- Add hidden print-preview-copy div at app level for clean print isolation
- Use @media print rules to show only print copy (960x720) in landscape
- Auto-sync print copy with preview content on modal render via use_effect
- Copy CSS variables and data attributes for proper hour filtering
- Set explicit dimensions matching print-preview-paper content area
- Force landscape orientation with @page rule for better calendar printing
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Co-Authored-By: Claude <noreply@anthropic.com>
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