add avatar support for BBB

server/routes/auth.js

@@ -203,6 +203,36 @@ router.delete('/avatar', authenticateToken, async (req, res) => {
   }
 });
 
+// GET /api/auth/avatar/initials/:name - Generate SVG avatar from initials (public, BBB fetches this)
+router.get('/avatar/initials/:name', (req, res) => {
+  const name = decodeURIComponent(req.params.name).trim();
+  const color = req.query.color || generateColorFromName(name);
+  const initials = name
+    .split(' ')
+    .map(n => n[0])
+    .join('')
+    .toUpperCase()
+    .slice(0, 2) || '?';
+
+  const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 128 128">
+    <rect width="128" height="128" rx="64" fill="${color}"/>
+    <text x="64" y="64" dy=".35em" text-anchor="middle" fill="white" font-family="Arial, sans-serif" font-size="52" font-weight="bold">${initials}</text>
+  </svg>`;
+
+  res.setHeader('Content-Type', 'image/svg+xml');
+  res.setHeader('Cache-Control', 'public, max-age=3600');
+  res.send(svg);
+});
+
+function generateColorFromName(name) {
+  let hash = 0;
+  for (let i = 0; i < name.length; i++) {
+    hash = name.charCodeAt(i) + ((hash << 5) - hash);
+  }
+  const hue = Math.abs(hash) % 360;
+  return `hsl(${hue}, 55%, 45%)`;
+}
+
 // GET /api/auth/avatar/:filename - Serve avatar image
 router.get('/avatar/:filename', (req, res) => {
   const filepath = path.join(uploadsDir, req.params.filename);