FIX: Add server.mjs for Render deployment

- Created server.mjs to serve static files
- Updated package.json start script
- Render now has proper entry point
- Site will serve index.html and all pages

Fixes 'Cannot find module server.mjs' error

Author: Achilles

package.json

@@ -4,8 +4,8 @@
   "description": "Execution Protocol as Virtuals ACP Service with ATTEST integration",
   "main": "src/index.js",
   "scripts": {
-    "start": "node src/index.js",
-    "dev": "nodemon src/index.js",
+    "start": "node server.mjs",
+    "dev": "node server.mjs",
     "test": "jest",
     "deploy": "node scripts/deploy.js",
     "deploy:testnet": "npx hardhat run scripts/deploy-testnet.js --network baseSepolia"

server.mjs

@@ -0,0 +1,60 @@
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const PORT = process.env.PORT || 10000;
+
+const mimeTypes = {
+  '.html': 'text/html',
+  '.css': 'text/css',
+  '.js': 'text/javascript',
+  '.json': 'application/json',
+  '.png': 'image/png',
+  '.jpg': 'image/jpeg',
+  '.gif': 'image/gif',
+  '.svg': 'image/svg+xml',
+  '.ico': 'image/x-icon'
+};
+
+const server = http.createServer((req, res) => {
+  let filePath = '.' + req.url;
+  
+  if (filePath === './') {
+    filePath = './index.html';
+  }
+  
+  // Check if it's a directory request
+  if (fs.existsSync(filePath) && fs.statSync(filePath).isDirectory()) {
+    filePath = path.join(filePath, 'index.html');
+  }
+  
+  const extname = String(path.extname(filePath)).toLowerCase();
+  const contentType = mimeTypes[extname] || 'application/octet-stream';
+  
+  fs.readFile(filePath, (error, content) => {
+    if (error) {
+      if (error.code === 'ENOENT') {
+        // Page not found
+        fs.readFile('./index.html', (err, content) => {
+          if (err) {
+            res.writeHead(404);
+            res.end('404 Not Found');
+          } else {
+            res.writeHead(200, { 'Content-Type': 'text/html' });
+            res.end(content, 'utf-8');
+          }
+        });
+      } else {
+        res.writeHead(500);
+        res.end('500 Server Error');
+      }
+    } else {
+      res.writeHead(200, { 'Content-Type': contentType });
+      res.end(content, 'utf-8');
+    }
+  });
+});
+
+server.listen(PORT, () => {
+  console.log(`Server running at http://localhost:${PORT}/`);
+});