feat(calendar): add reminder functionality for events with notifications

server/index.js

@@ -18,6 +18,7 @@ import caldavRoutes from './routes/caldav.js';
 import notificationRoutes from './routes/notifications.js';
 import oauthRoutes from './routes/oauth.js';
 import { startFederationSync } from './jobs/federationSync.js';
+import { startCalendarReminders } from './jobs/calendarReminders.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
@@ -93,6 +94,8 @@ async function start() {
 
   // Start periodic federation sync job (checks remote room settings every 60s)
   startFederationSync();
+  // Start calendar reminder job (sends in-app + browser notifications before events)
+  startCalendarReminders();
 }
 
 start().catch(err => {