fix: use dynamic import for vite in development only

Static import of vite fails in production because vite is a devDependency
that gets pruned. Changed to dynamic import inside the isProduction check
so the import only happens in development.

Author: TooAngel

server/index.js

@@ -1,5 +1,4 @@
 import express from 'express';
-import { createServer } from 'vite';
 import fs from 'fs';
 import proxy from './proxy.js';
 
@@ -12,6 +11,7 @@ async function startServer() {
   // Setup Vite middleware (development only)
   let vite;
   if (!isProduction) {
+    const { createServer } = await import('vite');
     vite = await createServer({
       server: { middlewareMode: true },
       appType: 'custom',