- Updated creativex_scoring_storing.py to map multiple placements to platforms
- Modified get_mapped_platform to get_mapped_platforms (returns list)
- Updated a2_to_a3_upload_polling.py to retrieve platforms list from DB
- Enhanced metadata_extractor_mvp.py to build multi-value CreativeX field
- Added DAM-CX mappings.csv for channel/placement to platform mapping
- Supports single channel with multiple placements generating multiple Platform^Score values
