Phase 2 file types

PHASE2_UNIFIED_STRATEGY.md defines the pipeline design and tool justifications for processing Phase 2 file types PHASE2_IMPLEMENTATION_PLAN.md provides go/no-go recommendation and effort analysis for Phase 2 file types processing Phase 2 file types include PDF files Phase 2 file types include DOCX files Phase 2 file types include PPTX files Phase 2 file types include MSG files The Docling extraction system was built as part of the DataLens Phase 2 GPU-first document extraction system.