feat: Multi-feature CRM update

- Add team_leader role with appropriate permissions
- Add lastSeen timestamp for chat online indicator
- Add needsFollowup flag to ucastnici table
- Add getTodayCalendarCount endpoint for calendar badge
- Add company reminders to calendar data
- Enhance company search to include phone and contacts
- Update routes to allow team_leader access to kurzy, services, timesheets

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

src/routes/event.routes.js

@@ -19,6 +19,11 @@ const eventIdSchema = z.object({
 // Všetky routes vyžadujú autentifikáciu
 router.use(authenticate);
 
+/**
+ * GET /api/events/today-count - Získať počet eventov a todos pre dnešok (pre badge v sidebar)
+ */
+router.get('/today-count', eventController.getTodayCount);
+
 /**
  * GET /api/events - Získať eventy a todos podľa mesiaca (filtrované podľa assigned users)
  */