- Updated the HTTP exception handler to sanitize 500 responses, replacing them with a generic message to prevent sensitive information leakage.
- Preserved detailed messages for other 5xx statuses (e.g., 503, 502) to provide user-friendly feedback while logging the errors server-side.
- Added unit tests to ensure that specific 5xx responses retain their detail for frontend rendering.
- Introduced a `ProcessingMode` enum to differentiate between basic and premium processing modes.
- Updated `EtlRequest` to include a `processing_mode` field, defaulting to basic.
- Enhanced ETL pipeline services to utilize the selected processing mode for Azure Document Intelligence and LlamaCloud parsing.
- Modified various routes and services to handle processing mode, affecting document upload and indexing tasks.
- Improved error handling and logging to include processing mode details.
- Added tests to validate processing mode functionality and its impact on ETL operations.
