matthias.lotz 489e2166bb feat(telegram): add daily deletion warning cron job (Phase 5) ... - Added Telegram warning cron job at 09:00 (1 hour before cleanup) - Integrated with GroupCleanupService.findGroupsForDeletion() - Sends sendDeletionWarning() notification for groups pending deletion - Added manual trigger method triggerTelegramWarningNow() for development - Added POST /api/admin/telegram/warning endpoint for manual testing - Fixed SchedulerService singleton instance in server.js app.set() - Added Telegram ENV vars to docker-compose.yml environment section Tested successfully with test data showing warning message in Telegram.		2025-11-30 11:20:10 +01:00
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openapi.json	feat(telegram): add daily deletion warning cron job (Phase 5)	2025-11-30 11:20:10 +01:00