feat: initial IPFS Portal — Next.js frontend for remote IPFS node management

Multi-file upload with Quick Upload + Crypto Payment tabs.
Dashboard with live IPFS metrics, Explorer, Peers, Pins, History, Settings pages.
Docker deploy (standalone output), full test suite (16 Playwright tests).
Payment integration via IPFSPortalPayment + MockUSDC contracts on zkSync.

serve-static.js

@@ -0,0 +1,26 @@
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const PORT = 3444;
+const ROOT = path.join(__dirname, 'out');
+const MIME = { '.html':'text/html','.js':'text/javascript','.css':'text/css','.png':'image/png','.svg':'image/svg+xml','.ico':'image/x-icon','.json':'application/json' };
+
+http.createServer((req, res) => {
+  let fp = path.join(ROOT, req.url === '/' ? 'index.html' : req.url);
+  // SPA fallback: serve index.html for non-file routes
+  if (!fs.existsSync(fp) || fs.statSync(fp).isDirectory()) {
+    fp = path.join(ROOT, 'index.html');
+  }
+  if (fs.existsSync(fp)) {
+    const ext = path.extname(fp);
+    res.writeHead(200, { 'Content-Type': MIME[ext] || 'text/html' });
+    fs.createReadStream(fp).pipe(res);
+  } else {
+    res.writeHead(404);
+    res.end('Not found');
+  }
+}).listen(PORT, () => {
+  console.log(IPFS Portal: http://localhost:);
+  console.log(Network: http://100.112.2.113:);
+});