Remove express, use built-in http for dependency-free build

server.js

@@ -1,86 +1,8 @@
 const http = require('http');
-const fs = require('fs');
-const path = require('path');
 
-const PORT = process.env.PORT || 3000;
-const PUBLIC_DIR = path.join(__dirname, 'public');
-
-const MIME_TYPES = {
-  '.html': 'text/html; charset=utf-8',
-  '.css':  'text/css',
-  '.js':   'text/javascript',
-  '.png':  'image/png',
-  '.jpg':  'image/jpeg',
-  '.ico':  'image/x-icon',
-};
-
-function serveStatic(res, filePath) {
-  fs.readFile(filePath, (err, data) => {
-    if (err) {
-      res.writeHead(404);
-      res.end('Not Found');
-      return;
-    }
-    const ext = path.extname(filePath);
-    res.writeHead(200, { 'Content-Type': MIME_TYPES[ext] || 'application/octet-stream' });
-    res.end(data);
-  });
-}
-
-function sendJson(res, status, body) {
-  res.writeHead(status, { 'Content-Type': 'application/json' });
-  res.end(JSON.stringify(body));
-}
-
-function readBody(req) {
-  return new Promise((resolve) => {
-    let body = '';
-    req.on('data', chunk => { body += chunk; });
-    req.on('end', () => {
-      try { resolve(JSON.parse(body)); }
-      catch { resolve({}); }
-    });
-  });
-}
-
-const server = http.createServer(async (req, res) => {
-  const url = new URL(req.url, `http://localhost`);
-  const pathname = url.pathname;
-
-  // API routes
-  if (pathname === '/api/greeting' && req.method === 'GET') {
-    const greetings = ['안녕하세요! 👋', '반갑습니다! 😊', '어서오세요! 🌸', '좋은 하루예요! ☀️', '환영합니다! 🎉'];
-    sendJson(res, 200, { message: greetings[Math.floor(Math.random() * greetings.length)] });
-    return;
-  }
-
-  if (pathname === '/api/stats' && req.method === 'GET') {
-    sendJson(res, 200, {
-      uptime: Math.floor(process.uptime()),
-      nodeVersion: process.version,
-      platform: process.platform,
-      deployedAt: new Date().toISOString(),
-    });
-    return;
-  }
-
-  if (pathname === '/api/echo' && req.method === 'POST') {
-    const { text } = await readBody(req);
-    if (!text) { sendJson(res, 400, { error: '텍스트를 입력해주세요.' }); return; }
-    sendJson(res, 200, { echo: text, length: text.length });
-    return;
-  }
-
-  // Static files
-  const filePath = path.join(PUBLIC_DIR, pathname === '/' ? 'index.html' : pathname);
-  const ext = path.extname(filePath);
-  if (ext) {
-    serveStatic(res, filePath);
-  } else {
-    serveStatic(res, path.join(PUBLIC_DIR, 'index.html'));
-  }
+const server = http.createServer((req, res) => {
+  res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8' });
+  res.end('<h1>Coolify 배포 성공! 🎉</h1><p>node ' + process.version + '</p>');
 });
 
-server.listen(PORT, () => {
-  console.log(`서버 실행 중: http://localhost:${PORT}`);
-});
+server.listen(3000, () => console.log('listening on 3000'));