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When textbook authors wrap text within a cell (e.g. long German translations), OCR treats each physical line as a separate row. New _merge_wrapped_rows() detects this by checking if the primary column (EN) is empty — indicating a continuation, not a new entry. Handles: empty EN + DE text, empty EN + example text, parenthetical continuations like "(bei)", triple wraps, comma-separated lists. 12 tests added covering all cases. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>