- Updated `stream_file_data` to bypass encryption, as Iroh provides end-to-end encryption for connections.
- Adjusted `FileTransferProtocolHandler` to skip decryption, directly using the received encrypted data.
- Enhanced logging to reflect changes in data handling during file transfers.
- Added tests to ensure session keys are distinct and validate key swapping functionality.
- Improved error handling in `DevicePersistence` for corrupted session keys during device loading.