 DOUBAO_API_KEY=your_api_key
--- a/docs/en/ai-providers.md
+++ b/docs/en/ai-providers.md
@@ -13,7 +13,7 @@ This guide explains how to configure different AI model providers for next-ai-dr

 ### Doubao (ByteDance Volcengine)

-> **Free tokens**: Register on the [Volcengine ARK platform](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) to get 500K free tokens for all models!
+> **Free tokens**: Register on the [Volcengine ARK platform](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) to get 500K free tokens for all models!

 ```bash
 DOUBAO_API_KEY=your_api_key
--- a/docs/ja/README_JA.md
+++ b/docs/ja/README_JA.md
@@ -19,7 +19,7 @@

 AI機能とdraw.ioダイアグラムを統合したNext.jsウェブアプリケーションです。自然言語コマンドとAI支援の可視化により、ダイアグラムを作成、修正、強化できます。

-> 注：<img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) のご支援により、デモサイトに強力な K2-thinking モデルを導入しました！
+> 注：<img src="https://raw.githubusercontent.com/DayuanJiang/next-ai-draw-io/main/public/doubao-color.png" alt="" height="20" /> [ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project) のご支援により、デモサイトに強力な K2-thinking モデルを導入しました！

 https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979

@@ -196,7 +196,7 @@ Next.jsアプリをデプロイする最も簡単な方法は、Next.jsの作成

 ## マルチプロバイダーサポート

-   [ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
+-   [ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)
 -   AWS Bedrock（デフォルト）
 -   OpenAI
 -   Anthropic
@@ -237,7 +237,7 @@ AWS BedrockとOpenRouter以外のすべてのプロバイダーはカスタム

 ## サポート＆お問い合わせ

-**デモサイトのAPIトークン使用を支援してくださった[ByteDance Doubao](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)に特別な感謝を申し上げます！** ARKプラットフォームに登録すると、50万トークンが無料でもらえます！
+**デモサイトのAPIトークン使用を支援してくださった[ByteDance Doubao](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)に特別な感謝を申し上げます！** ARKプラットフォームに登録すると、50万トークンが無料でもらえます！

 このプロジェクトが役に立ったら、ライブデモサイトのホスティングを支援するために[スポンサー](https://github.com/sponsors/DayuanJiang)をご検討ください！

--- a/docs/ja/ai-providers.md
+++ b/docs/ja/ai-providers.md
@@ -13,7 +13,7 @@

 ### Doubao (ByteDance Volcengine)

-> **無料トークン**: [Volcengine ARK プラットフォーム](https://www.volcengine.com/activity/newyear-referral?utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)に登録すると、すべてのモデルで使える50万トークンが無料で入手できます！
+> **無料トークン**: [Volcengine ARK プラットフォーム](https://console.volcengine.com/ark/region:ark+cn-beijing/overview?briefPage=0&briefType=introduce&type=new&utm_campaign=doubao&utm_content=aidrawio&utm_medium=github&utm_source=coopensrc&utm_term=project)に登録すると、すべてのモデルで使える50万トークンが無料で入手できます！

 ```bash
 DOUBAO_API_KEY=your_api_key
--- a/electron/electron.d.ts
+++ b/electron/electron.d.ts
@@ -69,9 +69,7 @@ declare global {
            /** Set proxy configuration (saves and restarts server) */
            setProxy: (config: ProxyConfig) => Promise<SetProxyResult>
            /** Get user's preferred locale */
-            getUserLocale: () => Promise<
-                "en" | "zh" | "ja" | "zh-Hant" | undefined
-            >
+            getUserLocale: () => Promise<"en" | "zh" | "ja" | undefined>
            /** Set user's preferred locale */
            setUserLocale: (locale: string) => Promise<SetUserLocaleResult>
        }
--- a/electron/main/config-manager.ts
+++ b/electron/main/config-manager.ts
@@ -137,7 +137,7 @@ interface ConfigPresetsFile {
    version: 1
    currentPresetId: string | null
    presets: ConfigPreset[]
-    userLocale?: "en" | "zh" | "ja" | "zh-Hant"
+    userLocale?: "en" | "zh" | "ja"
 }

 const CONFIG_FILE_NAME = "config-presets.json"
@@ -470,7 +470,7 @@ export function getCurrentPresetEnv(): Record<string, string> {
 * Get user's preferred locale from config
 * Returns undefined if not set
 */
-export function getUserLocale(): "en" | "zh" | "ja" | "zh-Hant" | undefined {
+export function getUserLocale(): "en" | "zh" | "ja" | undefined {
    const data = loadPresets()
    return data.userLocale
 }
@@ -478,9 +478,7 @@ export function getUserLocale(): "en" | "zh" | "ja" | "zh-Hant" | undefined {
 /**
 * Set user's preferred locale in config
 */
-export function setUserLocale(
-    locale: "en" | "zh" | "ja" | "zh-Hant" | null,
-): void {
+export function setUserLocale(locale: "en" | "zh" | "ja" | null): void {
    const data = loadPresets()
    data.userLocale = locale === null ? undefined : locale
    savePresets(data)
--- a/electron/main/ipc-handlers.ts
+++ b/electron/main/ipc-handlers.ts
@@ -263,12 +263,12 @@ export function registerIpcHandlers(): void {

    ipcMain.handle("set-user-locale", (_event, locale: string) => {
        // Validate locale is one of the supported values
-        if (!["en", "zh", "ja", "zh-Hant"].includes(locale)) {
+        if (!["en", "zh", "ja"].includes(locale)) {
            return { success: false, error: "Invalid locale" }
        }

        try {
-            setUserLocale(locale as "en" | "zh" | "ja" | "zh-Hant")
+            setUserLocale(locale as "en" | "zh" | "ja")
            // Rebuild the menu to reflect the new locale
            rebuildAppMenu()
            return { success: true }
--- a/electron/main/menu-i18n.ts
+++ b/electron/main/menu-i18n.ts
@@ -5,7 +5,7 @@

 import { getUserLocale } from "./config-manager"

-export type MenuLocale = "en" | "zh" | "ja" | "zh-Hant"
+export type MenuLocale = "en" | "zh" | "ja"

 export interface MenuTranslations {
    // App menu (macOS only)
@@ -119,34 +119,6 @@ const translations: Record<MenuLocale, MenuTranslations> = {
        documentation: "ドキュメント",
        reportIssue: "問題を報告",
    },
-
-    "zh-Hant": {
-        // App menu
-        settings: "設定...",
-
-        // File menu
-        file: "檔案",
-
-        // Edit menu
-        edit: "編輯",
-
-        // View menu
-        view: "檢視",
-
-        // Configuration menu
-        configuration: "配置",
-        switchPreset: "切換預設",
-        managePresets: "管理預設...",
-        addConfigurationPreset: "新增配置預設...",
-
-        // Window menu
-        window: "視窗",
-
-        // Help menu
-        help: "說明",
-        documentation: "文件",
-        reportIssue: "回報問題",
-    },
 }

 /**
@@ -154,16 +126,6 @@ const translations: Record<MenuLocale, MenuTranslations> = {
 * Falls back to English if locale is not supported
 */
 export function getMenuTranslations(locale: string): MenuTranslations {
-    // Check for zh-Hant before normalizing
-    if (
-        locale === "zh-Hant" ||
-        locale.toLowerCase().startsWith("zh-hant") ||
-        locale.toLowerCase().startsWith("zh-tw") ||
-        locale.toLowerCase().startsWith("zh-hk")
-    ) {
-        return translations["zh-Hant"]
-    }
-
    // Normalize locale (e.g., "zh-CN" -> "zh", "ja-JP" -> "ja")
    const normalized = locale.toLowerCase().split("-")[0]

@@ -174,21 +136,10 @@ export function getMenuTranslations(locale: string): MenuTranslations {

 /**
 * Detect system locale from Electron app
- * Returns one of: "en", "zh", "ja", "zh-Hant"
+ * Returns one of: "en", "zh", "ja"
 */
 export function detectSystemLocale(appLocale: string): MenuLocale {
-    const lower = appLocale.toLowerCase()
-
-    // Distinguish Traditional Chinese locales (TW, HK, Hant) from Simplified
-    if (
-        lower.startsWith("zh-hant") ||
-        lower.startsWith("zh-tw") ||
-        lower.startsWith("zh-hk")
-    ) {
-        return "zh-Hant"
-    }
-
-    const normalized = lower.split("-")[0]
+    const normalized = appLocale.toLowerCase().split("-")[0]

    if (normalized === "zh") return "zh"
    if (normalized === "ja") return "ja"
--- a/hooks/use-model-config.ts
+++ b/hooks/use-model-config.ts
@@ -1,7 +1,6 @@
 "use client"

 import { useCallback, useEffect, useState } from "react"
-import { getApiEndpoint } from "@/lib/base-path"
 import type { FlattenedServerModel } from "@/lib/server-model-config"
 import { STORAGE_KEYS } from "@/lib/storage"
 import {
@@ -148,7 +147,7 @@ export function useModelConfig(): UseModelConfigReturn {
    useEffect(() => {
        if (typeof window === "undefined") return

-        fetch(getApiEndpoint("/api/server-models"))
+        fetch("/api/server-models")
            .then((res) => {
                if (!res.ok) {
                    console.error(
--- a/lib/ai-providers.ts
+++ b/lib/ai-providers.ts
@@ -39,7 +39,7 @@ export interface ClientOverrides {
    baseUrlEnv?: string
 }

-// Providers that can be selected from client settings
+// Providers that can be used with client-provided API keys
 const ALLOWED_CLIENT_PROVIDERS: ProviderName[] = [
    "openai",
    "anthropic",
@@ -53,7 +53,6 @@ const ALLOWED_CLIENT_PROVIDERS: ProviderName[] = [
    "sglang",
    "gateway",
    "edgeone",
-    "ollama",
    "doubao",
    "modelscope",
 ]
@@ -573,13 +572,12 @@ export function getAIModel(overrides?: ClientOverrides): ModelConfig {
    // SECURITY: Prevent SSRF attacks (GHSA-9qf7-mprq-9qgm)
    // If a custom baseUrl is provided, an API key MUST also be provided.
    // This prevents attackers from redirecting server API keys to malicious endpoints.
-    // Exception: EdgeOne and Ollama providers don't require API keys
+    // Exception: EdgeOne provider doesn't require API key (uses Edge AI runtime)
    if (
        overrides?.baseUrl &&
        !overrides?.apiKey &&
        !(overrides?.provider === "vertexai" && overrides?.vertexApiKey) &&
-        overrides?.provider !== "edgeone" &&
-        overrides?.provider !== "ollama"
+        overrides?.provider !== "edgeone"
    ) {
        throw new Error(
            `API key is required when using a custom base URL. ` +
@@ -838,16 +836,16 @@ export function getAIModel(overrides?: ClientOverrides): ModelConfig {
            break
        }

-        case "ollama": {
-            const baseURL = overrides?.baseUrl || process.env.OLLAMA_BASE_URL
-            if (baseURL) {
-                const customOllama = createOllama({ baseURL })
+        case "ollama":
+            if (process.env.OLLAMA_BASE_URL) {
+                const customOllama = createOllama({
+                    baseURL: process.env.OLLAMA_BASE_URL,
+                })
                model = customOllama(modelId)
            } else {
                model = ollama(modelId)
            }
            break
-        }

        case "openrouter": {
            const apiKey = resolveApiKey(overrides, "OPENROUTER_API_KEY")
@@ -1161,15 +1159,8 @@ export function supportsImageInput(modelId: string): boolean {
        lowerModelId.includes("vision") || lowerModelId.includes("vl")

    // Models that DON'T support image/vision input (unless vision variant)
-    // Kimi K2 doesn't support images, but K2.5 does
-    // Only block kimi-k2 specifically, not other Kimi models
-    if (
-        (lowerModelId.includes("kimi-k2") ||
-            lowerModelId.includes("kimi_k2")) &&
-        !hasVisionIndicator &&
-        !lowerModelId.includes("2.5") &&
-        !lowerModelId.includes("k2.5")
-    ) {
+    // Kimi K2 models don't support images
+    if (lowerModelId.includes("kimi") && !hasVisionIndicator) {
        return false
    }

--- a/lib/i18n/config.ts
+++ b/lib/i18n/config.ts
@@ -1,6 +1,6 @@
 export const i18n = {
    defaultLocale: "en",
-    locales: ["en", "zh", "ja", "zh-Hant"],
+    locales: ["en", "zh", "ja"],
 } as const

 export type Locale = (typeof i18n)["locales"][number]
--- a/lib/i18n/dictionaries.ts
+++ b/lib/i18n/dictionaries.ts
@@ -6,8 +6,6 @@ const dictionaries = {
    en: () => import("./dictionaries/en.json").then((m) => m.default),
    zh: () => import("./dictionaries/zh.json").then((m) => m.default),
    ja: () => import("./dictionaries/ja.json").then((m) => m.default),
-    "zh-Hant": () =>
-        import("./dictionaries/zh-Hant.json").then((m) => m.default),
 }

 export type Dictionary = Awaited<ReturnType<(typeof dictionaries)["en"]>>
--- a/lib/i18n/dictionaries/en.json
+++ b/lib/i18n/dictionaries/en.json
@@ -34,7 +34,7 @@
    "chat": {
        "placeholder": "Describe your diagram or upload a file...",
        "send": "Send",
-        "stopGeneration": "Stop generation",
+        "sending": "Sending...",
        "sendMessage": "Send message",
        "clearConversation": "Clear conversation",
        "diagramHistory": "Diagram history",
@@ -77,8 +77,6 @@
    "settings": {
        "title": "Settings",
        "description": "Configure your application settings.",
-        "apiKeysModels": "API Keys & Models",
-        "apiKeysModelsDescription": "Configure AI providers and API keys.",
        "accessCode": "Access Code",
        "accessCodePlaceholder": "Enter access code",
        "accessCodeDescription": "Required to use this application.",
--- a/lib/i18n/dictionaries/ja.json
+++ b/lib/i18n/dictionaries/ja.json
@@ -34,7 +34,7 @@
    "chat": {
        "placeholder": "ダイアグラムを説明するか、ファイルをアップロード...",
        "send": "送信",
-        "stopGeneration": "生成を停止",
+        "sending": "送信中...",
        "sendMessage": "メッセージを送信",
        "clearConversation": "会話をクリア",
        "diagramHistory": "ダイアグラム履歴",
@@ -77,8 +77,6 @@
    "settings": {
        "title": "設定",
        "description": "アプリケーション設定を構成します。",
-        "apiKeysModels": "API キーとモデル",
-        "apiKeysModelsDescription": "AI プロバイダーと API キーを設定します。",
        "accessCode": "アクセスコード",
        "accessCodePlaceholder": "アクセスコードを入力",
        "accessCodeDescription": "このアプリケーションを使用するために必要です。",
--- a/lib/i18n/dictionaries/zh-Hant.json
+++ b/lib/i18n/dictionaries/zh-Hant.json
@@ -1,342 +0,0 @@
-{
-    "common": {
-        "save": "儲存",
-        "cancel": "取消",
-        "close": "關閉",
-        "confirm": "確認",
-        "clear": "清除",
-        "edit": "編輯",
-        "delete": "刪除",
-        "loading": "載入中...",
-        "new": "新建"
-    },
-    "nav": {
-        "about": "關於",
-        "editor": "編輯器",
-        "newChat": "開始新對話",
-        "github": "GitHub",
-        "settings": "設定",
-        "hidePanel": "隱藏聊天面板 (Ctrl+B)",
-        "showPanel": "顯示聊天面板 (Ctrl+B)",
-        "aiChat": "AI 聊天"
-    },
-    "providers": {
-        "useServerDefault": "使用伺服器預設值",
-        "openai": "OpenAI",
-        "anthropic": "Anthropic",
-        "google": "Google",
-        "azure": "Azure OpenAI",
-        "openrouter": "OpenRouter",
-        "deepseek": "DeepSeek",
-        "siliconflow": "SiliconFlow",
-        "modelscope": "ModelScope"
-    },
-    "chat": {
-        "placeholder": "描述您的圖表或上傳檔案...",
-        "send": "傳送",
-        "stopGeneration": "停止產生",
-        "sendMessage": "傳送訊息",
-        "clearConversation": "清除對話",
-        "diagramHistory": "圖表歷史",
-        "saveDiagram": "儲存圖表",
-        "uploadFile": "上傳檔案（圖片、PDF、文字）",
-        "minimalStyle": "簡約",
-        "styledMode": "精緻",
-        "minimalTooltip": "使用簡約模式以加快產生速度（無顏色）",
-        "regenerate": "重新產生回應",
-        "copyResponse": "複製回應",
-        "copied": "已複製！",
-        "failedToCopy": "複製失敗",
-        "failedToCopyDetail": "複製訊息失敗。請手動複製或檢查剪貼簿權限。",
-        "goodResponse": "有幫助",
-        "badResponse": "無幫助",
-        "clickToEdit": "點擊編輯",
-        "editMessage": "編輯訊息",
-        "saveAndSubmit": "儲存並提交",
-        "ExtractURL": "從 URL 擷取"
-    },
-    "examples": {
-        "title": "用 AI 建立圖表",
-        "subtitle": "描述您想要建立的內容或上傳圖片進行複製",
-        "quickExamples": "快速範例",
-        "paperToDiagram": "文件轉圖表",
-        "paperDescription": "上傳 .pdf, .txt, .md, .json, .csv, .py, .js, .ts 等檔案",
-        "animatedDiagram": "動畫圖表",
-        "animatedDescription": "繪製帶有動畫連接器的 Transformer 架構",
-        "awsArchitecture": "AWS 架構",
-        "awsDescription": "使用 AWS 圖示建立雲端架構圖",
-        "replicateFlowchart": "複製流程圖",
-        "replicateDescription": "上傳並複製現有流程圖",
-        "creativeDrawing": "創意繪圖",
-        "creativeDescription": "繪製有趣且富有創意的內容",
-        "cachedNote": "範例已快取，可即時回應",
-        "mcpServer": "MCP 伺服器",
-        "mcpDescription": "在 Claude Desktop、VS Code 和 Cursor 中使用",
-        "preview": "預覽"
-    },
-    "settings": {
-        "title": "設定",
-        "description": "配置您的應用程式設定。",
-        "apiKeysModels": "API 金鑰和模型",
-        "apiKeysModelsDescription": "配置 AI 提供商和 API 金鑰。",
-        "accessCode": "存取碼",
-        "accessCodePlaceholder": "輸入存取碼",
-        "accessCodeDescription": "使用此應用程式需要存取碼。",
-        "aiProvider": "AI 提供商設定",
-        "aiProviderDescription": "使用您自己的 API 金鑰來繞過使用限制。您的金鑰僅儲存在瀏覽器本機，不會儲存在伺服器上。",
-        "provider": "提供商",
-        "modelId": "模型 ID",
-        "apiKey": "API 金鑰",
-        "apiKeyPlaceholder": "您的 API 金鑰",
-        "baseUrl": "基礎 URL（可選）",
-        "customEndpoint": "自訂端點 URL",
-        "overrides": "覆寫",
-        "clearSettings": "清除設定",
-        "useServerDefault": "使用伺服器預設值",
-        "language": "語言",
-        "languageDescription": "選擇介面語言。",
-        "theme": "主題",
-        "themeDescription": "介面和 DrawIO 畫布的深色/淺色模式。",
-        "drawioStyle": "DrawIO 樣式",
-        "drawioStyleDescription": "畫布樣式：",
-        "switchTo": "切換到",
-        "minimal": "簡約",
-        "sketch": "草圖",
-        "diagramStyle": "圖表樣式",
-        "diagramStyleDescription": "切換簡約與精緻圖表輸出模式。",
-        "sendShortcut": "傳送快捷鍵",
-        "sendShortcutDescription": "選擇傳送訊息的方式。",
-        "enterToSend": "Enter 傳送",
-        "ctrlEnterToSend": "Cmd/Ctrl+Enter 傳送",
-        "diagramActions": "圖表操作",
-        "diagramActionsDescription": "管理圖表歷史紀錄和匯出",
-        "history": "歷史紀錄",
-        "download": "下載",
-        "proxy": "代理設定",
-        "proxyDescription": "配置 API 請求的 HTTP/HTTPS 代理（僅桌面版）",
-        "httpProxy": "HTTP 代理",
-        "httpsProxy": "HTTPS 代理",
-        "applyProxy": "套用",
-        "proxyApplied": "代理設定已套用",
-        "diagramValidation": "圖表驗證（實驗性）",
-        "diagramValidationDescription": "使用視覺語言模型驗證產生的圖表。需要支援視覺的模型，如 GPT-5.2 或 Sonnet-4.5。",
-        "enabled": "已啟用",
-        "disabled": "已停用"
-    },
-    "save": {
-        "title": "儲存圖表",
-        "description": "選擇格式和檔案名稱以儲存您的圖表。",
-        "format": "格式",
-        "filename": "檔案名稱",
-        "filenamePlaceholder": "輸入檔案名稱",
-        "formats": {
-            "drawio": "Draw.io XML",
-            "png": "PNG 圖片",
-            "svg": "SVG 圖片"
-        },
-        "savedSuccessfully": "儲存成功！"
-    },
-    "history": {
-        "title": "圖表歷史",
-        "description": "在 AI 修改之前儲存的每個圖表。\n點擊圖表以還原它",
-        "noHistory": "尚無歷史紀錄。傳送訊息以建立圖表歷史。",
-        "version": "版本",
-        "restoreTo": "還原到版本 {version}？"
-    },
-    "dialogs": {
-        "clearTitle": "清除所有內容？",
-        "clearDescription": "這將清除目前對話並重設圖表。此操作無法復原。",
-        "clearEverything": "清除所有內容",
-        "clearSuccess": "已開始新對話"
-    },
-    "errors": {
-        "maxFiles": "檔案太多。最多允許 {max} 個。",
-        "onlyMoreAllowed": "只能再新增 {slots} 個檔案",
-        "fileExceeds": "「{name}」大小為 {size}（超過 {max}MB）",
-        "unsupportedType": "「{name}」不是支援的檔案類型",
-        "filesRejected": "{count} 個檔案被拒絕：",
-        "andMore": "...還有 {count} 個",
-        "invalidAccessCode": "無效或缺少存取碼。請在設定中配置。",
-        "networkError": "網路錯誤。請檢查您的連線。",
-        "retryLimit": "已達自動重試限制（{max}）。請手動重試。",
-        "continuationRetryLimit": "已達繼續重試限制（{max}）。圖表可能過於複雜。",
-        "validationFailed": "圖表驗證失敗。請嘗試重新產生。",
-        "malformedXml": "AI 產生的圖表 XML 無效。請嘗試重新產生。",
-        "failedToProcess": "無法處理圖表。請嘗試重新產生。",
-        "sessionCorrupted": "工作階段資料已損壞。重新開始。",
-        "failedToSave": "無法儲存訊息到 localStorage",
-        "failedToRestore": "無法從 localStorage 還原",
-        "failedToPersist": "卸載前無法持久化狀態",
-        "failedToExport": "取得圖表資料時出錯",
-        "failedToLoadExample": "載入範例圖片時出錯",
-        "failedToRecordFeedback": "記錄您的回饋失敗。請重試。",
-        "storageUpdateFailed": "聊天已清除，但無法更新瀏覽器儲存空間"
-    },
-    "quota": {
-        "dailyLimit": "已達每日配額",
-        "tokenLimit": "已達每日令牌限制",
-        "tpmLimit": "速率限制",
-        "tpmMessage": "請求過多。請稍等片刻。",
-        "tpmMessageDetailed": "達到速率限制（{limit} 令牌/分鐘）。請等待 {seconds} 秒後再傳送請求。",
-        "messageApi": "看來您今天的體驗次數已達上限。非常高興您玩得開心，雖然本專案由字節跳動豆包慷慨贊助，但為了確保大家都能公平使用，我們不得不對使用量做一點小小的限制。",
-        "messageToken": "看來您今天的 Token 用量已達上限。非常高興您玩得開心，雖然本專案由字節跳動豆包慷慨贊助，但為了確保大家都能公平使用，我們不得不對使用量做一點小小的限制。",
-        "tip": "<strong>提示：</strong>您可以使用自己的 API 金鑰（點擊設定圖示）或自行託管專案來繞過這些限制。",
-        "reset": "您的限制將在明天重設。感謝您的理解。",
-        "doubaoSponsorship": "<a href=\"{link}\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"underline hover:text-foreground\">點此註冊</a>可獲得每個模型 50 萬免費 Token（包括豆包、DeepSeek 和 Kimi），然後在模型設定中配置您的 API Key。",
-        "configModel": "使用您的金鑰",
-        "selfHost": "自行託管",
-        "sponsor": "贊助",
-        "learnMore": "了解更多 →",
-        "usedOf": "{used}/{limit}"
-    },
-    "tools": {
-        "generateDiagram": "產生圖表",
-        "editDiagram": "編輯圖表",
-        "appendDiagram": "繼續圖表",
-        "complete": "完成",
-        "error": "錯誤",
-        "truncated": "已截斷"
-    },
-    "file": {
-        "reading": "讀取中...",
-        "chars": "字元",
-        "removeFile": "移除檔案"
-    },
-    "url": {
-        "title": "從 URL 擷取內容",
-        "description": "貼上 URL 以擷取和分析其內容",
-        "Extracting": "擷取中...",
-        "extract": "擷取",
-        "Cancel": "取消",
-        "enterUrl": "請輸入 URL",
-        "invalidFormat": "URL 格式無效"
-    },
-    "reasoning": {
-        "thinking": "思考中...",
-        "thoughtFor": "思考了 {duration} 秒",
-        "thoughtBrief": "思考了幾秒鐘"
-    },
-    "dev": {
-        "title": "開發：XML 串流模擬器",
-        "preset": "預設：",
-        "selectPreset": "選擇預設...",
-        "clear": "清除",
-        "placeholder": "在此貼上 mxCell XML 或選擇預設...",
-        "interval": "間隔：",
-        "chars": "字元：",
-        "streaming": "串流傳輸中...",
-        "simulate": "模擬",
-        "stop": "停止",
-        "testQuotaToast": "測試配額提示",
-        "simulatingMessage": "[開發] 模擬 XML 串流傳輸",
-        "successMessage": "成功顯示圖表。"
-    },
-    "about": {
-        "modelChange": "模型變更與用量限制",
-        "walletCrying": "（別名：我的錢包頂不住了）",
-        "seekingSponsorship": "尋求贊助（求大佬撈一把）",
-        "contactMe": "聯絡我",
-        "usageNotice": "由於使用量過高，我已將模型從 Claude 更換為 minimax-m2，並設定了一些用量限制。詳情請查看關於頁面。"
-    },
-    "sessionHistory": {
-        "tooltip": "聊天歷史",
-        "newChat": "新對話",
-        "empty": "暫無聊天紀錄",
-        "emptyHint": "開始對話吧",
-        "today": "今天",
-        "yesterday": "昨天",
-        "thisWeek": "本週",
-        "earlier": "更早",
-        "deleteTitle": "刪除此對話？",
-        "deleteDescription": "這將永久刪除此聊天工作階段及其圖表。此操作無法復原。",
-        "recentChats": "最近對話",
-        "justNow": "剛剛",
-        "searchPlaceholder": "搜尋對話...",
-        "noResults": "未找到對話"
-    },
-    "validation": {
-        "title": "驗證圖表",
-        "capturing": "截圖中",
-        "validating": "驗證中",
-        "validatingWithAttempt": "驗證中 ({attempt}/{max})",
-        "valid": "通過",
-        "validWithWarnings": "通過（有警告）",
-        "issuesFound": "發現問題",
-        "error": "錯誤",
-        "skipped": "已跳過",
-        "capturedScreenshot": "截圖預覽：",
-        "issuesFoundLabel": "發現的問題：",
-        "suggestions": "建議：",
-        "passedValidation": "圖表通過視覺驗證 - 未發現問題。",
-        "improvementRequested": "改進請求已傳送 - 請查看下方新圖表",
-        "improveWithSuggestions": "根據建議改進",
-        "regenerateWithFeedback": "使用驗證回饋重新產生圖表"
-    },
-    "modelConfig": {
-        "title": "AI 模型配置",
-        "description": "配置多個 AI 提供商和模型",
-        "configure": "配置",
-        "addProvider": "新增提供商",
-        "addModel": "新增模型",
-        "modelId": "模型 ID",
-        "modelLabel": "顯示名稱",
-        "streaming": "啟用串流輸出",
-        "deleteProvider": "刪除提供商",
-        "deleteModel": "刪除模型",
-        "noModels": "尚未配置模型。新增模型以開始使用。",
-        "selectProvider": "選擇一個提供商或新增",
-        "configureMultiple": "配置多個 AI 提供商並輕鬆切換",
-        "apiKeyStored": "API 金鑰儲存在您的瀏覽器本機",
-        "test": "測試",
-        "validationError": "驗證失敗",
-        "addModelFirst": "請先新增至少一個模型以進行驗證",
-        "providers": "提供商",
-        "addProviderHint": "新增提供商即可開始使用",
-        "verified": "已驗證",
-        "configuration": "配置",
-        "displayName": "顯示名稱",
-        "awsAccessKeyId": "AWS 存取金鑰 ID",
-        "awsSecretAccessKey": "AWS Secret Access Key",
-        "awsRegion": "AWS 區域",
-        "selectRegion": "選擇區域",
-        "apiKey": "API 金鑰",
-        "enterApiKey": "輸入您的 API 金鑰",
-        "enterSecretKey": "輸入您的 Secret Key",
-        "baseUrl": "基礎 URL",
-        "optional": "（可選）",
-        "baseUrlWithExample": "基礎 URL（可選，例如 {example}）",
-        "customEndpoint": "自訂端點 URL",
-        "models": "模型",
-        "customModelId": "自訂模型 ID...",
-        "allAdded": "已全部新增",
-        "suggested": "推薦",
-        "noModelsConfigured": "尚未配置模型",
-        "modelIdEmpty": "模型 ID 不能為空",
-        "modelIdExists": "此模型 ID 已存在",
-        "configureProviders": "配置 AI 提供商",
-        "selectProviderHint": "從列表中選擇提供商或新增以配置 API 金鑰和模型",
-        "deleteConfirmDesc": "確定要刪除 {name} 嗎？這將移除所有配置的模型且無法復原。",
-        "typeToConfirm": "輸入「{name}」以確認",
-        "typeProviderName": "輸入提供商名稱...",
-        "modelsConfiguredCount": "已配置 {count} 個模型",
-        "validationFailedCount": "{count} 個模型驗證失敗",
-        "cancel": "取消",
-        "delete": "刪除",
-        "clickToChange": "（點擊變更）",
-        "usingServerDefault": "使用伺服器預設模型",
-        "selectModel": "選擇模型",
-        "searchModels": "搜尋模型...",
-        "noVerifiedModels": "沒有已驗證的模型。請先測試您的模型。",
-        "noModelsFound": "未找到模型。",
-        "default": "預設",
-        "serverDefault": "伺服器預設",
-        "serverModels": "伺服器模型",
-        "userModels": "使用者模型",
-        "configureModels": "配置模型...",
-        "onlyVerifiedShown": "僅顯示已驗證的模型",
-        "showUnvalidatedModels": "顯示未驗證的模型",
-        "allModelsShown": "顯示所有模型（包括未驗證的）",
-        "unvalidatedModelWarning": "此模型尚未驗證",
-        "serverDefaultModel": "伺服器預設模型"
-    }
-}
--- a/lib/i18n/dictionaries/zh.json
+++ b/lib/i18n/dictionaries/zh.json
@@ -34,7 +34,7 @@
    "chat": {
        "placeholder": "描述您的图表或上传文件...",
        "send": "发送",
-        "stopGeneration": "停止生成",
+        "sending": "发送中...",
        "sendMessage": "发送消息",
        "clearConversation": "清除对话",
        "diagramHistory": "图表历史",
@@ -77,8 +77,6 @@
    "settings": {
        "title": "设置",
        "description": "配置您的应用程序设置。",
-        "apiKeysModels": "API 密钥和模型",
-        "apiKeysModelsDescription": "配置 AI 提供商和 API 密钥。",
        "accessCode": "访问码",
        "accessCodePlaceholder": "输入访问码",
        "accessCodeDescription": "使用此应用程序需要访问码。",
--- a/lib/session-storage.ts
+++ b/lib/session-storage.ts
@@ -47,6 +47,33 @@ interface ChatSessionDB extends DBSchema {

 // Database singleton
 let dbPromise: Promise<IDBPDatabase<ChatSessionDB>> | null = null
+const resetDBPromise = () => {
+    dbPromise = null
+}
+
+const isClosingError = (error: unknown): boolean => {
+    return (
+        error instanceof DOMException &&
+        error.name === "InvalidStateError" &&
+        /closing/i.test(error.message)
+    )
+}
+
+const withDB = async <T>(
+    action: (db: IDBPDatabase<ChatSessionDB>) => Promise<T>,
+): Promise<T> => {
+    try {
+        const db = await getDB()
+        return await action(db)
+    } catch (error) {
+        if (isClosingError(error)) {
+            resetDBPromise()
+            const db = await getDB()
+            return await action(db)
+        }
+        throw error
+    }
+}

 async function getDB(): Promise<IDBPDatabase<ChatSessionDB>> {
    if (!dbPromise) {
@@ -60,7 +87,23 @@ async function getDB(): Promise<IDBPDatabase<ChatSessionDB>> {
                }
                // Future migrations: if (oldVersion < 2) { ... }
            },
+            terminated() {
+                resetDBPromise()
+            },
        })
+        dbPromise
+            .then((db) => {
+                db.onversionchange = () => {
+                    db.close()
+                    resetDBPromise()
+                }
+                db.onclose = () => {
+                    resetDBPromise()
+                }
+            })
+            .catch(() => {
+                resetDBPromise()
+            })
    }
    return dbPromise
 }
@@ -79,27 +122,29 @@ export function isIndexedDBAvailable(): boolean {
 export async function getAllSessionMetadata(): Promise<SessionMetadata[]> {
    if (!isIndexedDBAvailable()) return []
    try {
-        const db = await getDB()
-        const tx = db.transaction(STORE_NAME, "readonly")
-        const index = tx.store.index("by-updated")
-        const metadata: SessionMetadata[] = []
+        return await withDB(async (db) => {
+            const tx = db.transaction(STORE_NAME, "readonly")
+            const index = tx.store.index("by-updated")
+            const metadata: SessionMetadata[] = []

-        // Use cursor to read only metadata fields (avoids loading full messages/XML)
-        let cursor = await index.openCursor(null, "prev") // newest first
-        while (cursor) {
-            const s = cursor.value
-            metadata.push({
-                id: s.id,
-                title: s.title,
-                createdAt: s.createdAt,
-                updatedAt: s.updatedAt,
-                messageCount: s.messages.length,
-                hasDiagram: !!s.diagramXml && s.diagramXml.trim().length > 0,
-                thumbnailDataUrl: s.thumbnailDataUrl,
-            })
-            cursor = await cursor.continue()
-        }
-        return metadata
+            // Use cursor to read only metadata fields (avoids loading full messages/XML)
+            let cursor = await index.openCursor(null, "prev") // newest first
+            while (cursor) {
+                const s = cursor.value
+                metadata.push({
+                    id: s.id,
+                    title: s.title,
+                    createdAt: s.createdAt,
+                    updatedAt: s.updatedAt,
+                    messageCount: s.messages.length,
+                    hasDiagram:
+                        !!s.diagramXml && s.diagramXml.trim().length > 0,
+                    thumbnailDataUrl: s.thumbnailDataUrl,
+                })
+                cursor = await cursor.continue()
+            }
+            return metadata
+        })
    } catch (error) {
        console.error("Failed to get session metadata:", error)
        return []
@@ -109,8 +154,9 @@ export async function getAllSessionMetadata(): Promise<SessionMetadata[]> {
 export async function getSession(id: string): Promise<ChatSession | null> {
    if (!isIndexedDBAvailable()) return null
    try {
-        const db = await getDB()
-        return (await db.get(STORE_NAME, id)) || null
+        return await withDB(async (db) => {
+            return (await db.get(STORE_NAME, id)) || null
+        })
    } catch (error) {
        console.error("Failed to get session:", error)
        return null
@@ -120,8 +166,9 @@ export async function getSession(id: string): Promise<ChatSession | null> {
 export async function saveSession(session: ChatSession): Promise<boolean> {
    if (!isIndexedDBAvailable()) return false
    try {
-        const db = await getDB()
-        await db.put(STORE_NAME, session)
+        await withDB(async (db) => {
+            await db.put(STORE_NAME, session)
+        })
        return true
    } catch (error) {
        // Handle quota exceeded
@@ -133,8 +180,9 @@ export async function saveSession(session: ChatSession): Promise<boolean> {
            await deleteOldestSession()
            // Retry once
            try {
-                const db = await getDB()
-                await db.put(STORE_NAME, session)
+                await withDB(async (db) => {
+                    await db.put(STORE_NAME, session)
+                })
                return true
            } catch (retryError) {
                console.error(
@@ -153,8 +201,9 @@ export async function saveSession(session: ChatSession): Promise<boolean> {
 export async function deleteSession(id: string): Promise<void> {
    if (!isIndexedDBAvailable()) return
    try {
-        const db = await getDB()
-        await db.delete(STORE_NAME, id)
+        await withDB(async (db) => {
+            await db.delete(STORE_NAME, id)
+        })
    } catch (error) {
        console.error("Failed to delete session:", error)
    }
@@ -163,8 +212,9 @@ export async function deleteSession(id: string): Promise<void> {
 export async function getSessionCount(): Promise<number> {
    if (!isIndexedDBAvailable()) return 0
    try {
-        const db = await getDB()
-        return await db.count(STORE_NAME)
+        return await withDB(async (db) => {
+            return await db.count(STORE_NAME)
+        })
    } catch (error) {
        console.error("Failed to get session count:", error)
        return 0
@@ -174,14 +224,15 @@ export async function getSessionCount(): Promise<number> {
 export async function deleteOldestSession(): Promise<void> {
    if (!isIndexedDBAvailable()) return
    try {
-        const db = await getDB()
-        const tx = db.transaction(STORE_NAME, "readwrite")
-        const index = tx.store.index("by-updated")
-        const cursor = await index.openCursor()
-        if (cursor) {
-            await cursor.delete()
-        }
-        await tx.done
+        await withDB(async (db) => {
+            const tx = db.transaction(STORE_NAME, "readwrite")
+            const index = tx.store.index("by-updated")
+            const cursor = await index.openCursor()
+            if (cursor) {
+                await cursor.delete()
+            }
+            await tx.done
+        })
    } catch (error) {
        console.error("Failed to delete oldest session:", error)
    }
--- a/lib/url-utils.ts
+++ b/lib/url-utils.ts
@@ -1,5 +1,4 @@
 import { z } from "zod"
-import { getApiEndpoint } from "@/lib/base-path"

 export interface UrlData {
    url: string
@@ -16,7 +15,7 @@ const UrlResponseSchema = z.object({
 })

 export async function extractUrlContent(url: string): Promise<UrlData> {
-    const response = await fetch(getApiEndpoint("/api/parse-url"), {
+    const response = await fetch("/api/parse-url", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ url }),
--- a/package-lock.json
+++ b/package-lock.json
--- a/tests/unit/ai-providers.test.ts
+++ b/tests/unit/ai-providers.test.ts
@@ -168,11 +168,6 @@ describe("supportsImageInput", () => {
        expect(supportsImageInput("moonshot/kimi-k2")).toBe(false)
    })

-    it("returns true for Kimi K2.5 models (supports vision)", () => {
-        expect(supportsImageInput("kimi-k2.5")).toBe(true)
-        expect(supportsImageInput("moonshotai/kimi-k2.5")).toBe(true)
-    })
-
    it("returns false for DeepSeek text models", () => {
        expect(supportsImageInput("deepseek-chat")).toBe(false)
        expect(supportsImageInput("deepseek-coder")).toBe(false)