fix: correct syntax error in Node.js backend server template literal

- Fix broken template literal escaping in scaffold-backend/nodejs/server.js
- Prevents backend server startup failures in Fullstack and Backend development modes

Author: SFARPak

scaffold-backend/nodejs/server.js

@@ -1,52 +1,64 @@
-const express = require('express');
-const cors = require('cors');
-const helmet = require('helmet');
-require('dotenv').config();
+const express = require("express");
+const cors = require("cors");
+const helmet = require("helmet");
+require("dotenv").config();
 
 const app = express();
 const port = process.env.PORT || 3000;
 
 // Middleware
 app.use(helmet());
-app.use(cors({
-  origin: ['http://localhost:3000', 'http://127.0.0.1:3000']
-}));
+app.use(
+  cors({
+    origin: ["http://localhost:3000", "http://127.0.0.1:3000"],
+  }),
+);
 app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
 // Routes
-app.get('/', (req, res) => {
-  res.json({ message: 'Node.js backend API is running' });
+app.get("/", (req, res) => {
+  res.json({ message: "Node.js backend API is running" });
 });
 
-app.get('/api/health', (req, res) => {
-  res.json({ status: 'healthy', timestamp: new Date().toISOString() });
+app.get("/api/health", (req, res) => {
+  res.json({ status: "healthy", timestamp: new Date().toISOString() });
 });
 
 // API routes
-app.get('/api/items', (req, res) => {
+app.get("/api/items", (req, res) => {
   // Mock data - replace with database queries
   const items = [
-    { id: 1, name: 'Sample Item 1', description: 'A sample item', price: 29.99 },
-    { id: 2, name: 'Sample Item 2', description: 'Another sample item', price: 49.99 }
+    {
+      id: 1,
+      name: "Sample Item 1",
+      description: "A sample item",
+      price: 29.99,
+    },
+    {
+      id: 2,
+      name: "Sample Item 2",
+      description: "Another sample item",
+      price: 49.99,
+    },
   ];
   res.json(items);
 });
 
-app.post('/api/items', (req, res) => {
+app.post("/api/items", (req, res) => {
   const { name, description, price } = req.body;
 
   // Basic validation
   if (!name || !price) {
-    return res.status(400).json({ error: 'Name and price are required' });
+    return res.status(400).json({ error: "Name and price are required" });
   }
 
   // Mock response - replace with database insertion
   const newItem = {
     id: Date.now(), // Simple ID generation
     name,
     description,
-    price: parseFloat(price)
+    price: parseFloat(price),
   };
 
   res.status(201).json(newItem);
@@ -55,16 +67,16 @@ app.post('/api/items', (req, res) => {
 // Error handling middleware
 app.use((err, req, res, next) => {
   console.error(err.stack);
-  res.status(500).json({ error: 'Something went wrong!' });
+  res.status(500).json({ error: "Something went wrong!" });
 });
 
 // 404 handler
 app.use((req, res) => {
-  res.status(404).json({ error: 'Route not found' });
+  res.status(404).json({ error: "Route not found" });
 });
 
 app.listen(port, () => {
-  console.log(\`Server running on http://localhost:\${port}\`);
+  console.log(`Server running on http://localhost:${port}`);
 });
 
-module.exports = app;
+module.exports = app;