Extend EventBus: RC notifications, CRM activity, Gancio migration, calendar source types

- Add 7 new RC notification types: campaign published, donations, subscriptions,
  SMS escalations, user approved, video published, ticketed events
- Add CRM activity entries for subscription activated and email bounced
- Migrate ticketed-events Gancio sync from inline calls to EventBus listener
- Add meeting.created/deleted events from jitsi.routes.ts
- Add SHIFT, MEETING, TICKETED_EVENT to CalendarItemSource enum (Prisma migration)
- Update calendar-sync listener to use proper source types instead of MANUAL
- Total: 45 listener subscriptions across 6 modules, zero inline sync calls remaining

Bunker Admin

api/prisma/migrations/20260331100000_add_calendar_item_source_types/migration.sql

@@ -0,0 +1,4 @@
+-- Add SHIFT, MEETING, TICKETED_EVENT to CalendarItemSource enum
+ALTER TYPE "CalendarItemSource" ADD VALUE IF NOT EXISTS 'SHIFT';
+ALTER TYPE "CalendarItemSource" ADD VALUE IF NOT EXISTS 'MEETING';
+ALTER TYPE "CalendarItemSource" ADD VALUE IF NOT EXISTS 'TICKETED_EVENT';