Sync from upstream llama.cpp repository

tools/server/webui/tests/stories/fixtures/ai-tutorial.ts

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+// AI Assistant Tutorial Response
+export const AI_TUTORIAL_MD = String.raw`
+# Building a Modern Chat Application with SvelteKit
+
+I'll help you create a **production-ready chat application** using SvelteKit, TypeScript, and WebSockets. This implementation includes real-time messaging, user authentication, and message persistence.
+
+## 🚀 Quick Start
+
+First, let's set up the project:
+
+${'```'}bash
+npm create svelte@latest chat-app
+cd chat-app
+npm install
+npm install socket.io socket.io-client
+npm install @prisma/client prisma
+npm run dev
+${'```'}
+
+## 📁 Project Structure
+
+${'```'}
+chat-app/
+├── src/
+│   ├── routes/
+│   │   ├── +layout.svelte
+│   │   ├── +page.svelte
+│   │   └── api/
+│   │       └── socket/+server.ts
+│   ├── lib/
+│   │   ├── components/
+│   │   │   ├── ChatMessage.svelte
+│   │   │   └── ChatInput.svelte
+│   │   └── stores/
+│   │       └── chat.ts
+│   └── app.html
+├── prisma/
+│   └── schema.prisma
+└── package.json
+${'```'}
+
+## 💻 Implementation
+
+### WebSocket Server
+
+${'```'}typescript
+// src/lib/server/socket.ts
+import { Server } from 'socket.io';
+import type { ViteDevServer } from 'vite';
+
+export function initializeSocketIO(server: ViteDevServer) {
+    const io = new Server(server.httpServer || server, {
+        cors: {
+            origin: process.env.ORIGIN || 'http://localhost:5173',
+            credentials: true
+        }
+    });
+
+    io.on('connection', (socket) => {
+        console.log('User connected:', socket.id);
+        
+        socket.on('message', async (data) => {
+            // Broadcast to all clients
+            io.emit('new-message', {
+                id: crypto.randomUUID(),
+                userId: socket.id,
+                content: data.content,
+                timestamp: new Date().toISOString()
+            });
+        });
+
+        socket.on('disconnect', () => {
+            console.log('User disconnected:', socket.id);
+        });
+    });
+
+    return io;
+}
+${'```'}
+
+### Client Store
+
+${'```'}typescript
+// src/lib/stores/chat.ts
+import { writable } from 'svelte/store';
+import io from 'socket.io-client';
+
+export interface Message {
+    id: string;
+    userId: string;
+    content: string;
+    timestamp: string;
+}
+
+function createChatStore() {
+    const { subscribe, update } = writable<Message[]>([]);
+    let socket: ReturnType<typeof io>;
+    
+    return {
+        subscribe,
+        connect: () => {
+            socket = io('http://localhost:5173');
+            
+            socket.on('new-message', (message: Message) => {
+                update(messages => [...messages, message]);
+            });
+        },
+        sendMessage: (content: string) => {
+            if (socket && content.trim()) {
+                socket.emit('message', { content });
+            }
+        }
+    };
+}
+
+export const chatStore = createChatStore();
+${'```'}
+
+## 🎯 Key Features
+
+✅ **Real-time messaging** with WebSockets  
+✅ **Message persistence** using Prisma + PostgreSQL  
+✅ **Type-safe** with TypeScript  
+✅ **Responsive UI** for all devices  
+✅ **Auto-reconnection** on connection loss  
+
+## 📊 Performance Metrics
+
+| Metric | Value |
+|--------|-------|
+| **Message Latency** | < 50ms |
+| **Concurrent Users** | 10,000+ |
+| **Messages/Second** | 5,000+ |
+| **Uptime** | 99.9% |
+
+## 🔧 Configuration
+
+### Environment Variables
+
+${'```'}env
+DATABASE_URL="postgresql://user:password@localhost:5432/chat"
+JWT_SECRET="your-secret-key"
+REDIS_URL="redis://localhost:6379"
+${'```'}
+
+## 🚢 Deployment
+
+Deploy to production using Docker:
+
+${'```'}dockerfile
+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --only=production
+COPY . .
+RUN npm run build
+EXPOSE 3000
+CMD ["node", "build"]
+${'```'}
+
+---
+
+*Need help? Check the [documentation](https://kit.svelte.dev) or [open an issue](https://github.com/sveltejs/kit/issues)*
+`;