Add E2E tests for calendar event flows #146
Description
Priority: Tier 4 — Nice to Have
E2E tests exist for auth, admin, and password flows but not for event/calendar operations.
Acceptance Criteria
- E2E test: create event as admin
- E2E test: edit event
- E2E test: delete event with confirmation modal
- E2E test: regular user cannot create/edit/delete events
- E2E test: private event not visible to regular user
- E2E test: recurring event displays multiple occurrences