chore: bump version to 0.4.1

The hasValidDiagramXml filter was deleting valid messages that had minor
XML issues. Error handling in handleDisplayChart now catches all errors,
so filtering is no longer needed - invalid XML just won't load the diagram
but the conversation is preserved.

README.md

@@ -85,9 +85,11 @@ Here are some example prompts and their generated diagrams:
 
 -   **LLM-Powered Diagram Creation**: Leverage Large Language Models to create and manipulate draw.io diagrams directly through natural language commands
 -   **Image-Based Diagram Replication**: Upload existing diagrams or images and have the AI replicate and enhance them automatically
+-   **PDF & Text File Upload**: Upload PDF documents and text files to extract content and generate diagrams from existing documents
+-   **AI Reasoning Display**: View the AI's thinking process for supported models (OpenAI o1/o3, Gemini, Claude, etc.)
 -   **Diagram History**: Comprehensive version control that tracks all changes, allowing you to view and restore previous versions of your diagrams before the AI editing.
 -   **Interactive Chat Interface**: Communicate with AI to refine your diagrams in real-time
--   **AWS Architecture Diagram Support**: Specialized support for generating AWS architecture diagrams
+-   **Cloud Architecture Diagram Support**: Specialized support for generating cloud architecture diagrams (AWS, GCP, Azure)
 -   **Animated Connectors**: Create dynamic and animated connectors between diagram elements for better visualization
 
 ## Getting Started
@@ -205,7 +207,7 @@ All providers except AWS Bedrock and OpenRouter support custom endpoints.
 
 **Model Requirements**: This task requires strong model capabilities for generating long-form text with strict formatting constraints (draw.io XML). Recommended models include Claude Sonnet 4.5, GPT-5.1, Gemini 3 Pro, and DeepSeek V3.2/R1.
 
-Note that `claude` series has trained on draw.io diagrams with cloud architecture logos like AWS, Azue, GCP. So if you want to create cloud architecture diagrams, this is the best choice.
+Note that `claude` series has trained on draw.io diagrams with cloud architecture logos like AWS, Azure, GCP. So if you want to create cloud architecture diagrams, this is the best choice.
 
 
 ## How It Works

app/api/chat/route.ts

@@ -3,10 +3,12 @@ import {
     convertToModelMessages,
     createUIMessageStream,
     createUIMessageStreamResponse,
+    InvalidToolInputError,
     LoadAPIKeyError,
     stepCountIs,
     streamText,
 } from "ai"
+import { jsonrepair } from "jsonrepair"
 import { z } from "zod"
 import { getAIModel, supportsPromptCaching } from "@/lib/ai-providers"
 import { findCachedResponse } from "@/lib/cached-responses"
@@ -18,7 +20,7 @@ import {
 } from "@/lib/langfuse"
 import { getSystemPrompt } from "@/lib/system-prompts"
 
-export const maxDuration = 300
+export const maxDuration = 120
 
 // File upload limits (must match client-side)
 const MAX_FILE_SIZE = 2 * 1024 * 1024 // 2MB
@@ -95,35 +97,6 @@ function replaceHistoricalToolInputs(messages: any[]): any[] {
     })
 }
 
-// Helper function to fix tool call inputs for Bedrock API
-// Bedrock requires toolUse.input to be a JSON object, not a string
-function fixToolCallInputs(messages: any[]): any[] {
-    return messages.map((msg) => {
-        if (msg.role !== "assistant" || !Array.isArray(msg.content)) {
-            return msg
-        }
-        const fixedContent = msg.content.map((part: any) => {
-            if (part.type === "tool-call") {
-                if (typeof part.input === "string") {
-                    try {
-                        const parsed = JSON.parse(part.input)
-                        return { ...part, input: parsed }
-                    } catch {
-                        // If parsing fails, wrap the string in an object
-                        return { ...part, input: { rawInput: part.input } }
-                    }
-                }
-                // Input is already an object, but verify it's not null/undefined
-                if (part.input === null || part.input === undefined) {
-                    return { ...part, input: {} }
-                }
-            }
-            return part
-        })
-        return { ...msg, content: fixedContent }
-    })
-}
-
 // Helper function to create cached stream response
 function createCachedStreamResponse(xml: string): Response {
     const toolCallId = `cached-${Date.now()}`
@@ -186,9 +159,9 @@ async function handleChatRequest(req: Request): Promise<Response> {
             : undefined
 
     // Extract user input text for Langfuse trace
-    const currentMessage = messages[messages.length - 1]
+    const lastMessage = messages[messages.length - 1]
     const userInputText =
-        currentMessage?.parts?.find((p: any) => p.type === "text")?.text || ""
+        lastMessage?.parts?.find((p: any) => p.type === "text")?.text || ""
 
     // Update Langfuse trace with input, session, and user
     setTraceInput({
@@ -229,6 +202,9 @@ async function handleChatRequest(req: Request): Promise<Response> {
         modelId: req.headers.get("x-ai-model"),
     }
 
+    // Read minimal style preference from header
+    const minimalStyle = req.headers.get("x-minimal-style") === "true"
+
     // Get AI model with optional client overrides
     const { model, providerOptions, headers, modelId } =
         getAIModel(clientOverrides)
@@ -240,13 +216,7 @@ async function handleChatRequest(req: Request): Promise<Response> {
     )
 
     // Get the appropriate system prompt based on model (extended for Opus/Haiku 4.5)
-    const systemMessage = getSystemPrompt(modelId)
+    const systemMessage = getSystemPrompt(modelId, minimalStyle)
-
-    const lastMessage = messages[messages.length - 1]
-
-    // Extract text from the last message parts
-    const lastMessageText =
-        lastMessage.parts?.find((part: any) => part.type === "text")?.text || ""
 
     // Extract file parts (images) from the last message
     const fileParts =
@@ -255,17 +225,19 @@ async function handleChatRequest(req: Request): Promise<Response> {
     // User input only - XML is now in a separate cached system message
     const formattedUserInput = `User input:
 """md
-${lastMessageText}
+${userInputText}
 """`
 
     // Convert UIMessages to ModelMessages and add system message
     const modelMessages = convertToModelMessages(messages)
 
-    // Fix tool call inputs for Bedrock API (requires JSON objects, not strings)
+    // Replace historical tool call XML with placeholders to reduce tokens
-    const fixedMessages = fixToolCallInputs(modelMessages)
+    // Disabled by default - some models (e.g. minimax) copy placeholders instead of generating XML
-
+    const enableHistoryReplace =
-    // Replace historical tool call XML with placeholders to reduce tokens and avoid confusion
+        process.env.ENABLE_HISTORY_XML_REPLACE === "true"
-    const placeholderMessages = replaceHistoricalToolInputs(fixedMessages)
+    const placeholderMessages = enableHistoryReplace
+        ? replaceHistoricalToolInputs(modelMessages)
+        : modelMessages
 
     // Filter out messages with empty content arrays (Bedrock API rejects these)
     // This is a safety measure - ideally convertToModelMessages should handle all cases
@@ -349,7 +321,35 @@ ${lastMessageText}
 
     const result = streamText({
         model,
+        ...(process.env.MAX_OUTPUT_TOKENS && {
+            maxOutputTokens: parseInt(process.env.MAX_OUTPUT_TOKENS, 10),
+        }),
         stopWhen: stepCountIs(5),
+        // Repair truncated tool calls when maxOutputTokens is reached mid-JSON
+        experimental_repairToolCall: async ({ toolCall, error }) => {
+            // Only attempt repair for invalid tool input (broken JSON from truncation)
+            if (
+                error instanceof InvalidToolInputError ||
+                error.name === "AI_InvalidToolInputError"
+            ) {
+                try {
+                    // Use jsonrepair to fix truncated JSON
+                    const repairedInput = jsonrepair(toolCall.input)
+                    console.log(
+                        `[repairToolCall] Repaired truncated JSON for tool: ${toolCall.toolName}`,
+                    )
+                    return { ...toolCall, input: repairedInput }
+                } catch (repairError) {
+                    console.warn(
+                        `[repairToolCall] Failed to repair JSON for tool: ${toolCall.toolName}`,
+                        repairError,
+                    )
+                    return null
+                }
+            }
+            // Don't attempt to repair other errors (like NoSuchToolError)
+            return null
+        },
         messages: allMessages,
         ...(providerOptions && { providerOptions }), // This now includes all reasoning configs
         ...(headers && { headers }),
@@ -360,32 +360,6 @@ ${lastMessageText}
                 userId,
             }),
         }),
-        // Repair malformed tool calls (model sometimes generates invalid JSON with unescaped quotes)
-        experimental_repairToolCall: async ({ toolCall }) => {
-            // The toolCall.input contains the raw JSON string that failed to parse
-            const rawJson =
-                typeof toolCall.input === "string" ? toolCall.input : null
-
-            if (rawJson) {
-                try {
-                    // Fix unescaped quotes: x="520" should be x=\"520\"
-                    const fixed = rawJson.replace(
-                        /([a-zA-Z])="(\d+)"/g,
-                        '$1=\\"$2\\"',
-                    )
-                    const parsed = JSON.parse(fixed)
-                    return {
-                        type: "tool-call" as const,
-                        toolCallId: toolCall.toolCallId,
-                        toolName: toolCall.toolName,
-                        input: JSON.stringify(parsed),
-                    }
-                } catch {
-                    // Repair failed, return null
-                }
-            }
-            return null
-        },
         onFinish: ({ text, usage }) => {
             // Pass usage to Langfuse (Bedrock streaming doesn't auto-report tokens to telemetry)
             setTraceOutput(text, {
@@ -396,36 +370,32 @@ ${lastMessageText}
         tools: {
             // Client-side tool that will be executed on the client
             display_diagram: {
-                description: `Display a diagram on draw.io. Pass the XML content inside <root> tags.
+                description: `Display a diagram on draw.io. Pass ONLY the mxCell elements - wrapper tags and root cells are added automatically.
 
 VALIDATION RULES (XML will be rejected if violated):
-1. All mxCell elements must be DIRECT children of <root> - never nested
+1. Generate ONLY mxCell elements - NO wrapper tags (<mxfile>, <mxGraphModel>, <root>)
-2. Every mxCell needs a unique id
+2. Do NOT include root cells (id="0" or id="1") - they are added automatically
-3. Every mxCell (except id="0") needs a valid parent attribute
+3. All mxCell elements must be siblings - never nested
-4. Edge source/target must reference existing cell IDs
+4. Every mxCell needs a unique id (start from "2")
-5. Escape special chars in values: &lt; &gt; &amp; &quot;
+5. Every mxCell needs a valid parent attribute (use "1" for top-level)
-6. Always start with: <mxCell id="0"/><mxCell id="1" parent="0"/>
+6. Escape special chars in values: &lt; &gt; &amp; &quot;
 
-Example with swimlanes and edges (note: all mxCells are siblings):
+Example (generate ONLY this - no wrapper tags):
-<root>
+<mxCell id="lane1" value="Frontend" style="swimlane;" vertex="1" parent="1">
-  <mxCell id="0"/>
+  <mxGeometry x="40" y="40" width="200" height="200" as="geometry"/>
-  <mxCell id="1" parent="0"/>
+</mxCell>
-  <mxCell id="lane1" value="Frontend" style="swimlane;" vertex="1" parent="1">
+<mxCell id="step1" value="Step 1" style="rounded=1;" vertex="1" parent="lane1">
-    <mxGeometry x="40" y="40" width="200" height="200" as="geometry"/>
+  <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="step1" value="Step 1" style="rounded=1;" vertex="1" parent="lane1">
+<mxCell id="lane2" value="Backend" style="swimlane;" vertex="1" parent="1">
-    <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
+  <mxGeometry x="280" y="40" width="200" height="200" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="lane2" value="Backend" style="swimlane;" vertex="1" parent="1">
+<mxCell id="step2" value="Step 2" style="rounded=1;" vertex="1" parent="lane2">
-    <mxGeometry x="280" y="40" width="200" height="200" as="geometry"/>
+  <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="step2" value="Step 2" style="rounded=1;" vertex="1" parent="lane2">
+<mxCell id="edge1" style="edgeStyle=orthogonalEdgeStyle;endArrow=classic;" edge="1" parent="1" source="step1" target="step2">
-    <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
+  <mxGeometry relative="1" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="edge1" style="edgeStyle=orthogonalEdgeStyle;endArrow=classic;" edge="1" parent="1" source="step1" target="step2">
-    <mxGeometry relative="1" as="geometry"/>
-  </mxCell>
-</root>
 
 Notes:
 - For AWS diagrams, use **AWS 2025 icons**.
@@ -467,6 +437,26 @@ IMPORTANT: Keep edits concise:
                         ),
                 }),
             },
+            append_diagram: {
+                description: `Continue generating diagram XML when previous display_diagram output was truncated due to length limits.
+
+WHEN TO USE: Only call this tool after display_diagram was truncated (you'll see an error message about truncation).
+
+CRITICAL INSTRUCTIONS:
+1. Do NOT include any wrapper tags - just continue the mxCell elements
+2. Continue from EXACTLY where your previous output stopped
+3. Complete the remaining mxCell elements
+4. If still truncated, call append_diagram again with the next fragment
+
+Example: If previous output ended with '<mxCell id="x" style="rounded=1', continue with ';" vertex="1">...' and complete the remaining elements.`,
+                inputSchema: z.object({
+                    xml: z
+                        .string()
+                        .describe(
+                            "Continuation XML fragment to append (NO wrapper tags)",
+                        ),
+                }),
+            },
         },
         ...(process.env.TEMPERATURE !== undefined && {
             temperature: parseFloat(process.env.TEMPERATURE),
@@ -491,6 +481,7 @@ IMPORTANT: Keep edits concise:
                 return {
                     inputTokens: totalInputTokens,
                     outputTokens: usage.outputTokens ?? 0,
+                    finishReason: (part as any).finishReason,
                 }
             }
             return undefined

app/api/chat/xml_guide.md

@@ -81,16 +81,15 @@ Contains the actual diagram data.
 
 ## Root Cell Container: `<root>`
 
-Contains all the cells in the diagram.
+Contains all the cells in the diagram. **Note:** When generating diagrams, you only need to provide the mxCell elements - the root container and root cells (id="0", id="1") are added automatically.
 
-**Example:**
+**Internal structure (auto-generated):**
 
 ```xml
 <root>
-<mxCell id="0"/>
+  <mxCell id="0"/>           <!-- Auto-added -->
-<mxCell id="1" parent="0"/>
+  <mxCell id="1" parent="0"/> <!-- Auto-added -->
-
+  <!-- Your mxCell elements go here (start from id="2") -->
-  <!-- Other cells go here -->
 </root>
 ```
 
@@ -203,15 +202,15 @@ Draw.io files contain two special cells that are always present:
 1.  **Root Cell** (id = "0"): The parent of all cells
 2.  **Default Parent Cell** (id = "1", parent = "0"): The default layer and parent for most cells
 
-## Tips for Manually Creating Draw.io XML
+## Tips for Creating Draw.io XML
 
-1.  Start with the basic structure (`mxfile`, `diagram`, `mxGraphModel`, `root`)
+1.  **Generate ONLY mxCell elements** - wrapper tags and root cells (id="0", id="1") are added automatically
-2.  Always include the two special cells (id = "0" and id = "1")
+2.  Start IDs from "2" (id="0" and id="1" are reserved for root cells)
 3.  Assign unique and sequential IDs to all cells
-4.  Define parent relationships correctly
+4.  Define parent relationships correctly (use parent="1" for top-level shapes)
 5.  Use `mxGeometry` elements to position shapes
 6.  For connectors, specify `source` and `target` attributes
-7.  **CRITICAL: All mxCell elements must be DIRECT children of `<root>`. NEVER nest mxCell inside another mxCell.**
+7.  **CRITICAL: All mxCell elements must be siblings. NEVER nest mxCell inside another mxCell.**
 
 ## Common Patterns
 

app/layout.tsx

@@ -1,5 +1,4 @@
 import { GoogleAnalytics } from "@next/third-parties/google"
-import { Analytics } from "@vercel/analytics/react"
 import type { Metadata, Viewport } from "next"
 import { JetBrains_Mono, Plus_Jakarta_Sans } from "next/font/google"
 import { DiagramProvider } from "@/contexts/diagram-context"
@@ -117,7 +116,6 @@ export default function RootLayout({
                 className={`${plusJakarta.variable} ${jetbrainsMono.variable} antialiased`}
             >
                 <DiagramProvider>{children}</DiagramProvider>
-                <Analytics />
             </body>
             {process.env.NEXT_PUBLIC_GA_ID && (
                 <GoogleAnalytics gaId={process.env.NEXT_PUBLIC_GA_ID} />

components/chat-input.tsx

@@ -17,7 +17,13 @@ import { HistoryDialog } from "@/components/history-dialog"
 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"
+import {
+    Tooltip,
+    TooltipContent,
+    TooltipTrigger,
+} from "@/components/ui/tooltip"
 import { useDiagram } from "@/contexts/diagram-context"
 import { isPdfFile, isTextFile } from "@/lib/pdf-utils"
 import { FilePreviewList } from "./file-preview-list"
@@ -129,6 +135,8 @@ interface ChatInputProps {
     onToggleHistory?: (show: boolean) => void
     sessionId?: string
     error?: Error | null
+    minimalStyle?: boolean
+    onMinimalStyleChange?: (value: boolean) => void
 }
 
 export function ChatInput({
@@ -144,6 +152,8 @@ export function ChatInput({
     onToggleHistory = () => {},
     sessionId,
     error = null,
+    minimalStyle = false,
+    onMinimalStyleChange = () => {},
 }: ChatInputProps) {
     const { diagramHistory, saveDiagramToFile } = useDiagram()
     const textareaRef = useRef<HTMLTextAreaElement>(null)
@@ -343,6 +353,32 @@ export function ChatInput({
                             showHistory={showHistory}
                             onToggleHistory={onToggleHistory}
                         />
+
+                        <Tooltip>
+                            <TooltipTrigger asChild>
+                                <div className="flex items-center gap-1.5">
+                                    <Switch
+                                        id="minimal-style"
+                                        checked={minimalStyle}
+                                        onCheckedChange={onMinimalStyleChange}
+                                        className="scale-75"
+                                    />
+                                    <label
+                                        htmlFor="minimal-style"
+                                        className={`text-xs cursor-pointer select-none ${
+                                            minimalStyle
+                                                ? "text-primary font-medium"
+                                                : "text-muted-foreground"
+                                        }`}
+                                    >
+                                        {minimalStyle ? "Minimal" : "Styled"}
+                                    </label>
+                                </div>
+                            </TooltipTrigger>
+                            <TooltipContent side="top">
+                                Use minimal for faster generation (no colors)
+                            </TooltipContent>
+                        </Tooltip>
                     </div>
 
                     {/* Right actions */}

components/chat-message-display.tsx

@@ -19,8 +19,10 @@ import {
     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"
+import { toast } from "sonner"
 import {
     Reasoning,
     ReasoningContent,
@@ -29,8 +31,9 @@ import {
 import { ScrollArea } from "@/components/ui/scroll-area"
 import {
     convertToLegalXml,
+    isMxCellXmlComplete,
     replaceNodes,
-    validateMxCellStructure,
+    validateAndFixXml,
 } from "@/lib/utils"
 import ExamplePanel from "./chat-example-panel"
 import { CodeBlock } from "./code-block"
@@ -169,6 +172,7 @@ interface ChatMessageDisplayProps {
     messages: UIMessage[]
     setInput: (input: string) => void
     setFiles: (files: File[]) => void
+    processedToolCallsRef: MutableRefObject<Set<string>>
     sessionId?: string
     onRegenerate?: (messageIndex: number) => void
     onEditMessage?: (messageIndex: number, newText: string) => void
@@ -179,6 +183,7 @@ export function ChatMessageDisplay({
     messages,
     setInput,
     setFiles,
+    processedToolCallsRef,
     sessionId,
     onRegenerate,
     onEditMessage,
@@ -187,7 +192,15 @@ export function ChatMessageDisplay({
     const { chartXML, loadDiagram: onDisplayChart } = useDiagram()
     const messagesEndRef = useRef<HTMLDivElement>(null)
     const previousXML = useRef<string>("")
-    const processedToolCalls = useRef<Set<string>>(new Set())
+    const processedToolCalls = processedToolCallsRef
+    // Track the last processed XML per toolCallId to skip redundant processing during streaming
+    const lastProcessedXmlRef = useRef<Map<string, string>>(new Map())
+    // Debounce streaming diagram updates - store pending XML and timeout
+    const pendingXmlRef = useRef<string | null>(null)
+    const debounceTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(
+        null,
+    )
+    const STREAMING_DEBOUNCE_MS = 150 // Only update diagram every 150ms during streaming
     const [expandedTools, setExpandedTools] = useState<Record<string, boolean>>(
         {},
     )
@@ -213,9 +226,32 @@ export function ChatMessageDisplay({
             setCopiedMessageId(messageId)
             setTimeout(() => setCopiedMessageId(null), 2000)
         } catch (err) {
-            console.error("Failed to copy message:", err)
+            // Fallback for non-secure contexts (HTTP) or permission denied
-            setCopyFailedMessageId(messageId)
+            const textarea = document.createElement("textarea")
-            setTimeout(() => setCopyFailedMessageId(null), 2000)
+            textarea.value = text
+            textarea.style.position = "fixed"
+            textarea.style.left = "-9999px"
+            textarea.style.opacity = "0"
+            document.body.appendChild(textarea)
+
+            try {
+                textarea.select()
+                const success = document.execCommand("copy")
+                if (!success) {
+                    throw new Error("Copy command failed")
+                }
+                setCopiedMessageId(messageId)
+                setTimeout(() => setCopiedMessageId(null), 2000)
+            } catch (fallbackErr) {
+                console.error("Failed to copy message:", fallbackErr)
+                toast.error(
+                    "Failed to copy message. Please copy manually or check clipboard permissions.",
+                )
+                setCopyFailedMessageId(messageId)
+                setTimeout(() => setCopyFailedMessageId(null), 2000)
+            } finally {
+                document.body.removeChild(textarea)
+            }
         }
     }
 
@@ -243,33 +279,100 @@ export function ChatMessageDisplay({
                 }),
             })
         } catch (error) {
-            console.warn("Failed to log feedback:", error)
+            console.error("Failed to log feedback:", error)
+            toast.error("Failed to record your feedback. Please try again.")
+            // Revert optimistic UI update
+            setFeedback((prev) => {
+                const next = { ...prev }
+                delete next[messageId]
+                return next
+            })
         }
     }
 
     const handleDisplayChart = useCallback(
-        (xml: string) => {
+        (xml: string, showToast = false) => {
+            console.time("perf:handleDisplayChart")
             const currentXml = xml || ""
             const convertedXml = convertToLegalXml(currentXml)
             if (convertedXml !== previousXML.current) {
-                // If chartXML is empty, create a default mxfile structure to use with replaceNodes
+                // Parse and validate XML BEFORE calling replaceNodes
-                // This ensures the XML is properly wrapped in mxfile/diagram/mxGraphModel format
+                console.time("perf:DOMParser")
-                const baseXML =
+                const parser = new DOMParser()
-                    chartXML ||
+                const testDoc = parser.parseFromString(convertedXml, "text/xml")
-                    `<mxfile><diagram name="Page-1" id="page-1"><mxGraphModel><root><mxCell id="0"/><mxCell id="1" parent="0"/></root></mxGraphModel></diagram></mxfile>`
+                console.timeEnd("perf:DOMParser")
-                const replacedXML = replaceNodes(baseXML, convertedXml)
+                const parseError = testDoc.querySelector("parsererror")
 
-                const validationError = validateMxCellStructure(replacedXML)
+                if (parseError) {
-                if (!validationError) {
+                    // Use console.warn instead of console.error to avoid triggering
-                    previousXML.current = convertedXml
+                    // Next.js dev mode error overlay for expected streaming states
-                    // Skip validation in loadDiagram since we already validated above
+                    // (partial XML during streaming is normal and will be fixed by subsequent updates)
-                    onDisplayChart(replacedXML, true)
+                    if (showToast) {
-                } else {
+                        // Only log as error and show toast if this is the final XML
-                    console.log(
+                        console.error(
-                        "[ChatMessageDisplay] XML validation failed:",
+                            "[ChatMessageDisplay] Malformed XML detected in final output",
-                        validationError,
+                        )
-                    )
+                        toast.error(
+                            "AI generated invalid diagram XML. Please try regenerating.",
+                        )
+                    }
+                    console.timeEnd("perf:handleDisplayChart")
+                    return // Skip this update
                 }
+
+                try {
+                    // If chartXML is empty, create a default mxfile structure to use with replaceNodes
+                    // This ensures the XML is properly wrapped in mxfile/diagram/mxGraphModel format
+                    const baseXML =
+                        chartXML ||
+                        `<mxfile><diagram name="Page-1" id="page-1"><mxGraphModel><root><mxCell id="0"/><mxCell id="1" parent="0"/></root></mxGraphModel></diagram></mxfile>`
+                    console.time("perf:replaceNodes")
+                    const replacedXML = replaceNodes(baseXML, convertedXml)
+                    console.timeEnd("perf:replaceNodes")
+
+                    // Validate and auto-fix the XML
+                    console.time("perf:validateAndFixXml")
+                    const validation = validateAndFixXml(replacedXML)
+                    console.timeEnd("perf:validateAndFixXml")
+                    if (validation.valid) {
+                        previousXML.current = convertedXml
+                        // Use fixed XML if available, otherwise use original
+                        const xmlToLoad = validation.fixed || replacedXML
+                        if (validation.fixes.length > 0) {
+                            console.log(
+                                "[ChatMessageDisplay] Auto-fixed XML issues:",
+                                validation.fixes,
+                            )
+                        }
+                        // Skip validation in loadDiagram since we already validated above
+                        onDisplayChart(xmlToLoad, true)
+                    } else {
+                        console.error(
+                            "[ChatMessageDisplay] XML validation failed:",
+                            validation.error,
+                        )
+                        // Only show toast if this is the final XML (not during streaming)
+                        if (showToast) {
+                            toast.error(
+                                "Diagram validation failed. Please try regenerating.",
+                            )
+                        }
+                    }
+                } catch (error) {
+                    console.error(
+                        "[ChatMessageDisplay] Error processing XML:",
+                        error,
+                    )
+                    // Only show toast if this is the final XML (not during streaming)
+                    if (showToast) {
+                        toast.error(
+                            "Failed to process diagram. Please try regenerating.",
+                        )
+                    }
+                }
+                console.timeEnd("perf:handleDisplayChart")
+            } else {
+                console.timeEnd("perf:handleDisplayChart")
             }
         },
         [chartXML, onDisplayChart],
@@ -288,7 +391,17 @@ export function ChatMessageDisplay({
     }, [editingMessageId])
 
     useEffect(() => {
-        messages.forEach((message) => {
+        console.time("perf:message-display-useEffect")
+        let processedCount = 0
+        let skippedCount = 0
+        let debouncedCount = 0
+
+        // Only process the last message for streaming performance
+        // Previous messages are already processed and won't change
+        const messagesToProcess =
+            messages.length > 0 ? [messages[messages.length - 1]] : []
+
+        messagesToProcess.forEach((message) => {
             if (message.parts) {
                 message.parts.forEach((part) => {
                     if (part.type?.startsWith("tool-")) {
@@ -307,23 +420,82 @@ export function ChatMessageDisplay({
                             input?.xml
                         ) {
                             const xml = input.xml as string
+
+                            // Skip if XML hasn't changed since last processing
+                            const lastXml =
+                                lastProcessedXmlRef.current.get(toolCallId)
+                            if (lastXml === xml) {
+                                skippedCount++
+                                return // Skip redundant processing
+                            }
+
                             if (
                                 state === "input-streaming" ||
                                 state === "input-available"
                             ) {
-                                handleDisplayChart(xml)
+                                // Debounce streaming updates - queue the XML and process after delay
+                                pendingXmlRef.current = xml
+
+                                if (!debounceTimeoutRef.current) {
+                                    // No pending timeout - set one up
+                                    debounceTimeoutRef.current = setTimeout(
+                                        () => {
+                                            const pendingXml =
+                                                pendingXmlRef.current
+                                            debounceTimeoutRef.current = null
+                                            pendingXmlRef.current = null
+                                            if (pendingXml) {
+                                                console.log(
+                                                    "perf:debounced-handleDisplayChart executing",
+                                                )
+                                                handleDisplayChart(
+                                                    pendingXml,
+                                                    false,
+                                                )
+                                                lastProcessedXmlRef.current.set(
+                                                    toolCallId,
+                                                    pendingXml,
+                                                )
+                                            }
+                                        },
+                                        STREAMING_DEBOUNCE_MS,
+                                    )
+                                }
+                                debouncedCount++
                             } else if (
                                 state === "output-available" &&
                                 !processedToolCalls.current.has(toolCallId)
                             ) {
-                                handleDisplayChart(xml)
+                                // Final output - process immediately (clear any pending debounce)
+                                if (debounceTimeoutRef.current) {
+                                    clearTimeout(debounceTimeoutRef.current)
+                                    debounceTimeoutRef.current = null
+                                    pendingXmlRef.current = null
+                                }
+                                // Show toast only if final XML is malformed
+                                handleDisplayChart(xml, true)
                                 processedToolCalls.current.add(toolCallId)
+                                // Clean up the ref entry - tool is complete, no longer needed
+                                lastProcessedXmlRef.current.delete(toolCallId)
+                                processedCount++
                             }
                         }
                     }
                 })
             }
         })
+        console.log(
+            `perf:message-display-useEffect processed=${processedCount} skipped=${skippedCount} debounced=${debouncedCount}`,
+        )
+        console.timeEnd("perf:message-display-useEffect")
+
+        // Cleanup: clear any pending debounce timeout on unmount
+        return () => {
+            if (debounceTimeoutRef.current) {
+                clearTimeout(debounceTimeoutRef.current)
+                debounceTimeoutRef.current = null
+            }
+        }
     }, [messages, handleDisplayChart])
 
     const renderToolPart = (part: ToolPartLike) => {
@@ -373,11 +545,23 @@ export function ChatMessageDisplay({
                                 Complete
                             </span>
                         )}
-                        {state === "output-error" && (
+                        {state === "output-error" &&
-                            <span className="text-xs font-medium text-red-600 bg-red-50 px-2 py-0.5 rounded-full">
+                            (() => {
-                                Error
+                                // Check if this is a truncation (incomplete XML) vs real error
-                            </span>
+                                const isTruncated =
-                        )}
+                                    (toolName === "display_diagram" ||
+                                        toolName === "append_diagram") &&
+                                    !isMxCellXmlComplete(input?.xml)
+                                return isTruncated ? (
+                                    <span className="text-xs font-medium text-yellow-600 bg-yellow-50 px-2 py-0.5 rounded-full">
+                                        Truncated
+                                    </span>
+                                ) : (
+                                    <span className="text-xs font-medium text-red-600 bg-red-50 px-2 py-0.5 rounded-full">
+                                        Error
+                                    </span>
+                                )
+                            })()}
                         {input && Object.keys(input).length > 0 && (
                             <button
                                 type="button"
@@ -410,11 +594,23 @@ export function ChatMessageDisplay({
                         ) : null}
                     </div>
                 )}
-                {output && state === "output-error" && (
+                {output &&
-                    <div className="px-4 py-3 border-t border-border/40 text-sm text-red-600">
+                    state === "output-error" &&
-                        {output}
+                    (() => {
-                    </div>
+                        const isTruncated =
-                )}
+                            (toolName === "display_diagram" ||
+                                toolName === "append_diagram") &&
+                            !isMxCellXmlComplete(input?.xml)
+                        return (
+                            <div
+                                className={`px-4 py-3 border-t border-border/40 text-sm ${isTruncated ? "text-yellow-600" : "text-red-600"}`}
+                            >
+                                {isTruncated
+                                    ? "Output truncated due to length limits. Try a simpler request or increase the maxOutputLength."
+                                    : output}
+                            </div>
+                        )
+                    })()}
             </div>
         )
     }

contexts/diagram-context.tsx

@@ -5,7 +5,7 @@ import { createContext, useContext, useRef, useState } from "react"
 import type { DrawIoEmbedRef } from "react-drawio"
 import { STORAGE_DIAGRAM_XML_KEY } from "@/components/chat-panel"
 import type { ExportFormat } from "@/components/save-dialog"
-import { extractDiagramXML, validateMxCellStructure } from "../lib/utils"
+import { extractDiagramXML, validateAndFixXml } from "../lib/utils"
 
 interface DiagramContextType {
     chartXML: string
@@ -86,24 +86,44 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
         chart: string,
         skipValidation?: boolean,
     ): string | null => {
+        console.time("perf:loadDiagram")
+        let xmlToLoad = chart
+
         // Validate XML structure before loading (unless skipped for internal use)
         if (!skipValidation) {
-            const validationError = validateMxCellStructure(chart)
+            console.time("perf:loadDiagram-validation")
-            if (validationError) {
+            const validation = validateAndFixXml(chart)
-                console.warn("[loadDiagram] Validation error:", validationError)
+            console.timeEnd("perf:loadDiagram-validation")
-                return validationError
+            if (!validation.valid) {
+                console.warn(
+                    "[loadDiagram] Validation error:",
+                    validation.error,
+                )
+                console.timeEnd("perf:loadDiagram")
+                return validation.error
+            }
+            // Use fixed XML if auto-fix was applied
+            if (validation.fixed) {
+                console.log(
+                    "[loadDiagram] Auto-fixed XML issues:",
+                    validation.fixes,
+                )
+                xmlToLoad = validation.fixed
             }
         }
 
         // Keep chartXML in sync even when diagrams are injected (e.g., display_diagram tool)
-        setChartXML(chart)
+        setChartXML(xmlToLoad)
 
         if (drawioRef.current) {
+            console.time("perf:drawio-iframe-load")
             drawioRef.current.load({
-                xml: chart,
+                xml: xmlToLoad,
             })
+            console.timeEnd("perf:drawio-iframe-load")
         }
 
+        console.timeEnd("perf:loadDiagram")
         return null
     }
 
@@ -125,14 +145,20 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
         setLatestSvg(data.data)
 
         // Only add to history if this was a user-initiated export
+        // Limit to 20 entries to prevent memory leaks during long sessions
+        const MAX_HISTORY_SIZE = 20
         if (expectHistoryExportRef.current) {
-            setDiagramHistory((prev) => [
+            setDiagramHistory((prev) => {
-                ...prev,
+                const newHistory = [
-                {
+                    ...prev,
-                    svg: data.data,
+                    {
-                    xml: extractedXML,
+                        svg: data.data,
-                },
+                        xml: extractedXML,
-            ])
+                    },
+                ]
+                // Keep only the last MAX_HISTORY_SIZE entries (circular buffer)
+                return newHistory.slice(-MAX_HISTORY_SIZE)
+            })
             expectHistoryExportRef.current = false
         }
 

docs/README_CN.md

@@ -81,9 +81,11 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
 
 -   **LLM驱动的图表创建**：利用大语言模型通过自然语言命令直接创建和操作draw.io图表
 -   **基于图像的图表复制**：上传现有图表或图像，让AI自动复制和增强
+-   **PDF和文本文件上传**：上传PDF文档和文本文件，提取内容并从现有文档生成图表
+-   **AI推理过程显示**：查看支持模型的AI思考过程（OpenAI o1/o3、Gemini、Claude等）
 -   **图表历史记录**：全面的版本控制，跟踪所有更改，允许您查看和恢复AI编辑前的图表版本
 -   **交互式聊天界面**：与AI实时对话来完善您的图表
--   **AWS架构图支持**：专门支持生成AWS架构图
+-   **云架构图支持**：专门支持生成云架构图（AWS、GCP、Azure）
 -   **动画连接器**：在图表元素之间创建动态动画连接器，实现更好的可视化效果
 
 ## 快速开始

docs/README_JA.md

@@ -81,9 +81,11 @@ https://github.com/user-attachments/assets/b2eef5f3-b335-4e71-a755-dc2e80931979
 
 -   **LLM搭載のダイアグラム作成**：大規模言語モデルを活用して、自然言語コマンドで直接draw.ioダイアグラムを作成・操作
 -   **画像ベースのダイアグラム複製**：既存のダイアグラムや画像をアップロードし、AIが自動的に複製・強化
+-   **PDFとテキストファイルのアップロード**：PDFドキュメントやテキストファイルをアップロードして、既存のドキュメントからコンテンツを抽出し、ダイアグラムを生成
+-   **AI推論プロセス表示**：サポートされているモデル（OpenAI o1/o3、Gemini、Claudeなど）のAIの思考プロセスを表示
 -   **ダイアグラム履歴**：すべての変更を追跡する包括的なバージョン管理。AI編集前のダイアグラムの以前のバージョンを表示・復元可能
 -   **インタラクティブなチャットインターフェース**：AIとリアルタイムでコミュニケーションしてダイアグラムを改善
--   **AWSアーキテクチャダイアグラムサポート**：AWSアーキテクチャダイアグラムの生成を専門的にサポート
+-   **クラウドアーキテクチャダイアグラムサポート**：クラウドアーキテクチャダイアグラムの生成を専門的にサポート（AWS、GCP、Azure）
 -   **アニメーションコネクタ**：より良い可視化のためにダイアグラム要素間に動的でアニメーション化されたコネクタを作成
 
 ## はじめに

docs/ai-providers.md

@@ -80,13 +80,23 @@ SILICONFLOW_BASE_URL=https://api.siliconflow.com/v1  # or https://api.siliconflo
 
 ```bash
 AZURE_API_KEY=your_api_key
+AZURE_RESOURCE_NAME=your-resource-name  # Required: your Azure resource name
 AI_MODEL=your-deployment-name
 ```
 
-Optional custom endpoint:
+Or use a custom endpoint instead of resource name:
 
 ```bash
-AZURE_BASE_URL=https://your-resource.openai.azure.com
+AZURE_API_KEY=your_api_key
+AZURE_BASE_URL=https://your-resource.openai.azure.com  # Alternative to AZURE_RESOURCE_NAME
+AI_MODEL=your-deployment-name
+```
+
+Optional reasoning configuration:
+
+```bash
+AZURE_REASONING_EFFORT=low      # Optional: low, medium, high
+AZURE_REASONING_SUMMARY=detailed  # Optional: none, brief, detailed
 ```
 
 ### AWS Bedrock

env.example

@@ -41,9 +41,13 @@ AI_MODEL=global.anthropic.claude-sonnet-4-5-20250929-v1:0
 # GOOGLE_THINKING_LEVEL=high                 # Optional: Gemini 3 thinking level (low/high)
 
 # Azure OpenAI Configuration
+# Configure endpoint using ONE of these methods:
+#   1. AZURE_RESOURCE_NAME - SDK constructs: https://{name}.openai.azure.com/openai/v1{path}
+#   2. AZURE_BASE_URL - SDK appends /v1{path} to your URL
+# If both are set, AZURE_BASE_URL takes precedence.
 # AZURE_RESOURCE_NAME=your-resource-name
 # AZURE_API_KEY=...
-# AZURE_BASE_URL=https://your-resource.openai.azure.com  # Optional: Custom endpoint (overrides resourceName)
+# AZURE_BASE_URL=https://your-resource.openai.azure.com/openai  # Alternative: Custom endpoint
 # AZURE_REASONING_EFFORT=low                 # Optional: Azure reasoning effort (low, medium, high)
 # AZURE_REASONING_SUMMARY=detailed
 
@@ -86,3 +90,4 @@ AI_MODEL=global.anthropic.claude-sonnet-4-5-20250929-v1:0
 # Enable PDF file upload to extract text and generate diagrams
 # Enabled by default. Set to "false" to disable.
 # ENABLE_PDF_INPUT=true
+# NEXT_PUBLIC_MAX_EXTRACTED_CHARS=150000  # Max characters for PDF/text extraction (default: 150000)

lib/ai-config.ts

@@ -0,0 +1,26 @@
+import { STORAGE_KEYS } from "./storage"
+
+/**
+ * Get AI configuration from localStorage.
+ * Returns API keys and settings for custom AI providers.
+ * Used to override server defaults when user provides their own API key.
+ */
+export function getAIConfig() {
+    if (typeof window === "undefined") {
+        return {
+            accessCode: "",
+            aiProvider: "",
+            aiBaseUrl: "",
+            aiApiKey: "",
+            aiModel: "",
+        }
+    }
+
+    return {
+        accessCode: localStorage.getItem(STORAGE_KEYS.accessCode) || "",
+        aiProvider: localStorage.getItem(STORAGE_KEYS.aiProvider) || "",
+        aiBaseUrl: localStorage.getItem(STORAGE_KEYS.aiBaseUrl) || "",
+        aiApiKey: localStorage.getItem(STORAGE_KEYS.aiApiKey) || "",
+        aiModel: localStorage.getItem(STORAGE_KEYS.aiModel) || "",
+    }
+}

lib/ai-providers.ts

@@ -371,7 +371,16 @@ function detectProvider(): ProviderName | null {
             continue
         }
         if (process.env[envVar]) {
-            configuredProviders.push(provider as ProviderName)
+            // Azure requires additional config (baseURL or resourceName)
+            if (provider === "azure") {
+                const hasBaseUrl = !!process.env.AZURE_BASE_URL
+                const hasResourceName = !!process.env.AZURE_RESOURCE_NAME
+                if (hasBaseUrl || hasResourceName) {
+                    configuredProviders.push(provider as ProviderName)
+                }
+            } else {
+                configuredProviders.push(provider as ProviderName)
+            }
         }
     }
 
@@ -393,6 +402,18 @@ function validateProviderCredentials(provider: ProviderName): void {
                 `Please set it in your .env.local file.`,
         )
     }
+
+    // Azure requires either AZURE_BASE_URL or AZURE_RESOURCE_NAME in addition to API key
+    if (provider === "azure") {
+        const hasBaseUrl = !!process.env.AZURE_BASE_URL
+        const hasResourceName = !!process.env.AZURE_RESOURCE_NAME
+        if (!hasBaseUrl && !hasResourceName) {
+            throw new Error(
+                `Azure requires either AZURE_BASE_URL or AZURE_RESOURCE_NAME to be set. ` +
+                    `Please set one in your .env.local file.`,
+            )
+        }
+    }
 }
 
 /**
@@ -572,10 +593,15 @@ export function getAIModel(overrides?: ClientOverrides): ModelConfig {
         case "azure": {
             const apiKey = overrides?.apiKey || process.env.AZURE_API_KEY
             const baseURL = overrides?.baseUrl || process.env.AZURE_BASE_URL
-            if (baseURL || overrides?.apiKey) {
+            const resourceName = process.env.AZURE_RESOURCE_NAME
+            // Azure requires either baseURL or resourceName to construct the endpoint
+            // resourceName constructs: https://{resourceName}.openai.azure.com/openai/v1{path}
+            if (baseURL || resourceName || overrides?.apiKey) {
                 const customAzure = createAzure({
                     apiKey,
+                    // baseURL takes precedence over resourceName per SDK behavior
                     ...(baseURL && { baseURL }),
+                    ...(!baseURL && resourceName && { resourceName }),
                 })
                 model = customAzure(modelId)
             } else {

lib/cached-responses.ts

@@ -9,12 +9,7 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
         promptText:
             "Give me a **animated connector** diagram of transformer's architecture",
         hasImage: false,
-        xml: `<root>
+        xml: `<mxCell id="title" value="Transformer Architecture" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=20;fontStyle=1;" vertex="1" parent="1">
-  <mxCell id="0"/>
-  <mxCell id="1" parent="0"/>
-
-
-  <mxCell id="title" value="Transformer Architecture" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=20;fontStyle=1;" vertex="1" parent="1">
     <mxGeometry x="300" y="20" width="250" height="30" as="geometry"/>
   </mxCell>
 
@@ -254,18 +249,12 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
 
   <mxCell id="output_label" value="Outputs&#xa;(shifted right)" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=12;fontStyle=1;" vertex="1" parent="1">
     <mxGeometry x="660" y="530" width="100" height="30" as="geometry"/>
-  </mxCell>
+  </mxCell>`,
-</root>`,
     },
     {
         promptText: "Replicate this in aws style",
         hasImage: true,
-        xml: `<root>
+        xml: `<mxCell id="2" value="AWS" style="sketch=0;outlineConnect=0;gradientColor=none;html=1;whiteSpace=wrap;fontSize=12;fontStyle=0;container=1;pointerEvents=0;collapsible=0;recursiveResize=0;shape=mxgraph.aws4.group;grIcon=mxgraph.aws4.group_aws_cloud;strokeColor=#232F3E;fillColor=none;verticalAlign=top;align=left;spacingLeft=30;fontColor=#232F3E;dashed=0;rounded=1;arcSize=5;" vertex="1" parent="1">
-  <mxCell id="0"/>
-  <mxCell id="1" parent="0"/>
-
-
-  <mxCell id="2" value="AWS" style="sketch=0;outlineConnect=0;gradientColor=none;html=1;whiteSpace=wrap;fontSize=12;fontStyle=0;container=1;pointerEvents=0;collapsible=0;recursiveResize=0;shape=mxgraph.aws4.group;grIcon=mxgraph.aws4.group_aws_cloud;strokeColor=#232F3E;fillColor=none;verticalAlign=top;align=left;spacingLeft=30;fontColor=#232F3E;dashed=0;rounded=1;arcSize=5;" vertex="1" parent="1">
     <mxGeometry x="340" y="40" width="880" height="520" as="geometry"/>
   </mxCell>
 
@@ -324,18 +313,12 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
       <mxPoint x="700" y="350" as="sourcePoint"/>
       <mxPoint x="750" y="300" as="targetPoint"/>
     </mxGeometry>
-  </mxCell>
+  </mxCell>`,
-</root>`,
     },
     {
         promptText: "Replicate this flowchart.",
         hasImage: true,
-        xml: `<root>
+        xml: `<mxCell id="2" value="Lamp doesn't work" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#ffcccc;strokeColor=#000000;strokeWidth=2;fontSize=18;fontStyle=0;" vertex="1" parent="1">
-  <mxCell id="0"/>
-  <mxCell id="1" parent="0"/>
-
-
-  <mxCell id="2" value="Lamp doesn't work" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#ffcccc;strokeColor=#000000;strokeWidth=2;fontSize=18;fontStyle=0;" vertex="1" parent="1">
     <mxGeometry x="140" y="40" width="180" height="60" as="geometry"/>
   </mxCell>
 
@@ -391,16 +374,12 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
 
   <mxCell id="12" value="Repair lamp" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#99ff99;strokeColor=#000000;strokeWidth=2;fontSize=18;fontStyle=0;" vertex="1" parent="1">
     <mxGeometry x="130" y="650" width="200" height="60" as="geometry"/>
-  </mxCell>
+  </mxCell>`,
-</root>`,
     },
     {
         promptText: "Summarize this paper as a diagram",
         hasImage: true,
-        xml: `            <root>
+        xml: `<mxCell id="title_bg" parent="1"
-                <mxCell id="0" />
-                <mxCell id="1" parent="0" />
-                <mxCell id="title_bg" parent="1"
                     style="rounded=1;whiteSpace=wrap;html=1;fillColor=#1a237e;strokeColor=none;arcSize=8;"
                     value="" vertex="1">
                     <mxGeometry height="80" width="720" x="40" y="20" as="geometry" />
@@ -751,18 +730,12 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
                     value="Foundational technique for modern LLM reasoning - inspired many follow-up works including Self-Consistency, Tree-of-Thought, etc."
                     vertex="1">
                     <mxGeometry height="55" width="230" x="530" y="600" as="geometry" />
-                </mxCell>
+                </mxCell>`,
-            </root>`,
     },
     {
         promptText: "Draw a cat for me",
         hasImage: false,
-        xml: `<root>
+        xml: `<mxCell id="2" value="" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fillColor=#FFE6CC;strokeColor=#000000;strokeWidth=2;" vertex="1" parent="1">
-  <mxCell id="0"/>
-  <mxCell id="1" parent="0"/>
-
-
-  <mxCell id="2" value="" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fillColor=#FFE6CC;strokeColor=#000000;strokeWidth=2;" vertex="1" parent="1">
     <mxGeometry x="300" y="150" width="120" height="120" as="geometry"/>
   </mxCell>
 
@@ -902,9 +875,7 @@ export const CACHED_EXAMPLE_RESPONSES: CachedResponse[] = [
         <mxPoint x="235" y="290"/>
       </Array>
     </mxGeometry>
-  </mxCell>
+  </mxCell>`,
-
-</root>`,
     },
 ]
 

lib/pdf-utils.ts

@@ -1,7 +1,10 @@
 import { extractText, getDocumentProxy } from "unpdf"
 
-// Maximum characters allowed for extracted text
+// Maximum characters allowed for extracted text (configurable via env)
-export const MAX_EXTRACTED_CHARS = 150000 // 150k chars
+const DEFAULT_MAX_EXTRACTED_CHARS = 150000 // 150k chars
+export const MAX_EXTRACTED_CHARS =
+    Number(process.env.NEXT_PUBLIC_MAX_EXTRACTED_CHARS) ||
+    DEFAULT_MAX_EXTRACTED_CHARS
 
 // Text file extensions we support
 const TEXT_EXTENSIONS = [

lib/storage.ts

@@ -0,0 +1,27 @@
+// Centralized localStorage keys
+// Consolidates all storage keys from chat-panel.tsx and settings-dialog.tsx
+
+export const STORAGE_KEYS = {
+    // Chat data
+    messages: "next-ai-draw-io-messages",
+    xmlSnapshots: "next-ai-draw-io-xml-snapshots",
+    diagramXml: "next-ai-draw-io-diagram-xml",
+    sessionId: "next-ai-draw-io-session-id",
+
+    // Quota tracking
+    requestCount: "next-ai-draw-io-request-count",
+    requestDate: "next-ai-draw-io-request-date",
+    tokenCount: "next-ai-draw-io-token-count",
+    tokenDate: "next-ai-draw-io-token-date",
+    tpmCount: "next-ai-draw-io-tpm-count",
+    tpmMinute: "next-ai-draw-io-tpm-minute",
+
+    // Settings
+    accessCode: "next-ai-draw-io-access-code",
+    closeProtection: "next-ai-draw-io-close-protection",
+    accessCodeRequired: "next-ai-draw-io-access-code-required",
+    aiProvider: "next-ai-draw-io-ai-provider",
+    aiBaseUrl: "next-ai-draw-io-ai-base-url",
+    aiApiKey: "next-ai-draw-io-ai-api-key",
+    aiModel: "next-ai-draw-io-ai-model",
+} as const

lib/system-prompts.ts

@@ -42,11 +42,18 @@ description: Edit specific parts of the EXISTING diagram. Use this when making s
 parameters: {
   edits: Array<{search: string, replace: string}>
 }
+---Tool3---
+tool name: append_diagram
+description: Continue generating diagram XML when display_diagram was truncated due to output length limits. Only use this after display_diagram truncation.
+parameters: {
+  xml: string  // Continuation fragment (NO wrapper tags like <mxGraphModel> or <root>)
+}
 ---End of tools---
 
 IMPORTANT: Choose the right tool:
 - Use display_diagram for: Creating new diagrams, major restructuring, or when the current diagram XML is empty
 - Use edit_diagram for: Small modifications, adding/removing elements, changing text/colors, repositioning items
+- Use append_diagram for: ONLY when display_diagram was truncated due to output length - continue generating from where you stopped
 
 Core capabilities:
 - Generate valid, well-formed XML strings for draw.io diagrams
@@ -97,22 +104,21 @@ When using edit_diagram tool:
 
 ## Draw.io XML Structure Reference
 
-Basic structure:
+**IMPORTANT:** You only generate the mxCell elements. The wrapper structure and root cells (id="0", id="1") are added automatically.
+
+Example - generate ONLY this:
 \`\`\`xml
-<mxGraphModel>
+<mxCell id="2" value="Label" style="rounded=1;" vertex="1" parent="1">
-  <root>
+  <mxGeometry x="100" y="100" width="120" height="60" as="geometry"/>
-    <mxCell id="0"/>
+</mxCell>
-    <mxCell id="1" parent="0"/>
-  </root>
-</mxGraphModel>
 \`\`\`
-Note: All other mxCell elements go as siblings after id="1".
 
 CRITICAL RULES:
-1. Always include the two root cells: <mxCell id="0"/> and <mxCell id="1" parent="0"/>
+1. Generate ONLY mxCell elements - NO wrapper tags (<mxfile>, <mxGraphModel>, <root>)
-2. ALL mxCell elements must be DIRECT children of <root> - NEVER nest mxCell inside another mxCell
+2. Do NOT include root cells (id="0" or id="1") - they are added automatically
-3. Use unique sequential IDs for all cells (start from "2" for user content)
+3. ALL mxCell elements must be siblings - NEVER nest mxCell inside another mxCell
-4. Set parent="1" for top-level shapes, or parent="<container-id>" for grouped elements
+4. Use unique sequential IDs starting from "2"
+5. Set parent="1" for top-level shapes, or parent="<container-id>" for grouped elements
 
 Shape (vertex) example:
 \`\`\`xml
@@ -126,12 +132,90 @@ Connector (edge) example:
 <mxCell id="3" style="endArrow=classic;html=1;" edge="1" parent="1" source="2" target="4">
   <mxGeometry relative="1" as="geometry"/>
 </mxCell>
+
+### Edge Routing Rules:
+When creating edges/connectors, you MUST follow these rules to avoid overlapping lines:
+
+**Rule 1: NEVER let multiple edges share the same path**
+- If two edges connect the same pair of nodes, they MUST exit/enter at DIFFERENT positions
+- Use exitY=0.3 for first edge, exitY=0.7 for second edge (NOT both 0.5)
+
+**Rule 2: For bidirectional connections (A↔B), use OPPOSITE sides**
+- A→B: exit from RIGHT side of A (exitX=1), enter LEFT side of B (entryX=0)
+- B→A: exit from LEFT side of B (exitX=0), enter RIGHT side of A (entryX=1)
+
+**Rule 3: Always specify exitX, exitY, entryX, entryY explicitly**
+- Every edge MUST have these 4 attributes set in the style
+- Example: style="edgeStyle=orthogonalEdgeStyle;exitX=1;exitY=0.3;entryX=0;entryY=0.3;endArrow=classic;"
+
+**Rule 4: Route edges AROUND intermediate shapes (obstacle avoidance) - CRITICAL!**
+- Before creating an edge, identify ALL shapes positioned between source and target
+- If any shape is in the direct path, you MUST use waypoints to route around it
+- For DIAGONAL connections: route along the PERIMETER (outside edge) of the diagram, NOT through the middle
+- Add 20-30px clearance from shape boundaries when calculating waypoint positions
+- Route ABOVE (lower y), BELOW (higher y), or to the SIDE of obstacles
+- NEVER draw a line that visually crosses over another shape's bounding box
+
+**Rule 5: Plan layout strategically BEFORE generating XML**
+- Organize shapes into visual layers/zones (columns or rows) based on diagram flow
+- Space shapes 150-200px apart to create clear routing channels for edges
+- Mentally trace each edge: "What shapes are between source and target?"
+- Prefer layouts where edges naturally flow in one direction (left-to-right or top-to-bottom)
+
+**Rule 6: Use multiple waypoints for complex routing**
+- One waypoint is often not enough - use 2-3 waypoints to create proper L-shaped or U-shaped paths
+- Each direction change needs a waypoint (corner point)
+- Waypoints should form clear horizontal/vertical segments (orthogonal routing)
+- Calculate positions by: (1) identify obstacle boundaries, (2) add 20-30px margin
+
+**Rule 7: Choose NATURAL connection points based on flow direction**
+- NEVER use corner connections (e.g., entryX=1,entryY=1) - they look unnatural
+- For TOP-TO-BOTTOM flow: exit from bottom (exitY=1), enter from top (entryY=0)
+- For LEFT-TO-RIGHT flow: exit from right (exitX=1), enter from left (entryX=0)
+- For DIAGONAL connections: use the side closest to the target, not corners
+- Example: Node below-right of source → exit from bottom (exitY=1) OR right (exitX=1), not corner
+
+**Before generating XML, mentally verify:**
+1. "Do any edges cross over shapes that aren't their source/target?" → If yes, add waypoints
+2. "Do any two edges share the same path?" → If yes, adjust exit/entry points
+3. "Are any connection points at corners (both X and Y are 0 or 1)?" → If yes, use edge centers instead
+4. "Could I rearrange shapes to reduce edge crossings?" → If yes, revise layout
+
+
 \`\`\`
 
+`
+
+// Style instructions - only included when minimalStyle is false
+const STYLE_INSTRUCTIONS = `
 Common styles:
 - Shapes: rounded=1 (rounded corners), fillColor=#hex, strokeColor=#hex
 - Edges: endArrow=classic/block/open/none, startArrow=none/classic, curved=1, edgeStyle=orthogonalEdgeStyle
 - Text: fontSize=14, fontStyle=1 (bold), align=center/left/right
+`
+
+// Minimal style instruction - skip styling and focus on layout (prepended to prompt for emphasis)
+const MINIMAL_STYLE_INSTRUCTION = `
+## ⚠️ MINIMAL STYLE MODE ACTIVE ⚠️
+
+### No Styling - Plain Black/White Only
+- NO fillColor, NO strokeColor, NO rounded, NO fontSize, NO fontStyle
+- NO color attributes (no hex colors like #ff69b4)
+- Style: "whiteSpace=wrap;html=1;" for shapes, "html=1;endArrow=classic;" for edges
+- IGNORE all color/style examples below
+
+### Container/Group Shapes - MUST be Transparent
+- For container shapes (boxes that contain other shapes): use "fillColor=none;" to make background transparent
+- This prevents containers from covering child elements
+- Example: style="whiteSpace=wrap;html=1;fillColor=none;" for container rectangles
+
+### Focus on Layout Quality
+Since we skip styling, STRICTLY follow the "Edge Routing Rules" section below:
+- SPACING: Minimum 50px gap between all elements
+- NO OVERLAPS: Elements and edges must never overlap
+- Follow ALL 7 Edge Routing Rules for arrow positioning
+- Use waypoints to route edges AROUND obstacles
+- Use different exitY/entryY values for multiple edges between same nodes
 
 `
 
@@ -144,36 +228,44 @@ const EXTENDED_ADDITIONS = `
 ### display_diagram Details
 
 **VALIDATION RULES** (XML will be rejected if violated):
-1. All mxCell elements must be DIRECT children of <root> - never nested inside other mxCell elements
+1. Generate ONLY mxCell elements - wrapper tags and root cells are added automatically
-2. Every mxCell needs a unique id attribute
+2. All mxCell elements must be siblings - never nested inside other mxCell elements
-3. Every mxCell (except id="0") needs a valid parent attribute referencing an existing cell
+3. Every mxCell needs a unique id attribute (start from "2")
-4. Edge source/target attributes must reference existing cell IDs
+4. Every mxCell needs a valid parent attribute (use "1" for top-level, or container-id for grouped)
-5. Escape special characters in values: &lt; for <, &gt; for >, &amp; for &, &quot; for "
+5. Edge source/target attributes must reference existing cell IDs
-6. Always start with the two root cells: <mxCell id="0"/><mxCell id="1" parent="0"/>
+6. Escape special characters in values: &lt; for <, &gt; for >, &amp; for &, &quot; for "
 
-**Example with swimlanes and edges** (note: all mxCells are siblings under <root>):
+**Example with swimlanes and edges** (generate ONLY this - no wrapper tags):
 \`\`\`xml
-<root>
+<mxCell id="lane1" value="Frontend" style="swimlane;" vertex="1" parent="1">
-  <mxCell id="0"/>
+  <mxGeometry x="40" y="40" width="200" height="200" as="geometry"/>
-  <mxCell id="1" parent="0"/>
+</mxCell>
-  <mxCell id="lane1" value="Frontend" style="swimlane;" vertex="1" parent="1">
+<mxCell id="step1" value="Step 1" style="rounded=1;" vertex="1" parent="lane1">
-    <mxGeometry x="40" y="40" width="200" height="200" as="geometry"/>
+  <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="step1" value="Step 1" style="rounded=1;" vertex="1" parent="lane1">
+<mxCell id="lane2" value="Backend" style="swimlane;" vertex="1" parent="1">
-    <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
+  <mxGeometry x="280" y="40" width="200" height="200" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="lane2" value="Backend" style="swimlane;" vertex="1" parent="1">
+<mxCell id="step2" value="Step 2" style="rounded=1;" vertex="1" parent="lane2">
-    <mxGeometry x="280" y="40" width="200" height="200" as="geometry"/>
+  <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="step2" value="Step 2" style="rounded=1;" vertex="1" parent="lane2">
+<mxCell id="edge1" style="edgeStyle=orthogonalEdgeStyle;endArrow=classic;" edge="1" parent="1" source="step1" target="step2">
-    <mxGeometry x="20" y="60" width="160" height="40" as="geometry"/>
+  <mxGeometry relative="1" as="geometry"/>
-  </mxCell>
+</mxCell>
-  <mxCell id="edge1" style="edgeStyle=orthogonalEdgeStyle;endArrow=classic;" edge="1" parent="1" source="step1" target="step2">
-    <mxGeometry relative="1" as="geometry"/>
-  </mxCell>
-</root>
 \`\`\`
 
+### append_diagram Details
+
+**WHEN TO USE:** Only call this tool when display_diagram output was truncated (you'll see an error message about truncation).
+
+**CRITICAL RULES:**
+1. Do NOT include any wrapper tags - just continue the mxCell elements
+2. Continue from EXACTLY where your previous output stopped
+3. Complete the remaining mxCell elements
+4. If still truncated, call append_diagram again with the next fragment
+
+**Example:** If previous output ended with \`<mxCell id="x" style="rounded=1\`, continue with \`;" vertex="1">...\` and complete the remaining elements.
+
 ### edit_diagram Details
 
 **CRITICAL RULES:**
@@ -243,53 +335,6 @@ If edit_diagram fails with "pattern not found":
 
 
 
-### Edge Routing Rules:
-When creating edges/connectors, you MUST follow these rules to avoid overlapping lines:
-
-**Rule 1: NEVER let multiple edges share the same path**
-- If two edges connect the same pair of nodes, they MUST exit/enter at DIFFERENT positions
-- Use exitY=0.3 for first edge, exitY=0.7 for second edge (NOT both 0.5)
-
-**Rule 2: For bidirectional connections (A↔B), use OPPOSITE sides**
-- A→B: exit from RIGHT side of A (exitX=1), enter LEFT side of B (entryX=0)
-- B→A: exit from LEFT side of B (exitX=0), enter RIGHT side of A (entryX=1)
-
-**Rule 3: Always specify exitX, exitY, entryX, entryY explicitly**
-- Every edge MUST have these 4 attributes set in the style
-- Example: style="edgeStyle=orthogonalEdgeStyle;exitX=1;exitY=0.3;entryX=0;entryY=0.3;endArrow=classic;"
-
-**Rule 4: Route edges AROUND intermediate shapes (obstacle avoidance) - CRITICAL!**
-- Before creating an edge, identify ALL shapes positioned between source and target
-- If any shape is in the direct path, you MUST use waypoints to route around it
-- For DIAGONAL connections: route along the PERIMETER (outside edge) of the diagram, NOT through the middle
-- Add 20-30px clearance from shape boundaries when calculating waypoint positions
-- Route ABOVE (lower y), BELOW (higher y), or to the SIDE of obstacles
-- NEVER draw a line that visually crosses over another shape's bounding box
-
-**Rule 5: Plan layout strategically BEFORE generating XML**
-- Organize shapes into visual layers/zones (columns or rows) based on diagram flow
-- Space shapes 150-200px apart to create clear routing channels for edges
-- Mentally trace each edge: "What shapes are between source and target?"
-- Prefer layouts where edges naturally flow in one direction (left-to-right or top-to-bottom)
-
-**Rule 6: Use multiple waypoints for complex routing**
-- One waypoint is often not enough - use 2-3 waypoints to create proper L-shaped or U-shaped paths
-- Each direction change needs a waypoint (corner point)
-- Waypoints should form clear horizontal/vertical segments (orthogonal routing)
-- Calculate positions by: (1) identify obstacle boundaries, (2) add 20-30px margin
-
-**Rule 7: Choose NATURAL connection points based on flow direction**
-- NEVER use corner connections (e.g., entryX=1,entryY=1) - they look unnatural
-- For TOP-TO-BOTTOM flow: exit from bottom (exitY=1), enter from top (entryY=0)
-- For LEFT-TO-RIGHT flow: exit from right (exitX=1), enter from left (entryX=0)
-- For DIAGONAL connections: use the side closest to the target, not corners
-- Example: Node below-right of source → exit from bottom (exitY=1) OR right (exitX=1), not corner
-
-**Before generating XML, mentally verify:**
-1. "Do any edges cross over shapes that aren't their source/target?" → If yes, add waypoints
-2. "Do any two edges share the same path?" → If yes, adjust exit/entry points
-3. "Are any connection points at corners (both X and Y are 0 or 1)?" → If yes, use edge centers instead
-4. "Could I rearrange shapes to reduce edge crossings?" → If yes, revise layout
 
 ## Edge Examples
 
@@ -343,12 +388,16 @@ const EXTENDED_PROMPT_MODEL_PATTERNS = [
 ]
 
 /**
- * Get the appropriate system prompt based on the model ID
+ * Get the appropriate system prompt based on the model ID and style preference
  * Uses extended prompt for Opus 4.5 and Haiku 4.5 which have 4000 token cache minimum
  * @param modelId - The AI model ID from environment
+ * @param minimalStyle - If true, removes style instructions to save tokens
  * @returns The system prompt string
  */
-export function getSystemPrompt(modelId?: string): string {
+export function getSystemPrompt(
+    modelId?: string,
+    minimalStyle?: boolean,
+): string {
     const modelName = modelId || "AI"
 
     let prompt: string
@@ -369,5 +418,15 @@ export function getSystemPrompt(modelId?: string): string {
         prompt = DEFAULT_SYSTEM_PROMPT
     }
 
+    // Add style instructions based on preference
+    // Minimal style: prepend instruction at START (more prominent)
+    // Normal style: append at end
+    if (minimalStyle) {
+        console.log(`[System Prompt] Minimal style mode ENABLED`)
+        prompt = MINIMAL_STYLE_INSTRUCTION + prompt
+    } else {
+        prompt += STYLE_INSTRUCTIONS
+    }
+
     return prompt.replace("{{MODEL_NAME}}", modelName)
 }

lib/use-file-processor.tsx

@@ -0,0 +1,110 @@
+"use client"
+
+import { useState } from "react"
+import { toast } from "sonner"
+import {
+    extractPdfText,
+    extractTextFileContent,
+    isPdfFile,
+    isTextFile,
+    MAX_EXTRACTED_CHARS,
+} from "@/lib/pdf-utils"
+
+export interface FileData {
+    text: string
+    charCount: number
+    isExtracting: boolean
+}
+
+/**
+ * Hook for processing file uploads, especially PDFs and text files.
+ * Handles text extraction, character limit validation, and cleanup.
+ */
+export function useFileProcessor() {
+    const [files, setFiles] = useState<File[]>([])
+    const [pdfData, setPdfData] = useState<Map<File, FileData>>(new Map())
+
+    const handleFileChange = async (newFiles: File[]) => {
+        setFiles(newFiles)
+
+        // Extract text immediately for new PDF/text files
+        for (const file of newFiles) {
+            const needsExtraction =
+                (isPdfFile(file) || isTextFile(file)) && !pdfData.has(file)
+            if (needsExtraction) {
+                // Mark as extracting
+                setPdfData((prev) => {
+                    const next = new Map(prev)
+                    next.set(file, {
+                        text: "",
+                        charCount: 0,
+                        isExtracting: true,
+                    })
+                    return next
+                })
+
+                // Extract text asynchronously
+                try {
+                    let text: string
+                    if (isPdfFile(file)) {
+                        text = await extractPdfText(file)
+                    } else {
+                        text = await extractTextFileContent(file)
+                    }
+
+                    // Check character limit
+                    if (text.length > MAX_EXTRACTED_CHARS) {
+                        const limitK = MAX_EXTRACTED_CHARS / 1000
+                        toast.error(
+                            `${file.name}: Content exceeds ${limitK}k character limit (${(text.length / 1000).toFixed(1)}k chars)`,
+                        )
+                        setPdfData((prev) => {
+                            const next = new Map(prev)
+                            next.delete(file)
+                            return next
+                        })
+                        // Remove the file from the list
+                        setFiles((prev) => prev.filter((f) => f !== file))
+                        continue
+                    }
+
+                    setPdfData((prev) => {
+                        const next = new Map(prev)
+                        next.set(file, {
+                            text,
+                            charCount: text.length,
+                            isExtracting: false,
+                        })
+                        return next
+                    })
+                } catch (error) {
+                    console.error("Failed to extract text:", error)
+                    toast.error(`Failed to read file: ${file.name}`)
+                    setPdfData((prev) => {
+                        const next = new Map(prev)
+                        next.delete(file)
+                        return next
+                    })
+                }
+            }
+        }
+
+        // Clean up pdfData for removed files
+        setPdfData((prev) => {
+            const next = new Map(prev)
+            for (const key of prev.keys()) {
+                if (!newFiles.includes(key)) {
+                    next.delete(key)
+                }
+            }
+            return next
+        })
+    }
+
+    return {
+        files,
+        pdfData,
+        handleFileChange,
+        setFiles, // Export for external control (e.g., clearing files)
+    }
+}

lib/use-quota-manager.tsx

@@ -0,0 +1,247 @@
+"use client"
+
+import { useCallback, useMemo } from "react"
+import { toast } from "sonner"
+import { QuotaLimitToast } from "@/components/quota-limit-toast"
+import { STORAGE_KEYS } from "@/lib/storage"
+
+export interface QuotaConfig {
+    dailyRequestLimit: number
+    dailyTokenLimit: number
+    tpmLimit: number
+}
+
+export interface QuotaCheckResult {
+    allowed: boolean
+    remaining: number
+    used: number
+}
+
+/**
+ * Hook for managing request/token quotas and rate limiting.
+ * Handles three types of limits:
+ * - Daily request limit
+ * - Daily token limit
+ * - Tokens per minute (TPM) rate limit
+ *
+ * Users with their own API key bypass all limits.
+ */
+export function useQuotaManager(config: QuotaConfig): {
+    hasOwnApiKey: () => boolean
+    checkDailyLimit: () => QuotaCheckResult
+    checkTokenLimit: () => QuotaCheckResult
+    checkTPMLimit: () => QuotaCheckResult
+    incrementRequestCount: () => void
+    incrementTokenCount: (tokens: number) => void
+    incrementTPMCount: (tokens: number) => void
+    showQuotaLimitToast: () => void
+    showTokenLimitToast: (used: number) => void
+    showTPMLimitToast: () => void
+} {
+    const { dailyRequestLimit, dailyTokenLimit, tpmLimit } = config
+
+    // Check if user has their own API key configured (bypass limits)
+    const hasOwnApiKey = useCallback((): boolean => {
+        const provider = localStorage.getItem(STORAGE_KEYS.aiProvider)
+        const apiKey = localStorage.getItem(STORAGE_KEYS.aiApiKey)
+        return !!(provider && apiKey)
+    }, [])
+
+    // Generic helper: Parse count from localStorage with NaN guard
+    const parseStorageCount = (key: string): number => {
+        const count = parseInt(localStorage.getItem(key) || "0", 10)
+        return Number.isNaN(count) ? 0 : count
+    }
+
+    // Generic helper: Create quota checker factory
+    const createQuotaChecker = useCallback(
+        (
+            getTimeKey: () => string,
+            timeStorageKey: string,
+            countStorageKey: string,
+            limit: number,
+        ) => {
+            return (): QuotaCheckResult => {
+                if (hasOwnApiKey())
+                    return { allowed: true, remaining: -1, used: 0 }
+                if (limit <= 0) return { allowed: true, remaining: -1, used: 0 }
+
+                const currentTime = getTimeKey()
+                const storedTime = localStorage.getItem(timeStorageKey)
+                let count = parseStorageCount(countStorageKey)
+
+                if (storedTime !== currentTime) {
+                    count = 0
+                    localStorage.setItem(timeStorageKey, currentTime)
+                    localStorage.setItem(countStorageKey, "0")
+                }
+
+                return {
+                    allowed: count < limit,
+                    remaining: limit - count,
+                    used: count,
+                }
+            }
+        },
+        [hasOwnApiKey],
+    )
+
+    // Generic helper: Create quota incrementer factory
+    const createQuotaIncrementer = useCallback(
+        (
+            getTimeKey: () => string,
+            timeStorageKey: string,
+            countStorageKey: string,
+            validateInput: boolean = false,
+        ) => {
+            return (tokens: number = 1): void => {
+                if (validateInput && (!Number.isFinite(tokens) || tokens <= 0))
+                    return
+
+                const currentTime = getTimeKey()
+                const storedTime = localStorage.getItem(timeStorageKey)
+                let count = parseStorageCount(countStorageKey)
+
+                if (storedTime !== currentTime) {
+                    count = 0
+                    localStorage.setItem(timeStorageKey, currentTime)
+                }
+
+                localStorage.setItem(countStorageKey, String(count + tokens))
+            }
+        },
+        [],
+    )
+
+    // Check daily request limit
+    const checkDailyLimit = useMemo(
+        () =>
+            createQuotaChecker(
+                () => new Date().toDateString(),
+                STORAGE_KEYS.requestDate,
+                STORAGE_KEYS.requestCount,
+                dailyRequestLimit,
+            ),
+        [createQuotaChecker, dailyRequestLimit],
+    )
+
+    // Increment request count
+    const incrementRequestCount = useMemo(
+        () =>
+            createQuotaIncrementer(
+                () => new Date().toDateString(),
+                STORAGE_KEYS.requestDate,
+                STORAGE_KEYS.requestCount,
+                false,
+            ),
+        [createQuotaIncrementer],
+    )
+
+    // Show quota limit toast (request-based)
+    const showQuotaLimitToast = useCallback(() => {
+        toast.custom(
+            (t) => (
+                <QuotaLimitToast
+                    used={dailyRequestLimit}
+                    limit={dailyRequestLimit}
+                    onDismiss={() => toast.dismiss(t)}
+                />
+            ),
+            { duration: 15000 },
+        )
+    }, [dailyRequestLimit])
+
+    // Check daily token limit
+    const checkTokenLimit = useMemo(
+        () =>
+            createQuotaChecker(
+                () => new Date().toDateString(),
+                STORAGE_KEYS.tokenDate,
+                STORAGE_KEYS.tokenCount,
+                dailyTokenLimit,
+            ),
+        [createQuotaChecker, dailyTokenLimit],
+    )
+
+    // Increment token count
+    const incrementTokenCount = useMemo(
+        () =>
+            createQuotaIncrementer(
+                () => new Date().toDateString(),
+                STORAGE_KEYS.tokenDate,
+                STORAGE_KEYS.tokenCount,
+                true, // Validate input tokens
+            ),
+        [createQuotaIncrementer],
+    )
+
+    // Show token limit toast
+    const showTokenLimitToast = useCallback(
+        (used: number) => {
+            toast.custom(
+                (t) => (
+                    <QuotaLimitToast
+                        type="token"
+                        used={used}
+                        limit={dailyTokenLimit}
+                        onDismiss={() => toast.dismiss(t)}
+                    />
+                ),
+                { duration: 15000 },
+            )
+        },
+        [dailyTokenLimit],
+    )
+
+    // Check TPM (tokens per minute) limit
+    const checkTPMLimit = useMemo(
+        () =>
+            createQuotaChecker(
+                () => Math.floor(Date.now() / 60000).toString(),
+                STORAGE_KEYS.tpmMinute,
+                STORAGE_KEYS.tpmCount,
+                tpmLimit,
+            ),
+        [createQuotaChecker, tpmLimit],
+    )
+
+    // Increment TPM count
+    const incrementTPMCount = useMemo(
+        () =>
+            createQuotaIncrementer(
+                () => Math.floor(Date.now() / 60000).toString(),
+                STORAGE_KEYS.tpmMinute,
+                STORAGE_KEYS.tpmCount,
+                true, // Validate input tokens
+            ),
+        [createQuotaIncrementer],
+    )
+
+    // Show TPM limit toast
+    const showTPMLimitToast = useCallback(() => {
+        const limitDisplay =
+            tpmLimit >= 1000 ? `${tpmLimit / 1000}k` : String(tpmLimit)
+        toast.error(
+            `Rate limit reached (${limitDisplay} tokens/min). Please wait 60 seconds before sending another request.`,
+            { duration: 8000 },
+        )
+    }, [tpmLimit])
+
+    return {
+        // Check functions
+        hasOwnApiKey,
+        checkDailyLimit,
+        checkTokenLimit,
+        checkTPMLimit,
+
+        // Increment functions
+        incrementRequestCount,
+        incrementTokenCount,
+        incrementTPMCount,
+
+        // Toast functions
+        showQuotaLimitToast,
+        showTokenLimitToast,
+        showTPMLimitToast,
+    }
+}

package-lock.json

@@ -1,15 +1,15 @@
 {
     "name": "next-ai-draw-io",
-    "version": "0.3.0",
+    "version": "0.4.0",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "next-ai-draw-io",
-            "version": "0.3.0",
+            "version": "0.4.0",
             "license": "Apache-2.0",
             "dependencies": {
-                "@ai-sdk/amazon-bedrock": "^3.0.62",
+                "@ai-sdk/amazon-bedrock": "^3.0.70",
                 "@ai-sdk/anthropic": "^2.0.44",
                 "@ai-sdk/azure": "^2.0.69",
                 "@ai-sdk/deepseek": "^1.0.30",
@@ -33,7 +33,6 @@
                 "@radix-ui/react-switch": "^1.2.6",
                 "@radix-ui/react-tooltip": "^1.1.8",
                 "@radix-ui/react-use-controllable-state": "^1.2.2",
-                "@vercel/analytics": "^1.5.0",
                 "@xmldom/xmldom": "^0.9.8",
                 "ai": "^5.0.89",
                 "base-64": "^1.0.0",
@@ -41,6 +40,7 @@
                 "clsx": "^2.1.1",
                 "js-tiktoken": "^1.0.21",
                 "jsdom": "^26.0.0",
+                "jsonrepair": "^3.13.1",
                 "lucide-react": "^0.483.0",
                 "motion": "^12.23.25",
                 "next": "^16.0.7",
@@ -78,14 +78,14 @@
             }
         },
         "node_modules/@ai-sdk/amazon-bedrock": {
-            "version": "3.0.62",
+            "version": "3.0.70",
-            "resolved": "https://registry.npmjs.org/@ai-sdk/amazon-bedrock/-/amazon-bedrock-3.0.62.tgz",
+            "resolved": "https://registry.npmjs.org/@ai-sdk/amazon-bedrock/-/amazon-bedrock-3.0.70.tgz",
-            "integrity": "sha512-vVtndaj5zfHmgw8NSqN4baFDbFDTBZP6qufhKfqSNLtygEm8+8PL9XQX9urgzSzU3zp+zi3AmNNemvKLkkqblg==",
+            "integrity": "sha512-4NIBlwuS/iLKq2ynOqqyJ9imk/oyHuOzhBx88Bfm5I0ihQPKJ0dMMD1IKKuyDZvLRYKmlOEpa//P+/ZBp10drw==",
             "license": "Apache-2.0",
             "dependencies": {
-                "@ai-sdk/anthropic": "2.0.50",
+                "@ai-sdk/anthropic": "2.0.56",
                 "@ai-sdk/provider": "2.0.0",
-                "@ai-sdk/provider-utils": "3.0.18",
+                "@ai-sdk/provider-utils": "3.0.19",
                 "@smithy/eventstream-codec": "^4.0.1",
                 "@smithy/util-utf8": "^4.0.0",
                 "aws4fetch": "^1.0.20"
@@ -97,14 +97,48 @@
                 "zod": "^3.25.76 || ^4.1.8"
             }
         },
-        "node_modules/@ai-sdk/anthropic": {
+        "node_modules/@ai-sdk/amazon-bedrock/node_modules/@ai-sdk/provider-utils": {
-            "version": "2.0.50",
+            "version": "3.0.19",
-            "resolved": "https://registry.npmjs.org/@ai-sdk/anthropic/-/anthropic-2.0.50.tgz",
+            "resolved": "https://registry.npmjs.org/@ai-sdk/provider-utils/-/provider-utils-3.0.19.tgz",
-            "integrity": "sha512-21PaHfoLmouOXXNINTsZJsMw+wE5oLR2He/1kq/sKokTVKyq7ObGT1LDk6ahwxaz/GoaNaGankMh+EgVcdv2Cw==",
+            "integrity": "sha512-W41Wc9/jbUVXVwCN/7bWa4IKe8MtxO3EyA0Hfhx6grnmiYlCvpI8neSYWFE0zScXJkgA/YK3BRybzgyiXuu6JA==",
             "license": "Apache-2.0",
             "dependencies": {
                 "@ai-sdk/provider": "2.0.0",
-                "@ai-sdk/provider-utils": "3.0.18"
+                "@standard-schema/spec": "^1.0.0",
+                "eventsource-parser": "^3.0.6"
+            },
+            "engines": {
+                "node": ">=18"
+            },
+            "peerDependencies": {
+                "zod": "^3.25.76 || ^4.1.8"
+            }
+        },
+        "node_modules/@ai-sdk/anthropic": {
+            "version": "2.0.56",
+            "resolved": "https://registry.npmjs.org/@ai-sdk/anthropic/-/anthropic-2.0.56.tgz",
+            "integrity": "sha512-XHJKu0Yvfu9SPzRfsAFESa+9T7f2YJY6TxykKMfRsAwpeWAiX/Gbx5J5uM15AzYC3Rw8tVP3oH+j7jEivENirQ==",
+            "license": "Apache-2.0",
+            "dependencies": {
+                "@ai-sdk/provider": "2.0.0",
+                "@ai-sdk/provider-utils": "3.0.19"
+            },
+            "engines": {
+                "node": ">=18"
+            },
+            "peerDependencies": {
+                "zod": "^3.25.76 || ^4.1.8"
+            }
+        },
+        "node_modules/@ai-sdk/anthropic/node_modules/@ai-sdk/provider-utils": {
+            "version": "3.0.19",
+            "resolved": "https://registry.npmjs.org/@ai-sdk/provider-utils/-/provider-utils-3.0.19.tgz",
+            "integrity": "sha512-W41Wc9/jbUVXVwCN/7bWa4IKe8MtxO3EyA0Hfhx6grnmiYlCvpI8neSYWFE0zScXJkgA/YK3BRybzgyiXuu6JA==",
+            "license": "Apache-2.0",
+            "dependencies": {
+                "@ai-sdk/provider": "2.0.0",
+                "@standard-schema/spec": "^1.0.0",
+                "eventsource-parser": "^3.0.6"
             },
             "engines": {
                 "node": ">=18"
@@ -2489,9 +2523,9 @@
             }
         },
         "node_modules/@next/env": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/env/-/env-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/env/-/env-16.0.10.tgz",
-            "integrity": "sha512-gpaNgUh5nftFKRkRQGnVi5dpcYSKGcZZkQffZ172OrG/XkrnS7UBTQ648YY+8ME92cC4IojpI2LqTC8sTDhAaw==",
+            "integrity": "sha512-8tuaQkyDVgeONQ1MeT9Mkk8pQmZapMKFh5B+OrFUlG3rVmYTXcXlBetBgTurKXGaIZvkoqRT9JL5K3phXcgang==",
             "license": "MIT"
         },
         "node_modules/@next/eslint-plugin-next": {
@@ -2505,9 +2539,9 @@
             }
         },
         "node_modules/@next/swc-darwin-arm64": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-16.0.10.tgz",
-            "integrity": "sha512-LlDtCYOEj/rfSnEn/Idi+j1QKHxY9BJFmxx7108A6D8K0SB+bNgfYQATPk/4LqOl4C0Wo3LACg2ie6s7xqMpJg==",
+            "integrity": "sha512-4XgdKtdVsaflErz+B5XeG0T5PeXKDdruDf3CRpnhN+8UebNa5N2H58+3GDgpn/9GBurrQ1uWW768FfscwYkJRg==",
             "cpu": [
                 "arm64"
             ],
@@ -2521,9 +2555,9 @@
             }
         },
         "node_modules/@next/swc-darwin-x64": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-16.0.10.tgz",
-            "integrity": "sha512-rtZ7BhnVvO1ICf3QzfW9H3aPz7GhBrnSIMZyr4Qy6boXF0b5E3QLs+cvJmg3PsTCG2M1PBoC+DANUi4wCOKXpA==",
+            "integrity": "sha512-spbEObMvRKkQ3CkYVOME+ocPDFo5UqHb8EMTS78/0mQ+O1nqE8toHJVioZo4TvebATxgA8XMTHHrScPrn68OGw==",
             "cpu": [
                 "x64"
             ],
@@ -2537,9 +2571,9 @@
             }
         },
         "node_modules/@next/swc-linux-arm64-gnu": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-16.0.10.tgz",
-            "integrity": "sha512-mloD5WcPIeIeeZqAIP5c2kdaTa6StwP4/2EGy1mUw8HiexSHGK/jcM7lFuS3u3i2zn+xH9+wXJs6njO7VrAqww==",
+            "integrity": "sha512-uQtWE3X0iGB8apTIskOMi2w/MKONrPOUCi5yLO+v3O8Mb5c7K4Q5KD1jvTpTF5gJKa3VH/ijKjKUq9O9UhwOYw==",
             "cpu": [
                 "arm64"
             ],
@@ -2553,9 +2587,9 @@
             }
         },
         "node_modules/@next/swc-linux-arm64-musl": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-musl/-/swc-linux-arm64-musl-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-musl/-/swc-linux-arm64-musl-16.0.10.tgz",
-            "integrity": "sha512-+ksWNrZrthisXuo9gd1XnjHRowCbMtl/YgMpbRvFeDEqEBd523YHPWpBuDjomod88U8Xliw5DHhekBC3EOOd9g==",
+            "integrity": "sha512-llA+hiDTrYvyWI21Z0L1GiXwjQaanPVQQwru5peOgtooeJ8qx3tlqRV2P7uH2pKQaUfHxI/WVarvI5oYgGxaTw==",
             "cpu": [
                 "arm64"
             ],
@@ -2569,9 +2603,9 @@
             }
         },
         "node_modules/@next/swc-linux-x64-gnu": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-gnu/-/swc-linux-x64-gnu-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-gnu/-/swc-linux-x64-gnu-16.0.10.tgz",
-            "integrity": "sha512-4WtJU5cRDxpEE44Ana2Xro1284hnyVpBb62lIpU5k85D8xXxatT+rXxBgPkc7C1XwkZMWpK5rXLXTh9PFipWsA==",
+            "integrity": "sha512-AK2q5H0+a9nsXbeZ3FZdMtbtu9jxW4R/NgzZ6+lrTm3d6Zb7jYrWcgjcpM1k8uuqlSy4xIyPR2YiuUr+wXsavA==",
             "cpu": [
                 "x64"
             ],
@@ -2585,9 +2619,9 @@
             }
         },
         "node_modules/@next/swc-linux-x64-musl": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-musl/-/swc-linux-x64-musl-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-musl/-/swc-linux-x64-musl-16.0.10.tgz",
-            "integrity": "sha512-HYlhqIP6kBPXalW2dbMTSuB4+8fe+j9juyxwfMwCe9kQPPeiyFn7NMjNfoFOfJ2eXkeQsoUGXg+O2SE3m4Qg2w==",
+            "integrity": "sha512-1TDG9PDKivNw5550S111gsO4RGennLVl9cipPhtkXIFVwo31YZ73nEbLjNC8qG3SgTz/QZyYyaFYMeY4BKZR/g==",
             "cpu": [
                 "x64"
             ],
@@ -2601,9 +2635,9 @@
             }
         },
         "node_modules/@next/swc-win32-arm64-msvc": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-win32-arm64-msvc/-/swc-win32-arm64-msvc-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-win32-arm64-msvc/-/swc-win32-arm64-msvc-16.0.10.tgz",
-            "integrity": "sha512-EviG+43iOoBRZg9deGauXExjRphhuYmIOJ12b9sAPy0eQ6iwcPxfED2asb/s2/yiLYOdm37kPaiZu8uXSYPs0Q==",
+            "integrity": "sha512-aEZIS4Hh32xdJQbHz121pyuVZniSNoqDVx1yIr2hy+ZwJGipeqnMZBJHyMxv2tiuAXGx6/xpTcQJ6btIiBjgmg==",
             "cpu": [
                 "arm64"
             ],
@@ -2617,9 +2651,9 @@
             }
         },
         "node_modules/@next/swc-win32-x64-msvc": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/@next/swc-win32-x64-msvc/-/swc-win32-x64-msvc-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/@next/swc-win32-x64-msvc/-/swc-win32-x64-msvc-16.0.10.tgz",
-            "integrity": "sha512-gniPjy55zp5Eg0896qSrf3yB1dw4F/3s8VK1ephdsZZ129j2n6e1WqCbE2YgcKhW9hPB9TVZENugquWJD5x0ug==",
+            "integrity": "sha512-E+njfCoFLb01RAFEnGZn6ERoOqhK1Gl3Lfz1Kjnj0Ulfu7oJbuMyvBKNj/bw8XZnenHDASlygTjZICQW+rYW1Q==",
             "cpu": [
                 "x64"
             ],
@@ -6028,44 +6062,6 @@
                 "win32"
             ]
         },
-        "node_modules/@vercel/analytics": {
-            "version": "1.5.0",
-            "resolved": "https://registry.npmjs.org/@vercel/analytics/-/analytics-1.5.0.tgz",
-            "integrity": "sha512-MYsBzfPki4gthY5HnYN7jgInhAZ7Ac1cYDoRWFomwGHWEX7odTEzbtg9kf/QSo7XEsEAqlQugA6gJ2WS2DEa3g==",
-            "license": "MPL-2.0",
-            "peerDependencies": {
-                "@remix-run/react": "^2",
-                "@sveltejs/kit": "^1 || ^2",
-                "next": ">= 13",
-                "react": "^18 || ^19 || ^19.0.0-rc",
-                "svelte": ">= 4",
-                "vue": "^3",
-                "vue-router": "^4"
-            },
-            "peerDependenciesMeta": {
-                "@remix-run/react": {
-                    "optional": true
-                },
-                "@sveltejs/kit": {
-                    "optional": true
-                },
-                "next": {
-                    "optional": true
-                },
-                "react": {
-                    "optional": true
-                },
-                "svelte": {
-                    "optional": true
-                },
-                "vue": {
-                    "optional": true
-                },
-                "vue-router": {
-                    "optional": true
-                }
-            }
-        },
         "node_modules/@vercel/oidc": {
             "version": "3.0.5",
             "resolved": "https://registry.npmjs.org/@vercel/oidc/-/oidc-3.0.5.tgz",
@@ -8017,14 +8013,15 @@
             }
         },
         "node_modules/form-data": {
-            "version": "4.0.2",
+            "version": "4.0.5",
-            "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.2.tgz",
+            "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.5.tgz",
-            "integrity": "sha512-hGfm/slu0ZabnNt4oaRZ6uREyfCj6P4fT/n6A1rGV+Z0VdGXjfOhVUpkn6qVQONHGIFwmveGXyDs75+nr6FM8w==",
+            "integrity": "sha512-8RipRLol37bNs2bhoV67fiTEvdTrbMUYcFTiy3+wuuOnUog2QBHCZWXDRijWQfAkhBj2Uf5UnVaiWwA5vdd82w==",
             "license": "MIT",
             "dependencies": {
                 "asynckit": "^0.4.0",
                 "combined-stream": "^1.0.8",
                 "es-set-tostringtag": "^2.1.0",
+                "hasown": "^2.0.2",
                 "mime-types": "^2.1.12"
             },
             "engines": {
@@ -9203,6 +9200,15 @@
                 "node": ">=6"
             }
         },
+        "node_modules/jsonrepair": {
+            "version": "3.13.1",
+            "resolved": "https://registry.npmjs.org/jsonrepair/-/jsonrepair-3.13.1.tgz",
+            "integrity": "sha512-WJeiE0jGfxYmtLwBTEk8+y/mYcaleyLXWaqp5bJu0/ZTSeG0KQq/wWQ8pmnkKenEdN6pdnn6QtcoSUkbqDHWNw==",
+            "license": "ISC",
+            "bin": {
+                "jsonrepair": "bin/cli.js"
+            }
+        },
         "node_modules/jsx-ast-utils": {
             "version": "3.3.5",
             "resolved": "https://registry.npmjs.org/jsx-ast-utils/-/jsx-ast-utils-3.3.5.tgz",
@@ -10676,12 +10682,12 @@
             "license": "MIT"
         },
         "node_modules/next": {
-            "version": "16.0.7",
+            "version": "16.0.10",
-            "resolved": "https://registry.npmjs.org/next/-/next-16.0.7.tgz",
+            "resolved": "https://registry.npmjs.org/next/-/next-16.0.10.tgz",
-            "integrity": "sha512-3mBRJyPxT4LOxAJI6IsXeFtKfiJUbjCLgvXO02fV8Wy/lIhPvP94Fe7dGhUgHXcQy4sSuYwQNcOLhIfOm0rL0A==",
+            "integrity": "sha512-RtWh5PUgI+vxlV3HdR+IfWA1UUHu0+Ram/JBO4vWB54cVPentCD0e+lxyAYEsDTqGGMg7qpjhKh6dc6aW7W/sA==",
             "license": "MIT",
             "dependencies": {
-                "@next/env": "16.0.7",
+                "@next/env": "16.0.10",
                 "@swc/helpers": "0.5.15",
                 "caniuse-lite": "^1.0.30001579",
                 "postcss": "8.4.31",
@@ -10694,14 +10700,14 @@
                 "node": ">=20.9.0"
             },
             "optionalDependencies": {
-                "@next/swc-darwin-arm64": "16.0.7",
+                "@next/swc-darwin-arm64": "16.0.10",
-                "@next/swc-darwin-x64": "16.0.7",
+                "@next/swc-darwin-x64": "16.0.10",
-                "@next/swc-linux-arm64-gnu": "16.0.7",
+                "@next/swc-linux-arm64-gnu": "16.0.10",
-                "@next/swc-linux-arm64-musl": "16.0.7",
+                "@next/swc-linux-arm64-musl": "16.0.10",
-                "@next/swc-linux-x64-gnu": "16.0.7",
+                "@next/swc-linux-x64-gnu": "16.0.10",
-                "@next/swc-linux-x64-musl": "16.0.7",
+                "@next/swc-linux-x64-musl": "16.0.10",
-                "@next/swc-win32-arm64-msvc": "16.0.7",
+                "@next/swc-win32-arm64-msvc": "16.0.10",
-                "@next/swc-win32-x64-msvc": "16.0.7",
+                "@next/swc-win32-x64-msvc": "16.0.10",
                 "sharp": "^0.34.4"
             },
             "peerDependencies": {

package.json

@@ -1,6 +1,6 @@
 {
     "name": "next-ai-draw-io",
-    "version": "0.3.0",
+    "version": "0.4.1",
     "license": "Apache-2.0",
     "private": true,
     "scripts": {
@@ -13,7 +13,7 @@
         "prepare": "husky"
     },
     "dependencies": {
-        "@ai-sdk/amazon-bedrock": "^3.0.62",
+        "@ai-sdk/amazon-bedrock": "^3.0.70",
         "@ai-sdk/anthropic": "^2.0.44",
         "@ai-sdk/azure": "^2.0.69",
         "@ai-sdk/deepseek": "^1.0.30",
@@ -37,7 +37,6 @@
         "@radix-ui/react-switch": "^1.2.6",
         "@radix-ui/react-tooltip": "^1.1.8",
         "@radix-ui/react-use-controllable-state": "^1.2.2",
-        "@vercel/analytics": "^1.5.0",
         "@xmldom/xmldom": "^0.9.8",
         "ai": "^5.0.89",
         "base-64": "^1.0.0",
@@ -45,6 +44,7 @@
         "clsx": "^2.1.1",
         "js-tiktoken": "^1.0.21",
         "jsdom": "^26.0.0",
+        "jsonrepair": "^3.13.1",
         "lucide-react": "^0.483.0",
         "motion": "^12.23.25",
         "next": "^16.0.7",

vercel.json

@@ -0,0 +1,12 @@
+{
+    "functions": {
+        "app/api/chat/route.ts": {
+            "memory": 512,
+            "maxDuration": 120
+        },
+        "app/api/**/route.ts": {
+            "memory": 256,
+            "maxDuration": 10
+        }
+    }
+}