Progress update:
- Core Infrastructure: 13/14 tasks completed
- Direct Extraction Track: 18/18 tasks completed
- Total progress: 30/147 tasks (20.4%)
Completed major components:
✅ UnifiedDocument model with all structures
✅ DocumentTypeDetector service
✅ DirectExtractionEngine with PyMuPDF
✅ Dependencies added to requirements.txt
Next priorities:
- Update OCR service for dual-track integration
- Enhance PP-StructureV3 usage
- Update PDF generator for UnifiedDocument
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