Use Node.js for webserver instead of Python

Added serve.js - simple static file server using Node's http module.
Updated Justfile to use node serve.js for consistency.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2 files changed, 51 insertions, 2 deletions

diff --git a/Justfile b/Justfile
index 43861c8..33a04dc 100644
--- a/Justfile
+++ b/Justfile
@@ -9,10 +9,10 @@ build:
 
 # Start webserver and open in Firefox
 open:
-    python -m http.server 9000 &
+    node serve.js 9000 &
     sleep 1
     firefox http://localhost:9000
 
 # Stop the webserver
 stop:
-    pkill -f "http.server 9000" || true
+    pkill -f "node serve.js" || true
diff --git a/serve.js b/serve.js
new file mode 100644
index 0000000..9e71f46
--- /dev/null
+++ b/serve.js
@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+/**
+ * Simple static file server for development
+ */
+
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const PORT = process.argv[2] || 9000;
+
+const MIME_TYPES = {
+  '.html': 'text/html',
+  '.css': 'text/css',
+  '.js': 'application/javascript',
+  '.json': 'application/json',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.png': 'image/png',
+  '.md': 'text/markdown',
+  '.ico': 'image/x-icon'
+};
+
+const server = http.createServer((req, res) => {
+  let filePath = '.' + (req.url === '/' ? '/index.html' : req.url);
+  filePath = decodeURIComponent(filePath);
+
+  const ext = path.extname(filePath).toLowerCase();
+  const contentType = MIME_TYPES[ext] || 'application/octet-stream';
+
+  fs.readFile(filePath, (err, content) => {
+    if (err) {
+      if (err.code === 'ENOENT') {
+        res.writeHead(404);
+        res.end('Not found');
+      } else {
+        res.writeHead(500);
+        res.end('Server error');
+      }
+    } else {
+      res.writeHead(200, { 'Content-Type': contentType });
+      res.end(content);
+    }
+  });
+});
+
+server.listen(PORT, () => {
+  console.log(`Server running at http://localhost:${PORT}/`);
+});