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Recover unclaimed oversized initial letters only at the start of a text paragraph, restore PDFium U+0002 line-end hyphens before text assembly, and consume DocVortex ligature-space geometry without changing OCR routing. Refs opendatalab/MinerU#5635 and opendatalab/MinerU#5636 Validation: 431 focused regression tests passed. The three-page issue sample passes standard auto/txt and Flash txt with identical Python/Rust ModelJson, MiddleJson and Markdown outputs; source and before/after line boxes were reviewed.