- Implement AdvowareHistoryService for fetching and creating history entries.
- Implement AdvowareWatcherService for file operations including listing, downloading, and uploading with Blake3 hash verification.
- Introduce Blake3 utility functions for hash computation and verification.
- Create document sync cron step to poll Redis for pending Aktennummern and emit sync events.
- Develop document sync event handler to manage 3-way merge synchronization for Akten, including metadata updates and error handling.
