- Changed assertions in `test_llamacloud_basic_uses_cost_effective_tier` to check for `parse_page_with_llm` instead of `cost_effective` tier.
- Updated `test_llamacloud_premium_uses_agentic_plus_tier` to verify `parse_page_with_agent` instead of `agentic_plus` tier.
- Ensured that `tier` is no longer included in the call arguments.
- 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.
