RQ workers

DataLens Platform plans to use RQ background jobs for asynchronous cataloging and extraction in future iterations. RQ workers depend on Redis for job queue management. RQ worker depends on the Docling extraction system for processing DOCX/PPTX extraction jobs without fallback failure tolerance. RQ Worker depends on RQ queue to consume extraction jobs and process them. Backend processing depends on RQ Worker to execute background extraction and embedding jobs. The extract.py worker runs as part of the RQ workers to process extraction jobs asynchronously. Future work on the DataLens Platform includes integration of RQ workers for background job processing.