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1. Word-to-column assignment now uses overlap-based matching instead of center-point matching. This fixes narrow page_ref columns losing their last digit (e.g. "p.59" → "p.5") when the digit's center falls slightly past the midpoint boundary into the next column. 2. Post-OCR empty row filter: rows where ALL cells have empty text are removed after OCR. This catches inter-row gaps that had stray Tesseract artifacts giving word_count > 0 but no actual content. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>