- Integrate TelegramNotificationService into batchUpload route
- Send notification on successful upload with group details
- Add metadata parsing for year/title/name from form fields
- Create integration tests for upload notifications
- Fix getAdminUrl() to use INTERNAL_HOST with dev port
- Update jest.config.js to transform uuid ESM module
- Non-blocking async notification (won't fail upload on error)
Phase 3 complete: Upload notifications working in Docker dev environment
Tested successfully with real Telegram bot in test group
