Fixed two issues in PDF orientation detection:
1. Unit mismatch: Orientation detection was comparing content bboxes
(in pixels) against PDF page dimensions (in points). Now correctly
uses OCR dimensions (pixels) for detection.
2. Priority override: When orientation adjustment is needed, now also
updates original_page_sizes dict so per-page processing uses the
adjusted dimensions instead of the original PDF dimensions.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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