[#6] Add admin panel at /admin

- Password-protected (cabo2026) admin page
- View/approve/reject pending options
- Delete any option
- Toggle polls open/closed
- Live stats: voters, options, votes, pending count
- Add DELETE /api/options/:id endpoint
- Add option_deleted WebSocket broadcast

server.js

@@ -15,6 +15,12 @@ const DATA_FILE = path.join(DATA_DIR, 'votes.json');
 
 app.use(cors());
 app.use(express.json());
+
+// Admin panel
+app.get('/admin', (req, res) => {
+  res.sendFile(path.join(__dirname, 'public', 'admin.html'));
+});
+
 app.use(express.static(path.join(__dirname, 'public')));
 
 // ── Data helpers ──────────────────────────────────────────────
@@ -189,6 +195,16 @@ app.post('/api/options/:id/approve', (req, res) => {
   res.json({ success: true });
 });
 
+// Delete an option
+app.delete('/api/options/:id', (req, res) => {
+  const idx = data.options.findIndex(o => o.id === req.params.id);
+  if (idx === -1) return res.status(404).json({ error: 'Not found' });
+  data.options.splice(idx, 1);
+  saveData(data);
+  broadcast({ type: 'option_deleted', id: req.params.id });
+  res.json({ success: true });
+});
+
 // Remove vote from an option
 app.delete('/api/vote/:optionId', (req, res) => {
   const { voterName } = req.body;