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/services/ai-kurzy/registracie.service.js

@@ -130,6 +130,7 @@ export const getCombinedTableData = async () => {
       mesto: ucastnici.mesto,
       ulica: ucastnici.ulica,
       psc: ucastnici.psc,
+      needsFollowup: ucastnici.needsFollowup,
       kurzId: kurzy.id,
       kurzNazov: kurzy.nazov,
       kurzTyp: kurzy.typKurzu,
@@ -155,7 +156,7 @@ export const getCombinedTableData = async () => {
 };
 
 export const updateField = async (registrationId, field, value) => {
-  const ucastnikFields = ['titul', 'meno', 'priezvisko', 'email', 'telefon', 'firma', 'firmaIco', 'firmaDic', 'firmaIcDph', 'firmaSidlo', 'mesto', 'ulica', 'psc'];
+  const ucastnikFields = ['titul', 'meno', 'priezvisko', 'email', 'telefon', 'firma', 'firmaIco', 'firmaDic', 'firmaIcDph', 'firmaSidlo', 'mesto', 'ulica', 'psc', 'needsFollowup'];
   const registraciaFields = ['datumOd', 'datumDo', 'formaKurzu', 'pocetUcastnikov', 'fakturaCislo', 'fakturaVystavena', 'zaplatene', 'stav', 'poznamka', 'kurzId'];
   const dateFields = ['datumOd', 'datumDo'];