feat: initial Reaktor modular synth app

React + Tone.js modular synthesizer with visual node editor.
Includes: Oscillator, Filter, Envelope, LFO, VCA, Delay, Reverb,
Distortion, Mixer, Scope, Output, and Keyboard modules.
SVG wire connections, knob controls, preset save/load system.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server.js

@@ -0,0 +1,47 @@
+// Lightweight static file server for Reaktor modular synth
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const PORT = process.env.PORT || 80;
+const STATIC_DIR = path.join(__dirname, 'dist');
+
+const MIME = {
+  '.html': 'text/html', '.css': 'text/css', '.js': 'application/javascript',
+  '.json': 'application/json', '.png': 'image/png', '.jpg': 'image/jpeg',
+  '.svg': 'image/svg+xml', '.ico': 'image/x-icon', '.woff2': 'font/woff2',
+  '.wasm': 'application/wasm',
+};
+
+const server = http.createServer((req, res) => {
+  let filePath = path.join(STATIC_DIR, req.url === '/' ? 'index.html' : req.url);
+
+  // SPA fallback: if file doesn't exist, serve index.html
+  if (!fs.existsSync(filePath) || fs.statSync(filePath).isDirectory()) {
+    filePath = path.join(STATIC_DIR, 'index.html');
+  }
+
+  if (!filePath.startsWith(STATIC_DIR)) {
+    res.writeHead(403); res.end('Forbidden'); return;
+  }
+
+  const ext = path.extname(filePath).toLowerCase();
+  const contentType = MIME[ext] || 'application/octet-stream';
+
+  fs.readFile(filePath, (err, data) => {
+    if (err) {
+      res.writeHead(err.code === 'ENOENT' ? 404 : 500);
+      res.end(err.code === 'ENOENT' ? 'Not found' : 'Server error');
+      return;
+    }
+    if (['.png', '.jpg', '.woff2', '.js', '.css'].includes(ext)) {
+      res.setHeader('Cache-Control', 'public, max-age=604800');
+    }
+    res.writeHead(200, { 'Content-Type': contentType });
+    res.end(data);
+  });
+});
+
+server.listen(PORT, () => {
+  console.log(`[reaktor] Running on port ${PORT}`);
+});