- Introduced a new DocumentProcessingNotificationHandler to manage notifications for document processing stages.
- Updated existing notification methods to include detailed progress updates for various stages (queued, parsing, chunking, embedding, storing, completed, failed).
- Refactored NotificationService to support the new document processing notification type and metadata schema.
- Updated multiple document processing tasks to create and manage notifications throughout the processing lifecycle.
- Adjusted UI components to reflect changes in notification types and improve user experience during document uploads and processing.
- Added streaming service support to the Q&A agent for real-time token streaming.
- Updated `answer_question` method to stream responses token-by-token to the frontend.
- Modified `handle_qna_workflow` to handle both custom and values streaming modes.
- Enhanced state management to include streaming service for improved user experience.
